Offshore Commissioning: DNV-RP-A205 Testing & Classification

RECOMMENDED PRACTICE
DNV-RP-A205
Offshore Classification Projects Testing and Commissioning
OCTOBER 2013
The electronic pdf version of this document found through http://www.dnv.com is the officially binding version
DET NORSKE VERITAS AS
FOREWORD
DNV is a global provider of knowledge for managing risk. Today, safe and responsible business conduct is both a license
to operate and a competitive advantage. Our core competence is to identify, assess, and advise on risk management. From
our leading position in certification, classification, verification, and training, we develop and apply standards and best
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and the environment.
DNV service documents consist of among others the following types of documents:
— Service Specifications. Procedural requirements.
— Standards. Technical requirements.
— Recommended Practices. Guidance.
The Standards and Recommended Practices are offered within the following areas:
A) Qualification, Quality and Safety Methodology
B) Materials Technology
C) Structures
D) Systems
E) Special Facilities
F) Pipelines and Risers
G) Asset Operation
H) Marine Operations
J) Cleaner Energy
O) Subsea Systems
U) Unconventional Oil & Gas
© Det Norske Veritas AS October 2013
Any comments may be sent by e-mail to [email protected]
This service document has been prepared based on available knowledge, technology and/or information at the time of issuance of this document, and is believed to reflect the best of
contemporary technology. The use of this document by others than DNV is at the user's sole risk. DNV does not accept any liability or responsibility for loss or damages resulting from
any use of this document.
Recommended Practice DNV-RP-A205, October 2013
CHANGES – CURRENT – Page 3
CHANGES – CURRENT
General
This document supersedes DNV-RP-A205, March 2012.
Text affected by the main changes in this edition is highlighted in red colour. However, if the changes involve
a whole chapter, section or sub-section, normally only the title will be in red colour.
Main changes October 2013
•
—
—
—
General
Spelling, grammar and punctuation have been amended.
The use of abbreviations has been standardized and [1.8] Abbreviations has been expanded.
References to renumbered documents have been updated.
• Sec.6 Safety, Health and Environment
— A new Sec.6 on SHE has been added.
•
—
—
—
Appendices
Previous App.A.6 has been deleted.
There have been minor updates to App.A, App.B and App.C.
In App.D and App.E survey categorisation has been developed for FPSO and FSO (previously marked
“Pending”).
— Survey scope for the Class Notation PROD has been developed in App.G.2.
Editorial Corrections
In addition to the above stated main changes, editorial corrections may have been made.
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
Contents – Page 4
CONTENTS
CHANGES – CURRENT ................................................................................................................... 3
1
Introduction ............................................................................................................................... 6
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
2
Commissioning process and definition of various stages....................................................... 8
2.1
2.2
3
Preamble ......................................................................................................................................................... 6
General............................................................................................................................................................ 6
Objective ......................................................................................................................................................... 6
Scope and application.................................................................................................................................... 6
Structure of this document............................................................................................................................ 6
How to use this document ............................................................................................................................. 6
References....................................................................................................................................................... 6
Abbreviations ................................................................................................................................................. 7
Detailed design ............................................................................................................................................... 8
Mechanical completion.................................................................................................................................. 8
Pre-commissioning .................................................................................................................... 9
3.1
3.2
3.3
3.4
3.5
3.6
Commissioning ............................................................................................................................................... 9
Integration testing.......................................................................................................................................... 9
Marine sea trial .............................................................................................................................................. 9
Delivery ......................................................................................................................................................... 10
Hook up......................................................................................................................................................... 10
Operation...................................................................................................................................................... 10
4 Commissioning procedures ....................................................................................................
5 DNV involvement in commissioning......................................................................................
6 Safety, health and environment .............................................................................................
App. A DNV typical survey categorization for drillships during mechanical completion
and commissioning of marine and drilling systems ....................................................
A.1
A.2
A.3
A.4
A.5
App. B
13
13
14
14
16
Category I systems for commissioning (for integration) ................................................................
Category II systems for commissioning (for integration) ...............................................................
Category I systems for commissioning (as independent systems)..................................................
Category II systems for commissioning (as independent systems) ................................................
Category III systems for commissioning (as independent system).................................................
17
17
18
18
20
DNV typical survey categorization for “jack-up” units during mechanical
completion and commissioning of marine and drilling systems ............................... 21
C.1
C.2
C.3
C.4
C.5
App. D
13
DNV typical survey categorization for semi-submersible units during
mechanical completion and commissioning of marine and drilling systems ........... 17
B.1
B.2
B.3
B.4
B.5
App. C
Category I systems for commissioning (for integration) ................................................................
Category II systems for commissioning (for integration) ...............................................................
Category I systems for commissioning (as independent systems)..................................................
Category II systems for commissioning (as independent systems) ................................................
Category III systems for commissioning (as independent system).................................................
10
12
12
Category I systems for commissioning (for integration) ................................................................
Category II systems for commissioning (for integration) ...............................................................
Category I systems for commissioning (as independent systems)..................................................
Category II systems for commissioning (as independent systems) ................................................
Category III systems for commissioning (as independent system).................................................
21
21
22
22
24
DNV typical survey categorization for FPSO units during mechanical completion
and commissioning of marine and production systems ............................................. 25
D.1
D.2
D.3
D.4
D.5
Category I systems for commissioning (for integration) ................................................................
Category II systems for commissioning (for integration) ...............................................................
Category I systems for commissioning (as independent systems)..................................................
Category II systems for commissioning (as independent systems) ................................................
Category III systems for commissioning (as independent system).................................................
DET NORSKE VERITAS AS
25
26
27
28
29
Recommended Practice DNV-RP-A205, October 2013
Contents – Page 5
App. E
DNV typical survey categorization for FSO units during mechanical completion
and commissioning of marine and production systems.............................................. 30
E.1
E.2
E.3
E.4
E.5
E.6
App. F
30
30
31
32
33
33
DNV Requirements related to marine, utility and safety systems ............................ 34
F.1
F.2
F.3
F.4
F.5
F.6
F.7
App. G
Category 1 systems for commissioning (for integration)................................................................
Category II systems for commissioning (for integration) ...............................................................
Category I systems for commissioning (as independent systems)..................................................
Category II systems for commissioning (as independent systems) ................................................
Category III systems for commissioning (as independent system).................................................
Category I systems for commissioning (class notation CRANE) ..................................................
Stability and watertight integrity.....................................................................................................
Fabrication and testing of offshore structures.................................................................................
Marine and machinery systems and equipment ..............................................................................
Electrical installations .....................................................................................................................
Instrumentation and telecommunication systems ...........................................................................
Fire protection systems ...................................................................................................................
Vessel operations ............................................................................................................................
34
35
36
42
51
53
56
Survey scope for specific class notations...................................................................... 59
G.1
G.2
DNV survey scope for DRILL ....................................................................................................... 59
DNV survey scope for PROD ....................................................................................................... 67
CHANGES – HISTORIC ................................................................................................................. 75
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
Sec.1 Introduction – Page 6
1 Introduction
1.1 Preamble
This Recommended Practice (RP) outlines the general best practices that lead to effective testing and
commissioning of marine and industrial systems onboard mobile offshore units in newbuilding projects. For
convenience, an extract of all DNV rules related to testing and commissioning of marine and industrial systems
have been included in this document. It should be noted that for more accurate applicable statutory and class
requirements related to testing and commissioning, applicable versions of the statutory and class rules as
specified in the contract shall be referred to. System categorizