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ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 1 of 214
"New Refinery in Dos Bocas, Tabasco"
Technical Specification
Piping Systems in Industrial Plants – Materials
Design and Specifications
Issued
Ing. Martín Cervantes Lima
Mechanical Specialist
Reviewed
Ing. Gabriel Gallegos Velázquez
Piping and Mechanical Engineering Deputy Manager
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Approved
Ing. Olga Martha Monterrubio Chavolla
Engineering and Cost Manager
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 2 of 214
"New Refinery in Dos Bocas, Tabasco"
INDEX
Page
1. Introduction ……………………………………………………………………………………………………
3
2. Objective…………………………………………………………………………………………………………
3
3. Scope and Field of Application……………………………………………………………………………
3
4. Validity, Updates and Backup………………………………………………………………………
4
5. References………………………………………………………………………………………………………
4
6. Definitions………………………………………………………………………………………………………
6
7. Symbols, Abbreviations and Acronyms ……………………………………………………………………
8
8. Development…………………………………………………………………………………………………………
9
9. Annexes……………………………………………………………………………………………………………
54
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 3 of 214
"New Refinery in Dos Bocas, Tabasco"
1. Introduction
With the creation of Pemex and its Subsidiary Productive Companies as State Productive Companies, Article 67 of the
Federal Law on Metrology and Standardization ceased to be mandatory, as well as the TSs, as it is a provision addressed
to dependencies and entities of the Public Federal Administration.
Based on the foregoing and in order to replace the canceled TSs, this specification was developed with engineering
criteria that aim to reduce costs and improve the project schedule. References to TS in this TS, can be to the indicated
TS, or to the TS that has replaced it, which, to facilitate its identification, in the TS the same number of the TS has been
preserved.
This document defines the specific and complementary requirements of national and international regulations applicable
to the manufacture, assembly, inspection and testing of Piping Systems in existing and future industrial plants.
This TS was developed based on:
• Mexican Petroleum Law and its Regulations.
• Organic Statute of Petróleos Mexicanos.
• General Procurement Provisions for Petróleos Mexicanos and its Subsidiary Productive Companies.
In the preparation of this Technical Specification, personnel from the following areas of Petróleos Mexicanos participated:
• Pemex Industrial Transformation
2. Objective
Establish the technical and documentary requirements that must be met in engineering and in the material specifications of
the piping systems for industrial plants.
3. Scope and Field of Application
This specification establishes the minimum requirements that must be applied in the development of design engineering and
in the specification of piping materials used in the processes and services that are carried out in the industrial facilities of
Petróleos Mexicanos and Subsidiary Organizations.
It establishes the technical specifications for piping materials, connections and fittings that are used in processes and services
that include crude oil and gas as raw material, intermediate products and finished products of oil and gas processing, as well
as cryogenic, solid fluids fluidized (catalysts), flushing, fire network and auxiliary services such as steam, air, water and fuel
gas, among others.
This specification does not include:
a) Pipeline for radioactive services.
b) Pipeline for power supply covered by ASME B31.1
c) Pipeline covered by ASME B31.4 or ASME B31.8 (Superficial, buried, marine or submarine industrial
pipelines).
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 4 of 214
"New Refinery in Dos Bocas, Tabasco"
d) Heat transfer pipelines (flux-work).
e) Pipeline in land or sea transport vehicles such as auto-tanks and boats, among others.
f) Interconnection pipeline between industrial and maritime facilities (ships, berths, among others) covered by
other standards. g) Piping for drilling.
h) Hydro-sanitary piping (“plumbing systems”).
This specification is of particular application in the project of the New Dos Bocas Refinery, Tabasco.
4.Validity, Updates and Backup
4.1
This technical specification is in force during the life cycle of the Dos Bocas New Refinery
project, Tabasco; and should be updated if the suggestions or comments of modification requires
it.
4.2
The present technical specification will be available for consultation on the intranet portal of
the Pemex Industrial Transformation Sub directorate of Projects and in the respective repository of
the Pemex Regulatory Control System. The original version will be protected by the Engineering
and Costs Management of the Sub directorate of Industrial Projects, attached to Pemex Industrial
Transformation.
4.3
Suggestions and comments for the update of this technical specification should be sent to
the Mechanical Engineering and Piping Department of the Engineering and Costs Management of
the Industrial Projects Sub-Directorate, located at Marina National No. 329, Building B1, floor 6,
Colonia Verónica Anzures; Delegación Miguel Hidalgo, Postal Code 11300, Mexico City or email
[email protected].
5.
References
The editions of the standards, codes, specifications or procedures referred to must be those in force at the
date of the contract, including its addendums, unless another edition is indicated.
5.1NOM-008-SCFI-2002. General System of Measurement Units.
5.2 NOM-018-STPS-2000. System for the identification and communication of hazards and risks by hazardous
chemicals in the workplace.
5.3NOM-026-STPS-2008. Colors and safety and hygiene signs and identification of hazards due to fluids conducted in
pipes.
5.4ISO 5208. Industrial Valves-Pressure testing of metallic valves.
5.5ISO 7005-1. Pipe flanges Part 1: Steel flanges for industrial and general service piping systems
5.6ISO 10434. Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries.
5.7ISO 12241. Thermal insulation for building equipment and industrial installations. Calculation rules.
5.8 ISO 15156-1. Petroleum, petrochemical, and natural gas industries - Materials for use in H2S-containing environments in oil and gas
production - Part 1: General principles for selection of cracking-resistant materials.
5.9 ISO 15156-2. Petroleum and natural gas industries - Materials for use in H2S-containing environments in oil and gas production Part 2: Cracking-resistant carbon and alloy steels and use of cast irons.
5.10
ISO 15156-3. Petroleum and natural gas industries - Materials for use in H2S-containing environments in oil and gas production
- Part 3: Cracking-resistant CRAs (corrosion-resistant alloys and other alloys).
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 5 of 214
"New Refinery in Dos Bocas, Tabasco"
5.11 ISO 15761. Steel gate, globe and check valves for sizes DN 100 and smaller, for the petroleum and natural gas industries.
5.12 ISO 15848-1. Industrial valves – Measurement, test and qualification procedures for fugitive emissions – Part 1: Classification
system and qualification procedures for type testing of valves.
5.13API RP 551. Process Measurement Instrumentation
5.14API STD 594. Check Valves: Flanged, Lug, Wafer, and Butt-welding
5.15API STD 599. Metal Plug Valves – Flanged, Threaded, and Welding Ends
5.16API STD 602. Gate, Globe, and Check Valves for Sizes DN 100 (NPS 4) and smaller for the Petroleum and Natural Gas Industries.
5.17API STD 603. Corrosion Resistant, Bolted Bonnet Gate Valves – Flanged and Butt-Welding Ends
5.18API STD 609. Butterfly Valves: Double – Flanged, Lug – and Wafer – type.
5.19API RP 615. Valve Selection Guide
5.20API STD 623. Steel Globe Valves – Flanged and Buttwelding Ends, Bolted Bonnets.
5.21API RP 751. Safe Operation of Hydrofluoric Acid Alkylation Units
5.22API RP 941 Steels for Hydrogen Service at Elevated Temperatures and Pressures in Petroleum Refineries and Petrochemical
Plants
5.23API RP 945 Avoiding Environmental Cracking in Amine Units
5.24API RP 1102. Steel Pipelines Crossing Railroads and Highways
5.25ASME B16.5. Pipe Flanges and Flanged Fittings
5.26ASME B16.9. Factory-Made Wrought Buttwelding Fittings
5.27ASME B16.10. Face to Face and End to End Dimensions of Valves
5.28ASME B16.11. Forged Fittings, Socket-Welding and Threaded
5.29ASME B16.25. Buttwelding Ends
5.30ASME B16.34. Valves – Flanged, Threaded, and Welding End
5.31ASME B16.36. Orifice Flanges
5.32ASME B16.47. Large Diameter Steel Flanges
5.33ASME B1.1. Unified Inch Screw Threads (UN and UNR Thread Form)
5.34ASME B18.31.2 Continuous Thread Stud, Double-End Stud, and Flange Bolting Stud Bolt)
5.35ASME B31.3. Process Piping
5.36MSS SP-75. High-Strength, Wrought, Butt-Welding Fittings
5.37MSS SP-95. Swaged Nipples and Bull Plugs
5.38MSS SP-97. Integrally Reinforced Forged Branch Outlet Fittings – Socket Welding, Threaded, and Buttwelding Ends
5.39BS 2633. Specification for Class I arc welding of ferritic steel pipework for carrying fluids
5.40BS 6364. Valves for cryogenicservice
5.41NACE SP0198. Control of Corrosion Under Thermal Insulation and Fireproofing Materials
5.42NACE SP0403. Avoiding Caustic Stress Corrosion Cracking of Refinery Equipment and Piping
5.43 NACE MR0103. Petroleum, petrochemical and natural gas industries – Metallic materials resistant to sulfide stress cracking in
corrosive petroleum refining environments
5.44 ET-009-PEMEX-2019. Identification of products transported by pipes or contained in storage tanks.
5.45 ET-010-PEMEX-2019 Minimum spacing and criteria for the distribution of industrial facilities.
5.46 ET-015-PEMEX-2019Protection of Areas and Storage Tanks of Flammable and Fuel Products.
5.47ET-016-PEMEX-2019 Design of firefighting networks.
5.48ET-026-PEMEX-2019. Protection with anticorrosive coatings for buried and / or submerged pipes.
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 6 of 214
"New Refinery in Dos Bocas, Tabasco"
5.49 ET-027-PEMEX-2019. Alloy steel and stainless-steel bolts and screws for high and low temperature services.
5.50ET-031-PEMEX-2019. Vent and Burner Systems in Pemex Installations.
5.51ET-034-PEMEX-2019. Thermal insulation for high temperatures in equipment, vessels and surface pipes.
5.52ET-035-PEMEX-2019. Piping systems in industrial plants - Installation and testing.
5.53ET-053-PEMEX-2019. Corrosion protection systems based on coatings for surface installations.
5.54ET-107-PEMEX-2019. Smart two-dimensional and three-dimensional electronic modeling for Installations.
5.55ET-128-PEMEX-2019. Water Firefighting Networks in industrial facilities. Construction and Testing.
5.56ET-139-PEMEX-2019. Pipe supports - Design.
5.57ET-140-PEMEX-2019. Drainage systems.
5.58ET-142-PEMEX-2019. Male Valves.
5.59ET-150-PEMEX-2019. Hydrostatic tests of pipes and equipment.
5.60ET-156-PEMEX-2019. Gaskets and Joints.
5.61ET-158-PEMEX-2019. Metal expansion joints.
5.62ET-204-PEMEX-2019. Emergency blocking valves (Remote activation isolation valves)..
5.63ET-208-PEMEX-2019. Relieved of efforts by heating resistors and gas heating.
5.64ET-271-PEMEX-2019 Integration of the project book for delivery of works and services.
5.65ET-274-PEMEX-2019. Evaluation of the mechanical integrity of process pipes and pressure vessels in industrial
facilities. .
5.66ET-281-PEMEX-2019 Anticorrosive protection based on hot dip galvanizing.
6.Definitions
6.1Support: Element where the pipe resto or fixes the pipe.
6.2Zero Leaks (in valve seat): No visible leakage (drops or bubbles) during the time of the test, in accordance with
ISO 5208.
6.3Piping Circuit. Set of pipes and equipment that handle a substance of the same composition, in which the
operating conditions in its different parts may vary.
6.4Class (Rating): Dimensional designation for classification of pipe components, which relates a pressuretemperature range based on the mechanical properties of the materials, as well as dimensions necessary for
coupling between pipe components; in American system.
6.5Pipe Components. Any element that forms or assembles (by welding or other type of joint) a pipe system, pipe
circuit or pipes.
6.6Constructability: Technique as a system to achieve optimal integration of knowledge and constructive
experience in planning, engineering and construction operations; oriented to treat the peculiarities of the work and
the restrictions of the environment in order to achieve the objectives of the project.
6.7Service Specification (SS): Document describing, indicating and establishing the minimum characteristics that
the pipeline must have, as well as the user's particular requirements, useful life, design and operation conditions,
environment, data sheets of substance safety, physical and chemical characteristics of fluids (substances), safety,
operational flexibility and applicable regulations, in compliance with this TS.
6.8Pipe Materials Specification (PMS): Document that establishes the set of pipe components, their materials,
class, characteristics and construction requirements for the management of a service or services within a given
operating range (pressure – temperature).
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 7 of 214
"New Refinery in Dos Bocas, Tabasco"
6.9Water Hammer: Sudden and unforeseen increase in pressure in the pipe, due to the variation in the dynamic
state of the fluid, such as that produced by the abrupt closure of a valve, among others.
6.10
Process Data Sheet: Document containing the basic information of equipment or containers or
instruments. The information may consist of dimensions, shape, type, connection ends, service, operating
conditions, specification of materials, components, among others.
6.11 Basic Engineering: Stage of a project that consists of the definition of the arrangements, designs and general
specifications, balances of matter and energy, pipe diagrams and equipment, among others, that are prepared
based on the concepts of design and technology that It is selected during the conceptual engineering phase. The
specifications that are prepared for the quotation of equipment and define the requirements of services and
construction or manufacturing.
6.12 Detail Engineering. Final design stage of a project, which includes the final detail plans for construction and
/ or manufacturing of the goods, which are prepared based on the basic Engineering and Extended Basic
Engineering if it is available. The updated specifications for the acquisition of equipment and the total definition
of construction requirements and supplies are part of the detailed Engineering.
6.13
Responsible Engineer: Engineer with technical, legal and professional credentials issued by the
Mexican Government or its international equivalent, and with at least five years of proven experience in the
Pipeline Engineering of the same magnitude and importance; that signs, initiates and endorses the documents
with its professional identity card.
6.14
Isometric Pipe. Drawing with the three-dimensional representation of the design of a pipe, showing its
trajectory, components, dimensions, location, characteristics and construction requirements of it.
6.15
Nominal: It is a numerical identification for dimensions, capacities, efforts, classes or other
characteristics that are used as a property, not as an exact measure.
6.16
Flange Series: Classification system for design of flanges that are derived in Series class (rating) and
PN (diameters) series, in accordance with ISO 7005-1.
6.17
Cryogenic Service: Service at a temperature lower than -196 ° C (-320 ° F).
6.18
Low Temperature Service: Service at a temperature between -28 ° C (-20 ° F) and -196 ° C (-320 ° F).
6.19
Hydrogen service. - If the partial pressure of hydrogen is equal to or greater than 7.1 kg / cm2 abs (0.7
MPa).
Severe hydrogen service is considered:
• If the hydrogen partial pressure is equal to or greater than 35.6 kg / cm2 abs (3.5 MPa)
• If hydrogen is present and the operating pressure is equal to or greater than 71 kg / cm2 abs (7 MPa)
• If the hydrogen partial pressure is equal to or greater than 7.1 kg / cm2 abs (0.7 MPa) and the operating
temperature is equal to or greater than 200 ° C
6.20 Saddle: Pipe support to adjust its elevation and transfer efforts to the pipe support; formed by a segment
between 120 ° and 180 ° of a cylinder or pipe and with structural fixing elements.
6.21 Pipe System: Interconnected pipe subject to the same design conditions.
6.22 Pipe Support: Structure in which the efforts of supporting the pipe lie, such as elevated pipe supports (pipe
racks), surface pipe supports, concrete stand, among others.
6.23 Hazardous Substances or Hazardous Chemical Substances: Those that due to their physical and / or
chemical properties, when handled, transported, stored or processed present the possibility of causing health,
flammability, reactivity or special risks, and may affect the health of exposed persons or causing material
damage to the facilities. They are classified by their degrees of risk in accordance with NOM-018-STPS-2000
and the column corresponding to the identification according to NFPA must be used.
6.24 Non-Hazardous Substances: Those chemical substances, which are not flammable, are not toxic, are not
reactive and do not cause damage to human or medium tissue; substances with design pressure less than 686
kPa (7 kg / cm2), and / or design temperature from -29 ° C to 50 ° C (-20 ° F to 122 ° F).
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 8 of 214
"New Refinery in Dos Bocas, Tabasco"
6.25 Technologist or Licensor: Contractor holding the technology, or holder of the rights granted in license to
exploit the technology.
6.26 Trim: Designation for the internal components of the valves that include the description and
characteristics of the material specifications for:
a)
Stem,
b)
Seat surface for gate or disc,
c)
Body seat surface (rings),
d)
Stem guide bushings,
e)
Bolt or pin connecting the rod with the gate, if applicable,
f)
Other elements as specified in the PMS.
6.27 Pipe: Assembly of pipes and pipe components, used to transport, distribute, mix, separate, discharge,
measure, control or repel the flows of a fluid or substance (pipe system, pipe circuits and / or pipe, as
appropriate ).
6.28 Aerial Pipeline: The one running above the level of the finished floor or the natural terrain (not buried or
submerged).
6.29 Pipes: Pipe system, pipe circuit and / or pipe, as appropriate.
6.30 Tube: Airtight hollow cylinder used to transport a fluid or send a pressurized fluid.
7. Symbols, abbreviations and acronyms
CS
Carbon Steel.
SS
Stainless Steel
AWWA American Water Works Association
BSI
British Standard Institute.
SM
With Seam.
AGA
Compressed Gas Association.
ND
Nominal Diameter (International System).
EEMUA Engineering Equipment and Materials Users Association.
TWT
Tube Wall Thickness.
WPE Welded joint efficiency.
PMS Material Technical Specification (Piping)
SS
Specification of Services.
TS
Technical Specification.
FM Factory Mutual Insurance Company (Mutual Association of Insurance Companies).
FF
Flat Face (Flanges)
Dr. Degree of material.
FLMS (LFMN) Federal Law on Metrology and Standardization, and its Regulations (Mexico)
MSS Manufacturers Standardization Society of the Valve and Fittings Industry
N.A. Does not apply / Not Applicable
NDT Non-Destructive Tests.
NPT National Pipe Thread Taper.
NPS Nominal Pipe Size. (Nominal Pipe Diameter), in inches.
NSF National Sanitation Foundation.
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 9 of 214
"New Refinery in Dos Bocas, Tabasco"
HDPE High Density Polyethylene.
PFI Pipe Fabrication Institute.
PP Polypropylene.
PTFE Polytetrafluoroethylene (Teflon®).
PSV Pressure Safety Valve - Safety Valves, Safety-Relief Valves, Relief Valves, Pressure Relief Valves.
Rel. Of Eff. Relieved of efforts.
RF Raised Face (Flanges).
RPTFE Reinforced polytetrafluoroethylene. (Reinforced Teflon)
RT Radiographic Test / Examination.
RJ or RTJ Ring Joint (Rating).
RTRP Reinforced thermosetting resin pipe.
Rx X-rays
SMLS Seamless.
STD Standard
TP Type
UL Underwriters Laboratories Inc.
UT Ultrasound Test / Examination
For the purposes of this specification in relation to the symbology and values of units of measurement, consult
NOM-008-SCFI-2002.
8.DEVELOPMENT
8.1 Service requirements
The engineering and specifications of pipe materials in industrial facilities must comply with this specification; cases not
covered here must meet the requirements of ASME B31.3. The design, construction and testing of fire networks must
comply with this specification and with the specifications ET-015-PEMEX, ET-016-PEMEX, ET-035-PEMEX, ET-127PEMEX and ET-128-PEMEX. The criteria and spacing for the distribution of the facilities must comply with ET-010PEMEX-2014.
NOTE. The figures in this specification are schematic and should not be construed as constructive or design drawings.
8.1.1 Mechanical Pipe Design
The mechanical design of the pipeline must be carried out based on the pipeline design and service
conditions, comply with chapter II of ASME B31.3, as well as an enunciative manner but not limited to the
following:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Maximum and minimum temperatures, both in the process and in the environment.
Maximum and minimum pressures of the pipeline circuit.
Physical and chemical properties of substances and degrees of hazard of this.
Compatibility between materials of the pipe components with the substance contained and with the environment.
Compatibility between materials of pipe components and their mechanical strength.
Constructability and operation and maintenance facilities.
Environmental effects that affect the pipe.
Effects that derive from the service, installation, supports and geographic location that affect the pipe.
Minimum lifetime required (corrosion and erosion).
Allowable efforts and other effort limits.
Variations in pressure - temperature conditions.
Tolerances and mechanical resistance.
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 10 of 214
"New Refinery in Dos Bocas, Tabasco"
8.1.1.1 Pipe Dimensions and Requirements
8.1.1.1.1 General Requirements
For the “pressure” design of the pipeline, what is established in paragraphs 303 and 304 of ASME B31.3 and in
accordance with the requirements of this specification must be applied.
The minimum DN for pipes in all services must be DN 20 (NPS ¾), exceptionally the nipples can be DN 15 (NPS ½) in
instrument arrangements.
8.1.1.1.2
Carbon Steel Pipe, Medium and Low Alloy Steels
8.1.1.1.2.1 Carbon steel pipe, medium and low alloy steels and other alloys other than stainless steels, must comply with
the dimensions and requirements of ASME B36.10M
8.1.1.1.2.2 Carbon steel, low and medium alloy pipes of DN 20 to 50 (NPS ¾ to 2) must be at least Schedule 80, even if
by calculation they are smaller thicknesses
8.1.1.1.2.3 The carbon steel pipe of DN 80 (NPS 3) and up to DN 600 (NPS 24), must be at least standard ID (STD),
even if by calculation they are smaller thicknesses
8.1.1.1.2.4 DN 65 pipe (NPS 2½) should only be specified for firefighting systems.
8.1.1.1.3
Stainless Steel Pipe
8.1.1.1.3.1 The stainless-steel pipe must comply with the dimensions and requirements of ASME B36.19M. When
dimensions not covered by ASME B36.19M are required, the requirements of ASME B36.10M must be met.
8.1.1.1.3.2 In stainless steel process pipe from DN 20 to 40 (NPS ¾ to 1½), the minimum Schedule must be 80S, for DN
50 (NPS 2) the minimum Schedule must be 40S; except when the PMS of this specification or the Licensor specify a major
Schedule. Minor thicknesses should not be specified even if by calculation they result in minor thicknesses.
8.1.1.1.3.3 The stainless-steel pipe of DN 80 (NPS 3) and larger, the minimum number must be 10S. Smaller thicknesses
should not be specified even if by calculation they are smaller thicknesses, except for the suction of blowers, where the
thickness must be the calculated.
8.1.1.1.4
Non-Ferrous Metal Pipe
8.1.1.1.4.1 The dimensions of the pipes must comply with the dimensions and requirements of ASME B36.19M or ASME
B36.10M; For tubes that are manufactured on a plate basis, the minimum thickness must be expressed according to the
ASTM specification of the plate indicated in the corresponding PMS.
8.1.1.2 Seamless and Longitudinally Welded Pipe
8.1.1.2.1
8.1.1.2.2
The pipes must be seamless or with straight longitudinal seam.
For EMT Pipe not included in this specification, for services with hazardous substances with degree 4 of hazard
to health or reactivity, in accordance with NOM-018-STPS-2000, using the column corresponding to the conforming
identification to NFPA, seamless or straight longitudinal seam pipe can be specified, with joint efficiency 1. For other services
the minimum joint efficiency must be 0.85.
8.1.1.2.3
The pipe for severe cyclic service must be seamless up to DN 600 (NPS 24) and longitudinally welded for
larger DNs in compliance with paragraph 305.2.3 of ASME B31.3.
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8.1.1.3 Joints between Pipe Components
8.1.1.3.1 In corrosive fluids, pipe with beveled ends must be used to butt weld on all diameters.
8.1.1.3.2 Weld-box junctions (SW) are not allowed in any of the following services:
a) Hazard or substances that induce corrosion or degradation by crevice corrosion (erosion crevice) or erosion.
b) Severe mechanical vibration.
8.1.1.3.3
The minimum separation between contiguous circumferential welds in pipe arrangements shall be as follows:
a) 90 mm (3.5 in), for DN 50 (NPS 2) and smaller.
b) 1.5 times the DN, for DN 80 to 100 (NPS 3 to 4).
c) 1.0 times the DN, for DN 150 to 250 (NPS 6 to 10).
d) 300 mm for DN 300 to 500 (NPS 12 to 20).
e) 400 mm for DN 610 (NPS24) higher.
8.1.1.3.4
Exceptionally and only in special cases, justified before PEMEX, in which it is not possible to comply with the
above, the following circumferential weld separations may be applied, provided that the pipe does not require
heat treatment (PWHT):
a) 76 mm (3 ”), for DN 150 pipe (NPS 6) and smaller
b) 102 mm (4 ”), for pipe from DN 200 to DN 300 (NPS 8 to 12)
c) 152 mm (6 ”), for DN 350 pipe (NPS 14) and larger (REF: 5.39, Sect 1.11)
8.1.1.3.5
Threaded joints must only be specified in pipe for any of the following services:
a) Non-hazardous substances,
b)
c)
d)
e)
Non-erosive substances,
Substances that do not induce corrosion or degradation due to cracking and,
Operating pressure less than 2 MPa (300 psi),
Drains or vents, after blocking valves with nipples and screw caps.
8.1.1.3.6 Does not apply
8.1.1.3.7 In swages, the larger diameter end is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS 2).
8.1.1.3.8 Joints for non-ferrous metal materials such as titanium, aluminum, nickel, among others, must be butt
weldable, including basic nipple arrangements; unless the Technologist indicates another procedure.
8.1.1.4 Radiography in Welded Joints
8.1.1.4.1 Circumferentially welded pipe joints must be inspected with RT (Rx or Gamma, as appropriate) in accordance with
ASME B31.3; at least with the percentage indicated both in the index of material specifications, and in the PMSs themselves
included in this specification. For new specifications or, Licensor specifications circumferentially welded joints must be
inspected with RT (Rx or Gamma, as applicable) in compliance with ASME B31.3, with the percentage that at least should
be applied to services that meet at least one of the following conditions:
a)
100 percent for services with:
- Hazardous substances with degree 4 of health risk, in accordance with NOM-018-STPS-2000.
- Pipe in severe cyclic conditions, as defined in ASME B31.3 and its paragraph 302.3.5.
- Design temperatures with 25 ° C or 50 ° F below the limit temperature set for materials with
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b)
c)
d)
e)
f)
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numbers P4 and P5, in accordance with Table A-1 of ASME B31.3.
- Hydrogen Service.
- Class 1500 or higher.
50 percent for services with:
- Hazardous substances with grade 3 health risk, in accordance with NOM-018-STPS-2000.
- Class 900.
33 percent for services with:
- Hazardous substances with grade 2 health risk, in accordance with NOM-018-STPS-2000.
- Class 600.
20 percent for services with:
- Hazardous substances with grade 1 health risk, in accordance with NOM-018-STPS-2000.
- Class 300.
10 percent for services with:
- Hazardous substances with degree 0 of health risk, in accordance with NOM-018-STPS-2000 in Class 150.
5 percent for services with:
- Non-hazardous substances in Class 150.
Note 1: When a substance is not classified in NOM-018-STPS-2000, its safety data sheet should be consulted and in the
absence thereof, an analysis of its risk should be performed.
Note 2: For inspection of fillet welds that cannot be inspected by RT (Rx or Gamma), see ET-035-PEMEX.
8.1.1.4.2 For pipes with hazardous substances with any degree of flammability, reactivity or special risk, the percentage
of radiography must be at least the one indicated in 8.1.1.4.1 for the same Class (150, 300, etc.).
8.1.1.4.3 For pipes in service with substances in which two or more radiography percentages are applied, the higher
percentage should be applied.
8.1.1.4.4 The percentage of joints to be radiographed that is specified, applies to butt welded joints, for each welder or
welding machine operator performs, for the same welding procedure (WPS), these joints must radiograph in all their
circumference.
8.1.1.4.5 When the percentage results in a fraction, the percentage should be rounded to the immediate higher integer.
8.1.1.4.6 If defects are detected in the inspected joints, the percentage of joints to be radiographed should be increased
based on the guidelines in paragraph 341.3.4 of ASME B31.3.
8.1.1.4.7 In “SW” welding junctions, inspection must be carried out with penetrating liquids, with the same percentage
indicated in 8.1.1.4.1.
8.1.1.4.8 In welds between headers and reinforced accessories “Olets” of carbon steel and ferrous alloys, the inspection
must be by magnetic particles, with the same percentage indicated in 8.1.1.4.1.
8.1.1.4.9 In welding between head and reinforced stainless steel “Olets” accessories, the inspection must be by
penetrating liquids with the same percentage indicated in 8.1.1.4.1.
8.1.1.4.10 For special cases of materials and services Ultrasound can be used, at the request of PEMEX.
8.1.1.5 Thermal Treatments
8.1.1.5.1 Tubes and pipe components that require heat treatment supplementary to the material manufacturing standard,
in accordance with the service requirement to be handled, must be indicated in the corresponding PMS.
8.1.1.5.2 Pipe manufactured in the field or in the workshop must be heat treated and / or relieved from stresses, as
established by ASME B31.3, for the corresponding material, thickness and manufacturing process, including welding of the
appendices. (supports, plates, etc.) with the pipe. This requirement must be indicated as a complement in the
corresponding PMS.
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8.1.1.5.3
The pipeline that by service requires heat treatment and / or stress relief must comply with the PMS of this
specification. For services not included in the PMS of this specification, the recommendations indicated in the following
documents must be complied with:
a)
b)
c)
d)
e)
f)
NACE SP0403
ISO 15156
For Caustic service.
For sour service.
NACE MR0103 / ISO 17945
For Sulfhidric Acid Service.
API RP945
For amines service.
API RP 941
For selection of materials in hydrogen service.
API RP 751
For HF Hydrofluoric Acid Service
8.1.1.6 Corrosion Allowances
8.1.1.6.1
In the new specifications, the corrosion tolerance must be considered, which consists of the additional thickness
to that calculated by internal pressure, which must be included to compensate for the estimated corrosion in the pipe, and
which must be equal or greater at the wear rate projected on the pipe material because of the fluid handled. This estimate
must be based on NACE 37519 and API RP 581, for a useful life of 20 years. For carbon steel pipes, the tolerances should
not be less than the following:
a) 1.6 mm (0.0625 in) for services that generate uniform wear, less than 0.076 mm / year (0.003 in / year).
b) 3.2 mm (0.125 in) for services that generate uniform wear, between 0.076 mm / year (0.003 in / year) and 0.152 mm /
year (0.006 in / year).
In the case of pipes with an estimated corrosion of 6.4 mm (0.25 ”) or greater, they should also be considered
Materials more resistant to corrosion, in order to determine the most suitable option, technically and economically.
8.1.1.6.2
8.1.1.7 Pipe Component
8.1.1.7.1 Nipples
8.1.1.7.1.1 The length of nipples for pipes without thermal insulation, must be 100 mm (4 in) and for pipes with thermal
insulation, must be 150 mm (6 in), or of sufficient length to protrude 25 mm (1 in) of insulation.
8.1.1.7.1.2 Not applicable
8.1.1.7.1.3 Reduction nipples (Swaged nipples) must be manufactured in accordance with the requirements of MSS SP-95
8.1.1.7.1.4 In the reduction nipples the smallest diameter allowed is DN 15 to 50 (NPS ½ to 2) and the larger diameter of
DN 20 to 80 (NPS ¾ to 3), both ends must be specified.
8.1.1.7.2 Threaded Connections
8.1.1.7.2.1 Threaded connections must be manufactured in accordance with the requirements of ASME B16.11, and are
only allowed for DN 20 to 50 (NPS ¾ to 2), except where otherwise indicated in the PMS of this specification
8.1.1.7.2.2
8.1.1.7.2.3
The threads on the threaded connections must be NPT type in accordance with ASME B1.20.1.
The threaded connections must be Class 3000 or 6000. The carbon steel pipes to be joined must be
Schedule 160 for Class 3000 and XXS Schedule for Class 6000, in accordance with Table 8 of ASME B16.11.
8.1.1.7.2.4 Male plugs must be solid bar with hexagonal or round head.
8.1.1.7.2.5
8.1.1.7.2.6
Not applicable.
No square head plugs, bushing type reductions, union nuts, or hollow plugs should be specified
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8.1.1.7.2.7 Threaded connections for thermowells must not be specified.
8.1.1.7.2.8 Threaded joints in hazardous substances services must be sealed with continuous welding and no thread
should remain exposed.
8.1.1.7.3
Welded Box Connections
8.1.1.7.3.1 Socket weld connections must be DN 50 (NPS 2) and smaller and must comply with ASME B16.11.
8.1.1.7.3.2 Weld box connections must be Class 3000, 6000 or 9000. Carbon steel pipes, low and medium alloy steels, to
be joined with these connections, must be at least Schedule 80 for Class 3000 , Schedule 160 for Class 6000 and
Schedule XXS for Class 9000, in accordance with Table 8 of ASME B16.11.
8.1.1.7.3.3 In stainless steel welding junctions, in no case the tubes may be less than 40S Schedule, even if by
calculation show them in smaller thicknesses.
8.1.1.7.3.4 In weld box connections, a minimum clearance (GAP) of 1.6 millimeters (1/16 in) must be left at the bottom of
the box (socket) before welding.
8.1.1.7.4
Butt Weldable Ends Connections
8.1.1.7.4.1 Connections up to DN 1200 (NPS 48) must comply with ASME B16.9 and for larger diameters and up to DN
1500 (NPS 60) with MSS SP-75.
8.1.1.7.4.2 They must have the same wall or Schedule thickness as the tube to which they are attached.
8.1.1.7.4.3 Elbows must be long radius, except when due to space limitations they must be short radius and prior
approval of authorized PEMEX personnel.
8.1.1.7.4.4 Direction changes must be made through factory connections (elbows) or through factory bends or curves, if it
is indicated by the Licensor; pipe bends or curves must have a minimum radius of 5 (five) times the nominal diameter of
the pipe, and must comply with numerals 304.2.1 and 332 of ASME B31.3. Bended tube on site are not accepted.
8.1.1.7.4.5 .In process pipelines, or in services with hazardous substances, "improvised" pipe connections should not be
used, such as: mitigated elbows, wedge reductions, wedge plugs, pencil tip terminations, welded flat caps , made of plate,
among others.
8.1.1.7.4.6 Mitigated elbows and “improvised” reductions may be used only for cooling water services or water of services
in Class 150, and in diameters greater than DN 650 (NPS 26) and must be:
a)
b)
Direct “Tube to Tube” inserts can be specified in low pressure piping systems such as atmospheric drains
In the case of closed amine and chemical drains, as well as in low pressure vents, the connections must be with
“side” fittings at 45 ° factory made, or with 100% radiographed longitudinal seam, and if so PMS indicates it, with
relief of efforts (PWHT).
8.1.1.7.4.7 Direct grafts "Tube to Tube" can be specified in low pressure pipe systems as atmospheric drains.
8.1.1.7.4.8 In the case of closed drainage of amine and chemicals, as well as in low pressure bursts, the connections
must be with “side” fittings at 45 ° factory, or with 100% radiographed longitudinal seam, and if so indicated by the EMT,
with stress relief (PWHT).
8.1.1.7.4.9 Does not apply.
8.1.1.7.4.10 Lateral derivations must be of uniform wall and must not have angled or sharp finishes, as indicated in section
7 of ASME B16.9 and must be seamless when the PMS specifies seamless pipe. Derivations with seams must be 100%
X-ray longitudinally welded.
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8.1.1.7.5
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Integrally Reinforced Connections (…Olets)
8.1.1.7.5.1 Integrally reinforced connections (Olets) commercially known as "Threadolets - Threaded Outlet ", "Socket Weld
Outlets - Socket Weld Outlet ", and "Weldolets - Butt Weld Outlet " or their equivalents, must comply with MSS SP-97; while
those commercially known as "Latrolet - Lateral Outlet ", "Nipolet - Nipple Outlet ", "Elbolet - Elbow Outlet ", "Nipple Pipette"
or its equivalents, must comply with the provisions of numerals 302.2, 304.3, 326, 328.5 of ASME B31.3: 2016. Only
connections that comply with the chemical composition and requirements indicated in the applicable ASTM standard, and
the dimensions, requirements and marking indicated in the MSS SP-97 will be accepted.
8.1.1.7.5.2 Integrally reinforced connections must be specified with the branch diameter and head diameter
8.1.1.7.5.3 The beveled ends must comply with ASME B16.25 and the joint with the head must have a maximum
clearance of 1.6 millimeters (0.0625 in), see Figure 4
Reinforced
Integral
Connector
Flat End
Minimum
Clearance
Beveled
End for
Welding
Maximum
Clearance
1/16”
Reinforced
Integral
Connector
Minimum
Clearance
Maximum
Clearance
1/16”
Figure 4. Maximum Clearances
8.1.1.7.5.4 Not Applicable.
8.1.1.7.5.5 Not Applicable.
8.1.1.7.5.6 Not Applicable.
8.1.1.7.6 Flanges
8.1.1.7.6.1
8.1.1.7.6.2
Flanges made of plate are not accepted, regardless of DN and Class.
Flanges shall comply with ISO 7005 Class series with the ASME B16.5 requirements for DN up to 600
(NPS 24) and DN 650 to 1500 (NPS 26 to 60) with the requirements of ASME B16.47 series A class.
8.1.1.7.6.3
Flanges greater than DN 1520 (NPS 60) must be calculated in accordance with ASME Section VIII
Division 1; and its dimensions must be detailed in its DS.
8.1.1.7.6.4
Flanges must be weldable neck type, welding box, long neck, overlap, sliding or blind, with raised face
types (RF, “Raised Face”) or ring joint (RJ, “Ring Joint ”) Also known as (RTJ) for metal flanges, and flat-faced (FF,“ Flat
Face ”) for non-metallic or copper-nickel alloy flanges.
8.1.1.7.6.5
The finish of the flange faces shall comply with paragraphs 6.4.4 of ASME B16.5, as appropriate for the
service and type of packing.
8.1.1.7.6.6
Weld neck flanges can be specified in all DNs and Classes.
8.1.1.7.6.7
Weld neck flanges must have the same internal diameter and Schedule or thickness of the pipe or pipe
component to which they are attached.
8.1.1.7.6.8
Welding box flanges should not be specified for DNs greater than 50 (NPS 2).
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Overlapping flanges (“Lap Joint”) can only be specified for pipes of non-ferrous metal materials and up
8.1.1.7.6.9
to Class 150.
8.1.1.7.6.10
Sockets for thermowells must be with long neck flanges, Class 300 minimum. The outer diameter of the
thermowell must pass through the inner diameter of the long neck flange, see Figure 6.
Figure 6. Long neck flanges for thermowell sockets
8.1.1.7.6.11 Blind flanges must be factory forged and can be specified in all DNs and Classes. Flanges made of plate are
not allowed regardless of DN and Class.
8.1.1.7.6.12 Reduction flanges must be limited to Class 150 and up to DN 600 (NPS 24), their particular application is
established in the PMS; its manufacture from blind flanges or plate flanges is not accepted.
8.1.1.7.6.13 Slip-on flanges may be specified in Class 150, for services with non-hazardous substances category D, in
accordance with ASME B31.3, such as cooling water, service water, fire water or air, and for pluvial and oily drainage at
atmospheric pressure. They should not be installed directly on connections or accessories; only on pipe.
8.1.1.7.6.14 Threaded flanges may only be specified in Class 150, for services with non-hazardous substances and when
indicated in the PMS of this specification.
8.1.1.7.6.15 Orifice plate carrier flanges must be DN 50 (NPS 2) or greater, Class 300 minimum and must comply with
ASME B16.36. The flange must have the same inner diameter (bore) as that of the pipe, as well as the weld inner diameter
of the pipe flange joint to the same bore.
8.1.1.7.7
Valves
8.1.1.7.7.1 The selection of the valves for pipes must comply with the recommendations of API RP 615, with the
requirements established in this specification prevailing.
8.1.1.7.7.2 Valves must be specified and comply with ASME B16.34 series Standard Classes (A - Standard Class), ASME
B16.10 for dimensions between faces, ISO 5208 for inspection and testing, and with the following norms or standards as
appropriate, as well as with what is required in this specification and in each PMS in particular:
a) Steel, gate, globe and check valves up to DN 50 (NPS 2) of weld housing or threaded or welded ends, API STD 602.
b) Stainless steel or nickel alloy gate valves of DN 80 (NPS 3) and up to DN 600 (NPS 24), API STD 603.
c) Carbon steel, medium and low alloy gate valves of DN 80 (NPS 3) and up to DN 600 (NPS 24), ISO 10434.
d) Carbon steel globe valves DN 80 (NPS 3) and greater, ASME B16.34 for service lines, and API 623 for process lines.
e) Ball valves, API STD 608.
f) Trunnion mounted ball valves ET-211-PEMEX-2019.
g) Male valves, ET-142-PEMEX-2019.
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h) Butterfly valves of DN 80 (NPS 3) and greater, API 609.
i) Check valves DN 80 (NPS 3) and greater, API 594.
j) Double expansion and solid sliding gate valves with parallel faces, DN 600 (NPS 24) or larger ET-211-PEMEX.
k) Emergency blocking valves, ET-204-PEMEX.
l) Male valves, API STD 599.
m) Valves not covered by the Norms or standards of the previous subsections, ASME B16.34.
8.1.1.7.7.3 The material of the internal (Trim) of the valves must comply with API 600, API 623, API 602, or
API 594 as appropriate. Except where another is indicated. Alternative “trims” or substitutions may be applied
as indicated in the API’s themselves.
8.1.1.7.7.4 The valves must not have gaskets containing asbestos or other environmentally polluting material.
8.1.1.7.7.5 Valve materials must be made of steel or other alloys specified in ASME B16.34, according to the
service and as specified in the corresponding PMS. The use of cast iron valves is not allowed.
8.1.1.7.7.6 Valves must be specified as follows:
a.
b)
c)
Type gate, butterfly, ball or male, for isolation or blocking.
Type globe or butterfly to regulate or throttle the flow.
Retention type to avoid a backward flow.
8.1.1.7.7.7 The flanged ends of the valves must be integral to the valve body and must be manufactured by
forging or casting, in one piece (body-flanges). Valve flanges must comply with 8.1.1.7.6 of this specification.
8.1.1.7.7.8 Valve handwheel must be solid.
8.1.1.7.7.9 Valves for Process services must be specified for ultra-low emission leakage, CO1 classification, in
compliance with ISO 15848-1, the valves must be marked as set forth in 6.6 of ISO 15848-1. The test methods
and procedures, as well as the acceptance criteria will be in accordance with ISO 15848-1 and ISO 15848-2.
8.1.1.7.7.10 Fugitive emissions for any hydrocarbon service must not exceed 50 ppmV, in accordance with ISO
15848-1.
8.1.1.7.7.11 Gate, globe or box check valves for welding or beveled ends of DN 20 to 50 (NPS ¾ to 2), they
must comply with the following, unless otherwise indicated in the PMS’s of this specification:
a.
b.
c.
d.
The gate valves must have a fixed handwheel rising stem, screwed bonnet and solid gate (wedge).
Globe valves should be handwheel and stem rising and screwed bonnet.
Check valves (not backward or check) must be ball or piston to work horizontally or vertically; or swing
type to operate horizontally.
Valves with box ends for welding or butt welding’s whose welds must be relieved from stresses must be
specified with 150 mm nipples, welded at the ends and relieved from efforts in the workshop. Or, specify
them with both “extended” ends.
8.1.1.7.7.12 Gate valves from DN 80 to 600 (NPS 3 to 24) Class 150, 300 and 600, with flanged or beveled
ends must comply with the requirements of ISO 10434 and must be fixed-handwheel, rising stem, outer thread,
standard yoke and screwed bonnet.
8.1.1.7.7.13 Gate valves greater than DN 600 (NPS 24) in Class 150, 300 and 600, with flanged or beveled
ends must comply with the requirements of ASME B16.34, and must have a fixed handwheel, rising stem, outer
thread and standard yoke, screwed bonnet.
8.1.1.7.7.14 Pressure Seal Gate Valves, with beveled ends Class 600, 900 or 1 500, must comply with the
requirements of ISO 10434, in DN 50 to DN 600 (NPS 2 to NPS 24 ), with fixed handwheel, ascending stem,
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"New Refinery in Dos Bocas, Tabasco"
hermetically sealed seats, ultra-low emission graphite gaskets. These valves must be specified for saturated
and superheated steam.
8.1.1.7.7.15 Gate valves for service at temperatures up to -45 ° C (-49 ° F) must comply with the requirements
indicated in this specification for gate valves, have a pressure equalizing orifice of 3.2 mm (1 / 8 in) in diameter
on the face of the gate of the fluid containment side, to have the same pressure in the cavity of the gasket when
the valve is closed; and the valve body must be marked with an arrow on the higher pressure side, as shown
in Figure 7.
Valve with Equilizing Oriifce
150
Flow
Downstream
Flow
1/8" Equilizing
Pressure Orifice
Figure 7. Equalizing Pressure Orifice in the Valve Gate
8.1.1.7.7.16 The extended bonnet globe and gate valves, for service at design temperatures below -45 ° C (-49 ° F), must
comply with the requirements indicated in this specification for gate and globe valves , test requirements and type of bonnet
in accordance with BS 6364 and the following:
The extended valve bonnets can be one-piece or three-piece: half body flange - extension – packing box, and in this case
meet the following requirements:
- The flange of the bonnet for the extension must be of weldable neck (equivalent to reduced flange of weldable neck ASME
B16.5), which allows to join the extension tube with equal thicknesses. No flange joint is allowed with the extension that
does not have a neck that allows the joint with equal thicknesses, see Figure 8.
- Welding of the bonnet flange - extension tube – packing box should be of the same thickness with bevel, full penetration
and 100% radiographed.
- The wall thickness of the extension must be compatible with the Class of the valve and within the requirements of
mechanical resistance.
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Sheet 19 of 214
"New Refinery in Dos Bocas, Tabasco"
Packing Box
Extension Pipe
Same thickness
Bonnet welding
neck flange
Welding without neck
is not acceptable
Figure 8. Bonnet Extension for Globe and Gate Valves
8.1.1.7.7.17
Floating ball valves should only be specified up to DN 200 (NPS 8), in classes 150 and 300; or up to DN 50
(NPS 2) for class 600 or greater.
8.1.1.7.7.18
a)
b)
c)
The male valves, unless otherwise specified, must be of antistatic design and as indicated below:
Class 150
- Short pattern in DN 50 to DN 300 (NPS 2 to NPS 12).
- Ventury pattern in DN 350 to DN 600 (NPS 14 to NPS 24).
Class 300
- Short pattern in DN 50 to DN 250 (NPS 2 to NPS 10).
- Ventury pattern in DN 300 to DN 600 (NPS 12 to NPS 24).
Class 600
- Regular pattern in DN 50 to DN 300 (NPS 2 to NPS 12).
8.1.1.7.7.19
Butterfly valves for process services must be flanged ends, triple eccentricity, category B of API 609, with a
disk-stem joint by means of wedges or conical bolts, if nothing else is indicated in the TS or PMS. Butterfly valves for remote
activation isolation (VAAR) must comply with ET-204-PEMEX.
8.1.1.7.7.20
Butterfly valves without flanges (wafer type) are not allowed, and the ear valves (lug type) are restricted only
as jacketed valves. These valves are allowed for DN 80 (NPS 3) and greater.
8.1.1.7.7.21
Clamped-in butterfly valves (lug type) must be double eccentric with a through hole circle, at DN 80 (NPS 3)
and larger.
8.1.1.7.7.22
The pressure seal globe valves (Pressure Seal) with beveled ends, for saturated and superheated steam
service, must comply with the requirements of ASME B16.34, the Classes allowed are 600, 900 and 1500, in DN 50 to DN
300 (NPS 2 to NPS 12) with fixed steering wheel, rising stem, seats with hermetic seal in accordance with Table 17 of ISO
10434. Additionally, for the stem and wall thicknesses of the valve body they must meet the requirements of ISO 10434.
8.1.1.7.7.23
8.1.1.7.7.24
Not applicable
Swing type check valves should be flanged ends in Class 150, 300, 600, 900 and 1500, for DN 80 to 600
(NPS 3 to NPS 24). The design must include a stop integrated to the lid or the body that limits the opening of the disc.
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a)
b)
ET-032-PEMEX-2019
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Sheet 20 of 214
"New Refinery in Dos Bocas, Tabasco"
Valves DN 80 to 600 (NPS 3 to NPS 24) must be type B of API 594.
Valves greater than DN 600 (NPS 24) and up to DN 1050 (NPS 42) must be type A of API 594.
Stop
Stop
Fl ow
Fl ow
Di s c
Figure 9. Swing type check valves with stop integrated to lid or body
NOTE: These valves must be installed horizontally in any service
8.1.1.7.7.25
Axial and silent flow check valves (Check) must meet the requirements of ISO 14313 and must be specified
for centrifugal compressor discharges for process services.
8.1.1.7.7.26 Split disk check valves (dual plate) in Classes 150, 300, 600, 900 and 1500, must be type A of API 594. The
use of this type of valves should only be for PMSs so indicate it in this specification, based on the following:
a)
b)
Class150
- Valves with flanged ends in DN 200 (NPS 8) and larger.
- Ear-type valves (lug) in DN 150 (NPS 6) and smaller.
Class 300, 600, 900 y 1500
- Valves with flanged ends in DN 300 (NPS 12) and larger.
- Ear-type valves (lug) in DN 250 (NPS 10) and smaller.
8.1.1.7.7.27
8.1.1.7.7.28
Check valves of the flange type (wafer) are not allowed.
The pressure seal check valves (pressure seal) with beveled ends, for saturated steam and superheated
steam service, must comply with ASME B16.34 requirements with ISO 10434 body wall thickness, in Classes 600, 900 and
1500 and DN 50 to DN 600 (NPS 2 to NPS 24).
8.1.1.7.7.29 Piston type sampling valves must comply with the requirements of ASME B16.34.
8.1.1.7.7.30 The valves must have a gear and rack actuator, with opening indicators according to Table 1.
8.1.1.7.7.31 Not Applicable
Diameter
Valve Type
DN
Globe
Gate
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Class
(NPS )
200
(8)
and larger
300
150
(6)
and larger
600
100
(4)
and larger
900 and 1500
400
(16)
and larger
150
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Gate
300
(12)
and larger
300
250
(10)
and larger
600
200
(8)
and larger
900
150
(6)
and larger
1 500
Butterfly
200
(8)
and larger
150, 300 and 600
Ball
Male short pattern
150
200
(6)
(8)
and larger
and larger
150, 300, 600, 900 and 1500
150 and 300
Male Ventury pattern
Male Regular pattern
350
100
(14)
(4)
and larger
and larger
150 and 300
600
Table 1. Use of Actuator and Valve Rack
8.1.1.7.8
Flange Gaskets
8.1.1.7.8.1
8.1.1.7.8.2
8.1.1.7.8.3
8.1.1.7.8.4
Gaskets must be specified to obtain hermetic flange joints.
a)
b)
Gaskets must comply with ET-156-PEMEX and ASME B16.20.
Gaskets must be free of asbestos or contaminants in the environment.
Spiro-metallic gaskets must have:
Centering ring (external) for all services. The material must be ASTM A36 carbon steel with corrosion protection, in
accordance with paragraph 3 of ASME B16.20.
Internal ring according to the specification indicated by the Licensor. For services not specified by the Licensor, the
gaskets must be in accordance with paragraph 3.2.5 of ASME B16.20; and the materials, according to the service,
in accordance with paragraph 3 of the same standard.
8.1.1.7.8.5
Octagonal ring gaskets, type "R" (RTJ), must be specified for hydrogen service in class 600 or higher;
and for other services in Class 900 and higher; and where specified in the PMS of this specification; except when the Licensor
specifies another type; and must comply with ET-156-PEMEX.
8.1.1.7.8.6 Not applicable.
8.1.1.7.8.7 Not applicable
8.1.1.7.9 Stud Bolts, Bolts, Screws and Nuts
8.1.1.7.9.1
The hardware (studs bolts, bolts, screws and nuts) for pipe must comply with the requirements indicated in
ASME B31.3, ASME B16.5, ASME B16.47, ASME B1.1, ASME B18.31.2, and with the technical standard ET-027-PEMEX.
8.1.1.7.9.2
Flanged joints must be made with studs and nuts; Screws should only be used on accessories or equipment
with threaded holes.
8.1.1.7.9.3
The tips of the stud bolts and screws must have "Pointed ends", tapered or rounded ends, for easy insertion
into nuts and threaded holes.
8.1.1.7.9.4
The length of the studs in the flanged joints should be such that after tightening, they protrude from two to
three threads at each end.
8.1.1.7.9.5
Not applicable
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ET-032-PEMEX-2019
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Sheet 22 of 214
"New Refinery in Dos Bocas, Tabasco"
Figures Eight, Spacers and Blind Joints
8.1.1.7.10.1
The space required for the installation and operation of figures eight, spacers and permanent blind joints, must
be considered from the design for the blocking of pipes and equipment.
8.1.1.7.10.2
Figures eight, spacers and blind joints must comply with ASME B16.48. Sizes not covered by it must be
calculated in compliance with paragraph 304.5.3 of ASME B31.3, and their dimensions must be compatible with the flanges
where they will be installed. For diameters up to DN 300 (NPS 12) figures eight must be specified and for larger diameters
they must be specified in two pieces; spacer and blind joint.
8.1.1.7.10.3
The materials of figures eight, separators and blind joints must be in accordance with ASME B16.5; taking
into account the characteristics of the handled fluid and its operating and design conditions.
8.1.1.7.10.4
In figures eight, spacers and blind joints, the surface for the gasket seal must have a finish, enhancement and
dimensions equal to the faces of the flanges where they will be installed, in accordance with ASME B16.5 or ASME B16 series
A. 47, as appropriate. To the thickness that is required by calculation or to that indicated in ASME B16.48, the thickness of
the embossed face or that of the groove should be added, as appropriate.
8.1.1.7.10.5
Figures eight, spacers and blind joints must be marked on the edges with an impact marker letter the DN,
Class and material specification; and for those not covered by ASME B16.48, in addition to the Maximum Permissible Working
Pressure and the corresponding temperature. In the case of figure eights, the mark must be on both sides (blind side and free
side).
8.1.1.7.10.6
Spacers and blind joints must have a lifting ear with a hole. The lifting ear of the blind joints must be located
on the normal axes of the flange (0 °, 90 °, 180 ° or 270 °) between the stud space. The lifting ear of the spacers must also
have a hole that matches the circle and diameter of the flange bore and must be located coincident with the first stud or stud
of the flanged joint according to Figure 12.
Blind Flange
Spacer
Lifting Ear
Spacer
Lifting Ear
Blind Flange
On the flange side mark with impact
letter DN, Class and Material
Drilled hole should coincide with
circle and diameter of the flange
holes
Figure 12. Spacers and Blind Joints
8.1.1.7.10.7 The lifting ear must protrude at least 10 cm from the flanges and on one of its faces must be marked with
impact letter "BLIND" for blind joints and "FREE" for spacers, the marks must not be hidden in the flanges, see Figure 12.
8.1.1.7.10.8 The suction and discharge lines of pumps, inlet and outlet lines of heat exchangers and compressors, direct
fire heaters, filters that use filter elements of cartridges and all that equipment that are required to be insulated by frequent
maintenance, they must have figures eight / definitive spacer.
8.1.1.7.10.9 When at the request of PEMEX, sliding shutters must be specified in line instead of figures eight of manual or
automatic operation, which allow the position of the sliding plate to be changed safely; These devices must be flanged ends,
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Sheet 23 of 214
"New Refinery in Dos Bocas, Tabasco"
and must ensure their self-locking, they must also comply with the dimensions of ASME B16.5 or “A” series of ASME B16.47,
as appropriate, ASTM F 1020, API 607 fire test and ASME SECTION VIII, Div. 1. The sliding plate of the plug must be
manufactured at least in SS 316L stainless steel or other material according to the process fluid, with thickness in accordance
with ASME B31.3. The design must be full pass. It must have a mechanical safety system to prevent accidental operation.
Mechanical or hydraulic presses are not accepted. In the case of electrically operated shutters, they must comply with the
classification of areas in which they are installed, in accordance with ET-036-PEMEX.
8.1.1.8 Not Applicable
8.1.1.8.1 Not Applicable
8.1.1.8.2 Not Applicable
8.1.1.8.3
Underground Piping for Firefighting Water Networks
8.1.1.8.3.1 Nonmetallic pipe for underground installations for firefighting water is only allowed when requested by PEMEX
and must comply with this specification and the design criteria established in ET-016-PEMEX.
8.1.1.8.3.2 Tubes and their components must be FM approved or listed for UL service.
8.1.1.8.3.3 Not applicable
8.1.1.8.3.4 Factory made connections must be used when tying with metal pipe
8.1.2 Piping Arrangements
8.1.2.1 General Requirements
8.1.2.1.1 When specified by PEMEX, pipeline engineering must be developed through the use of Intelligent ThreeDimensional Electronic Modeling (METI’s), which must comply with ET-107-PEMEX.
8.1.2.1.2 Not Applicable
8.1.2.1.3 Pipeline arrangements and distribution must be grouped and sorted in such a way that their installation is
functional, simple, safe and easy to build, operate and maintain, and with the necessary spaces for access and escape
routes for emergency.
8.1.2.1.4 Preparations for future extensions must be with a blocking valve and blind flange, eight figures or blind joints must
not be used in these cases.
8.1.2.1.5 For sectioning flows, where figures eight or blind joints must be installed, block valves must be specified.
8.1.2.1.6 At pipe end points, figures eight or blind joints must not be specified.
8.1.2.1.7 Structural pipe supports must comply with ET-139-PEMEX and the “typical” reference supports, They are
established in ET-035-PEMEX.
8.1.2.1.8 Pipe arrangements must not contain dead legs. The terminal ends of the service heads must be blind flanged to
facilitate the blowing of them.
8.1.2.1.9 Where it is required to install purges, the height between the level of the finished floor and the bottom of pipe must
be at least 40 cm, except as indicated in 8.1.2.1.14.
8.1.2.1.10 The minimum free height of the bridges must be as established by ET-139-PEMEX.
8.1.2.1.11 The minimum height free of obstructions between the level of finished floor or level of operation (as appropriate)
and the bottom level of the structures, should be as shown in Table 2.
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Sheet 24 of 214
"New Refinery in Dos Bocas, Tabasco"
Description
Minimum Height
Free space between the lower part of the rails of the raised supports
(racks) and the level of finished floor inside plants.
3.00 m
Above platforms and corridors.
2.40 m
Inside of buildings (compressor house, pump house, among others) or
within a common group of equipment.
2.40 m.
Note: In all cases, sufficient space must be provided for removal and / or access to the equipment.
Table 2. Minimum Height for Structural Supports
8.1.2.1.12 Underground pipe is only allowed for drainage, cooling water, service water, drinking water, firefighting water,
collection and recovery systems; Any other service must be air. For firefighting water, in addition, the specifications set forth
in ET-015-PEMEX and ET-016-PEMEX must be complied with. The underground metal pipe must only be specified with
welded joints.
8.1.2.1.13 The underground pipeline for gravity collection and recovery systems must be housed in trenches.
8.1.2.1.14 The Pipe lodged in trenches must be supported on sleepers that must allow the runoff to the storm drain and /
or the corresponding one according to the service of the lines, with a clearing of 10 cm on both sides of the sleeper with the
walls, and a minimum height of 15 cm.
8.1.2.1.15 The trenches must have galvanized gratings, concrete covers or railings as specified in the project, in order not
to leave risk conditions for personnel. The pipe that handles explosive fluids in which its vapors are heavier than air should
not be housed in trenches.
8.1.2.1.16 When in the design, the vents and purges are integrated into a closed system, these must include figures eight.
8.1.2.1.17 The design of the service for the purging and draining of liquids must be sent to the oily, chemical or a closed
system drainage, no arrangements with purges to the floor or the atmosphere are allowed.
8.1.2.1.18 Purges, drains and vents of hazardous substances or pollutants into the environment must be interconnected
to closed systems.
8.1.2.1.19 Pipeline arrangements must include the necessary blockages to allow sectioning or isolating facilities safely for
stoppage, maintenance and / or inspection, so that blocking one does not affect the operation of the others.
8.1.2.1.20 Pipeline arrangements must allow quick and easy access to equipment and instruments for operation and
maintenance.
8.1.2.1.21 The pipeline that operates at high temperatures and requires a thermal insulating system, this must comply with
ET-034-PEMEX.
8.1.2.1.22 The pipeline that operates at low temperatures and requires a thermal insulation system, this must comply with
NOM-009-ENER-1995, and ISO 12241.
8.1.2.1.23 The Pipeline without a heat insulating system with operating temperature greater than 59 ° C (139 ° F) or colder
than -5 ° C (23 ° F) in areas where personnel may have contact with them , they must be installed a barrier or insulation for
personal protection in accordance with ET-034-PEMEX.
8.1.2.1.24 Not applicable
8.1.2.2
Spacing between pipes
8.1.2.2.1 For ease in pipeline removal and repair maneuvers, it must have at least the following separation, see Figure 13:
• In pipes without flanges, 80 mm between tube-tube, tube-insulation, tube-wall, wall-insulation, or insulation Mexican Petroleum All rights Reserved
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insulation
• In pipe with flanges, 50 mm between pipe and flanges of larger diameter, pipe-insulation of the flange or
insulation-flange.
• Between the flange side without insulation and adjacent wall or 150 mm to equipment or 80 mm to flange with
•
insulation and wall.
In plant integration pipe 150 mm between pipe sides.
Figure 13. Minimum Spacing between pipes
NOTE: flanges must not be aligned in parallel pipe; they must be alternated.
8.1.2.2.2 In parallel pipes subjected to thermal expansions or contractions, the minimum separation between pipes must
be increased in accordance with flexibility analyzes, to avoid their contact or interference in operating, starting or stopping
conditions.
8.1.2.2.3 Pipeline arrangements must include the additional spaces required for the thermal insulation or personal
protection system of the pipeline.
8.1.2.2.4 The location of the pipe in the raised pipe supports must be optimized according to its DN, temperature and
service.
a)
b)
c)
The main DN pipe must be housed adjacent to the columns
The pipe of smaller DN in the central part.
Hot service pipes must be housed on the opposite side of cold pipes.
8.1.2.2.5 If two pipe beds are required, auxiliary services and flushes must be located on the upper bed and the process
services on the lower bed. When three or more beds are required, the vent must be located on the upper bed, the auxiliary
services in the intermediate bed and the process in the lower beds.
8.1.2.2.6 The horizontal separation between underground pipes must be at least 45 cm.
8.1.2.2.7 Where there is no passage of vehicles, crossings or loads on the ground, the depth of the underground pipe must
not be less than 45 cm measured from the upper level of the pipe to the level of finished floor. At crossroads, streets,
railways or where loads are expected on the ground, the depth should not be less than 1 m, measured from the upper level
of the pipe, and must have a carbon steel metal jacket and comply with the recommendations of API RP 1102.
8.1.2.2.8 Pipeline arrangements must have free spaces around and between containers, equipment and pipe, which allow
access to portable equipment for maintenance. The spaces for operation between the pipe and the adjacent equipment
must be at least 75 centimeters and must not obstruct walkways or corridors.
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8.1.2.2.9 Pipes with liquids that are formed by condensation, must be designed with a continuous slope (slope), must have
a minimum slope of 1 per thousand (1mm per meter). The drain and process drain points must be discharged to a container
or collecting head. The necessary adjustments must be made in the saddles and respect the integrity of the pipe supports.
Swings (pockets) or dead legs are not allowed, or arrangements that allow the accumulation of liquids that limit or hinder
the free flow of gases or that can cause back pressures and / or points of localized corrosion.
8.1.2.2.10 The Pipe indicated as “free drain” (Free drain), does not require a slope; but the arrangement should not have
"Bags"; unless a slope is indicated in the project engineering.
8.1.2.2.11 For process gas services in sulfur plants the minimum slope (slope) must be 4 per thousand (4 mm per meter)
and for liquid sulfur service it must be 20 per thousand (20 mm) for every meter; unless another slope is indicated in the
project engineering.
8.1.2.2.12 The determination of the type of heating vein (electric trace or steam vein) for the pipes indicated by the
Technologist / Licensor, must be based on the requirement indicated by PEMEX. In the case of electric traces, these must
comply with ET-248-PEMEX.
8.1.2.2.13 Drainage systems must comply with ET-140-PEMEX.
8.1.2.2.14 On elevated pipe supports in integration corridors or within the units, at least 20 percent free space per piping
bed should be left for extensions or addition of future lines.
8.1.2.3 Filters
The filters for pipes described in the PMS of this specification are typical for the corresponding service; It is the
Contractor's responsibility to specify the filters in compliance with the following.
a) The mesh material must be fluid resistant and at least must be made of TP 304 stainless steel,
b) Type of fluid and physicochemical characteristics (composition, density, viscosity, corrosivity, degree of risk,
incompressible and compressible, among others),
c) Process conditions (flow and speed, pressure and pressure drop, as well as operating temperature),
d) Type of service, application, operation, cleaning and maintenance,
e) Periods of operation without cleaning or replacement of the element, with respect to the amount of suspended particles
and size of particles to be retained.
8.1.2.4
Change of Specification
Pipeline Class changes must be in accordance with the following:
a)
b)
c)
The change of Class and / or similar materials (same group No. P of ASME B31.3) must be done at
the welded joint, see Figure 16.
The change of Class and / or dissimilar materials (different group No. P of ASME B31.3) must be
made on the flange, except when the Licensor / Technologist specifies that it should be in a welded
joint.
For both cases, the highest-class PMS, the specification of gaskets and studs of superior metallurgy
should prevail.
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Figure 16. PMS Change in Automatic Valves
8.1.2.5
General Requirements for Valve Arrangement
8.1.2.5.1 Control valve arrangements must have bypass passages or bypasses; which must include two manual blocking
valves, one on each side and a direct or bypass with valve that allows to maintain the operation of the piping system. The
diameter and type of the direct or bypass valve must be determined during the Detailed Engineering. They must have two
purges, located one on each side of the automatic valve, as illustrated in Figure 16. The control valve pipes must be
supported in such a way that the valves can be easily removed, without requiring the installation of temporary supports.
8.1.2.5.2 Valves located at a height greater than 4.5 m above the operation level, must have fixed platforms and stairs for
their operation, with the exception of the root valves of DN 50 (NPS 2) and smaller ones attached to heads .
8.1.2.5.3 Frequent operation valves must be located in such a way that they are operated from the finished floor level or
from an operating platform, at a height not exceeding 1.9 m, as indicated in Figure 17.
8.1.2.5.4 Not applicable
8.1.2.5.5 Uncommonly operated valves that are installed at a height greater than 2.1 m and up to 4.5 m must be accessible
from adjacent fixed platforms, mobile articulated platforms or fixed stairs.
8.1.2.5.6 Valves in battery limits must have platforms and stairs with sufficient space for operation and maintenance; the
fixed stairs for access on both sides of the pipe support (rack) and also the fixed platforms.
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Figure 17. Location for Frequent Operated Valves
8.1.2.5.7 In the supports for integration pipes, fixed marine ladders with resting platform must be installed to the first bed, at
the beginning of the pipe support and every 100 m along it. In the pipe supports inside the plants, at least two fixed ladders
with a resting platform must be installed, in addition to those of the battery limit; one must be placed at the opposite end of
the battery limit and one at the middle.
8.1.2.5.8 The corridors or areas of circulation of personnel must be free of any obstruction with a minimum free width of 70
cm. The handwheels, levers, stems and actuators of the valves among others should not invade said circulation area.
8.1.2.5.9 The orientation of the handwheels, levers, stems and actuators must be indicated in the isometric and / or Pipe
drawings, and in the three-dimensional electronic model when applicable.
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8.1.2.5.10 In parallel equipment or installations for the same function, independent blocking valves must be placed to isolate
equipment or facilities for maintenance, without interrupting the normal operation of the plant.
8.1.2.5.11 Valves housed in registers or trenches (under decks) must be specified with stem extensions with handwheel for
operation from the finished floor level, approximately 1 m +/- 10 cm, with position indicator of the open or closed valve, which
allows to visualize the position of the valve outside the register or trench, as shown in Figure 18. Except for the valves in
registers with depth and dimensions that allow their operation by personnel, from the inside in upright shape.
Figure 18. Valves Located in Registers / Trenches
8.1.2.6 Piping Arrangement in Heat Exchangers
8.1.2.6.1 The inlet and outlet pipe of heat exchangers must include manually operated block valves and figures eight for
their isolation, unless otherwise indicated by the Technologist or Licensor or the risk analysis. The location of the valves and
figures eight must be accessible from the operating floor level or from the platform level, see Figure 19.
8.1.2.6.2 The valves in the vents or drains that are located in the inlet or outlet pipe of the heat exchangers must be at least
DN 25 (NPS 1).
8.1.2.6.3 Not applicable
8.1.2.6.4 Pipeline arrangements should be designed so that, in the event of a failure in the lower temperature flow, the heat
exchangers remain filled with this same fluid.
8.1.2.6.5 The pipe arrangement of the heat exchangers should allow the removal of the bundles of tubes, caps, channels,
bonnets; the free space in front of the equipment for this operation must be at least the length of the tube bundle plus 1 m.
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Figure 19. Piping Arrangement in Heat Exchangers
8.1.2.7
Piping Arrangement in Process Compressors
8.1.2.7.1 The suction and discharge pipe must have manually operated shut-off valves and figures eight, accessible from
the operating floor level or from platforms.
8.1.2.7.2 The service line for compressors must have manually operated block valves.
8.1.2.7.3 The arrangement and distribution of the process compressor house must be with mezzanine, with the
compressor at the top and auxiliary services at the bottom, unless a different arrangement is indicated in the project ES.
8.1.2.7.4 The compressor discharge pipe must have an axial flow check valve, silent type, (Non slam).
8.1.2.7.5 The compressor suction pipe must have filters and the pipe arrangements must allow its removal with ease and
must be accessible from the operating level or from operating platforms.
8.1.2.7.6 Pipeline arrangements must have vents and purges that allow pressure to be released. In the case of process
gases, these must be sent to the vent.
8.1.2.8
Piping Arrangement in Pumps
8.1.2.8.1 In suction and discharge piping, manually operated blocking valves must be accessible to personnel and as close
as possible to the pumps, to reduce the volume of purged product, and must have figures eight, see Figure 20 .
8.1.2.8.2 Pipeline arrangements with swing-type check valves should have the valve in a horizontal position.
8.1.2.8.3 Pipeline arrangements must have sufficient space to facilitate access to perform maintenance and removal of
equipment and filter cleaning.
8.1.2.8.4 The Eccentric reduction in the suction of horizontal pumps should be with the flat face (flat side) facing up, as
shown in Figure 20.
8.1.2.8.5 The pump suction pipe must include a permanent filter with purge, which can be removable without the need to
disassemble the pipe. Permanent conical type filters are not accepted. Purges must be installed in the lower part of the pipe.
8.1.2.8.6 The purges of the pumps that are compatible must be collected in a common head and channeled to the
corresponding drain.
8.1.2.8.7 The length of the straight section of pipe between the pump suction nozzle and first connection (elbow, tee, valve,
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reduction, permanent filter) or obstruction, must be established between the contractor and the pump manufacturer, to
ensure the reliability of its operation.
Figure 20. Typical Piping Arrangement in Pumps
(The figure does not imply a specific design).
8.1.2.9 Piping Arrangements in Towers and Vessels
8.1.2.9.1 Pipeline arrangements of fractional towers must have a minimum slope of 2 percent to
ensure free runoff to the process equipment (condenser, accumulator, among others), as shown in
Figure 21.
8.1.2.9.2 The nozzles for process services should be oriented towards the raised pipe supports of
the plant.
8.1.2.9.3 Valves, instruments, inspection hatches, among others, must be accessible from platforms
and stairs.
Figure 21. Piping Arrangement in Fractionating Column
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8.1.2.10 Pipe arrangements for breathing air, instruments, plants, seals and combustion
8.1.2.10.1
8.1.2.10.2
8.1.2.10.3
The discharge pipe of compressors or blowers must have manually operated check valves and check valves.
Not applicable
The suction pipe of the blowers must be made of stainless steel, from the outlet nozzle of the filtering system
and to the nozzle of the blower, to prevent the formation of rust or steel scales that damage the internals of the blowers.
8.1.2.10.4 The breathing air pipe system must be dedicated and independent of the instrument air pipe. The breathing air
pipe must be at least 304L stainless steel, from the conditioning package and to the air intake stations.
Figure 22. Piping Arrangement for Breathing Air Intake Connections|
8.1.2.10.5
The intakes for breathing air must be DN 25 (NPS 1) with 4 quick connectors of DN 8 (NPS ¼), with safety lock.
See Figure 22.
8.1.2.10.6 The air intake of compressors and blowers should be located and oriented so as to facilitate the entry of
contaminant-free air. Its design must avoid the entrance of rain and fauna.
8.1.2.10.7 The air heads of the plant and instruments in integration must have a slope towards the drain points at the low
points and in the elevation changes of the air head. The drain arrangement must have a block valve and condensate trap at
floor level.
8.1.2.11 Piping Arrangements Minimum at Battery Limits.
8.1.2.11.1
All Pipes in their battery limit must have a double blocking valve, with figure eight or blanking-spacer plate, with
purge, drain or vent as appropriate; as shown in Figure 23; except for services or cases in which authorized PEMEX
personnel or the Licensor, indicate another requirement for the Project.
8.1.2.11.2 Not Applicable
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Figure 23. Piping Arrangement at Battery Limits
8.1.2.11.3
Battery limit arrangements for pipes with Class 300 or higher, or with operating temperature of 100 ° C (212 °
F) or greater, should be checked to determine if they require equalizer line with double locking valve and figure eight, with
purge, drain or vent according to the service, as shown in the first detail of Figure 23.
8.1.2.11.4 Not applicable
8.1.2.11.5
In special cases and when Pemex so requests, figure eight or blind-spacer may be replaced by a "Sliding
shutter".
8.1.2.12 Piping Arrangement in Direct Fired heaters
8.1.2.12.1
Pipeline arrangements for process fluids must include two blocking valves; one manually operated and another
automatic on the inlet lines to the heater, as well as a manual blocking valve and a check valve in the output current, unless
the technologist specifies a different arrangement and is confirmed in the HAZOP recommendations.
8.1.2.12.2
The valves mentioned in the preceding paragraph must be located at least 15 m, measured horizontally from
the direct fire heater as shown in Figure 24, and must include connections for the instrumentation required for the equipment.
8.1.2.12.3 Sockets for household steam flushing of ovens or direct fire heaters, as well as a ring that allows a steam curtain
to form on the periphery of the equipment, must be included.
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Figure 24. Piping Arrangement for Direct Fired Heater
8.1.2.12.4
Pipeline arrangements for combustible gas, must include manual blocking valves before the fuel gas skate to
pilots and burners, the valve must be ball, and must be located at a distance not less than 15 m, measured horizontally with
respect to the direct fire heater skid, as shown in Figure 25 and should include valves and connections for the instrumentation
required for the equipment.
por alta presión
Figure 25. Piping Arrangement for Combustible Gas
8.1.2.13 Piping Arrangement for Vents
8.1.2.13.1 Pipeline arrangements in pressure relief valves and vent systems must comply with ET-031-PEMEX,
section 322.6 of ASME B31.3 and the following:
8.1.2.13.2 The horizontal pipe must have a slope, which allows free runoff of liquids and condensates to the
accumulator or seal tank.
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8.1.2.13.3 The pipe must not have swings, dead legs or arrangements that accumulate liquids, generate back
pressure, limit or hinder the free flow of gases and liquids.
8.1.2.13.4 The inserts on the heads should be projected at an angle of 45 ° from the top of the head in the
direction of flow as shown in Figure 26.
8.1.2.13.5 The discharge pipes of the relief valves must be self-draining to eliminate the accumulation of liquids
downstream of the valves and must comply with API 520 part II.
Figure 26. Piping Arrangement for Pressure Relief Valves
8.1.2.13.6
In the arrangements of pressure relief valve pipes in equipment that under no circumstances should
be left unprotected, such as storage spheres, reactors, distillation columns, and / or equipment that require plant
shut down for maintenance , must have two relief valves with 100 percent pressure relief capacity, each; unless
PEMEX and / or the Licensor indicate something different; always complying with API 520 part II.
8.1.2.13.7
Pipe arrangements for thermal expansion pressure relief valves in heat exchangers must have a
8.1.2.13.8
manually operated shut-off valve, with discharge pipe to a drain cup or, if applicable, in accordance
with 8.1 .2.13.5.
8.1.2.13.9
Pressure relief valves that discharge into the atmosphere should only be specified for substances
that do not pollute the environment, such as water vapor and air; and must discharge to a high and safe place for
personnel; and must have a hole of 6.4 mm (1/4 in) in diameter at the lowest part of the pipe, as shown in Figure
27.
Discharge to a
safe place
Pressure relief valve
6.4 mm (¼ in) orifice in the
pipe lowest point
Figure 27. Atmospheric Pressure Relief Valve
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8.1.2.14 Nipples Basic Arrangement (NBA)
The basic arrangement nipples (NBA) is the arrangement formed by pieces of 2 ӯ or smaller,
between a line or equipment and the first blocking valve in process services or hazardous substances, and can
be made up of as follows:
a)
Integrally reinforced connection (Nipple Outlet or nipple pipette) plus valve.
b)
Integrally reinforced connections such as Socket Weld Outlet or Butt Weld Outlet, plus nipple and valve.
c)
Integrally reinforced connections such as the Valvolet.
8.1.2.14.1
8.1.2.14.2
In NBA, all vents, drains or purges must be channeled to safe discharge points in accordance
with 8.1.2.15, where appropriate with plug, flanges or nipple and plug; as appropriate.
8.1.2.14.3
Integrally reinforced connections (Nipple Outlet or nipple pipette) must have a minimum length
of 90 mm (3.5 in) for pipes without thermal insulation system and maximum length of 165 mm (6.5 in) for pipes
with thermal insulation system, so that the valve handwheel does not clog.
8.1.2.14.4
In NBAs the minimum Schedule of the nipple must be 160 for carbon or low and medium alloy
steel pipes.
8.1.2.15 Arrangements for Drains, Vents and Purges
8.1.2.15.1
Permanent purges drain and vents must comply with what is indicated in 8.1.2.1.16 to 18.
Except for the arrangements required by the Licensor.
8.1.2.15.2
Purges, drains and vents in Class 600 pipe must be specified with double locking valve, gate
type.
8.1.2.15.3
Purges for Class 900 and larger pipes must be specified with a double blocking valve; the first
type gate and the second type globe, for drains and vents both valves must be gate type.
8.1.2.15.4
For the hydrostatic test the pipe must have drains at the lowest points and vents at the highest,
with an integrally reinforced connection (Threaded Outlet). After the hydrostatic test, a solid bar plug must be
installed and weld bead applied to the threaded joint, for its seal.
8.1.2.15.5
In the purges, drains and vents of service pipe with dirty substances that present a risk of
plugging, the basic arrangement of nipples must be replaced by piston-type valves with integrated coupling. In
these closed position valves, the piston must be flush with the inner wall of the pipe.
8.1.2.15.6
Inside plants, drains and purges must be channeled to drains according to their service, they
must not be discharged to the environment or to the floor.
8.1.2.15.7
Pipeline arrangements must have sufficient space for the purge valves to be operated without
obstructions or maneuvers that put personnel at risk.
8.1.2.15.8
Drain arrangements should be minimized in “L” shape, or in more than one plane; When these
are unavoidable, they must be installed a support that avoids overexertion that could damage their mechanical
integrity. They should preferably be aligned under the longitudinal axis of the pipe.
8.1.2.16
Arrangements for Instruments Connections
8.1.2.16.1
Arrangements for instruments should allow the instrument to be removed with the pipeline in
operation, without personnel being exposed to substances. Arrangements must have an isolation, purge and /
or vent valve, and comply with API RP 551.
8.1.2.16.2 The pressure gauge arrangement must have a gate type valve on the head and a vent or purge valve
that allows the pressure gauge to be relieved of pressure.
8.1.2.16.3 Arrangements for instruments must be designed with (Nipple Outlet) or nipple pipette with gate valve.
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This type of arrangement does not apply to flanged instruments. The arrangement after the valve must be
complemented as specified in the corresponding typical instrument installation.
8.1.2.17 Arrangements for Sampling Points
8.1.2.17.1
Arrangements for sampling points should allow the sample to be taken with the pipeline in operation,
without personnel being exposed to the substances. Arrangements must have a blocking, purge and / or vent
valve in accordance with 8.1.2.15 and the type of sampling device.
8.1.2.17.2 The arrangement of sampling of liquids in horizontal pipes should be in the middle part of the pipe to
ensure that there is no gas interference.
8.1.2.17.3 Gas sampling in horizontal pipe must be at the top of the pipe to ensure that there is no interference
by liquids.
8.1.2.17.4 The typical arrangement for conventional sampling should be in accordance with the following unless
PEMEX or the Technologist or Licensor indicates something different.
a) It must have a minimum internal projection of 25 mm from the tube, according to Figure 28.
b) In clean fluids the sampling control valve must be of the ¼ turn ball type, provided with a return spring
actuator (Deadman), which provides a secure seal. The diameters that are allowed are DN 8 and DN 15
(NPS ¼ and NPS ½), with ASME thread B1.20.1, of stainless-steel ASTM A182 / A182M-13 Gr. F316 in
Class 3000 or greater.
c) In the sample of pipes or vessels, which contain liquids with sudden vaporization such as LP Gas, two
valves separated one meter from one another must be included; The valve next to the head or equipment
must be ball type ¼ turn, the valve at the end, of the gate type, providing that the fluid trapped between
the valves can be purged.
Figure 28. Arrangement for Sampling Points
Figure 29. Piston type valve arrangement
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8.1.2.17.5
The pipe arrangement for sampling of fluids with solids that present a risk of clogging, such as the
sulfur plant process service, should include piston-type valves, see Figure 29.
8.1.2.18 Arrangement for Steam System Piping
8.1.2.18.1
Medium and low-pressure steam systems should be designed with runoff legs (condensate pots)
and steam traps. The quantity, dimension, type and location of condensate pots and steam traps must be
determined during detailed engineering, for the volume of condensate that is generated, and in the following
cases at least:
a)
b)
c)
d)
e)
f)
g)
Before manually operated blocking / isolation valves.
Before pressure and temperature control valves.
Before the thermal expansion loops (curves), see Figure 30.
Before an increase in elevation.
At the end of the heads.
Where the possibility of condensate accumulation may exist.
For horizontal straight sections, the separation must be a maximum of 45 m for low pressure steam
and 60 m for medium pressure steam.
In the case of a pipe with saturated steam service that, due to its design and distances, condensate formation
may have, runoff legs must be installed.
Figure 30. Runoff Leg in Expansion Loops
NOTE. The possibility that the steam flow could be “bidirectional” should be analyzed, since in these cases
they should install condensate traps on both sides of the loop”.
8.1.2.18.2 The arrangement of the condensate traps must be in accordance with the typical of Figures 31A,
31B, 31C, 31D and 32. The minimum diameter of the condensate traps must be in accordance with the
following, even when by calculation result in smaller diameters.
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Figure 31A. Typical Arrangement for Runoff Legs and Steam Traps for Smaller Diameters
Figure 31B. Typical Arrangement for Runoff Legs and Steam Traps for 3” Diameter Lines
Figure 31C. Typical Arrangement for Runoff Legs and Steam Traps for 4” and 10” Diameter Lines
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TABLE 1
CONDENSATE LEG DIMENSIONS
Diam. Header Diam. Leg
12"
14"
16"
18"
20"
24"
30"
36" to 42"
6"
8"
8"
10"
10"
12"
16"
18"
Length (Note 2)
Diam. Drain
450 mm
550 mm
600 mm
700 mm
800 mm
900 mm
1140 mm
1350 mm
1"
1"
1"
1 1/2"
1 1/2"
1 1/2"
1 1/2"
1 1/2"
Figure 31D. Typical Arrangement for Runoff Legs and Steam Traps for 12” Lines and Larger
8.1.2.18.3
The steam trap arrangement must discharge to the corresponding condensate head. It must include
isolation valves, steam trap with drain and integrated filter, as well as bypass, according to figure 33, and flanges
or integral factory arrangement, which allow the easy disassembly of the trap for maintenance .
8.1.2.18.4 Steam traps must comply with ASME PTC 39: 2005 and ASTM F1139-88.
8.1.2.18.5 Main header block valve arrangements for high pressure steam service must have a pressure
equalizer line, for medium and low steam pressure, check if equalizer line is required.
Figure 32. Typical Arrangement for Condensate Traps
Figure 33. Arrangement for Steam Traps
8.1.2.18.6
Steam traps should be located at the level of the finished floor and without obstructing other
facilities or traffic in the area, so that they are safely accessible for operation and maintenance.
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8.1.2.18.7
Piping branches and derivations for steam distribution must be located on the top of the heads,
avoiding the condensate carry over, and have a manual blocking valve (root valve), located closest to the
head, without condensate entrapment.
8.1.2.18.8 Steam inlets at service stations must be DN 20 (NPS ¾), the terminal nipple must be made of
carbon steel with a threaded quick connector made of stainless-steel ASTM A312 TP 304.
8.1.2.19 Package Equipment
8.1.2.19.1
The inlet or outlet pipes of the package equipment must be designed with flanged ends at their limit
of the package equipment.
8.1.2.19.2 The pipeline and pipeline arrangements of the package equipment must comply with this
specification unless otherwise indicated by the Technologist or Licensor.
8.1.2.19.3 In package equipment all brackets, guides, directional stops, springs, hanging brackets must be
confined within the limits of the package equipment. The forces and moments at the points of interconnection
with the lines outside the package must not cause or transmit efforts to the pipeline that is interconnected.
8.1.2.19.4 The piping of the package equipment must be secured to avoid damage to the equipment and / or
internal materials during transport and indicated in orange the temporary elements that must be removed after
installation.
8.1.2.20 Piping Arrangements for Filling Stations
8.1.2.20.1
Pipeline arrangements on the filling islands must have sufficient space to allow personnel access
and contain protective barriers at both ends of the island for pipeline protection.
8.1.2.20.2 The height of the connection of the filling arm must be in accordance with the dimensions of the
filling system (auto-tank or car-tank) and according to the fluid.
8.1.2.20.3 Must have an air, water and steam service station, and when specified, breathing air.
8.1.2.20.4 Pipeline arrangements of the islands for the discharge or filling of hydrocarbons or pollutants into
the environment must have a return line of vapors to the vapor recovery system.
8.1.2.21 Piping Arrangement for Showers and Eyewash Stations
They should be projected in clear areas with easy access, where hazardous chemicals are handled and personnel
are exposed to splashes and / or spills, such as when cleaning filters.
They must have a connection for transmitting the operating signal of these systems.
The supply, installation and testing of the shower and eyewash package must comply with ANSI Z358.1-2014. The
material must be made of stainless steel with a quick-acting valve operated when stepping on a platform and / or
pedal located on the floor.
Eyewash with two spray heads, in stainless steel, that provides a gentle dew to the face and eyes, and an instantacting ball valve using a flag actuator.
8.1.2.22 Piping Identification
The aerial (overhead / above ground) piping must be identified in accordance with ET-009-PEMEX.
8.1.2.23 Anticorrosive Protection
8.1.2.23.1 All the aerial pipe of carbon steel, low and medium alloy steel must be protected with anticorrosive
coatings for its handling, transport, storage, work development and its definitive installation; which must comply
with the ET-053-PEMEX, and for the underground pipeline with the ET-026-PEMEX with mechanical protection
extending it over the air-ground interface up to 50 cm above the finished floor level, said protection must
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withstand UV rays.
8.1.2.23.2 The galvanized coating of the pipes must comply with ET-281-PEMEX. All galvanized aerial pipe
must be identified in accordance with ET-009-PEMEX.
8.1.2.23.3 Carbon steel and stainless-steel metal pipe with heat insulating system must have an anticorrosive
coating that complies with NACE SP0198.
8.1.2.23.4 Stainless steel pipes without heat insulating system should not be applied with an anticorrosive
coating system.
8.1.3
Flexibility and Piping Supports
8.1.3.1 Pipe Flexibility
8.1.3.1.1 The pipeline must be designed to have a structural behavior that resists the operating, design and
special conditions to which it is subjected, with the flexibility necessary to control expansions and / or
contractions, as well as movements or displacements of the supports, supports for pipe, and equipment, without
the pipe having excessive deformations that cause leaks excessive stress, or failures among other adverse
effects or that the pipe induces these to the facilities.
8.1.3.1.2 The pipeline must be designed and calculated with ASME B31.3, to withstand pressure loads,
temperature, environmental conditions (ice, hail), dynamic effects (impact, wind, earthquake, vibration and
reaction forces) , weight, fatigue and any combinations thereof, in accordance with paragraph 301 of the
mentioned code.
8.1.3.1.3 For the determination of the resulting loads, at least the load cases indicated below, and combinations
of Table 3 should be applied, in which the friction induced loads should be considered:
a) Operating charges
b) Thermal loads
c) Occasional loads (earthquake, wind among others)
d) Loads under test
MINIMUM LOAD CASES TO ANALYZE
CASE
TYPE
Temperature + Displacements
PERMISSIBLE
EFFORT
ASME B31.3
By displacements
SA, paragraph 302.3.5 (d)
Sustained
Sh, paragraph 302.3.5 (c)
Operation
Paragraph 319.1.2 or
Appendix P
Occasional loads (Wind or Earthquake) * +
sustained loads
Occasional
1.33 Sh, paragraph
302.3.6
Hydrostatic or pneumatic test
Sustained
Sy, paragraph 345.2.1 (a)
Own weight + Internal pressure + Uniform and / or
Concentrated loads
Temperature + Own weight + Internal pressure +
Concentrated and / or uniform loads +
Displacements
SA.- Range of allowable stresses due to displacement.
Sh.- Efforts permissible at the operating temperature.
Sy.- Transfer effort.
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Table 3. Load cases, minimum to analyze
8.1.3.1.4 Occasional wind and earthquake loads must be determined with the provisions of the Civil
Earthquake and Wind Works Design Manuals of the Federal Electricity Commission.
8.1.3.1.5 Valves, Instruments and accessories should not be used as pipe support.
8.1.3.1.6 The pipeline that is connected to reciprocating compressors or pumps must be designed in such a
way that it prevents the natural frequency of the system from responding to the excitation frequency of the
equipment, under the various modes of operation, applying the methods acoustic and mechanical required to
obtain the most efficient design at the lowest cost.
8.1.3.1.7 Not applicable.
8.1.3.1.8 Flexibility analyzes must be carried out using formal methods (specialized software packages) and it
must be made at least to the Pipes that meet one or more of the following conditions:
a) Pipe connected to dynamic equipment:
- DN 80 (NPS 3) and larger connected to reciprocating pumps and compressors, centrifugal
compressors and turbines whose normal operating temperature exceeds 90 ° C.
- Connected to centrifugal pumps with the following characteristics:
- DN 100 to 250 (NPS 4 to 10) with normal operating temperature of 145 ° C or higher.
- DN 300 (NPS 12) and higher with normal operating temperature of 120 ° C or higher.
- DN pipe greater than the pump nozzle and normal operating temperature of 120 ° C or
higher.
b) Piping connected to equipment with limited efforts such as: Air coolers, ejectors, heat exchangers, ovens,
boilers, steam generators, deaerators, pressure vessels, direct fire heaters, reactors, process towers,
spheres, storage tanks, burners , cold boxes, among others.
c) Pipe of non-ferrous materials such as titanium, Monel, Incoloy, among others
d) Pipeline in service with Hazardous Chemicals with health risk degree 4, in accordance with NOM-018STPS-2000.
e) Pipe with fluid in two phases (liquid and steam).
f)
Vacuum pipe (negative pressure).
g) Insulated piping
h) Transfer pipe (“transfer”).
i)
Pipeline system of burners, venting, including discharge of pressure relief valves.
j)
Pipe of DN 150 (NPS 6) and larger, with operating temperature greater than 120 ° C.
k) Pipe of DN 50 (NPS 2) and larger, with operating temperature greater than 250 ° C.
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Pipe of any diameter, with metal design temperature greater than 500 ° C.
m) Pipeline with equal and below -18 ° C (0 ° F) operating temperature.
n) Pipeline of DN 350 (NPS 14) and larger.
o) Critical service pipeline defined by PEMEX or the Technologist or Licensor.
p) Pipe in severe cyclic conditions in accordance with ASME B31.3.
q) Pipes subject to thermal gradient (such as the “banana” distortion and buckling effect).
r)
Pipe connected to equipment where differential settlement of 12 mm or greater is expected.
8.1.3.1.9 Not Applicable.
8.1.3.1.10 Not Applicable.
8.1.3.1.11 The Memoirs of Calculation of the flexibility analyzes should allow the main data of the analyzed line
(s) to be identified by themselves and include in the Isometric of Analysis the information necessary to review the
run as they are among other data the following:
a)Cover with: Project data (name and number), site of the work, calculation number and identification of the
analyzed line (s).
b)Isometric Analysis with: Path and dimensions of the pipe, material, thickness and corrosion tolerance,
flange class, identification of the line (s), diameters, fluid handled, pressure and operating temperature, design
and test, thickness and density of insulation, location, elevations of points of
interest (nodes) and type of supports, and identification of equipment nozzles.
c)
Output report of the computer run with: input data such as: number (s) of line (s), materials,
diameters, thicknesses, temperature and operating pressure, allowable stresses, modulus of elasticity,
weights considered in the calculation (pipe, valves, thermal insulation, fluid, densities, etc.), loads and
combinations of applied loads (operation, wind, earthquake, among others), and results of the run for each
load case as a summary of maximum resulting stresses , of forces and moments resulting in restrictions
(nozzles and support points), verification of compliance with forces and moments in nozzles, and other
information that allows the calculation to be revised.
d)
Plans or drawings of the connected equipment.
e)
Summary with the acceptance criteria, name and signature of the head of the flexibility analysis.
PEMEX reserves the right to verify the designs made at any time, and if in its opinion they do not comply with the
guidelines of this specification, it may reject them and require the Contractor to make new designs that do comply
with the established requirements, at the Contractor's expense.
8.1.3.1.12
8.1.3.1.13
Flexibility analyzes should be applied to complete piping systems.
Preferably, it should be sought that the pipe is capable of absorbing the thermal expansion or
contraction to which it will be subject, through its own configuration, and that the resulting displacements, loads
and stresses are within the permissible limits.
When this is not possible, one or more of the following alternatives can be used:
a) Expansion Curves (Loops)
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b) Expansion Joints, when specified by the Technologist or Licensor (under reservation and prior
approval of PEMEX)
Expansion joints must comply with the following:
a) They must not work in torsion.
b) They must not be sliding or telescopic.
c) Metal expansion joints in process lines must be specified with ASME stamping.
8.1.3.2
Piping Rests and Supports
8.1.3.2.1 The location and design of pipe supports (anchors, guides, directional stops, springs and others)
should be based on the results of the stress analysis and should consider the transmitted loads (forces and
moments) of concurrent way.
8.1.3.2.2 Pipe supports and supports must withstand the forces and moments caused by different cases and /
or load combinations.
8.1.3.2.3 The pipe arrangement must have sufficient supports to ensure that excessive loads are not
transmitted to the equipment and maintain the alignment of the pipe.
8.1.3.2.4 The supports must be permanent; Only temporary supports for hydrostatic testing are allowed.
8.1.3.2.5 All supports and rests must be manufactured with structural steel material that withstands service and
environmental conditions; Carbon steel brackets, and low and medium alloy steel must be protected with
anticorrosive coatings that must comply with ET-053-PEMEX.
8.1.3.2.6 The saddles and wear plates must have sufficient extension to maintain contact with the support
structure during its operation, with changes in temperatures, vibrations or any other action, protruding at least
100 mm at each end of the support structures.
8.1.3.2.7 Pipe supports must be located, supported or hung on structural elements. Supports are not allowed
on pipes, grilles, anti-skid plates, railings, stairs, on the floor without concrete die, among others. When the pipe
supports are located on equipment (towers, reactors, vessels, tanks, exchangers), these should be part of the
equipment from the original design and not as adds – on or prefabricated.
8.1.3.2.8 One pipe must not be supported on another; except for special cases previously approved by Pemex.
8.1.3.2.9 Preferably DN 450 Valves (NPS 18) and greater should be supported on supports.
8.1.3.2.10 Flanges must not be used as support to support the pipe.
8.1.3.2.11 Concrete, masonry or similar pipe supports must have a choked plate or structural element protruding
from the support cloth, as a contact and sliding surface between the support structure and the pipe support.
8.1.3.2.12 As far as possible, pipe welds location should not coincide with the support elements, wear plates or
back plates.
8.1.3.2.13 The pipe with slope must have saddle support type, the adjustment of the elevation must be in the
saddle; The use of shims to adjust elevations is not allowed.
8.1.3.2.14 The location of pipe supports must allow the removal of valves, instruments and equipment, without the
need to use temporary supports.
8.1.3.2.15 All pipes with thermal insulation must be supported on skids or protective belts, with a height greater
than the thickness of the insulation.
8.1.3.2.16 Not applicable
8.1.3.3
Backup Plates
8.1.3.3.1 The support elements such as saddles, ears, shoes, stumps, fastening angles, among others, must
have a back plate with “vent” hole between the support and the pipe wall.
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8.1.3.3.2 The backing plates must be of a similar or compatible material with that of the pipe, of the same
thickness as the pipe.
8.1.3.4
Wear Plates
8.1.3.4.1 The pipe from DN 80 (NPS ¾) to DN 100 (NPS 4) without thermal insulation, must not rest directly on
the structural supports; they must have a wear plate (half round) of the same material or a material compatible
with that of the pipe, and a thickness of 6 mm (¼ in).
8.1.3.4.2 The pipe of DN 150 (NPS 6) and larger without thermal insulation, should not be supported directly on
the structural supports; They must have a backing plate and a saddle.
8.1.3.4.3 Not Applicable
8.1.3.4.4 Not Applicable
8.1.3.4.5 Not Applicable
8.1.3.4.6 The “venting” holes of the backing plates and wear plates must be 6 mm (¼ in) in diameter; they must
be located outside the support so as not to be hindered by the pipe supports. The holes must be covered with
epoxy resin resistant to the operating temperature.
8.1.4
Piping Material Specification Index
8.1.4.1 The Index of material specifications (Classes) of pipes of each of the plants and areas that make up
the project must be prepared.
8.1.4.2 The index of material specifications (Classes) of pipes must contain at least the following information:
a)
b)
c)
d)
e)
f)
g)
h)
i)
Material specification (PMS)
Managed services
Design pressure and temperature
Allowable corrosion
Base material
Range (class) and flange face
Body material and internal (trim) of valves
Heat treatment
Inspection percentage
8.1.4.2.2 The Contractor must prepare the Services Index of the scope of the Project and, where appropriate,
the PMS for the services or components not covered by this specification and must be reconciled and approved
by the personnel authorized by PEMEX.
8.1.4.2.3 The Contractor must check that the PMSs of the project comply with this specification and if they find
technical discrepancies, they must request in writing their conciliation with PEMEX for the corresponding
definition.
8.1.4.2.4 For the particular case in which PEMEX establishes in the Project that the steam pipe for power
generation must be designed in accordance with ASME B31.1, the Contractor must prepare the corresponding
PMS based on it and the requirements applicable of this specification.
8.1.4.2.5 Not applicable
8.1.4.3 Piping Material Specifications
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8.1.4.2.1 In the plants with basic engineering of the Licensor, the PMS's of the same shall be applied verifying
that the specifications of materials (Classes) of the Licensors, are suitable for the operating conditions and
mechanical design, and complement them applying the requirements and restrictions indicated in this
specification, without contravening the requirements of the licensor.
8.1.4.2.2 In projects where there are no technologist or licensor specifications, the PMS's for auxiliary services
and firefighting water must be those contained in this technical specification unless PEMEX indicates in the ES
the use of PMS's services, verifying that they are suitable for the conditions of each service and, complement
them if necessary.
8.1.4.2.3 For services or service conditions not included in this specification, new specifications must be
developed, in accordance with the type of fluid and the guidelines established in this specification, for an
expectation of 20 years of service.
8.1.4.3 Nomenclature for Pipeline Material Specifications
The nomenclature to identify the new pipe specifications (Classes) is defined by the following criteria:
a) First character defines:
- T = Industrial plant facilities.
b) Second character defines the Class, as follows:
-
A = Class 150.
B = Class 300.
D = Class 600.
E = Class 900.
F = Class 1 500.
G = Class 2 500.
c) Third character is a consecutive number consisting of two digits and indicates the consecutive number of the PMS
within each Class and according to the base material. It starts from 01 and increases progressively. In the case of
a new PMS, it must start after 30.
d) Fourth character defines the base material formed by the letter "T" and a number, as indicated below:
- T 1 = Carbon Steel.
- T 2 = Low and medium alloy steel.
- T 3 = Stainless Steel.
- T 4 = Nickel and its Alloys.
- T 5 = Titanium and its Alloys.
- T 6 = Aluminum and its Alloys.
- T 7 = Tantalum and its Alloys and other non-ferrous alloys.
- T 8 = Non-metallic materials.
- TX = Material different from the previous ones.
e) Examples:
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- T-B01T3 = Installations in industrial plants (T); Class 300 (B); First specification (01), Stainless steel
-
(T3).
T-B31T3 = Installations in industrial plants (T); Class 300 (B); Contractor's first new specification (31),
Stainless steel (T3).
8.2
Not Applicable
8.3
Información que debe entregar el Contratista
8.3.1
The Contractor must prepare and deliver to PEMEX the documentation of the Pipeline Engineering, scope
of its services in accordance with this specification and the ES.
8.3.2 Catalogs, installation, operation and maintenance manuals, results of software runs, among others, which
due to their validity characteristics should not and / or may be altered with the translation into Spanish, are allowed
in English, or, failing that, in the language of origin, accompanied by a certified technical translation into Spanish,
the Spanish translation being the basis for acceptance and what follows, as well as for the manufacture and / or
construction of pipe systems.
8.3.3 The measurement units used must comply with NOM-008-SCFI-2002, “General system of measurement
units”. Exceptionally, foreign contractors may use their system of units in parentheses, placing their equivalence
before the NOM-008-SCFI-2002, which is the basis for acceptance, in terms of law, guarantees, claims, among
others, as well as for the manufacture and / or construction of the pipe.
8.3.4 The revision, verification or acceptance of the documents by PEMEX or the person designated to the
documents, such as their omission, does not release the Contractor from its responsibility to guarantee and fully
comply with this specification, and the ES, being obliged to correct to PEMEX satisfaction, any deviation, omission,
error, misinterpretation, defect, hidden vice, among others that could be incurred.
8.3.5
The Contractor, must prepare and submit for review of PEMEX, the documents indicated in the following
sub-subsections, at least, duly identified (each of them) with at least the following information:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Name and labels of the Contractor.
Name of the project.
PEMEX contract number.
Title of the document.
Document identification number.
Revision number.
Description of the review.
Date of revision.
Symbology
Name and signature of the Contractor engineer, responsible for engineering.
Name and signature of the person responsible for the quality management of the contractor.
List of content and consecutive paging.
8.3.5.1
8.3.5.2
8.3.5.3
8.3.5.4
Design bases.
Technical specifications (thermal insulation, anticorrosive coatings, steam traces, etc.)
Index of specifications of pipe materials, and specifications (PMSs).
Pipe drawings
a) Equipment arrangement plans (Plot plan).
b) Key planes (mosaics).
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c) Plans of pipes in plant (aerial and buried).
d) Elevation pipe plans with cuts and details.
e) Steam Trace plans
8.3.5.5
Isometric Index and Piping Isometrics
Which, must show all the essential information for its manufacture, containing at least: Line number, EMT, list of
permanent materials, diameters, handled fluid, operating pressure, design and test (including type), operating
temperature and design, thickness and type of thermal insulation, heat treatment (if applicable), percentage of
radiography and other non-destructive tests to be performed; dimensions, dimensions, location, elevations,
location and identification of supports, reference to the Piping and Instrumentation Diagram and continuation in
other Isometric.
8.3.5.6 Calculation Memories of:
a) Analysis of efforts in pipes
b) Calculation and / or verification of pipe thicknesses included in the PMSs in this specification and
c)
d)
e)
f)
of the new PMSs.
Blind plates greater than DN 600 (NPS 24).
Flanges greater than DN 1520 (NPS 60)
Thermal insulation
Steam Traces
8.3.5.7
8.3.5.8
8.3.5.9
Specification, and typical installation of pipe supports.
List and details of interconnections (Tie-ins).
List of materials of pipe and valve components, quantities, volumes of work and catalog of materials,
and if necessary requisition and purchase order, as specified in the ES and Contract.
8.3.5.10 Specification and data sheets of special pipe components such as: spring supports, expansion joints,
seismic supports, among others; and if necessary requisition and purchase order, as required in the ES and
Contract.
8.3.5.11 Intelligent Three-Dimensional Electronic Model.
8.3.5.12 Technical lists (list of interconnections, isometric index, lists of materials, list of specialties, steam trace
index and master list of documents).
8.3.5.13 The additional ones indicated in the contract
8.3.6
The Contractor must deliver to PEMEX the final documents of the Pipeline Engineering indicated in 8.3;
integrated in the Project Book, in its final revision (As-built or approved for construction), endorsed by the
responsible Engineer and approved by its head of quality assurance.
8.3.7
Documents and Project Book must be delivered in physical original as in electronic file in format of the
original source of creation and as many reproducible copies as PEMEX indicates in ES.
8.3.8
The Engineering and PMS documents, in their Approved for Construction version, must not include
notes, dimensions and / or indications they say; "Approximate dimensions", "field adjustment", "verify, modify and
adjust in the field", "by the contractor or supplier", "by the buyer", "by another", among others.
8.3.9
The pipe must be identified in compliance with the pipe and instrumentation diagrams and with the
corresponding nomenclature of its material specification.
8.3.10
The Project Books must comply with ET-271-PEMEX-2019 in the state as it was built (As Built).
9.
Annexes
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
18/03/2019
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
Specification
4,5
T-A01T1
T-A02T1
T-A03T1
T-A04T1
Rev. 0
Sheet 50 of 214
"New Refinery in Dos Bocas, Tabasco"
9.1 Annex 1.
9.2 Annex 2.
9.1 Anexo 1.
ET-032-PEMEX-2019
Piping Material Specification Index (Classes).
Piping Material Specifications (PMS’s)
Piping Material Specification Index (PMS).
Services
Fresh water
Cooling water
Raw water
Pretreated water
Treated water
Service water
Frozen water
Anhydrous Ammonia
Aniline
Fuel or sweet gas
Liquid benzene
Toluene
Inert gas
Butane
Ethane (gas)
Natural Gas
Regeneration gas
Non-corrosive
hydrocarbons
H2 CO2
Methane (gas)
Isopropyl alcohol
AzeoIsopropyl alcohol
Cyclohexane
Condensate from noncorrosive hydrocarbons
Crude Oil
Reduced crude oil
Hydrocarbon
Condensate
Non-corrosive
hydrocarbons
Light non-corrosive
hydrocarbons
Methanol
Light naphtha
Heavy naphtha
Noncorrosive chemical
reagents
Water - Noncorrosive
hydrocarbons
Air - Non-corrosive
hydrocarbons - water
Corrosion inhibitor
Contaminated
condensate (waterhydrocarbons)
Class,
Face,
Base
Material
Class 150 RF
CS
Class 150 RF
CS
Class 150 RF
CS
Class 150 RF
CS
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Pressure and
Temperature
Limits, Flanges 1
(ASME B16.5)
KPa @ °C
Corrosion
Allowance
mm (in)
Valve
Internal
Trim API
Radiographed
and Nondestructive
Tests
RT and PT
Heat
Treatment
and Efforts
Relief.2
1960 @ -28 to
38°
1791 @ 93°
1.6 mm
(0.063 in)
8
5
N.A.
1960 @ -28 to 38°
1770 @ 100°
1.6 mm
(0.063 in)
5
50
N.A.
1960 @ -28 to
38°
1172 @ 260°
1.6 mm
(0.063 in)
5
33
N.A.
1960 @ -28 to
38°
758 @ 350°
1.6 mm
(0.063 in)
5
20
N.A.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
Observations
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
18/03/2019
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
4,5
Services
Face,
Pressure and
Temperature
Limits, Flanges 1
(ASME B16.5)
Base Material
KPa @ °C
Diesel
Class 150 RF
CS
T-A05T1
T-A07T1
Sour gas (H2S partial
pressure greater
than 0.05 Psia)
Rich amine / spent
amine
Class 150 RF
CS passivated
Class 150 RF
CS passivated
T-A09T1
T-A12T1
T-A14NT1
T-A15T1
T-A16T1
1960 @ -28 to
38°
840 @ 350°
Valve
Corrosion
Internal
Allowance
s
mm
(in)
1.6 mm
(0.063 in)
1960 @ -28 to
38°
979 @ 75°
3.2 mm
(0.125 in)
1960 @ -28 to
38°
1830 @ 80°
3.2 mm
(0.125 in)
Trim
API
Radiographed
and Nondestructive
Tests
Heat
Treatment
and Efforts
Relief.2
N.A.
5
10
12
33
Effort Relief
NACE MR0103
16
33
NACE SP0472,
The fluid
NACE MR0103 velocity must
AND API
not exceed 1.8
RP945
m/s
1960 @ -28 to
38°
840 @ 350°
1.6 mm
(0.063 in)
5
20
N. A
Sour gas vent
Acid gas vent
Class 150 RF
CS passivated
1960 @ -28 to
38°
758 @ 371°
3.2 mm
(0.125 in)
16
20
Yes
NACE
MR0103:2012
Caustic soda up to
50%
Alkali solution (KOH)
Class 150 RF
CS passivated
1960 @ -28 to
38°
1690 @ 121°
3.2 mm
(0.125 in)
10
50
Yes
NACE SP 0403
1960 @ -28 to
38°
1172 @ 260°
3.2 mm
(0.125 in)
16
100
Yes
NACE MR103
And
NACE SP0403
1.6 mm
(0.063 in)
Various
5
N.A.
0.0 mm
(0.00 in)
8
5
N.A.
UNS
3.2 mm
(0.125 in) N08020
50
N.A.
1960 @ -28 to
38°
1065 @ 288°
1.6 mm
(0.063 in)
8
5
N.A.
1960 @ 38°
1380 @ 200°
5.0 mm
(0.200 in)
10
33
0.0 mm
(0.00 in)
8
Spent Soda and
Caustic Drainage
(service with H2S
according to NACE
MR-0103)
Firefighting water
(Fresh water)
Instrument air,
shower water and
eyewash water
Sulfuric Acid 95% or
greater
T-A18T1
Low pressure water
steam, condensate
of water steam
T-A19T1
Acid gas
Firefighting water,
dry section
(Freshwater)
Class 150 RF
CS passivated
Class 150 RF
CS
Class 150 FF
CS Galvanized
Class 150 RF
CS
Class 150 RF
CS
Class 150 RF
CS passivated
Class 150 RF
CS Galvanized
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
1875 @ -28 to
65
1875 @ -28 to
65
1960 @ 38°
1920 @ 50°
1824 @ -28 to
82°
Observations
RT y PT
Class 150 RF
CS
T-A17T1
T-A20T1
Sheet 51 of 214
Wet vent
Liquid drain (noncorrosive
hydrocarbons)
T-A13T1
T-A14T1
Rev. 0
"New Refinery in Dos Bocas, Tabasco"
Class,
Specification
ET-032-PEMEX-2019
Effort Relief
NACE SP0472
5
N.A.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
18/03/2019
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
4,5
Services
Face,
Base
Material
Pressure and
Temperature
Limits, Flanges 1
(ASME B16.5)
KPa @ °C
Crude oil
T-A04T2
Reduced crude oil
Class 150 RF
9Cr-1Mo
“AV” waste
T-A01T3
Note 3 applies
Methane (gas)
Ethane (gas)
Propane Butane
Ethylene
Methanol
Noncorrosive
hydrocarbons
Dry vent (cold)
T-A03T3
Rev. 0
Sheet 52 of 214
"New Refinery in Dos Bocas, Tabasco"
Class,
Specification
ET-032-PEMEX-2019
Noncorrosive
hydrocarbons
Class 150 RF
S. Steel.
TP 304
Valve
Corrosion
Internal
Allowance
s
mm
(in)
API
Heat
Treatment
and Efforts
Relief.2
Observations
RT y PT
5
100
Yes
Table 330.1.1
and
Table 331.1.1
(ASME B31.3)
0 mm
(0 in)
12
20
N.A.
0 mm
(0 in)
12
20
N.A.
1980 kPa @ -29 to 38°C
3.2 mm
1172 kpa @ 260°C
(0.125 in)
552 kpa @ 426°C
344 kpa @ 482°C
1896 kPa @ -190 to
38°C
1172 kPa @ 260°C
551 kPa @ 426°C
344 kPa @ 482°C
Trim
Radiographed
and Nondestructive
Tests
Class 150 RF
S. Steel.
TP 304
1896 kPa @ -190 to
38°C
1172 kPa @ 260°C
551 kpa @ 426°C
Class 150 RF
S. Steel.
TP 304
1896 kPa @ -29 to 38°C
1172 kPa @ 260°C
551 kPa @ 426°C
344 kPa @ 482°C
0 mm
(0 in)
12
20
N.A.
1896 kPa @ -29 to 38°C
1172 kpa @ 260°C
551 kpa @ 426°C
344 kpa @ 482°C
0 mm
(0 in)
12
5
N.A.
1896 kPa @ 38°C
0 mm
(0 in)
12
5
N.A.
0 mm
(0 in)
UNS
N04400
20
N.A.
0 mm
(0 in)
8
N.A.
N.A.
Closed liquid vent
(cold)
T-A04T3
T-A08T3
T-A12T3
Rich Amine
Spent Amina
Demineralized water
(from
demineralization units
up to deaerator)
Breathing Air
Hydrocarbons +
water
T-A01T4
T-A01T8
Note 3 applies
Drinking water
(underground)
Class 150 RF
S. Steel.
TP 304
Class 150 RF
S. Steel.
TP 304L
Class 150 RF
Ni-Cu Alloy
Class 150 FF
Polypropylene
(Ramdom
Copolymer)
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
1590 kPa @ -29 to 38°C
600 kpa @ 400°C
100 kpa @ 538°C
BY PROJECT AND
MANUFACTURER
Note1: For
fluid velocity
greater than
1.8 m / s Note
2: Chlorine
ppm should
be checked
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
18/03/2019
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
4,5
Services
Face,
Base
Material
T-B02T1
T-B03T1
Sheet 53 of 214
Pressure and
Temperature
Limits, Flanges 1
(ASME B16.5)
Valve
Corrosion
Internal
Allowance
s
Trim
Radiographed
and Nondestructive
Tests
Heat
Treatment Observations
and Efforts
Relief.2
KPa @ °C
mm
(in)
Class 200 FM FF
HDPE
(High density
polyethylene)
910 kpa @ 49°C
Verify with the
manufacturer
0 mm
(0 in)
N.A.
N.A.
N.A.
Drinking water
(underground)
Class 150 FF
HDPE
(High density
polyethylene)
BY PROJECT AND
MANUFACTURER
1370 kPa @ 23°C
0 mm
(0 in)
N.A.
N.A.
N.A.
Liquid Benzene
Phosphate
Nitrogen
Class 300 RF
CS
5102 kPa @ -28 to 38°C
1.6 mm
4171 kPa @ 260°C
(0.063 in)
3481 kPa @ 399°C
5
33
N.A.
Class 300 RF
CS
5102 kPa @ -28 to 38°C
1.6 mm
4171 kPa @ 260°C
(0.063 in)
3481 kPa @ 399°C
5
20
N.A.
Firefighting water
T-A02T8
(underground)
Note 3 applies With approval (UL / FM)
T-A04T8
Note 3 applies
Rev. 0
"New Refinery in Dos Bocas, Tabasco"
Class,
Specification
ET-032-PEMEX-2019
Butane
Ethane
Gas Natural
Gas LP
Fuel Gas
Sweet gas
Methane
Propane
Cyclohexane
Condensates noncorrosive hydrocarbons
Reduced crude
Non-corrosive
hydrocarbons
Methanol
Light naphtha
Heavy naphtha
Water + Noncorrosive
hydrocarbons
Fuel oil
Heating oil or thermal
Cleaning (Flushing) oil
Recovered oil
Antifoam
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
API
RT y PT
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
18/03/2019
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
4,5
Services
Face,
Base Material
Pressure and
Temperature
Limits, Flanges 1
(ASME B16.5)
KPa @ °C
T-B04T1
T-B05T1
T-B01T3
Note 3 applies
T-B01T4
Note 3 applies
T-D01T1
T-D02T1
T-D04T1
Rev. 0
Sheet 54 of 214
"New Refinery in Dos Bocas, Tabasco"
Class,
Specification
ET-032-PEMEX-2019
Medium pressure water
vapor, medium
condensate and boiler
feed water
Sour gas (H2S partial
pressure greater than
0.05 Psia)
Methane Ethane
Propane Butane
Pentane Methanol
Noncorrosive
hydrocarbons
Methane Ethane
Propane Butane
Pentane Methanol
Noncorrosive
hydrocarbons
Natural Gas
LP Gas
Fuel Gas
Methane
Ethane
Propane
Butane
Sweet gas
Fuel gas
Heavy gasoline
Condensed light
gasoline
Noncorrosive
hydrocarbons
Methanol
Nitrogen
Bitter gas (H2S partial
pressure greater than
0.05 Psia)
Water steam of 40 kg /
cm2 (3.92 MPa)
Condensate, Water to
boilers
Class 300
RF
CS
Class300
RF
CS passivated
5110 @ -28 a 38°
3760 @ 350°
Valve
Corrosion
Internals
Allowance
mm
(in)
1.6 mm
(0.063 in)
5102 kPa @ -28 a 38°C 3.2 mm
4171 kPa @ 260°C
(0.125 in)
3481 kPa @ 399°C
Class 300
4964 kPa@ -190 a 38°C
RF
3206 kpa @ 260°C
S. Steel TP 304
2792 kpa @ 426°C
0 mm
(0 in)
Class 300
RF
5102 kPa @ -50 a 38°C 1.6 mm
ASTM A333 Gr. 3
4171 kPa @ 260°C
(0.063 in)
Trim
API
RT y PT
20
12
33
NACE
MR0103:2012
12
20
N.A.
10
20
N.A.
33
SI
Table 330.1.1
and
10204 kPa@ -29 a 38°C 3.2 mm
8308 kpa @ 260°C
RF
(0.125 in)
6998 kpa @ 399°C
CS passivated
16
Table 331.1.1
(ASME B31.3)
Effort Relay
Class 600
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
10210 @ -29 a 38°
5750 kpa @ 425°
1.6 mm
(0.063 in)
N.A.
Effort Relay
5
Class 600
RF
CS passivated
Heat
Treatment Observations
and Efforts
Relief.2
8
10204 kPa@ -29 a 38°C 1.6 mm
8308 kpa @ 260°C
(0.063 in)
6998 kpa @ 399°C
Class 600
RF
CS
Radiographed
and Nondestructive
Tests
5
33
33
NACE
MR0103:2012
SI
Table 330.1.1
and
Table 331.1.1
(ASME B31.3)
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
18/03/2019
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
4,5
Services
Face,
Base Material
Pressure and
Temperature
Limits, Flanges 1
(ASME B16.5)
T-D01T3
Note 3 applies
T-D04T3
Hydrocarbons
Methane Ethane
Propane Butane
Methanol
Noncorrosive
hydrocarbons
Hydrocarbons plus
water
Methane Ethane
Propane Butane
Methanol
T-D01T4
Note 3 applies Noncorrosive
hydrocarbons
T-E01T1
T-E02T1
T-E01T2
T-E02T2
Sheet 55 of 214
Water steam of
60 kg / cm2 (5.86
MPa),
Water to boilers
Inert gas
Noncorrosive
hydrocarbons
High pressure
superheated
steam of (5.86
MPa)
Hydrocarbons +
Hydrogen +
Sulfhydric Acid
Class 600
RF
1¼Cr-½Mo
10342 kPa @ -29 to
1.6 mm
38°C
9170 kpa @ 260°C (0.063 in)
7825 kpa @ 371°C
1930 kpa @ 575°C
Class 600
RF
S. Steel
TP 304
9928 kPa @ -29 to
38°C
6412 kpa @ 260°C
5584 kpa @ 426°C
Class 600
9928 kPa @ -29 to
38°C
7101 kpa @ 260°C
6101 kpa @ 482°C
951 kpa @ 750°C
RF
S. Steel
TP 347H
Class 600
RF
ASTM A333
Gr. 3
Class 900
RF
CS passivated
Class 900
Ring Joint (RJ)
1¼Cr-½Mo
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
0 mm
(0 in)
0 mm
(0 in)
1.6 mm
10204 kPa @ -50 to
38°C
(0.063 in)
8308 kpa @ 260°C
10210 @ -29 to 38°
8630 @ 425°
Class 900
Ring Joint (RJ)
LIMITED TO:
CS passivated 8826 kPa @-29 to
371°C
Class 900
Ring Joint (RJ)
1¼Cr-½Mo
Valve
Corrosion
Internal
Allowance
s
mm
(in)
KPa @ °C
T-D01T2
Rev. 0
"New Refinery in Dos Bocas, Tabasco"
Class,
Specification
ET-032-PEMEX-2019
1.6 mm
(0.063 in)
1.6 mm
(0.063 in)
1.6 mm
15510 @ -29 to
38°
(0.063 in)
6864 kpa @ 510°C
15513 kPa @ -29 to
1.6 mm
38°C
(0.063 in)
13755 kpa @ 260°C
9307 kpa @ 482°C
Trim
API
5
Heat
Radiographed
Treatment
and Nonand Efforts
destructive
Relief.2
Tests
Observations
RT y PT
100
Yes
Table 330.1.1
and
Table 331.1.1
(ASME B31.3)
12
33
UNS
S34709
10
5
33
33
50
N.A.
Yes
At temp.
Minimum of
1093 ° C and
Thermal
Stabilization.
See Table
330.1.1
and
Table 331.1.1
(ASME B31.3)
Yes
Table 330.1.1
and
Table 331.1.1
(ASME B31.3)
5
5
50
100
Yes
Table 330.1.1
and
Table 331.1.1
ASME B31.3)
Yes
Table 330.1.1
and
Table 331.1.1
(ASME B31.3)
12
100
Yes
Table 330.1.1
and
Table 331.1.1
(ASME B31.3)
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
18/03/2019
Technical Specification
Piping Systems in Industrial Plants –
Design and Material Specifications
Particular Technical
Specification Project:
4,5
Services
Face,
Base Material
T-F02T1
T-F01T2
T-F02T2
Sheet 56 of 214
Pressure and
Valve
Corrosion
Temperature
Internal
Allowance
Limits, Flanges 1
s
(ASME B16.5)
KPa @ °C
T-F01T1
Rev. 0
"New Refinery in Dos Bocas, Tabasco"
Class,
Specification
ET-032-PEMEX-2019
High pressure steam
(9,997 MPa)
Steam condensate
Water to boiler
Inert gas Hydrogen
+ Nitrogen
High pressure
superheated steam
Startup hydrogen
Class 1500
Weldable ends
CS passivated
Class 1500
Ring Joint (RJ)
CS passivated
Class 1500
Weldable ends
1¼Cr-½Mo
Class 1500
Ring Joint (RJ)
1¼Cr-½Mo
mm
(in)
LIMITED TO:
1.6 mm
18305 kPa @ (0.063
in)
29 to 38°C
14710 kpa @
371°C
LIMITED TO:
1.6 mm
18305 kPa @ (0.063
in)
29 to 38°C
14710 kpa @
371°C
Trim
API
8
Radiographed
and Nondestructive
Tests
Observations
RT y PT
100
Yes
Table
330.1.1 and
FLANGES ARE
NOT ALLOWED
Table
331.1.1
(ASME
B31.3)
8
100
Yes
Table
330.1.1 and
Table
331.1.1
(ASME
B31.3)
LIMITED TO:
1.6 mm
14991 kPa @
(0.063 in)
486°C @ 486°C
8
100
1.6 mm
(0.063 in)
5
100
25855 kPa @
38°C
15478 kpa @
482°C
Heat
Treatment
and Efforts
Relief.2
Yes
Table
330.1.1 and
Table
331.1.1
(ASME
B31.3)
Yes
Table
330.1.1 and
Table
331.1.1
(ASME
B31.3)
and
API RP 9412008
FLANGES ARE
NOT ALLOWED
Notes for: Pipe Material Specifications (PMS) for industrial plants.
1 The operating conditions of the services must be indicated in the index of service lines and process lines; It is the Contractor's
responsibility to verify and check that the conditions of the service fluid in which the PMSs are used in the specific Project are
appropriate in their concentration, pressure, temperature, material specification and corrosion allowance with the PMS of this annex
and are inferior to the design conditions of these PMS. The mechanical design of the PMS is set by the Pressure and Temperature
Limits, according to the Range of the Flange Class.
2 The information contained in the column entitled heat treatment is independent of the manufacturing process required by the pipe
and its components according to the manufacturing processes according to their specification of materials in designation ASTM; such
as: normalized, thermal stabilization, grain size, carbon equivalent and impact tests among others. See paragraph 8.1.1.5 of Thermal
Treatments.
3 For these services, this Pipe Materials Specification, applies only upon express request of PEMEX in the Project or by specification of
the Technologist or Licensor.
4 To see each of the listed PMSs, refer to the Annex attached to this TS with links to those PMSs.
5 When in an PMS (Pipe Materials Specification) two or more valves of the same type are indicated, for example gate type with design
ET-211-PEMEX-2008, ISO 10434 or ASME B16.34, the Contractor must request the user (PEMEX), the type of valve required, which
must be specified in the Basic Data Sheets, in accordance with the Basic Engineering of Project Design.
Mexican Petroleum All rights Reserved
Pemex Industrial Transformation - Industrial Project Branch Avenida Marina Nacional #329,
Executive Tower Apartment 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Mexico City.
Partial or total reproduction is prohibited without the written permission of Petróleos Mexicanos through the
corresponding areas
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Industrial
Installations
Service: Fresh water,
Cooling water, raw water
and pretreated water,
others. See PMS Index.
Corrosion Allowance:
1,6 mm (0.063 in)
See Note 1.2
Component
Notes
Rev. 0
Sheet 57 of 214
“Dos Bocas New Refinery, Tabasco”
Piping Material Specification
Pressure and Temperature
Limits
RT
5%
1791 Kpa @ 93°C
See Note 1.1
Material: CS
Heat Treatment and / or Efforts
Relief: N/A
T-A01T1
Valve
Internals
NDT
5%
Class 150
RF Face
Welding Box for welds in DN 50 (NPS 2)
and smaller.
Butt Welds DN 80 (NPS 3) and larger
Trim 8
Diameter
(NPS)
Thickness (in) or
Minimum Schedule /
Class
Ends
Description
Pipe
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
Pipe
2.2, 2.4
650 to 1200
(26 to 48)
80
Flat
Standard
ASTM A106 Gr. B
ASTM A53 Gr. B Type E, (Ex. = 0.85)
Beveled
To be calculated by
contractor
ASTM A134 Gr. A285 C, with seams, Ex. =
0.85
Nipples
Nipple
Swage conc.
Swage exc.
Connections
Elbow 90°
Elbow 45°
Straight “T”
“T” Reduction
Coupling
Coupling
Reduction
Cap
Plug
Solid Bar
Plug
3.1
3.2
4.1
3.1, 4.2
3.1
4.5
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
Schedule same as
the pipe
20 to 50
(3/4 to 2)
3000
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
Street Elbow
3.1, 4.5
Elbow 90° long
radius
Elbow 45°
Straight “T”
Concentric
Reduction
Eccentric
Reduction
Cap Plug
5.1
80 to 600
(3 to 24)
Elbow 90° long
radius
Elbow 45°
Straight “T”
5.1
650 to 1200
(26 to 48)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
3000
Flat / Thread ASTM A106 Gr. B
Flat / Flat
Thread / Bevel
ASTM A234 Gr. WPB, MSS SP-95
Flat / Bevel
Welding Box
Screwed
Screwed
ASTM A105, ASME B16.11
ASTM A105, ASME B16.11, thread ASME
B1.20.1
ASTM A105, ASME B16.11, thread ASME
B1.20.1
ASTM A105, ASME B16.11 threads
(female - male ASME B1.20.1)
3000
Screwed
Schedule same as
the pipe
Beveled
ASTM A234 Gr. WPB-S, ASME B16.9
Schedule same as
the pipe
Beveled
ASTM A234 Gr. WPB-W, ASME B16.9
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T1 Hoja 1 de 5
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Conc Reduction
Eccentric
Reduction
Schedule same as
the pipe
Beveled
650 to 1200
Cap Plug
5.1
(26 to 48
Integrally Reinforced Connections
20 to 50
3.1, 6.1
Threaded
6.2
(3/4 to 2)
Outlet
20 to 50
6.1
Socket Weld
6.3
(3/4 to 2)
Outlet
20 to 50
6.1
Lateral Outlet
6.3
(3/4 to 2)
80 to 100
Butt Weld
6.1
(3 to 4)
Outlet
6.1
20 to 50
Nipple Outlet
6.3
(3/4 to 2)
Flanges
20 to 50
Welding Box
(3/4 to 2)
Flanges
80 to 600
Welding Neck
7.2, 101
(3 to 24)
Flanges
650 to 1200
Welding Neck
7.2, 101
(26 to 48)
Flanges
20 to 600
Blind Flanges
(3/4 to 24)
650 to 1200
Blind Flanges
(26 to 48)
50 to 600
Orifice Plate
7.3
(2 to 24)
Holding Flange
Schedule same as
the pipe
Beveled
3000
3000
3000
Schedule same as
the pipe
Screwed
Welding Box
Welding Box
Beveled
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105, MSS SP-97
150
RF
ASTM A105, ASME B16.5, Schedule 80
150
RF
ASTM A105, ASME B16.5
150
RF
150
RF
ASTM A105, ASME B16.5.
Class E
RF
ASTM A105, AWWA C207
300
RF
150
RF
Class E
RF
ASTM A105, AWWA C207, with sliding
handle (hub- type)
300
RF
ASTM A105, ASME B16.5.
8.1
20 to 50
(3/4 to 2)
Gate
valves
8.1
8.3
50 to 600
(2 to 24)
150
RF
Gate
valves
8.1
650 to 900
(26 to 36)
150
RF
Globe valves
8.1
20 to 50
(3/4 to 2)
800
Globe valves
8.1
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
Gate
valves
80 to 300
(3 to 12)
ASTM A234 Gr. WPB-S, ASME B16.9
Flat
7.4
Long Neck
Flange
Valves
ASTM A234 Gr. WPB-W, ASME B16.9
3000
80 to 600
(3 to 24)
650 to 1200
(26 to 48)
25 to 50
(1 to 2)
Sliding
Flanges
Sliding
Flanges
Sheet 58 of 214
“Dos Bocas New Refinery, Tabasco”
650 to 1200
(26 to 48
5.1
Rev. 0
800
150
Welding Box
Welding Box
RF
ASTM A105, ASME B16.47 Series A (MSSSP44)
ASTM A105, ASME B16.36, welding neck,
bore same as pipe internal diameter.
ASTM A105, ASME B16.5
ASTM A105, Trim 8, OS&Y, ISO 15761,
fixed handwheel, rising steam,, screwed
Bonnet, solid gate
ASTM A216 Gr. WCB, ASME B16.34,
Trim 8 conforming to ISO 10434, OS&Y,
fixed handwheel, rising stem, flanged
bonnet, solid or flexible gate.
ASTM A216 Gr. WCB, ASME B16.34,
Trim 8 conforming to ISO 10434, OS&Y,
ASME B16.47 Series A flanges, fixed
handwheel, rising stem, flanged bonnet,
solid or flexible gate.
ASTM A105, Trim 8, OS&Y, ISO 15761,
rising handwheel and stem, screwed
Bonnet.
ASTM A216 Gr. WCB, ASME B16.34,
Trim 8 conforming to API STD 623,
OS&Y, flywheel and rising stem, flanged
bonnet.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T1 Hoja 2 de 5
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Check
valves
8.1
8.4
Check
valves
8.1
8.4, 8.6
Check
valves
8.4
8.6
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 59 of 214
“Dos Bocas New Refinery, Tabasco”
20 to 50
(3/4 to 2)
800
80 to 600
(3 to 24)
150
RF
650 to 900
(26 to 36)
150
RF
Welding Box
ASTM A105, Trim 8, ISO 15761, ball or
piston type to work in horizontal / vertical
position, screwed cover.
ASTM A216 Gr. WCB, API 594 type B,
Trim 8, flanged cover, swing type and
stop integrated to the body that limits the
opening of the disc.
ASTM A216 Gr. WCB, API 594 type A,
Trim 8, ASME B16.47 Series A flanges,
two partition gate, reinforced spring..
Gaskets
20 to 600
(3/4 to 24)
650 to 1200
(26 to 48)
Gaskets
25 to 600
(1 to 24)
150
RF
150
RF
300
RF
Spiro-metallic, with centering ring
(exterior) of carbon steel ASTM A36 /
A36M: 2012 with anticorrosive coating,
flexible graphite filling (asbestos-free),
winding and inner ring of 304 Stainless
Steel, ASME B16.20 for flanges ASME
B16.5, bore equal to the pipe inside
diameter.
Spiro-metallic, with metal centering
(exterior) carbon steel ring ASTM A36 /
A36M: 2012 with anticorrosive coating,
flexible graphite filling (asbestos-free),
winding and inner ring of type 304
Stainless Steel, ASME B16.20, for ASME
B16.47A flanges (MSS-SP44), bore
equal to the pipe inside diameter.
Spiro-metallic, with centering ring
(exterior) of carbon steel ASTM A36 /
A36M: 2012 with anticorrosive coating,
flexible graphite filling (asbestos-free),
winding and inner ring of type 304
Stainless Steel, ASME B16.20 for
flanges ASME B16.5, bore equal to the
pipe inside diameter.
Bolts
Threaded ends, ASTM A193 Gr. B7,
ASME B1.1 class 2A threads.
Stud Bolts
ASTM A194 Gr. 2H, threads ASME
B1.1 class 2B..
Nuts
Miscellaneous
Figure Eight
(integral)
20 to 300
(3/4 to 12)
150
RF
ASTM A285 Gr. C, ASME B16.48
Figure Eight
(separated blind
joint and spacer)
350 to 600
(14 to 24)
150
RF
ASTM A285 Gr. C, ASME B16.48
Schedule same as
the pipe
Weldable
“T” Type Filters
12.1
“Y” Type Filters
12.1
80 to 600
(3 to 24)
20 to 50
(3/4 to 2)
RANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
600
Welding Box
ASTM A234 Gr. WPB-W, ASME B16.9
ASTM A105, ends ASME B16.11
GRAPH T-A01T1 BRANCH CONNECTIONS
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T1 Hoja 3 de 5
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 60 of 214
“Dos Bocas New Refinery, Tabasco”
Notes:
1.1
1.2
2.2
2.4
3.1
3.2
4.1
4.2
4.5
5.1
6.1
6.2
6.3
7.2
7.3
7.4
8.1
8.3
8.4
8.6
12.1
101
The pressure and temperature limits of this specification are based on the range of the corresponding flange class,
indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so the
pressure and temperature restrictions recommended by the manufacturer should be consulted.
The sacrificial thickness is included in the wall thickness assigned to the pipe, connections and fittings for this
specification, for the purposes of the allowable corrosion that can be tolerated during the life of these parts.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress
analysis
b. For pipes installed in pipe racks (raised frames) and above ground pipes the minimum acceptable length of the
pipe is 12 m.
The pipe air-ground interface must be coated with high-solids liquid epoxies, resistant to ultraviolet rays, and for
underground pipes that meet the requirements of ET-026-PEMEX-2019.
The threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where threaded plugs
are installed..
a. In the sockets the end with the largest diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50
(NPS 2); the Schedule must be equal to that of the pipe to be welded.
b. The threaded end sockets for use in pressure taps (pressure transmitters and gauges), the threaded joints must
be sealed with welding..
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited..
Cap Plug for terminal ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar plugs are only allowed in openings without the use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate
holder flanges, seal with welding after installation.
It is forbidden to use pipe connections field fabricated or fittings such as wedges or “fish mouths” and flat lugs. All
branches must be built with factory manufactured accessories.
a. Welding of the reinforced connectors to the head must be fully penetrated in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated
in the specification is the branch.
The fully reinforced Threaded Outlet connector, its use is limited for purges and vents that must be removed after
the hydrostatic or pneumatic test. Once the test is finished, they must be sealed with a solid bar plug and sealed
with welding at the threaded joint. Purges and vents that are required during startup, operation or maintenance must
be Nipple Outlet or Nipple pipette.
For fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet, Socket Weld Outlet, and smaller connections, weld
box welds should be inspected, with the percentage indicated in the pipe specification.
Weld neck flanges must have the same Schedule to the pipeline to which they will be attached.
The orifice plate holder flanges and pipe to which they are to be joined must be of the same bore and thickness.
Before welding, the flange must be aligned to the pipe and there should be no steps. After welding it must be grinded
and polish the inner weld (to mirror finish), there should be no restrictions, bumps or sinking. All threaded joints
(nipples and solid bar plugs) must be sealed with welding.
Long neck flanges for thermowell sockets / nozzles, the inner diameter must be specified to relate it to the outer
diameter of the thermowell and ensure insertion, the minimum allowed Class is 300.
a. On NPS 24 and smaller valves, flanges must comply with ASME B16.5 dimensions, and larger with ASME
B16.47 Series A dimensions.
b. The manufacturer must specify on a stainless-steel metal label, attached to the body and with impact letter on
the valve body: identification number, types of bonnet gasket and stuffing box packing.
c. All valve hardware must be of the appropriate specification and compatible with the material of the valve body.
d. Handwheel of all valves must be solid, hollow handwheels are not allowed.
DN 50 Gate Valves (NPS 2) with flanged ends, flanges and body must be in one piece (not welded), are only
allowed in equipment nozzles, for instrument sockets such as magnetic and optical level indicators, and level
transmitters.
The check valves must be installed horizontally, to ensure the closure of the gate and prevent the return of fluids.
The use of ear valves or two partitions disc type installed between flanges is prohibited.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment
to be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, figures eight must also be included in the blocking valves to
ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
Weld neck flanges must be installed in weldable connections. In other cases, sliding flanges must be installed.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T1 Hoja 4 de 5
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 61 of 214
“Dos Bocas New Refinery, Tabasco”
Note: Tube-to-tube inserts welded directly to the head must be analyzed in particular, and reinforced if required, in
accordance with ASME B31.3 304.3
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T4 Hoja 2 de 5
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Allowable Corrosion:
0 mm (0 in). See Note 1.3
See
Notes
Rev. 0
Sheet 62 of 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
Service: Methane (gas),
Ethane (gas), Propane,
Butane, Methanol,
Ethylene. Noncorrosive
hydrocarbons.
See Note 1.1
Component
ET-032-PEMEX-2019
18/03/2019
Piping Material Specification
T-A01T3
Pressure and Temperature Limits
See Note 1.2
Material: Stainless Steel
Type T304
Heat Treatment and Effort Relief:
N.A.
Diameter
DN (NPS)
Thickness (in) or
Schedule minimum /
Class
RT
20 %
NDT
See Note
6.3,
additional
(Class 150)
RF Face
Valve Internals Welding for welding box in DN 50 (NPS
Trim 12
2) and smaller; Butt welds DN 80 (NPS 3)
and larger
Ends
Description
Pipe
2.1
2.2
Pipe
20 to 50
(3/4 to 2)
50
(2)
80 to 500
(3 to 20)
2.2
80S
Flat
40S
10S
Beveled
600
(24)
ASTM A312 Gr. TP304, ASME B36.19M,
seamless
ASTM A312 Gr. TP304, ASME B36.19M,
seamless or with seam, with Ex= 0.85 as
minimum
ASTM A312 Gr. TP304, ASME B36.19M,
seamless or ASTM A358 Gr. TP304, ASME
B36.19M EFW straight longitudinal seam,
with Ex= 1.0
Nipples
Nipple (in line)
3.1
20 to 50
(3/4 to 2)
Conc. Socket
Exc. Socket
3.2
20 to 50
(3/4 to 2)
4.1
20 to 50
(3/4 to 2)
Connections
Elbow 90°
Elbow 45°
Straight “T”
Reduced “T”
Cross
Coupling
Reduced
coupling
Cap Plug
Solid Bar Plug
Street Elbow
4.2
4.5
20 to 50
(3/4 to 2)
4.5
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
80S
Schedule same as
the pipe
3000
For welding
/ screwed
with
welding
For welding
/ screwed
with
welding
Welding Box
ASTM A312 Gr. TP304, ASME B36.19M,
seamless.
ASTM A403 Gr. WP304, MSS SP-95
ASTM A182 Gr. F304, ASME B16.11
ASTM A182 Gr. F304, ASME B16.11,
thread ASME B1.20.1
3000
Screwed
ASTM A182 Gr. F304, ASME B16.11,
threads (female - male ASME B1.20.1)
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T4 Hoja 2 de 5
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
6.1
Nipple Outlet or
Nipple pipette
6.1
6.3
Rev. 0
Sheet 63 of 214
“Dos Bocas New Refinery, Tabasco”
Elbow 90° Long
Radius
Elbow 45° Long
Radius
5.1
Straight “T”
80 to 600
5.3
Reduced “T”
(3 to 24)
Conc. Reduction
Exc. Reduction
Cap Plug
Integrally Reinforced Connections
20 to50
6.1
Threaded Outlet
(3/4
to 2)
6.2
20 to 50
6.1
Socket Weld
(3/4 to 2)
6.3
Outlet
20 to 50
6.1
Lateral Outlet
(3/4 to 2)
6.3
Butt Weld Outlet
ET-032-PEMEX-2019
18/03/2019
80 to 250
(3 to 10)
20 to 50
(3/4 to 2)
Schedule same as
the pipe
Beveled
ASTM A403 Gr. WP304, S/C, ASME B16.9
3000
BeveledScrewed
ASTM A182 Gr. F304, MSS SP-97
3000
3000
BeveledWelding
Box
BeveledWelding
Box
ASTM A182 Gr. F304, MSS SP-97
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
Schedule same as
the pipe
Beveled
ASTM A182 Gr. F304, MSS SP-97
3000
BeveledFlat
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
150
RF
150
RF
150
RF
300
RF
300
RF
Flanges
Welding Box
Flange
Welding Neck
Flange
7.1
7.2
Blind Flanges
Orifice Plate
Holder Flanges
Long Neck
Flange
Valves
7.3
7.4
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
20 to 600
(3/4 to 24)
50 to 600
(2 to 24)
25 to 50
(1 to 2)
Gate
Valve
8.1
8.13
8.19
20 to 50
(3/4 to 2)
800
Welding
Box
Gate
Valve
8.1
8.3
8.13
8.19
80 to 600
(3 to 24)
150
RF
Globe Valve
8.1
8.13
8.21
Globe Valve
8.1
8.21
Check
Valve
8.1
8.4
Check
Valve
8.1
20 to 50
(3/4 to 2)
800
80 to 300
(3 to 12)
150
20 to 50
(3/4 to 2)
800
80 to 600
150
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Welding
Box
RF
Welding
Box
RF
ASTM A182 Gr. F304 ASME B16.5,
Schedule same as the pipe
ASTM A182 Gr. F304 ASME B16.5,
Schedule same as the pipe
ASTM A182 Gr. F304 ASME B16.5.
ASTM A182 Gr. F304, ASME B16.36,
welding neck, bore same as the pipe
ASTM A182 Gr. F304, ASME B16.5.
ASTM A182 Gr. F304, Trim 12, OS&Y, ISO
15761, Fixed handwheel, rising stem,
screwed bonnet, solid gate, with pressure
equalizing orifice.
ASTM A351 Gr. CF8, Trim 12, OS&Y, ISO
10434, fixed handwheel, rising stem,
flanged bonnet, with pressure equalizer
orifice, wedge to be specified by Pemex in
the Project..
ASTM A182 Gr. F304, Trim 12, OS&Y, ISO
15761, rising handwheel and stem,
screwed bonnet.
ASTM A351 Gr. CF8, Trim 12 conforming
to API STD 623, OS&Y, ASME B16.34,
flywheel and rising stem, flanged bonnet.
ASTM A182 Gr. F304, Trim 12, ISO 15761,
ball or piston type for working in horizontal /
vertical position, screwed cover.
ASTM A351 Gr. CF8, Trim 12, API 594
type B, cover flange, swing type and stop
integrated to the body that limits the
opening of the disc.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T4 Hoja 2 de 5
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Butterfly
Valve
8.1, 8.6
8.20
8.21
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 64 of 214
“Dos Bocas New Refinery, Tabasco”
80 to 600
(3 to 24)
150
RF
ASTM A351 Gr. CF8, triple eccentricity,
solid one-piece seal ring, integral body
seat, metal-metal seal, API 609 category B
design, ISO 10497 fireproof. Flanged
body. The design must comply with 8.2.1
and 8.10 of ET-204-PEMEX-2012.
Gaskets
20 to 600
(3/4 to 24)
Gaskets
Gaskets
9.1
25 to 600
(1 to 24)
150
RF
300
RF
Spiro-metallic, with centering ring (outside)
made of carbon steel ASTM A36 / A36M:
2012 with anticorrosive coating, flexible
graphite filling (asbestos-free), winding
and inner ring Stainless Steel type 304,
ASME B16.20 for ASME B16.5 flanges.
Spiro-metallic, with centering ring (outside)
of carbon steel ASTM A36 / A36M: 2012
with anticorrosive coating, flexible graphite
filling (asbestos-free), winding and inner
ring of 304 Stainless Steel, ASME B16.20
for flanges ASME B16.5.
Bolts
Studs
ASTM A193 Gr. B8 Class 2, threads ASME
B1.1 class 2A.
Nuts
ASTM A194 Gr. 8, threads ASME B1.1 class 2A
Miscellaneous
Eight Figure
(integral)
Eight Figure (blind
joint and spacer
separated)
11.1
11.1
“Y” Type Filter
12.1
“T” Type Filter
20 to 300
(3/4 to 12)
350 to 600
(14 to 24)
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
Branch Connections
150
RF
ASTM A240 Gr. 304, ASME B 16.48
150
RF
ASTM A240 Gr. 304, ASME B 16.48
3000
Welding
Box
ASTM A182 Gr. F304, ends ASME B16.11
Schedule same as
the pipe
Weldable
ASTM A351 Gr. CF8, seamless, weldable ends
Graph T-A01T3 Branch Connections
Notes:
1.1
1.2
1.3
2.1
2.2
3.1
For these services, this Pipeline Materials Specification, applies only under the express request of Pemex in the
Project or by specification of the Technologist or Licensor.
For the Service operating limits and Pressure and Temperature Limits, according to the Range of the Flange Class
(ASME B16.5) see PMS index. However, it may be limited for certain components allowed by this specification.
Refer to pressure and temperature restrictions recommended by the manufacturer.
The sacrificial thickness for permissible corrosion effects, which can be tolerated during the life of these parts, is
included in the wall thickness assigned by this specification to the pipe, fittings and fittings.
At least DN 20 (NPS ¾) is allowed in pipes
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress
analysis.
b. For pipes installed in pipe racks (raised structures) and above ground (on sleepers) the minimum acceptable
length of the pipe is 12 m.
Threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where cap plugs are
installed.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T4 Hoja 3 de 5
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 65 of 214
“Dos Bocas New Refinery, Tabasco”
a. In the Swages, the end of greater diameter is restricted to DN 100 (NPS 4) and the ID must be equal to that of the
pipe to be welded. In the reduced part, the thickness or ID must be equal to the diameter of the pipe of this specification
b. Threaded end sockets for use in pressure taps / nozzles (pressure transmitters and gauges) and threaded joints
must be sealed with welding..
4.1 The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
4.2 Cap for purge terminal ends and vents.
a. Street elbow for use in threaded connections for pump and compressor bodies.
4.5 b. Solid bar plug caps are allowed in unused openings of DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate holder flanges,
sealed with welding after installation.
It is prohibited the use of pipe connections field fabricated, fittings such as wedge plugs or "fish mouth" and flat caps. All
5.1
branches must be built with factory manufactured accessories.
5.3 Eccentric reduction with flat face up for pump suction should be used (do not use concentric reduction).
a. Welding of the reinforced connectors to the head must be fully penetrated according to ASME code B31.3.
6.1 b. In integrally reinforced connectors, the head diameter and branch diameter should be specified. The diameter indicated
in the specification is the Branch.
The use of the integrally reinforced Threaded Outlet connector is limited for purges and vents that must be removed after
6.2 the hydrostatic or pneumatic test. Once the test is finished, they must be sealed with a solid bar plug and sealed with
welding. Purges and vents that are required during startup, operation or maintenance must be Nipple Outlet or Nipple
pipette. .
In the integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, welding box
6.3
welds must be inspected, according to the percentage indicated in the pipe specification and pipe material index.
7.1 Welding box flanges must correspond to the pipeline Schedule.
7.2 Weld neck flanges must have the same pipeline Schedule to which they are to be joined.
The orifice plate holder flanges and pipe to be joined must have the same bore and thickness. Before welding, the flange
7.3 must be aligned to the pipe and there should be no steps. After welding, the inner Weld must be ground and
polished,(mirror finish) there should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar plugs)
must be sealed with welding.
For long neck flanges for thermowell nozzles, the inner diameter must be specified to match the outer diameter of the
7.4
thermowell and ensure its insertion, Class 300 is the minimum allowed.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate, attached to the body and with impact letter on the valve
8.1
body: identification number, type of bonnet gasket and packing box packing.
d. All valve bolts and nuts must be of the proper specification to the valve body material.
e. For all the valves the handwheels must be solid, hollow handwheels are not allowed.
8.3 For DN 50 (NPS 2) gate valves with flanged ends, the flanges and body must be in one piece (not welded), they are only
allowed in equipment nozzles for instrument sockets such as magnetic and optical level indicators, level transmitters. .
Check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of fluids to protect
8.4
upstream installations.
8.6 It is forbidden to use ear valves or two-partitions disc types installed between flanges.
The valves must be installed with the stem in a horizontal position, so that in case of falling of the gate / disc does not
8.13
disable the safety valve or the vent head.
In the gate they must be supplied with a pressure equalizing orifice 3 mm (1/8 in.) In diameter of the fluid containment
8.19 side and indicate on the valve body with an arrow the side of higher pressure. The packing of the stuffing box must be
graphite for cryogenic and fire-resistant service..
Butterfly valves are for insulating large inventory containers. When they are extended bonnet, this must be manufactured
8.20
in one piece.
8.21 The packing of the packing box must be graphite for cryogenic and fire-resistant service.
9.1 For use on long neck flanges and orifice plate holder flanges.
The suction and discharge of pumps, inlet and outlet lines of heat exchangers and compressors, in battery limits, direct
11.1 fire heaters, filters that use filter elements of cartridges and all that equipment that are required to insulate by frequent
maintenance, must count with definitive reversible figures
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected.
12.1b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, additional eight figures must be included in the valves to ensure
their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe
3.2
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T4 Hoja 4 de 5
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
HEAD DIAMETERS
Particular Technical Specification
Project:
DM
(mm)
20
25
40
50
80
100
150
NPS
(in)
3/4
1
1 1/2
2
3
4
6
200
250
300
350
400
450
500
600
8
10
12
4
16
18
20
24
NPS
(in)
DM
(mm)
Rev. 0
Sheet 66 of 214
“Dos Bocas New Refinery, Tabasco”
TC - Wel di ng Box "T"
TC
TRC= Wel di ng Box Reduced "T"
TC
TRC
T = Stra i ght "T" wi th bevel ed ends
TC
TR = Reduced "T wi th bevel ed ends . Stra i ght "T" + Reduction or, Reduced "T" + Reduction.
TC
TRC = Stra i ght "T" + Concenytri c Reduction
ABN
T W = Wel dol et
T
ABN = Connector Integra l l y Rei nforced "Ni pol et" or "Ni ppl e Pi pete"+ va l ve a s a n
T option to the "Ni pol et" or, "Ni ppl e Pi pete", Sockol et + Ni ppl e
*
**
* Al l bra nches mus t be bui l t wi th fa ctory ma nufa ctured a cces s ori es
** Thi s s peci fi ca tion prohi bi ts ma ki ng di rect i ns erts or wi th rei nforcement pl a tes ,
T
T
OR
TR
T
connections (Stra i ght T, Reduced T, Stra i ght T + Reductions ) or, ful l y rei nforced
T connectors (Wel dol et, Ni pol et or Ni ppl e Pi pette) s houl d i nva ri a bl y be us ed.
T
T
TRC
T
T
W
or
1/16" Ga p
Option
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
10
12
14
16
18
20
24
100 150 200 250 300 350 400 450 500 600
BRANCH DIAMETERS
GRAPH T-A01T3 - BRANCH CONNNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T4 Hoja 5 de 5
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Allowable Corrosion:
0 mm (0 in)
See Note 1.2
Component
Sheet 67 of 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
Service: Hydrocarbon +
water
Notes
Rev. 0
T-A01T4
Pressure and Temperature Limits
See Note 1.1
Material: Ni-Cu Alloy
Efforts Relief; N.A.
Diameter
DN (NPS)
Valve Internals
Trim UNS N04400
Thickness (in)
Ends
or Minimum
Schedule / Class
RT
20%
NDT
Additional
See Note 6.2
(Class 150)
RF
Welding Box welding in DN 50 (NPS 2) and
smaller. Butt welds DN 80 (NPS 3) and
greater.
Description / Material
Pipe
2.1
Pipe
2.3
20 to 50
(3/4 to 2)
80 to 200
(3 to 8)
40S
Flat
10S
Flat
ASTM B165alloy UNS N04400, ASME B36.19M
Nipples
20 to 50
(3/4 to 2)
Nipples (in line)
Connections
Solid Bar Plug
Cap Plug
4.2
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
Elbow 90 ° long
radius
45 ° Elbow
Straight
Reduction“ T”
20 to 200
5.1
Conc. Reduction
(3/4 to 8)
Eccentric
Reduction
Cap Plug
Integrally Reinforced Connections
20 to 50
Nipple Outlet
6.1
(3/4 to 2)
80 to 200
Butt Weld Outlet
6.1
(3 to 8)
Flanges
20 to 200
Welding Neck
7.2
(3/4 to 8)
Flange
20 to 200
Blind Flanges
(3/4 to 8)
25 to 50
Long Neck
7.4
(1 to 2)
Flanges
40S
For welding
/ thread +
welding
Screwed
3000
Schedule same as
the pipe
3000
10S
Screwed
Flat
Beveled Flat
Flat
150
RF
150
RF
300
RF
800
Beveled
ends
ASTM B165 alloy UNS N04400, ASME
B36.19M
ASTM B564 alloy UNS N04400, ASME
B16.11, thread ASME B1.20.1
ASTM B564 alloy UNS N04400, ASME
B16.11, threads female-male ASME
B1.20.1
ASTM B366 WPNC (UNS N04400), Class S,
ASME B16.9
ASTM B564 alloy UNS N04400, ASME B31.3
(302.2, 304.3, 326, 328.5.4)
ASTM B564 alloy UNS N04400, MSS SP-97
ASTM B564 alloy UNS N04400, ASME B16.5,
Schedule and bore same as the pipe
ASTM B564 alloy UNS N04400, ASME B16.5.
ASTM B564 alloy UNS N04400, ASME B16.5.
Valves
Gate
Valve
8.1
20 to 50
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM B564 alloy UNS N04400, ISO 15761, solid
gate, weldable end, external screw and yoke,
screwed bonnet, double disc, fixed seats,
operated by handwheel. .
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T4 Hoja 2 de 5
_1
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Gate
Valve
8.1
Globe valves
8.1
Globe valves
8.1
Check Valves
8.1
8.4
Check Valves
8.1
8.4
Butterfly Valves
8.1,
8.6
8.20
8.21
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 68 of 214
“Dos Bocas New Refinery, Tabasco”
80 to 200
(3 to 8)
150
RF
20 to 50
(3/4 to 2)
800
Beveled
ends
80 to 250
(3 to 10)
150
RF
20 to 50
(3/4 to 2)
80 to 200
(3 to 8)
800
Beveled
ends
150
RF
150
RF
20 to 200
(3/4 to 8)
150
RF
25 to 50
(1 to 2)
300
RF
80 to 200
(3 to 8)
ASTM A494 Gr. M35-2 (UNS N24020), ASME
B16.34, external screw and yoke, flanged
bonnet, double disc, fixed seats, operated by
handwheel, wedge to be specified by Pemex
in the Project
ASTM B564 alloy UNS N04400, ISO 15761,
external screw and yoke, screwed bonnet,
free disk, fixed seat, operated by handwheel.
ASTM A494 Gr. M35-2 (UNS N24020),
ASME B16.34, external screw and yoke,
flanged bonnet, free disc, fixed seat,
operated by handwheel.
ASTM B564 alloy UNS N04400, ISO 15761,
cover bolted, fixed seat.
ASTM A494 Gr. M35-2 (UNS N24020), API
STD 594 Type B flanged cover, fixed seat,
swing type and stop integrated to the body
that limits the opening of the disc.
ASTM A494 Gr. M35-2 (UNS N24020), triple
eccentricity, solid one-piece seal ring,
integral body seat, metal-metal seal, API 609
category B design, ISO 10497 fireproof.
Flanged body. The design must comply with
8.2.1 and 8.10 of ET-204-PEMEX-2012.
Gaskets
Gaskets
9.1
Spiro-metallic, with centering ring (exterior) made
of carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, graphite filling or equivalent,
winding tape and inner ring of ASTM B127 alloy
UNS N04400, ASME B16.20 for ASME flanges
B16.5, bore equal to the inside diameter of the
pipe.
Bolts
Studs
Nuts
Branch Connections
ASTM F468M alloy 400 (UNS N04400), threads
ASME B1.1 class 2A
ASTM F468M alloy 400 (UNS N04400),
hexagonal, threads ASME B1.1 class 2A
Graph T-A01T4 Branch Connections
Notes:
1.1
1.2
2.1
2.3
4.2
5.1
6.1
6.2
7.2
7.4
For the Service operating limits and Pressure and Temperature Limits, according to the Flange Class Range (ASME
B16.5) see PMS index. However, it may be limited for certain components allowed by this specification. Refer to
pressure and temperature restrictions recommended by the manufacturer.
The sacrificial thickness is included in the wall thickness that is assigned to the pipe, connections and fittings for this
specification, for the purposes of the permissible corrosion that can be tolerated during the life of these parts..
In pipes, DN 20 (NPS 3/4) is the minimum allowed.
All pipes with seam, this should be longitudinal straight and 100 percent radiographed.
Cap Plugs for ends of purges and vents.
It is forbidden to use pipe connections field fabricated, fittings such as wedges or "fish mouths" and flat caps. All
branches must be built with factory manufactured accessories.
a. Welding of reinforced connectors to the head must be fully penetrated in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated
in the specification is the branch.
In the fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, welding box
welds must be inspected, according to the percentage indicated in the pipe specification and index of pipe
materials.
Weld neck flanges must have the same schedule to their pipe which they are to be joined.
In long neck flanges for thermowell nozzles, the inner diameter must be specified to match the outer diameter of the
thermowell and ensure insertion, Class 300 is the minimum allowed.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T4 Hoja 2 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 69 de 214
“Dos Bocas New Refinery, Tabasco”
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with ASME B16.5 dimensions.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate, attached to the body and with impact
8.1
letter on the valve body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (bolts, nuts, etc.) must be of the proper specification to the valve body material.
e. Handwheels for all valves must be solid, hollow handwheels are not allowed.
8.4
8.6
8.20
HEAD DIAMETERS
8.21
9.1
Check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of
fluids to protect upstream installations.
It is forbidden to use ear valves or Split disc type installed between flanges.
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must
be manufactured in one piece.
The packing of the packing box must be graphite for cryogenic and fire-resistant service.
For use on long neck flanges and orifice plate holder flanges.
DM
(mm)
20
25
40
50
80
100
150
NPS
(in)
3/4
1
1 1/2
2
3
4
6
200
250
300
350
400
8
10
12
4
16
NPS
(in)
DM
(mm)
ABN = Connector Integra l l y Rei nforced "Ni pol et" or "Ni ppl e Pi pete",
wi th bevel l ed ends + va l ve
T
TRC= Wel di ng Box Reduced "T"
T
TR
T = Stra i ght "T" wi th bevel ed ends
T
TR = Reduced "T wi th bevel ed ends or, Stra i ght "T" + Reduction
T
ABN
*
T+RC = Stra i ght "T" + Concentri c Reduction
T W = Wel dol et
*
T
T
Thi s s peci fi ca tion prohi bi ts ma ki ng di rect i ns erts or
wi th rei nforcement pl a tes
T
W
T
TR
T
T
or
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
T+RC
10
12
T
14
16
100 150 200 250 300 350 400
BRANCH DIAMETERS
GRAPH T-A01T4 - BRANCH CONNNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T8 Hoja 1 de 3
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Allowable Corrosion:
0 mm (0,00 in)
Components
Sheet 70 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
Service: Potable Water
(underground)
Note 1.1 Applies
Notes
Rev. 0
T-A01T8
Pressure and Temperature Limits
1 177 kPa @ 41°C
See Note 1.2
Valve
Material: Polypropylene
(Ramdom Copolymer) Thermal
Internals
Treatment and Effort Relief: N.A.
Trim 8
Diameter
DN (NPS)
Minimum Thickness
(mm) / Class
Ends
RT
N.A
NDT
Additional
N.A
Class 150
FF Face
Observations: to join by the thermo fusion
process
Description
Piping
5.6 (j & k)
5.6 (j & k
5.6 (j & k
Pipe
5.6 (j & k
5.6 (j & k
5.6 (j & k
Nipples
Nipple
(in line)
Connections
Elbow 90°
Elbow 45°
Straight “T”
Reduced “T”
Couple reduced
Male Connector
Female
Connector
20
(3/4)
25
(1)
40
(1 1/2)
50
(2)
80
(3)
100
(4)
20 to 50
(3/4 to 2)
5.6 (a)
5.6 (a)
20 to 100
(3/4 to 4)
20 to 80
(3/4 to 3)
Cap Plug
5.6 (a)
20 to 80
(3/4 to 3)
20 to 50
(3/4 to 2)
Saddle
5.6 (b)
20 to 100
(3/4 to 1)
Valves
Globe Valve
Male Type
5.6 (a)
5.6 (h)
20 to 50
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
3.5
Flat
PP, ASTM D 4101, ASTM F 2389.
4.4
Flat
PP, ASTM D 4101, ASTM F 2389.
6.9
Flat
PP, ASTM D 4101, ASTM F 2389.
8.3
Flat
PP, ASTM D 4101, ASTM F 2389.
12.3
Flat
PP, ASTM D 4101, ASTM F 2389.
15.1
Flat
PP, ASTM D 4101, ASTM F 2389.
Schedule same as
the pipe
Ends as
required
per design
PP, ASTM D 4101, ASTM F 2389.
Schedule same as
the pipe
Insert
type
(box)
PP, ASTM D 4101, ASTM F 2389.
Schedule same as
the pipe
Schedule same as
the pipe
Insert type
(box) +
NPT Thread
Insert type
(box) +
NPT Thread
Schedule same as
the pipe
Schedule same as
the pipe
Insert
type
(box)
Inserted
in pipe
800
Screwed
PP, ASTM D 4101, ASTM F 2389.
PP, ASTM D 4101, ASTM F 2389.
PP, ASTM D 4101, ASTM F 2389.
PP, ASTM D 4101, ASTM F 2389.
ASTM A105, trim 8, external screw and
yoke, bolted bonnet, male type disc,
floating integrated seat, operated by
handwheel. ISO 15761.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A01T8 Hoja 1 de 3
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Particular Technical Specification
Project:
Check
Valve
Gate
Valve
5.6 (h)
Globe Valve
5.6 (h)
Check
Valve
Gate
Valve
5.6 (h)
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 71 de 214
“Dos Bocas New Refinery, Tabasco”
20 to 50
(3/4 to 2)
800
Screwed
20 to 50
(3/4 to 2)
800
Screwed
80 to 100
(3 to 4)
150
FF
80 to 100
(3 to 4)
150
FF
150
FF
80 to 100
(3 to 4)
ASTM A105, trim 8, ball or piston type for
working in horizontal / vertical position, flanged
cover, ISO 15761.
ASTM A105, trim 8, OS&Y, solid gate, fixed
handwheel, rising stem, flanged bonnet, solid
gate, ISO 15761..
Body ASTM A216 Gr. WCB, ASME B16.34, Trim
1 conforming to API STD 623, external thread
and yoke, screwed bonnet, male disc, seat
replaceable, operated by handwheel.
ASTM A216 Gr. WCB, API STD 594 Type B,
Trim1 according to ISO 10434, flanged cover,
swing type and stop integrated to the body that
limits the opening of the disc.
ASTM A216 Gr. WCB, ASME B16.34, Trim 1
conforming to ISO 10434, OS&Y, fixed
handwheel, rising stem, flanged bonnet.
Gaskets
20 to 100
(3/4 to 4)
Gaskets
150
RF
Spiro-metallic, with centering ring (external) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of 304
Stainless Steel, ASME B16.20 for flanges ASME
B16.5.
Bolts
5.6
(c y d)
5.6 (c)
Studs
Nuts
Branch
Connections
Miscellaneous
5.6 (g)
ASTM A193 Gr. B7, threads ASME B1.1 class
2A.
ASTM A194 Gr. 2H, threads ASME B1.1 class
2A.
See Graph T-A01T8 Branch Connections
Notes:
1.1
1.2
5.6
For this service, this Specification of Materials for Pipeline, applies only under the express request of Pemex in the
Project or by specification of the Technologist or Licensor. This Specification should be worked with paragraph
8.1.1.8 of this TS..
For the Service Operating Limits Conditions and Pressure and Temperature Limits, it may be limited for certain
components allowed by this specification. Refer to pressure and temperature restrictions recommended by the
manufacturer.
a. Prohibited the use of pipe connections field fabricated fittings All branches must be constructed with factory
manufactured fittings.
b. In all the branches with exit to aerial pipe it must be reinforced with concrete in the underground part.
c. The tightening torque of the flange hardware (studs and nuts) must be based on the manufacturer's data.
d. The hardware (studs and bolts) characteristics must be the same as those used for ASME PN 20 (Class 150) FF
flanges, except that the length of the stud must be 2 in or larger.
e. In the requisitions of pipe, nipple, flange, connection and valve for this class, the service, pressure and design
temperature thereof must be indicated.
f. The dimensions of the flanges must be such that they allow coupling to ASME B16.5 flanges.
g. The table for header-branch connection indicates the one recommended by design, but it is not limited.
h. Underground valves must be installed with a signpost.
i. Where it is required to carry out connections between flanges F.F. and R.F. an adjustment ring must be included
for tie between flanges. The ring will be made of ASTM A515 Gr. 60 carbon steel plate.
j. The polypropylene system must be installed based on ASTM D 2774.
k. The wall thickness for internal positive pressure must be determined based on the hydrostatic stress of the
material supplied by the manufacturer and must be backed up with a calculation memory based on ASME code
B31.3, A304.1.2, straight pipe under internal pressure.
l. If required by the user, this pipe specification can be used for offshore industrial installations in underground
application and under the operating conditions established by this specification.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A02T8 Hoja 1 de 3
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Piping Systems in Industrial Plants Design and Material Specifications
HEAD DIAMETERS
Particular Technical Specification
Project:
DM
(mm)
20
25
40
50
80
100
NPS
(in)
3/4
1
1 1/2
2
3
4
NPS
(in)
DM
(mm)
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 72 de 214
“Dos Bocas New Refinery, Tabasco”
S = Sa ddl e
T
T = Stra i ght "T" wi th box type ends
T
TR = Reduced "T wi th box type end
T
TR
T
T
SI
T
3/4
1
1 1/2
2
3
4
20
25
40
50
80
100
BRANCH DIAMETERS
GRAPH T-A01T8 - BRANCH CONNNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A02T8 Hoja 1 de 3
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ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Sheet 73 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
Piping Material Specification
T-A02T1
Pressure and Temperature Limits
See Note 1.1
Service: Anhydrous
ammonia, Aniline.
Allowable Corrosion:
1.6 mm (0.0625 in)
See Note 1.2
Component
Rev. 0
See Notes
Material: CS
Thermal Treatment and
Efforts Relief
N.A.
Minimum
Diameter
Thickness (in) or
DN (NPS)
Schedule / Class
RT
50 %
Valve
Internals
Trim 5
NDT
50%
Class 150
RF Face
Welding box welds in DN 50 (NPS 2) and
smaller; Butt welding DN 80 (NPS 3) and
larger
Ends
Description
Piping
2.1
Pipe
2.2
2.3
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
650 to 900
(26 to 36)
80
Flat
Standard
Beveled
To be calculated by
Contractor
Beveled
ASTM A106 Gr. B
ASTM A672 Gr. C60 (ASTM Plate A516 Gr.
60), Class 12, Straight longitudinal with
seam, EFW, Ex = 1.0
Nipples
Nipple (in line)
3.1
20 to 50
(3/4 to 2)
Socket conc..
Socket exc.
3.2
20 to 50
Connections
90 ° Elbow
45 ° Elbow
Straight “T”
Reduced “T”
Coupling
Reduction
Coupling
4.1
Cap Plug
4.2
Solid Bar Plug
4.5
Street Elbow
4.5
Elbow 90 ° long
radius
45 ° Elbow
Straight “T”
Reduced “T”
Concentric
Reducer
Reducer
Eccentric.
Cap Plug
5.1
Flat / Threaded
ASTM A106 Gr. B
Flat / Flat
80
(3/4 to 2)
Schedule same as
the pipe
20 to 50
(3/4 to 2)
3000
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
3000
3000
Schedule same
as the pipe
Threaded /
Beveled
ASTM A234 Gr. WPB, MSS SP-95
Flat / Beveled
Welding Box
ASTM A105, ASME B16.11
Threaded
ASTM A105, ASME B16.11, Thread ASME B1.20.1
Threaded
ASTM A105, ASME B16.11, Thread ASME B1.20.1
Threaded
ASTM A105, ASME B16.11, Threads (female-male
ASME B1.20.1)
Beveled
ASTM A234 Gr. WPB-S, ASME B16.9
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A02T8 Hoja 1 de 3
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Elbow 90 ° long
radius
45 ° Elbow
Straight “T”
Reduced “T”
Concentric
Reducer
Eccentric
Reducer
Cap Plug
5.1
2.3
7.3
7.4
Sheet 74 de 214
“Dos Bocas New Refinery, Tabasco”
650 to 900
(26 to 36)
Integrally Reinforced Connections
20 to 50
6.1
Threaded Outlet
6.2
(3/4 to 2)
20 to 50
6.1
Socket Weld
6.3
(3/4 to 2)
Outlet
6.1
20 to 50
Lateral Outlet
6.3
(3/4 to 2)
80 to 350
Butt Weld Outlet
6.1
(3 to 14)
20 to 50
6.1
Nipple Outlet o
6.3
(3/4 to 2)
Nipple pipet
Flanges
Welding box
20 to 50
7.1
flanges
(3/4 to 2)
Welding neck
80 to 600
7.2
flanges
(3 to 24)
Welding neck
650 to 750
7.2
flanges
(26 to 36)
Blind flanges
20 to 600
(3/4 to 24)
Blind flanges
650 to 900
(26 to 36)
Orifice plate
holder flanges
Long neck
flange
Valves
Rev. 0
50 to 600
(2 to 24)
25 to 50
(1 to 2)
Schedule same
as the pipe
3000
3000
3000
Schedule same as the
pipe
Threaded
ASTM A234 Gr. WPBW, with seam straight
longitudinal. Ex=1.0, ASME B16.9
ASTM A105, MSS SP-97
Welding Box
ASTM A105, MSS SP-97
Welding Box
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
Beveled
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
3000
Flat
150
RF
150
RF
150
RF
150
RF
ASTM A105 ASME B16.5.
150
RF
300
RF
ASTM A105 ASME B16.47 Series TO (MSSSP44).
ASTM A105, ASME B16.36, welding neck,
Schedule and bore same as pipe..
300
RF
20 to 50
(3/4 to 2)
800
80 to 600
(3 to 24)
150
Gate
Valves
8.1
Gate
Valves
8.1
8.3
Gate
Valves
8.1
650 to 900
(26 to 36)
150
Globe Valves
8.1
20 to 50
(3/4 to 2)
800
Globe Valves
8.1
80 to 300
(3 to 12)
Check
Valves
8.1
8.4
20 to 50
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Beveled
150
800
Welding Box
RF
RF
Welding Box
RF
Welding Box
ASTM A105 ASME B16.5,
ASTM A105 ASME B16.5, Schedule and bore
same as pipe.
ASTM A105 ASME B16.47TO(MSS-SP44),
Schedule and bore same as pipe..
ASTM A105, ASME B16.5.
ASTM A105, Trim 5, OS&Y, ISO 15761,
fixed handwheel, ascending stem, flanged
bonnet, solid gate.
ASTM A216 Gr. WCB, Trim 5, OS&Y, ISO
10434, Fixed handwheel, rising stem,
flanged bonnet, solid gate.
ASTM A216 Gr. WCB, Trim 5 (see ISO
10434), OS&Y, ASME B16.34, ASME
B16.47A, fixed handwheel, ascending
stem, flanged bonnet, flexible solid gate.
ASTM A105, Trim 5, OS&Y, ISO 15761,
handwheel, and rising stem, screwed
bonnet.
ASTM A216 Gr. WCB, Trim 5 conforming
to API STD 623, OS&Y, ASME B16.34,
handwheel and rising stem, flanged
bonnet..
ASTM A105, Trim 5, ISO 15761, ball or
piston type for working in horizontal /
vertical position, bolted cover.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A02T8 Hoja 1 de 3
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
8.1
8.4
8.6
Check
Valves
Butterfly Valves
8.1, 8.6
8.20
8.21
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 75 de 214
“Dos Bocas New Refinery, Tabasco”
80 to 600
(3 to 24)
80 to 600
(3 to 24)
150
150
RF
ASTM A216 Gr. WCB, Trim 5, API STD 594 type
B, flanged cover, swing type and stop integrated
to the body that limits the opening of the disc.
RF
ASTM A216 Gr. WCB, triple eccentricity, solid
one-piece seal ring, integral body seat, metalmetal seal, API 609 category B design, ISO
10497 fireproof. Flanged body. The design must
comply with 8.2.1 and 8.10 of the ET-204PEMEX-2019.
RF
Spiro-metallic, with carbon steel (external)
centering ring ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring type 304
Stainless Steel, ASME B16.20. ASME B16.5. for
flanges.
Gaskets
20 to 600
(3/4 to 24)
Gaskets
650 to 900
(26 to 36)
Gaskets
Gaskets
9.1
25 to 600
(1 to 24)
150
150
RF
300
For orifice plate
holder flange
RF
Bolts
Studs
Spiro-metallic, with centering ring (external) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of type
304 Stainless Steel, ASME B16.20, for flanges
ASME B16.47TO (MSS-SP44), bore equal to the
inside diameter of the pipeline.
Spiro-metallic, with centering ring (external) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of type
304 Stainless Steel, ASME B16.20, ASME B16.5
for flanges.
ASTM A193 Gr. B7, threads ASME B1.1
class 2A.
ASTM A194 Gr. 2H, threads ASME B1.1
class 2B.
Nuts
Miscellaneous
Figures eight
(integral)
Figures eight
(blind flange and
spacer separated)
“T” type filters
12.1
“Y” type filters
12.1
20 to 300
(3/4 to 12)
150
RF
350 to 900
(14 to 36)
150
RF
80 to 600
(3 to 24)
20 to 50
(3/4 to 2)
Branch Connections
Schedule same as
the pipe
3000
Weldable
Welding Box
ASTM A516 Gr. 70, ASME B 16.48
ASTM A516 Gr. 70, ASME B16.48
ASTM A234 Gr. WPB, seamless, weldable ends
ASTM A105, ends as per ASME B16.11
Graph T-A02T1 Branch Connections
Notes:
1.1
1.2
2.1
2.2
The pressure and temperature limits of this specification are based on the corresponding flange class range, indicated
in ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure and
temperature restrictions should be consulted to the manufacturer..
The slaughter thickness is included in the wall thickness assigned to the pipe, connections and fittings for this
specification, for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
In pipes, DN 20 (NPS 3/4) is the minimum diameter allowed.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress
analysis.
b. For pipes installed in pipe runners (raised frames) and Cement Stand the minimum acceptable length of the pipe is
12 m.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A02T8 Hoja 1 de 3
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
2.3
3.1
3.2
4.1
4.2
4.5
5.1
6.1
6.2
6.3
7.1
7.2
7.3
7.4
8.1
8.3
8.4
8.6
8.20
8.21
9.1
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 76 de 214
“Dos Bocas New Refinery, Tabasco”
All seam pipes and connections, which are indicated in this specification, the seam must be longitudinal straight and
radiographic 100 percent.
The threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where threaded plugs
are installed..
a. In the sockets the end of larger diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS 2);
the Schedule must be equal to that of the pipe to be welded.
b. The threaded end sockets for use of pressure taps / nozzles (pressure transmitters and pressure gauges), the
threaded joints must be sealed with welding..
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap plugs for ends of purges and vents..
a. Street elbow for use in threaded connections to pump and compressor bodies.
b. Solid bar caps plugs are only allowed in openings without the use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice
plate holder flanges, seal with welding after installation.
It is forbidden to use pipe connections field fabricated and fittings such as wedges or "fish mouths" and flat caps. All
the Branches must be built with factory manufactured accessories.
a. Welding of reinforced connectors to the head must be fully penetrated in accordance with ASME code B31.3.
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the
specification is the branch.
The fully reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the
hydrostatic or pneumatic test. Once the test is finished, they must be sealed with a solid bar plug and the threaded
joint must be sealed with welding. Purges and vents that are required during startup, operation or maintenance must
be Nipple Outlet or Nipple pipette.
For fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, weld box welds
must be inspected, according to the percentage indicated in the pipe specification..
Welding box flanges must correspond to the pipeline Schedule.
Weld neck flanges must have the same Schedule to the pipeline to which they will be attached.
The orifice plate holder flange and pipe to which they are to be attached must be of the same bore and thickness.
Before welding, the flange must be aligned to the tube and there should be no steps. After welding you must grind
and polish the inner weld (mirror finish), there should be no restrictions, bumps or sinking. All threaded joints (nipples
and solid bar plugs) must be sealed with welding.
Long neck flanges for thermowell nozzles. the inner diameter must be specified to relate it to the outer diameter of
the thermowell and ensure insertion, the minimum allowed Class is 300.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5, and the
larger ones with ASME B16.47 Series A
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate, attached to the body and with impact letter on the
valve body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (studs and nuts) must be of the appropriate specification and compatible with the material of
the valve body.
e. Handwheels of all valves must be solid, hollow handwheels are not allowed.
DN 50 gate valves (NPS 2) with flanged ends, flanges and body must be in one piece (not welded), they are only
allowed in equipment nozzles for instrument sockets such as magnetic and optical level indicators, level transmitters.
Check valves should be installed horizontally with the lid on top, to ensure the closure of the gate and prevent the
backflow of fluids.
The use of operated or split-disk type valves installed between flanges is prohibited.
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must be
manufactured in one piece.
The packing of the stuffing box must be graphite for cryogenic and fire-resistant service.
For use on long neck flanges and orifice plate holder flanges.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment
to be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, figures eight must be included, additional to the blocking
valves, to ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A02T8 Hoja 1 de 3
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
HEAD DIAMETERS
Particular Technical Specification
Project:
DM
NPS
(mm)
(in)
20
3/4
25
1
40
1 1/2
50
2
80
3
100
4
150
6
200
250
300
350
400
450
500
600
650
700
750
800
900
8
10
12
14
16
18
20
24
26
28
30
32
36
NPS
(in)
DM
(mm)
Rev. 0
Sheet 77 de 214
“Dos Bocas New Refinery, Tabasco”
TC - Wel di ng Box "T"
TC
TRC= Wel di ng Box Reduced "T"
TC
TRC
T = Stra i ght "T" wi th bevel ed ends
TC
TR = Reduced "T" wi th bevel ed ends . Stra i ght "T" + Reducti on or, Reduced "T" + Reducti on.
TC
ABN
T
TRC = Stra i ght "T" + Concentri c Reducti on
W = Wel dol et
T
*
T
**
ABN = Connector Integra l l y Rei nforced "Ni pol et" or "Ni ppl e Pi pette"+ va l ve a s a n opti on to
the "Ni pol et" or, "Ni ppl e Pi pete", Sockol et + Ni ppl e
* Al l bra nches mus t be bui l t wi th fa ctory ma nufa ctured a cces s ori es
** Thi s s peci fi ca ti on prohi bi ts ma ki ng di rect i ns erts or wi th
T
T
OR
rei nforcement pl a tes , connecti ons s houl d i nva ri a bl y be us ed
(Stra i ght "T", Reduced "T", Stra i ght "T + Reducers ) or, i ntegra l l y
rei nforced connectors (Wel dol et, Ni ppol et or Ni ppl e Pi pette).
T
W
T
T
T
1/16" Ga p
TR
T
T
or
Ni ppol et Opti on
T
T
TRC
T
T
T
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
10
12
14
16
18
20
24
26
28
30
32
36
100 150 200 250 300 350 400 450 500 600 650 700 750 800 900
BRANCH DIAMETERS
GRAPH T-A02T1 - BRANCH CONNNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A02T8 Hoja 1 de 3
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Industrial
Installations
Service: Firefighting
water (underground).
With approval (UL / FM)
Note 1.25 Applies
Allowable Corrosion:
0 mm (0,00 in)
Rev. 0
Sheet 78 de 214
“Dos Bocas New Refinery, Tabasco”
Piping Material Specification
T-A02T8
Pressure and Temperature Limits:
910 kPa@ 49°C
See Note 1.7, 190
Material
PEAD
Thermal Treatment and Efforts Relief
N.A.
See Notes 1.7, 1.8, 187, 188, 189, 190
RT
N.A.
Valve
Internals
NDT
Additional
N.A.
Class 200 FM
FF Face
Observations: To join by the
electrofusion or thermo-fusion
process.
Notes
Diameter
DN (NPS)
Minimum Schedule
(RD) / Class
Ends
Description
2.5,
2.12,
2.13
100 to 600
(4 to24)
DR 7
FM Class 200
Flat
PEAD PE4710 / PE3608, ASTM D3350
CL 445474C / 345464C, FM-1613 Approval.
ASTM D3035 / ASTM F714. Controlled
External Diameter.
Connections See Note 172, 198
90 ° elbow
3.9, 3.10
45 ° Elbow
Reducer or
fabricated tube
plus reducing
saddle
100 to 600
Conc. Reducer
(4 to 24)
DR 7
FM Class 200
Flat
PEAD PE 4710 / PE3608, ASTM D3350
CL 445474C / 345464C, FM-1613 Approval.
ASTM D3035 / ASTM F714.
DR 7/ CED STD
PEAD –
Flat / CS
– Beveled
for welding
Component
Piping
Pipe
4.5
Flange adapter
Coupling
115
Plug
Transition
Nipple
(ground –
air)
3.6
80 to 600
(3 to 24)
PEAD PE 4710 / PE3608, ASTM D3350
CL 445474C / 345464C. FM-1613
Approval. ASTM D3035 / ASTM F714,
CS pipe ASTM A53 Gr. B
Flanges
Stub-end
Lap joint Flange
4.8
4.3
4.4, 4.9
80 to 600
(3 to 24)
DR 7
F.F.
100 to 600
(4 to 24)
150
FF
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
PEAD molded PE 4710 / PE3608, ASTM D3350
CL 445474C / 345464C. FM-1613 Approval.
ASTM D3035 / ASTM F714. The steel support
ring (backrest) must be adjusted to the
outside diameter of the stub-end,
manufactured with dimensions ASME
B16.5.
ASTM A105, ASME B16.5
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A02T8 Hoja 1 de 3
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Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 79 de 214
“Dos Bocas New Refinery, Tabasco”
Gaskets
80 to 600
(3 to 24)
Gaskets
150
F.F.
Neoprene 3.2 mm (1/8 in.) Thick, flat
face, Durometer 55 - 75, Shore “A”
Bolts
168
5.2
80 to 600
(3 to 24)
Bolts ASTM A307, Gr. B with heavy
hexagonal nuts ASTM A563
Miscellaneous
Spacers / Centers
Rubber seal
BRANCH TABLE
24” x 16”
18” x 10”
16” x 8”
12” x 4”
12" to 24”
Spacer / Centers made of HDPE
Rubber Seal for pipe in street
underground crossing model AW
T-A02T8 BRANCH TABLE
Notes:
1.7
1.8
1.25
2.12
2.13
2.5
3.9
3.10
3.6
4.8
4.3
4.4
4.9
168
5.2
115
172
187
188
189
190
198
Refer to pressure and temperature restrictions recommended by the manufacturer. Pipe, connections and fittings
must comply with approval (UL / FM).
The personnel that made the connections between pipes and polyethylene connections by means of electrofusion
or thermo-fusion must be trained and validated by the manufacturer and / or authorized representative of the
components.
For this service, this specification of materials for pipeline applies only at the express request of Pemex in the
Project or by specification of the Technologist or Licensor. This specification should be worked with paragraph
8.1.1.8 of this TS.
The joint method for pipe and electro fusion connections must comply with ASTM F 1290 and the thermo-fusion
method must comply with ASTM F 2620..
To ensure water expenditure, in the transition of the HDPE material pipe, the diameter of the HDPE pipe must be
immediately greater than that required by design for a steel pipe, the adjustment of the difference in diameters will
be by means of a reduction installed after the transition reel.
The installation method of the HDPE pipe must be in accordance with ASTM D 2321..
In segmented manufactured connections the manufacturing process must have FM approval..
The equipment and connections / couplers for the electro fusion connections must be from the same
manufacturer. The electrofusion equipment must have traceability and documentation functions, and GPS
traceability for the location of the junction.
The transition of the HDPE-CS pipe must be horizontal and underground, one end will be joined by fusion (HDPE),
another end by butt welding (CS). The criteria established in section 8.2.4 of ET-128-PEMEX-2011 must be met.
The dimensions of the flanges must be such that they allow the coupling of ASME B16.5 flanges.
When the HDPE flange alternative is used, these must be housed in registers for sectioning valves constructed of
concrete and metal or fiberglass cover, with sufficient space to allow maneuvering for the installation and tightening
of the screws, 70 cm of clear clearance between the tangent of the flange and the walls of the register 2 times the
length of the screw between its head and the register to allow entry and exit of the screw and with 30 cm from the
bottom of the flange to the floor , the cover must rest on the walls that must protrude from the floor, in order not to
allow water to enter the register, the dimensions indicated are minimum values.
When HDPE flanges are used in sectioning valves, each valve must be supported within the register so that it
does not transmit effort to the plastic material caused by the weight or the opening and closing of the valve.
The sealing surface of the flange adapters must be provided serrated, with small V-shaped grooves (sawtooth) to
retain the gasket and seal against leaks.
The tightening torque of the flange hardware must be based on the recommendations of the gasket manufacturer.
The length of the screws should be such that the end of the tip is not covered by the nut.
Couplings with integrated wire for electrofusion should be installed in accordance with the manufacturer's
instructions. Limiting the use of these closing joints where "butt" thermo-fusion is not feasible.
Not all manufacturers can supply all components in the indicated size and range
All piping and connections must be manufactured and supplied by a single manufacturer (the same).
HDPE pipes should not be installed in soils contaminated with hydrocarbons in concentrations of 2% or greater.
HDPE pipe and connections must be supplied with long-term protection against UV rays (2-3% black carbon)
The effect of an overpressure on the system should be evaluated for design speeds greater than 5 feet / sec.
All molded or fabricated connections must withstand the total pressure range (FM Class 200). Fiberglass
reinforcements are not accepted on HDPE connections.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A02T8 Hoja 2 de 3
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
HEAD DIAMETERS
Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 80 de 214
“Dos Bocas New Refinery, , Tabasco”
DM
(mm)
100
150
NPS
(in)
4
6
200
250
300
350
400
450
500
550
600
8
10
12
14
16
18
20
22
24
NPS
(in)
DM
(mm)
T
T = Stra i ght "T"
T
TRS = Reduced "T" pi pe fa bri ca ted + Reduci ng s a ddl e
T
TRS
TRS + RC = Reduced "T" + Concentri c Reduction
T
T
TRC+R
T
T
T
TRS+RC
4
6
8
10
12
14
16
18
T
20
T
S
T
22
24
100 150 200 250 300 350 400 450 500 550 600
BRANCH DIAMETERS
GRAPH T-A02T8 - BRANCH CONNNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A03T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Allowable Corrosion:
1.6 mm (0.0625 in)
See Note 1.2
Component
Sheet 81 de 214
“Dos Bocas New Refinery, , Tabasco”
Industrial
Installations
Service: Fuel or sweet
gas, Liquid benzene,
Toluene, Inert gas.
Rev. 0
T-A03T1
Pressure and Temperature Limits
RT
33 %
1172 kpa@ 260°C
See Note 1.1
Material: CS
Thermal Treatment and Efforts Relief
N.A.
Valve
Internals
Trim 5
See
Notes
Diameter
DN (NPS)
Minimum Thickness
(in) or Schedule / Class
Ends
2.1
20 to 50
(3/4 to 2)
80
Flat
80 to 600
(3 to 24)
Standard
Beveled
To be calculated by
Contractor
Beveled
NDT
33 %
Class 150
RF Face
Welding Box for welding in DN 50 (NPS
2) and smaller. Butt welds DN 80 (NPS
3) and larger.
Description
Piping
ASTM A106 Gr. B
Pipe
2.2
2.3
650 to 900
(26 to 36)
ASTM A672 Gr. C60 (Plate ASTM A516
Gr. 60), Class 12, with seams straight
longitudinal, EFW, Ex = 1.0
Nipples
Nipple (in line)
Socket
concentric.
Socket
eccentric.
3.1
3.2
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
80
Schedule same as the
pipe
Flat / Screwed
ASTM A106 Gr. B, ASME B36.10
Flat / Flat
Screwed /
ASTM A234 Gr. WPB, MSS SP-95
Beveled
Flat / Beveled
Connections
90 ° elbow
45 ° Elbow
Straight “T”
4.1
Reduced “T”
20 to 50
(3/4 to 2)
3000
Welding Box
ASTM A105, ASME B16.11
Coupling
Reduced
Coupling
Cap Plug
Solid Bar Plug
Street Elbow
4.2
4.5
4.5
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
3000
Screwed
Screwed
3000
Screwed
ASTM A105, ASME B16.11, thread
ASME B1.20.1
ASTM A105, ASME B16.11, thread
ASME B1.20.1
ASTM A105, ASME B16.11, threads
(female - male ASME B1.20.1)
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A03T1 Hoja 1 de 5
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Welding Neck
Flange
Welding Neck
Flange
7.1
7.2
7.2
Bling Flange
Bling Flange
Orifice Plate
holder flange
Long Neck
Flange
Valves
7.3
7.4
Sheet 82 de 214
“Dos Bocas New Refinery, , Tabasco”
Elbow 90 °
long radius
45 ° Elbow
Straight “T”
Reduced “T”
5.1
80 to 600
Concentric
(3 to 24)
Reducer
Eccentric
Reducer
Cap Plug
Elbow 90 °
long radius
45 ° Elbow
Straight “T”
Reduced “T”
5.1
650 to 900
Concentric
5.2
(26 to36)
Reducer
Eccentric
Reducer
Cap Plug
Integrally Reinforced Connections
6.1
20 to 50
Threaded Outlet
6.2
(3/4 to 2)
6.1
20 to 50
Socket Weld
6.3
(3/4 to 2)
Outlet
6.1
20 to 50
Lateral Outlet
6.3
(3/4 to 2)
80 to 350
Butt Weld Outlet
6.1
(3 to 14)
6.1
20 to 50
Nipple Outlet or
6.3
(3/4 to 2)
Nipple pipette
Flanges
Welding Box
Flanges
Rev. 0
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
650 to 750
(26 to 36)
20 to 600
(3/4 to 24)
650 to 900
(26 to 36)
50 to 600
(2 to 24)
25 to 50
(1 to 2)
Schedule same as the
pipe
Beveled
ASTM A234 Gr. WPB, ASME B16.9
Schedule same as the
pipe
Beveled
ASTM A234 Gr. WPBW, with seams straight
longitudinal. Ex=1.0, ASME B16.9
3000
Screwed
Welding Box
3000
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
Schedule same as the
pipe
Beveled
3000
Flat
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
150
RF
ASTM A105 ASME B16.5, Schedule
and bore same as pipe.
150
RF
150
RF
150
RF
ASTM A105 ASME B16.5.
150
RF
ASTM A105 ASME B16.47TO(MSS-SP44).
300
RF
ASTM A105, ASME B16.36, welding neck,
bore same as pipe internal diameter
300
RF
ASTM A105, ASME B16.5.
Gate
Valves
8.1
20 to 50
(3/4 to 2)
800
Gate
Valves
8.1
8.3
80 to 600
(3 to 24)
150
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Welding Box
3000
ASTM A105, MSS SP-97
Welding Box
RF
ASTM A105, MSS SP-97
ASTM A105 ASME B16.5, Schedule and bore
same as pipe.
ASTM A105 ASME B16.47TO(MSS-SP44),
Schedule and bore same as pipe.
ASTM A105, Trim 5, OS&Y, ISO 15761,
fixed handwheel, ascending stem,
screwed bonnet, solid gate.
ASTM A216 Gr. WCB, Trim 5, OS&Y,
ISO 10434, fixed handwheel, rising
stem, flanged bonnet, solid gate..
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A03T1 Hoja 2 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
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Particular Technical Specification
Project:
Gate
Valves
Rev. 0
Sheet 83 de 214
“Dos Bocas New Refinery, , Tabasco”
8.1
650 to 900
(26 to 36)
150
Globo Valves
8.1
20 to 50
(3/4 to 2)
800
Globo Valves
8.1
80 to 300
(3 to 12)
150
Check
Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
Check
Valves
8.1
8.4
8.6
80 to 600
(3 to 24)
150
8.1, 8.6
8.20
8.21
80 to 600
(3 to 24)
150
Butterfly Valves
ET-032-PEMEX-2019
18/03/2019
RF
Welding Box
RF
Welding Box
RF
RF
ASTM A216 Gr. WCB, Trim 5 (see ISO
10434), OS&Y, ASME B16.34, ASME
B16.47A, handwheel fixed, rising stem,
flanged bonnet, solid or flexible gate.
ASTM A105, Trim 5, OS&Y, ISO 15761,
handwheel and rising stem, screwed bonnet.
STM A216 Gr. WCB, Trim 5 conforming to
API STD 623, OS&Y, ASME B16.34,
handwheel and rising stem, flanged bonnet..
ASTM A105, Trim 5, ISO 15761, ball or
piston type for working in horizontal / vertical
position, screwed cover.
ASTM A216 Gr. WCB, Trim 5, API STD 594
type B, flanged cover, swing type and stop
integrated to the body that limits the opening
of the disc.
ASTM A216 Gr. WCB, triple eccentricity,
solid one-piece seal ring, integral body seat,
metal-metal seal, API 609 category B design,
ISO 10497 fireproof. Flanged body. The
design must comply with 8.2.1 and 8.10 of
the ET-204-PEMEX-2019.
Gaskets
Gaskets
20 to 600
(3/4 to 24)
150
RF
Gaskets
650 to 900
(26 to 36)
150
RF
25 to 600
(1 to 24)
300
Orifice plate holder
flange
RF
Gaskets
9.1
Spiro-metallic, with centering ring (external)
of carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding belt and inner ring of
type 304 Stainless Steel, ASME B16.20 for
ASME B16.5 flanges, bore equal to the
internal diameter of the pipe.
Spiro-metallic, with centering ring (external)
of carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of
type 304 Stainless Steel, ASME B16.20, for
ASME B16.47A (MSS-SP44) flanges, bore
equal to the internal diameter of the pipe.
Spiro-metallic, with centering ring (external)
of carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding belt and inner ring of
type 304 Stainless Steel, ASME B16.20 for
ASME B16.5 flanges, bore equal to the
internal diameter of the pipe.
Bolts
ASTM A193 - Gr. B7, threads ASME
B1.1 class 2A.
ASTM A194 Gr. 2H, threads ASME
B1.1 class 2B.
Studs
Nuts
Miscellaneous
Eight Figure
(integral)
Eight Figure
(blind joint and
spacer
separated)
20 to 300
(3/4 to 12)
150
RF
ASTM A516 Gr. 70, ASME B 16.48
350 to 900
(14 to 36)
150
RF
ASTM A516 Gr. 70, ASME B 16.48
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A03T1 Hoja 3 de 5
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Particular Technical Specification
Project:
“T” type filters
12.1
“Y” type filters
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 84 de 214
“Dos Bocas New Refinery, Tabasco”
80 to 600
(3 to 24)
20 to 50
(3/4 to 2)
Branch Connections
Schedule same as the
pipe
600
Weldable
Welding Box
ASTM A234 Gr. WPB, S / C, weldable ends
ASTM A105, ends ASME B16.11
Graph T-A03T1 Branch Connections
Notes:
The pressure and temperature limits of this specification are based on the range of the corresponding flange class, indicated
1.1
in ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure and temperature
restrictions recommended by the manufacturer should be consulted.
1.2
The sacrificial thickness is included in the wall thickness that is assigned to the pipe, connections and fittings for this
specification, for the purposes of the permissible corrosion that can be tolerated during the life cycle of these parts..
2.1
In pipes, DN 20 (NPS 3/4) is the minimum diameter allowed.
2.2
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress analysis.
b. For pipes installed in pipe racks (raised frames) and above ground sleepers the minimum acceptable length of the pipe is
12 m.
2.3
All seam pipes and connections, which are indicated in this specification, the weld must be longitudinal straight and 100
percent radiographed.
3.1
Threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where cap plugs are installed..
a. In the sockets the end of greater diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS 2); the
Schedule must be equal to that of the pipe to be welded.
3.2
b. The threaded end sockets for use of pressure taps / nozzles (pressure transmitters and gauges), the threaded joints
must be sealed with welding..
4.1
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
4.2
Cap plugs for ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
4.5
b. Solid bar plugs caps are only allowed in openings without the use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate
holder flanges, seal with welding after installation.
5.1
It is forbidden to use pipe connections or field fabricated fittings such as wedges or "fish mouths" and flat caps. All
branches must be built with factory manufactured accessories..
a. Welding of reinforced connectors to the head must be fully penetrated in accordance with ASME code B31.3.
6.1
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated in the
specification is the branch.
The integrally reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the
6.2
hydrostatic or pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed with welding.
Purges and vents that are required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
6.3
In the integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, weld box welds
should be inspected, according to the percentage indicated in the pipe specification and index of pipe materials.
7.1
Welding box flanges must correspond to the pipeline Schedule.
7.2
Weld neck flanges must have the same pipeline Schedule to which they will be attached.
The orifice plate holder flanges and pipe to which they are to be attached must be of the same bore and thickness. Before
7.3
welding, the flange must be aligned to the tube and there should be no steps. After welding you must grind and polish the
inner weld (mirror finish), there should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar plugs)
must be sealed with welding.
7.4
Long neck flanges for thermowell taps / nozzle, the inner diameter must be specified to relate it to the outer diameter of
the thermowell and ensure insertion, the minimum allowed Class is 300..
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate, attached to the body and with impact letter on the valve
8.1
body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (bolts and nuts) must be of the appropriate specification and compatible with the material of the valve
body.
e. Handwheels of all valves must be solid, hollow handwheels are not allowed.
8.3
DN 50 gate valves (NPS 2) with flanged ends, flanges and body must be in one piece (not welded), they are only allowed in
equipment nozzles for instrument sockets such as magnetic and optical level indicators, level transmitters.
8.4
Check valves should be installed horizontally with the lid on top, to ensure the closure of the gate and prevent the return of
fluids.
8.6
It is forbidden to use ear valves or bipartition disc type installed between flanges.
8.20 Butterfly valves are for isolating large inventory containers. When they are extended bonnet this must be manufactured in
one piece.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A04T2 Hoja 1 de 5
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18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
8.21
9.1
Rev. 0
Sheet 85 de 214
“Dos Bocas New Refinery, Tabasco”
The packing of the packing box must be graphite for cryogenic and fire-resistant service.
For use on long neck flanges and orifice plate holder flanges.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, they must be included, in addition to the blocking valves, figures
eight to ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
HEAD DIAMETERS
12.1
DM
(mm)
20
25
40
50
80
100
150
NPS
(in)
3/4
1
1 1/2
2
3
4
6
200
250
300
350
400
450
500
600
650
700
750
800
900
8
10
12
14
16
18
20
24
26
28
30
32
36
NPS
(in)
DM
(mm)
TC - Wel di ng Box "T"
TC
TRC= Wel di ng Box Reduced "T"
TC
TRC
T = Stra i ght "T" wi th bevel ed ends
TC
TR = Reduced "T" wi th bevel ed ends . Stra i ght "T" + Reduction or, Reduced "T" + Reduction.
TC
ABN
T
TRC = Stra i ght "T" + Concentri c Reduction
W = Wel dol et
T
ABN = Connector Integra l l y Rei nforced "Ni pol et" or "Ni ppl e Pi pette"+ va l ve a s a n option to
T the "Ni pol et" or, "Ni ppl e Pi pete", Sockol et + Ni ppl e
*
**
* Al l bra nches mus t be bui l t wi th fa ctory ma nufa ctured a cces s ori es
** Thi s s peci fi ca tion prohi bi ts ma ki ng di rect i ns erts or wi th
T
T
OR
rei nforcement pl a tes , connections s houl d i nva ri a bl y be us ed
(Stra i ght "T", Reduced "T", Stra i ght "T + Reduction) or, i ntegra l l y
rei nforced connectors (Wel dol et, Ni ppol et or Ni ppl e Pi pette).
T
W
T
T
T
1/16" Ga p
TR
T
T
or
Ni ppol et Option
T
T
TRC
T
T
T
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
10
12
14
16
18
20
24
26
28
30
32
36
100 150 200 250 300 350 400 450 500 600 650 700 750 800 900
BRANCH DIAMETERS
GRAPH T-A03T1 - BRANCH CONNNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Service: Dry (cold) vent,
Closed liquid drain (cold),
Noncorrosive Hydrocarbons
Component
Notes
Sheet 86 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial Installations
Allowable Corrosion:
0 mm (0.0 in)
See Note 1.2
Rev. 0
RT
20 %
Pressure and Temperature Limits
See Note 1.1
Material: Stainless Steel TP304
Efforts Relief
N.A.
Diameter
Thickness (in) or
DN (NPS)
Minimum Schedule /
Class
Valve Internals
Trim 12
Ends
T-A03T3
NDT
Additional
See Note 6.3
(Class 150)
RF Face
Welding Box for welding in DN 50 (NPS
2) and smaller. Butt welds DN 80 (NPS 3)
and greater
Description / Material
Piping
2.1
2.2
2.1
2.2
Pipe
20 to 50
(3/4 to 2)
50
(2)
80 to 500
(3 to 20)
2.2
80S
Flat
ASTM A312 type TP304, ASME B36.19M, S/C
40S
10S
Beveled
Beveled
600 (24)
2.2
2.3
750 to 900
(30 to 36)
To be calculated by
Contractor
Nipple (in line)
3.1
20 to 50
(3/4 to 2)
80S
Socket conc
Socket exc.
3.2
20 to 50
(3/4 to 2)
Schedule same as the
pipe
20 to 50
(3/4 to 2)
3000
ASTM A312 Gr. TP304, ASME B36.19M,
seamless or with seam with Ex = 0.85 at
minimum.
ASTM A312 Gr. TP304, ASME B36.19M,
seamless, or ASTM A358 Gr. TP304, ASME
B36.19M with straight longitudinal seam
EFW, with Ex = 1.0.
ASTM A312 Gr. TP304, with seam
longitudinal straight, RX 100%, ASME
B36.10M, manufactured from plate A240
Gr. TP304
Nipples
Connections
90 ° Elbow
45 ° Elbow
Straight “T”
Reduced “T”
Cross
Coupling
Coupling
Reduced
Cap
Plug
Solid Bar Plug
4.1
4.2
4.5
Street Elbow
4.5
Elbow 90 °
long radius
Elbow 45 °
Conc.
Reduction
Eccentric
Reduction
5.1
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
3000
For welding
/ thread +
welding
For welding
/ thread +
welding
Welding Box
Screwed
Screwed
3000
Screwed
Schedule same as
the pipe
Beveled
ASTM A312 type TP304, ASME B36.19M,
seamless.
ASTM A403 Gr. WP304-S, MSS- SP-95
ASTM A182 Gr. F304, ASME B16.11
ASTM A182 Gr. F304, ASME B16.11,
thread ASME B1.20.1
ASTM A182 Gr. F304, ASME B16.11,
thread ASME B1.20.1
ASTM A182 Gr. F304, ASME B16.11,
threads female-male ASME B1.20.1
ASTM A403 Gr. WP304-S, ASME B16.9
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A04T2 Hoja 1 de 5
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Particular Technical Specification
Project:
Elbow 90 °
long radius
Elbow 45 °
Conc.
Reduction
Eccentric
Reduction
Lateral
derivation to
45° “Seamless
Lateral
Branch”
Side / lateral
Branch to 45 °
Lateral
Seamless
Reduction
650 to 900
(26 to 36)
5.1
5.5
80 to 450
(3 to 18)
Schedule same as the
pipe
Beveled
Schedule same as
the pipe
Beveled
Schedule same as
the pipe
Cap Plug
5.1
Cap Plug
5.1
Rev. 0
Sheet 87 de 214
“Dos Bocas New Refinery, Tabasco”
5.1
5.2
5.1
5.5
ET-032-PEMEX-2019
18/03/2019
150 to 350
(6 to 14)
80 to 600
(3 to 24)
650 to 900
(26 to 36)
Schedule same as
the pipe
Schedule same as
the pipe
ASTM A403 Gr. WP304-WU, with seams
longitudinal straight, 100% UT, ASME B16.9
ASTM A182 Gr. F304, manufactured in one
piece, with beveled end with thickness equal
to the pipeline
Beveled
ASTM A182 Gr. F304, manufactured in one
piece, with beveled end with thickness equal
to the pipeline.
Beveled
ASTM A403 Gr. WP304, seamless, ASME B16.9
Beveled
ASTM A403 Gr. WP304-WU, ASME B16.9
Integrally Reinforced Connections
Threaded
Outlet
Lateral Outlet
Lateral
Lateral & Elbo
Vessels)
Nipple Outlet or
Nipple pipette
Flanges
Welding Box
Flanges
Welding Neck
Flanges
Welding Neck
Flanges
6.1
6.2
20 to 50
(3/4 to 2)
3000
Beveled Screwed
ASTM A182 Gr. F304, MSS SP-97
6.1
6.3
20 to 50
(3/4 to 2)
3000
Beveled –
Welding
Box
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
80 to 600
(3 to 24)
10S
Beveled
6.1
750 to 900
(30 to 36)
To be calculated
by Contractor
6.1
80 to 900
(3 to 36)
Schedule same as
the pipe
6.1
6.3
20 to 50
(3/4 to 2)
3000
Beveled
- Flat
150
RF
150
RF
150
RF
150
RF
ASTM A182 Gr. F304, ASME B16.5.
150
RF
ASTM A182 Gr. F304, ASME B16.47TO(MSS-SP44)
300
RF
ASTM A182 Gr. F304, ASME B16.5.
7.1
7.2
7.2
Blind Flanges
Blind Flanges
Long Neck
Flanges
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
7.4
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
750 to 900
(30 to 36)
20 to 600
(3/4 to 24)
750 to 900
(30 to 36)
25 to 50
(1 to 2)
Beveled
Beveled
ASTM A182 Gr. F304, manufactured in one
piece up to ≤ DN 500 (NPS 20). ASME
B31.3 (302.2, 304.3, 326, 328.5.4)
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
ASTM A182 Gr. F304, ASME B16.5,
Schedule equal to that of the pipe
ASTM A182 Gr. F304, ASME B16.5,
Schedule and bore equal to that of the pipe.
ASTM A182 Gr. F304, ASME B16.47A
(MSS-SP44), Schedule and bore equal to
that of the pipe.
Valves
Gate
valves
8.1
8.13
8.19
20 to 50
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
800
Welding Box
ASTM A182 Gr. F304, Trim 12, OS&Y, ISO
15761, fixed handwheel, rising stem,
screwed bonnet, solid gate with pressure
equalizer hole.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Particular Technical Specification
Project:
Gate
valves
Butterfly valves
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 88 de 214
“Dos Bocas New Refinery, Tabasco”
8.1
8.3 8.13
8.19
80 to 600
(3 to 24)
150
RF
8.1
8.6
8.20
8.30
8.31
80 to 600
(3 to 24)
150
RF
ASTM A351 Gr. CF8, Trim 12, OS&Y,
ISO 10434, Fixed handwheel, rising
stem, flanged bonnet, with pressure
equalizing hole, wedge to be specified
by Pemex in the Project.
ASTM A351 CF8, triple eccentricity,
solid one-piece seal ring, integral body
seat, metal-metal seal, API STD 609
category B design, ISO 10497 fireproof.
Flanged body. The design must comply
with 8.2.1 and 8.10 of the ET-204PEMEX-2012..
Gaskets
Gaskets
20 to 600
(3/4 to 24)
150
RF
Gaskets
750 to 900
(30 to 36)
150
RF
25 to 50
(1 to 2)
300
RF
Gaskets
9.1
Spiro-metallic, with carbon steel (external
centering ring ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding belt and inner ring
of ASTM A240 type 304, ASME B16.20 for
ASME B16.5 flanges, bore equal to the
inside diameter of the pipe.
Spiro-metallic, with carbon steel (external)
centering ring ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding belt and inner ring
of ASTM A240 type 304, ASME B16.20 , for
ASME B16.47 Series A (MSS SP44) flanges,
bore equal to the inside diameter of the
pipeline.
Spiro-metallic, with carbon steel (external)
centering ring ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding belt and inner ring
of ASTM A240 type 304, ASME B16.20 for
ASME B16.5 flanges, bore equal to the
inside diameter of The pipe.
Bolts
ASTM A193 Gr. B8 Class 2, threads ASME
B1.1 class 2A
ASTM A194 Gr. 8, threads ASME B1.1 class
2A
Studs
Nuts
Miscellaneous
Eight Figure
(integral)
Eight Figure
(blind joint and
spacer
separated)
11.1
20 to 300
(3/4 to 12)
150
RF
11.1
350 to 900
(14 to 36)
150
RF
Schedule same as the
pipe
Weldable
3000
Welding
Box
“T” type filters
12.1
“T” type filters
12.1
80 to 600
(3 to 24)
20 to 50
(3/4 to 2)
Branch Connections
ASTM A240 Type 304, ASME B 16.48
ASTM A240 Type 304, ASME B 16.48
ASTM A351 CF8, seamless weldable ends.
ASTM A182 Gr. F304, ASME B16.11 ends.
Graph T-A03T3 Branch Connections
Notes:
1.1
1.2
2.1
For the Operating conditions limits of the service and Pressure and Temperature Limits, according to the Range of
the Flange Class (ASME B16.5) see PMS index. However, it may be limited for certain components allowed by this
specification. Refer to pressure and temperature restrictions recommended by the manufacturer.
The sacrificial thickness is included in the wall thickness assigned by this specification to the pipe, connections and
fittings. permissible corrosion effects, which can be tolerated during the life cycle of these parts.
The minimum diameter of DN 20 (NPS ¾) is allowed in pipes.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A04T2 Hoja 1 de 5
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Particular Technical Specification
Project:
2.2
2.3
3.1
3.2
4.1
4.2
4.5
5.1
5.2
5.5
6.1
6.2
6.3
7.1
7.2
7.4
8.1
8.3
8.6
8.13
8.19
8.20
8.30
8.31
9.1
11.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 89 de 214
“Dos Bocas New Refinery, Tabasco”
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress
analysis
b. For pipes installed in pipe racks (raised frames) and above ground sleepers the minimum acceptable length of the
pipe is 12 m.
All pipes with seam, this should be longitudinal straight and 100 percent radiographed.
The threaded joints must be NPT (ASME B1.20.1) and must be sealed with a welding, except where cap plugs are
installed.
a. In the Sockets, the end of greater diameter is restricted to DN 100 (NPS 4) and the Schedule must be equal to
that of the pipe to be welded. In the reduced part, the thickness or Schedule must be equal to the diameter of the
pipe of this specification.
b. Threaded end Sockets for use of pressure taps (pressure transmitters and pressure gauges) and threaded joints
must be sealed with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap for ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps allowed in unused openings of DN 20 to DN 50 (NPS ¾ to 2) are allowed, as in orifice plate holder r
flanges, seal with welding after installation.
The use of pipe connections or field fabricated fittings such as mitigated elbows, wedges or “fish mouths” and flat
caps is prohibited. All branches must be built with factory manufactured accessories.
All connections with seam, the weld must be longitudinal straight and 100 percent radiographed.
Head diameter and branch, Schedule or thickness of head and Branch should be specified.
a. Welding of the reinforced connectors to the head must be fully penetrated according to ASME code B31.3.
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the
specification is the branch.
The use of the integrally reinforced Threaded Outlet connector is limited for purges and vents that must be removed
after the hydrostatic or pneumatic test. Once the test is completed, they must be sealed with a solid bar plug and the
tread sealed with welding. Purges and vents that are required during startup, operation or maintenance must be Nipple
Outlet or Nipple pipette.
In the integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, weld box
welds should be inspected, according to the percentage indicated in the pipe specification and index of pipe
materials..
Welding box flanges must correspond to the pipeline Schedule.
Weld neck flanges must have the same Schedule to the pipeline to which they are to be joined..
For long neck flanges for thermowell nozzles the inner diameter must be specified to match the outer diameter of the
thermowell and ensure insertion, Class 300 is the minimum allowed..
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter on
the valve body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware(bolts and nuts) must be of the proper specification to the valve body material.
e. Handwheels of all valves must be solid, hollow handwheels are not allowed
DN 50 (NPS 2) gate valves with flanged ends, the flanges and body must be in one piece (not welded), they are only
allowed in equipment nozzles for instrument sockets such as magnetic and optical level indicators, level transmitters.
It is forbidden to use ear valves or bipartition disc type installed between flanges.
The valves must be installed with the rod in a horizontal position, so that in case of falling of the disc does not disable
the safety valve or the venting head.
The gate must be supplied with a pressure equalizer orifice 3 mm (1/8 in.) In diameter from the fluid containment side
and indicated on the valve body with an arrow the side of greatest pressure. The packing of the packing box must be
graphite for cryogenic and fire-resistant service.
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must be
manufactured in one piece.
The blocking valves before and after the pressure relief valve must be full-pass according to API 520.
For venting systems, when using triple eccentricity butterfly valve, the disk-stem joint must be by means of wedges
or grooves or a system that prevents the separation of the stem from the disk.
For use on long neck flanges and hole plate carrier flanges
The suction and discharge of pumps, inlet and outlet lines of heat exchangers and compressors, in battery limits, direct
fired heaters, filters that use filter elements of cartridges and all that equipment that are required to be isolated by
frequent maintenance, must count with permanent reversible eight figures.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
HEAD DIAMETERS
12.1
Rev. 0
Sheet 90 de 214
“Dos Bocas New Refinery, Tabasco”
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment
to be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, additional to the valves, figures eight must be included to
ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
DM
(mm)
20
25
40
50
80
100
150
200
250
300
350
400
450
500
600
650
700
NPS
(in)
3/4
1
1 1/2
2
3
4
6
8
10
12
14
16
18
20
24
26
28
NPS
(in)
DM
(mm)
TC - Welding Box "T"
TC
TRC= Welding Box Reduced "T"
TC
TRC
LC = Integrally Reinforced Connection 45° (Latrolet or equivalent) welding box ends.
TC
LB = Integrally Reinforced Connection 45° (Latrolet or equivalent) beveled ends.
TC
LC
DL = 45° Lateral branch (seamless lateral or equivalent).
DL
DLR DL
DLR DL
*
**
DLR = 45° Lateral branch (seamless reducing lateral or equivalent).
E = Insert + envelop.
* All branches must be built with factory manufactured accessories
DL
DLR
** This specification prohibits making direct insets or with reinforcement plates, invariably
DL
connections must be used (Straight "T", Reduced "T", Straight "T" plus reductions) or,
inttegrally reinforced connectors (Weldolet, Nipple or Nipple Pipette).
DL
DL
Enclosure thereof,
vent head thickness
DL
LB
E = Envelop Direct Insert
DL
Venting Header
E
3/4
1
1 1/2
2
3
26
28
30
32
36
20
25
40
50
80 100 150 200 250 300 350 400 450 500 600 650
700
750
800
900
4
6
8
10
12
14
16
18
20
24
BRANCH DIAMETERS
GRAPH T-A03T3 - BRANCH CONNNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A04T2 Hoja 1 de 5
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Rev. 0
Sheet 91 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Piping Material Specification
T-A04T1
Installations
Service: Butane, Ethane (gas), Regeneration
gas, Natural Gas, Non-corrosive hydrocarbons
H2 CO2, Methane (gas), Isopropyl alcohol,
Isopropyl alcohol, Cyclohexane, Non-corrosive
Pressure and
hydrocarbon condensate, Crude, Reduced
Temperature Limits
RT
NDT
Class 150
840 kpa@ 350°C
crude, Hydrocarbon condensate, Non-corrosive
20 %
20 %
RF Face
See Note 1.1
hydrocarbons, Light non-corrosive
hydrocarbons, Methanol, Light gasoline, Heavy
naphtha, Non-corrosive chemical reagents,
Water Non-corrosive hydrocarbons, Air-Noncorrosive hydrocarbons-water, Corrosion
inhibitor, Contaminated condensate (waterHydrocarbons).
Material: CS
Allowable Corrosion:
Thermal
Valve
Welding Box welding in DN 50
1.6 mm (0.0625 in)
Treatment and
Internals
(NPS 2) and smaller; Butt welds
Efforts Relief
Trim 5
DN 80 (NPS 3) and larger
See Note 1.2
N.A.
See
Diameter
Thickness (in) or
Component
Ends
Description
Notes
Minimum Schedule
/ Class
Piping
20 to 50
2.1
80
Flat
(3/4 to 2)
ASTM A106 Gr. B
80 to 600
Standard
Beveled
Pipe
(3 to 24)
2.2
To be calculated by
ASTM A672 Gr. C60 (Plate ASTM A516
2.3
650 to 900
Beveled
Contractor
Gr. 60), Class 12, with seams longitudinal
(26 to 36)
straight, EFW, Ex = 1.0
Nipples
20 to 50
Flat / Thread
Nipple (in line)
3.1
80
ASTM A106 Gr. B
(3/4 to 2)
Flat / Flat
Socket conc.
Socket exc.
3.2
Connections
90 ° elbow
45 ° Elbow
Straight “T”
Reduced “T”
Coupling
Reduced
Coupling
4.1
Cap Plug
Solid Bar Plug
Street Elbow
20 to 50
(3/4 to 2)
Schedule same as
the pipe
20 to 50
(3/4 to 2)
3000
4.2
20 to 50
(3/4 to 2)
3000
4.5
20 to 50
(3/4 to 2)
4.5
20 to 50
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
3000
Thread /
ASTM A234 Gr. WPB, MSS SP-95
Beveled
Flat / Beveled
Welding Box
ASTM A105, ASME B16.11
Screwed
ASTM A105, ASME B16.11, thread ASME
B1.20.1
Screwed
ASTM A105, ASME B16.11, thread ASME
B1.20.1
Screwed
ASTM A105, ASME B16.11, threads (female - male
ASME B1.20.1)
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A04T2 Hoja 1 de 5
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Sheet 92 de 214
“Dos Bocas New Refinery, Tabasco”
90 ° elbow long
radius
45 ° Elbow
Straight “T”
80 to 600
5.1
Reduced “T”
(3 to 24)
Conc Reducer
Eccentric
Reducer
Cap Plug
90 ° elbow long
radius
45 ° Elbow
5.1
650 to 900
Straight “T”
5.2
(26 to 36)
Reduced “T”
Conc Reducer
Eccentric
Reducer
Cap Plug
Integrally Reinforced Connections
6.1
20 to 50
Threaded Outlet
6.2
(3/4 to 2)
6.1
20 to 50
Socket Weld
6.3
(3/4 to 2)
Outlet
6.1
20 to 50
Lateral Outlet
6.3
(3/4 to 2)
80 to 350
Butt Weld Outlet
6.1
(3 to 14)
Nipple Outlet o
6.1
20 to 50
6.3
(3/4 to 2)
Nipple pipette
Flanges
20 to 50
Welding Box
7.1
(3/4 to 2)
Flanges
Welding Neck
80 to 600
7.2
Flanges
(3 to 24)
650 to 750
Welding Neck
7.2
(26 to 36)
Flanges
20 to 600
Blind Flanges
(3/4 to 24)
650 to 900
Blind Flanges
(26 to 36)
Orifice Plate
50 to 600
7.3
(2 to 24)
holder Flanges
Schedule same as
the pipe
Beveled
ASTM A234 Gr. WPB, ASME B16.9
Schedule same as
the pipe
Beveled
ASTM A234 Gr. WPBW, with seams
longitudinal straight, Ex=1.0, ASME B16.9
3000
Screwed
ASTM A105, MSS SP-97
Welding Box
3000
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
Schedule same as
the pipe
Beveled
3000
Flat
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
150
RF
ASTM A105 ASME B16.5
150
RF
ASTM A105 ASME B16.5, Schedule and
bore same as pipe
150
RF
150
RF
150
RF
300
RF
RF
25 to 50
(1 to 2)
300
Gate
Valves
8.1
20 to 50
(3/4 to 2)
800
Gate
Valves
8.1
8.3
80 to 600
(3 to 24)
150
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Welding Box
3000
7.4
Long Neck
Flanges
Valves
Rev. 0
Welding Box
RF
ASTM A105, MSS SP-97
ASTM A105 ASME B16.47TO(MSSSP44), Schedule and bore same as pipe.
ASTM A105 ASME B16.5.
ASTM A105 ASME B16.47TO(MSSSP44).
ASTM A105, ASME B16.36, welding neck,
Schedule and bore same as pipe internal
diameter.
ASTM A105, ASME B16.5.
ASTM A105, Trim 5, OS&Y, ISO 15761,
fixed handwheel, rising stem, screwed
bonnet, solid gate.
ASTM A216 Gr. WCB, Trim 5, OS&Y, ISO
10434, Fixed handwheel, rising stem,
flanged bonnet, solid gate.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A04T2 Hoja 1 de 5
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
8.1
650 to 900
(26 to 36)
150
Globe Valves
8.1
20 to 50
(3/4 to 2)
800
Globe Valves
8.1
80 to 300
(3 to 12)
150
Check Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
8.1
8.4
8.6
80 to 600
(3 to 24)
150
8.1, 8.6
8.20
8.21
80 to 600
(3 to 24)
150
Butterfly Valves
Rev. 0
Sheet 93 de 214
“Dos Bocas New Refinery, Tabasco”
Gate
Valves
Check Valves
ET-032-PEMEX-2019
18/03/2019
RF
Welding Box
RF
Welding Box
RF
RF
ASTM A216 Gr. WCB, Trim 5 (see ISO
10434), OS&Y, ASME B16.34, ASME
B16.47A, handwheel fixed, rising stem,
flanged bonnet, solid gate (crude and
condensates) or Flexible in clean
services, low density, low corrosion.
ASTM A105, Trim 5, OS&Y, ISO 15761,
rising handwheel and stem, screwed
bonnet.
ASTM A216 Gr. WCB, Trim 5
conforming to API STD 623, OS&Y,
ASME B16.34, rising handwheel and
stem, flanged Bonnet.
ASTM A105, Trim 5, ISO 15761, ball or
piston type to work in horizontal / vertical
position, screwed cover.
ASTM A216 Gr. WCB, Trim 5, API STD
594 type B, flanged cover, swing type and
stop integrated to the body that limits the
opening of the disc.
ASTM A216 Gr. WCB, triple eccentricity,
solid-seal seal ring, integral seat to the
body, metal-metal seal, API 609 category
B design, ISO 10497 fireproof, Flanged
body. The design must comply with 8.2.1
and 8.10 of ET- 204-PEMEX-2012.
Gaskets
Gasket
20 to 600
(3/4 to 24)
150
RF
Gasket
650 to 900
(26 to 36)
150
RF
25 to 600
(1 to 24)
300
For orifice plate holder
flange
RF
Gasket
9.1
Bolts
Studs
10.1
Nuts
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Spiro-metallic,
with centering ring
(external) of carbon steel ASTM A36 /
A36M: 2012 with anticorrosive coating,
flexible graphite filling (asbestos-free),
winding belt and inner ring of type 304
Stainless Steel, ASME B16.20 for ASME
B16.5 flanges, bore equal to the internal
diameter of the pipe.
Spiro-metallic,
with centering ring
(external) of carbon steel ASTM A36 /
A36M: 2012 with anticorrosive coating,
flexible graphite filling (asbestos-free),
winding and inner ring of type 304
Stainless Steel, ASME B16.20, for flanges
ASME B16.47A (MSS-SP44), bore equal
to the internal diameter of the pipe.
Spiro-metallic,
with centering ring
(external of carbon steel ASTM A36 /
A36M: 2012 with anticorrosive coating,
flexible graphite filling (asbestos-free),
winding belt and inner ring of type 304
Stainless Steel, ASME B16.20 for ASME
B16.5 flanges, bore equal to the internal
diameter of the pipe.
ASTM A193 Gr. B7, threads ASME B1.1
class 2A.
ASTM A194 Gr. 2H, threads ASME B1.1
class 2B.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A04T2 Hoja 1 de 5
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Miscellaneous
Eight figure
(integral)
Eight figures
(blind joint and
spacer
separated)
“T” type filter
12.1
“Y” type filter
12.1
Rev. 0
Sheet 94 de 214
“Dos Bocas New Refinery, Tabasco”
20 to 300
(3/4 to 12)
150
RF
ASTM A515 Gr. 70, ASME B 16.48
350 to 900
(14 to 36)
150
RF
ASTM A515 Gr. 70, ASME B 16.48
Schedule same as
the pipe
Weldable
80 to 600
(3 to 24)
20 to 50
(3/4 to 2)
Branch Connections
600
Welding Box
ASTM A234 Gr. WPB, S/C
ASTM A105, ends ASME B16.11
Graph T-A04T1 Branch Connections
Notes:
1.1
1.2
2.1
2.2
2.3
3.1
3.2
4.1
4.2
4.5
5.1
6.1
6.2
6.3
7.1
7.2
7.3
7.4
The pressure and temperature limits of this specification are based on the range of the corresponding flange class, indicated in
ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure and temperature
restrictions recommended by the manufacturer should be consulted.
In the wall thickness that is assigned to the pipe, connections and fittings by this specification, the sacrificial thickness is included,
for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
In pipes, DN 20 (NPS ¾) is the minimum diameter allowed.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress analysis.
b. For pipes installed in pipe racks (raised frames) and above ground sleepers the minimum acceptable length of the pipe is 12 m.
All seam pipes and connections, which are indicated in this specification, the weld must be longitudinal straight and 100 percent
radiographed.
The threaded joints must be NPT (ASME B1.20.1) and the thread must be sealed with welding, except where cap plugs are
installed.
a. In the sockets the end of greater diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS 2); the Schedule
must be equal to that of the pipe to be welded.
b. The threaded end sockets for use of pressure taps (pressure transmitters and gauges), the threaded joints must be sealed
with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap for ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps are only allowed in openings without the use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate holder flang es,
seal thread with welding after installation.
It is forbidden to use pipe connections or field fabricated fittings such as wedges or “fish mouths” and flat caps. All branc hes must
be built with factory manufactured accessories.
a. Welding of reinforced connectors to the head must be fully penetrated in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified.
c. The diameter indicated in the specification is the branch.
The integrally reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the hydrostatic
or pneumatic test. Once the test is completed, they must be closed with a solid bar plug and the thread sealed with welding.
Purges and vents that are required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
In the fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, weld box welds should be
inspected, according to the percentage indicated in the pipe specification and piping material index.
Welding box flanges must correspond to the pipeline Schedule.
Weld neck flanges must have the same pipeline Schedule to which they will be attached.
The orifice plate holder flange and pipe to which they are to be attached must be of the same bore and thickness. Before welding,
the flange must be aligned to the tube and there should be no steps. After welding you must grind and polish the inner weld (mirror
finish), there should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar plugs) must be sealed with
welding.
Long neck flanges for thermowell taps / nozzles, the inner diameter must be specified to relate it to the outer diameter of the
thermowell and ensure insertion, the minimum allowed Class is 300.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Rev. 0
Sheet 95 de 214
“Dos Bocas New Refinery, Tabasco”
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate, attached to the body and with impact letter on the valve body:
8.1
identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (bolts and nuts) must be of the appropriate specification and compatible with the material of the valve body
and handwheels of all valves must be solid, hollow handwheels are not allowed.
8.3
8.4
8.6
8.20
8.21
9.1
HEAD DIAMETERS
12.1
DN 50 gate valves (NPS 2) with flanged ends, flanges and body must be in one piece (not welded), they are only allowed in
equipment nozzles for instrument sockets such as magnetic and optical level indicators, level transmitters.
Check valves should be installed horizontally with the lid on top, to ensure the closure of the gate and prevent the backflow of
fluids.
It is forbidden to use ear valves or bipartite disc type installed between flanges.
Butterfly valves are for isolation large inventory containers. When they are extended bonnet, this must be manufactured in one
piece.
The packing of the packing box must be graphite for cryogenic and fire-resistant service.
For use on long neck flanges and hole plate holder flanges.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, figure eight must be included, in addition to the blocking valves, to ensure
their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
DM
(mm)
20
25
40
50
80
100
150
NPS
(in)
3/4
1
1 1/2
2
3
4
6
200
250
300
350
400
450
500
600
650
700
750
800
900
8
10
12
14
16
18
20
24
26
28
30
32
36
NPS
(in)
DM
(mm)
TC - Welding Box "T"
TC
TRC= Welding Box Reduced "T"
TC
TRC
T = Straight "T" with beveled ends
TC
TR = Reduced "T" with beveled ends . Straight "T" + Reduction or, Reduced "T" + Reduction.
TC
ABN
TRC = Straight "T" + Concentric Reduction
T W = Weldolet
T
ABN = Connector Integrally Reinforced "Nipolet" or "Nipple Pipette"+ valve as an option to
T the "Nipolet" or, "Nipple Pipete", Sockolet + Nipple
*
**
* Al l branches mus t be built with factory manufactured acces s ories
** This s pecification prohibits making direct ins erts or with
T
T
OR
reinforcement plates , connections s hould invariably be us ed
(Straight "T", Reduced "T", Straight "T + Reducers ) or, integrally
reinforced connectors (Weldolet, Nippolet or Nipple Pipette).
T
W
T
T
T
1/16" Gap
TR
T
T
or
Nippolet Option
T
T
TRC
T
T
T
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
10
12
14
16
18
20
24
26
28
30
32
36
100 150 200 250 300 350 400 450 500 600 650 700 750 800 900
BRANCH DIAMETERS
GRAPH T-A04T1 - BRANCH CONNNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A04T2 Hoja 1 de 5
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Allowable Corrosion:
3.2 mm (0.125 in)
See Note 1.2
Component
Sheet 96 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
Service: Crude
Reduced, Crude
Residue "AV" Residue
See
Notes
Rev. 0
T-A04T2
NDT
Additional
See Note 6.3
100%
Pressure and Temperature Limits
See Note 1.1
RT
100 %
Material: 9Cr-1Mo
Efforts Relief: YES
See Notes 1.3 y 1.10
welding’s Box for welding in DN 50 (NPS
2) and smaller, Butt welding DN 80 (NPS
3) and larger
Diameter
DN (NPS)
Valve
Internals
Trim 5
Thickness (in) or
Minimum Schedule /
Class
Ends
Class 150
RF Face
Description / Material
Piping
2.1, 2.2
Pipe
2.2
20
(3/4)
25 to
50
(1 to 2)
80 to 150
(3 to 6)
200 (8)
0.250
250 (10)
20
300 to 450
(12 to 18)
500 to 600
(20 to 24)
160
Flat
80
STD
ASTM A335 Gr. P9, ASME B36.10
Beveled
30
20
Nipples
Nipple (in line)
Weldable
/ thread +
weld
3.1
20 to 50
(3/4 to 2)
80
3.2
25 to 50
(1 to 2)
Schedule same as
the pipe
20
(3/4)
25 to
50
(1 to 2)
6000
Socket conc.
Socket
eccentric.
Connections
90 ° elbow
45 ° Elbow
Straight “T”
Reduced “T”
Cross
Coupling
Reduced
Coupling
Cap
Plug
Solid Bar Plug
4.1, 4.7
Street Elbow
4.5, 4.7
4.2
4.2
4.5
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Weldable
Beveled
ASTM A335 Gr. P9
ASTM A234 Gr. WP9, MSS SP-95
ASTM A182 Gr. F9, ASME B16.11
3000
3000
Threaded
Threaded
3000
Threaded
ASTM A182 Gr. F9, ASME B16.11, thread
ASME B1.20.1
ASTM A182 Gr. F9, ASME B16.11, thread
ASME B1.20.1
ASTM A182 Gr. F9, threads (female - male
ASME B1.20.1)
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Rev. 0
Sheet 97 de 214
“Dos Bocas New Refinery, Tabasco”
Elbow 90 °
long radius
45 ° Elbow
Straight “T”
80 to 600
5.1
Reduced “T”
(3 to 24)
Concentric
Reduction
Eccentric
Reduction
Cap Plug
Integrally Reinforced Connections
6.1, 6.2,
20 to 50
Threaded
4.7
(3/4 to2)
Outlet
20
(3/4)
Socket Weld
6.1, 6.3
25 to 50
Outlet
Schedule same as
the pipe
Beveled
ASTM A234 Gr. WP9, seamless, ASME B16.9
3000
Beveled Threaded
ASTM A182 Gr. F9, MSS SP-97
Beveled
ASTM A182 Gr. F9, MSS SP-97
6000
(1 to 2)
3000
6.1, 6.3,
4.7
50 (2)
3000
Beveled
Butt Weld
Outlet
6.1, 4.7
80 to
150
(3 to 10)
Schedule same as the
pipe
Beveled
ASTM A182 Gr. F9, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A182 Gr. F9, MSS SP-97
Nipple Outlet o
Nipple pipette
Flanges
6.1, 6.3,
4.7
50 (2)
3000
Beveled
Beveled Flat
ASTM A182 Gr. F9, MSS SP-97
ASTM A182 Gr. F9, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
7.1, 4.7
20 to 50
(3/4 to 2)
150
RF
ASTM A182 Gr. F9 ASME B16.5 Schedule
equal to that of the pipe.
150
RF
ASTM A182 Gr. F9 ASME B16.5, Schedule
and bore equal to that of the pipe.
150
RF
ASTM A182 Gr. F9 ASME B16.5.
Lateral Outlet
Welding
Box
Flanges
Welding Neck
Flanges
7.2, 4.7
80 to 600
(3 to 24)
80 to 600
(3 to 24)
Blind Flanges
7.2, 4.7
Orifice Plates
Holder Flanges
7.3, 4.7
80 to 600
(3 to 24)
300
RF
ASTM A182 Gr. F9, ASME B16.36
Weldable neck, bore equal to the inside
diameter of the pipe.
7.4, 4.7
50
(2)
300
RF
ASTM A182 Gr. F9, ASME B16.5.
Gate
Valves
8.1
20 to 50
(3/4 to 2)
800
Beveled
Gate
Valves
8.1
8.3
8.27
80 to 600
(3 to 24)
150
RF
Globe Valves
8.1
20 to 50
(3/4 to 2)
800
Beveled
Globe Valves
8.1
8.27
80 to 300
(3 to 12)
150
RF
ASTM A217 Gr. C12, Trim 5 conforming to
API STD 623, OS&Y, ASME B16.34, rising
handwheel and stem, flange bonnet.
Check
Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
Beveled
ASTM A182 Gr. F9, Trim 5, ISO 15761, ball
or piston type for working in a horizontal /
vertical position, screwed cover.
Long Neck
Flanges
Valves
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A182 Gr. F9, Trim 5, OS&Y, ISO
15761, Fixed handwheel, rising stem,
screwed bonnet, solid gate.
ASTM A217 Gr. C12, Trim 5, OS&Y, ISO
10434, Fixed handwheel, rising stem,
flanged bonnet, solid gate..
ASTM A182 Gr. F9, Trim 5 (see ISO
10434), OS&Y, ASME B16.34, handwheel
and rising stem, screwed bonnet.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A04T2 Hoja 2 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Check
Valves
Butterfly Valves
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 98 de 214
“Dos Bocas New Refinery, Tabasco”
8.1
8.4
8.27
80 to 600
(3 to 24)
150
8.1
8.6
8.20
8.21
80 to 600
(3 to 24)
150
20 to 600
(3/4 to 24)
150
RF
25 to 600
(1 to 24)
300
RF
RF
RF
ASTM A217 Gr. C12, Trim 5, API STD 594
type B, flanged cover, swing type and stop
integrated to the body that limits the
opening of the disc.
ASTM A217 Gr. C12, triple eccentricity,
solid one-piece seal ring, integral body
seat, metal-metal seal, API STD 609
category B design, ISO 10497 fireproof.
Flanged body. The design must comply
with 8.2.1 and 8.10 of ET-204-PEMEX2012.
Gaskets
Gaskets
9.1
Spiro-metallic, with centering ring (external)
of ASTM A36 / A36M: 2012 carbon steel
with anticorrosive coating, Thermiculite ®
filler or equivalent [up to 480 ° C (896 ° F)],
winding belt and inner ring of ASTM A240
type 316, ASME B16.20 for flanges ASME
B16.5, bore equal to the inside diameter of
the pipe.
Bolts
Threaded end, ASTM A193 Gr. B16, thread
ASME B1.1 class 2A
ASTM A194 Gr. 4, thread ASME B1.1 class 2A
Studs
Nuts
Miscellaneous
Eight Figure
(integral)
Eight Figure
(blind joint
and spacer
separated)
11.1
80 to 300
(3 to 12)
150
RF
ASTM A387 Gr. 9 class 1, ASME B 16.48
11.1
350 to 600
(14 to 24)
150
RF
ASTM A387 Gr. 9 class 1, ASME B 16.48
Schedule same as
the pipe.
Weldable
ASTM A234 Gr. WP9, seamless, weldable ends
Beveled
ASTM A182 Gr. F9, ends ASME B16.1
Filters
12.1
Filters
12.1, 4.7
80 to 600
(3 to 24)
20
(3/4)
25 to 50
(1 to 2)
Branch Connections
6000
3000
Graph T-A04T2 Branch Connections
Notes:
1.1
1.2
1.3
1.10
2.1
2.2
3.1
For the Operating limits conditions of the service and Pressure and Temperature Limits, according to the Range of
the Flange Class (ASME B16.5) see PMS index. However, it may be limited for certain components allowed by this
specification. Refer to pressure and temperature restrictions recommended by the manufacturer.
The sacrificial thickness for permissible corrosion effects, which can be tolerated during the life of these parts, is
included in the wall thickness assigned by this specification to the pipe, fittings and accessories.
Apply according to the requirements of the tables: 330.1.1 and 331.1.1 of ASME B31.3 in the components of the
Piping System..
Effort Relief for all welding.
DN 20 (NPS ¾) is the minimum diameter allowed in pipes.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress
analysis
b. Pipes installed in pipe racks (raised frames) and above ground sleepers the minimum acceptable length is 12 m.
The threaded joints must be NPT (ASME B1.20.1) and the tread must be sealed with welding, except where cap
plugs are installed.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A05T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
3.2
4.1
4.2
4.5
4.7
5.1
6.1
6.2
6.3
7.1
7.2
7.3
7.4
8.1
8.2
8.3
8.4
8.6
8.20
8.21
8.27
9.1
11.1
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 99 de 214
“Dos Bocas New Refinery, Tabasco”
a. In the Sockets, the end of greater diameter is restricted to DN 100 (NPS 4) and the Schedule must be equal to
that of the pipe to be welded. In the reduced part, the thickness or Schedule must be equal to the diameter of the
pipe of this specification.
b. Threaded end Sockets for use of pressure taps / nozzles (pressure transmitters and pressure gauges) and
threaded joints the thread must be sealed with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap Plug for terminal ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps allowed in unused openings of DN 20 to DN 50 (NPS ¾ to 2) are allowed, as in orifice plate holder
flanges, seal with welding after installation.
Normalized and tempered.
Prohibited the use of pipe connections or field fabricated fittings such as wedges or “fish mouths” and flat caps. All
branches must be built with factory manufactured accessories.
a. Welding of the reinforced connectors to the head must be fully penetrated according to ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated
in the specification is the branch.
The use of the integrally reinforced Threaded Outlet connector is limited for purges and vents that must be removed
after the hydrostatic or pneumatic test. Once the test is completed, they must be closed with a solid bar plug and
the thread sealed with welding. Purges and venting that is required during startup, operation or maintenance must
be Nipple Outlet or Nipple pipette.
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, weld box
welds should be inspected, according to the percentage indicated in the pipe specification and index of pipe
materials..
Welding box flanges must correspond to the pipeline Schedule .
Welding neck flanges must have the same Schedule to the pipeline to which they are to be joined.
The orifice plate holder flange and pipe to be joined must have the same bore and thickness. Before welding, the
flange must be aligned to the tube and there should be no steps. After welding, the inner weld (mirror finish) must
be ground and polished, there should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar
plugs) must be sealed with welding.
For long neck flanges for thermowell taps / nozzles the inner diameter must be specified to match the outer diameter
of the thermowell and ensure insertion, Class 300 is the minimum allowed.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter
on the valve body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (bolts, nuts) must be of the proper specification to the valve body material.
e. Handwheel of all valves must be solid, hollow handwheels are not allowed.
These valves: single expansion gate valve, parallel disc gate (double expansion), sliding (parallel faces), trunnion
mounted ball and wafer type retention, are only allowed under the express request of Pemex in the Project or by
specification of the Technologist or Licensor.
DN 50 (NPS 2) gate valves with flanged ends, flanges and body must be in one piece (not welded), only they are
allowed in equipment nozzles for instrument such as magnetic and optical level indicators, level transmitters.
Use a reduced area (pass) ball valve, only when the pressure drop does not affect the process.
It is forbidden to use ear valves or bipartition disc type installed between flanges.
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must be
manufactured in one piece.
The packing of the packing box must be graphite for cryogenic and fire-resistant service.
Standardized and tempered material.
For use on long neck flanges and orifice pate holder flange.
The suction and discharge of pumps, inlet and outlet lines of heat exchangers and compressors, in battery limits,
direct fired heaters, filters that use filter elements of cartridges and all that equipment that are required to be isolated
by frequent maintenance, must count with permanent reversible figures eight.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment
to be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, additional t valves, figures eight must be included to ensure
their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A05T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
HEAD DIAMETERS
Particular Technical Specification
Project:
DM
(mm)
20
25
40
50
80
100
150
NPS
(in)
3/4
1
1 1/2
2
3
4
6
200
250
300
350
400
450
500
600
8
10
12
14
16
18
20
24
NPS
(in)
DM
(mm)
Rev. 0
Sheet 100 de 214
“Dos Bocas New Refinery, Tabasco”
TC - Welding Box "T"
TC
TRC= Welding Box Reduced "T"
TC
TRC
T = Straight "T" with beveled ends
TC
TR = Reduced "T with beveled ends. Straight "T" + Reduction or, Reduced "T" + Reduction.
TC
ABN
TRC = Straight "T" + Concenytric Reduction
T W = Weldolet
T
ABN = Connector Integrally Reinforced "Nipolet" or "Nipple Pipete"+ valve as an
T option to the "Nipolet" or, "Nipple Pipete", Sockolet + Nipple
*
**
* All branches must be built with factory manufactured accessories
** This specification prohibits making direct inserts or with reinforcement plates,
T
T
OR
TR
T
W
or
1/16" Gap
Option
connections (Straight T, Reduced T, Straight T + Reductions) or, fully reinforced
T connectors (Weldolet, Nipolet or Nipple Pipette) should invariably be used.
T
T
TRC RC
T
T
3/4
1
1 1/2
2
3
20
25
40
50
80 100 150 200 250 300 350 400 450 500 600
4
6
8
10
12
14
16
18
20
24
BRANCH DIAMETERS
GRAPH T-A04T2 BRANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A05T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Pressure and Temperature
Limits
See Note 1.1
Service: Rich Amine / Spent
Amine
Component
Notes
Sheet 101 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
Allowable Corrosion:
0 mm (0 in)
See Note 1.2
Rev. 0
Material: Stainless Steel Type T304
Efforts Relief
N.A.
Diameter
Thickness (in) or
DN (NPS)
Minimum Schedule /
Class
T-A04T3
RT
20 %
Valve
Internals
Trim 12
Ends
(Class 150)
NDT
RF Face
Additional
See Note 6.3
Welding Box welding in DN 50 (NPS 2) and smaller;
Butt welds DN 80 (NPS 3) and greater
Description / Material
Piping
Pipe
2.1
2.2
2.2
20 to 50
(3/4 to 2)
50
(2)
80 to 300
(3 to 12)
80S
Flat
ASTM A312 Gr. TP304, ASME B36.19M, S/C.
40S
10S
Beveled
ASTM A312 Gr. TP304, ASME B36.19M, seamless
or with seams Ex= 0.85 as minimum.
Nipples
Weldable/
thread
+welding
Weldable /
thread+
welding
Nipple (in line)
3.1
20 to 50
(3/4 to 2)
80S
Socket conc.
Socket exc.
3.2
20 to 50
(3/4 to 2)
Schedule same as
the pipe.
20 to 50
(3/4 to 2)
3000
Welding
Box
3000
Threaded
Connections
90 ° elbow
45 ° Elbow
Straight “T”
Reduced “T”
Cross
Coupling
Reduced
Coupling
Cap
Plug
Solid Bar
Plug
Street Elbow
4.1
4.2
4.5
4.5
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
Elbow 90 °
long radius
5.1
45 ° Elbow
Straight “T”
80 to 300
Reduced “T”
(3 to 12)
Concentric
Reduction
5.3
Eccentric
Reduction
Cap Plug
Integrally Reinforced Connections
Threaded
6.1
20 to 50
Outlet
6.2
(3/4 to 2)
Socket Weld
6.1
20 to 50
Outlet
6.3
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Threaded
3000
Threaded
Schedule same as
the pipe.
3000
3000
Beveled
BeveledThreaded
BeveledWelding
Box
ASTM A312 Gr. TP304, ASME B36.19M, seamless
ASTM A403 Gr. WP304, MSS SP-95
ASTM A182 F304, ASME B16.11
ASTM A182 F304, ASME B16.11, thread ASME
B1.20.1
ASTM A182 F304, ASME B16.11, thread ASME
B1.20.1
ASTM A182 F304, ASME B16.11, threads femalemale ASME B1.20.1
ASTM A403 Gr. WP304-S, seamless ASME B16.9
ASTM A182 Gr. F304, MSS SP-97
ASTM A182 Gr. F304, MSS SP-97
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A05T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Lateral Outlet
Butt Weld
Outlet
Nipple Outlet o
Nipple pipette
Flanges
Welding Box
Flanges
Welding Neck
Flanges
6.1
6.3
6.1
6.3
20 to 50
(3/4 to 2)
80 to 300
(3 to 12)
20 to 300
(3/4 to 12)
7.1
7.2
Blind Flanges
Sheet 102 de 214
“Dos Bocas New Refinery, Tabasco”
20 to 50
(3/4 to 2)
80 to 300
(3 to 12)
20 to 50
(3/4 to 2)
6.1
Rev. 0
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3, 326,
BeveledWelding Box 328.5.4)
3000
10S
Beveled
Beveled Flat
3000
150
RF
150
RF
150
RF
ASTM A182 Gr. F304, MSS SP-97
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A182 Gr. F304, ASME B16.5 ID Schedule
equal to that of the pipe..
ASTM A182 Gr. F304, ASME B16.5, Schedule
and bore equal to that of the pipe..
ASTM A182 Gr. F304, ASME B16.5.
7.3
50 to 300
(2 to 12)
300
RF
ASTM A182 Gr. F304, ASME B16.36, weldable
neck, bore equal to that of the pipe.
7.4
25 to 50
(1 to 2)
300
RF
ASTM A182 Gr. F304, ASME B16.5.
Gate
Valves
8.1
20 to 50
(3/4 to 2)
800
Welding
Box
Gate
Valves
8.1
8.3
80 to 300
(3 to 12)
150
RF
Globe Valves
8.1
20 to 50
(3/4 to 2)
800
Welding
Box
Globe Valves
8.1
80 to 300
(3 to 12)
150
RF
Check
Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
Welding
Box
Check
Valves
8.1
8.4
80 to 300
(3 to 12)
150
RF
8.1
8.6
8.20
8.21
80 to 300
(3 to 12)
150
RF
20 to 300
(3/4 to 12)
150
RF
25 to 300
(1 to 12)
300
RF
Orifice Plate
Holder Plates
Long Neck
Flanges
Valves
Butterfly Valves
ASTM A182 Gr. F304, Trim 12, OS&Y, ISO 15761,
solid gate, fixed steering wheel, ascending stem,
screwed bonnet.
ASTM A351 Gr. CF8, API STD 603, Trim 12
conforming to ISO 10434, OS&Y, fixed flywheel,
rising stem, flanged bonnet, flexible wedge.
ASTM A182 Gr. F304, Trim 12, OS&Y, ISO 15761,
flywheel and riser, bolted bonnet.
ASTM A351 Gr. CF8, ASME B16.34, Trim 12
conforming to API STD 623, OS&Y, flywheel and
rising stem, flanged bonnet.
ASTM A182 Gr. F304, Trim 12, ISO 15761, ball or
piston type for working in horizontal / vertical
position, screwed cover
ASTM A351 Gr. CF8, API STD 594 type B, Trim
12, flanged cover, swing type and stop integrated
to the body that limits the opening of the disc..
ASTM A351 Gr. CF8, API STD 609 category B,
triple eccentricity, solid seal ring in one-piece,
integral seat to the body, metal-metal seal,
fireproof ISO 10497. Flanged body. The design
must comply with 8.2.1 and 8.10 of ET-204PEMEX-2012.
Gaskets
Gaskets
Gaskets
9.1
Spiro-metallic, with carbon steel (outer) centering
ring ASTM A36 / A36M: 2012 with anticorrosive
coating, flexible graphite filling (asbestos-free),
winding tape and inner ring ASTM A240 type 304,
ASME B16.20 for ASME B16.5 flanges, bore equal
to the inside diameter of the pipe
Bolts
ASTM A193 Gr. B8 Class 2, threads ASME
B1.1 class 2A
ASTM A194 Gr. 8, threads ASME B1.1 class
2A
Studs
Nuts
miscellaneous
Eight Figures
(integral)
11.1
20 to 300
(3/4 to 12)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
150
RF
ASTM A240 Type 304, ASME B 16.48
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A05T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
“T” type filters
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 103 de 214
“Dos Bocas New Refinery, Tabasco”
80 to 300
(3 to 12)
Branch Connections
Schedule same as
the pipe.
Weldable
ASTM A351 Gr. CF8, seamless, weldable
ends.
Graph T-A04T3 Branch connections
Notes:
1.1
1.2
2.1
2.2
3.1
3.2
4.1
4.2
4.5
5.1
5.3
6.1
6.2
6.3
7.1
7.2
7.3
7.4
8.1
8.3
8.4
8.6
For the Operating limits conditions of the service and Pressure and Temperature Limits, according to the Range of the
Flange Class (ASME B16.5) see PMS index. However, it may be limited for certain components allowed by this
specification. Refer to pressure and temperature restrictions recommended by the manufacturer..
The sacrificial thickness for permissible corrosion effects, which can be tolerated during the life of these parts, is
included in the wall thickness assigned by this specification to the pipe, fittings and accessories.
DN 20 (NPS ¾) is the minimum allowed diameter in pipes.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress
analysis.
b. For pipes installed in pipe racks (raised frames) and above ground sleepers the minimum acceptable length of the
pipe is 12 m.
The threaded joints must be NPT (ASME B1.20.1) and the thread must be sealed with welding, except where cap
plugs are installed.
a. In the Sockets, the end of greater diameter is restricted to DN 100 (NPS 4) and the Schedule must be equal to that
of the pipe to be welded. In the reduced part, the thickness or Schedule must be equal to the diameter of the pipe
of this specification.
b. Threaded end Sockets for use of pressure taps / nozzles (pressure transmitters and pressure gauges) and
threaded joints must be sealed with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap Plugs for ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps allowed in unused openings of DN 20 to DN 50 (NPS ¾ to 2) are allowed, as in orifice plate holder
flanges, must be sealed with welding after installation.
Prohibited the use of pipe connections or field fabricated fittings such as wedge plugs or "fish mouth" and flat caps. All
the Branches should be built with factory manufactured accessories.
Eccentric reduction with flat face up for pump suction (do not use concentric reduction).
a. Welding of the reinforced connectors to the head must be fully penetrated according to ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated in
the specification is the branch.
The use of integrally reinforced Threaded Outlet connector is limited for purges and vents that must be removed after
the hydrostatic or pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed
with welding. Purges and vents that are required during startup, operation or maintenance must be Nipple Outlet or
Nipple pipette..
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, weld box
welds should be inspected, according to the percentage indicated in the pipe specification and index of pipe materials.
Welding box flanges must correspond to the pipeline Schedule.
Welding neck flanges must have the same Schedule to the pipeline to which they are to be joined..
The orifice plate holder flanges and pipe flanges to be joined must have the same bore and thickness. Before welding,
the flange must be aligned to the tube and there should be no steps. After welding, the inner weld (mirror finish) must
be ground and polished, there should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar
plugs) must be sealed with welding
For long neck flanges for thermowell taps / nozzles, the inner diameter must be specified to match the outer diameter
of the thermowell and ensure insertion, Class 300 is the minimum allowed.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter on
the valve body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (bolts and nuts) must be of the proper specification to the valve body material.
e. Handwheels of all valves must be solid, hollow handwheels are not allowed.
DN 50 gate valves (NPS 2) with flanged ends, the flanges and body must be in one piece (not welded), they are only
allowed in equipment nozzles for instrument such as magnetic and optical level indicators, level transmitters.
The check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of fluids to
protect upstream installations.
It is forbidden to use ear valves or bipartition disc type installed between flanges.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
8.20
8.21
9.1
11.1
HEAD DIAMETERS
12.1
Rev. 0
Sheet 104 de 214
“Dos Bocas New Refinery, Tabasco”
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must be
manufactured in one piece.
The packing of the packing box must be graphite for cryogenic and fire-resistant service..
For use on long neck flanges and hole plate holder flanges.
The suction and discharge of pumps, inlet and outlet lines of heat exchangers and compressors, in battery limits, direct
fired heaters, filters that use filter elements of cartridges and all that equipment that are required to isolate by frequent
maintenance, must have permanent reversible figures eight.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to
be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, figures eight must be included, additional to valves, to ensure
their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
DM
(mm)
20
25
40
50
80
100
150
NPS
(in)
3/4
1
1 1/2
2
3
4
6
200
250
300
350
400
450
500
600
8
10
12
14
16
18
20
24
NPS
(in)
DM
(mm)
TC - Wel di ng Box "T"
TC
TRC= Wel di ng Box Reduced "T"
TC
TRC
T = Stra i ght "T" wi th bevel ed ends
TC
TR = Reduced "T wi th bevel ed ends . Stra i ght "T" + Reduction or, Reduced "T" + Reduction.
TC
ABN
TRC = Stra i ght "T" + Concentri c Reduction
T W = Wel dol et
T
ABN = Connector Integra l l y Rei nforced "Ni pol et" or "Ni ppl e Pi pete"+ va l ve a s a n
T option to the "Ni pol et" or, "Ni ppl e Pi pete", Sockol et + Ni ppl e
*
**
* Al l bra nches mus t be bui l t wi th fa ctory ma nufa ctured a cces s ori es
** Thi s s peci fi ca tion prohi bi ts ma ki ng di rect i ns erts or wi th rei nforcement pl a tes ,
T
T
OR
TR
T
W
or
1/16" Ga p
Option
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
10
12
connections (Stra i ght T, Reduced T, Stra i ght T + Reductions ) or, ful l y rei nforced
T connectors (Wel dol et, Ni pol et or Ni ppl e Pi pette) s houl d i nva ri a bl y be us ed.
T
T
TRC RC
T
T
14
16
18
20
24
100 150 200 250 300 350 400 450 500 600
BRANCH DIAMETERS
GRAPH T-A04T3 BRANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Components
Piping Material Specification
Pressure and Temperature
Limits
1370 kPa@ 90°C
See Note 1.1
Material HDPE
Valve
See Note 1.2
Thermal Treatment and Efforts
Internals
Relief N.A.
Allowable Corrosion:
0 mm (0,00 in)
Sheet 105 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial Installations
Service: Potable water
(underground)
Rev. 0
Notes
Diameter
DN (NPS)
2.2
2.5
2.10
2.11
80 to 600
(3 to 24)
Thickness (in) or
Minimum Schedule /
Class
Ends
T-A04T8
RT
N.A.
NDT
Additional
N.A.
Class 150
FF Face
Observations: To join by the electrofusion and / or
thermo-fusion process.
Description
Pipeline
Pipe
Connections
90° Elbow
45° Elbow
Straight “T”
Concentric
Reduction
Socket
Reduction
Reduced “T” or
fabricated from
pipe + saddle.
80 to 200
(3 to 8)
250 to 600
(10 to 24)
80 to 200
(3 to 8)
250 to 600
(10 to 24)
90° Elbow
45° Elbow
Straight “T”
Reduced “T”
Concentric
Reduction.
Transition Nipple
200
200
250 to 900
(10 to 24)
200
100 to 600
(4 to 24)
200
3.2
3.3
3.8
80 to 600
(3 to 24)
200
3.6
80 to 600
(3 to 24)
200
50 to 300
(2 to 12)
200
80 to 600
(3 to 24)
200
Reducing Saddle
Electrofusion
Coupling
RD 9
Cap Plug
Flat
Flat
HDPE PE 4710/3408, ASTM D 3350
Classification of cell PE 345464-C / 445574-C,
Approval AWW C901, AWWA C906, NSF61,
ASTM D3035 / ASTM F714.
HDPE PE 4710/3408, ASTM D 3350 Cell
Classification PE 345464-C / 445574-C,
Approval AWW C901, AWWA C906, NSF61,
ASTM D3035 / ASTM F714. From 3 to 8 in: one
piece, 10 to 24 in: at least in three segments.
HDPE PE 4710/3408, ASTM D 3350
Classification of cell PE 345464-C / 445574-C,
Flat
Approval AWW C901, AWWA C906, NSF61,
ASTM D3035 / ASTM F714.
HDPE PE 4710/3408, ASTM D 3350
Classification of cell PE 345464-C / 445574-C,
Insert Type Approval AWW C901, AWWA C906, NSF61,
ASTM D3035 / ASTM F714.
HDPE PE 4710/3408, ASTM D 3350 Cell
Classification PE 345464-C / 445574-C, AWWA
Approval C901, NSF61, ASTM D3035 / ASTM
F714.
HDPE PE 4710/3408, ASTM D 3350 Cell
Classification, PE 345464-C / 445574-C, FM
Insert Type
Approval - 1613 CLASS 200, ASTM D3035 /
ASTM F714, ASTM F1055, AWWA C906, DIN
16 963, Part 5 & Part 7, and also EN 1555-3 & 4;
EN 12201-3 & 4.
HDPE - HDPE PE 4710/3408, ASTM D 3350 Cell
Flat / CS Classification PE 345464-C / 445574-C, ASTM
– Beveled D3035 / ASTM F714.
to cut
Insert Type PEAD PE 4710/3408, ASTM D 3350 Cell
(socket) / Flat Classification PE 345464-C / 445574-C, AWWA
Approval C901, NSF61, ASTM D3035 / ASTM
ends
F714.
Insert Type
Flanges
Long Neck Flange
Adapter
4.1
4.3
4.4
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
F.F.
HDPE PE 4710/3408, ASTM D 3350 PE cell
classification 345464-C / 445574-C, AWWA
approval C901, NSF61, ASTM D3035 / ASTM
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 106 de 214
“Dos Bocas New Refinery, Tabasco”
F714.
Metal counter
flange
Gaskets
Gaskets
Bolts
Bolts
5.1
5.2
Nuts
5.1
Branch
Connections
80 to 600
(3 to 24)
200
F.F.
316 Stainless Steel, ASTM 351 CF8M ASME B
16.5 Class 150.
80 to 600
(3 to 24)
150
F.F.
PTFE 3,2 mm (1/8 in) thickness. F.F
80 to 600
(3 to 24)
80 to 600
(3 to 24)
11.1
ASTM A193 Gr. B7, Threaded ASME B1.1 class 2A,
ASTM A194 Gr. 2H, ASME B1.1 class 2A,
See Graph T-A04T8 of Branch Connections
included in this pipe specification.
Notes:
1.1
1.2
1.3
2.2
2.5
2.10
2.11
3.2
3.3
3.6
3.8
4.1
4.3
4.4
5.1
5.2
11.1
For the Service Operating Limits Conditions and Pressure and Temperature Limits, it may be limited for certain
components allowed by this specification. Refer to pressure and temperature restrictions recommended by the
manufacturer. Pipe, fittings and fittings must comply with Factory Mutual Class 1613 approval..
The personnel who make the connections between pipes and polyethylene connections must be trained and validated
by the manufacturer and / or authorized representative of the electrofusion components. In the case of thermo-fusion,
the personnel performing the thermo-fusion must prove their training by the manufacturer of thermo-fusion equipment.
For this service, this Specification of Materials for Pipeline, applies only under the express request of Pemex in the
Project or by specification of the Technologist or Licensor. This Specification should be worked with paragraph 8.1.1.8
of this TS.
The joining method for pipes and connections must be electrofusion and comply with ASTM F 1290 and in the same
way the Thermo-fusion method must be in accordance with ASTM.
The installation method of the HDPE pipe must be in accordance with ASTM D 2321.
The pipe must comply with NMX-E-018-SCFI-2002.
Pipe manufactured by extrusion process, the pipe manufacturer must be integrated with the resin manufacturer in
order to ensure complete traceability of the pipe and the resin with which it was manufactured..
The equipment and connections / couplings for the electrofusion joints must be from the same manufacturer. The
electrofusion equipment must have traceability and documentation functions, and GPS traceability for the location of
the junction..
Electrofusion couplings must exceed the insertion length established in standards EN 1555-3 and EN 12201-3 in
order to ensure the integrity of the electrofusion joint..
The transition of the HDPE-CS pipe must be horizontal and underground, to protect the HDPE from fire or mechanical
damage.
In order to ensure the integrity of the joint, the electrical resistance in the electrofusion couplings must be superficial
(exposed) and not immersed in the coupling plastic.
The dimensions of the flanges must be such that they allow coupling to ASME B16.5 flanges.
When the HDPE flange alternative is used, these must be housed in sectional valve registers constructed of concrete
and metal or fiberglass cover, with sufficient space to allow maneuvering for installation and tightening of the studs 70
cm of clear clearance between the tangent of the flange and the walls of the register, 2 times the length of the stud
between the external and the register to allow the entry and exit of the stud and with 30 cm of the lower part of the
flange to the floor, the cover must rest on the walls that must protrude from the floor so as not to allow the ingress of
water to the register, the indicated dimensions are minimum values.
When HDPE flanges are used in sectioning valves, each valve must be supported within the register so as not to
transmit stress to the plastic material caused by the weight of the valve or by efforts transmitted by the opening and
closing of the valve.
The tightening torque of the flange hardware must be based on data from the flange manufacturer.
The length of the studs should be such that the tip length at each end is not covered by the nuts and protrude at least
two threads of the thread.
Graph T-A04T8 for Head-Branch Connection indicates the recommended and minimum by design.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 107 de 214
“Dos Bocas New Refinery, Tabasco”
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Service: Diesel,
Component
Sheet 108 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
Allowable Corrosion:
1.6 mm (0.0625 in)
See Note 1.2
See
Notes
Rev. 0
Pressure and Temperature
Limits
840 kpa@ 350°C See Note 1.1
Material: CS
Valve
Thermal Treatment and Efforts
Internals
Relief N.A.
Trim 5
Diameter
DN (NPS)
Thickness (in) or
Minimum Schedule /
Class
T-A05T1
RT
10 %
NDT
10 %
Class 150
RF Face
Welding Box welding in DN 50 (NPS 2) and
smaller; Butt welds DN 80 (NPS 3) and
larger.
Ends
Description
Piping
2.1
Pipe
2.2
2.3
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
650 to 900
(26 to 36)
80
Flat
Standard
Beveled
ASTM A106 Gr. B
To be calculated
by Contractor
Beveled
ASTM A672 Gr. C60 (ASTM Plate A516 Gr.
60), Class 12, with seams Straight
longitudinal, EFW, Ex = 1.0
Nipples
Flat /
Threaded
Flat / Flat
Nipple (in line)
3.1
20 to 50
(3/4 to 2)
80
Socket conc.
Socket exc.
3.2
20 to 80
(3/4 to 3)
Schedule same as the
pipe.
20 to 50
(3/4 to 2)
3000
Welding
Box
ASTM A105, ASME B16.11
3000
Threaded
ASTM A105, ASME B16.11, thread ASME B1.20.1
Connections
90 ° elbow
45 ° Elbow
Straight “T”
Reduced “T”
Coupling
Reduced
Coupling
Cap Plug
Solid Bar Plug
Street Elbow
Elbow 90 ° long
radius
45 ° Elbow
Straight “T”
Reduced “T”
Concentric
Reduction
Eccentric
Reduction
Cap Plug
4.1
4.2
20 to 50
(3/4 to 2)
4.5
20 to 50
(3/4 to 2)
4.5
20 to 50
(3/4 to 2)
5.1
80 to 600
(3 to 24)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A106 Gr. B
Thread / Bevel
ASTM A234 Gr. WPB, MSS SP-95
Flat / Bevel
Threaded
ASTM A105, ASME B16.11, thread ASME B1.20.1
3000
Threaded
ASTM A105, ASME B16.11, threads (female - male
ASME B1.20.1)
Schedule same as the
pipe.
Beveled
ASTM A234 Gr. WPB, ASME B16.9
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Rev. 0
Sheet 109 de 214
“Dos Bocas New Refinery, Tabasco”
Elbow 90 ° long
radius
45 ° Elbow
Straight “T”
5.1
650 to 900
Reduced “T”
5.2
(26 to 36)
Concentric
Reduction
Eccentric
Reduction
Cap Plug
Integrally Reinforced Connections
6.1
20 to 50
Threaded Outlet
6.2
(3/4 to 2)
Schedule same as
the pipe.
Beveled
ASTM A234 Gr. WPBW, with seams
longitudinal straight, Ex = 1.0, ASME B16.9
3000
Threaded
ASTM A105, MSS SP-97
6.1
6.3
20 to 50
(3/4 to 2)
3000
Welding
Box
ASTM A105, MSS SP-97
Lateral Outlet
6.1
6.3
20 to 50
(3/4 to 2)
3000
Welding
Box
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
Butt Weld Outlet
6.1
Schedule same as the
pipe.
Beveled
ASTM A105, MSS SP-97
Nipple Outlet o
Nipple pipette
Flanges
Welding Box
Flanges
Welding Neck
Flanges
Welding Neck
Flanges
6.1
6.3
3000
Flat
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
150
RF
ASTM A105 ASME B16.5
150
RF
150
RF
150
RF
ASTM A105 ASME B16.5.
150
RF
ASTM A105 ASME B16.47TO(MSS-SP44).
Socket Weld
Outlet
7.1
7.2
7.2
Blind Flanges
Blind Flanges
Orifice Plates
Holder Flanges
80 to 350
(3 to 14)
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
650 to 750
(26 to 36)
20 to 600
(3/4 to 24)
650 to 900
(26 to 36)
ASTM A105 ASME B16.5, Schedule and bore
equal to that of the pipe.
ASTM A105 ASME B16.47A (MSS-SP44),
Schedule and bore equal to that of the pipe.
7.3
50 to 600
(2 to 24)
300
RF
ASTM A105, ASME B16.36, weldable neck,
bore equal to the inside diameter of the pipe.
Long Neck
Flanges
Valves
7.4
25 to 50
(1 to 2)
300
RF
ASTM A105, ASME B16.5.
Gate
Valves
8.1
20 to 50
(3/4 to 2)
800
Welding
Box
Gate
Valves
Gate
Valves
8.1
8.3
80 to 600
(3 to 24)
150
RF
8.1
650 to 900
(26 to 36)
150
RF
8.2
80 to 600
(3 to 24)
150
RF
Gate Valves
Single
expansion,
(double disc)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A105, Trim 5, OS&Y, ISO 15761, fixed
handwheel, ascending stem, bolted bonnet,
solid gate.
ASTM A216 Gr. WCB, Trim 5, OS&Y, ISO
10434, Fixed handwheel, rising stem, flanged
bonnet, solid gate.
ASTM A216 Gr. WCB, Trim 5 (see ISO
10434), OS&Y, ASME B16.34, ASME
B16.47A, fixed handwheel, rising stem,
flanged bonnet, solid or flexile gate for clean
oils.
ASTM A216 Gr. WCB, Trim 5, parallel seats,
protruding rod, outer thread and yoke, bolted
bonnet, operated by handwheel, ISO 10434.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A05T1 Hoja 2 de 5
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Project:
Gate Valves
double
expansion
80 to 900
(3 to 36)
150
RF
Gate Valves
Solid sliding
parallel faces
8.2
80 to 900
(3 to 36)
150
RF
Globe Valves
8.1
20 to 50
(3/4 to 2)
800
Welding
Box
Globe Valves
8.1
80 to 300
(3 to 12)
150
RF
Check
Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
Welding
Box
Check
Valves
8.1
8.4
8.6
80 to 600
(3 to 24)
150
RF
150
RF
150
RF
Butterfly Valves
8.1
8.2
8.5
8.1, 8.6
8.20
8.21
Rev. 0
Sheet 110 de 214
“Dos Bocas New Refinery, Tabasco”
8.2
Ball Valves
Trunion mounted
ET-032-PEMEX-2019
18/03/2019
80 to 900
(3 to 36)
80 to 600
(3 to 24)
ASTM A216 Gr. WCB, full pass, design
requirements, materials, gate coatings, seats and
stem and gear operator tests and documentation
based on ET-211-PEMEX-2019..
ASTM A216 Gr. WCB, full pass, design
requirements, materials, seat insert, hatch
covers, seats and stem and gear operator tests
and documentation based on ET-211-PEMEX2019..
ASTM A105, Trim 5, OS&Y, ISO 15761,
handwheel and rising stem, screwed bonnet.
ASTM A216 Gr. WCB, Trim 5 conforming to API
STD 623, OS&Y, ASME B16.34, handwheel and
rising stem, flanged bonnet.
ASTM A105, Trim 5, ISO 15761, ball or piston
type for working horizontally / vertically, screwed
cover.
ASTM A216 Gr. WCB, Trim 5, API STD 594 type
B, flanged cover, swing type and stop integrated
to the body that limits the opening of the disc..
ASTM A105 or ASTM A216 Gr. WCB, designed,
manufactured and tested according to ISO
14313 and requirements of ET-211-PEMEX2019, fireproof API SPC 6FA, ISO 10497, full
step, bolted or welded body, soft seal, with limits
for seat temperature...
ASTM A216 Gr. WCB, triple eccentricity, solid
one-piece seal ring, integral body seat, metalmetal seal, API 609 category B design, ISO
10497 fireproof. Flanged body. The design must
comply with 8.2.1 and 8.10 of ET-204- PEMEX2019..
Gaskets
20 to 600
(3/4 to 24)
Gaskets
Gaskets
Gaskets
9.1
150
RF
650 to 900
(26 to 36)
150
RF
25 to 600
(1 to 24)
300
For orifice pate holder
flanges
RF
Bolts
Studs
Nuts
Miscellaneous
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Spiro-metallic, with centering ring (external) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of 304
Stainless Steel, ASME B16.20 for flanges ASME
B16.5, bore equal to the inside diameter of the
pipe.
Spiro-metallic, with centering ring (external) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of type
304 Stainless Steel, ASME B16.20, for ASME
B16.47A flanges (MSS-SP44), bore equal to the
inside diameter of the pipe.
Spiro-metallic, with centering ring (external) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of Steel
Type 304 stainless, ASME B16.20 for ASME
B16.5 flanges, bore equal to the inside diameter
of the pipe.
ASTM A193 Gr. B7, threads ASME B1.1 class 2A.
ASTM A194 Gr. 2H, threads ASME B1.1 class 2B
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A07T1 Hoja 1 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Eight Figures
(integral)
Eight Figures
(blind joint and
spacer
separated)
12.1
“Y” Type filters
12.1
Sheet 111 de 214
“Dos Bocas New Refinery, Tabasco”
20 to 300
(3/4 to 12)
“T” Type filters
Rev. 0
150
RF
ASTM A515 Gr. 70, ASME B 16.48
350 to 900
(14 to 36)
150
RF
ASTM A515 Gr. 70, ASME B 16.48
80 to 600
(3 to 24)
20 to 50
(3/4 to 2)
Schedule same as the
pipe.
Weldable
ASTM A234 Gr. WPB, S/C
600
Welding
Box
ASTM A105, ends ASME B16.11
Branch Connections
Graph T-A05T1 Branch Connections
Notes:
The pressure and temperature limits of this specification are based on the range of the corresponding flange class,
indicated in the ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure
1.1
and temperature restrictions recommended by the manufacturer should be consulted.
The sacrificial thickness is included in the wall thickness that is assigned to the pipe, connections and fittings for this
1.2
specification, for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
2.1
In pipes, DN 20 (NPS 3/4) is the minimum diameter allowed.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress analysis.
2.2
b. For pipes installed in pipe racks (raised frames) and above ground sleepers the minimum acceptable length of the pipe is
12 m.
All seam pipes and connections, which are indicated in this specification, the weld must be longitudinal straight and 100
2.3
percent radiographed.
3.1
Threaded joints must be NPT (ASME B1.20.1) and the tread must be sealed with welding, except where cap plugs are
installed.
a. In the sockets the end of greater diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS 2); the
3.2
Schedule must be equal to that of the pipe to be welded.
b. The threaded end sockets for use of pressure taps / nozzles (pressure transmitters and gauges), the threaded joints
must be sealed with welding.
4.1
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
4.2
Cap Plugs for ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
4.5
b. Solid bar caps are only allowed in openings without the use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate holder
flanges, seal the thread with welding after installation.
It is forbidden to use pipe connections or field fabricated fittings such as wedges or “fish mouths” and flat caps. All the
5.1
Branches must be built with factory manufactured accessories.
a. Welding of reinforced connectors to the head must be fully penetrated in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated in the
6.1
specification is the branch.
The integrally reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the
hydrostatic or pneumatic test. Once the test is completed, they must be closed with a solid bar plug and the tread sealed
6.2
with welding. Purges and vents that are required during startup, operation or maintenance must be Nipple Outlet or Nipple
pipette.
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, weld box welds
6.3
should be inspected, according to the percentage indicated in the pipe specification and index of pipe materials.
7.1
Welding box flanges must correspond to the Pipeline Schedule.
7.2
Weld neck flanges must have the same pipeline Schedule to which they are to be attached.
The orifice plate holder flanges and pipe flanges to which they are to be attached must be of the same bore and thickness.
7.3
Before welding, the flange must be aligned to the tube and there should be no steps. After welding you must grind and polish
the inner weld (mirror finish), there should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar
plugs must be sealed with welding.
Long neck flanges for thermowell taps / nozzles, the inner diameter must be specified to relate it to the outer diameter of the
7.4
thermowell and ensure insertion, the minimum allowed Class is 300.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5, and the larger
ones with ASME B16.47 Series A.
8.1
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter on the
valve body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (bolts and nuts) must be of the appropriate specification and compatible with the material of the valve
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A07T1 Hoja 1 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
8.2
8.3
8.4
8.5
8.6
8.2
0
8.2
1
9.1
Sheet 112 de 214
“Dos Bocas New Refinery, Tabasco”
body.
Handwheels of all valves must be solid, hollow handwheels are not allowed.
These valves: single expansion gate valve, parallel disc gate (double expansion), sliding (sided) parallel), ball mounted on
trunnion and wafer type check valves, are only allowed upon express request of Pemex in the Project or by specification of
the Technologist or Licensor.
DN 50 gate valves (NPS 2) with flanged ends, flanges and body must be in one piece (not welded), they are only allowed in
equipment nozzles for instrument sockets such as magnetic and optical level indicators , level transmitters.
The check valves should be installed horizontally with the lid on top, to ensure the closure of the gate and prevent the return
of fluids.
a. Ball-type valve mounted on trunnion, energized seats, bidirectional seats, soft seal (nylon or PTFE), Internal: carbon steel
sphere with electrolytic nickel coating 0.003 in, ASTM A322 Gr. 4140 stem (UNS G41400), AISI 410SS stainless steel
seats, soft seal polyamide (nylon) [120 ° C (248 ° F)] or PTFE 180 ° C (356 ° F). [180 ° C (356 ° F)].
b. Welded body valves must be inspected by 100 percent radiography and / or ultrasound according to ASME Section VIII
division 1.
c. Valves from DN 50 A DN 100 (NPS 2 to NPS 4) operated by handwheel, in DN 150 (NPS 6) and larger must be supplied
with double speed gear operator.
The use of ear valves or bipartition disc type installed between flanges is prohibited.
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must be manufactured in
one piece..
The packing of the packing box must be graphite for cryogenic and fire-resistant service.
For use on long neck flanges and hole plate holder flanges.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, eight figures must be included in addition to the blocking valves, to
ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
HEAD DIAMETERS
12.
1
Rev. 0
DM
(mm)
20
25
40
50
80
100
150
NPS
(in)
3/4
1
1 1/2
2
3
4
6
200
250
300
350
400
450
500
600
650
700
750
800
900
8
10
12
14
16
18
20
24
26
28
30
32
36
NPS
(in)
DM
(mm)
TC - Wel di ng Box "T"
TC
TRC= Wel di ng Box Reduced "T"
TC
TRC
T = Stra i ght "T" wi th bevel ed ends
TC
TR = Reduced "T" wi th bevel ed ends . Stra i ght "T" + Reducti on or, Reduced "T" + Reducti on.
TC
ABN
T
TRC = Stra i ght "T" + Concentri c Reducti on
W = Wel dol et
T
*
T
**
ABN = Connector Integra l l y Rei nforced "Ni pol et" or "Ni ppl e Pi pette"+ va l ve a s a n opti on to
the "Ni pol et" or, "Ni ppl e Pi pete", Sockol et + Ni ppl e
* Al l bra nches mus t be bui l t wi th fa ctory ma nufa ctured a cces s ori es
** Thi s s peci fi ca ti on prohi bi ts ma ki ng di rect i ns erts or wi th
T
T
OR
rei nforcement pl a tes , connecti ons s houl d i nva ri a bl y be us ed
(Stra i ght "T", Reduced "T", Stra i ght "T + Reducers ) or, i ntegra l l y
rei nforced connectors (Wel dol et, Ni ppol et or Ni ppl e Pi pette).
T
W
T
T
T
1/16" Ga p
TR
T
T
or
Ni ppol et Opti on
T
T
TRC
T
T
T
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
10
12
14
16
18
20
24
26
28
30
32
36
100 150 200 250 300 350 400 450 500 600 650 700 750 800 900
BRANCH DIAMETERS
GRAPH T-A05T1 - BRANCH CONNNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A07T1 Hoja 1 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Allowable Corrosion:
3.2 mm (0.125 in)
See Note 1.2
Component
Sheet 113 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
Service: Sour Gas (Partial
Pressure of H2S greater to
0.05 Psia).
See
Notes
Rev. 0
T-A07T1
Pressure and Temperature Limits
979 kpa@ 75°C
See Note 1.1
Material: CS “Passivated”
Thermal Treatment and
Valve Internals
Efforts Relief YES
Trim 12
See Note 1.6
Thickness (in) or
Diameter
Ends
Minimum
DN (NPS)
Schedule / Class
NDT
33 %
See Note 6.2
RT
33 %
Class 150
RF Face
Butt welds DN 25 (NPS 1) and larger
Description
Piping
120
Pipe
2.2
25 to 50
(1 to 2)
80 to 600
(3 to 24)
80
Beveled
ASTM A106- Gr. B
Beveled
ASTM A106 Gr. B
Beveled
ASTM A234 Gr. WPB, ASME B16.9
Threaded
ASTM A105, ASME B16.11,thread ASME B1.20.1
STD
Nipples
Nipple
Connections
Elbow 90 °
long radius
45 ° Elbow
Straight “T”
Reduced “T”
Concentric
Reduction
Eccentric
Reduction
Cap Plug
120
5.1
25 to 50
(1 to 2)
25 to 600
(1 to 24)
Cap Plug
Solid Bar Plug
4.2
25 to 50
4.3
(1 to 2)
Integrally Reinforced Connections
25 to 50
Lateral Outlet
6.1
(1 to 2)
Butt Weld Outlet
6.1
80 to 250
(3 a 10)
Nipple Outlet o
Nipple pipette
6.1
25 to 50
(1 to 2)
Flanges
Welding Neck
Flanges
Blind Flanges
7.2
25 to 600
(1 to 24)
25 to 600
(1 to 24)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Schedule same as
the pipe.
Schedule
same as the
pipe.
6000
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4), ISO 15156-2
Schedule same
as the pipe.
Beveled
ASTM A105, MSS SP-97.
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4).
150
RF
ASTM A105, ASME B16.5, Schedule and bore
same as the pipe.
150
RF
ASTM A105, ASME B16.5.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A07T1 Hoja 1 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Orifice Plate
Holder Flanges
7.3
Long Neck Flanges
7.4
Rev. 0
Sheet 114 de 214
“Dos Bocas New Refinery, Tabasco”
50 to 600
(2 to 24)
25 to 50
(1 to 2)
300
RF
ASTM A105, ASME B16.36, welding neck, bore same
as the pipe.
300
RF
ASTM A105, ASME B16.5.
Valves
Gate Valves
8.1
8.9
25 to 50
(1 to 2)
800
Beveled
Gate Valves
8.1
8.3
80 to 600
(3 to 24)
150
RF
Globe Valves
8.1
8.9
25 to 50
(1 to 2)
800
Beveled
Globe Valves
8.1
80 to 300
(3 to 12)
150
RF
Check
Valves
8.1
8.4
8.9
25 to 50
(1 to 2)
800
Beveled
Check
Valves
8.1
8.4
80 to 600
(3 to 24)
150
RF
8.1, 8.6
8.20
8.21
80 to 600
(3 to 24)
150
RF
25 to 600
(1 to 24)
150
25 to 600
(1 to 24)
300
For Orifice Plate
Holder Flanges
Butterfly Valves
ASTM A105, Trim 12, OS&Y, ISO 15761,
fixed handwheel, rising stem, screwed
bonnet, solid gate..
ASTM A216 Gr. WCB, Trim 12, OS&Y, ISO
10434, Fixed handwheel, rising stem, flanged
bonnet, solid gate..
ASTM A105, Trim 12, OS&Y, ISO 15761,
handwheel and rising stem, bolted bonnet.
ASTM A216 Gr. WCB, Trim 12 conforming to
API STD 623, OS&Y, ASME B16.34,
handwheel and rising stem, flanged bonnet.
ASTM A105, Trim 12, ISO 15761, ball or
piston type for horizontal / vertical position,
cover screwed.
ASTM A216 Gr. WCB, Trim 12, API 594 type
B, flanged cover, swing type and stop
integrated to the body that limits the opening
of the disc.
ASTM A216 Gr. WCB, triple eccentricity, solid
one-piece seal ring, integral body seat, metalmetal seal, API 609 category B design, ISO
10497 fireproof. Flanged body. The design
must comply with 8.2.1 and 8.10 of ET-204PEMEX-2019.
Gaskets
Gaskets
9.1
RF
Spiro-metallic, with centering ring (external)
made of carbon steel ASTM A36 / A36M:
2012 with anticorrosive coating, flexible
graphite filling (asbestos-free), winding and
internal ring of 316 Stainless Steel, ASME
B16.20, bore equal to the inside diameter of
the pipe.
Bolts
Studs
Nuts
Miscellaneous
Eight Figures
(integral)
25 to 300
(1 to 12)
150
RF
ASTM A515 Gr. 70, ASME B 16.48
Eight Figures (blind
joint and spacer
separated)
350 to 600
(14 to 24)
150
RF
ASTM A515 Gr. 70, ASME B 16.48
80 to 600
(3 to 24)
Schedule same as
the pipe.
Beveled
“T” Type filters
ASTM A193 Gr. B7M, threads ASME B1.1 class 2A.
ASTM A194 Gr. 2HM, threads ASME B1.1 class 2B
12.1
Branch Connections
ASTM A234 Gr. WPB, S/C
Graph T-A07T1 Branch Connections
Notes:
1.1
The pressure and temperature limits of this specification are based on the range of the corresponding flange class,
indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure
and temperature restrictions recommended by the manufacturer should be consulted.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
1.2
1.6
2.2
4.2
4.3
5.1
6.1
6.2
7.2
7.3
7.4
8.1
8.3
8.4
8.6
8.9
8.20
8.21
9.1
12.1
120
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 115 de 214
“Dos Bocas New Refinery, Tabasco”
In the wall thickness that is assigned to the pipe, connections and fittings by this specification, the sacrificial
thickness is included, for the purposes of the permissible corrosion that can be tolerated during the life of these
parts.
Thermal Treatment and Efforts Relief in accordance with NACE MR0103, Applies in all welded joints.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress
analysis.
b. For pipes installed in pipe racks (raised frames) and above ground sleepers the minimum acceptable length of
the pipe is 12 m.
Cap Plug for terminal ends of purges and vents.
Welding for all threaded joints.
It is forbidden to use pipe connections or field fabricated fittings, such as wedges or “fish mouths” and flat caps. All
the Branches must be built with factory manufactured accessories.
a. Welding of reinforced connectors to the head must be fully penetrated in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated
in the specification is the branch.
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, welds
should be inspected, according to the percentage indicated in the pipe specification.
Weld neck flanges must have the same Schedule to the pipeline to which they are to be joined.
The orifice plate and holder flange and pipe to be joined must have the same bore and thickness. Before welding,
the flange must be aligned to the tube and there should be no steps. After welding, the inner weld (mirror finish)
must be ground and polished, there should be no restrictions, bumps or sinking. All threaded joints (nipples and
solid bar plugs) must be sealed with welding. ).
Long neck flanges for thermowell taps / nozzles, the inner diameter must be specified to relate it to the outer
diameter of the thermowell and ensure insertion, Class 300 is the minimum allowed.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter
on the valve body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (bolts and nuts) must be of the proper specification to the valve body material.
e. Handwheels of all valves must be solid, hollow handwheels are not allowed.
DN 50 gate valves (NPS 2) with flanged ends, the flanges and body must be in one piece (not welded), they are
only allowed in equipment nozzles for instrument sockets such as magnetic and optical level indicators, level
transmitters.
The check valves should be installed horizontally with the lid on top, to ensure the closure of the gate and prevent
the return of fluids.
It is forbidden to use ear valves or bipartition disc type installed between flanges.
The beveled ends must be of the same Schedule to the pipe, so that they are joined to the same thicknesses.
Butterfly valves are for isolation large inventory containers. When they are extended bonnet, this must be
manufactured in one piece.
The packing of the packing box should be graphite for cryogenic and fire-resistant service.
For use on long neck flanges and orifice plate holder flange.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment
to be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, eight figures, additional to the blocking valves, must be
included to ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
Pipe and nipples must be used in Schedule 160 for threaded connections in NPS 1 to 2.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
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Technical Specification
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Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 116 de 214
“Dos Bocas New Refinery, Tabasco”
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Sheet 117 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial Installations
Piping Material Specification
Service: Demineralized water
(from demineralization units to
deaerator)
Pressure and Temperature Limit
See Note 1.1
Material: Stainless Steel
Type T304
Efforts Relief N.A.
Allowable Corrosion: 0
mm (0 in)
See Note 1.2
Component
Notes
Rev. 0
Diameter
DN (NPS)
Valve Internals
Thickness (in) or
Minimum
Schedule / Class
Trim 12
Ends
T-A08T3
RT
5%
NDT
Additional See
Note 6.3
(Class 150)
RF Face
Welding Box welding in DN 50 (NPS 2)
and smaller Butt welds DN 80 (NPS 3)
and larger
Description / Material
Piping
Pipe
Tube
2.1
2.2
2.2
20 to 50
(3/4 to 2)
50
(2)
80 to 300
(3 to 12)
80S
Flat
40S
10S
Beveled
ASTM A312 Gr. TP304, ASME B36.19M,
seamless.
ASTM A312 Gr. TP304, ASME B36.19M,
seamless or with seams, with Ex= 0.85 as
minimum.
Nipples
Nipple (in line)
3.1
20 to 50
(3/4 to 2)
Schedule same as
the pipe
Socket conc. Socket
eccentric.
3.2
20 to 50
(3/4 to 2)
Schedule same as
the pipe
4.1
20 to 50
(3/4 to 2)
3000
Connections
90 ° elbow
45 ° Elbow
Straight “T”
Reduced “T”
Cross
Coupling
Reduced Coupling
Cap Plug
Solid Bar Plug
Street Elbow
Elbow 90 ° long
radius
45 ° Elbow
Straight “T”
Reduced :T”
Cap Plug
Conc Reduction
eccentric Reduction
4.2
4.5
4.5
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
3000
3000
For welding
/ thread +
welding
For welding
/ thread +
welding
Welding Box
ASTM A312 Gr. TP304, ASME B36.19M,
seamless.
ASTM A403 Gr. WP304-S, MSS-SP-95
ASTM A182 F304, ASME B16.11
ASTM A182 Gr. F304, ASME B16.11, thread
ASME B1.20.1
ASTM A182 Gr. F304, ASME B16.11, thread
Threaded
ASME B1.20.1
ASTM A182 Gr. F304, ASME B16.11, threads
Threaded
female – male ASME B1.20.1
Threaded
5.1
80 to 300
(3 to 12)
Schedule same as
the pipe
Beveled
ASTM A403 Gr. WP304-S, seamless, ASME
B16.9
5.1
5.3
80 to 300
(3 to 12)
Schedule same as
the pipe
Beveled
ASTM A403 Gr. WP304-S, seamless, ASME
B16.9
Integrally Reinforced Connections
Threaded Outlet
6.1
6.2
20 to 50
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
3000
Beveled –
ASTM A182 Gr. F304, MSS SP-97
Threaded
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
6.1
6.3
20 to 50
(3/4 to 2)
3000
Lateral Outlet
6.1
6.3
20 to 50
(3/4 to 2)
3000
Butt Weld Outlet
6.1
Nipple Outlet o
Nipple pipette
Flanges
Welding Box Flanges
6.1
6.3
Welding Neck
Flanges
7.2
Blind Flanges
Orifice Plate Holder
Flanges
Long Neck Flanges
7.3
7.4
Rev. 0
Sheet 118 de 214
“Dos Bocas New Refinery, Tabasco”
Socket Weld Outlet
7.1
ET-032-PEMEX-2019
18/03/2019
80 to 250
(3 to 10)
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
80 to 300
(3 to 12)
20 to 300
(3/4 to 12)
50 to 300
(2 to 12)
25 to50
(1 to 2)
Beveled –
Welding
Box
Beveled –
Welding
Box
ASTM A182 Gr. F304, MSS SP-97
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
10S
Beveled
ASTM A182 Gr. F304, MSS SP-97
3000
Beveled Flat
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
150
RF
150
RF
150
RF
300
RF
300
RF
ASTM A182 Gr. F304, ASME B16.5 Schedule
same as the pipe
ASTM A182 Gr. F304, ASME B16.5,
Schedule and bore same as the pipe
ASTM A182 Gr. F304, ASME B16.5.
ASTM A182 Gr. F304, ASME B16.36,
welding neck, bore same as the pipe
ASTM A182 Gr. F304, ASME B16.5.
Valves
Gate Valves
8.1
20 to 50
(3/4 to 2)
800
Gate Valves
8.1
8.3
80 to 300
(3 to 12)
150
Globe Valves
8.1
80 to 300
(3 to 12)
150
Check
Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
Check
Valves
8.1
8.4
80 to 300
(3 to 12)
150
8.1
8.6
8.20
8.21
80 to 300
(3 to 12)
150
Butterfly Valves
ASTM A182 Gr. F304, Trim 12, OS&Y, ISO
15761, Fixed handwheel, rising stem,
screwed bonnet, solid gate.
ASTM A351 Gr. CF8, API STD 603, Trim 12
conforming to ISO 10434, OS&Y, fixed
RF
handwheel, rising stem, flanged bonnet,
flexible wedge.
ASTM A351 Gr. CF8, ASME B16.34, Trim 12
conforming to API STD 623, OS&Y,
RF
handwheel and rising stem, flanged bonnet.
ASTM A182 Gr. F304, Trim 12, ISO 15761,
Welding Box
ball or piston type to work horizontally /
vertically, screwed cover.
ASTM A351 Gr. CF8, API STD 594 type B,
Trim 12, flanged cover, swing type and stop
RF
integrated to the body that limits the opening
of the disc.
ASTM A351 Gr. CF8, API STD 609 category
B, triple eccentricity, solid one-piece seal
ring, integral body seat, metal-metal seal,
RF
fireproof ISO 10497. Body flanged The
design must comply with 8.2.1 and 8.10 of
ET-204-PEMEX-2012..
Welding Box
Gaskets
Gasket
Gasket
9.1
20 to 300
(3/4 to 12)
150
RF
25 to 300
(1 to 12)
300
RF
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Spiro-metallic, with centering ring (external)
made of carbon steel ASTM A36 / A36M:
2012 with anticorrosive coating, flexible
graphite filling (asbestos-free), winding belt
and inner ring ASTM A240 type 304, ASME
B16.20 for ASME B16.5 flanges, bore equal
to the inside diameter of the pipe..
Spiro-metallic, with centering ring (external)
made of carbon steel ASTM A36 / A36M:
2012 with anticorrosive coating, flexible
graphite filling (asbestos-free), winding belt
and inner ring ASTM A240 type 304, ASME
B16.20 for ASME B16.5 flanges, bore equal
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 119 de 214
“Dos Bocas New Refinery, Tabasco”
to the inside diameter of the pipe.
Bolts
ASTM A193 Gr. B8 Class 2, threads ASME
B1.1 class 2A
ASTM A194 Gr. 8, threads ASME B1.1 class
2A
Bolts
Nuts
Miscellaneous
Eight Figures
(integral)
“T” Type filters
11.1
12.1
20 to 300
(3/4 to 12)
80 to 300
(3 to 12)
Branch Connections
150
RF
Schedule same as
the pipe
Weldable
ASTM A240 Type 304, ASME B 16.48
ASTM A351 Gr. CF8, seamless,
weldable ends.
Graph T-A08T3 Branch Connections
Notes:
1.1
1.2
2.1
2.2
3.1
3.2
4.1
4.2
4.5
5.1
5.3
6.1
6.2
6.3
7.1
7.2
7.3
7.4
8.1
For the Operating limits conditions of the service and Pressure and Temperature Limits, according to the Range of
the Flange Class (ASME B16.5) see PMS index. However, it may be limited for certain components allowed by this
specification. Refer to pressure and temperature restrictions recommended by the manufacturer.
The sacrificial thickness for permissible corrosion effects, which can be tolerated during the life of these parts, is
included in the wall thickness assigned by this specification to the pipe, connections and fittings.
DN 20 (NPS ¾) is the minimum allowed in pipes.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress
analysis.
b. For pipes installed in pipe racks (raised frames) and above ground sleepers, the minimum acceptable length of
the pipe is 12 m.
The threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where cap plugs are
installed.
a. In the Sockets, the end of greater diameter is restricted to DN 100 (NPS 4) and the Schedule must be equal to
that of the pipe to be welded. In the reduced part, the thickness or Schedule must be equal to the diameter of
the pipe of this specification.
b. Threaded end Sockets for use of pressure taps / nozzles (pressure transmitters and pressure gauges) and
threaded joints must be sealed with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap Plug for ends of purges and vents..
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps allowed in unused openings of DN 20 to DN 50 (NPS ¾ to 2) are allowed, as in orifice plate holder
flanges, seal with welding after installation.
The use of pipe connections or field fabricated fittings such as wedge plugs or "fish mouth" and flat caps is
prohibited. All branches must be built with factory manufactured accessories.
Eccentric reduction with flat face, facing up for pump suction (do not use concentric reduction).
a. Welding of the reinforced connectors to the head must be fully penetrated according to ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated
in the specification is the Branch.
The use of the integrally reinforced Threaded Outlet connector is limited for purges and vents that must be removed after the
hydrostatic or pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed with welding.
Purges and venting that is required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, welding
box welds should be inspected, according to the percentage indicated in the pipe specification and index of pipe
materials.
Welding box flanges must correspond to the pipeline schedule.
Weld neck flanges must have the same pipeline Schedule to which they are to be joined.
The orifice plate holder flanges and pipe to be joined must have the same bore and thickness. Before welding, the
flange must be aligned to the tube and there should be no steps. After welding, the inner weld (mirror finish) must
be ground and polished, there should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar
plugs) must be sealed with solder.
For long neck flanges for thermowell taps / nozzles, the inner diameter must be specified to match the outer
diameter of the thermowell and ensure insertion, Class 300 is the minimum allowed.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
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18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
8.3
8.4
8.6
8.20
8.21
9.1
11.1
HEAD DIAMETERS
12.1
Rev. 0
Sheet 120 de 214
“Dos Bocas New Refinery, Tabasco”
on the valve body: identification number, types of gasket in bonnet and in packing boxes.
d. All valve hardware must be of the proper specification to the valve body material.
e. Handwheels of all valves must be solid, hollow handwheels are not allowed
DN 50 gate valves (NPS 2) with flanged ends, the flanges and body must be in one piece (not welded), they are
only allowed in equipment nozzles for instrument sockets such as magnetic and optical level indicators, level
transmitters.
The check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of fluids to
protect upstream installations.
It is forbidden to use ear valves or bipartition disc type installed between flanges.
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must be
manufactured in one piece.
The packing of the packing box must be graphite for cryogenic and fire-resistant service.
For use on long neck flanges and orifice plate holder flanges.
The suction and discharge of pumps, inlet and outlet lines of heat exchangers and compressors, in battery limits,
direct fired heaters, filters that use filter elements of cartridges and all that equipment that are required to isolate by
frequent maintenance, must have permanent reversible eight figures.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment
to be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, eight figures, additional to blocking valves, must be included
to ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
DM
(mm)
20
25
40
50
80
100
150
NPS
(in)
3/4
1
1 1/2
2
3
4
6
200
250
300
350
400
450
500
600
8
10
12
14
16
18
20
24
NPS
(in)
DM
(mm)
TC - Welding Box "T"
T
TRC= Welding Box Reduced "T"
T
T = Straight "T" with beveled ends
TR
T
TR = Reduced "T with beveled ends. Straight "T" + Reduction or, Reduced "T" + Reduction.
T
ABN
TRC = Straight "T" + Concentric Reduction
T W = Weldolet
T
ABN = Connector Integrally Reinforced "Nipolet" or "Nipple Pipete"+ valve as an
T option to the "Nipolet" or, "Nipple Pipete", use Sockolet + Nipple.
*
**
* All branches must be built with factory manufactured accessories
** This specification prohibits making direct inserts or with reinforcement plates,
T
T
OR
TR
T
W
or
1/16" Gap
Option
4
6
8
10
12
connections (Straight T, Reduced T, Straight T + Reductions) or, fully reinforced
T connectors (Weldolet, Nipolet or Nipple Pipette) should invariably be used.
T
T
TRC
T
T
3/4
1
1 1/2
2
3
14
16
18
20
24
20
25
40
50
80 100 150 200 250 300 350 400 450 500 600
BRANCH DIAMETERS
GRAPH T-A08T3 BRANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Pressure and Temperature Limits
Service: Rich Amina / Spent
Amina
Component
Sheet 121 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial Installations
Allowable Corrosion:
3.2 mm (0.125 in)
See Note 1.2
Rev. 0
1830 kpa@ 80°C
See Note 1.1
Material: CS “Passivated”
Thermal Treatment and Efforts Relief
Yes, See Note 1.6
Notes
Diameter
DN (NPS)
Valve Internals
Trim 16
Thickness (in) or
Minimum
Schedule / Class
Ends
T-A09T1
RT
20 %
NDT
33 %
Class 150
RF Face
Butt welds for all diameters, except
where indicated
Description
Piping
120
Pipe
2.2
20 to 50
(3/4 to 2)
80 to 450
(3 to 18)
80
Beveled
Standard
Beveled
Schedule same as
the pipe
Beveled
ASTM A106- Gr. B
Nipples
Nipple
Connections
90 ° Elbow long
radius
45 ° Elbow
Straight “T”
Reduced “T”
Concentric
Reduction
Eccentric
Reduction
Cap Plug
Cap Plug
Solid Bar Plug
3.1
20 to 50
(3/4 to 2)
Beveled
4.1, 5.1
20 to 450
(3/4 to 18)
Schedule same as
the pipe
4.2
4.3
20 to 50
(3/4 to 2)
6000
Threaded
ASTM A105, ASME B16.11, thread ASME
B1.20.1.
600
0
Threaded
ASTM A105, MSS SP-97.
Integrally Reinforced Connections
6.1
20 to 50
Threaded Outlet
6.2
(3/4 to 2)
Lateral Outlet
6.1
6.3
Butt Weld Outlet
6.1
Nipple Outlet o
Nipple pipette
Flanges
Welding Neck
Flanges
6.1
6.3
7.2
Blind Flanges
Orifice Plates
Holder Flanges
Long Neck Flanges
ASTM A106 Gr. B
7.3
7.4
20 to 50
(3/4 to 2)
80 to 200
(3 to 8)
20 to 50
(3/4 to 2)
20 to 450
(3/4 to 18)
20 to 450
(3/4 to 18)
50 to 450
(2 to 18)
25 to 50
(1 to 2)
ASTM A234 Gr. WPB, seamless, ASME B16.9.
Beveled
Schedule same
as the pipe
ASTM A105, MSS SP-97, ASMEB31.3 (302.2, 304.3,
326, 328.5.4).
ASTM A105, MSS SP-97.
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4).
ASTM A105, ASME B16.5, schedule and
bore same as the pipe.
ASTM A105, ASME B16.5
150
RF
150
RF
300
RF
ASTM A105, ASME B16.36, welding neck,,
bore same as the pipe
300
RF
ASTM A105, ASME B16.5
Valves
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Sheet 122 de 214
“Dos Bocas New Refinery, Tabasco”
Gate
Valves
8.1, 8.9
20 to 50
(3/4 to 2)
800
Beveled
Gate
Valves
8.1
8.3
80 to 450
(3 to 18)
150
RF
Globe Valves
8.1
20 to 50
(3/4 to 2)
800
Beveled
Globe Valves
8.1
80 to 300
(3 to 12)
150
RF
Check Valves
8.1
8.4
8.9
20 to 50
(3/4 to 2)
150
Beveled
Check Valves
8.1
8.4
80 to 450
(3 to 18)
150
RF
8.1, 8.6
8.20
8.21
80 to 600
(3 to 24)
150
RF
20 to 450
(3/4 to 18)
150
RF
20 to 450
(3/4 to 18)
300
For Orifice Plate
Holder Flanges
Butterfly Valves
Rev. 0
ASTM A105, Trim 16, OS&Y, ISO 15761, fixed
handwheel, rising stem, screwed bonnet, solid
gate..
ASTM A216 Gr. WCB, Trim 16, OS&Y, ISO
10434, Fixed handwheel, rising stem, flanged
bonnet, solid gate..
ASTM A105, Trim 16, OS&Y, ISO 15761,
handwheel and rising stem, screwed bonnet.
ASTM A216 Gr. WCB, Trim 16, conforming to
API STD 623, OS&Y, ASME B16.34,
handwheel and rising stem, flanged bonnet..
ASTM A105, Trim 16, ISO 15761, ball or piston
type for working in horizontal / vertical position,
screwed cover.
ASTM A216 Gr. WCB, Trim 16, API 594 type
B, flanged cover, swing type and stop
integrated to the body that limits the opening
of the disc..
ASTM A216 Gr. WCB, triple eccentricity, solid
one-piece seal ring, integral body seat, metalmetal seal, API 609 category B design, ISO
10497 fireproof. Flanged body. The design
must comply with 8.2.1 and 8.10 of ET-204PEMEX-2019..
Gaskets
Gaskets
9.1
RF
Bolts
Studs
Spiro-metallic, with centering ring (external) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of type
304 Stainless Steel, ASME B16.20, bore equal
to the inside diameter of the pipe..
ASTM A193 Gr. B7M, threads ASME B1.1
class 2A.
ASTM A194 Gr. 2HM, threads ASME B1.1
class 2B.
Nuts
Miscellaneous
Eight Figure
(integral)
Eight Figure
(blind joint and
spacer separated)
“T” Type filters
“Y” Type filters
20 to 300
(3/4 to 12)
12.1
12.1
350 to 450
(14 to 18)
80 to 450
(3 to 18)
20 to 50
(3/4 to 2)
Branch Connections
150
RF
ASTM A515 Gr. 70, ASME B 16.48
150
RF
ASTM A515 Gr. 70, ASME B 16.48
Schedule same as
the pipe
Beveled
ASTM A234 Gr. WPB, seamless.
6000
Beveled
ASTM A105, ends ASME B16.11.
Graph T-A09T1 Branch Connections
Notes:
1.1
1.2
1.6
The pressure and temperature limits of this specification are based on the range of the corresponding flange
class, indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so
the pressure and temperature restrictions recommended by the manufacturer should be consulted.
The sacrificial thickness is included in the wall thickness that is assigned to the pipe, connections and fittings for
this specification, for the purposes of the permissible corrosion that can be tolerated during the life of these
parts.
Thermal Treatment and Efforts Relief of stresses: API RP 945 (amines); MR0103 (sour water), applies to all
welded joints.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
2.2
4.1
4.2
4.3
5.1
6.1
6.2
6.3
7.2
7.3
7.4
8.1
8.3
8.4
8.6
8.20
8.21
9.1
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 123 de 214
“Dos Bocas New Refinery, Tabasco”
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under
stress analysis.
b. For pipes installed in pipe racks (raised frames) and above ground sleepers, the minimum acceptable length
of the pipe is 12 m.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap Plugs for ends of purges and vents.
All threaded joints must be sealed with welding.
It is forbidden to use pipe connections or field fabricated fittings such as wedges or "fish mouths" and flat caps.
All the branches must be built with factory manufactured accessories.
a. Welding of reinforced connectors to the head must be fully penetrated in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter
indicated in the specification is the branch.
The integrally reinforced Threaded Outlet connector limits its use for purges and vents that must be removed
after the hydrostatic or pneumatic test. Once the test is completed, they must be closed with a solid bar plug
and sealed with welding. Purges and vents that are required during startup, operation or maintenance must be
Nipple Outlet or Nipple pipette.
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, welds
should be inspected according to the percentage indicated in the pipe specification.
Weld neck flanges must be of the same pipeline Schedule to which they are to be attached.
The orifice plate holder flanges and pipe flanges to which they will be attached must be of the same bore and
thickness. Before welding, the flange must be aligned to the tube, no steps should be left. After welding, rectify
the inner weld (mirror finish), there should be no restrictions, bumps or sinking. All threaded joints (nipples and
solid bar plugs) must be sealed with welding.
For long neck flanges for thermowell taps / nozzles, the inner diameter must be specified to match the outer
diameter of the thermowell and ensure insertion, Class 300 is the minimum allowed.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact
letter on the valve body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (bolts and nuts) must be of the proper specification to the valve body material
e. Handwheels of all valves must be solid, hollow handwheels are not allowed.
DN 50 (NPS 2) gate valves with flanged ends, the flanges and body must be in one piece (not welded), they are
only allowed in equipment nozzles for instrument sockets such as magnetic and optical level indicators, level
transmitters.
The check valves must be installed horizontally with the lid on top, to ensure the closure of the gate and
prevent the return of fluids.
It is forbidden to use ear valves or bipartition disc type installed between flanges.
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must be
manufactured in one piece.
The packing of the packing box should be graphite for cryogenic and fire-resistant service.
For use on long neck flanges and orifice plate holder flanges.
a. The filter element must be selected to retain particles in accordance with what is recommended for the
equipment to be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, eight figures must be included, additional to the blocking
valves to ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
HEAD DIAMETERS
Particular Technical Specification
Project:
DM
(mm)
20
25
40
50
80
100
150
NPS
(in)
3/4
1
1 1/2
2
3
4
6
200
250
300
350
400
450
8
10
12
14
16
18
NPS
(in)
DM
(mm)
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 124 de 214
“Dos Bocas New Refinery, Tabasco”
TR = Reduced "T" wi th bevel ed ends .
T
T = Stra i ght "T" wi th bevel ed ends
T
TRC= Reduced "T" wi th bevel ed ends . Stra i ght "T" + Reduction or, Reduced "T" + Reduction
TRC
T
W = Wel dol et
T
ABN
ABN = Connector Integra l l y Rei nforced "Ni pol et" or "Ni ppl e Pi pette"+ va l ve a s
a n option to the "Ni pol et" or, "Ni ppl e Pi pete", us e wel dol et + Ni ppl e.
T
*
**
T
* Al l bra nches mus t be bui l t wi th fa ctory ma nufa ctured a cces s ori es
** Thi s s peci fi ca tion prohi bi ts ma ki ng di rect i ns erts or wi th
T
W
TR
rei nforcement pl a tes , connections s houl d i nva ri a bl y be us ed
(Stra i ght "T", Reduced "T", Stra i ght "T + Reducers ) or, i ntegra l l y
rei nforced connectors (Wel dol et, Ni ppol et or Ni ppl e Pi pette).
T
T
T
T
or
T
TRC
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
10
12
14
T
16
18
100 150 200 250 300 350 400 450
BRANCH DIAMETERS
GRAPH T-A09T1 - BRANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Allowable Corrosion
1.6 mm (0.0625 in)
See Note 1.2
Component
Sheet 125 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial Installations
Service: Wet drain,
Liquid drain (noncorrosive
hydrocarbons)
T-A12T1
Pressure and Temperature
Limits
840 kPa@ 350°C
See Note 1.1
Diameter
DN (NPS)
RT
20 %
Valve
Internals
Trim 5
Material: CS.
See
Notes
Rev. 0
Thickness (in) or
Minimum Schedule /
Class
Ends
NDT
20 %
See Note 6.3
Class 150
RF Face
Welding Box welding in DN 50 (NPS 2)
and smaller; Butt welds DN 80 (NPS 3)
and larger
Description
Piping
2.1
Pipe
2.2
20 to50
(3/4 to2)
80 to600
(3 to24)
80
Flat
ASTM A106 Gr. B
Standard
Beveled
2.2
2.3
650 to1500
(26 to60)
To be calculated by
Contractor
3.1
20 to50
(3/4 to2)
80
3.2
20 to50
(3/4 to2)
Schedule same as
the pipe
20 to50
(3/4 to2)
3000
20 to50
(3/4 to2)
3000
Threaded
Schedule same as
the pipe
Beveled
ASTM A672 Gr. B60 (Plate ASTM A515
Gr. 60), Class 12, with seams longitudinal
straight, EFW, RT 100%, Ex = 1.0
Nipples
Nipple
Socket conc.
Socket
eccentric.
Connections
90 ° elbow
45 ° Elbow
Straight “T”
Reduced “T”
Cross
Coupling
Reduced
Coupling
Cap Plug
Solid Bar Plug
Street Elbow
4.1
4.5
4.5
5.1
2.3
5.1
2.3
Lateral Branch
to 45 °
Seamless
Lateral”
80 to600
(3 to24)
650 to1200
(26 to48)
5.1
2.3
1300 to1500
(52 to60)
80 to600
(3 to24)
650 to1200
(26 to48)
5.1
2.3
1300 to1500
(52 to60)
5.1
5.5
80 to 450
(3 to 18)
5.1
45° Elbow
Thread / Bevel
ASTM A106 Gr. B
ASTM A234 Gr. WPB, MSS SP-95
Flat / Bevel
Welding Box
ASTM A105, ASME B16.11
4.2
5.1
90° Elbow long
radius
Flat / Thread
Flat / Flat
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Schedule same as
the pipe
Schedule same as the
pipe
Schedule same as
the pipe
Schedule same as
the pipe
Beveled
Beveled
Beveled
Beveled
ASTM A105, ASME B16.11, thread ASME
B1.20.1
ASTM A234 Gr. WPB, ASME B16.9
ASTM A234 Gr. WPBW, with seams
longitudinal straight, Ex= 1.0, ASME B16.9
WPHY-42 with seams longitudinal straight
MSS SP-75
ASTM A234 Gr. WPB, ASME B16.9
ASTM A234 Gr. WPB-W, with seams
longitudinal straight, Ex= 1.0, ASME B16.9
WPHY-42 with seams longitudinal straight
MSS SP-75
ASTM A234 Gr WPB, with beveled end
with thickness equal to the pipeline
schedule.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Lateral Branch
to 45 °
Reduced
“Lateral
Seamless
Reduction”
5.1
5.5
Rev. 0
Sheet 126 de 214
“Dos Bocas New Refinery, Tabasco”
80 to 400
(3 to 16)
80 to 600
(3 to 24)
Concentric
5.1
650 to 1200
2.3
(26 to 48)
Reduction
5.1
1300 to
2.3
1500
(52 to 60)
80 to 600
5.1
(3 to 24)
Eccentric
650 to 1200
(26 to 48)
Reduction
5.1
2.3
1300 to
1500
(52 to 60)
80 to 600
5.1
(3 to 24)
650 to 1200
Cap Plug
5.1
(26 to 48)
5.1
1300 to
2.3
1500
(52 to 60)
Integrally Reinforced Connections
6.1
20 to 50
Threaded Outlet
6.2
(3/4 to 2)
6.1
20 to 50
Lateral Outlet
6.3
(3/4 to 2)
80 to 450
Lateral
6.1
(3 to 18)
6.1
20 to 50
Nipple Outlet o
6.3
(3/4 to 2)
Nipple pipette
Flanges
Welding Box
20 to 50
7.1
Flanges
(3/4 to 2)
80 to 600
(3 to 24)
Welding Neck
7.2
Flanges
650 to 1500
(26 to 60)
20 to 600
(3/4 to 24)
Blind Flanges
650 to 1500
(26 to 60)
Long Neck
25 to 50
7.4
(1 to 2)
Flanges
Valves
5.1
Schedule same as
the pipe
Schedule same as
the pipe
Schedule same as
the pipe
Schedule same as
the pipe
Schedule same as
the pipe
Schedule same as
the pipe
Beveled
Beveled
ASTM A234 Gr. WPB, ASME B16.9
Beveled
ASTM A234 Gr. WPBW, with seams
longitudinal straight, Ex= 1.0, ASME B16.9
WPHY-42 with seams longitudinal straight,
MSS SP-75
Beveled
ASTM A234 Gr. WPB, ASME B16.9
Beveled
ASTM A234 Gr. WPBW, with seams
longitudinal straight, Ex= 1.0, ASME B16.9
WPHY-42 with seams longitudinal straight
MSS SP-75
Beveled
3000
WPHY-42 with seams longitudinal straight
MSS SP-75
Threaded
ASTM A105, MSS SP-97
Welding Box
ASTM A105, manufactured in one-piece
ASME B31.3 (302.2, 304.3, 326, 328.5.4).
ASTM A105, manufactured in one-piece
ASME B31.3 (302.2, 304.3, 326, 328.5.4).
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
Schedule same as
the pipe
Beveled
3000
Flat
150
RF
150
RF
ASTM A105 ASME B16.5, Schedule 80
ASTM A105 ASME B16.5, Schedule and
bore equal to that of the pipe.
ASTM A105 ASME B16.47A (MSS-SP44),
Schedule & bore equal to that of the pipe.
ASTM A105 ASME B16.5.
150
RF
ASTM A105 ASME B16.47TO(MSS-SP44)
300
RF
Gate
Valves
8.1
8.13
20 to 50
(3/4 to 2)
800
Gate
Valves
8.1
8.3, 8.13
80 to 600
(3 to 24)
150
RF
Gate
Valves
8.1
8.13
650 to 900
(26 to 36)
150
RF
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A234 Gr. WPB, ASME B16.9
ASTM A234 Gr. WPBW, with seams
longitudinal straight, Ex= 1.0, ASME B16.9
Schedule same as
the pipe
3000
ASTM A234 Gr. WPB, with beveled end with
thickness equal to the pipeline Schedule.
Welding Box
ASTM A105, ASME B16.5.
ASTM A105, Trim 5, OS&Y, ISO 15761,
fixed handwheel,
ascending stem,
screwed bonnet, solid gate.
ASTM A216 Gr. WCB, Trim 5, OS&Y, ISO
10434, fixed handwheel, rising stem,
flanged bonnet, solid or flexible gate.
ASTM A216 Gr. WCB, Trim 5 (see ISO
10434), OS&Y, ASME B16.34, ASME
B16.47A, fixed handwheel, rising stem,
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Butterfly Valves
8.1, 8.6
8.20
8.21
8.30
8.31
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 127 de 214
“Dos Bocas New Refinery, Tabasco”
80 to 600
(3 to 24)
150
RF
flanged bonnet, flexible wedge.
ASTM A216 Gr. WCB, triple eccentricity,
solid one-piece seal ring, integral body
seat, metal-metal seal, API 609 category B
design, ISO 10497 fireproof. Flanged
body. The design must comply with 8.2.1
and 8.10 of ET-204-PEMEX-2019.
Gaskets
Gaskets
20 to 600
(3/4 to 24)
150
RF
Gaskets
650 to 1500
(26 to 60)
150
RF
25 to 50
(1 to 2)
300
RF
Gaskets
9.1
Bolts
Studs
Spiro-metallic,
with
centering
ring
(external) of carbon steel ASTM A36 /
A36M: 2012 with anticorrosive coating,
flexible graphite filling (asbestos-free),
winding and inner ring of 304 Stainless
Steel, ASME B16.20 for flanges ASME
B16.5, bore equal to diameter inside the
pipe.
Spiro-metallic,
with
centering
ring
(external) of carbon steel ASTM A36 /
A36M: 2012 with anticorrosive coating,
flexible graphite filling (asbestos-free),
winding and inner ring of type 304
Stainless Steel, ASME B16.20, for ASME
B16.47A flanges (MSS-SP44), bore equal
to the inside diameter of the pipe.
Spiro-metallic,
with
centering
ring
(external) of carbon steel ASTM A36 /
A36M: 2012 with anticorrosive coating,
flexible graphite filling (asbestos-free),
winding and inner ring of 304 Stainless
Steel, ASME B16.20 for flanges ASME
B16.5, bore equal to diameter inside the
pipe.
ASTM A193 Gr. B7, threads ASME B1.1
class 2A.
ASTM A194 Gr. 2H, threads ASME B1.1
class 2B.
Nuts
Miscellaneous
Eight Figures
(integral)
Figures eight (blind
joint and spacer
separated)
20 to 300
(3/4 to 12)
150
RF
ASTM A515 Gr. 70, ASME B 16.48
350 to 900
(14 to 36)
150
RF
ASTM A515 Gr. 70, ASME B 16.48
Branch Connections
Graph T-A12T1 Branch Connections
Notes:
1.1
The pressure and temperature limits of this specification are based on the range of the corresponding flange class,
indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure
and temperature restrictions recommended by the manufacturer should be consulted.
1.2
In the wall thickness that is assigned to the pipe, connections and fittings by this specification, the sacrificial thickness is included,
for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
2.1
In pipes, DN 20 (NPS 3/4) this is the minimum diameter allowed.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses under stress analysis.
b. For pipes installed in pipe racks (raised frames) and above ground sleepers the minimum acceptable length is 12 m..
All seam pipes and connections, which are indicated in this specification, the weld must be longitudinal straight and
100 percent radiographed.
The threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where cap plugs are
installed..
2.2
2.3
3.1
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
3.2
4.1
4.2
4.5
5.1
5.5
6.1
6.2
6.3
7.1
7.2
7.4
8.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 128 de 214
“Dos Bocas New Refinery, Tabasco”
a. In the sockets, the end of greater diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50
(NPS 2); the Schedule must be equal to that of the pipe to be welded.
b. The threaded end sockets for use of pressure taps (pressure transmitters and gauges), the threaded joints
must be sealed with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap Plug for terminal ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps are only allowed in openings without the use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate
holder flanges, seal with welding after installation.
It is forbidden to use pipe connections or field fabricated, fittings, such as wedges or “fish mouths” and flat caps. All
branches must be built with factory manufactured accessories.
Head diameter and branch, Schedule or thickness of head and Branch must be specified.
a. Welding of reinforced connectors to the head must be fully penetrated in accordance with ASME code B31.3.
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the
specification is the branch.
The integrally reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the hydrostatic
test or pneumatic Once the test is completed, they must be closed with a solid bar plug and sealed with welding. Purges and vents
that are required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet, Socket Weld Outlet, and smaller connections,
the Welding Box welds must be inspected according to the percentage indicated in the pipe specification.
Welding box flanges must be bore of the pipe to which they will be attached.
Weld neck flanges must have the same pipeline Schedule to which they are to be attached.
Long neck flanges for thermowell taps / nozzles, the inner diameter must be specified to relate it to the outer
diameter of the thermowell and ensure insertion, the minimum allowed Class is 300.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter on the valve
body: identification number, types of bonnet gasket and packing box packing.
8.21
d. All valve hardware (bolts and nuts) must be of the appropriate specification and compatible with the material of the valve body.
e. Handwheels of all valves must be solid, hollow handwheels are not allowed.
DN 50 Gate Valves (NPS 2) with flanged ends, flanges and body must be in one piece (not welded), only allowed in
equipment nozzles for instrument sockets such as magnetic and optical level indicators, level transmitters.
It is forbidden to use ear valves or bipartition disc type installed between flanges..
The valves must be installed with the stem in a horizontal position, so that in case of falling of the disc does not
disable the safety valve or the vent head.
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must be
manufactured in one piece..
The packing of the packing box should be graphite for cryogenic and fire-resistant service.
8.30
The blocking valves before and after the pressure relief valve must be full-pass according with API RP 520 Part II.
8.31
9.1
For venting systems, when using triple eccentricity butterfly valve, the disk-stem connection must be by means of
wedges or grooves or a system that prevents the separation of the disk from the stem.
For use on long neck flanges and orifice plate holder flanges.
8.3
8.6
8.13
8.20
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
HEAD DIAMETERS
Particular Technical Specification
Project:
DM
(mm)
20
25
40
50
80
100
150
200
250
300
350
400
450
500
600
650
700
750
800
900
1000
1050
1150
1200
1300
1400
1500
Rev. 0
Sheet 129 de 214
“Dos Bocas New Refinery, Tabasco”
NPS
(in)
3/4
TC
1
TC
1 1/2
TRC
TC
2
TC
3
DL
4
DLR DL
6
*
DLR DL
8
LC
**
DL
10
DLR
DL
12
DL
14
16
18
20
24
26
28
30
LB
32
36
40
42
46
48
52
56
60
NPS (in) 3/4 1 1 1/2 2
3
4
6
8 10 12
DM
20 25 40 50 80 100 150 200 250 300
(mm)
TC - Wel di ng Box "T"
TRC= Wel di ng Box Reduced "T"
LC = Integra l l y Rei nforced Connection 45° (La trol et or equi va l ent) wel di ng box ends .
LB = Integra l l y Rei nforced Connection 45° (La trol et or equi va l ent) bevel ed ends .
DL = 45° La tera l bra nch (s ea ml es s l a tera l or equi va l ent), bevel ed ends .
DLR = 45° La tera l bra nch (s ea ml es s l a tera l reducer or equi va l ent), bevel ed ends .
E = Ins ert + envel ope.
* Al l bra nches mus t be bui l t wi th fa ctory ma nufa ctured a cces s ori es
** Thi s s peci fi ca tion prohi bi ts ma ki ng di rect i ns ets or wi th rei nforcement pl a tes ,
i nva ri a bl y connections mus t be us ed for l a tera l deri va tions a nd for bra nches of
NPS 20 a nd l a rger wi th di rect i ns ert + envel ope.
DL
DL
DL
E = Direct Insert Envelope
Envelope of the same
thickness as the venting
head
45°
Venting Head
26
28
30
32
36
350 400 450 500 600 650
14
16
18
20
24
700
750
800
900 1000 1050 1150 1200 1300 1400 1500
40
42
46
48
52
56
60
BRANCH DIAMETERS
GRAPH T-A12T1 - BRANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Allowable Corrosion:
0 mm (0”)
Component
Pressure and Temperature Limits
1896 kpa@ 38 °C
Valve
Internals
Trim 12
Material: Stainless Steel TP 304L
Efforts Relief: N.A.
See
Notes
Sheet 130 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Installation
Service: Breathing Air
Rev. 0
Diameter
DN (NPS)
Thickness (in) or
Minimum
Schedule / Class
T-A12T3
R
T
1
0
%
NDT
10%.
See Note 6.3
Class 150
RF Face
All the diameter Butt welded
Ends
Description
Piping
2.1
Pipe
20 to 35 (3/4
to 1 1/2)
50 (2)
80S
80 to 250
(3 to 10)
Nipples
Nipple
Swage conc.
Swage
eccentric.
Connections
90° Elbow
45° Elbow
Straight “T”
Reduced “T”
Cap
Plug
Solid Bar Cap
3.1, 4.3
3.2, 4.3
4.3
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
Blind Flanges
Bevel / Bevel Stainless Steel, ASTM A312 type 304L
Bevel /
Acero Inoxidable, ASTM A403 Gr. WP304L, MSS SP-95
Thread
Schedule
equal to that of
the pipe
Schedule
equal to that of
the pipe
Beveled
3000
Threaded
4.5
Threaded
6.1
6.3
20 to 50
(3/4 to 2)
7.2
20 to 250
(3/4 to 10)
20 to 250
(3/4 to 10)
ASTM A312 type 304L
10S
90 ° Elbow
long radius
45 ° Elbow
Straight “T”
Reduced “T”
80 to 250
Concentric
(3 to 10)
Reduction
Eccentric
Reduction
Cap Plug
Integrally Reinforced Connections
6.1
20 to 50
Threaded
6.2
(3/4 to 2)
Outlet
80 to 100
Butt Weld
6.1
(3 to 4)
Outlet
Nipple Outlet o
Nipple pipette
Flanges
Welding Neck
Flanges
Beveled
40S
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Stainless Steel , ASTM A403 Gr. WP304L ASME
B16.9
Stainless Steel, ASTM A182 F304, ASME B16.11, thread
ASME B1.2.1
Stainless Steel, ASTM A182 F304, ASME B16.11, thread
ASME B1.20.1
Schedule equal
to that of the
pipe
Beveled
3000
Threaded
Stainless Steel, ASTM A182 F304L, MSS SP/97
Beveled
Stainless Steel, ASTM A182 F304L, MSS SP/97
Schedule
same as the
pipe
Stainless Steel, ASTM A403 Gr. WP304L ASME
B16.9
Stainless Steel, ASTM A182 F304L, ASME B31.3 (302.2,
304.3, 326, 328.5.4)
3000
150
RF
Stainless Steel, ASTM A182 F304L ASME B16.5
150
RF
Stainless Steel, ASTM A182 F304 ASME B16.5.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Orifice Plate
Holder Flanges
7.3
Rev. 0
Sheet 131 de 214
“Dos Bocas New Refinery, Tabasco”
50 to 250
(2 to 10)
300
RF
Stainless Steel, ASTM A182 F304L, ASME B16.36,
welding neck, bore equal to that of the pipe.
Valves
8.1, 8.2
20 to 50
(3/4 to 2)
800
8.1
80 to 250
(3 to 10)
150
RF
20 to 50
(3/4 to 2)
800
Beveled
80 to 250
(3 to 10)
150
RF
800
Beveled
Gate
Valves
Globe Valves
8.1
20 to 50
(3/4 to 2)
Check
Valves
Stainless steel, ASTM A182 F304L, trim 12, OS&Y,
Beveled x ISO 15761 (API 602), fixed handwheel, rising stem,
Thread flanged bonnet, solid gate, ultra-low emission
gaskets. Thread ASME B1.20.1, Schedule equal to
that of the pipe.
Stainless Steel, ASTM A182 F304L, trim 12, OS&Y,
ISO 15761 (API 602), fixed handwheel, rising stem,
Beveled flanged bonnet, solid gate, Ultra low emission
gaskets, Schedule same as the pipeline.
Stainless Steel, ASTM A351 CF8M, trim 12, OS&Y,
API 600, fixed handwheel, rising stem, flanged
bonnet, ultra-low emission gaskets.
Stainless Steel, ASTM A182 F304L, trim 12, OS&Y,
ISO 15761 (API 602), handwheel and rising stem,
flanged bonnet, ultra-low emission gaskets, Schedule
equal to that of the pipe..
Stainless Steel, ASTM A351 CF8M, trim 12, OS&Y,
ASME B16.34 and API 600 requirements, handwheel
and rising stem, flanged bonnet, ultra-low emission
gaskets.
Stainless Steel, ASTM A182 F304, trim 12, ISO
15761 (API 602), ball or piston type to work
horizontally / vertically, flanged cover, Ultra low
emission gaskets, Schedule same as the pipeline.
8.4
80 to 250
(3 to 10)
150
RF
Stainless Steel, ASTM A351 CF8M, trim 12, ASME
B16.34 and API 600 requirements, flanged cover,
swing type and stop integrated to the body that limits
the opening of the disc, ultra-low emission gaskets.
Gaskets
Gaskets
9.2
20 to 250
(3/4 to 10)
30 to 250
(1 to 10)
150
300
RF
Bolts
Studs
ASTM A193 Gr. B8 Class 2 threads ASME B1.1 class
2A
ASTM A194 Gr. 8, threads ASME B1.1 class 2B
Nuts
Miscellaneous
Eight Figures
“T” Type filters
“Y” Type filters
Quick
12.4
Connectors
BRANCH TABLE
Gasket 150 # RF PTFE with aluminum silicate 1/16”
thickness, ASME B16.20 for flanges ASME B16.5.
Gasket 300 # RF PTFE with aluminum silicate 1/16”
thickness, ASME B16.20 for flanges ASME B16.5.
20 to 250
(3/4 to 10)
80 to 250
(3 to 10)
20 to 50
(3/4 to 2)
8
(1/4)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
150
RF
150
Weldable
ASTM A403 Gr. WP304L
600
Beveled
ASTM A351 CF8
Threaded
ASTM A240 Gr. 304, ASME B16.48
Stainless steel, the connector must include a safe so
that the hose does not come off. from the connector.
T-A12T3 BRANCH TABLE
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
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Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 132 de 214
“Dos Bocas New Refinery, Tabasco”
Notes:
3.1
3.2
4.3
4.5
6.1
6.2
6.3
7.2
7.3
8.1
8.2
8.3
8.4
8.26
9.2
HEAD DIAMETERS
12.4
a. For terminal ends of purges, vents and socket orifice flange holes, the minimum length of the nipple is 9 cm (3.5 ”).
b. The threaded joints must be NPT (ASME B1.20.1) and must be sealed with a welding, except where cap plugs are
installed.
c. DN ½ ”nipples are only allowed for instrument sockets such as pressure transmitters, pressure gauges and orifice
plate carrier flanges.
a. In the sockets, the end of greater diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS 2);
the Schedule must be equal to that of the pipe to be welded.
b. In threaded end sockets used in pressure taps (pressure transmitter. & gauges), the threaded joints must be
sealed with welding.
All threaded joints must be sealed with welding.
Solid bar caps allowed in unused openings, from DN ½ ”to 2” as in orifice plate holder flanges, seal with welding after
installation.
Welding of the reinforced connectors to the head must be fully penetrated according to ASME code B31.3.
The fully reinforced Threaded Outlet connector have limited use for purges and vents that must be removed after the
hydrostatic or pneumatic test. Once the test is over, they must be blinded with a solid bar stopper and sealed with
welding the threaded joint. Purges and vents required during startup, operation or maintenance must be Nipolet or
Nipple pipette.
In integrally reinforced connectors, they should be inspected (x rays), according to the percentage indicated.
Weld neck flanges must have the bore and thickness equal to that of the pipe to which they will be attached.
The orifice plate holder flange and pipe flanges to which they will be attached must be of the same bore and thickness.
Before welding, the flange must be aligned to the tube, no steps should be left. After welding, polish the inner weld
(mirror finish), there should be no restrictions, bumps or sinking. Sealing with welding must be applied to all threaded
joints (nipples and solid bar plugs).
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter on
the valve body: identification number, types of bonnet gasket and packing box packing.
c. All valve hardware (bolts and nuts) must be of the proper specification to the valve body material.
d. handwheels of all valves must be solid, hollow handwheels are not allowed.
DN ½ ” valves are only allowed for instrument sockets such as pressure transmitter. pressure gauges & in orifice plate
holder flanges.
2 ” DN gate valves with flanged ends, the flanges and body must be in one piece (not welded), they are only allowed
in equipment nozzles for instrument taps / nozzles, such as magnetic and optical level indicators, level transmitters.
The check valves must be installed horizontally, to ensure the closure of the gate and prevent the return of fluids.
For this specification in NPS 2 and smaller branches, no root valve is required. DN 50 (NPS 2) and smaller valves
with threaded ends, for terminal ends, the thread joint to the pipe, must be sealed with welding.
For use on long neck flanges and orifice plate holder flanges.
Breathing air intake stations must be 1 " in diameter with 4 1/4" quick connectors, secure. They must be located at the
sites determined by the risk study and if more than one take is required they must be spaced no more than 15 m.
DM
(mm)
20
25
40
50
80
100
150
200
250
NPS
(in)
3/4
1
1 1/2
2
3
4
6
8
10
NPS
(in)
DM
(mm)
T = Stra i ght "T" wi th be ve l e d e nds
T
TR = Re duce d "T wi th be ve l e e nds
T
W= We l dol e t
ABN = Connector Integrally
Reinforced "Nipolet" or
"Nipple Pipette"+ valve, as an
option use weldolet + Nipple.
T
TR
T
T
T
ABN
TR
T
T
W
3/4
1
1 1/2
2
3
20
25
40
50
80
T
4
6
8
10
100 150 200 250
BRANCH DIAMETERS
GRAPH T-A12T3 BRANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Services: Sour gas vent,
Acid gas vent.
Component
Notes
Sheet 133 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial Installations
Allowable Corrosion:
3.2 mm (0.125 in)
See Note 1.2
Rev. 0
T-A13T1
Pressure and temperature Limits
758 kPa@ 371°C
See Note 1.1
Valve Internals
Material: CS “Passivated”
Thermal Treatment and Efforts Relief Yes
Trim 16
See Note 1.6
Diameter
Thickness (in) or
Ends
DN (NPS)
Minimum Schedule /
Class
RT
20 %
NDT
20 %
Class 150
RF Face
welding’s Box welding for DN 50
(NPS 2) and smaller; Butt welds DN
80 (NPS 3) and larger.
Description
Piping
2.7, 2.10
Pipe
2.2
2.7
25 to 50
(1 to 2)
80 to 600
(3 to 24)
650 to 1500
(26 to 60)
80
Flat
ASTM A106 Gr. B
Standard
To be calculated by
Contractor
Beveled
ASTM A 672 Gr. B60 (ASTM Plate A515
Gr. 60), Class 12, With seams longitudinal
straight, EFW, (Ex = 1.0).
Nipples
Nipple
Socket conc.
Socket
eccentric.
Connections
90 ° Elbow
45 ° Elbow
Straight “T”
Reduced “T”
Coupling
Reduced
Coupling
Cap Plug
Solid Bar Plug
90° Elbow
Long radius
45 °Elbow
3.1
25 to 50
(1 to 2)
3.2
25 to 50
(1 to 2)
4.1, 6.3
20 to 50
(3/4 to 2)
3000
3.1, 4.2
20 to 50
(3/4 to 2)
3000
4.3, 3.1
20 to 50
(3/4 to 2)
5.1
80 to 600
(3 to 24)
5.1
2.3
650 to 1200
(26 to 48)
5.1
2.3
1300 to 1500
(52 to 60)
5.1
2.3
80 to 600
(3 to 24)
5.1
2.3
650 to 1200
(26 to 48)
5.1
2.3
1300 to 1500
(52 to 60 )
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Flat / Thread
Flat / Flat
80
Thread / Bevel
Flat / Bevel
Welding Box
Standard
Thickness equal
to that of the pipe
Standard
Thickness equal to
that of the pipe
ASTM A106 Gr. B
ASTM A234 Gr. WPB, MSS SP-95
ASTM A105N, ASME B16.11
Threaded
ASTM A105N, ASME B16.11, thread ASME
B1.20.1
Threaded
ASTM A105N, ASME B16.11, thread ASME
B1.20.1
Beveled
ASTM A234 Gr. WPB -S, ASME B16.9
Beveled
ASTM A234 Gr. WPB-W, With seams
longitudinal straight (Ex= 1.0), 100% Rx,
ASME B16.9
WPHY-42 With seams longitudinal straight,
(Ex= 1.0), 100% Rx, MSS SP-75.
Beveled
ASTM A234 Gr. WPB-S, ASME B16.9
Beveled
ASTM A234 Gr. WPB-W, With seams
longitudinal straight (Ex= 1.0), 100% Rx,
ASME B16.9
WPHY-42 With seams longitudinal straight
(Ex= 1.0), 100% Rx, MSS SP-75.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 1 de 5
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Lateral Branch
to 45°
Lateral
Branch to 45°
Reduced
5.1
2.3, 5.5,
12.2
5.1
2.3. 5.5,
12.2
5.1
Conc
Reduction
Eccentric
Reduction
5.1
2.3
5.1
2.3
Cap Plug
80 to 450
(3 to 18)
80 to 400
(3 to 16)
80 to 600
(3 to 24)
650 to 1200
(26 to 48)
80 to 600
(3 to 24)
5.1
2.3
650 to 1200
(26 to 48)
Welding Neck
Flanges
6.1
6.3
Beveled
A234 WPB-W-(Ex= 1.0), 100% Rx, S56 y S58
Standard
Beveled
A234 WPB-W-(Ex= 1.0), 100% Rx, S56 y S58
Standard
ASTM A234 Gr. WPB-S, ASME B16.9
Thickness equal to
that of the pipe
Beveled
20 to 50
(3/4 to 2)
650 to 1500
(26 to 60)
Standard
Beveled
Thickness equal to
that of the pipe
Long Neck
Flanges
3000
Threaded
ASTM A105N, MSS SP-97
3000
Welding
Box
ASTM A105N, MSS SP-97
3000
Welding
Box
Standard
Beveled
3000
Flat
150
RF
ASTM A105N, ASME B16.5, Schedule 80
150
RF
ASTM A105N, ASME B16.5, Schedule and bore
equal to that of the pipe.
ASTM A105N, ASME B16.47A (MSS SP 44
Schedule and bore equal to that of the pipe.
150
RF
25 to 50
(1 to 2)
ASTM A105N, ASME B31.3 (302.2, 304.3, 326,
328.5.4).
ASTM A234 Gr. WPB-W, With seams
longitudinal straight, (Ex= 1.0) 100% Rx,
ASME B16.9
ASTM A105N, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105N, ASME B16.5.
650 to 1500
(26 to 60)
7.4
ASTM A234 Gr. WPB-S, Seamless, ASME
B16.9
ASTM A234 Gr. WPB-W, With seams
longitudinal straight, (Ex= 1.0) 100% Rx,
ASME B16.9
WPHY-42 With seams longitudinal straight
(Ex= 1.0) 100% Rx MSS SP-75,
80 to 600
(3 to 24)
Blind
Flanges
ASTM A234 Gr. WPB-W, With seams
longitudinal straight (Ex= 1.0) 100% Rx,
ASME B16.9
WPHY-42 With seams longitudinal straight
(Ex= 1.0) 100% Rx MSS SP-75,
1300 a 1500
(52 to60)
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
7.2
Standard
1300 a 1500
(52 to 60)
Integrally Reinforced Connections
3.1, 6.1
20 to 50
Threaded
6.2
(3/4 to 2)
Outlet
6.1
20 to 50
Socket Weld
6.3
(3/4 to 2)
Outlet
6.1
20 to 50
Lateral Outlet
6.3
(3/4 to 2)
80 to 450
Lateral or
12.2
(3 to 18)
equivalent
Nipple Outlet
o Nipple
pipette
Flanges
Welding Box
Flanges
Sheet 134 de 214
“Dos Bocas New Refinery, Tabasco”
5.1
5.1
2.3
Rev. 0
ASTM A105N, ASME B16.47A (MSS SP 44).
300
RF
800
Welding
Box
ASTM A105N, ASME B16.5.
Valves
Gate
Valves
8.30
20 to 50
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A105N, Trim 16, OS&Y, ISO 15761,
handwheel fixed, rising stem, screwed
bonnet, solid wedge must meet the
requirements of NACE MR 0103.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 2 de 5
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Gate
Valves
Gate
Valves
8.30, 106
800
8.1
8.13, 8.30
80 to 600
(3 to 24)
150
8.1
8.13
650 to 900
(26 to 36)
150
Butterfly
Valves
8.1, 8.6
8.31
Sheet 135 de 214
“Dos Bocas New Refinery, Tabasco”
20 to 50
(3/4 to 2)
Gate
Valves
Rev. 0
80 to 600
(3 to 24)
150
Welding
Box / Thread
RF
RF
RF
ASTM A105N, Trim 16, OS&Y, ISO 15761,
handwheel fixed, rising stem, screwed
bonnet, solid wedge, must meet the
requirements of NACE MR 0103..
ASTM A216 Gr. WCB, Trim 16, OS&Y, ISO 10434,
Fixed handwheel, rising stem, flanged bonnet,
solid or flexible wedge, must meet requirements of
NACE MR 0103.
ASTM A216 Gr. WCB, Trim 16 (ISO 10434),
OS&Y, ASME B16.34, ASME B16.47A, fixed
handwheel, rising stem, flanged bonnet, solid or
flexible wedge, must meet NACE requirements
MR 0103..
ASTM A216 Gr. WCB, triple eccentricity,
solid one-piece seal ring, integral body seat,
metal-metal seal, API 609 category B
design, ISO 10497 fireproof. Flanged body.
The design must comply with 8.2.1 and 8.10
of the ET-204-PEMEX-2019.
Gaskets
Gaskets
20 to 600
(3/4 to 24)
150
RF
650 to 1500
(26 to 60)
150
RF
25 to 50
(1 to 2)
300
RF
Bolts
Studs
Spiro-metallic, with centering ring (external)
of carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of
type 304 Stainless Steel, ASME B16.20 for
ASME B16.5 flanges, bore equal to the
inside diameter of the pipe.
Spiro-metallic, with centering ring (external)
of carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of
stainless-steel type 304, ASME B16.20, for
ASME B16.47A flanges, bore equal to
diameter inside the pipe.
Spiro-metallic, with centering ring (external)
of carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of
304 Stainless Steel, ASME B16.20 for
flanges ASME B16.5, bore equal to the
inside diameter of the pipe.
ASTM A193 - Gr. B7M, threads ASME B1.1
class 2A,
ASTM A194 Gr. 2HM, threads ASME B1.1
class 2B,
Nuts
Miscellaneous
Eight figures
(integral)
Eight Figures
(blind joint and
spacer
separated)
BRANCH TABLE
20 to 300
(3/4 to 12)
150
RF
ASTM A515 Gr. 70, ASME B 16.48
350 to 900
(14 to 36)
150
RF
ASTM A515 Gr. 70, ASME B 16.48
T-A13T1 BRANCH TABLE
Notes:
1.1
The pressure and temperature limits of this specification are based on the range of the corresponding flange
class, indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so the
pressure and temperature restrictions recommended by the manufacturer should be consulted.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A13T1 Hoja 4 de 5
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
1.2
1.6
2.2
2.3
2.7
2.10
3.1
3.2
4.1
4.2
4.3
5.1
5.5
6.1
6.2
6.3
7.2
7.4
8.1
8.6
8.13
8.30
8.31
12.2
106
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 136 de 214
“Dos Bocas New Refinery, Tabasco”
In the wall thickness that is assigned to the pipe, connections and fittings by this specification, the sacrificial
thickness is included, for the purposes of the permissible corrosion that can be tolerated during the life of these
parts.
Heat Treatment and Relief of efforts, in accordance with NACE MR0103: 2015 in all welded joints.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses under stress
analysis.
b. For pipes installed in pipe racks (raised frames) and above ground sleeper, the minimum acceptable length is 12
m.
All seam pipes and connections, which are indicated in this specification, the weld must be longitudinal straight
and 100 percent radiographed.
All pipes of this service must have a minimum slope of 3 mm per meter of length..
Welds in DN 50 (NPS 2) and smaller must be by GTAW (Argon) process, do not use welding (SMAW).
Threaded joints must be NPT (ASME B1.20.1) and sealed with welding, except where threaded plugs are installed.
a. In the Sockets, the end of greater diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS
2); the ID must be equal to that of the pipe to be welded. b. The threaded end sockets for use of pressure taps
(pressure transmitters and gauges), the threaded joints must be sealed with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap plug for terminal ends of purges and vents.
Weld threaded joints
It is forbidden to use pipe connections or field fabricated fittings, such as wedges or “fish mouths” and flat caps. All
the Branches must be built with factory manufactured accessories.
Head diameter and branch, Schedule or thickness of head and Branch must be specified.
a. Welding of reinforced connectors with the head must be fully penetrated in accordance with ASME code B31.3.
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the
specification is the Branch.
The integrally reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after
the hydrostatic or pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed
with welding. Purges and vents that are required during startup, operation or maintenance must be Nipple Outlet or
Nipple pipette.
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet, Socket Weld Outlet, and smaller connections,
welding box welds should be inspected, in accordance with the percentage indicated in the pipe specification.
Weld neck flanges must have the same Schedule to the pipeline to which they are to be joined.
Long neck flanges for thermowell taps / nozzles, the inner diameter must be specified to relate it to the outer
diameter of the thermowell and ensure insertion, the minimum allowed Class is 300.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5, and the
larger ones with ASME B16.47 Series A.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter
on the valve body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (bolts and nuts) must be of the proper specification to the valve body material
e. Handwheels of all valves must be solid, hollow handwheels are not allowed.
It is forbidden to use ear valves or bipartition disc type installed between flanges..
The valves must be installed with the stem in a horizontal position, so that in case of falling of the disc it does not
disable the safety valve or the vent head.
The blocking valves before and after the pressure relief valve must be full-pass in accordance with API 520.
For venting systems, when using triple eccentricity butterfly valve, the disk-stem connection must be by means of
wedges or grooves or a system that prevents the separation of the disk stem.
Use 45 ° Lateral with 100% X-ray with radiographed seams and stress relief.
These valves should be installed only for vents, drains and connections to instruments.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
HEAD DIAMETERS
DM
(mm)
20
25
40
50
80
100
150
200
250
300
350
400
450
500
600
650
700
750
800
900
1000
1050
1150
1200
1300
1400
1500
NPS
(in)
3/4
1
1 1/2
2
3
Rev. 0
Sheet 137 de 214
“Dos Bocas New Refinery, Tabasco”
TC - Wel di ng Box "T"
TC
TRC= Wel di ng Box Reduced "T"
TC
TRC
4
6
8
10
12
14
16
18
20
24
26
28
30
32
36
40
42
46
48
52
56
60
NPS (in) 3/4
DM
20
(mm)
LC = Integra l l y Rei nforced Connection 45° (La trol et or equi va l ent) wel di ng box ends .
TC
LB = Integra l l y Rei nforced Connection 45° (La trol et or equi va l ent) bevel ed ends .
TC
DL = 45° La tera l bra nch (s ea ml es s l a tera l or equi va l ent), bevel ed ends .
DL
LC
DLR DL
DLR DL
*
**
DLR = 45° La tera l bra nch (s ea ml es s l a tera l reducer or equi va l ent), bevel ed ends .
ICP = Ins ert wi th rei nforci ng pl a te (rei nforci ng pl a te wi th s chedul e the s a me a s the hea der a nd wi dth
s a me to ha l f of OD of bra nch)
* Al l bra nches mus t be bui l t wi th fa ctory ma nufa ctured a cces s ori es
** Thi s s peci fi ca tion prohi bi ts ma ki ng di rect i ns ets or wi th rei nforcement pl a tes ,
DL
DLR
DL
i nva ri a bl y connections mus t be us ed for l a tera l deri va tions a nd for bra nches of
NPS 20 a nd l a rger wi th di rect i ns ert + envel ope.
DL
DL
DL
DL
LB
ICP
Insert w ith reinforcing plate
1
1 1/2
2
3
26
28
30
32
36
25
40
50
80 100 150 200 250 300 350 400 450 500 600 650
700
750
800
900 1000 1050 1150 1200 1300 1400 1500
4
6
8
10
12
14
16
18
20
24
40
42
46
48
52
56
60
BRANCH DIAMETERS
GRAPH T-A13T1 - BRANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A14T1 Hoja 2 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
T-A14T1
Pressure and Temperature Limits
Service: 50% Caustic
Soda, Alkali Solution
(KOH).
Component
Sheet 138 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
RT
50 %
1690 kpa@ 121°C
See Note 1.1
Material: CS “Passivated”
Thermal Treatment and Efforts Relief Yes
See Note 1.6
Allowable Corrosion:
3.2 mm (0.125 in)
See Note 1.2
Rev. 0
Notes
Diameter
DN (NPS)
Thickness (in) or
Minimum Schedule /
Class
20 (3/4)
25 to 50
(1 to 2)
160
Valve Internals
Trim 10
Ends
NDT
50 %
Class 150
RF Face
welding’s Box welding for DN 50
(NPS 2) and smaller; Butt welds
DN 80 (NPS 3) and larger
Description
Piping
Pipe
80 to2 50
(3 to 10)
Flat
XS
ASTM A106 Gr. B
STD
Beveled
Nipples
Nipple
Socket conc.
Socket
eccentric.
3.1
3.2
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
Schedule equal to
that of the pipe
Flat / Thread
Flat / Flat
Thread / Bevel
Flat / Bevel
ASTM A106 Gr. B
ASTM A234 Gr. WPB, MSS SP-95
Connections
90 ° Elbow
45 ° Elbow
Straight “T”
Reduced “T”
Cross
Coupling
Reduced
Coupling
Cap Plug
Solid Bar Cap
Street Elbow
Elbow 90 ° long
radius
45 ° Elbow
Straight “T”
Reduced “T”
Concentric
Reduction
Eccentric
Reduction
Cap Plug
20
(3/4)
6000
Welding Box
4.1
4.2
4.5
4.5
3000
20
(3/4)
6000
ASTM A105, ASME B16.11, thread ASME
B1.20.1
3000
ASTM A105, ASME B16.11, thread ASME B1.20.1
25 to 50
(1 to 2)
20 to 50
(3/4 to 2)
20
(3/4)
25 to 50
(1 to 2)
Threaded
6000
80 to 250
(3 to 10)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A105, ASME B16.11, thread ASME
B1.20.1
ASTM A105, ASME B16.11, threads (female male ASME B1.20.1)
3000
Schedule equal
to that of the pipe
5.1
ASTM A105, ASME B16.11
25 to 50
(1 to 2)
Beveled
ASTM A234 Gr. WPB, S/C, ASME B16.9
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
6000
3000
6000
3000
6000
3000
Schedule equal
to that of the pipe
6000
3000
Threaded
ASTM A105, MSS SP-97
Welding
Box
Welding
Box
Welding
Box
Welding
Box
ASTM A105, MSS SP-97
Beveled
ASTM A105, MSS SP-97
Beveled
Beveled
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105 ASME B16.5, Schedule equal to
that of the pipe.
ASTM A105 ASME B16.5 Schedule and bore
equal to that of the pipe.
150
RF
150
RF
ASTM A105 ASME B16.5.
300
RF
ASTM A105, ASME B16.36, welding neck,
Schedule & bore equal to that of the pipe.
300
RF
ASTM A105, ASME B16.5.
20 to 50
(3/4 to 2)
800
Gate
Valves
8.1
80 to 250
(3 to 10)
150
Globe Valves
8.1
20 to 50
(3/4 to 2)
800
Globe Valves
8.1
80 to 250
(3 to 10)
150
Check
Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
Check
Valves
8.1
8.4
80 to 250
(3 to 10)
150
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A105, MSS SP-97
RF
8.1
80 to 250
(3 to 10)
Threaded
150
Gate
Valves
8.1, 8.6
8.20
8.21
Sheet 139 de 214
“Dos Bocas New Refinery, Tabasco”
Integrally Reinforced Connections
Threaded Outlet
6.1
20
6.2
(3/4)
Threaded Outlet
6.1
25 to 50
6.2
(1 to 2)
Socket Weld
6.1
20
6.3
Outlet
(3/4)
Socket Weld
6.1
25 to 50
6.3
(1 to 2)
Outlet
Lateral Outlet
6.1
20
6.3
(3/4)
Lateral Outlet
6.1
25 to 50
6.3
(1 to 2)
80 to 100
Butt Weld Outlet
6.1
(3 to 4)
6.1
Nipple Outlet o
20
6.3
Nipple pipette
(3/4)
6.1
25 to 50
Nipple Outlet o
6.3
(1 to 2)
Nipple pipette
Flanges
20 to 50
Welding Box
7.1
(3/4 to 2)
Flanges
80 to 250
Welding Neck
7.2
(3 to 10)
Flanges
20 to 250
Blind Flanges
(3/4 to 10)
Orifice Plate
50 to 250
7.3
(2 to 10)
Holder Flanges
25 to 50
Long Neck
7.4
(1 to 2)
Flanges
Valves Note 801
Butterfly Valves
Rev. 0
150
Welding Box
RF
Welding Box
RF
Welding Box
RF
RF
ASTM A105, Trim 10, OS&Y, ISO 15761,
handwheel fixed, rising stem, screwed
bonnet, solid gate.
ASTM A216 Gr. WCB, Trim 10, OS&Y,
ISO 10434, Fixed handwheel, rising stem,
flanged bonnet, solid gate.
ASTM A105, Trim 10, OS&Y, ISO 15761,
handwheel and rising stem, bolted
bonnet.
ASTM A216 Gr. WCB, Trim 10 conforming
to API STD 623, OS&Y, ASME B16.34,
handwheel and rising stem, flanged
bonnet.
ASTM A105, Trim 10, ISO 15761, ball or
piston type for horizontal / vertical
position, cover screwed.
ASTM A216 Gr. WCB, Trim 10, API 594
type B, flanged cover, swing type and stop
integrated to the body that limits the
opening of the disc.
ASTM A216 Gr. WCB, triple eccentricity,
solid one-piece seal ring, integral body
seat, metal-metal seal, API 609 category
B design, ISO 10497 fireproof. Flanged
body. The design must comply with 8.2.1
and 8.10 of ET-204-PEMEX-2019.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A14T1 Hoja 2 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Rev. 0
Sheet 140 de 214
“Dos Bocas New Refinery, Tabasco”
Gaskets
Gaskets
20 to 250
(3/4 to 10)
150
RF
25 to 250
(1 to 10)
300
RF
Bolts
Studs
Spiro-metallic, with centering ring
(external) of 316 stainless steel, flexible
graphite filling (asbestos-free), winding
and inner ring of 316 Stainless Steel,
ASME B16.20 for ASME B16.5 flanges,
bore equal to the diameter pipe interior.
ASTM A193 Gr. B7, threads ASME B1.1
class 2A,
ASTM A194 Gr. 2H, threads ASME B1.1
class 2B,
Nuts
Miscellaneous
Eight Figures
(integral)
“T” Type filters
“Y” Type filters
12.1
12.1
20 to 250
(3/4 to 10)
80 to 250
(3 to 10)
20
(3/4)
25 to 50
(1 to 2)
BRANCH TABLE
150
RF
Schedule equal to
that of the pipe
6000
3000
Weldable
Welding Box
Welding Box
ASTM A515 Gr. 70, ASME B 16.48
ASTM A234 Gr. WPB
ASTM A105, ends ASME B16.11
ASTM A105, ends ASME B16.11
T-A14T1 BRANCH TABLE
Notes:
1.1
1.2
1.6
2.2
3.1
3.2
4.1
4.2
4.5
5.1
6.1
6.2
6.3
7.1
7.2
The pressure and temperature limits of this specification are based on the range of the corresponding flange class,
indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure
and temperature restrictions recommended by the manufacturer should be consulted.
In the wall thickness that is assigned to the pipe, connections and fittings by this specification, the sacrificial thickness
is included, for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
Heat treatment and stress relief according to NACE SP0403 in all welded joints.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses
b. For pipes installed in pipe racks (raised frames) and above ground sleepers, the minimum acceptable length is 12 m.
The threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where cap plugs are
installed.
a. In the sockets, the end of greater diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS 2);
and the Schedule must be equal to that of the pipe to be welded.
b. The threaded end sockets for use in pressure taps (pressure transmitters and gauges), the threaded joints must be
sealed with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap plugs for terminal ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps are only allowed in openings without use, for DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate holder
flanges, seal with solder after installation.
It is forbidden to use pipe connections or field fabricated fittings, such as wedges or “fish mouths” and flat caps. All
branches must be built with factory manufactured accessories.
a. Welding of the reinforced connectors to the head must be penetration in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated in
the specification is the branch.
The integrally reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the
hydrostatic test or pneumatic Once the test is completed, they must be closed with a solid bar plug and sealed with
welding. Purges and vents that are required during startup, operation or maintenance must be Nipple Outlet or Nipple
pipette.
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet, Socket Weld Outlet, and smaller connections,
welding box welds should be inspected with the percentage indicated in the specification.
Welding box flanges must correspond to the Pipeline Schedule.
Welding neck flanges must have the same Schedule to the pipeline to which they are to be joined.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A14NT1 Hoja 1 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
7.3
7.4
8.1
8.4
8.6
8.20
8.21
12.1
HEAD DIAMETERS
801
Rev. 0
Sheet 141 de 214
“Dos Bocas New Refinery, Tabasco”
The orifice plate holder flanges and pipe flanges to be joined must have the same bore and thickness. Before welding,
the flange must be aligned to the tube and there should be no steps. After welding, the inner weld must be ground and
polished (mirror finish), there should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar
plugs) must be sealed with welding.
Long neck flanges for thermowell taps, the inner diameter must be specified to relate it to the outer diameter of the
thermowell and ensure insertion, Class 300 is the minimum allowed.
a. On NPS 24 and smaller valves, flanges must comply with ASME B16.5 dimensions, and larger with ASME B16.47
Series A dimensions.
b. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter on
the valve body: identification number, types of bonnet gasket and packing box packing.
c. All valve hardware (bolts and nuts) must be of the appropriate specification and compatible with the material of the
valve body.
d. Handwheels of all valves must be solid, hollow handwheels are not allowed.
The check valves must be installed horizontally, to ensure the closure of the gate and prevent the return of fluids.
It is forbidden to use ear valves or bipartition disc type installed between flanges.
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must be
manufactured in one piece.
The packing of the packing box must be graphite for cryogenic and fire-resistant service.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to
be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, eight figures must be included, in addition to the blocking
valves, to ensure their total isolation.
All flanged joints including valve bonnets must be covered with protective sleeves.
DM
(mm)
20
25
40
50
80
100
150
200
250
NPS
(in)
3/4
1
1 1/2
2
3
4
6
8
10
NPS
(in)
DM
(mm)
TC = Wel di ng Box "T"
TC
TRC = Wel di ng Box Reduced "T"
TC
T = Stra i ghht "T" bevel ed ends
TC
TRC
ABN
TR = Reduced "T" bevel ed ends . Stra i ght "T" + Reducer or, Reduced "T + Reducer.
TC W= Wel dol et
T
ABN = Connector Integra l l y Rei nforced "Ni pol et" or "Ni ppl e Pi pette"+ va l ve,
a s a n option to "ni pol et" or "ni ppl e pi pette", us e Sockol et + Ni ppl e.
T
TR
T
* Al l bra nches mus t be bui l t wi th fa ctory ma nufa ctured a cces s ori es
T
** Thi s s peci fi ca tion prohi bi ts ma ki ng di rect i ns ets or wi th
rei nforcement pl a tes , i nva ri a bl y connectors mus t be us ed
W
T
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
10
(Stra i ght "T", Reduced "T", Stra i ght "T"s + Reductions ) or,
Integra l l y Rei nforced Connectors (Wel dol et, Ni pol et or Ni ppl e
Pi pette).
100 150 200 250
BRANCH DIAMETERS
GRAPH T-A14T1 BRANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A14NT1 Hoja 1 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Service: Spent Soda and
Caustic Drainage
See Note 1.6
Component
Sheet 142 de 214
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
Notes
T-A14NT1
Pressure and Temperature Limits
RT
50 %
1172 kpa@ 260°C
See Note 1.1
Material: CS “Passivated”
Thermal Treatment and Effort Relief Yes
See Note 2.3
Allowable Corrosion:
3.2 mm (0.125 in)
See Note 1.2
Rev. 0
Diameter
DN (NPS)
Thickness (in) or
Minimum Schedule
/ Class
20 (3/4)
25 to 50
(1 to 2)
160
Valve Internals
Trim 16
Ends
NDT
50 %
Class 150
RF Face
All welds are Butt.
Description
Piping
Pipe
2.3
Beveled
XS
ASTM A106 Gr. B
80 to 250
(3 to 10)
STD
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
Schedule equal to
that of the pipe
20 to 50
(3/4 to 2)
Schedule equal
to that of the
pipe
Beveled
Nipples
Nipple
Socket conc.
Socket
eccentric.
Connections
90° Elbow
45° Elbow
Straight “T”
Reduced “T”
Cross
Coupling
Reduced
Coupling
Cap Plug
3.1
3.2
4.1
4.2
Solid Bar Plug
4.5
Street Elbow
90° Elbow long
radius
45° Elbow
Straight “T”
Reduced “T”
Concentric
Reduction
Eccentric
Reduction
Cap Plug
5.1
20
(3/4)
25 to 50
(1 to 2)
20 to 50
(3/4 to 2)
20
(3/4)
25 to 50
(1 to 2)
80 to 250
(3 to 10)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Bevel/Bevel
Bevel/Thread
Beveled
600
ASTM A234 Gr. WPB, MSS SP-95
ASTM A234 Gr. WPB, seamless, ASME B16.9
ASTM A105N, ASME B16.11, thread
ASME B1.20.1
300
Threaded
600
ASTM A105N, ASME B16.11, thread
ASME B1.20.1
ASTM A105N, ASME B16.11, thread
(female – male ASME B1.20.1)
300
Schedule equal to
that of the pipe
ASTM A106 Gr. B
Beveled
ASTM A234 Gr. WPB, seamless, ASME B16.9
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Rev. 0
Sheet 143 of 5
“Dos Bocas New Refinery, Tabasco”
Integrally Reinforced Connections
Threaded Outlet
Lateral Outlet
Lateral 45°
6.1
6.2
6.1
6.3
12.2
Butt Weld Outlet
6.1
Nipple Outlet or
Nipple pipette
Flanges
Welding Neck
Flanges
6.1
6.3
7.2
Blind Flanges
Orifice Plate
Holder Flanges
Long Neck
Flanges
Valves
7.3
7.4
20
(3/4)
25 to 50
(1 to 2)
6000
Threaded
3000
20 to 50
(3/4 to 2)
80 to 250
(3- 10)
80 to 100
(3 to 4)
Schedule equal
to that of the pipe
Schedule equal
to that of the pipe
Schedule equal
to that of the pipe
20 to 50
(3/4 to 2)
Schedule equal
to that of the pipe
20 to 250
(3/4 to 10)
20 to 250
(3/4 to 10)
50 to 250
(2 to 10)
25 to 50
(1 to 2)
Beveled
Beveled
Beveled
Beveled
150
RF
150
RF
300
RF
300
RF
Gate
Valves
8.1
20 to 50
(3/4 to 2)
800
Bevel
Gate
Valves
8.1
80 to 250
(3 to 10)
150
RF
Globe Valves
8.1
20 to 50
(3/4 to 2)
800
Bevel
Globe Valves
8.1
80 to 250
(3 to 10)
150
RF
Check Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
Bevel
Check Valves
8.1
8.4
80 to 250
(3 to 10)
150
RF
20 to 250
(3/4 to 10)
150
RF
300
For Orifice Plate
Holder Flanges
RF
ASTM A105N, MSS SP-97
ASTM A105N, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
A234 WPB-W-S56 y S58
ASTM A105N, MSS SP-97
ASTM A105N, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105N ASME B16.5
ASTM A105N ASME B16.5.
ASTM A105N, ASME B16.36, welding
neck, bore equal to the pipe.
ASTM A105N, ASME B16.5.
ASTM A105N, Trim 16, OS&Y, ISO 15761,
handwheel fixed, rising stem, screwed
bonnet, solid gate.
ASTM A216 Gr. WCB, Trim 16, OS&Y, ISO
10434, Fixed handwheel, rising stem,
flanged bonnet, solid gate.
ASTM A105N, Trim16, OS&Y, ISO 15761,
handwheel and rising stem, screwed
bonnet.
ASTM A216 Gr. WCB, Trim 16 conforming
to API STD 623, OS&Y, ASME B16.34,
handwheel and rising stem, flanged
bonnet.
ASTM A105N, Trim 16, ISO 15761, ball or
piston type to work in horizontal / vertical
position, screwed cover.
ASTM A216 Gr. WCB, Trim 16, API 594
type B, flanged cover, swing type and stop
integrated to the body that limits the
opening of the disc.
Gaskets
Gaskets
25 to 250
(1 to 10)
Bolts
Studs
Nuts
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Spiro-metallic,
with
centering
ring
(external) of type 316 stainless steel,
flexible graphite filling (asbestos-free),
winding and inner ring of type 316
Stainless Steel, ASME B16.20 for ASME
B16.5 flanges, bore equal to inside
diameter of the pipeline.
ASTM A193 Gr. B7, threads ASME B1.1
class 2A,
ASTM A194 Gr. 2H, threads ASME B1.1
class 2B,
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A15T1 Hoja 1 de 5
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Project:
Miscellaneous
Eight Figures
(integral)
“T” Type filters
12.1
“Y” Type filters
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 144 of 5
“Dos Bocas New Refinery, Tabasco”
20 to 250
(3/4 to 10)
80 to 250
(3 to 10)
20
(3/4)
25 to 50
(1 to 2)
BRANCH TABLES 1 AND 2
150
RF
Schedule equal
to that of the pipe
Weldable
ASTM A234 Gr. WPB, seamless
Welding
Box
ASTM A105, ends ASME B16.11
6000
3000
ASTM A515 Gr. 70, ASME B 16.48
T-A14NT1 BRANCH TABLES 1 and 2
Notes:
1.1
1.2
1.6
2.3
3.1
3.2
4.1
4.2
4.5
5.1
6.1
6.2
6.3
7.2
7.3
7.4
8.1
8.4
8.6
The pressure and temperature limits of this specification are based on the range of the corresponding flange class,
indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure
and temperature restrictions recommended by the manufacturer should be consulted..
In the wall thickness that is assigned to the pipe, connections and fittings by this specification, the sacrificial thickness
is included, for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
This specification must be used when the service contains H2S conforming to NACE MR-0103.
Materials, welding, manufacturing, non-destructive examination, hardness control and heat treatments must comply
with the NACE MR-0103 and NACE SP0403 standard.
Threaded joints must be NPT (ASME B1.20.1) and sealed with welding, except where plugs are installed.
a. In the sockets, the end of greater diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS 2);
the Schedule must be equal to that of the pipe to be welded.
b. The threaded end sockets for use of pressure taps (pressure transmitters and gauges), the threaded joints must be
sealed with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap plug for terminal ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps are only allowed in openings without use, use DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate holder
flanges, seal with welding after installation.
It is forbidden to use pipe connections or field fabricated fittings, such as wedges or “fish mouths” and flat caps. All
branches they must be built with factory manufactured accessories..
a. Welding of the reinforced connectors to the head must be penetration in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified.
The integrally reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the
hydrostatic or pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed with
welding. Purges and vents that are required during startup, operation or maintenance must be Nipple Outlet or Nipple
pipette.
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet, Socket Weld Outlet, and smaller connections,
welding box welds should be inspected, in accordance with the percentage indicated in the pipe specification.
Welding neck flanges must have the same pipeline Schedule to which they are to be joined.
The orifice plate holder flanges and pipe flanges to be joined must have the same bore and thickness. Before welding,
the flange must be aligned to the tube and there should be no steps. After welding, you must grind and polish the
inner weld (mirror finish), they should not remain restrictions, bumps or subsidence. All threaded joints (nipples and
solid bar plugs) must be sealed with welding.
Long neck flanges for thermowell taps, the inner diameter must be specified to relate it to the outer diameter of the
thermowell and ensure insertion, Class 300 is the minimum allowed.
a. On NPS 24 and smaller valves, flanges must comply with ASME B16.5 dimensions, and larger with ASME B16.47
Series A dimensions.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter on
the valve body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (bolts and nuts) must be of the appropriate specification and compatible with the material of the
valve body.
e. Handwheels of all valves must be solid, hollow handwheels are not allowed.
The check valves must be installed horizontally, to ensure the closure of the gate and prevent the return of fluids.
It is forbidden to use ear valves or bipartition disc type installed between flanges.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
12.1
HEAD DIAMETERS
12.2
Rev. 0
Sheet 145 of 5
“Dos Bocas New Refinery, Tabasco”
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to
be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, eight figures must be included, in addition to the blocking
valves, to ensure their total isolation.
Use 45 ° Laterals with seam 100% X-rayed and stress relief.
DM
(mm)
20
25
40
50
80
100
150
200
250
NPS
(in)
3/4
1
1 1/2
2
3
4
6
8
10
NPS
(in)
DM
(mm)
T = Stra ighht "T" beveled ends
T
TR = Reduced "T" beveled ends . Stra ight "T" + Reducer
T
W= Weldolet
T
TR
ABN = Connector Integra lly Reinforced "Nipolet" or "Nipple Pipette"+ va lve,
a s a n option to "nipolet" or "nipple pipette", us e Sockolet + Nipple.
T
T
T
TR
ABN
T
T
W
3/4
1
1 1/2
2
3
20
25
40
50
80
T
4
6
8
10
100 150 200 250
BRANCH DIAMETERS
HEAD DIAMETERS
GRAPH T-A14NT1 BRANCH CONNECTIONS - 1: Process Lines
DM
(mm)
20
25
40
50
80
100
150
200
250
NPS
(in)
3/4
1
1 1/2
2
3
4
6
8
10
NPS
(in)
DM
(mm)
T = Stra i ghht "T" be ve l e d e nds
T
TR = Re duce d "T" be ve l e d e nds .
T
DL = 45° La tera l Bra nch be ve l e d e nds .
T
TR
DLR = 45° La tera l Re duce d Bra nch be ve l e d e nds .
T
Note: i t i s a l l owe d thr us e of fa bri ca ted 45° La tera l s ,
DL wi th e fforts re l i e f s e a ms .
DLR DL
DLR DL
DLR DL
DLR DLR DL
DL
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
10
100 150 200 250
BRANCH DIAMETERS
GRAPH T-A14NT1 BRANCH CONNECTIONS - 2: Draining Lines
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A15T1 Hoja 1 de 5
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Allowable Corrosion:
1,6 mm (0.063 in)
See Note 1.2
Component
Notes
Sheet 146 of 5
“Dos Bocas New Refinery, Tabasco”
Industrial Installations
Service: Firefighting
Water (Freshwater). See
Note 1.14
Rev. 0
Piping Material Specification
Pressure and Temperature Limits
1875 Kpa@ -28° C to 65° C
See Note 1.1
Material: CS Thermal
Valve
Treatment and / or
Internals
Efforts Relief N.A.
Trim 8
Diameter
DN (NPS)
Thickness (in) or
Minimum Schedule /
Class
Ends
T-A15T1
RT
5%
NDT
5%
Class 150
RF Face
welding’s Box for welding for DN 50
(NPS 2) and smaller; Butt welds DN
80 (NPS 3) and larger
Description
Piping
Pipe
2.2, 2.3
2.4
20 to 65
(3/4 to 2 1/2)
80 to 350
(3 to 14)
400 (16)
and larger
80
Plan
Standard
To be calculated by
Contractor
Beveled
ASTM A106 Gr. B
ASTM A671 Gr. CA55 Class 12 (Plate
ASTM A285 Gr., with seams straight
longitudinal, (EFW), Ex = 1.0
Nipples
Nipple
Socket conc.
Socket
eccentric.
Connections
90 ° Elbow
45 ° Elbow
Straight “T”
Reduced “T”
Cross
Coupling
Reduced
Coupling
Cap Plug
Solid Bar
Cap
Elbow 90 °
long radius
Elbow 45 °
Straight “T”
Concentric
Reduction
Eccentric
Reduction Cap
Plug
3.1
3.2
4.1
4.2
4.5
5.1
20 to 65
(3/4 to 2 1/2)
20 to 50
(3/4 to 2)
20 to 65
(3/4 to 2 1/2)
20 to 65
(3/4 to 2 1/2)
80 to 600
(3 to 24)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Schedule equal to
that of the pipe
Flat / Thread
Flat / flat
Thread / bevel
Plane / Bevel
ASTM A106 Gr. B
ASTM A234 Gr. WPB, MSS SP-95
Welding box
3000
ASTM A105, ASME B16.11
3000
Schedule equal to
that of the pipe
Thread
ASTM A105, ASME B16.11, thread ASME
B1.20.1
Beveled
ASTM A234 Gr. WPB, ASME B16.9
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Elbow 90 °
long radius
Elbow 45 °
Straight “T”
Concentric
Reduction
Eccentric
Reduction
Cap Plug
5.1
5.2
Double male
connector
hydrant
intake
Sheet 147 of 5
“Dos Bocas New Refinery, Tabasco”
650 to 900
(26 to 36)
Schedule equal to
that of the pipe
Beveled
Threaded
65 (2 1/2)
Threaded
Adapter for
truck
connector /
intake
Rev. 0
150 (6)
ASTM A234 Gr. WPB-W, (Ex = 1.0)
Double male connector one end with
thread ASME B1.20.1 and another with
thread NH (7½ threads / inch), with cover
and retention chain, brass plug and
connector.
Male threaded adapter ASME B1.20.1
(NPT) and rotating NH female thread
based on bearings and with ears for
handling for the connection to the truck
hose, yellow bronze with neoprene
gasket. With male plug for the protection
of the threads and of the same material of
the adapter.
Integrally Reinforced Connectors
Threaded
Outlet
Lateral Outlet
Butt Weld
Outlet
Nipple Outlet or
Nipple pipette
Flanges
Welding Box
Flanges
Welding Neck
Flanges
6.1
6.2
6.1
6.3
3000
20 to 65
(3/4 to2 1/2)
3000
Threaded
ASTM A105, MSS SP-97
Welding Box
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
6.1
80 to 350
(3 to 14)
Schedule equal to
that of the pipe
Beveled
6.1
6.3
20 to 50
(3/4 to 2)
3000
Flat
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
RF
ASTM A105 ASME B16.5, Schedule 80
RF
ASTM A105 ASME B16.5, Schedule and
bore same as the pipe.
ASTM A105 ASME B16.47 Serie A (MSSSP44), Schedule and bore same as the
pipe.
ASTM A105 ASME B16.5.
7.2
50
(2)
80 to 600
(3 to 24)
650 to 900
(26 to 36)
20 to 600
(2 to 24)
650 to 900
(26 to 36)
Blind Flanges
150
150
150
150
150
RF
RF
ASTM A105, MSS SP-97
RF
ASTM A105 ASME B16.47 Serie A, (MSSSP44).
Welding Box
x Thread
ASTM A105, Trim 8, OS&Y, ISO 15761,
fixed handwheel, rising stem, screwed
bonnet, solid gate.
ASTM A105, Trim 8, OS&Y, ISO 15761,
fixed handwheel, rising stem, screwed
bonnet, solid gate.
ASTM A216 Gr. WCB, ASME B16.34,
Trim 8 conforming to ISO 10434, OS&Y,
fixed handwheel, rising stem, flanged
bonnet, solid or flexible gate.
Valves
Gate
Valves
8.1
20 to 50
(3/4 to 2)
800
8.1
20 to 50
(3/4 to 2)
800
8.1
8.15
80 to 600
(3 to 24)
150
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Welding Box
RF
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Project:
Gate
Valves
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 148 of 5
“Dos Bocas New Refinery, Tabasco”
8.1
650 a 900
(26 a 36)
150
RF
Floating Ball
Valves
8.1
8.16
50 a 200
(2 a 8)
150
RF
Floating Ball
Valves
8.1
8.16
250 a 300
(10 a 12)
150
RF
Check
Valves
8.1
8.4
20 a 50
(3/4 a 2)
800
Check
Valves
8.1
8.4
80 a 600
(3 a 24)
150
Nonlubricated
male / plug
type valve
8.17
65 (2 1/2)
Welding Box
RF
Threaded
ASTM A216 Gr. WCB, ASME B16.34, Trim 8
conforming to ISO 10434, OS&Y, ASME
B16.47A flanges, fixed handwheel, rising stem,
flanged bonnet.
ASTM A216 Gr. WCB, API design STD 608 /
ASME B 16.34, floating ball, full pass in DN
100 (NPS 4) and smaller operated by handle,
those of DN 150 (NPS 6) and larger operated
by gearbox, dial with 316 Stainless Steel or A351 CF8M coating.
ASTM A216 Gr. WCB, API design STD 608 /
ASME B 16.34, trunion type, full pass,
operated by gearbox, dial with stainless steel 316
or A-351 CF8M coating.
ASTM A105, Trim 8, ISO 15761, ball or piston
type for working horizontally or vertically,
screwed cover.
ASTM A216 Gr. WCB, API 594 type B, Trim 8,
flanged cover, swing type and stop integrated
to the body that limits the opening of the disc..
ASTM A216 Gr. WCB, design ASME B16.34,
single piece stem ASTM A351 Gr. CF8M,
shell anchored to the valve body and
secondary seals of polytetrafluoroethylene
(PTFE) protected with metallic diaphragm,
female threaded ends ASME B1.20.1 (NPT)
class 300, operated by handle. For hydrant
intake.
Gaskets
Gaskets
50 a 600
(2 a 24)
150
RF
Gaskets
650 a 900
(26 a 36)
150
RF
Bolts
Studs
Spiro-metallic, with centering ring (external) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of 304
Stainless Steel, ASME B16.20 for flanges
ASME B16.5, bore equal to inside diameter of
the pipe.
Spiro-metallic, with centering ring (external) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of type
304 Stainless Steel, ASME B16.20 for ASME
B16.47 Series A flanges, bore equal to inside
diameter of the pipe.
ASTM A193 Gr. B7, threads ASME B1.1
class 2A,
ASTM A194 Gr. 2H, threads ASME B1.1
class 2B,
Nuts
Miscelaneous
“T” Type filters
12.1
“Y” Type filters
80 a 900
(3 a 36)
20 a 50
(3/4 a 2)
BRANCH TABLE
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Schedule equal to
that of the pipe
600
Weldable
Welding Box
ASTM A234 Gr. WPB ASME B16.9
ASTM A105, ends ASME B16.11
T-A15T1 Branch Table
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A15T1 Hoja 3 de 5
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Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 149 of 5
“Dos Bocas New Refinery, Tabasco”
Notes:
1.1
1.2
1.14
2.2
2.3
2.4
3.2
4.1
4.2
4.5
5.1
5.2
6.1
6.2
6.3
7.2
8.1
8.4
8.15
8.16
8.17
12.1
The pressure and temperature limits of this specification are based on the range of the corresponding flange class,
indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure
and temperature restrictions recommended by the manufacturer should be consulted.
In the wall thickness that is assigned to the pipe, connections and fittings by this specification, the sacrificial
thickness is included, for the purposes of the permissible corrosion that can be tolerated during the life of these
parts.
This specification does not cover the spray system.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses
b. For pipes installed in pipe racks (raised frames) & above ground sleepers the minimum acceptable length is 12 m.
All seam pipes and connections, which are indicated in this specification, the weld must be longitudinal straight
and 100 percent radiographed.
The air-ground pipe interface must be coated with liquid epoxies of high solids resistant to ultraviolet rays, and for
underground pipes that meet the requirements of ET-026-PEMEX-2008.
a. In the sockets, the end with the largest diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50
(NPS 2); the Schedule must be equal to that of the pipe to be welded.
b. The threaded end sockets for use of pressure taps (pressure transmitters and pressure gauges), the threaded
joints must be sealed with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap plugs for terminal ends of purges and vents..
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar plugs are only allowed in openings without use, for DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate
holder flanges, seal with solder after installation.
It is forbidden to use pipe connections or field fabricated fittings, such as wedges or “fish mouths” and flat caps. All
branches must be built with factory manufactured accessories..
On all seam connections indicated in this specification, the weld must be straight longitudinal and 100 percent
radiographed.
a. Welding of the reinforced connectors to the head must be penetration in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated
in the specification is the branch.
The integrally reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after
the hydrostatic or pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed
with welding. Purges and vents that are required during startup, operation or maintenance must be Nipple Outlet or
Nipple pipette.
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet, Socket Weld Outlet, and smaller connections,
welding box welds should be inspected, with the percentage indicated in the specification.
Welding neck flanges must have the same Schedule to the pipeline to which they are to be joined..
a. On NPS 24 and smaller valves, flanges must comply with ASME B16.5 dimensions, and larger with ASME
B16.47 Series A dimensions.
b. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter
on the valve body: identification number, types of bonnet gasket and packing box packing.
c. All valve hardware (bolts and nuts) must be of the appropriate specification and compatible with the material of
the valve body.
d. Handwheels of all valves must be solid, hollow handwheels are not allowed
The check valves must be installed horizontally, to ensure the closure of the gate and prevent the return of fluids.
For network locks, it should not be used on monitors or in direct sprinkler systems.
For service of monitors and direct sprinkler systems.
For hydrant nozzles / taps of DN 65 (NPS 2½).
a. The filter element must be selected to retain particles in accordance with what is recommended for the
equipment to be protected, for Firefighting Water it must retain particles up to 3 mm (⅛ in).
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, eight figures must also be included, in addition to the
blocking valves, to ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A15T1 Hoja 5 de 5
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
HEAD DIAMETERS
Particular Technical Specification
Project:
DM
(mm)
20
25
40
50
80
100
150
NPS
(in)
3/4
1
1 1/2
2
3
4
6
200
250
300
350
400
450
500
600
650
700
750
800
900
8
10
12
14
16
18
20
24
26
28
30
32
36
NPS
(in)
DM
(mm)
Rev. 0
Sheet 150 of 5
“Dos Bocas New Refinery, Tabasco”
TC - Wel di ng Box "T"
TC
TRC= Wel di ng Box Reduced "T"
TC
TRC
T = Stra i ght "T" wi th bevel ed ends
TC
ISP = Pi pe to pi pe i ns ert
TC
T
ICP = Ins ert wi th rei nforci ng pl a te (Rei nforci ng pl a te thi cknes s s a me a s
hea der s chedul e, wi dth equa l to 1/2 the OD of the bra nch)
T
SOL
SOL = Sockol et
T
WOL = Wel dol et
T
T
T
T
T
ISP
T
WOL
T
T
1/16" Ga p
T
Ni ppol et Opti on
T
T
ICP
T
T
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
10
12
14
16
18
20
24
26
28
30
32
36
100 150 200 250 300 350 400 450 500 600 650 700 750 800 900
BRANCH DIAMETERS
GRAPH T-A15T1 - BRANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A15T1 Hoja 5 de 5
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Service: Instrument Air, Water
for showers and eyewash.
See Note 1
Component
Sheet 151 of 4
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
Notes
Diameter
DN (NPS)
T-A16T1
Pressure and Temperature Limits
1875 Kpa@ 65° C
See Note 1.1
Material: Galvanized CS. See Note 1.3
Thermal Treatment and Efforts Relief N.A.
Allowable Corrosion:
0.0 mm (0.00 in)
Rev. 0
Thickness (in) or
Minimum Schedule /
Class
Valve Internals
Trim 8
RT
5%
NDT
5%.
Class 150
RF Face
Galvanized and threaded elements
in DN 50 (NPS 2) and smaller; Butt
or beveled welds and galvanized in
DN 80 (NPS 3) and larger.
Ends
Description
80
Threaded
ASTM A106 Gr. B, Galvanized according
to ISO-1461
Standard
Beveled
ASTM A53 Gr. B Type E, (Ex. = 0.85)
80
Threaded
Schedule equal to
that of the pipe
Thread/Bevel
Thread/Thread
Piping
Pipe
1.3
20 to 50
(3/4 to 2)
80 to 400
(3 to 16)
Nipples
20 to 50
(3/4 to 2)
20 to 50
(3/4 to 2)
Nipple
Socket conc.
3.2
Socket
eccentric.
Connections
90 ° Elbow
45 ° Elbow
Straight “T”
Reduced “T”
4.1
20 to 50
Coupling
4.5
(3/4 to 2)
Reduced
Coupling
Cap Plug
Solid Bar
Cap
Elbow 90 °
long radius
Elbow 45 °
Straight “T”
80 to 400
5.1
Concentric
(3 to 16)
Reduction
Eccentric
Reduction
Cap Plug
Integrally Reinforced Connections
Threaded
Outlet
Nipple Outlet or
Nipple pipette
Flanges
Welding Neck
Flanges
Threaded
ASTM A105, ASME B16.11, with
galvanized coating ASTM A123.
Schedule equal to
that of the pipe
Beveled
ASTM A234 Gr. WPB-W, ASME B16.9
3000
6.1
20 to 50
(3/4 to 2)
3000
Threaded
6.1
20 to 50
(3/4 to 2)
3000
Flat
20 to 50
(3/4 to 2)
150
RF
80 to 400
(3 to 16)
150
Threaded
Flanges
7.2, 101
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A106 Gr. B, Galvanized
according to ISO-1461
ASTM 234 Gr. WPB Galvanized according to
ISO-1461, MSS SP-95
RF
ASTM A105, hot dip galvanized
according to ASTM A123, MSS SPspecification 97
ASTM A105, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
ASTM A105, hot dip galvanized
conforming to ASTM A123 and ASME
B16.5 specifications.
ASTM A105 ASME B16.5, Schedule and
bore equal to that of the pipe.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A16T1 Hoja 1 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Blind Flanges
Sheet 152 of 4
“Dos Bocas New Refinery, Tabasco”
80 to 400
(3 to 16)
20 to 400
(3/4 to 16)
Slip On
Flanges
Rev. 0
150
RF
ASTM A105, ASME B16.5
150
RF
ASTM A105 ASME B16.5.
Threaded
Valves
Gate
Valves
8.1
20 to 50
(3/4 to 2)
800
Gate
Valves
8.1
80 to 400
(3 to 16)
150
8.1
20 to 50
(3/4 to 2)
800
Threaded
8.1
80 to 400
(3 to 16)
150
RF
Check
Valves
8.1, 8.4
20 to 50
(3/4 to 2)
800
Check
Valves
8.1, 8.4
80 to 400
(3 to 16)
150
Globe Valves
Globe Valves
Floating Ball
Valves
Floating Ball
Valves
20 to 50
(3/4 to 2)
80 to 400
(3 to 16)
800
150
RF
Threaded
RF
Threaded
RF
ASTM A105, with galvanized coating
ASTM A123, trim 8, OS&Y, ISO 15761,
fixed handwheel, rising stem, screwed
bonnet, solid gate..
ASTM A216-WCB, with ASTM A123
galvanized coating, trim 8, OS&Y, ISO
15761, fixed handwheel, rising stem,
screwed bonnet, solid gate.
ASTM A105, with ASTM A123
galvanized coating, trim 8, OS&Y, ISO
15761, fixed handwheel, rising stem,
screwed bonnet..
ASTM A216-WCB, with ASTM A123
galvanized coating, trim 8, OS&Y, ISO
15761, fixed handwheel, rising stem,
screwed bonnet.
ASTM A105, with galvanized coating
ASTM A123, trim 8, OS&Y, ISO 15761,
ball or piston type for working in
horizontal / vertical position, screwed
cover.
ASTM A216-WCB, with galvanized
coating ASTM A123, trim 8, OS&Y, ISO
15761, ball or piston type for working in
horizontal / vertical position, screwed
cover.
ASTM A105, with 3-piece ASTM A123
galvanized coating and bolted, full-pass,
UNS S31600 stainless steel ball and
stem, RPTFE seals and seats, floating
ball, 607 / ISO 10497. API STD 608 /
ASME B16.34.
ASTM A216-WCB, with 3-piece ASTM
A123 galvanized coating, bolted, fullpass, UNS S31600 stainless steel ball
and stem, RPTFE seals and seats,
floating ball, 607 / ISO 10497. API STD
608 / ASME B16. 3. 4.
Gaskets
Gaskets
20 to 400
(3/4 to 16)
150
RF
Spiro-metallic, with centering ring
(external) of carbon steel ASTM A36 /
A36M: 2012 with anticorrosive coating,
flexible graphite filling (asbestos-free),
winding and inner ring of 304 Stainless
Steel, ASME B16.20 for flanges ASME
B16.5, bore equal to inside diameter of
the pipe.
Bolts
Studs
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A193 Gr. B7, ASME B1.1 class 2A
threads. with corrosion resistant coating
according to ET-027-PEMEX-2019.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A16T1 Hoja 3 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 153 of 4
“Dos Bocas New Refinery, Tabasco”
ASTM A194 Gr. 2H, hexagonal threads
ASME B1.1 class 2B. with corrosion
resistant coating according to ET-027PEMEX-2019.
Nuts
Miscellaneous
Eight Figures
(integral)
Eight Figures
(blind joint and
spacer
separated)
20 to 300
(3/4 to 12)
150
FF
ASTM A515 Gr. 70, ASME B16.48
350 to 400
(14 to 16)
150
FF
ASTM A515 Gr. 70, ASME B16.48
ASTM A234 Gr. WPB-W, ASME B16.9
“T” Type filters
12.1
80 to 400
(3 to 16)
150
RF
“Y” Type filters
12.1
20 to 50
(3/4 to 2)
600
Threaded
BRANCH TABLE
ASTM A105, with galvanized coating
ASTM A123, ASME B16.11, flanged
cover with threaded drain.
T-A16T1 BRANCH TABLE
Notes:
1
1.1
1.3
3.2
4.1
4.5
5.1
6.1
7.2
8.1
8.4
12.1
101
For the Instrument Air service, this Pipeline Materials Specification applies only at the express request of Pemex in
the Project or at the specification of the Technologist or Licensor.
The pressure and temperature limits of this specification are based on the range of the corresponding flange class,
indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure
and temperature restrictions recommended by the manufacturer should be consulted.
The reels must be manufactured in sections so that they can be assembled by flanged joints on site. Once
manufactured, the reels must be coated with hot dipped galvanized. Use seal tapes (Teflon), anti-stick similar to
PTFE on threads.
a. In the sockets, the end with the largest diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50
(NPS 2); the Schedule must be equal to that of the pipe to be welded.
b. The threaded end sockets for use of pressure taps (pressure transmitters and pressure gauges), the threaded
joints must be sealed with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps are only allowed in openings without use, for DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate
holders flanges.
It is forbidden to use pipe connections or field fabricated fittings, such as wedges or “fish mouths” and flat caps. All
branches must be built with factory manufactured accessories..
a. Welding of the reinforced connectors to the head must be penetration in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated
in the specification is the Branch.
Welding neck flanges must have the same Schedule to the pipeline to which they are to be attached.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with ASME B16.5 dimensions.
b. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter
on the valve body: identification number, types of bonnet gasket and packing box packing.
c. All valve hardware (bolts and nuts) must be of the proper specification to the valve body material
d. Handwheels of all valves must be solid, hollow handwheels are not allowed.
The check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of fluids to
protect upstream installations.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment
to be protected.
b. The filters must have at least 1.5 times the passage area of the pipe.
Welding neck flanges must be installed in weldable connections. In other cases, slip on flanges must be installed.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A16T1 Hoja 3 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
HEAD DIAMETERS
Particular Technical Specification
Project:
Rev. 0
Sheet 154 of 4
“Dos Bocas New Refinery, Tabasco”
DM
(mm)
20
25
40
50
80
100
150
NPS
(in)
3/4
1
1 1/2
2
3
4
6
200
250
300
350
400
8
10
12
14
16
NPS
(in)
DM
(mm)
TS = Stra i ght "T" thre a de d e ns
TS
TSR= Re duce d "T", thre de d e nds
TS
TSR
T = Stra i ght "T" wi th be ve l e d e nds
TS
I SP = pi pe to pi pe i ns e rt
TS
T
TOL = Thre a dol e t
WOL = We l dol e t
T
T
TOL
T
WOL
T
ISP
T
T
T
3/4
1
1 1/2
2
3
20
25
40
50
80
4
6
8
10
12
14
16
100 150 200 250 300 350 400
BRANCH DIAMETERS
GRAPH T-A016T1- BRANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A17T1 Hoja 2 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Component
Sheet 155 of 4
“Dos Bocas New Refinery, Tabasco”
Industrial Installations
Service: 95% Sulfuric
acid or greater.
See Note 1.11
Allowable Corrosion:
3.2 mm (0.125 in)
See Note 1.2
Rev. 0
Piping Material Specifications
T-A17T1
Pressure and Temperature Limits
RT
50 %
1920 kpa@ 50°C
See Note 1.1
Valve Internals
Alloy 20 (UNS
N08020)
Material: CS
Notes
Diameter
DN (NPS)
Thickness (in) or
Minimum Schedule /
Class
2.10
20 to 50
(3/4 to 2)
80
Beveled
2.2
80 to 200
(3 to 8)
Standard
Beveled
3.1
25 to 50
(1 to 2)
Schedule equal
to that of the pipe
Ends
NDT
50 %
Class 150
RF Face
Butt welds
Description
Piping
Pipe
ASTM A106 Gr. B, ASME B36.10
Nipples
Nipple
Connections
Cap
Plug
Solid Bar
Cap
4.2
4.5
90 ° Elbow
Three radius
90 ° Elbow
long radius
45 ° Elbow
Straight “T”
Reduced “T”
Concentric
Reduction
Eccentric
Reduction
5.1
5.1
25 to 50
(1 to 2)
25 to 50
(1 to 2)
25 to 50
(1 to 2)
80 to 200
(3 to 8)
25 to 50
(1 to 2)
80 to 200
(3 to 8)
25 to 200
(1 to 8)
25 to 200
(1 to 8)
Integrally Reinforced Connections
6.1
Threaded
6.2
Outlet
25 to 50
Lateral to45°
6.1
(1 to 2)
Nipple Outlet or
Nipple pipette
Flanges
Welding Neck
Flanges
3000
Threaded
Threaded
Schedule equal
to that of the pipe
Schedule equal
to that of the pipe
3000
6.1
7.2
Bevel / Bevel
ASTM A106 Gr. B, ASME B36.10
Bevel / Thread
Beveled
Beveled
ASTM A234 Gr. WPB, beveled ends or,
twice pipe ASTM A106 Gr. B.
ASTM A234 Gr. WPB, seamless ASME
B16.9
ASTM A234 Gr. WPB, seamless ASME
B16.9
ASTM A234 Gr. WPB, seamless ASME
B16.9
Threaded
ASTM A105, MSS SP-97
Beveled
Flat
25 to 200
(1 to 8)
150
RF
Blind Flanges
Long Neck
Flanges
Orifice Plate
Holder Flanges
ASTM A105, ASME B16.11, thread ASME
B1.20.1
ASTM A105, ASME B16.11, thread ASME
B1.20.1
ASTM A234 Gr. WPB or twice pipe ASTM
A106Gr. B.
ASTM A234 Gr. WPB, ASME B16.9
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105 ASME B16.5, Schedule and
bore equal to that of the pipe.
ASTM A105 ASME B16.5.
7.4
25 to 50
(1 to 2)
300
RF
ASTM A105, ASME B16.5.
7.3
50 to 600
(2 to 24)
300
RF
ASTM A105, ASME B16.36, welding neck, bore
equal to pipe inside diameter.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A17T1 Hoja 2 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 156 of 4
“Dos Bocas New Refinery, Tabasco”
Valves
Gate
Valves
8.1
8.14
25 to 50
(1 to 2)
150
Gate
Valves
8.1
8.14
80 to 200
(3 to 8)
150
Globe Valves
8.1
8.14
25 to 50
(1 to 2)
150
Globe Valves
8.1
8.14
80 to 200
(3 to 8)
150
Check
Valves
8.1
8.4
8.14
25 to 50
(1 to 2)
150
Check
Valves
8.1
8.4
8.14
80 to 200
(3 to 8)
150
RF
8.1
8.6
8.20
8.21
80 to 200
(3 to 8)
150
RF
25 to 200
(1 to 8)
150
RF
25 to 200
(1 to 8)
300
For orifice plate
holder flanges
RF
Butterfly Valves
RF
RF
RF
RF
RF
ISO 15761 design. Body, bonnet and
internals alloy 20 (34% Ni, 20% Cr) (UNS
N08020), solid gate, bolted bonnet, standard
yoke, fixed handwheel and rising stem, alloy
20, ASTM B148 UNS C95600 stem nut,
bolting same as body material..
ASME B16.34 design, body, bonnet and
internals alloy 20 (34% Ni, 20% Cr) (UNS
N08020), flexible wedge, flanged bonnet,
standard yoke, fixed handwheel and
ascending stem, alloy 20, ASTM stem nut
B148 UNS C95600, hardware (bolts and
nuts) same as body material.
ISO 15761 design. Alloy 20 body, bonnet
and internals (34% Ni, 20% Cr) (UNS
N08020), bolted bonnet, standard yoke,
movable disk, handwheel and rising stem,
alloy 20, ASTM B148 UNS C95600 stem
nuts, bolting same as body material.
ASME B16.34 design. Alloy body, bonnet
and internals 20 (34% Ni, 20% Cr) (UNS
N08020), flanged bonnet, standard yoke,
movable disc, handwheel and alloy 20 rising
stem, ASTM B148 UNS C95600 stem nut,
hardware (bolts and nuts) same as body
material.
ISO 15761 design. Alloy 20 body, lid and
internals (34% Ni, 20% Cr) (UNS N08020),
piston type, screwed cover, bolting same
body material, install horizontally.
API 594 type B design. Body, lid and
internals alloy 20 (34% Ni, 20% Cr) (UNS
N08020), piston type (¾ in to 2 in Ø) and
swing type with stop to limit the rotation and
opening of the hinge, flanged cover, bolting
same as body material, install horizontally.
Alloy 20 body and internals (34% Ni, 20% Cr)
(UNS N08020), triple eccentricity, solid onepiece seal ring, integral body seat, metalmetal seal, API 609 category B design, fire
resistant ISO 10497. Flanged body. The
design must comply with 8.2.1 and 8.10 of
the ET-204-PEMEX-2019..
Gaskets
Gaskets
Gaskets
9.1
Bolts
Studs
Nuts
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Spiro-metallic, with centering ring (external)
of carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of
304 Stainless Steel, ASME B16.20 for
flanges ASME B16.5, bore equal to the
inside diameter of the pipe.
ASTM A193 Gr. B7, ASME B1.1 class 2A
threads.
ASTM A194 Gr. 2H, threads ASME B1.1
class 2B.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A17T1 Hoja 2 de 4
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Particular Technical Specification
Project:
Miscellaneous
Eight Figures
(integral)
“T” Type filters
11.1
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 157 of 4
“Dos Bocas New Refinery, Tabasco”
25 to 200
(1 to 8)
25 to 200
(1 to 8)
Branch Connections
150
RF
Schedule equal to
that of the pipe
Beveled
ASTM A515 Gr. 70, ASME B 16.48
ASTM A234 Gr. WPB, seamless
Graph T-A17T1 Branch Connections
Notes:
1.1
1.2
1.11
2.2
2.10
3.1
4.2
4.5
5.1
6.1
6.2
7.2
7.3
7.4
8.1
8.4
8.6
8.14
8.20
8.21
9.1
11.1
The pressure and temperature limits of this specification are based on the range of the corresponding flange class,
indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure
and temperature restrictions recommended by the manufacturer should be consulted.
In the wall thickness that is assigned to the pipe, connections and fittings by this specification, the sacrificial
thickness is included, for the purposes of the permissible corrosion that can be tolerated during the life of these
parts..
In the sulfuric acid service, the application of this specification for maximum conditions, flow rate 1.2 meters / sec (4
ft / s) is restricted.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses.
b. Pipes installed in pipe racks (raised frames) and above ground sleepers the minimum acceptable length is 12 m.
Welds in DN 50 (NPS 2) and smaller must be by GTAW (Argon) process, using welding (SMAW) is forbidden.
Threaded joints must be NPT (ASME B1.20.1) and sealed with welding, except where threaded plugs are installed.
Cap plugs for terminal ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar cap plugs are only allowed in openings without use, in DN 20 to DN 50 (NPS ¾ to 2), and in orifice plate
holder flanges, seal with welding after installation.
It is forbidden to use pipe connections or field fabricated fittings, such as wedges or “fish mouths” and flat caps. All
the Branches must be built with factory manufactured accessories.
a. Welding of reinforced connectors to the head must be fully penetrated in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated
in the specification is the Branch.
The integrally reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after
the hydrostatic or pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed
with welding. Purges and vents that are required during startup, operation or maintenance must be Nipple Outlet or
Nipple pipette.
Weld neck flanges must have the same ID as the pipe to which they will be attached.
The orifice plate holder flanges and pipe flanges Schedule must be the same bore and thickness as to the pipe to
be attached. Before welding, the flange must be aligned to the tube and there should be no steps. After welding you
must grind and polish the inner weld (mirror finish), there should be no restrictions, bumps or sinking. All threaded
joints (nipples and solid bar plugs) must be sealed with welding.
In long neck flanges for thermowell taps, the inner diameter must be specified to match the outer diameter of the
thermowell and ensure insertion, Class 300 is the minimum allowed.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with ASME B16.5 dimensions.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter
on the valve body: identification number, types of bonnet gasket and packing box packing.
d. All valve hardware (bolts, nuts) must be of the proper specification to the valve body material
e. Handwheels of all valves must be solid, hollow handwheels are not allowed.
The check valves must be installed horizontally with the lid on top, to ensure the closure of the gate and prevent the
return of the fluids.
It is forbidden to use ear valves or bipartition type installed between flanges.
Valves must be manufactured in one piece. Body Split body type are not accepted.
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must be
manufactured in one piece.
The packing of the packing box must be graphite for cryogenic and fire-resistant service.
For use on long neck flanges and orifice plate holder flanges.
The suction and discharge of pumps inlet and outlet lines of heat exchangers and compressors, in battery limits,
direct fired heaters, filters that use filter elements of cartridges and all that equipment that is required to isolate by
frequent maintenance, must count with permanent reversible eight figures.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A18T1 Hoja 1 de 4
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Particular Technical Specification
Project:
HEAD DIAMETERS
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 158 of 4
“Dos Bocas New Refinery, Tabasco”
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment
to be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, figures eight must also be included, additional to the
blocking valves, to ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
DM
(mm)
25
40
50
80
100
150
200
250
NPS
(in)
1
1 1/2
2
3
4
6
8
10
NPS
(in)
DM
(mm)
T = Stra i ghht "T" bevel ed ends
T
TR = Reduced "T" bevel ed ends , Stra i ght "T" + Reducer, or Reduced "T" + Reduction.
N = Ni pol et or Ni ppl e Pi pette
T
T
TR
**
T
N
T
T
Thi s s peci fi ca tion prohi bi ts ma ki ng di rect i ns ets or wi th rei nforcement
pl a tes , i nva ri a bl y connectors mus t be us ed (Stra i ght "T", Reduced "T",
Stra i ght "T"s + Reductions ) or, Integra l l y Rei nforced Connectors
(Wel dol et, Ni pol et or Ni ppl e Pi pette).
OR
T
TRC
1
1 1/2
2
3
25
40
50
80
4
6
T
8
10
100 150 200 250
BRANCH DIAMETERS
GRAPH T-A17T1 BRANCH CONNECTIONS
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A18T1 Hoja 1 de 4
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ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
Service: Low pressure
steam, steam condensate.
Component
Sheet 159 of 4
“Dos Bocas New Refinery, Tabasco”
Industrial Installations
Allowable Corrosion:
1.6 mm (0.063 in)
See Note 1.2
Notes
Piping
Pipe
Rev. 0
T-A18T1
Pressure and Temperature Limits
1065 kPa@ 288°C
See Note 1.1
Material: CS
Valve
Thermal Treatment and Efforts Relief N.A.
Internals
Trim 8
Diameter
Thickness (in) or
Ends
DN (NPS)
Minimum Schedule /
Class
20 to 50
(3/4 to 2)
80
2.2
80 to 600
(3 to 24)
2.2
Nipple
Socket conc.
Socket eccentric.
NDT
Class 150
5%
RF Face
See Note 6.3
welding’s Box welds for DN 50
(NPS 2) and smaller; Butt welds
DN 80 (NPS 3) and larger.
RT
5%
Description
Flat
ASTM A106 Gr. B
To be calculated by
Contractor
Beveled
ASTM 53 Gr. B, Type E (Ex=0.85)
650 to 750
(26 to 30)
To be calculated by
Contractor
Beveled
API 5L Gr. B DSAW, with seams,
longitudinal straight, (Ex. = 0.95))
3.1
20 to 50
(3/4 to 2)
80
Flat / Thread
Flat / Flat
3.2
20 to 50
(3/4 to 2)
Schedule equal to
that of the pipe
Thread / Bevel
20 to 50
(3/4 to 2)
3000
20 to 50
(3/4 to 2)
3000
80 to 600
(3 to 24)
Schedule equal to
that of the pipe
Nipples
Connections
90 ° Elbow
45 ° Elbow
Straight “T”
Reduced “T”
Cross
Coupling
Reduced
Coupling
Cap Plug
Solid Bar Plug
Elbow 90 ° long
radius
45 ° Elbow
Straight “T”
Reduced “T”
Concentric
Reduction
Eccentric
Reduction
4.1
4.2
4.5
5.1
650 to 750
(26 to 30)
80 to 600
(3 to 24)
Integrally Reinforced Connections
Threaded Outlet
6.1, 6.2
Socket Weld Outlet
20 to 50
(3/4 to 2)
6.1, 6.3
Lateral Outlet
Cap Plug
5.1
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Schedule equal to
that of the pipe
Schedule equal to
that of the pipe
3000
ASTM A106 Gr. B
ASTM A234 Gr. WPB, MSS SP-95
Flat / Bevel
Welding Box
Threaded
ASTM A105, ASME B16.11
ASTM A105, ASME B16.11, thread ASME
B1.20.1
Beveled
ASTM A234 Gr. WPB, ASME B16.9
Beveled
ASTM A234 Gr. WPB-W, (Ex. =0.95) ASME B16.9
Beveled
ASTM A234 Gr. WPB, ASME B16.9
Threaded
ASTM A105, MSS SP-97
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
Welding
Box
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A18T1 Hoja 1 de 4
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Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Butt Weld Outlet
Nipple Outlet or
Nipple pipette
Flanges
Welding Box
Flanges
Welding Neck
Flanges
6.1
6.1, 6.3
7.6
7.2
7.6
Blind Flanges
Orifice Plate
Holder Flanges
Long Neck
Flanges
Valves
Gate
Valves
Gate
Valves
Globe Valves
Globe Valves
Check
Valves
Check
Valves
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 160 of 4
“Dos Bocas New Refinery, Tabasco”
80 to 250-500 Schedule equal to
(3 to 10-20)
that of the pipe
20 to 50
3000
(3/4 to 2)
20 to 50
(3/4 to 2)
150
Beveled
ASTM A105, MSS SP-97
Flat
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
RF
ASTM A105, ASME B16.5, Schedule 80
ASTM A105, ASME B16.5, Schedule and
bore equal to that of the pipe.
80 to 600
(3 to 24)
150
RF
650 to 750
(26 to 30)
ASTM A105 ASME B16.47 Series A (MSSSP44), thickness and bore equal to that of
the pipe.
20 to 600
(3/4 to 24)
ASTM A105, ASME B16.5.
150
650 to 750
(26 to 30)
RF
ASTM A105 ASME B16.47 Series A (MSS-SP44).
7.3
50 to 600
(2 to 24)
300
RF
ASTM A105, ASME B16.36, welding neck, bore
equal to that of the pipe.
7.4
25 to 50
(1 to 2)
300
RF
ASTM A105, ASME B16.5.
8.1
8.18
20 to 50
(3/4 to 2)
800
80 to 600
(3 to 24)
150
20 to 50
(3/4 to 2)
800
80 to 300
(3 to 12)
150
20 to 50
(3/4 to 2)
800
80 to 600
(3 to 24)
150
Beveled
20 to 600
(3/4 to 24)
150
RF
25 to 600
(1 to 24)
300
RF
8.1
8.9
8.18
8.1
8.18
8.1
8.9
8.18
8.1
8.4
8.18
8.1
8.4
8.9,8.18
Welding
Box
Beveled
Welding
Box
Beveled
Welding
Box
ASTM A105, Trim 8, OS&Y, ISO 15761, fixed
handwheel, rising stem, welded bonnet, solid
wedge..
ASTM A216 Gr. WCB, Trim 8, OS&Y, ISO
10434, Fixed hand wheel, rising stem,
screwed bonnet, flexible wedge.
ASTM A105, Trim 8, OS&Y, ISO 15761,
handwheel and rising stem, welded bonnet.
ASTM A216 Gr. WCB, Trim 8 conforming to
API STD 623, OS&Y, ASME B16.34,
handwheel and rising stem, bolted bonnet..
ASTM A105, Trim 8, ISO 15761, ball or
piston type for horizontal / vertical position,
cover screwed.
ASTM A216 Gr. WCB, Trim 8, API 594 type B,
screwed cover, swing type and stop integrated
to the body that limits the opening of the disc..
Gasket
9.1
Gasket
650 to 750
(26 to 30)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
150
RF
Spiro-metallic, with centering ring (external)
Carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filler
(asbestos-free), winding and inner ring of type
304 Stainless Steel, ASME B16.20 for ASME
B16.5 flanges, bore equal to the inside
diameter of the pipe.
Spiro-metallic, with centering ring (external)
made of carbon steel ASTM A36 / A36M: 2012
with anticorrosive coating filled with flexible
graphite (asbestos-free), winding and inner ring
made of 304 Stainless Steel, ASME B16.20 for
ASME
flanges
B16.47A
(MSS-SP44).
Threaded ends, ASTM A193 Gr. B7, ASME
B1.1 class 2A threads.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A19T1 Hoja 2 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Rev. 0
Sheet 161 of 4
“Dos Bocas New Refinery, Tabasco”
Bolts
Threaded ends, ASTM A193 Gr. B7, threads
ASME B1.1 class 2A.
ASTM A194 Gr. 2H, threads ASME B1.1 class
2B.
Studs
Nuts
Miscellaneous
Eight Figures
(integral)
Eight Figures
(blind joint and
spacer separated)
20 to 300
(3/4 to 12)
“Y” Type filters
12.1
“Y” Type filters
350 to 600
(14 to 24)
20 to 50
(3/4 to 2)
80 to 100
(3 to 4)
BRANCH TABLE
150
RF
ASTM A515 Gr. 70, ASME B 16.48
150
RF
ASTM A515 Gr. 70, ASME B 16.48
Welding Box
3000
Schedule equal to
that of the pipe
Beveled
ASTM A105, ends ASME B16.11
ASTM A105 o ASTM A216 Gr. WCB
T-A18T1 Branch Table
Notes:
1.1
1.2
2.2
3.1
3.2
4.1
4.2
4.5
5.1
6.1
6.2
6.3
7.2
7.3
7.4
7.6
The pressure and temperature limits of this specification are based on the range of the corresponding flange class,
indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure
and temperature restrictions recommended by the manufacturer should be consulted.
In the wall thickness that is assigned to the pipe, connections and fittings by this specification, the sacrificial
thickness is included, for the purposes of the permissible corrosion that can be tolerated during the life of these
parts.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses.
b. For pipes installed in pipe racks (raised frames) and above ground sleepers the minimum acceptable length of the
pipe is 12 m.
The threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where cap plugs are
installed.
a. In the sockets, the end of greater diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS
2); the Schedule must be equal to that of the pipe to be welded.
b. The threaded end sockets for use of pressure taps (pressure transmitters and pressure gauges), the threaded
joints must be sealed with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap plugs for terminal ends of purges and vents.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps are only allowed in openings without use, for DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate
holder flanges, seal with welding after installation.
It is forbidden to use pipe connections or field fabricated fittings, such as wedges or “fish mouths” and flat caps. All
the Branches must be built with factory manufactured accessories.
a. Welding of the reinforced connectors to the head must be penetration in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated
in the specification is the branch.
The integrally reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after
the hydrostatic or pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed
with welding. Purges and vents that are required during startup, operation or maintenance must be Nipple Outlet or
Nipple pipette.
For integrally reinforced Nipple Outlet, Nipple pipette, Lateral Outlet, Socket Weld Outlet, and smaller connections,
welding box welds should be inspected, in accordance with the percentage indicated in the pipe specification.
Welding neck flanges must have the same Schedule as to the pipeline to which they are to be joined.
The orifice plate holder flanges and pipe flanges to which they are to be attached must have the same bore and
thickness. Before welding, the flange must be aligned to the tube and there should be no steps. After welding, the
inner weld must be ground and polished (mirror finish), there should be no restrictions, bumps or sinking. All threaded
joints (nipples and solid bar plugs) must be sealed with welding.
In long neck flanges for thermowell taps, the inner diameter must be specified to match the outer diameter of the
thermowell and ensure insertion, Class 300 is the minimum allowed..
The use of flanges in steam services should be minimized, only allowed where its use is technically justified.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A19T1 Hoja 2 de 4
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
8.1
8.4
8.9
8.18
9.1
HEAD DIAMETERS
12.1
Rev. 0
Sheet 162 of 4
“Dos Bocas New Refinery, Tabasco”
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5, and the
larger ones with ASME B16.47 Series A.
b. The manufacturer must specify on a stainless-steel metal plate label, attached to the body and with impact letter
on the valve body: identification number, types of bonnet gasket and packing box packing.
c. All valve hardware (bolts and nuts) must be of the proper specification to the valve body material
d. Handwheels of all valves must be solid, hollow handwheels are not allowed.
The check valves must be installed horizontally, to ensure the closure of the gate and prevent the return of fluids.
Bevel ends must be for joints with thicknesses equal to those of pipes.
The packing of the packing box and the half body of the valves must be special for steam service (graphite).
For use on long neck flanges and orifice plate holder flanges
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment
to be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, figures eight must also be included, additional to the
blocking valves, to ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
DM
(mm)
20
25
40
50
80
100
150
200
250
300
350
400
450
500
600
650
700
750
800
900
1000
1050
1150
1200
NPS
(in)
3/4
TC
1
TC
1 1/2
TRC
TC
2
3
4
6
8
10
SOL
12
14
16
18
20
24
1/16" Gap
26
28
30
32
36
40
42
46
48
NPS (in) 3/4
1 1 1/2
DM
20 25
40
(mm)
TC - Wel di ng Box "T"
TRC= Wel di ng Box Reduced "T"
T = Stra i ght "T" wi th bevel ed ends
ISP = Pi pe to pi pe Ins ert
TC
ICP = Ins ert wi th rei nforci ng pl a te (rei nforci ng pl a te wi th s chedul e the s a me a s the
hea der a nd wi dth s a me to ha l f of OD of bra nch)
T
T
SOL = Sockol et
T
WOL = Wel dol et
T
T
ISP
T
T
T
T
T
T
WOL
T
T
T
T
ICP
T
T
T
T
2
3
50
80
4
6
8
10
12
14
16
100 150 200 250 300 350 400
18
20
24
26
28
30
32
450 500 600
650
700
750
800
36
40
42
46
T
48
900 1000 1050 1150 1200
BRANCH DIAMETERS
GRAPH T-A18T1 - BRANCH CONNECTIONS
Note: Tube-to-tube grafts welded directly to the head must be analyzed in particular, and reinforced if required, in accordance
with ASME B31.3 304.3
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A19T1 Hoja 2 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUBDIRECTION
ET-032-PEMEX-2019
18/03/2019
Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Piping Material Specification
T-A19T1
Pressure and Temperature Limits
Service: Acid Gas
Component
Sheet 163 of 4
“Dos Bocas New Refinery, Tabasco”
Industrial
Installations
1380 kpa@ 200°C
Allowable Corrosion:
5.0 mm (0.200 in)
See Note 1.2
See Note 1.1
Material: CS “Passivated”
Thermal Treatment and Efforts Relief
Yes See Note 1.3
See
Notes
Rev. 0
Diameter
DN (NPS)
Thickness (in) or
Minimum Schedule /
Class
RT
33 %
NDT
33 %
See Note 6.2
Class 150
RF Face
Valve Internals
Trim 10
Ends
Description
Piping
2.10
Pipe
2.2
Nipples
Nipple
25 to 50
(1 to 2)
80 to 100
(3 to 4)
150 (6)
200 to 400
(8 to 16)
450 (18)
500 to 600
(20 to 24)
25 to 50
(1 to 2)
Connections
4.2
25 to 50
Cap Plug
4.3
(1 to 2)
Solid Bar Plug
Elbow 90 °
long radius
45 ° Elbow
Straight “T”
25 to 600
Reduced “T”
5.1
(1 to 24)
Concentric
Reduction
Reduction
Eccentric
Cap Plug
Integrally Reinforced Connections
25 to 50
Lateral Outlet
6.1
(1 to 2)
Butt Weld
6.1
80 to 250
Outlet
(3 to 10)
Nipple Outlet or
Nipple pipette
Flanges
Welding Neck
Flanges
6.1
7.2
Bling Flanges
Orifice Plate
Holder Flanges
Long Neck
Flanges
25 to 50
(1 to 2)
80 to 600
(3 to 24)
25 to 600
(1 to 24)
160
Beveled
80
0.312
Beveled
ASTM A106 Gr. B, ASME B36.10.
160
Beveled
ASTM A106 Gr. B, ASME B36.10.
6000
Threaded
Schedule equal to
that of the pipe
Beveled
6000
Beveled
Schedule equal to
that of the pipe
Beveled
6000
Beveled
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4).
150
RF
ASTM A105, ASME B16.5, Schedule and
bore equal to that of the pipe.
150
RF
ASTM A105, ASME B16.5.
Standard
30
XS – Extra Strong
ASTM A105, ASME B16.11, thread ASME
B1.20.1
ASTM A234 Gr. WPB, Seamless ASME
B16.9
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4), ISO 15156-2
ASTM A105, MSS SP-97.
7.3
50 to 600
(2 to 24)
300
RF
ASTM A105, ASME B16.36, welding neck,
bore equal to that of the pipe.
7.4
25 to 50
(1 to 2)
300
RF
ASTM A105, ASME B16.5.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Technical Specification
Piping Systems in Industrial Plants Design and Material Specifications
Particular Technical Specification
Project:
Rev. 0
Sheet 164 of 4
“Dos Bocas New Refinery, Tabasco”
Valves
Gate Valves
8.1
8.9
25 to 50
(1 to 2)
800
Beveled
Gate Valves
8.1
8.3
80 to 600
(3 to 24)
150
RF
8.1
8.9
25 to 50
(1 to 2)
800
Beveled
8.1
(80 to 300)
3 to 12
150
RF
8.1
8.4
8.9
25 to 50
(1 to 2)
800
Beveled
8.1
8.4
80 to 600
(3 to 24)
150
RF
8.1, 8.6
8.20
8.21
80 to 600
(3 to 24)
150
RF
25 to 600
(1 to 24)
150
25 to 600
(1 to 24)
300
For orifice plate
holder flanges
Globe Valves
Globe Valves
Check Valves
Check Valves
Butterfly
Valves
ASTM A105, Trim 10, OS&Y, ISO 15761,
fixed handwheel, rising stem, screwed
bonnet, solid gate.
ASTM A216 Gr. WCB, Trim 10, OS&Y,
ISO 10434, Fixed handwheel, rising
stem, flanged bonnet, solid gate.
ASTM A105, Trim 10, OS&Y, ISO 15761,
handwheel and rising stem, bolted
bonnet..
ASTM A216 Gr. WCB, Trim 10
conforming to API STD 623, OS&Y,
ASME B16.34, handwheel and rising
stem, flanged bonnet.
ASTM A105, Trim 10, ISO 15761, ball or
piston type for working horizontally /
vertically, screwed cover.
ASTM A216 Gr. WCB, Trim 10, API 594
type B, flanged cover, swing type and
stop integrated to the body that limits the
opening of the disc.
ASTM A216 Gr. WCB, triple eccentricity,
solid one-piece seal ring, integral body
seat, metal-metal seal, API 609 category
B design, ISO 10497 fireproof. Flanged
body. The design must comply with 8.2.1
and 8.10 of ET-204- PEMEX-2019.
Gaskets
Gaskets
9.1
RF
Bolts
Studs
Spiro-metallic, with centering ring (external) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), winding and inner ring of 304
Stainless Steel, ASME B16.20 for flanges
ASME B16.5, bore equal to the inside
diameter of the pipe.
ASTM A193 Gr. B7M, threads ASME B1.1
class 2A.
ASTM A194 Gr. 2HM, threads ASME B1.1
class 2B.
Nuts
Miscellaneous
Eight Figures
(integral)
Eight Figures
(blind joint and
spacer
separated)
“T Type filters
11.1
25 to 300
(1 to 12)
150
RF
ASTM A515 Gr. 70, ASME B 16.48
11.1
350 to 600
(14 to 24)
150
RF
ASTM A515 Gr. 70, ASME B 16.48
12.1
80 to 600
(3 to 24)
Schedule equal to
that of the pipe
Beveled
Branch Connections
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A234 Gr. WPB, Seamless
Graph T-A19T1 Branch Connections
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Particular Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 165 of 4
“Dos Bocas New Refinery, Tabasco”
Notes:
1.1
1.2
1.3
2.2
2.10
4.2
4.3
5.1
6.1
7.2
7.3
7.4
8.1
The pressure and temperature limits of this specification are based on the range of the corresponding flange class,
indicated in ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure
and temperature restrictions recommended by the manufacturer should be consulted.
In the wall thickness that is assigned to the pipe, connections and fittings by this specification, the sacrificial
thickness is included, for the purposes of the permissible corrosion that can be tolerated during the life of these
parts.
Heat Treatment and Relief of stresses, apply NACE SP0472 in all the components of the Pipe System.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress
analysis.
b. For pipes installed in pipe racks (raised frames) and above ground sleepers the minimum acceptable length is 12 m.
Welds in DN 50 (NPS 2) and smaller must be by GTAW (Argon) process, using welding (SMAW) is forbidden.
Cap plugs for terminal ends of purges and vents.
Weld threaded joints must be sealed with welding.
It is forbidden to use pipe connections or field fabricated fittings, such as wedges or “fish mouths” and flat caps. All
the Branches must be built with factory manufactured accessories.
a. Welding of reinforced connectors to the head must be fully penetrated in accordance with ASME code B31.3.
b. Head diameter and branch diameter in integrally reinforced connectors must be specified. The diameter indicated
in the specification is the branch.
Welding neck flanges must have the same Schedule as the pipeline to which they are to be joined.
The orifice plate holder flanges and pipe flanges to be joined must have the same bore and thickness. Before
welding, the flange must be aligned to the tube and there should be no steps. After welding, the inner weld must be
ground and polished (mirror finish), there should be no restrictions, bumps or sinking. All threaded joints (nipples
and solid bar plugs) must be sealed with welding.
Long neck flanges for thermowell taps, the inner diameter must be specified to relate it to the outer diameter of the
thermowell and ensure insertion, Class 300 is the minimum allowed.
a. For DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal label plate, attached to the body and with impact letter on the valve
body: identification number, types of bonnet gasket and packing box packing.
8.3
8.4
8.5
8.6
8.9
8.20
8.21
9.1
11.1
12.1
d. All valve hardware (bolts and nuts) must be of the proper specification to the valve body material
e. Handwheels of all valves must be solid, hollow handwheels are not allowed.
DN 50 gate valves (NPS 2) with flanged ends, the flanges and body must be in one piece (not welded), they are
only allowed in equipment nozzles for instrument sockets such as magnetic and optical level indicators, level
transmitters.
The check valves must be installed horizontally with the lid on top, to ensure the closure of the gate and prevent the
return of the fluids.
a. Ball-type valve mounted on trunion, energized seats, bidirectional seats, soft seal polyamide (nylon or PTFE), Internal: carbon
steel dial with electrolytic nickel coating 0.003 in, ASTM A322 Gr. 4140 (UNS stem) G41400), AISI 410SS stainless steel seats ,
soft seal polyamide (nylon) [120 ° C (248 ° F) or PTFE 180 ° C (356 ° F)].
b. Welded body valves should be inspected by radiography and / or 100 percent ultrasound according to ASME Section VIII div. 1.
c. Valves DN 50 to DN 100 (NPS 2 to NPS 4) operated by lever in DN 150 (NPS 6) & larger supplied with double speed gear box
It is forbidden to use ear valves or bipartition disc type installed between flanges.
The beveled ends must be so that they join with thicknesses equal to those of the pipes.
Butterfly valves are for isolating large inventory containers. When they are extended bonnet, this must be
manufactured in one piece..
The packing of the packing box must be graphite for cryogenic and fire-resistant service
For use on long neck flanges and orifice plate holder flanges..
The suction and discharge of pumps inlet and outlet lines of heat exchangers and compressors, in battery limits,
direct fired heaters filters that use filter elements of cartridges and all that equipment that are required to be isolated
for frequent maintenance, must have permanent reversible eight figures.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment
to be protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, eight figures must be included, additionally to the blocking
valves, to ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Specific Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 166 de 214
“New Refinery in Dos Bocas, Tabasco”
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-A20T1 Hoja 1 de 4
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Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Sheet 167 de 214
T-A20T1
Pipe Materials Specification
Service: Fire water (Fresh
water, dry section)
Rev. 0
“New Refinery in Dos Bocas, Tabasco”
Industrial facilities
Pressure and temperature limits
1824 kpa @ 82°c
See Note 1.1
Material: Galvanized Carbon Steel
See Note 1.3 and 1.9
Heat and Relief Treatment of
Efforts N.A.
DN diameter Minimum thickness
Notes
(NPS)
(in) or Certificate /
Class
Allowable corrosion:
0.0 mm (0.0 in) See
Note 1.2, 1.11
Component
ET-032-PEMEX-2019
18/03/2019
Trim 8 valve
internals
RT
5%
NDT
5%
Class 150
RF face
Threaded joints in DN 50 (NPS 2) and smaller;
butt welds in DN 80 (NPS 3) and higher
Extremes
Description
Pipeline
Tube
1.3
20 to 50
(3/4 a 2)
80
Threaded
ASTM A106 Gr. B, hot dip galvanized conforming
to ASTM A123
80 a 400
(3 a 16)
STD
Beveled
ASTM A53 Gr. B, Type E (Ex = 0.85) hot dip
galvanized conforming to ASTM A123
80
Threaded
ASTM A106 Gr. B, hot dip galvanized
conforming to ASTM A123
Nipple
20 to50
(3/4 to 2)
Nipple
Concentric
Swage.
Eccentric
Swage
Connections
90 ° elbow
45 ° elbow
T straight you
T Couple
reduced
Couple reduced
Reducer inserts
Cap
Solid bar stopper
3.2
20 to 50
(3/4 ato2)
20 to 50
(3/4 to 2)
Schedule Same as
the pipeline
3000
Thread /
bevel
ASTM A234 Gr. WPB, MSS SP-95, hot dip
galvanized conforming to ASTM A123, MSS SP-95
Threaded
ASTM A105, hot dip galvanized conforming to ASTM
A123, ASME B16.11
Beveled
ASTM A234 Gr. WPB -W, ASME B16.9.
Beveled
ASTM A105, MSS SP- 97
Beveled
ASTM A105, MSS SP- 97
4.2
Elbow 90 ° long
radius
45 ° elbow
T straight
80 to 400
1.3
(3 to 16)
T Reduced
Concentric
reduction
Eccentric
Reduction
Cap
Integrally reinforced connections
6.1a
20 to 50
Threaded Outlet
6.1b
(3/4 to 2)
6.1a
80 to 350
Butt Weld Outlet 6.1b
(3 to 14)
6.3
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Schedule Same
as the pipeline
3000
Schedule Same
as the pipeline
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
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Project:
Nipple Outlet or
Nipple pipette
6.1a
6.1b
6.3
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 168 de 214
“New Refinery in Dos Bocas, Tabasco”
20 to 50
(3/4 to 2)
3000
Threaded
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
20 to 50
(3/4 to 2)
150
RF
ASTM A105, hot dip galvanized conforming to
ASTM A123, ASME B16.5
80 to 400
(3 to 16)
150
RF
ASTM A105, ASME B16.5.
80 to400
(3 to 16)
150
RF
ASTM A105, ASME B16.5
20 to 400
(3/4 to 16)
150
RF
ASTM A105, hot dip galvanized conforming to
ASTM A123, ASME B16.5.
7.4
20 to 50
(3/4 to 2)
300
RF
ASTM A105, ASME B16.5
8.1
20 to 50
(3/4 to 2)
800
Threaded
80 to 400
(3 to 16)
150
RF
Flanges
Threaded flange
Sliding Flanges
(slip on)
Weld neck flanges
7.2, 101
Blind flanges
Long neck flanges
Valves
Gate
Valves
8.1
ASTM A105, Trim 8, OS&Y, ISO 15761, fixed
steering wheel, rising stem, Threaded bonnet, solid
gate.
ASTM A216 Gr. WCB, ASME B16.34, Trim 8
conforming to ISO 10434, OS&Y, fixed steering
wheel, rising stem, flanged bonnet, solid gate.
Operated with a 2½ ”to 14” steering wheel and a 16
”gear operator.
ASTM A216 Gr. WCB, API STD 608 / ASME B16.34
design, Threaded body, floating ball, full step.
Stainless steel dial Type 316 or carbon steel with
0.003 in electrolytic nickel coating, RPTFE seats,
fireproof API SPC 6FA, ISO 10497. DN 100 (NPS 4)
and hand operated minor DN 150 (NPS 6 ) and
older operated with gearbox,
Floating Ball
Valves
8.1
50 to 300
(2 to 12)
150
RF
Check
Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
Threaded
ASTM A105, Trim 8, ISO 15761, ball or piston type
for working in horizontal / vertical position, Threaded
cover.
Check
Valves
8.1
8.4
80 to 400
(3 to 16)
150
RF
ASTM A216 Gr. WCB, API 594 type B, Trim 8,
Threaded cover, swing type and stop integrated
to the body that limits the opening of the disc.
RF
Spiro-metallic, with metal centering ring (outer)
and inner ring, flexible graphite filling, curl and
stainless-steel rings. Type 304, ASME B16.20 for
ASME B16.5 flanges, 1/8 ”esp.
Gasket
Gasket
20 to 400
(3/4 to 16)
150
Screws
Studs
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A193 Gr. B7, ASME B1.1 class 2A
threads. with corrosion resistant coating
according to ET-027-PEMEX-2019
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Project:
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18/03/2019
Rev. 0
Sheet 169 de 214
“New Refinery in Dos Bocas, Tabasco”
Nuts
ASTM A194 Gr. 2H, hexagonal, thread ASME
B1.1 class 2B. with corrosion resistant coating
according to ET-027-PEMEX-2019
Miscellaneous
Y type filters
Y type filters
20 to 50
(3/4 to 2)
80 to 300
(3 to 12)
BRANCH CHART
600
Threaded
150
RF
ASTM A105, ASME B16.11 ends, stainless steel
mesh. 304, 0.036 in openings
ASTM A216 Gr. WCB, stainless steel mesh. 304,
0.036-inch openings
T-A20T1 BRANCH TABLE
Notes:
1.1
1.3
1.9
1.11
2.11
3.2
4.2
6.1a
6.1b
6.3
7.2
7.4
8.1
The pressure and temperature limits of this specification are based on the range of the corresponding flange class, indicated in ASME
B16.5. However, certain components allowed by this specification may be limited, so the pressure and temperature restrictions
recommended by the manufacturer should be consulted.
The reels must be manufactured in sections so that they can be assembled by flanged joints on site. Once manufactured, the reels must
be coated with hot-dip galvanized according to the ASTM-A153 and ASTM-A385 specification. Use seal tapes, anti-stick similar to PTFE
on threads.
The minimum galvanizing thickness is 0.127 mm (0.005 in), with the dip galvanizing process according to ASTM A90 standard
The permissible corrosion for pipes with a diameter less than or equal to DN 50 (NPS 2) should be considered equal to 0.0 mm.
The carbon steel pipe, galvanized by immersion, should be applied with a single component modified vinyl primary finish (approved
according to the CFE-P21 specification), in color Red Signal RAL 3001 of 0.127 mm (0.005 in) thick .
to. In the softens, the end of greater diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS 2); the ID must be
equal to that of the pipe to be welded. The threaded end sockets for use of pressure taps (pressure transmitters and pressure gauges),
the threaded joints must be sealed with welding.
Cap for ends of purges and vents.
Welding of reinforced connectors with the head must be fully penetrated according to ASME code B31.3.
Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the specification is the branch.
Welded joints in connections with weld box ends, the fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Threaded Outlet
connectors must be inspected according to the percentage indicated in the pipe specification and index of pipe materials.
Weld neck flanges must have the same pipeline to which they will be attached.
Long neck flanges for thermowell intakes, the inner diameter must be specified to relate it to the outer diameter of the thermowell and
ensure insertion, the minimum allowed Class is 300.
a. On DN 400 (NPS 16) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. The manufacturer must specify on a stainless-steel metal label, attached to the body and with a blow letter on the valve body:
identification number, types of bonnet gasket and stuffing box packing.
c. All valve hardware must be of the proper specification to the valve body material
d. Flywheels of all valves must be solid, hollow flywheels are not allowed.
8.4
Check valves must be installed horizontally or vertically with upward fluid, to ensure the closure of the gate and prevent fluid backflow.
101
Weld neck flanges must be installed in weldable connections. In other cases, sliding flanges must be installed
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
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correspondientes
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Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 170 de 214
“New Refinery in Dos Bocas, Tabasco”
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
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Project:
Allowable corrosion:
0 mm (0 in) Note 1.3
Component
Notes
Rev. 0
Sheet 171 of 4
“New Refinery in Dos Bocas, Tabasco”
Industrial facilities
Service:
Noncorrosive
hydrocarbons, Methane,
Ethane, Propane, Butane,
Methanol, Pentane.
Apply Note 1.1
ET-032-PEMEX-2019
18/03/2019
Pipe Materials Specification
T-B01T3
Pressure and temperature limits
See Note 1.2
Material: Type T304
Relief of efforts N.A.
RT
20 %
Class 300
RF
Welding’s of welding box in DN 50 (NPS 2)
and smaller; butt welds DN 80 (NPS 3) and
greater
Valve internals
Trim 12
DN diameter Minimum thickness (in)
(NPS)
or Certificate / Class
NDT
Additional
See Note
6.3
Extremes
Description / Material
Pipeline
2.1
2.2
Pipe
2.2
20 to 50
(3/4 to 2)
80 to 150
(3 to 6)
200 to 450
(8 to 18)
500 to 600
(20 to 24)
80S
Flat
ASTM A312 Gr. TP304, S/C, ASME B36.19M
Beveled
ASTM A312 Gr. TP304, S/C, ASME B36.19M
10S
40S
80S
Nipple
Nipple (online)
Concentric
Swage.
Eccentric
Swage.
Connections
90 ° elbow
45 ° elbow
Tee straight
Reduced Tee
Cross
CoupleCouple
Reduced
Cap-cap
Solid rod cap
Street elbow
3.1
20 to 50
(3/4 to 2)
3.2
20 to 50
(3/4 to 2)
4.1
20 to 50
(3/4 to 2)
4.2
4.3
4.5
4.3
4.5
80S
Schedule Same as
the pipeline
Welding box
3000
20 to 50
(3/4 to 2)
Elbow 90 °
long radius
45 ° elbow
long radius
Tee straight
80 to 600
5.1
Reduced tee
(3 to 24)
Concentric
Reduction
Eccentric
Reduction
Cap Plug
Integrally reinforced connections
Threaded
6.1
20 to 50
Outlet
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
For welding
/ thread +
welding
For welding
/ thread +
welding
Threaded
3000
ASTM A403 Gr. WP304, MSS SP-95
ASTM A182 Gr. F304, ASME B16.11
ASTM A182 Gr. F304, ASME B16.11, ASME
B1.20.1 thread
ASTM A182 Gr. F304, ASME B16.11, threads
(female-male ASME B1.20.1)
Schedule Same as
the pipeline
3000
ASTM A312 Gr. TP304, S/C
Beveled
ASTM A403 Gr. WP304, S/C, ASME B16.9
Beveled-
ASTM A182 Gr. F304, MSS SP-97
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B01T3 Hoja 1 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Socket Weld
Outlet
Lateral Outlet
Butt Weld
Outlet
Nipple Outlet
Flanges
Welding
box flanges
Weld neck
flanges
(3/4 to 2)
6.1
6.3
20 to 50
(3/4 to 2)
3000
6.1
6.3
20 to 50
(3/4 to 2)
3000
6.1
80 to 250
(3 to 10)
6.1
6.3
20 to 50
(3/4 to 2)
7.2
Blind flanges
Hole plate
carrier flanges
Rev. 0
Sheet 172 of 4
“New Refinery in Dos Bocas, Tabasco”
6.2
7.1
ET-032-PEMEX-2019
18/03/2019
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
20 to 600
(3/4 to 24)
Schedule Same as
the pipeline
Threaded
BeveledWelding
box
BeveledWelding
box
Beveled
ASTM A182 Gr. F304, MSS SP-97
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
ASTM A182 Gr. F304, MSS SP-97
3000
Flat
bevel
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
300
RF
300
RF
300
RF
ASTM A182 Gr. F304, ASME B16.5.
ASTM A182 Gr. F304, ASME B16.5, Schedule
Same as the pipeline.
ASTM A182 Gr. F304, ASME B16.5, Schedule
Same as the pipeline.
7.3
50 to 600
(2 to 24)
300
RF
ASTM A182 Gr. F304, ASME B16.36, weldable
neck, bore equal to the pipe.
7.4
25 to 50
(1 to 2)
300
RF
ASTM A182 Gr. F304, ASME B16.5.
Gate
Valves
8.1
8.13
8.19
20 to 50
(3/4 a 2)
800
Welding
box
Gate
Valves
8.1, 8.3
8.13 8.19
80 to 600
(3 to 24)
300
RF
Globe valves
8.1, 8.13
8.21
20 to 50
(3/4 to 2)
800
Welding
box
Globe valves
8.1
8.21
80 to 300
(3 to 12)
300
RF
Check
Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
Welding
box
Check
Valves
8.1
8.4
80 to 600
(3 to 24)
300
RF
8.1, 8.6
8.20
8.21
80 to 600
(3 to 24)
300
RF
Long neck
flange
Valves
Butterfly valve
ASTM A182 Gr. F304, ISO 15761, Trim 12, OS&Y,
fixed flywheel, rising stem, flanged bonnet, solid
gate with pressure equalizer hole.
ASTM A351 Gr. CF8, ISO 10434, Trim 12, OS&Y,
Fixed flywheel, rising stem, flanged bonnet, with
pressure equalizer hole, wedge to be specified by
PEMEX in the project.
ASTM A182 Gr. F304, ISO 15761, Trim 12, OS&Y,
Steering wheel and rising stem, flange bonnet.
ASTM A351 CF8, ASME B16.34, Trim 12
conforming to API STD 623, OS&Y, flywheel and
rising stem, flanged bonnet.
ASTM A182 F304, ISO 15761, Trim 12, ball or
piston type to work horizontally / vertically, flanged
cover.
ASTM A351 CF8, API STD 594 type B, Trim 12,
flanged cover, swing type and stop integrated to
the body that limits the opening of the disc.
ASTM A351 CF8, API 609 category B, triple
eccentricity, solid one-piece seal ring, integral
body seat, metal-metal seal, fireproof ISO
10497. Design must comply with 8.2.1 and 8.10
of the ET-204-PEMEX- 2012.
Gasket
Gasket
20 to 600
(3/4 to 24)
300
RF
Spiro-metallic, with centering ring (outer) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), curl and inner ring of stainlesssteel type 304, ASME B16.20 for flanges ASME
B16.5
Screws
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B01T3 Hoja 2 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 173 of 4
“New Refinery in Dos Bocas, Tabasco”
ASTM A193 Gr. B8 Class 2, ASME B1.1 class
2A threads.
ASTM A194 Gr. 8, ASME B1.1 class 2A
threads.
Studs
Nuts
Miscellaneous
Figures eight
(integral)
Figures eight
(blind joint and
spacer
separated)
Tee filters
11.1
20 to 300
(3/4 to 12)
300
RF
ASTM A240 Gr. 304, ASME B16.48
11.1
350 to 600
(14 to 24)
300
RF
ASTM A240 Gr. 304, ASME B16.48
20 to 50
(3/4 to 2)
3000
Welding
box
ASTM A182 Gr. F304, ASME B16.11 ends
80 to 600
(3 to 24)
Schedule Same as the
pipeline
Weldable
ASTM A351 CF8, S / C, weldable ends
12.1
Branch Connections
Graph T-B01T3 Branch Connections
Notes:
1.1
1.2
1.3
2.1
2.2
3.1
3.2
4.1
4.2
4.3
4.5
5.1
5.3
6.1
6.2
6.3
7.1
7.2
7.3
a. For these services, this Specification of Materials for Pipeline, applies only under the express request of Pemex in the Project
or by specification of the Technologist or Licensor.
b. For the Operating limits conditions of the service and Pressure and Temperature Limits, according to the Range of the Flange
Class (ASME B16.5) see EMT index. However, it may be limited for certain components allowed by this specification. Refer to
pressure and temperature restrictions that limit codes.
c. The slaughter thickness for permissible corrosion effects, which can be tolerated during the life of these parts, is included in the
wall thickness assigned by this specification to the pipe, fittings and fittings.
d. At least DN 20 (NPS ¾) is allowed in pipes
e. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses.
f. For pipes installed in pipe corridors (raised frames) and Cement Stand the minimum acceptable length is 12 m.
Threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where cap plugs are installed.
a. In the Swages the end of greater diameter is restricted to DN 100 (NPS 4) and the ID must be equal to that of the pipe to be
welded. In the reduced part, the thickness or ID must be equal to the diameter of the pipe of this specification.
b. Threaded end Swages for use of pressure taps (pressure transmitters and pressure gauges) and threaded joints must be sealed
with solder.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap for ends of purges and vents.
Weld threaded joints
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps allowed in unused openings of DN 20 to DN 50 (NPS 3/4 to 2) are allowed, as in orifice plate carrier flanges,
seal with solder after installation
The use of pipe connections or "improvised" fittings such as wedge plugs or "fish mouth" and flat caps is prohibited. All branches must be
built with factory accessories..
Eccentric reduction with upwards for pump suction (do not use concentric reduction).
a. Welding of the connectors reinforced with the head must be fully penetrated according to ASME code B31.3.
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the specification is
the branch.
The use of the fully reinforced Threaded Outlet connector is limited for purges and vents that must be removed after the hydrostatic or
pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed with a threaded joint. Purges and vents
that are required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
In the fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlets connectors, weld box welds must be
inspected, according to the percentage indicated in the pipe specification and index of pipe materials.
Welding box flanges must correspond to the pipeline ID.
Weld neck flanges must have the same pipeline to which they are to be joined.
The orifice plate and pipe flanges to which they will be joined must be of the same bore and thickness. Before welding, the flange must
be aligned to the tube, no steps should be left. After welding, rectify the inner weld (mirror finish), there should be no restrictions, bumps
or sinking. Seal with a weld bead must be applied to all threaded joints (nipples and solid bar plugs)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B01T3 Hoja 3 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
7.4
8.1
8.3
8.4
8.6
8.13
8.19
8.20
8.21
11.1
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 174 de 214
“New Refinery in Dos Bocas, Tabasco”
For long neck flanges for thermowell intakes, the inner diameter must be specified to match the outer diameter of the thermowell and
ensure insertion, Class 300 is the minimum allowed.
a. On DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal label, attached to the body and with a blow letter on the valve body:
identification number, types of bonnet gasket and stuffing box packing.
d. All valve hardware must be of the proper specification to the valve body material.
e. Flywheels of all valves must be solid, hollow flywheels are not allowed
DN 50 (NPS 2) gate valves with flanged ends, flanges and body must be in one piece (not welded), only allowed in equipment no zzles
for instrument sockets such as magnetic and optical level indicators, transmitters of level.
Check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of fluids to protect upstream
installations.
It is forbidden to use ear valves or bipartite disc type installed between flanges.
The valves must be installed with the rod in a horizontal position, so that in case of falling of the cookie does not disable the safety valve
or the release head
In the gate they must be supplied with a pressure equalizing orifice 3 mm (1/8 in.) In diameter of the fluid containment side and indicate
on the valve body with an arrow the side of higher pressure. The packing of the stuffing box must be graphite for cryogenic a nd fireresistant service.
Butterfly valves are for insulating large inventory containers. When they have an extended bonnet, it must be manufactured in one
piece.
The packing of the stuffing box must be graphite for cryogenic and fire-resistant service
The suction and discharge of pumps inlet and outlet lines of heat exchangers and compressors, in battery limits, direct fire heaters,
filters that use filter elements of cartridges and all that equipment that require to be isolated by frequent maintenance, must have
definitive reversible figures.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected..
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, additional figures must be included in the eight valves to ensure their total
isolation.
d. The filters must have at least 1.5 times the passage area of the pipe
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B01T4 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Component
Sheet 175 de 214
Pipe Materials Specification
T-B01T4
RT
20 %
Pressure and temperature limits
See Note 1.2
Notes
Rev. 0
“New Refinery in Dos Bocas, Tabasco”
Industrial facilities
Service:
Noncorrosive
hydrocarbons,
Methane, Ethane,
Propane, Butane,
Methanol, Pentane.
Apply Note 1.1
Permissible corrosion:
1.6 mm (.0625 in) See
Note 1.3
ET-032-PEMEX-2019
18/03/2019
Material: CS 3.5% Ni
Internal Valves:
Heat Treatment and Relief of
Trim 10
efforts: N.A.
Minimum
DN
Extremes
thickness (in) or
diameter
Certificate / Class
(NPS)
NDT
Additional
See Note
6.3 Charpy
Impact
a -60°C
Class 300
RF
Welding’s of welding box in DN 50 (NPS
2) and smaller; butt welds DN 80 (NPS 3)
and greater
Description
Pipeline
2.1
2.2
2.3
20 a 50
(3/4 a 2)
2.2
2.3
80 a 150
(3 a 6)
200 a 250
(8 a 10)
300 a 350 (12
a 14)
400 (16)
450 (18)
500 a 600
(20 a 24)
Tube
80
Flat
ASTM A333 Gr. 3, S/C, ASME B36.10M
Beveled
ASTM A333 Gr. 3, S/C, ASME B36.10M
ASTM A333 Gr. 3, S/C, ASME B36.10M
STD
30
STD
0.406
0.469
30
Nipple
Nipple (online)
Concentric
Swage.
Eccentric
Swage.
Connections
90 ° elbow
45 ° elbow
Tee straight
Reduced Tee
Cross
Couple
CoupleReduced
Tee straight
Cap Plug
3.1
15 to 50
(1/2 to 2)
80
For
welding /
thread +
welding
3.2
15 to 50
(1/2 to 2)
Schedule Same as
the pipeline
For
welding /
thread +
welding
ASTM A420 Gr. WPL3, MSS SP-95
4.1
15 to 50
(1/2 to 2)
3000
Welding
box
ASTM A350 Gr. LF3, ASME B16.11
4.1
4.3
15 (1/2)
3000
Threaded
3000
Threaded
4.2
Solid bar
stopper
Street elbow
4.2
4.5
Elbow 90 °
long radius
5.1
4.5
15 to 50
(1/2 to 2)
15 to 50
(1/2 to 2)
20 to 50
(3/4 to 2)
80 to 600
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Threaded
3000
Schedule Same as the
pipeline
Threaded
Beveled
ASTM A350 Gr. LF3, ASME B16.11, ASME
B1.20.1 thread
ASTM A350 Gr. LF3, ASME B16.11, ASME
B1.20.1 thread
ASTM A350 Gr. LF3, ASME B16.11, ASME
B1.20.1 thread
ASTM A350 Gr. LF3, ASME B16.11, threads
(female-male ASME B1.20.1)
ASTM A420 Gr. WPL3, S/C, ASME B16.9.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B01T4 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
45 ° elbow
Tee straight
Reduced tee
Concentric
Reduction
Eccentric
Reduction
Cap Plug
Lateral Outlet
Butt Weld
Outlet
Nipple Outlet
Flanges
Welding
box flanges
Weld neck
flanges
Sheet 176 de 214
(3 to 24)
3000
BeveledThreade
d
BeveledWelding
box
BeveledWelding
box
ASTM A350 Gr. LF3, MSS SP-97.
6.1
6.3
20 to 50
(3/4 to 2)
3000
6.1
6.3
20 to 50
(3/4 to 2)
3000
6.1
80 to 250
(3 to 10)
Schedule Same as
the pipeline
6.1
6.3
20 to 50
(3/4 to 2)
3000
Flat
bevel
300
RF
300
RF
300
RF
ASTM A350 Gr. LF3, ASME B16.5.
7.1
7.2
Blind flanges
Hole plate
carrier flanges
Rev. 0
“New Refinery in Dos Bocas, Tabasco”
Integrally reinforced connections
6.1
20 to 50
Threaded
6.2
(3/4 to 2)
Outlet
Socket Weld
Outlet
ET-032-PEMEX-2019
18/03/2019
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
20 to 600
(3/4 to 24)
Beveled
ASTM A350 Gr. LF3, MSS SP-97.
ASTM A350 Gr. LF3, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
ASTM A350 Gr. LF3, MSS SP-97.
ASTM A350 Gr. LF3, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
ASTM A350 Gr. LF3, ASME B16.5 Schedule Same
as the pipeline.
ASTM A350 Gr. LF3, ASME B16.5 Schedule
Same as the pipeline.
7.3
50 to 600
(2 to 24)
300
RF
ASTM A350 Gr. LF3, ASME B16.5, Schedule
Same as the pipeline
7.4
25 to 50
(1 to 2)
300
RF
ASTM A350 Gr. LF3, ASME B16.5.
Gate
Valves
8.1
8.13
8.19
15 to 50
(1/2 to 2)
800
Welding
box
Gate
Valves
8.1
8.3
8.13 8.19
80 to 600
(3 to 24)
300
RF
Globe valves
8.1
8.13
8.21
20 to 50
(3/4 to 2)
800
Welding
box
Globe valves
8.1
8.21
80 to 300
(3 to 12)
300
RF
Check
Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
Welding
box
Check
Valves
8.1
8.4
80 to 600
(3 to 24)
300
RF
Long neck
flange
Valves
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A350 Gr. LF3, ISO 15761, Trim 10,
OS&Y, fixed steering wheel, rising stem, flanged
bonnet, solid gate with pressure equalizer hole.
ASTM A352 Gr. LC3, ASME B16.34, Trim 10
conforming to ISO 10434, OS&Y, fixed steering
wheel, ascending stem, flanged bonnet, with
pressure equalizer hole. wedge to be specified
by PEMEX in the project.
ASTM A350 Gr. LF3, ISO 15761, Trim 10,
OS&Y, flywheel and rising stem, flanged bonnet.
ASTM A352 Gr. LC3, ASME B16.34, Trim 10
conforming to API STD 623, OS&Y, flywheel and
rising stem, flange bonnet.
A350 Gr. LF3, ISO 15761, Trim 10, ball or piston
type to work horizontally / vertically, flanged
cover.
ASTM A352 Gr. LC3, API STD 594 type B, Trim
10, flanged cover, swing type and stop integrated
to the body that limits the opening of the disc.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B01T4 Hoja 2 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Butterfly valve
8.1, 8.6
8.20
8.21
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 177 de 214
“New Refinery in Dos Bocas, Tabasco”
80 to 600
(3 to 24)
300
300
ASTM A352 Gr. LC3, API 609 category B, triple
eccentricity, solid one-piece seal ring, integral
body seat, metal-metal seal, fireproof ISO
10497. Design must comply with 8.2.1 and 8.10
of the ET-204-PEMEX-2012.
Gasket
20 to 600
(3/4 to 24)
Gasket
300
RF
Spiro-metallic, with centering ring (outer) of carbon
steel ASTM A36 / A36M: 2012 with anticorrosive
coating, flexible graphite filling (asbestos-free), curl
and inner ring of stainless-steel type 304, ASME
B16.20 for flanges ASME B16.5
Screws
Studs
Threaded ends, ASTM A320-L7, ASME B1.1
class 2A threads.
Nuts
ASTM A194 Gr. 4. ASME B1.1 class 2A threads
Miscellaneous
Figures eight
(integral)
Figures eight
(blind joint and
spacer
separated)
Tee filters
11.1
20 to 300
(3/4 to 12)
300
RF
ASTM A350 Gr. LF3, ASME B16.5.
11.1
350 to 750
(14 to 30)
300
RF
ASTM A350 Gr. LF3, ASME B16.5.
12.1
80 to 600
(3 to 24)
20 to 50
(3/4 to 2)
Branch Connections
Schedule Same as
the pipeline
3000
Weldable
ASTM A352 Gr.LC3, S / C, weldable ends
Welding
box
ASTM A350 Gr. LF3, ASME B16.11 ends
Graph T-B01T4 Branch Connections
Notes:
1.1
1.2
1.3
2.1
2.2
2.3
3.1
3.2
4.1
4.2
4.3
4.5
5.1
5.3
6.1
For these services, this Specification of Materials for Pipeline, applies only under the express request of Pemex in the Project or
by specification of the Technologist or Licensor.
For the Operating limits conditions of the service and Pressure and Temperature Limits, according to the Range of the Flange
Class (ASME B16.5) see EMT index. However, it may be limited for certain components allowed by this specification. Refer to
pressure and temperature restrictions that limit codes.
The slaughter thickness is included in the wall thickness that is assigned to the pipe, connections and fittings for this specification,
for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
In pipes, DN 20 (NPS 3/4) is the minimum allowed.
to. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress analysis.
b. For pipes installed in pipe corridors (raised frames) and Cement Stand the minimum acceptable length is 12 m.
Welds between dissimilar materials are prohibited in the case of change of specification, this must be done on the flanges.
a. In the Swage, the end of greater diameter is restricted to DN 100 (NPS 4) and the ID must be equal to that of the pipe to be
welded. In the reduced part the thickness or ID must be of equal diameter to that of the pipe of this specification.
b. The threaded end Swage for use of pressure taps (pressure transmitters and gauges), the threaded joints must be sealed with
welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap for ends of purges and vents.
Weld threaded joints
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps are only allowed in openings without use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate carrier flanges, seal with solder
after installation.
It is forbidden to use pipe connections or "improvised" fittings such as wedges or "fish mouths" and flat caps. All branches must
be built with factory accessories.
Eccentric Reduction with flat face up for pump suction (concentric reduction should not be used).
a. Welding of the connectors reinforced with the head must be fully penetrated in accordance with ASME code B31.3.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B01T4 Hoja 3 de 5
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Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
6.2
6.3
7.1
7.2
7.3
7.4
8.1
8.3
8.4
8.6
8.13
8.19
8.20
8.21
11.1
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 178 de 214
“New Refinery in Dos Bocas, Tabasco”
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the specification is
the branch.
The fully reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the hydrostatic or pneumatic
test. Once the test is completed, they must be closed with a solid bar plug and sealed with a threaded joint. Purges and vent s that are
required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
In the fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlet connectors, weld box welds must be inspected,
according to the percentage indicated in the pipe specification and index of pipe materials.
Welding box flanges must correspond to the pipeline ID.
Weld neck flanges must have the same pipeline to which they are to be joined.
The orifice plate and pipe flanges to be joined must have the same bore and thickness. Before welding, the flange must be aligned to the
tube, and there should be no steps. After welding, the inner weld (mirror finish) must be ground and polished, there should b e no
restrictions, bumps or sinking. All threaded joints (nipples and solid bar plugs) must be sealed with solder.
For long neck flanges for thermowell intakes, the inner diameter must be specified to match the outer diameter of the thermow ell and
ensure insertion, Class 300 is the minimum allowed.
a. On DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal label, attached to the body and with a blow letter on the valve body:
identification number, types of bonnet gasket and stuffing box packing.
d. All valve hardware must be of the proper specification to the valve body material
e. Flywheels of all valves must be solid, hollow flywheels are not allowed.
DN 50 (NPS 2) gate valves with flanged ends, flanges and body must be in one piece (not welded), only allowed in equipment no zzles
for instrument sockets such as magnetic and optical level indicators, transmitters of level.
Check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of fluids to protect upstream
installations.
It is forbidden to use ear valves or bipartite disc type installed between flanges.
The valves must be installed with the rod in a horizontal position, so that in case of falling of the cookie does not disable the safety valve
or the vent head.
In the gate they must be supplied with a pressure equalizing hole 3 mm (1/8 in.) In diameter from the fluid containment side and indicated
on the valve body with an arrow indicating the side of greatest pressure. The packing of the cable glands should be graphite for cryogenic
and fire-resistant service.
Butterfly valves are for insulating large inventory containers. When they have an extended bonnet, it must be manufactured in one piece.
The packing of the cable glands should be graphite for cryogenic and fire-resistant service.
The suction and discharge of pumps inlet and outlet lines of heat exchangers and compressors, in battery limits, direct fire heaters, filters
that use filter elements of cartridges and all that equipment that are required to insulate for frequent maintenance, must ha ve definitive
reversible figures.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, they must be included in addition to the blocking valves, figures eight to ensure
their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B01T4 Hoja 4 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
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Specific Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 179 de 214
“New Refinery in Dos Bocas, Tabasco”
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B01T4 Hoja 5 de 5
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Specific Technical Specification
Project:
Sheet 180 de 214
Pipe Materials Specification
Service: Liquid benzene,
Phosphate, Nitrogen
Component
Rev. 0
“New Refinery in Dos Bocas, Tabasco”
Industrial facilities
Allowable corrosion:
1.6 mm (0.0625 in)
See Note 1.2
ET-032-PEMEX-2019
18/03/2019
Pressure and temperature limits
See Note 1.1
Material: CS
Thermal Treatment and Relief of
efforts
See Note 1.3
Ver
DN
Minimum thickness
Notes
diameter
(in) or Certificate /
(NPS)
Class
RT
33 %
Internal
Valves:
Trim 5
Extremes
T-B02T1
Additional NDT
% see EMT
Class 300
index
RF face
See Note 6.3
Welding’s of welding box in DN 50 (NPS 2)
and smaller; butt welds DN 80 (NPS 3) and
greater
Description
Pipeline
2.1, 2.2
Tube
2.2
2.2, 2.3
20 to 50
(3/4 to 2)
80 to 350
(3 to 14)
400 (16)
450 to 500
(18 to 20)
600 (24)
650 (26)
0.625
0.5
750(30)
0.625
80
Flat
STD
ASTM A106 Gr. B, ASME B36.10
40
XS
Beveled
ASTM A672 Gr. B70 (Plate ASTM A515 Gr. 70), Class
12, C / C longitudinal straight, EFW, RT 100%, Ex =
1.0
Nipple
Nipple (online)
Concentric
Swage
Eccentric
Swage.
Connections
90 ° elbow
45 ° elbow
Tee straight
Reduced tee
cross
Couple
Cople Reduced
Cap Plug
3.1
20 to 50
(3/4 to 2)
3.2
20 to 50
(3/4 to 2)
3.2
20 to 50
(3/4 to 2)
4.1
20 to 50
(3/4 to 2)
Schedule Same
as the pipeline
For
welding /
thread +
welding
To
weld
Welding
box
3000
4.2
Solid bar stopper
4.2
4.5
Street elbow
4.5
Elbow 90 ° long
radius
5.1
5.1
5.2
45 ° elbow
For
welding /
thread +
welding
5.1
20 to 50
(3/4 to 2)
3000
Threaded
ASTM A106 Gr. B, ASME B36.10
ASTM A234 Gr. WPB, MSS SP-95
ASTM A234 Gr. WPB, MSS SP-95
ASTM A105, ASME B16.11
ASTM A105, ASME B16.11, ASME B1.20.1
thread
ASTM A105, ASME B16.11, ASME B1.20.1
thread
ASTM A105, ASME B16.11, threads (femalemale ASME B1.20.1)
80 to 600
(3 to 24)
650 to 750
(26 to 30)
80 to 600
(3 to 24)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A234 Gr. WPB, S/C, ASME B16.9
Schedule Same
as the pipeline
Beveled
Schedule Same
as the pipeline
Beveled
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A234 Gr. WPB, S/C, ASME B16.9
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B02T1 Hoja 1 de 5
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Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 181 de 214
“New Refinery in Dos Bocas, Tabasco”
5.1
5.2
650 to 750
(26 to 30)
Tee straight
80 to 600
5.1
(3 to 24)
Reduced tee
5.1
650 to 750
5.2
(26 to 30)
Concentric
80 to 600
5.1
(3 to 24)
Reduction
5.1
650 to 750
5.2
(26 to 30)
Tee straight
80 to 600
5.1
(3 to 24)
Reduced tee
5.1
650 to 750
5.2
(26 to 30)
Concentric
5.1
80 to 600
5.3
(3 to 24)
Reduction
5.1,5.2
650 to 750
5.3
(26 to 30)
80 to 750
(3 to 30)
5.1
Cap Plug
5.2
650 to 750
(26 to 30)
Integrally reinforced connections
6.1
20 to 50
Threaded Outlet
6.2
(3/4 to 2)
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A234 Gr. WPB, S/C, ASME B16.9
Schedule Same as
the pipeline
Beveled
Schedule Same as
the pipeline
Beveled
Schedule Same as
the pipeline
Beveled
Schedule Same as
the pipeline
Beveled
Schedule Same as
the pipeline
Beveled
3000
BeveledThreade
d
BeveledWelding
box
BeveledWelding
box
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A234 Gr. WPB, S/C, ASME B16.9
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A234 Gr. WPB, S/C, ASME B16.9
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A234 Gr. WPB, S/C, ASME B16.9
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A234 Gr. WPB, S/C, ASME B16.9
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A105, MSS SP-97
6.1
6.3
20 to 50
(3/4 to 2)
Lateral Outlet
6.1
6.3
20 to 50
(3/4 to 2)
Butt Weld Outlet
6.1
Nipple Outlet
6.1
6.3
80 to 250
(3 to 10)
20 to 50
(3/4 to 2)
7.1
20 to 50
(3/4 to 2)
300
7.2
80 to 600
(3 to 24)
300
ASTM A105 ASME B16.5, Schedule and bore
equal to that of the pipe.
7.2
650 to 750
(26 to 30)
300
ASTM A105 ASME B16.47A (MSS-SP-44),
Schedule and bore equal to that of the pipe.
Socket Weld
Outlet
Flanges
Welding box
flanges
Weld neck
flanges
Blind flanges
Hole plate
carrier flanges
Long neck flange
7.3
7.4
20 to 600
(3/4 to 24)
650 to 750
(26 to 30)
50 to 600
(2 to 24)
25 to 50
(1 to 2)
Schedule Same
as the pipeline
3000
300
Beveled
Flat
bevel
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105 ASME B16.5
RF
ASTM A105 ASME B16.5.
ASTM A105 ASME B16.47A (MSS-SP44)
300
ASTM A105, ASME B16.36, weldable neck, bore
equal to that of the pipe.
ASTM A105, ASME B16.5.
300
300
Valves
Gate
Valves
8.1
20 to 50
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
800
Welding
box
ASTM A105, ISO 15761, Trim 5, OS&Y, fixed
steering wheel, ascending stem, flanged bonnet,
solid gate.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B02T1 Hoja 2 de 5
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Specific Technical Specification
Project:
Silent Check
Valves (Non
slam), axial flow
Butterfly valve
Rev. 0
Sheet 182 de 214
“New Refinery in Dos Bocas, Tabasco”
8.1
8.3
80 to 600
(3 to 24)
300
RF
8.1
650 to 750
(26 to 30)
300
RF
8.1
20 to 50
(3/4 to 2)
800
Welding
box
8.1
80 to 300
(3 to 12)
300
RF
8.1
8.4
20 to 50
(3/4 to 2)
800
Welding
box
8.1
8.4
8.6
80 to 600
(3 to 24)
300
RF
8.1, 8.4
8.24
100 to 600
(4 to 24)
300
RF
8.1, 8.6
8.20
8.21
80 to 600
(3 to 24)
300
RF
Globe valves
Check
Valves
ET-032-PEMEX-2019
18/03/2019
ASTM A216 Gr. WCB, ISO 10434, Trim 5, OS&Y,
fixed steering wheel, rising stem, flanged bonnet,
solid or flexible wedge.
ASTM A216 Gr. WCB, ASME B16.34, Trim 5
conforming to ISO 10434, OS&Y, ASME B16.47A
flanges, fixed steering wheel, rising stem, flanged
bonnet, solid or flexible wedge.
ASTM A105, ISO 15761, Trim 5, OS&Y, flywheel
and rising stem, flange bonnet.
ASTM A216 Gr. WCB, ASME B16.34, Trim 5
conforming to API STD 623, OS&Y, flywheel and
rising stem, flange bonnet.
ASTM A105, ISO 15761, Trim 5, ball or piston type
for working horizontally / vertically, flanged cover.
ASTM A216 Gr. WCB, API STD 594 type B, Trim
5, flanged cover, swing type and stop integrated to
the body that limits the opening of the disc.
ASTM A216 WCB body and nozzle, ISO 14313,
ASTM A276 Type 410-disc arrow, ASTM A105 disc
or plug, ASTM A276 Type 410 spring, AISI 410
seats, ASTM A276 Type 410 anti-rotation bolt.
Axial stopper and axial spring water hammer Metalmetal seal.
ASTM A216 Gr. WCB, API 609 category B, triple
eccentricity, solid one-piece seal ring, integral body
seat, metal-metal seal, fireproof ISO 10497.
Design must comply with 8.2.1 and 8.10 of the ET204-PEMEX-2012.
Gasket
20 to 600
(3/4 to 24)
Gasket
650 to 750
(26 to 30)
Gasket
300
RF
300
RF
Spiro-metallic, with centering ring (outer) of carbon
steel ASTM A36 / A36M: 2012 with anticorrosive
coating, flexible graphite filling (asbestos-free), curl
and inner ring of 304 Stainless Steel, ASME
B16.20 for flanges ASME B16.5, bore equal to the
inside diameter of the pipe.
Spiro-metallic, with centering ring (outer) of carbon
steel ASTM A36 / A36M: 2012 with anticorrosive
coating, flexible graphite filling (asbestos-free), curl
and inner ring of type 304 Stainless Steel, ASME
B16.20, for ASME B16.47A flanges (MSS-SP44),
bore equal to the inside diameter of the pipe.
Screws
Studs
Nuts
Miscellaneous
Figures eight
(integral)
Figures eight
(blind joint and
spacer separated)
Filter
Threaded ends, ASTM A193 Gr. B7, ASME B1.1
class 2A threads.
ASTM A194 Gr. 2H, ASME B1.1 class 2A threads.
10.1
11.1
20 to 300
(3/4 to 12)
300
RF
ASTM A515 Gr. 70
11.1
350 to 750
(14 to 30)
300
RF
ASTM A515 Gr. 70, ASME B 16.48
3000
Welding
box
12.1
20 to 50
(3/4 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A105, ASME B16.11 ends
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B02T1 Hoja 3 de 5
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Specific Technical Specification
Project:
Tee filters
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 183 de 214
“New Refinery in Dos Bocas, Tabasco”
80 to 600
(3 to 24)
Branch Connections
Schedule Same
as the pipeline
Weldable
ASTM A234 Gr. WPB, S / C, weldable ends
Graph T-B02T1 Branch Connections
Notes:
1.1
1.2
1.3
2.1
2.2
2.3
3.1
3.2
4.1
4.2
4.3
4.5
5.1
5.2
5.3
6.1
6.2
6.3
7.1
7.2
7.3
7.4
8.1
8.2
For the Operating limits conditions of the service and Pressure and Temperature Limits, according to the Range of the Flange
Class (ASME B16.5) see EMT index. However, it may be limited for certain components allowed by this specification. Refer to
pressure and temperature restrictions that limit codes.
The slaughter thickness is included in the wall thickness that is assigned to the pipe, connections and fittings for this specification,
for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
Apply according to the tables: 330.1.1 and 331.1.1 of ASME B31.3 in the components of the Pipe System.
In pipes, DN 20 (NPS 3/4) is the minimum allowed.
a. . External efforts or vacuum conditions may require additional reinforcement or greater thicknesses.
b. . For pipes installed in pipe corridors (raised frames) and furniture the minimum acceptable length is 12 m.
In all seam pipes, this should be straight longitudinal and 100 percent radiographed.
Threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where cap plugs are installed.
a. to. In the Swages, the end of greater diameter is restricted to DN 100 (NPS 4) and the ID must be equal to that of the pipe to be
welded. In the reduced part the thickness or ID must be of equal diameter to that of the pipe of this specification.
b. b. The threaded end Swage for use of pressure taps (pressure transmitters and gauges), the threaded joints must be sealed
with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap for ends of purges and vents.
Seal welded threaded joints.
a. to. Street elbow for use in threaded connections of pump and compressor bodies.
b. b. Solid bar caps are only allowed in openings without the use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate carrier
flanges, seal with solder after installation.
It is forbidden to use pipe connections or “improvised” fittings such as wedges or “fish mouths” and flat caps. All branches must be
built with factory accessories.
On all seam connections indicated in this specification, the weld must be longitudinal straight and 100 percent radiographed.
Eccentric Reduction with flat face up for pump suction (concentric reduction should not be used).
a. . Welding of reinforced connectors with the head must be fully penetrated in accordance with ASME code B31.3.
b. . Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the specification is
the branch.
The fully reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the hydrostatic or
pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed with a threaded joint. Purges and
vents that are required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
For fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlets connectors, weld case welds should be
inspected, according to the percentage indicated in the pipe specification and index of pipe materials.
Welding box flanges must correspond to the pipeline ID.
Weld neck flanges must have the same pipeline to which they are to be joined.
The orifice plate and pipe flanges to be joined must have the same bore and thickness. Before welding, the flange must be aligned
to the tube, and there should be no steps. After welding, the inner weld (mirror finish) must be ground and polished, there should
be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar plugs) must be sealed with solder.
For long neck flanges for thermowell intakes, the inner diameter must be specified to match the outer diameter of the thermowell
and ensure insertion, Class 300 is the minimum allowed.
a. . On DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. . With maximum fugitive emissions of 50 ppm.
c. . The manufacturer must specify on a stainless-steel metal label, attached to the body and with a blow letter on the valve body:
identification number, types of bonnet gasket and stuffing box packing.
d. . All valve hardware must be of the proper specification to the valve body material
e. . Flywheels of all valves must be solid, hollow flywheels are not allowed.
These valves: single expansion gate valve, parallel disc gate (double expansion), sliding (parallel-sided), ball mounted on stump, and wafer
type retention, are only allowed upon express request by Pemex in the Project or by Specification of Technologist or Licensor .
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B02T1 Hoja 4 de 5
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Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
8.3
8.4
8.5
8.6
8.20
8.21
8.24
8.25
8.26
10.1
11.1
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 184 de 214
“New Refinery in Dos Bocas, Tabasco”
DN 50 (NPS 2) gate valves with flanged ends, the flanges and body must be in one piece (not welded), they are only allowed in
equipment nozzles for instrument sockets such as magnetic and optical level indicators, transmitters of level.
Check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of fluids to protect upstream
installations.
a. Ball-type valve mounted on stump (trunion), energized seats, bidirectional seats, soft seal (nylon or PTFE), Internal: carbon steel dial
with electrolytic nickel coating 0.003 in, ASTM A322 Gr. 4140 stem (UNS G41400), AISI 410SS stainless steel seats, soft seal polyamide
(nylon) [120 ° C (248 ° F)] or PTFE 180 ° C (356 ° F). [180 ° C (356 ° F)].
b. Welded body valves should be inspected by 100 percent radiography and / or ultrasound according to ASME Section VIII division 1.
c. Valves from DN 50 to DN 100 (NPS 2 to NPS 4) operated with handle, in DN 150 (NPS 6) and larger with dual speed gear operator.
It is forbidden to use ear valves or bipartite disc type installed between flanges.
Butterfly valves are for insulating large inventory containers. When they are extended bonnet, this must be manufactured in one
piece.
The packing of the stuffing box must be graphite for cryogenic and fire-resistant service.
Silent Check Valves (Non slam) for exclusive use in compressor discharge
Fuel gas regulation systems must have a ¼ turn opening and closing ball-type block valve, which must be located in a place
accessible to at least 15 m.
a. For ball valves with a soft seal, this must be used in accordance with section 8.2.11 of ET-211-PEMEX-2008.
b. For safety valve locks (PSV) they must be ball type and have a mechanism to install a padlock that ensures their open position
c. For LP Gas service ball valves must be used instead of gate valves in storage areas.
The studs are not affected in their central section by the tools with which the threading is made, which allows them to have a
greater resistance to corrosion compared to the stud.
The suction and discharge of pumps inlet and outlet lines of heat exchangers and compressors, in battery limits, direct fire heaters,
filters that use filter elements of cartridges and all that equipment that are required to insulate for frequent maintenance, must have
definitive reversible figures.
a. to. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected.
b. b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. c. When special filters such as cartridge type are used, they must be included in addition to the blocking valves, figures eight to
ensure their total isolation.
d. d. The filters must have at least 1.5 times the passage area of the pipe.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B02T1 Hoja 5 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Rev. 0
Sheet 185 de 214
“New Refinery in Dos Bocas, Tabasco”
Industrial facilities
Pipe Materials Specification
Service: Butane, Ethane, Natural Gas, LP Gas, Fuel Gas,
Sweet Gas, Methane, Propane, Cyclohexane, Non-corrosive
hydrocarbon condensates, Reduced crude, Non-corrosive
hydrocarbons, Methanol, Light gasoline, Heavy gasoline, Water
+ Non-corrosive hydrocarbons , Fuel oil, Heating or thermal oil,
Flushing oil, Recovered oil, Antifoam.
Material: CS
Allowable corrosion:
Heat Treatment and Relief of efforts
1.6 mm (0.0625 in)
See: Note 1.3
See: Note 1.2
Component
ET-032-PEMEX-2019
18/03/2019
Ver
Notes
Pressure and
temperature limits
See: Note 1.1
DN
diameter
(NPS)
Minimum thickness
(in) or Certificate /
Class
20 to 50
(3/4 to 2)
80
Internal
Valves:
Trim 5
Extremes
T-B03T1
RT
20 %
Additional NDT%
see EMT index
See: Note 6.3
Class 300
RF face
Welding’s of welding box in DN 50 (NPS 2)
and smaller; butt welds DN 80 (NPS 3) and
greater
Description
Pipeline
2.1, 2.2
Tube
2.2
2.2, 2.3
Flat
80 to 350
(3 to 14)
400(16)
450 to 500
(18 to 20)
600 (24)
650 (26)
0.625
0.5
750(30)
0.625
STD
ASTM A106 Gr. B, ASME B36.10
40
XS
Beveled
ASTM A 672 Gr. B70 (ASTM Plate A515 Gr. 70),
Class 12, C / C longitudinal straight, EFW, RT 100%,
Ex = 1.0
Nipple
3.1
20 to 50
(3/4 to 2)
Concentric
Swage.
3.2
20 to 50
(3/4 to 2)
Eccentric Swage.
3.2
20 to 50
(3/4 to 2)
Connections
90 ° elbow
45 ° elbow
Tee straight
Reduced tee
cross
Couple
Couple Reduced
4.1
20 to 50
(3/4 to 2)
Cap Plug
4.2
Nipple (online)
Solid bar stopper
4.2
4.5
Street elbow
4.5
Elbow 90 ° long
radius
5.1
5.1
20 to 50
(3/4 to 2)
Schedule Same
as the pipeline
3000
3000
For
welding /
thread +
welding
For
welding /
thread +
welding
ASTM A106 Gr. B, ASME B36.10
ASTM A234 Gr. WPB, MSS SP-95
To weld
ASTM A234 Gr. WPB, MSS SP-95
Welding
box
ASTM A105, ASME B16.11
Threaded
ASTM A105, ASME B16.11, ASME B1.20.1
thread
ASTM A105, ASME B16.11, ASME B1.20.1
thread
ASTM A105, ASME B16.11, threads (female-male
ASME B1.20.1)
80 to 600
(3 to 24)
650 to 750
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Schedule Same as
the pipeline
Beveled
ASTM A234 Gr. WPB, S/C, ASME B16.9
ASTM A234 Gr. WPBW, C/C, ASME B16.9
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B03T1 Hoja 1 de 6
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
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Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
45 ° elbow
Tee straight
Reduced tee
45 ° elbow
Concentric
Reduction
Eccentric
Reduction
Cap Plug
Rev. 0
Sheet 186 de 214
“New Refinery in Dos Bocas, Tabasco”
5.2
(26 to 30)
5.1
80 to 600
(3 to 24)
5.1
5.2
650 to 750
(26 to 30)
5.1
80 to 600
(3 to 24)
5.1
5.2
Tee straight
ET-032-PEMEX-2019
18/03/2019
5.1
650 to 750
(26 to 30)
80 to 600
(3 to 24)
5.1
5.2
650 to 750
(26 to 30)
5.1
80 to 600
(3 to 24)
5.1
5.2
5.1
5.3
5.1,5.2
5.3
5.1
5.2
650 to 750
(26 to 30)
80 to 600
(3 to 24)
650 to 750
(26 to 30)
80 to 750
(3 to 30)
650 to 750
(26 to 30)
ASTM A234 Gr. WPB, S/C, ASME B16.9
Schedule Same as
the pipeline
Beveled
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A234 Gr. WPB, S/C, ASME B16.9
Schedule Same as
the pipeline
Beveled
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A234 Gr. WPB, S/C, ASME B16.9
Schedule Same as
the pipeline
Beveled
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A234 Gr. WPB, S/C, ASME B16.9
Schedule Same as
the pipeline
Beveled
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A234 Gr. WPB, S/C, ASME B16.9
Beveled
Schedule Same as
the pipeline
ASTM A234 Gr. WPBW, C/C, ASME B16.9
ASTM A234 Gr. WPB, S/C, ASME B16.9
Schedule Same as
the pipeline
Beveled
ASTM A234 Gr. WPBW, C/C, ASME B16.9
Integrally reinforced connections
BeveledThreade
d
BeveledWelding
box
BeveledWelding
box
6.1
6.2
20 to 50
(3/4 to 2)
6.1
6.3
20 to 50
(3/4 to 2)
Lateral Outlet
6.1
6.3
20 to 50
(3/4 to 2)
Butt Weld Outlet
6.1
80 to 250
(3 to 10)
Nipple Outlet
6.1
6.3
20 to 50
(3/4 to 2)
3000
7.1
20 to 50
(3/4 to 2)
300
7.2
80 to 600
(3 to 24)
300
7.2
650 to 750
(26 to 30)
300
Threaded Outlet
Socket Weld
Outlet
3000
Schedule Same as
the pipeline
Beveled
Flat
bevel
ASTM A105, MSS SP-97
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
Flanges
Welding box
flanges
Weld neck flanges
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A105 ASME B16.5
RF
ASTM A105 ASME B16.5, ID and bore equal to
that of the pipe.
ASTM A105 ASME B16.47A (MSS-SP-44), ID
and bore equal to that of the pipe.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B03T1 Hoja 2 de 6
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Long neck flange
Rev. 0
Sheet 187 de 214
“New Refinery in Dos Bocas, Tabasco”
20 to 600
(3/4 to 24)
300
ASTM A105 ASME B16.5.
650 to 750
(26 to 30)
300
ASTM A105 ASME B16.47A (MSS-SP44)
7.3
50 to 600
(2 to 24)
300
ASTM A105, ASME B16.36, weldable neck, bore
equal to the pipe.
7.4
25 to 50
(1 to 2)
300
ASTM A105, ASME B16.5.
8.1
20 to 50
(3/4 to 2)
800
Welding
box
8.1
8.3
80 to 600
(3 to 24)
300
RF
Blind flanges
Hole plate carrier
flanges
ET-032-PEMEX-2019
18/03/2019
Valves
Gate
Valves
Single expansion
gate valves
(double disc)
Double expansion
gate valves
Solid-sided sliding
gate valves with
parallel faces
8.1
650 to 750
(26 to 30)
8.2
80 to 600
(3 to 24)
8.2
80 to 750
(3 to 30)
300
RF
8.2
80 to 750
(3 to 30)
300
RF
8.1
20 to 50
(3/4 to 2)
800
Welding
box
8.1
80 to 300
(3 to 12)
300
RF
8.1
8.4
20 to 50
(3/4 to 2)
800
Welding
box
8.1
8.4
8.6
80 to 600
(3 to 24)
300
RF
8.1, 8.4
8.24
100 to 600
(4 to 24)
300
RF
8.1
8.2
8.5
8.6
8.25
80 to 750
(3 to 30)
300
RF
Globe valves
Check
Valves
Silent Check
Valves (Non
slam), axial flow
Ball mounted ball
valves
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
300
300
RF
RF
ASTM A105, ISO 15761, Trim 5, OS&Y, fixed
steering wheel, ascending stem, flanged bonnet,
solid gate.
ASTM A216 Gr. WCB, ISO 10434, Trim 5, OS&Y,
fixed steering wheel, rising stem, flanged bonnet.
Solid or flexible wedge naphtha other services.
ASTM A216 Gr. WCB, ASME B16.34, Trim 5
conforming to ISO 10434, OS&Y, ASME B16.47A
flanges, fixed steering wheel, rising stem, flanged
bonnet, solid or flexible wedge.
ASTM A216 Gr. WCB, ISO 10434, Trim 5, parallel
seats, protruding stem, outer rope and yoke,
bolted bonnet, operated with steering wheel.
ASTM A216 Gr. WCB, full step, design
requirements, materials, gate coatings, seats and
stem, tests, operators and documentation based
on ET-211-PEMEX-2008.
ASTM A216 Gr. WCB, full step, design
requirements, materials, seat insert, hatch covers,
seats and stem, tests, operators and
documentation based on ET-211-PEMEX-2008.
ASTM A105, ISO 15761, Trim 5, OS&Y, flywheel
and rising stem, flange bonnet.
ASTM A216 Gr. WCB, ASME B16.34, Trim 5
conforming to API STD 623, OS&Y, flywheel and
rising stem, flange bonnet.
ASTM A105, ISO 15761, Trim 5, ball or piston
type for working horizontally / vertically, flanged
cover.
ASTM A216 Gr. WCB, API STD 594 type B, Trim
5, flanged cover, swing type and stop integrated
to the body that limits the opening of the disc.
ASTM A216 WCB body and nozzle, ISO 14313,
ASTM A276 Type 410-disc arrow, ASTM A105
disc or plug, ASTM A276 Type 410 spring, AISI
410 seats, ASTM A276 Type 410 anti-rotation
bolt. Axial plug and spring that reduces shock of
ram. Metal-metal seal.
ASTM A105 or ASTM A216 Gr. WCB, designed,
manufactured and tested according to ISO 14313
and requirements of ET-211-PEMEX-2008,
fireproof API SPC 6FA, ISO 10497, full pass,
bolted or welded body, soft seal, with seat
temperature limitations
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B03T1 Hoja 3 de 6
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 188 de 214
“New Refinery in Dos Bocas, Tabasco”
.
Butterfly valve
8.1, 8.6
8.20
8.21
80 to 600
(3 to 24)
300
RF
ASTM A216 Gr. WCB, API 609 category B, triple
eccentricity, solid one-piece seal ring, integral
body seat, metal-metal seal, fireproof ISO 10497.
Design must comply with 8.2.1 and 8.10 of the
ET-204-PEMEX-2012.
Gasket
Gasket
20 to 600
(3/4 to 24)
300
RF
Gasket
650 to 750
(26 to 30)
300
RF
Spiro-metallic, with centering ring (outer) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), curl and inner ring of stainlesssteel type 304, ASME B16.20 for flanges ASME
B16.5, bore equal to the inside diameter of the
pipe.
Spiro-metallic, with carbon steel (outer) centering
ring ASTM A36 / A36M: 2012 with anticorrosive
coating, flexible graphite filling (asbestos-free),
curl and inner ring of A Inox type 304, ASME
B16.20, for ASME B16.47A flanges (MSS-SP44),
bore equal to the inside diameter of the pipe.
Screws
Studs
10.1
Threaded ends, ASTM A193 Gr. B7, ASME B1.1
class 2A threads.
Nuts
ASTM A194 Gr. 2H, ASME B1.1 class 2A
threads.
Miscellaneous
Figures eight
(integral)
Figures eight
(blind joint and
spacer
separated)
11.1
20 to 300
(3/4 to 12)
300
RF
11.1
350 to 750
(14 to 30)
300
RF
3000
Welding
box
ASTM A105, ASME B16.11 ends
Weldable
ASTM A234 Gr. WPB, S / C, weldable ends
Filter
12.1
Tee filters
12.1
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
Branch Connections
Schedule Same as
the pipeline
ASTM A515 Gr. 70
ASTM A515 Gr. 70, ASME B 16.48
Graph T-B03T1 Branch Connections
Notes:
1.1
1.2
1.3
2.1
2.2
2.3
3.1
3.2
For the Operating limits conditions of the service and Pressure and Temperature Limits, according to the Range of the Flange
Class (ASME B16.5) see EMT index. However, it may be limited for certain components allowed by this specification. Refer to
pressure and temperature restrictions that limit codes.
The slaughter thickness is included in the wall thickness that is assigned to the pipe, connections and fittings for this specification,
for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
Apply according to the tables: 330.1.1 and 331.1.1 of ASME B31.3 in the components of the Pipe System.
In pipes, DN 20 (NPS 3/4) is the minimum allowed.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses.
b. For pipes installed in pipe corridors (raised frames) and Cement Stand the minimum acceptable length is 12 m.
In all seam pipes, this should be straight longitudinal and 100 percent radiographed.
Threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where cap plugs are installed.
a. In Concentric and Eccentric Nipples, the larger diameter end is restricted to DN 100 (NPS 4) and the ID must be equal to that of the
pipe to be welded. In the reduced part the thickness or ID must be of equal diameter to that of the pipe of this specifica tion.
b. The threaded end Swage for use of pressure taps (pressure transmitters and pressure gauges), the threaded joints must be sealed with
welding.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B03T1 Hoja 4 de 6
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
4.1
4.2
4.3
4.5
5.1
5.2
5.3
6.1
6.2
6.3
7.1
7.2
7.3
7.4
8.1
8.2
8.3
8.4
8.5
8.6
8.20
8.21
8.24
8.25
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 189 de 214
“New Refinery in Dos Bocas, Tabasco”
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap for ends of purges and vents.
Seal welded threaded joints.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps are only allowed in openings without use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate carrier flanges,
seal with solder after installation.
It is forbidden to use pipe connections or “improvised” fittings such as wedges or “fish mouths” and flat caps. All branches must be
built with factory accessories.
On all seam connections indicated in this specification, the weld must be longitudinal straight and 100 percent radiographed.
Eccentric Reduction with flat face up for pump suction (concentric reduction should not be used).
a. Welding of reinforced connectors with the head must be fully penetrated in accordance with ASME code B31.3.
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the specification is
the branch.
The fully reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the hydrostatic or
pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed with a threaded joint. Purges and
vents that are required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
For fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlets connectors, weld case welds should be
inspected, according to the percentage indicated in the pipe specification and index of pipe materials.
Welding box flanges must correspond to the pipeline ID.
Weld neck flanges must have the same pipeline to which they are to be joined.
The orifice plate and pipe flanges to be joined must have the same bore and thickness. Before welding, the flange must be aligned
to the tube, and there should be no steps. After welding, the inner weld (mirror finish) must be ground and polished, there should
be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar plugs) must be sealed with solder.
For long neck flanges for thermowell intakes, the inner diameter must be specified to match the outer diameter of the thermowell
and ensure insertion, Class 300 is the minimum allowed.
a. On DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal label, attached to the body and with a blow letter on the valve body:
identification number, types of bonnet gasket and stuffing box packing.
d. All valve hardware must be of the proper specification to the valve body material
e. Flywheels of all valves must be solid, hollow flywheels are not allowed.
These valves: single expansion gate valve, parallel disc gate (double expansion), sliding (parallel-sided), ball mounted on stump,
and wafer type retention, are only allowed upon express request by Pemex in the Project or by Specification of the Technologist or
Licensor.
DN 50 (NPS 2) gate valves with flanged ends, the flanges and body must be in one piece (not welded), they are only allowed in
equipment nozzles for instrument sockets such as magnetic and optical level indicators, transmitters of level.
Check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of fluids to protect upstream
installations.
a. Ball-type valve mounted on stump (trunion), energized seats, bidirectional seats, soft seal (nylon or PTFE), Internal: carbon stee l dial
with electrolytic nickel coating 0.003 in, ASTM A322 Gr. 4140 stem (UNS G41400), AISI 410SS stainless steel seats, soft seal polyamide
(nylon) [120 ° C (248 ° F)] or PTFE 180 ° C (356 ° F). [180 ° C (356 ° F)].
b. Welded body valves should be inspected by 100 percent radiography and / or ultrasound according to ASME Section VIII division 1.
c. Valves from DN 50 to DN 100 (NPS 2 to NPS 4) operated with handle, in DN 150 (NPS 6) and larger with dual speed gear operator.
It is forbidden to use ear valves or bipartite disc type installed between flanges.
Butterfly valves are for insulating large inventory containers. When they are extended bonnet, this must be manufactured in one
piece.
The packing of the stuffing box must be graphite for cryogenic and fire-resistant service.
Silent Check Valves (Non slam) for exclusive use in compressor discharge
Fuel gas regulation systems must have a ¼ turn opening and closing ball block valve, which must be located in a place accessible
at least 15 m.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B03T1 Hoja 5 de 6
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
8.26
10.1
11.1
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 190 de 214
“New Refinery in Dos Bocas, Tabasco”
a. For ball valves with a soft seal, this must be used in accordance with section 8.2.11 of ET-211-PEMEX-2008.
b. For safety valve locks (PSV) they must be ball type and have a mechanism to install a padlock that ensures their open position
c. For LP Gas service ball valves must be used instead of gate valves in storage areas.
The studs are not affected in their central section by the tools with which the threading is made, which allows them to have a
greater resistance to corrosion compared to the stud.
The suction and discharge of pumps inlet and outlet lines of heat exchangers and compressors, in battery limits, direct fire heaters,
filters that use filter elements of cartridges and all that equipment that are required to insulate for frequent maintenance, must have
definitive reversible figures.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, they must be included in addition to the blocking valves, figures eight to
ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B03T1 Hoja 6 de 6
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Sheet 191 de 214
Pipe Materials Specification
Service: Medium pressure water
vapor, medium condensate and boiler
feed water
Allowable corrosion:
1.6 mm (0.0625 in)
See Note 1.2
Pipeline
Tube
DN
diameter
(NPS)
20 to 50
(3/4 to 2)
2.2
80 to 350
(3 to 14)
400 to 600
(16 to 24)
650 to 1200
(26 to 48)
T-B04T1
Pressure and temperature limits
3760 kpa @ 350°C
See Note 1.1
Material: CS
Heat and Relief Treatment of Efforts N.A.
Notes
Rev. 0
“New Refinery in Dos Bocas, Tabasco”
Industrial facilities
Component
ET-032-PEMEX-2019
18/03/2019
Minimum thickness
(in) or Certificate /
Class
80
Internal
Valves:
Trim 8
Extremes
Flat
RT
20 %
NDT
20 %
See Note 6.3
Class 300
RF face
Welding’s of welding box in DN 50 (NPS
2) and smaller; butt welds DN 80 (NPS 3)
and greater
Description
ASTM A106 Gr. B
STD
ASTM A53 Gr. B, S/C
Beveled
40
To be calculated
by the Contractor
API 5L GR. B DSAW, straight longitudinal
C / C (Ex=0.95)
Nipple
Nipple
Concentric
Swage.
Eccentric
Swage.
Connections
90 ° elbow
45 ° elbow
Tee straight
Reduced tee
cross
Couple
Couple
Reduced
Cap plug
Solid bar stopper
3.1
20 to 50
(3/4 to 2)
3.2, 6.3
20 to 50
(3/4 to 2)
4.1
20 to 50
(3/4 to 2)
3000
Welding
box
ASTM A105, ASME B16.11
20 to 50
(3/4 to 2)
3000
Threaded
ASTM A105, ASME B16.11, rosca ASME B1.20.1
Beveled
ASTM A234 Gr. WPB, ASME B16.9
Beveled
ASTM A234 Gr. WPB, ASME B16.9
4.2
4.5
Flat / Thread
Flat / Flat
80
Schedule
Same as the
pipeline
Elbow 90 ° long
radius
Elbow 45
Tee straight
Reduced tee
Concentric
Reduction
Eccentric
Reduction
5.1
80 to 600
(3 to 24)
Schedule
Same as the
pipeline
Cap Plug
5.1
80 to 750
(3 to 30)
Schedule Same as
the pipeline
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Thread /
bevel Flat /
bevel
ASTM A106 Gr. B
ASTM A234 Gr. WPB, MSS SP-95
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B04T1 Hoja 1 de 4
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Project:
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18/03/2019
Rev. 0
Sheet 192 de 214
“New Refinery in Dos Bocas, Tabasco”
Elbow 90 ° long
radius
Elbow 45
Tee straight
Reduced tee
Concentric
Reduction
Eccentric
Reduction
5.1
650 to 1200
(26 to 48)
Schedule
Same as the
pipeline
Elliptical lid
5.1
800 to 1200
(32 to 48)
Schedule Same as
the pipeline
Beveled
ASTM A234 Gr. WPB-W, (Ex.=0.95) ASME B16.9
Beveled
ASTM A516 Gr. 70 (2: 1 AXIS RATIO)
ASTM A105, MSS SP-97
Integrally reinforced connections
Threaded Outlet
6.1,6.2
20 to 50
(3/4 to 2)
3000
Threaded
Socket Weld
Outlet
6.1,6.3
20 to 50
(3/4 to 2)
3000
Welding
box
Lateral Outlet
Butt Weld Outlet
Nipple Outlet
6.1
80 to 250
(3 to 10)
6.1,6.3
20 to 50
(3/4 to 2)
Schedule
Same as the
pipeline
Beveled
3000
Flat
300
RF
300
RF
300
RF
300
RF
300
RF
300
RF
300
RF
20 to 50
(3/4 to 2)
800
Welding
box
80 to 600
(3 to 24)
300
Beveled
650 to 1200
(26 to 48)
300
Beveled
20 to 50
(3/4 to 2)
800
Welding
box
80 to 300
(3 to 12)
300
Beveled
20 to 50
(3/4 to 2)
800
Welding
box
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
Flanges
Welding box
flanges
Weld neck
flanges
Weld neck
flanges
7.1
7.6
7.2, 7.6
7.2, 7.6
Blind flanges
Blind flanges
Orifice plate
carrier flanges
Long neck flange
Valves
Gate
Valves
Gate
Valves
Gate
Valves
Globe valves
Globe valves
Check
Valves
7.3
7.4
8.1
8.18
8.1
8.9
8.18
8.1
8.9
8.18
8.1
8.18
8.1
8.9
8.18
8.1
8.4
8.18
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
650 to 1200
(26 to 48)
20 to 600
(3/4 to 24)
650 to 1200
(26 to 48
50 to 600
(2 to 24)
25 to 50
(1 to 2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A105, ASME B16.5, SCHEDULE 80
ASTM A105 ASME B16.5, SCHEDULE and
bore equal to that of the pipe.
ASTM A105 ASME B16.47, SERIES A (MSSSP44)
ASTM A105 ASME B16.5.
ASTM A105 ASME B16.47, SERIES A (MSSSP44)
ASTM A105, ASME B16.36
ASTM A105, ASME B16.5.
ASTM A105, ISO 15761, Trim 8, OS&Y, fixed
steering wheel, ascending stem, welded
bonnet, solid wedge.
ASTM A216 Gr. WCB, ISO 10434, Trim 8,
OS&Y, fixed steering wheel, ascending stem,
Threaded bonnet, flexible wedge.
ASTM A216 Gr. WCB, ISO 10434, Trim 8,
OS&Y, fixed steering wheel, rising stem,
Threaded bonnet, flexible wedge, with gear
operator
ASTM A105, ISO 15761, Trim 8, OS&Y,
flywheel and rising stem, welded bonnet.
ASTM A216 Gr. WCB, ASME B16.34, Trim 8
conforming to API STD 623, OS&Y, flywheel
and rising stem, Threaded bonnet.
ASTM A105, ISO 15761, Trim 8, ball or piston
type for working in horizontal / vertical position,
Threaded cover.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B04T1 Hoja 2 de 4
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Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 193 de 214
“New Refinery in Dos Bocas, Tabasco”
Check
Valves
8.1
8.4, 8.9
8.18
80 to 600
(3 to 24)
300
Beveled
Check
Valves
8.1
8.4, 8.9
8.18
80 to 600
(3 to 24)
300
Beveled
Check
Valves
8.1
8.4, 8.9
8.18
650 to 900
(26 to 36)
300
Beveled
ASTM A216 Gr. WCB, API STD 594 type B,
Trim 8, Threaded cover, swing type and stop
integrated to the body that limits the opening of
the disc.
ASTM A216 Gr. WCB, API STD 594 type B,
Trim 8, Threaded cover, swing type and stop
integrated to the body that limits the opening of
the disc.
ASTM A216 Gr. WCB, API STD 594 type B,
Trim 8, Threaded cover, swing type and stop
integrated to the body that limits the opening of
the disc.
Gasket
Gasket
20 to 600
(3/4 to 24)
300
RF
Gasket
650 to 1200
(26 to 48)
300
RF
Spiro-metallic, with centering ring (outer) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), curl and inner ring of stainlesssteel type 304, ASME B16.20 for flanges ASME
B16.5, bore equal to the inside diameter of the
pipe.
Spiro-metallic, with centering ring (outer) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), curl and inner ring of stainlesssteel type 304, ASME B16.20 for flanges ASME
B16.47A, bore equal to the inside diameter of
the pipe.
Screws
ASTM A193 - Gr. B7, threads ASME B1.1 class
2A.
ASTM A194 Gr. 2H, threads ASME B1.1 class
2B.
Stud
Nuts
Miscellaneous
Figure eight
(integral)
Figure eight (blind
joint and spacer
separated)
Filters
12.1
Filters
12.1
20 to 300
(3/4 to 12)
300
RF
ASTM A515 Gr. 70, ASME B 16.48
350 to 600
(14 to 24)
300
RF
ASTM A515 Gr. 70, ASME B 16.48
20 to 50
(3/4 to 2)
80 to 100
(3 to 4)
BRANCH CHART
3000
Thickness equal to
that of the pipe
Welding
box
Beveled
ASTM A105, ASME B16.11 ends
ASTM A105 or ASTM A216 Gr. WCB
T-B04T1 Branch Table
Notes:
1.1
1.2
2.2
3.1
3.2
4.1
4.2
The pressure and temperature limits of this specification are based on the range of the corresponding flange class, indicated in
ASME B16.5. However, certain components allowed by this specification may be limited, so the pressure and temperature
restrictions recommended by the manufacturer should be consulted.
The slaughter thickness is included in the wall thickness that is assigned to the pipe, connections and fittings for this
specification, for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
b. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses.
c. For pipes installed in pipe corridors (raised frames) and Cement Stand the minimum acceptable length is 12 m.
Las uniones roscadas deben ser NPT (ASME B1.20.1) y se deben sellar con soldadura, excepto donde se instalen tapones roscados.
a. . In the softens, the end of greater diameter is restricted to DN 100 (NPS 4) and the smaller one to DN 50 (NPS 2); the ID must be
equal to that of the pipe to be welded.
b. Threaded end sockets for use of pressure taps (pressure transmitters and pressure gauges), threaded joints must be sealed with
solder.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap for ends of purges and vents.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B04T1 Hoja 3 de 4
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Specific Technical Specification
Project:
4.5
5.1
6.1
6.2
6.3
7.2
7.3
7.4
7.6
8.1
8.4
8.9
8.18
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 194 de 214
“New Refinery in Dos Bocas, Tabasco”
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps are only allowed in openings without use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate carrier flanges,
seal with solder after installation.
It is forbidden to use pipe connections or “improvised” fittings such as wedges or “fish mouths” and flat caps. All the
Branches must be built with factory accessories.
a. Welding of reinforced connectors with the head must be fully penetrated in accordance with ASME code B31.3.
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the specification is
the branch.
The fully reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the hydrostatic or
pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed with a threaded joint. Purges
and vents that are required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
For fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet, Socket Weld Outlets, and smaller connections, weld box welds
should be inspected, according to the percentage indicated in the pipe specification and material index of pipeline.
Weld neck flanges must have the same pipeline to which they are to be joined.
The orifice plate and pipe flanges to be joined must have the same bore and thickness. Before welding, the flange must be
aligned to the tube, and there should be no steps. After welding, the inner weld (mirror finish) must be ground and polished, there
should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar plugs) must be sealed with solder.
For long neck flanges for thermowell intakes, the inner diameter must be specified to match the outer diameter of the thermowell
and ensure insertion, Class 300 is the minimum allowed.
The use of flanges in steam services should be minimized; weldable connections should be used in order to eliminate the
likelihood of leaks.
a. On DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. The manufacturer must specify on a stainless-steel metal label, attached to the body and with a blow letter on the valve body:
identification number, types of bonnet gasket and stuffing box packing.
c. All valve hardware must be of the proper specification to the valve body material
d. Flywheels of all valves must be solid, hollow flywheels are not allowed.
The check valves must be installed horizontally, to ensure the closure of the gate and prevent the return of fluids
The beveled ends should be for joints with thicknesses equal to those of the pipes.
The packing of the stuffing box and the half body and half body of the valves must be special for steam service (graphite)
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, they must be included in addition to the blocking valves, figures eight to
ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B04T1 Hoja 4 de 4
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Specific Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 195 de 214
“New Refinery in Dos Bocas, Tabasco”
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Project:
Sheet 196 de 214
Pipe Materials Specification
Service: Bitter gas (H2S partial
pressure greater than 0.05
Psia). Apply Note 1.3
Notes
T-B05T1
Pressure and temperature limits
See Note 1.1
Material: CS “Calm” Thermal
Treatment and Relief of efforts:
Yes, See Note 1.4
Permissible corrosion:
3.2 mm (0.125 in)
See Note 1.2
Rev. 0
“New Refinery in Dos Bocas, Tabasco”
Industrial
facilities
Component
ET-032-PEMEX-2019
18/03/2019
DN
diameter
(NPS)
Valve internals:
Trim 12
Minimum thickness
(in) or Certificate /
Class
Extremes
RT
33 %
NDT
Additional
See Note
6.2
Class 300
RF face
Butt welds DN 25 (NPS 1) and greater
Description / Material
Pipeline
2.2
Tube
2.2
25 to 50
(1 to 2)
80 to 300
(3 to 12)
350 to 400
(14 y 16)
450 to 500
(18 to 20)
600
(24)
160
Flat
STD
ASTM A106 Gr. B, ASME B36.10.
40
Beveled
XS
30
Nipple
25 to 50
(1 to 2)
Nipple (online)
Concentric
Swage.
Eccentric
Swage.
Connections
Elbow 90 ° long
radius
45 ° elbow
Tee straight
Reduced tee
Concentric
Reduction
Eccentric
Reduction
Cap Plug
Cap Plug
Solid rod cap
3.3
25 to 50
(1 to 2)
5.1
25 to 600
(1 to 24)
4.2
4.3
25 to 50
(1 to 2)
Schedule Same as
the pipeline
ASTM A106 Gr. B, ASME B36.10.
Beveled
ASTM A234 Gr. WPB, MSS SP-95
Schedule Same as
the pipeline
Beveled
ASTM A234 Gr. WPB, ASME B16.9
6000
Threaded
ASTM A105, ASME B16.11, rosca ASME B1.20.1
Schedule Same as
the pipeline
Integrally reinforced connections
Lateral Outlet
6.1
25 to 50
(1 to 2)
6000
Beveled
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4), ISO 15156-2
Butt Weld Outlet
6.1
80 to 350
(3 to 14)
Schedule Same as
the pipeline
Beveled
ASTM A105, MSS SP-97.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
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Project:
Nipple Outlet
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 197 de 214
“New Refinery in Dos Bocas, Tabasco”
6.1
25 to 50
(1 to 2)
6000
Beveled
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4).
7.2
80 to 600
(3 to 24)
300
RF
ASTM A105, ASME B16.5, Schedule and bore
equal to that of the pipe.
25 to 600
(1 to 24)
300
RF
ASTM A105, ASME B16.5.
7.3
50 to 600
(2 to 24)
300
RF
ASTM A105, ASME B16.36, weldable neck,
bore equal to that of the pipe.
7.4
25 to 50
(1 to 2)
300
RF
ASTM A105, ASME B16.5.
Valves
Gate
Valves
8.1
8.9
25 to 50
(1 to 2)
800
Beveled
Gate
Valves
8.1
8.3
80 to 600
(3 to 24)
300
RF
Single
expansion gate
valves (double
disc)
8.2
80 to 600
(3 to 24)
300
RF
Flanges
Weld neck
flanges
Blind flanges
Hole plate
carrier flanges
Long neck flange
Double
expansion gate
valves
8.2
80 to 600
(3 to 24)
300
RF
Solid-sided
sliding gate
valves with
parallel faces
8.2
80 to 600
(3 to 24)
300
RF
Globe valves
8.1
8.9
25 to 50
(1 to 2)
800
Beveled
Globe valves
8.1
300
RF
Check
Valves
8.1
8.4
8.9
25 to 50
(1 to 2)
800
Beveled
Check
Valves
8.1
8.4
80 to 600
(3 to 24)
300
RF
8.1
8.2
8.5
8.10
80 to 600
(3 to 24)
300
RF
Ball mounted
Ball valves
(80 to
300)
3 to 12
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A105, ISO 15761, Trim 12, OS&Y, fixed
steering wheel, rising stem, flanged bonnet, solid
gate.
ASTM A216 Gr. WCB, ISO 10434, Trim 10,
OS&Y, fixed steering wheel, rising stem, flanged
bonnet, solid wedge.
ASTM A216 Gr. WCB, ISO 10434, Trim 10,
parallel seats, protruding rod, outer rope and
yoke, bolted bonnet, operated with steering
wheel.
ASTM A216 Gr. WCB, full step, design
requirements, materials, gate coatings, seats
and stem, tests, operators and documentation
based on ET-211-PEMEX-2008.
ASTM A216 Gr. WCB, full step, design
requirements, materials, seat insert, hatch
covers, seats and stem, tests, operators and
documentation based on ET-211-PEMEX-2008.
ASTM A105, ISO 15761, Trim 12, OS&Y,
flywheel and rising stem, flange bonnet.
ASTM A216 Gr. WCB, ASME B16.34, Trim 10
conforming to API STD 623, OS&Y, flywheel and
rising stem, flange bonnet.
ASTM A105, ISO 15761, Trim 12, ball or piston
type for working horizontally / vertically, flanged
cover.
ASTM A216 Gr. WCB, API 594 type B, Trim 10,
flanged cover, swing type and stop integrated to
the body that limits the opening of the disc.
ASTM A105 or ASTM A216 Gr. WCB, designed,
manufactured and tested according to ISO
14313 and requirements of ET-211-PEMEX2008, fireproof API SPC 6FA, ISO 10497, full
pass, bolted or welded body, soft seal, with
limitations for seat temperature.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B05T1 Hoja 2 de 5
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Project:
Butterfly valve
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 198 de 214
“New Refinery in Dos Bocas, Tabasco”
8.1, 8.6
8.20
8.21
80 to 600
(3 to 24)
300
RF
ASTM A216 Gr. WCB, API 609 category B, triple
eccentricity, solid one-piece seal ring, integral
body seat, metal-metal seal, fireproof ISO
10497. Design must comply with 8.2.1 and 8.10
of the ET-204-PEMEX-2012.
RF
Spiro-metallic, with centering ring (outer) of carbon
steel ASTM A36 / A36M: 2012 with anticorrosive
coating, flexible graphite filling (asbestos-free), curl
and inner ring of 316 Stainless Steel, ASME
B16.20, bore equal to the inside diameter of the
pipe.
Gasket
Gasket
9.1
25 to 600
(1 to 24)
300
Screws
Studs
Threaded ends, ASTM A193 Gr. B7M, ASME B1.1
class 2A threads.
ASTM A194 Gr. 2HM, ASME B1.1 class 2A threads
10.1
Nuts
Miscellaneous
Figures eight
(integral)
Figures eight
(blind joint and
spacer separated)
Tee filters
11.1
25 to 300
(1 to 12)
300
RF
ASTM A515 Gr. 70, ASME B 16.48
11.1
350 to 600
(14 to 24)
300
RF
ASTM A515 Gr. 70, ASME B 16.48
12.1
80 to 600
(3 to 24)
Thickness equal to
that of the pipe
Weldable
Branch Connections
ASTM A234 Gr. WPB, S / C, weldable ends
Graph T-B05T1 Connections for Branches
Notes:
1.1
1.2
1.3
1.4
2.2
3.3
4.2
4.3
5.1
6.1
6.2
7.2
7.3
7.4
For the Operating limits conditions of the service and Pressure and Temperature Limits, according to the Range of the Flange
Class (ASME B16.5) see EMT index. However, it may be limited for certain components allowed by this specification. Refer to
pressure and temperature restrictions recommended by the manufacturer.
The slaughter thickness is included in the wall thickness that is assigned to the pipe, connections and fittings for this
specification, for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
For the design of the Pipe System in Refining and Petrochemical facilities, applies NACE MR0103: 2010. For Pemex Exploration
Production Industrial facilities, the Offshore specifications of this ET-032-Pemex-2014 apply.
Heat Treatment and Relief of efforts apply NACE MR0103: 2010 in all the components of the Pipe System. Also apply tables
330.1.1 and 331.1.1 of ASME B31.3 or equivalent.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress analysis.
b. For pipes installed in pipe corridors (raised frames) and furniture the minimum acceptable length is 12 m.
In the Swages, the end of greater diameter is restricted to NPS 4 and the ID must be equal to that of the pipe to be welded
Cap for ends of purges and vents.
Weld threaded joints
It is forbidden to use pipe connections or “improvised” fittings such as wedges or “fish mouths” and flat caps. All branches must
be built with factory accessories.
a. Welding of reinforced connectors with the head must be fully penetrated in accordance with ASME code B31.3.
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the specification is
the branch.
For fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlets connectors, weld case welds should be
inspected, according to the percentage indicated in the pipe specification and index of pipe materials.
Weld neck flanges must have the same pipeline to which they are to be joined.
The orifice plate and pipe flanges to be joined must have the same bore and thickness. Before welding, the flange must be
aligned to the tube and there should be no steps. After welding, the inner weld (mirror finish) must be ground and polished, there
should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar plugs) must be sealed with solder.
Long neck flanges for thermowell sockets, the inner diameter must be specified to relate it to the outer diameter of the
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B05T1 Hoja 3 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants - Design
and Specifications of Materials
Specific Technical Specification
Project:
8.1
8.2
8.3
8.4
8.5
8.6
8.9
8.10
8.11
8.20
8.21
9.1
10.1
11.1
12.1
12.2
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 199 de 214
“New Refinery in Dos Bocas, Tabasco”
thermowell and ensure insertion, Class 300 is the minimum allowed
a. On DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal label, attached to the body and with a blow letter on the valve body:
identification number, types of bonnet gasket and stuffing box packing.
d. All valve hardware must be of the proper specification to the valve body material
e. Flywheels of all valves must be solid, hollow flywheels are not allowed.
The valves: single expansion gate, parallel disc gate (double expansion), sliding gate (parallel faces), ball mounted on stump,
apply for pipe systems with Pig passage and are only allowed under express request of Pemex in the Project or by specification
of the Technologist or Licensor.
DN 50 (NPS 2) gate valves with flanged ends, the flanges and body must be in one piece (not welded), they are only allowed in
equipment nozzles for instrument sockets such as magnetic and optical level indicators, transmitters of level.
Check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of fluids to protect upstream
installations.
c) Ball valve mounted on stump (trunion), energized seats, bidirectional seats, soft polyamide seal (nylon) or PTFE)], Internal: carbon
steel dial with electrolytic nickel coating 0.003 in, ASTM A322 Gr. 4140 stem (UNS G41400), AISI 410SS stainless steel seats, soft
polyamide seal (nylon) [120 ° C (248 ° F) or PTFE 180 ° C (356 ° F)].
d) Welded body valves should be inspected by radiography and / or 100 percent ultrasound according to ASME Section VIII division 1.
e) Valves of DN 50 A DN 100 (NPS 2 to NPS 4) operated with handle, in DN 150 (NPS 6) and larger with double speed gear operator.
It is forbidden to use ear valves or bipartite disc type installed between flanges.
The beveled ends must be so that they join with thicknesses equal to those of the pipes.
For safety valve locks (PSV) they must be ball type and have a mechanism to install a padlock that ensures their open position.
For ball valves with a soft seal, this must be used in accordance with section 8.2.11 of ET-211-PEMEX-2008.
Butterfly valves are for insulating large inventory containers. When they have an extended bonnet, it must be manufactured in
one piece.
The packing of the stuffing box must be graphite for cryogenic and fire-resistant service.
For use on long neck flanges and hole plate carrier flanges.
The studs are not affected in their central section by the tools with which the threading is made, which allows them to have a
greater resistance to corrosion compared to the stud.
The suction and discharge of pumps inlet and outlet lines of heat exchangers and compressors, in battery limits, direct fire
heaters, filters that use filter elements of cartridges and all that equipment that are required to insulate for frequent maintenance,
must have definitive reversible figures.
a. . The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, additionally they must be included to the blocking valves, figures eight to
ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe.
All welds must be butt
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B05T1 Hoja 4 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants - Design
and Specifications of Materials
Specific Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 200 de 214
“New Refinery in Dos Bocas, Tabasco”
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-B05T1 Hoja 5 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
See
notes
Sheet 201 de 214
Pipe Materials Specification
Service: Noncorrosive
hydrocarbons, Natural Gas,
LP Gas, Fuel Gas, Heavy
Naphtha, and condensates.
(See services index)
Component
Rev. 0
“New Refinery in Dos Bocas, Tabasco”
Industrial facilities
Allowable corrosion:
1.6 mm (0.0625 in)
See Note 1.2
ET-032-PEMEX-2019
18/03/2019
T-D01T1
Pressure and temperature limits
See Note 1.1
Material: CS
Thermal Treatment and Relief of efforts
YES, (See Note 1.3)
Minimum thickness
Diameter
(in) or Schedule /
DN (NPS)
Class
RT
33 %
Internal
Valves:
Trim 5
Extremes
NDT
Additional
See Note
6.3
600 class
RF
Welding’s of welding box in DN 50 (NPS
2) and smaller; butt welds DN 80 (NPS 3)
and greater
Description
Pipeline
2.1, 2.2
Tube
2.2
20 to50
(3/4 to2)
80 to350
(3 to14)
400 (16)
450 (18)
500 (20)
600 (24)
160
Flats
ASTM A106 Gr. B, ASME B36.10
Beveled
ASTM A106 Gr. B, ASME B36.10
80
0.750
0.875
1.0
1.125
Nipple
Nipple (online)
3.1
20 to50
(3/4 to2)
160
Concentric
Swage.
3.2
15 to50
(1/2 to2)
160
Eccentric Swage
3.2
20 to50
(3/4 to2)
160
Connections
90 ° elbow
45 ° elbow
Tee straight
Tee straight
Reduced tee
cross
Couple
Couple Reduced
Cap Plug
4.1
4.1
4.3
4.1
4.2
Solid bar stopper
4.2
4.5
Street elbow
4.5
15 to50
(1/2 to2)
20 to50
(3/4 to2)
15
(1/2)
20 to50
(3/4 to2)
15 to50
(1/2 to2)
15 to50
(1/2 to2)
20 to50
(3/4 to2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
6000
6000
6000
6000
6000
6000
For welding
/ thread +
welding
For welding
/ thread +
welding
To weld
Welding
box
Welding
box
Threaded
ASTM A106 Gr. B, ASME B36.10.
ASTM A234 Gr. WPB, MSS SP-95
ASTM A234 Gr. WPB, MSS SP-95
ASTM A105, ASME B16.11
ASTM A105, ASME B16.11
ASTM A105, ASME B16.11, ASME B1.20.1 thread
Welding
box
ASTM A105, ASME B16.11
Threaded
ASTM A105, ASME B16.11, ASME B1.20.1 thread
Threaded
ASTM A105, ASME B16.11, ASME B1.20.1 thread
Threaded
ASTM A105, ASME B16.11, threads (female male ASME B1.20.1)
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T1 Hoja 1 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Schedule equal to that
of the pipe
20 to50
(3/4 to2)
6000
Lateral Outlet
6.1
6.3
20 to50
(3/4 to2)
6000
Butt Weld Outlet
6.1
Nipple Outlet or
Nipple pipette
Flanges
Welding box
flanges
Weld neck flanges
6.1
6.3
7.2
Blind flanges
Hole plate carrier
flanges
Long neck flange
7.3
7.4
Valves
Gate Valves
Gate Valves
Single expansion
gate valves
(double disc)
Double expansion
gate valves
Solid s sliding
gate valves of
parallel s
80 to250
(3 to10)
20 to50
(3/4 to2)
20 to50
(3/4 to2)
80 to600
(3 to24)
20 to600
(3/4 to24)
50 to600
(2 to24)
25 to50
(1 to2)
Beveled
Beveled Threade
d
Beveled Welding
Box
Beveled Welding
Box
6000
6.1
6.3
7.1
Rev. 0
Sheet 202 de 214
“New Refinery in Dos Bocas, Tabasco”
Elbow 90 ° long
radius
45 ° elbow
Tee straight
Reduced tee
5.1
80 to600
Concentric
5.2
(3 to24)
Reduction
Eccentric
Reduction
Cap Plug
Integrally reinforced connections
6.1
20 to50
Threaded Outlet
6.2
(3/4 to2)
Socket Weld
Outlet
ET-032-PEMEX-2019
18/03/2019
ASTM A105, MSS SP-97
ASTM A105, MSS SP-97
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
Schedule equal to that
of the pipe
Beveled
ASTM A105, MSS SP-97
6000
Beveledflat
ASTM A105, ASME B31.3 (302.2, 304.3, 326,
328.5.4)
600
RF
600
RF
600
RF
600
RF
ASTM A105, ASME B16.36, weldable neck,
bore equal to that of the pipe.
600
RF
ASTM A105, ASME B16.5.
8.1
15 to50
(1/2 to2)
800
Welding
box
8.1
8.3
80 to600
(3 to24)
600
RF
8.2
80 to600
(3 to24)
600
RF
8.2
80 to600
(3 to24)
600
RF
8.2
80 to600
(3 to24)
600
RF
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A234 Gr. WPB, S/C, ASME B16.9
ASTM A105, ASME B16.5 Schedule equal to
that of the pipe.
ASTM A105 ASME B16.5, Schedule and bore
equal to that of the pipe.
ASTM A105 ASME B16.5.
ASTM A105, ISO 15761, Trim 5, OS&Y, fixed
steering wheel, ascending stem, flanged
bonnet, solid gate.
ASTM A216 Gr. WCB, ISO 10434, Trim 5,
OS&Y, fixed steering wheel, rising stem,
flanged bonnet, solid wedge.
ASTM A216 Gr. WCB, ISO 10434, Trim 5, parallel
seats, protruding stem, outer rope and yoke,
bolted bonnet, operated with steering wheel
ASTM A216 Gr. WCB, full step, design
requirements, materials, gate coatings, seats
and stem, tests, operators and documentation
based on ET-211-PEMEX-2008.
ASTM A216 Gr. WCB, full step, design
requirements, materials, seat insert, hatch
covers, seats and stem, tests, operators and
documentation based on ET-211-PEMEX-2008.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T1 Hoja 2 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
8.1
20 to50
(3/4 to2)
800
Welding
box
Globe valves
8.1
80 to300
(3 to12)
600
RF
Check
Valves
8.1
8.4
20 to50
(3/4 to2)
800
Welding
box
Check
Valves
8.1
8.4
8.6
80 to600
(3 to24)
600
RF
8.1
8.4
8.24
100 to600
(4 to24)
600
RF
8.1
8.2
8.5
8.6
8.25
80 to600
(3 to24)
600
RF
8.1
8.6
8.20
8.21
80 to600
(3 to24)
600
RF
Ball mounted ball
valves
Butterfly valve
Rev. 0
Sheet 203 de 214
“New Refinery in Dos Bocas, Tabasco”
Globe valves
Silent Check
Valves (Non
slam), axial flow
ET-032-PEMEX-2019
18/03/2019
ASTM A105, ISO 15761, Trim 5, OS&Y,
flywheel and rising stem, flange bonnet.
ASTM A216 Gr. WCB, ASME B16.34, Trim 5
conforming to API STD 623, OS&Y, flywheel
and rising stem, flange bonnet.
ASTM A105, ISO 15761, Trim 5, ball or piston
type for working horizontally / vertically, flanged
cover.
ASTM A216 Gr. WCB, API 594 type B, Trim 5,
flanged cover, swing type and pe integrated into
the body that limits the opening of the disc.
ASTM A216 WCB body, ISO 14313, ASTM
A276 type 410-disc arrow, ASTM A105 disc or
plug, ASTM A276 type 410 spring, AISI-410
seats, ASTM A276 type 410 anti-rotation bolt.
Axial stopper and axial spring water hammer
Metal-metal seal.
ASTM A105 or ASTM A216 Gr. WCB, must be
designed, manufactured and tested according
to ISO 14313 and the requirements of ET-211PEMEX-2008, fireproof API Spec 6FA, ISO
10497, full step, bolted body or soldier, soft
seal, with seat temperature limitations.
ASTM A216 Gr. WCB, API 609 category B,
triple eccentricity, solid one-piece seal ring,
integral body seat, metal-metal seal, fireproof
ISO 10497. Design must comply with 8.2.1 and
8.10 of ET-204-PEMEX- 2012.
Gasket
20 to600
(3/4 to24)
Gasket
Screws
Studs
Nuts
Miscellaneous
Figure eight
(integral)
Figure eight
(blind joint and
spacer
separated)
Tee filters
600
RF
Spiro-metallic, with centering ring (outer) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), curl and inner ring of 304
Stainless Steel, ASME B16.20 flange holder
ASME B16.5, bore equal to the inside diameter of
the pipe.
ASTM A193 Gr. B7, threads ASME B1.1 class 2A.
ASTM A194 Gr. 2H, ASME B1.1 class 2A threads.
10.1
11.1
20 to300
(3/4 to12)
600
RF
ASTM A515 Gr. 70.
11.1
350 to600
(14 to24)
600
RF
ASTM A515 Gr. 70.
80 to600
(3 to24)
20 to50
(3/4 to2)
Schedule equal to
that of the pipe
Weldable
ASTM A234 Gr. WPB, S / C, weldable ends
12.1
6000
Welding
box
ASTM A105, ASME B16.11 ends
Branch Connections
Graph T-D01T1 Branch Connections
Notes:
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T1 Hoja 3 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
1.1
1.2
1.3
2.1
2.2
3.1
3.2
4.1
4.2
4.3
4.5
5.1
5.2
6.1
6.2
6.3
7.1
7.2
7.3
7.4
8.1
8.2
8.3
8.4
8.5
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 204 de 214
“New Refinery in Dos Bocas, Tabasco”
For the Operating limits conditions of the service and Pressure and Temperature Limits, according to the Range of the Flange
Class (ASME B16.5) see EMT index. However, it may be limited for certain components allowed by this specification. Refer to
pressure and temperature restrictions that limit codes.
The slaughter thickness is included in the wall thickness that is assigned to the pipe, connections and fittings for this
specification, for the purposes of the permissible corrosion that can be tolerated during the life of these parts.
Apply according to the tables: 330.1.1 and 331.1.1 of ASME B31.3 in the components of the Pipe System.
In pipes the DN 20 (NPS 3/4) is the minimum allowed.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses.
b. For pipes installed in pipe corridors (raised frames) and furniture the minimum acceptable length is 12 m.
Threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where cap plugs are installed.
a. In Sockets, the larger diameter end is restricted to DN 100 (NPS 4) and the ID must be equal to that of the pipe to be welded . In the
reduced part the thickness or ID must be of equal diameter to that of the pipe of this specification.
b. Threaded end sockets for use of pressure taps (pressure transmitters and gauges), threaded joints must be sealed with solder.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap for ends of purges and vents.
Weld threaded joints
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps are only allowed in openings without use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate carrier flanges,
seal with solder after installation.
It is forbidden to use pipe connections or “improvised” fittings such as wedges or “fish mouths” and flat caps. All branches must
be built with factory accessories.
On all seam connections indicated in this specification, the weld must be longitudinal straight and 100 percent radiographed.
a. Welding of reinforced connectors with the head must be fully penetrated in accordance with ASME code B31.3.
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the specification is
the branch.
The fully reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the hydrostatic or
pneumatic test. Once the test is completed, they must be closed with a solid bar plug and sealed with a threaded joint. Purges
and vents that are required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
For fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlets connectors, weld case welds should be
inspected, according to the percentage indicated in the pipe specification and index of pipe materials.
Welding box flanges must correspond to the pipeline ID.
Weld neck flanges, must have the same ID of the touch pipe will be joined.
The orifice plate and touch pipe flanges are to be joined, they must have the same bore and thickness. Before welding, the
flange must be aligned to the tube, and there should be no steps. After welding, the inner weld (mirror finish) must be ground and
polished, there should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar plugs) must be sealed with
solder.
For long neck flanges for thermowell intakes, the inner diameter must be specified to match the outer diameter of the thermowell
and ensure insertion, Class 300 is the minimum allowed.
a. On DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal label, attached to the body and with a blow letter on the valve body:
identification number, types of bonnet gasket and stuffing box packing.
d. All valve hardware must be of the proper specification to the valve body material
e. Flywheels of all valves must be solid, hollow flywheels are not allowed.
The valves: single expansion gate, parallel disc gate (double expansion), sliding gate (parallel faces), ball mounted on stump,
apply for pipe systems with Pigs passage and are only allowed under express request of Pemex in the Project or by specification
of the Technologist or Licensor.
DN 50 (NPS 2) gate valves with flanged ends, the flanges and body must be in one piece (not welded), they are only allowed in
equipment nozzles for instrument sockets such as magnetic and optical level indicators, transmitters of level.
Check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of fluids to protect upstream
installations.
a. Ball-type valve mounted on stump (trunion), energized seats, bidirectional seats, soft seal (nylon or PTFE), Internal: carbon steel dial
with electrolytic nickel coating 0.003 in, ASTM A322 Gr. 4140 stem (UNS G41400), AISI 410SS stainless steel seats, soft seal
polyamide (nylon) [120 ° C (248 ° F)] or PTFE 180 ° C (356 ° F). [180 ° C (356 ° F)].
b. Welded body valves must be inspected by 100 percent radiography and / or ultrasound according to ASME Section VIII Division 1
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T1 Hoja 4 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 205 de 214
“New Refinery in Dos Bocas, Tabasco”
c. Valves from DN 50 to DN 100 (NPS 2 to NPS 4) operated with handle, in DN 150 (NPS 6) and larger with dual speed gear operator.
8.6
8.20
8.21
8.24
8.25
8.26
10.1
11.1
12.1
The use of ear valves or two-part disc type installed between flanges is prohibited.
Butterfly valves are for insulating large inventory containers. When they are extended bonnet, this must be made in one piece ..
The packing of the stuffing box must be graphite for cryogenic and fire-resistant service.
Silent Check Valves (Non slam) for exclusive use in compressor discharge
Fuel gas regulation systems must have a ¼ turn opening and closing ball-type block valve, which must be located in a place
accessible to at least 15 m..
a. For ball valves with a soft seal, this must be used in accordance with section 8.2.11 of ET-211-PEMEX-2008.
b. For safety valve locks (PSV) they must be ball type and have a mechanism to install a padlock that ensures their open
position
c. For LP Gas service ball valves must be used instead of gate valves in storage areas
The studs are not affected in their central section by the tools with which the threading is made, which allows them to have a greater
resistance to corrosion compared to the stud.
The suction and discharge of pumps inlet and outlet lines of heat exchangers and compressors, in battery limits, direct fire heaters, filters
that use filter elements of cartridges and all that equipment that are required to insulate for frequent maintenance, must ha ve definitive
reversible figures.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, they must be included in addition to the blocking valves, figures eight to
ensure their total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe..
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T1 Hoja 5 de 5
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Rev. 0
Sheet 206 de 214
“New Refinery in Dos Bocas, Tabasco”
Industrial facilities
Pipe Materials Specification
Service: Hydrocarbons.
Allowable corrosion: 1.6 mm
(0.0625 in) See Note 1.2
Component
ET-032-PEMEX-2019
18/03/2019
See
notes
T-D01T2
Pressure and temperature limits
See Note 1.1
Material: 1¼Cr-½Mo
Relieved of efforts:
YES
See notes 1.3 and 1.10
Diameter
Minimum thickness
DN (NPS)
(in) or Schedule /
Class
RT
100 %
Internal
Valves:
Trim 5
Extremes
NDT
Additional
See Note 6.3
100%
600 class
RF
Welding’s of welding box in DN 50 (NPS
2) and smaller; butt welds DN 80 (NPS 3)
and greater
Description / Material
Pipeline
2.1, 2.2
Tube
2.2
20 to50
(3/4 to2)
80 to200
(3 to8)
250 (10)
300 (12)
350 (14)
400 (16)
450 (18)
500 (20)
600 (24)
160
Flats
ASTM A335 Gr. P11, ASME B36.10
Beveled
ASTM A335 Gr. P11, ASME B36.10
For
welding /
thread +
welding
ASTM A335 Gr. P11
XS
0.562
0.625
0.688
0.750
0.875
0.938
1.125
Nipple
Nipple (in line)
Concentric
Swage
Eccentric
Swage.
Connections
90 ° elbow
45 ° elbow
Tee straight
Reduced tee
cross
Couple
Couple
Reduced
Cap Plug
Solid bar
stopper
Street elbow
3.1
20 to50
(3/4 to2)
160
3.2
25 to50
(1 to2)
Schedule equal to
that of the pipe
To weld
ASTM A234 Gr. WP11 class 2, MSS SP-95
4.1, 4.7
20 to50
(3/4 to2)
6000
Welding
box
ASTM A182 Gr. F11 class 2, ASME B16.11
4.2
20 to50
(3/4 to2)
6000
Threaded
4.2
4.5
15 to50
(1/2 to2)
4.5
20 to50
(3/4 to2)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Threaded
6000
Threaded
ASTM A182 Gr. F11 class 2, ASME B16.11, ASME
B1.20.1 thread
ASTM A182 Gr. F11 class 2, ASME B16.11, ASME
B1.20.1 thread
ASTM A182 Gr. F11 class 2, threads (malefemale ASME B1.20.1)
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T2 Hoja 1 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Elbow 90 ° longa
radius
45 ° elbow
Tee straight
Reduced tee
Eccentric
Concentric
Reduction
Cap Plug
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 207 de 214
“New Refinery in Dos Bocas, Tabasco”
5.1
80 to 600
(3 to 24)
Schedule Same as
the pipeline
Beveled
ASTM A234 Gr. WP11 class 2, S/C, ASME B16.9
Integrally reinforced connections
Threaded Outlet
Socket Weld
Outlet
Lateral Outlet
Butt Weld Outlet
Nipple Outlet
Flanges
Welding box
flanges
Weld neck
flanges
6.1
6.2, 4.7
50 (2)
6000
6.1
6.3, 4.7
20 to 50
(3/4 to 2)
6000
6.1
6.3, 4.7
50 (2)
6000
6.1, 4.7
80 to 200
(3 to 8)
250
(10)
6.1, 4.7
50 (2)
7.1, 4.7
7.2, 4.7
Blind flanges
4.7
Hole plate
carrier flanges
7.3, 4.7
20 to 50
(3/4 to 2)
80 to 600
(3 to 24)
80 to 600
(3 to 24)
80 to 600
(3 to 24)
BeveledThreade
d
BeveledWelding
box
BeveledWelding
box
Schedule Same as
the pipeline
Beveled
ASTM A182 Gr. F11 clase 2, ASME B31.3 (302.2,
304.3, 326, 328.5.4)
600
RF
ASTM A182 Gr. F11 class 2, ASME B16.5,
Schedule equal to the pipe
600
RF
600
RF
600
RF
RF
Gate
Valves
8.1
4.7
15 to 50
(1/2 to 2)
800
Welding
box
Gate
Valves
8.1
8.3
8.27
80 to 600
(3 to 24)
600
RF
Globe valves
8.1
4.7
20 to 50
(3/4 to 2)
800
Welding
box
Globe valves
8.1
8.27
50 to 300
(2 to 12)
600
Beveled
20 to 50
(3/4 to 2)
800
Welding
box
80 to 600
(3 to 24)
600
RF
Check
Valves
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
ASTM A182 Gr. F11 Class 2, MSS SP-97
Flat
bevel
600
8.1
8.4
4.7
8.1
8.4
ASTM A182 Gr. F11 Class 2, ASME B31.3
(302.2, 304.3, 326, 328.5.4)
6000
50
(2)
Check
Valves
ASTM A182 Gr. F11 Class 2, MSS SP-97
XS
7.4, 4.7
Long neck
flange
Valves
ASTM A182 Gr. F11 Class 2, MSS SP-97
ASTM A182 Gr. F11 class 2, ASME B16.5,
Schedule and bore equal to that of the pipe.
ASTM A182 Gr. F11 class 2, ASME B16.5.
ASTM A182 Gr. F11 class 2, ASME B16.36 weld
neck, bore equal to the inside diameter of the
pipe.
ASTM A182 Gr. F11 class 2, ASME B16.5.
ASTM A182 Gr. F11 class 2, ISO 15761, Trim 5,
OS&Y, fixed steering wheel, rising stem, flanged
bonnet, solid gate.
ASTM A217 Gr. WC6, ISO 10434, Trim 5,
OS&Y, fixed steering wheel, rising stem, flanged
bonnet, solid or flexible wedge.
ASTM A182 Gr. F11, ASME B16.34, Trim 5
conforming to ISO 10434, OS&Y, flywheel and
rising stem, flange bonnet.
ASTM A217 Gr. WC6, ASME B16.34, Trim 5
conforming to API STD 623, OS&Y, Pressure
Seal, flywheel and riser, seats with airtight seal.
ASTM A182 Gr. F11 class 2, ISO 15761, Trim 5,
ball or piston type to work horizontally /
vertically, flanged cover.
ASTM A217 Gr. WC6, API STD 594 type B, Trim
5, flanged cover, swing type and stop integrated
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T2 Hoja 2 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
8.1
8.6
8.20
8.21
Rev. 0
Sheet 208 de 214
“New Refinery in Dos Bocas, Tabasco”
8.27
Butterfly valve
ET-032-PEMEX-2019
18/03/2019
80 to 600
(3 to 24)
600
RF
to the body that limits the opening of the disc.
ASTM A217 Gr. WC6, API STD 609 category B, triple
eccentricity, solid one-piece seal ring, integral body
seat, metal-metal seal, fireproof ISO 10497. Design
must comply with 8.2.1 and 8.10 of the ET-204PEMEX-2012.
Gasket
Gasket
20 to 600
(3/4 to 24)
600
RF
Spiro-metallic, with carbon steel (outer) centering ring
ASTM A36 / A36M: 2012 with anticorrosive coating,
Thermiculite filler or equivalent [up to 475 ° C (887 ° F)],
winding tape and inner ring of ASTM A240 Type 316,
ASME B16.20 for ASME B16.5 flanges, bore equal to
the inside diameter of the pipe.
Screws
Threaded ends, ASTM A193 Gr. B16, ASME B1.1
class 2A threads.
ASTM A194 Gr. 4, thread ASME B1.1 class 2A.
Studs
Nuts
Miscellaneous
Figure eight
11.1
(integral)
Figure eight
(blind joint and
11.1
spacer
separated)
Branch Connections
80 to 300
(3 to 12)
350 to 600
(14 to 24)
600
RF
ASTM A387 Gr. 11 class 2, ASME B16.48
600
RF
ASTM A387 Gr. 11 class 2, ASME B16.48
Graph T-D01T2 Branch Connections
Notes:
1.1
1.2
1.3
1.10
2.1
2.2
3.1
3.2
4.1
4.2
4.5
4.7
5.1
6.1
6.2
For the Operating limits conditions of the service and Pressure and Temperature Limits, according to the Range of the Flange
Class (ASME B16.5) see EMT index. However, it may be limited for certain components allowed by this specification. Refer to
pressure and temperature restrictions that limit codes.
The slaughter thickness for permissible corrosion effects, which can be tolerated during the life of these parts, is included in the
wall thickness assigned by this specification to the pipe, fittings and fittings.
Apply according to the requirements of the tables: 330.1.1 and 331.1.1 of ASME B31.3 in the components of the Pipe System.
Relieve all welding efforts
At least DN 20 (NPS ¾) is allowed in pipes
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses, under stress analysis.
b. For pipes installed in pipe corridors (raised frames) and furniture the minimum acceptable length is 12 m.
Threaded joints must be NPT (ASME B1.20.1) and must be sealed with welding, except where cap plugs are installed.
a. to. In Swages, the larger diameter end is restricted to DN 100 (NPS 4) and the Schedule must be equal to that of the pipe to be
welded. In the reduced part, the thickness or Schedule must be equal to the diameter of the pipe of this specification.
b. b. Threaded end Swages for use of pressure taps (pressure transmitters and pressure gauges) and threaded joints must be sealed
with solder.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap for ends of purges and vents.
a. to. Street elbow for use in threaded connections of pump and compressor bodies.
b. b. Solid bar caps allowed in unused openings of DN 20 to DN 50 (NPS ¾ to 2) are allowed, as in orifice plate carrier flanges,
seal with solder after installation
Normalized and tempered.
The use of pipe connections or "improvised" fittings such as wedge plugs or "fish mouth" and flat caps is prohibited. All branches must
be built with factory accessories.
a. Welding of reinforced connectors with the head must be fully penetrated according to ASME code B31.3.
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the specification is
the branch.
The use of the fully reinforced Threaded Outlet connector is limited for purges and vents that must be removed after the hydrostatic test
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T2 Hoja 3 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
6.3
7.1
7.2
7.3
7.4
8.1
8.3
8.4
8.5
8.6
8.20
8.21
8.27
11.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 209 de 214
“New Refinery in Dos Bocas, Tabasco”
or pneumatic Once the test is completed, they must be closed with a solid bar plug and sealed with a threaded joint. Purges and vents
that are required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
For fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlets connectors, weld case welds should be
inspected, according to the percentage indicated in the pipe specification and index of pipe materials.
Welding box flanges must correspond to the Schedule of the pipe.
Weld neck flanges must have the same Schedule of the pipe to be joined.
The orifice plate and pipe flanges to be joined must have the same bore and thickness. Before welding, the flange must be aligned to the
tube and there should be no steps. After welding, the inner weld (mirror finish) must be ground and polished, there should be no
restrictions, bumps or sinking. All threaded joints (nipples and solid bar plugs) must be sealed with solder
For long neck flanges for thermowell intakes, the inner diameter must be specified to match the outer diameter of the thermowell and
ensure insertion, Class 300 is the minimum allowed.
a. On DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a stainless-steel metal label, attached to the body and with a blow letter on the valve body:
identification number, types of bonnet gasket and stuffing box packing.
d. All valve hardware must be of the proper specification to the valve body material.
e. Flywheels of all valves must be solid, hollow flywheels are not allowed
DN 50 (NPS 2) gate valves with flanged ends, flanges and body must be in one piece (not welded), only allowed in equipment no zzles
for instrument sockets such as magnetic and optical level indicators, transmitters of level.
Use a reduced pitch ball valve, only when the pressure drop does not affect the process.
For ball valves with a soft seal, Annex 12.1.3 must be used and for ball valves with a metallic seal, Annex 12.1.4 of ET-211-PEMEX2008, respectively, must be used.
It is forbidden to use ear valves or bipartite disc type installed between flanges.
Butterfly valves are for insulating large inventory containers. When they have an extended bonnet, it must be manufactured in one piece.
The packing of the stuffing box must be graphite for cryogenic and fire-resistant service.
Standardized material
The suction and discharge of pumps, inlet and outlet lines of heat exchangers and compressors, in battery limits, direct fire heaters,
filters that use filter elements of cartridges and all that equipment that are required to insulate by frequent maintenance, must count with
definitive reversible figures.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T2 Hoja 4 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Rev. 0
Sheet 210 de 214
“New Refinery in Dos Bocas, Tabasco”
Industrial facilities
Pipe Materials Specification
Service: Noncorrosive
hydrocarbons, Methane,
Ethane, Propane,
Methanol, Butane.
Apply Note 1.1
Corrosión permisible:
0 mm (0 in)
Ver Nota 1.3
Component
ET-032-PEMEX-2019
18/03/2019
T-D01T3
Límites de presión y temperatura
Ver Nota 1.2
Material: Acero inoxidable Tipo
T304
Relevado de esfuerzos: N.A.
Notes
DN diameter
(NPS)
2.1
2.2
20 to 40
(3/4 to 1
1/2)
50 to 100
(2 to 4)
150 to
200
(6 to 8)
250 to 600
(10 to 24)
Minimum thickness
(in) or Certificate /
Class
RT
33 %
Internos de
válvulas
Trim 12
Extremes
NDT
adicionales
Ver Nota 6.3
Clase 600
Cara RF
Soldaduras de caja para soldar en DN 50 (NPS 2)
y menores; soldaduras a tope DN 80 (NPS 3) y
mayores
Description / Material
Pipeline
Tube
2.2
80S
Flat
40S
ASTM A312 Gr. TP304, S/C, ASME B36.19M
80S
Beveled
To Calculate by
Contractor
Nipple
Nipple (online)
Concentric
Swage.
Eccentric
Swage.
Connections
90 ° elbow
45 ° elbow
Tee straight
Reduced tee
cross
Couple
Couple Reduced
3.1
20 to 40
(3/4 to 1
1/2)
3.2
20 to 50
(3/4 to 2)
4.1
Solid bar stopper
4.2
4.3
4.2
4.5
Street elbow
4.5
Cap Plug
20 to 40
(3/4 to 1
1/2)
20 to 40
(3/4 to 1
1/2)
Elbow 90 °
long radius
45 ° elbow
long radius
Tee straight
5.1
50 to 600
Reduced you
5.3
(2 to 24)
Concentric
Reduction
Eccentric
Reduction Cap
layer
Integrally reinforced connections
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
80S
Schedule Same as
the pipeline
For welding /
thread +
welding
For welding /
thread +
welding
Welding box
3000
3000
Threaded
ASTM A312 Gr. TP304, S/C, ASME B36.19M
ASTM A403 Gr. WP304, MSS SP-95
ASTM A182 Gr. F304, ASME B16.11
ASTM A182 Gr. F304, ASME B16.11, ASME
B1.20.1 thread
ASTM A182 Gr. F304, ASME B16.11, threads
(female-male ASME B1.20.1)
Schedule Same as
the pipeline
Beveled
ASTM A403 Gr. WP304, S/C, ASME B16.9
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T3 Hoja 1 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
Threaded Outlet
20 to 40
(3/4 to 2)
3000
6.1
6.3
20 to 40
(3/4 to 2)
3000
Lateral Outlet
6.1
6.3
20 to 40
(3/4 to 2)
3000
Butt Weld Outlet
6.1
Nipple Outlet or
Nipple pipette
Flanges
Welding box
flanges
6.1
6.3
Weld neck
flanges
7.1
7.2
Blind flanges
Hole plate
carrier flanges
Long neck
flange
Valves
7.3
7.4
80 to 250
(3 to 10)
20 to 40
(3/4 to 2)
20 to 40
(3/4 to 1
1/2)
80 to 600
(3 to 24)
20 to 600
(3/4 to 24)
50 to 600
(2 to 24)
25 to 50
(1 to 2)
Schedule Same as
the pipeline
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
ASTM A182 Gr. F304, MSS SP-97
RF
ASTM A182 Gr. F304, ASME B16.5 Schedule Same
as the pipeline.
600
RF
ASTM A182 Gr. F304, ASME B16.55 Schedule
Same as the pipeline
600
RF
ASTM A182 Gr. F304, ASME B16.5.
600
RF
ASTM A182 Gr. F304, ASME B16.36, neck
weldable, bore equal to the pipe.
600
RF
ASTM A182 Gr. F304, ASME B16.5.
Gate
Valves
8.1, 8.3
8.13
8.19
80 to 600
(3 to 24)
600
8.1
8.13
8.21
8.1
8.13
8.21
20 to 50
(3/4 to 2)
800
80 to 300
(3 to 12)
600
Check
Valves
8.1
8.4
20 to 50
(3/4 to 2)
800
Check
Valves
8.1
8.4
80 to 600
(3 to 24)
600
80 to 600
(3 to 24)
ASTM A182 Gr. F304, MSS SP-97
600
800
8.1, 8.6
8.20
8.21
Beveled
ASTM A182 Gr. F304, MSS SP-97
ASTM A182 Gr. F304, ASME B31.3 (302.2, 304.3,
326, 328.5.4)
20 to 50
(3/4 to 2)
Butterfly valve
BeveledThreade
d
BeveledWelding
box
BeveledWelding
box
Flat
bevel
8.1
8.13
8.19
Globe valves
Sheet 211 de 214
6000
Gate
Valves
Globe valves
Rev. 0
“New Refinery in Dos Bocas, Tabasco”
6.1
6.2
Socket Weld
Outlet
ET-032-PEMEX-2019
18/03/2019
600
ASTM A182 Gr. F304, ISO 15761, Trim 12,
OS&Y, fixed steering wheel, rising stem, flanged
bonnet, solid gate with pressure equalizer hole.
ASTM A351 Gr. CF8, ISO 10434, Trim 12,
OS&Y, fixed steering wheel, rising stem, flanged
RF
bonnet, with pressure equalizing hole, wedge to
be specified by PEMEX in the project.
ASTM A182 Gr. F304, ISO 15761, Trim 12,
Welding box
OS&Y, flywheel and rising stem, flange bonnet.
Welding box
ASTM A351 Gr. CF8, ASME B16.34, Trim 12
conforming to API STD 623, OS&Y, flywheel and
rising stem, flange bonnet.
ASTM A182 Gr. F304, ISO 15761, Trim 12, ball
Welding box or piston type to work horizontally / vertically,
flanged cover.
RF
RF
RF
ASTM A351 Gr. CF8, API 594 type B, Trim 12,
flanged cover, swing type and stop integrated to
the body that limits the opening of the disc.
ASTM A351 Gr. CF8, API 609 category B, triple
eccentricity, solid one-piece seal ring, integral
body seat, metal-metal seal, fireproof ISO 10497.
Design must comply with 8.2.1 and 8.10 of ET204-PEMEX- 2012.
Gasket
Gasket
20 to 600
(3/4 to 24)
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
600
RF
Spiro-metallic, with centering ring (outer) of
carbon steel ASTM A36 / A36M: 2012 with
anticorrosive coating, flexible graphite filling
(asbestos-free), curl and inner ring of type 304
Stainless Steel, ASME B16.20 for flanges ASME
B16.5
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T3 Hoja 2 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 212 de 214
“New Refinery in Dos Bocas, Tabasco”
Screws
ASTM A193 Gr. B8 Class 2, ASME B1.1 class
2A threads
ASTM A194 Gr. 8, ASME B1.1 class 2A
threads
Studs
Nuts
Miscellaneous
Figures eight
(integral)
Figures eight
(blind joint and
spacer
separated)
Tee filters
11.1
12.1
20 to 300
(3/4 to 12)
600
RF
350 to 600
(14 to 24)
600
RF
ASTM A240 type 304, ASME B 16.48
ASTM A240 type 304, ASME B 16.48
80 to 600
(3 to 24)
20 to 40
(3/4 to 1
1/2)
Branch Connections
Schedule Same as
the pipeline
3000
Weldable
ASTM A351 Gr. CF8, S / C, weldable ends.
Welding box ASTM A182 Gr. F304, ASME B16.11 ends
Graph T-D01T3 Branch Connections
Notes:
1.1
1.2
1.3
2.1
2.2
3.1
3.2
4.1
4.2
4.3
4.5
5.1
5.3
6.1
6.2
6.3
For these services, this Specification of Materials for Pipeline, applies only under the express request of Pemex in the Project or by
specification of the Technologist or Licensor
For the Service operating conditions limits and Pressure and Temperature Limits, according to the Range of the Flange Class ( ASME
B16.5) see EMT index. However, it may be limited for certain components allowed by this specification. Refer to pressure and
temperature restrictions recommended by the manufacturer.
In the wall thickness that is assigned to the pipe, connections and fittings by this specification, the slaughter thickness is included, for the
purposes of the permissible corrosion that can be tolerated during the life of these parts.
In pipes the DN 20 (NPS 3/4) is allowed at least.
a. External efforts or vacuum conditions may require additional reinforcement or greater thicknesses.
b. For pipes installed in pipe corridors (raised frames) and Cement Stand the minimum acceptable length is 12 m.
Las uniones roscadas deben ser NPT (ASME B1.20.1) y se deben sellar con soldadura, excepto donde se instalen tapones cachucha.
a. In Swages, the larger diameter end is restricted to DN 100 (NPS 4) and the Schedule must be equal to that of the pipe to be
welded. In the reduced part the thickness or Schedule must be of equal diameter to that of the pipe of this specification.
b. The threaded end Swage for use of pressure taps (pressure transmitters and gauges), the threaded joints must be sealed
with welding.
The use of threaded connections such as: union nuts, bushing reductions and hollow plugs is prohibited.
Cap for ends of purges and vents.
Seal welded threaded joints.
a. Street elbow for use in threaded connections of pump and compressor bodies.
b. Solid bar caps are only allowed in openings without use of: DN 20 to DN 50 (NPS ¾ to 2), as in orifice plate carrier flanges,
seal with solder after installation.
It is forbidden to use improvised pipe connections or fittings such as wedges or “fish mouths” and flat caps. All branches must be built
with factory accessories.
Eccentric Reduction with flat face up for pump suction (concentric reduction should not be used).
a. Welding of the connectors reinforced with the head must be fully penetrated in accordance with ASME code B31.3.
b. Specify head diameter and branch diameter in integrally reinforced connectors. The diameter indicated in the specification is
the branch.
The fully reinforced Threaded Outlet connector limits its use for purges and vents that must be removed after the hydrostatic or
pneumatic test. Once the test is finished, they must be sealed with a solid bar plug and sealed with a threaded joint. Purg es and vents
that are required during startup, operation or maintenance must be Nipple Outlet or Nipple pipette.
In the fully reinforced Nipple Outlet, Nipple pipette, Lateral Outlet and Socket Weld Outlets connectors, weld case welds must be
inspected according to the percentage indicated in this pipe specification.
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-D01T3 Hoja 3 de 4
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
7.1
7.2
7.3
7.4
8.1
8.3
8.4
8.6
8.13
8.19
8.20
8.21
11.1
12.1
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 213 de 214
“New Refinery in Dos Bocas, Tabasco”
Welding box flanges must correspond to the Schedule of the pipe.
Weld neck flanges must have the same Schedule of the pipe to which they will be attached.
The orifice plate and pipe carrier flanges to which they are to be attached must be of the same bore and thickness. Before welding, the
flange must be aligned to the tube and there should be no steps. After welding you must grind and polish the inner weld (mirr or finish),
there should be no restrictions, bumps or sinking. All threaded joints (nipples and solid bar plugs) must be sealed with solder
Long neck flanges for thermowell intakes, the inner diameter must be specified to relate it to the outer diameter of the ther mowell and
ensure insertion, the minimum allowed Class is 300.
a. On DN 600 (NPS 24) and smaller valves, the flanges must comply with the dimensions of ASME B16.5.
b. With maximum fugitive emissions of 50 ppm.
c. The manufacturer must specify on a metal label attached to the body and with a blow letter on the body of the valve:
identification number, types of packing in bonnet and in packing glands.
d. All valve hardware must be of the appropriate specification and compatible with the material of the valve body.
e. Flywheels of all valves must be solid, hollow flywheels are not allowed
DN 50 Gate Valves (NPS 2) with flanged ends, flanges and body must be in one piece (not welded), only allowed in equipment no zzles
for instrument sockets such as magnetic and optical level indicators, level transmitters
Check valves must be installed horizontally, to ensure the closure of the gate and prevent backflow of fluids to protect upstream
installations.
It is forbidden to use ear valves or bipartite disc type installed between flanges.
The valves must be installed with the rod in a horizontal position, so that in case of falling of the cookie does not disable the safety valve
or the vent head.
In the gate they must be supplied with a pressure equalizing hole 3 mm (1/8 in.) In diameter from the fluid containment side and indicated
on the valve body with an arrow indicating the side of greatest pressure. The packing of the stuffing box must be graphite for cryogenic
and fire-resistant service.
Butterfly valves are for insulating large inventory containers. When they have an extended bonnet, it must be manufactured in one piece.
The packing of the stuffing box must be graphite for cryogenic and fire-resistant service
The suction and discharge of pumps in lines of entry and exit of heat exchangers and compressors, in battery limits, direct f ire heaters,
filters that use filter elements of cartridges and all that equipment that need to be isolated by frequent maintenance, must count with
definitive reversible figures.
a. The filter element must be selected to retain particles in accordance with what is recommended for the equipment to be
protected.
b. All filters must have blocking valves that allow their isolation for cleaning purposes.
c. When special filters such as cartridge type are used, figures eight must also be included in the blocking valves to ensure their
total isolation.
d. The filters must have at least 1.5 times the passage area of the pipe
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-F02T2 Hoja 3 de 3
ENGINEERING AND COSTS MANAGEMENT - INDUSTRIAL PROJECTS SUB-DIRECTION
Technical specification
Pipe systems in industrial plants Design and Specifications of Materials
Specific Technical Specification
Project:
ET-032-PEMEX-2019
18/03/2019
Rev. 0
Sheet 214 de 214
“New Refinery in Dos Bocas, Tabasco”
Petróleos Mexicanos Todos los derechos reservados
Pemex Transformación Industrial - Subdirección de Proyectos Industriales
Avenida Marina Nacional #329, Torre Ejecutiva Piso 7
Col. Verónica Anzures, Del. Miguel Hidalgo, C.P. 11300, Ciudad de México.
Prohibida su reproducción parcial o total sin la autorización por escrito de Petróleos Mexicanos a través de las áreas
correspondientes
T-F02T2 Hoja 3 de 3
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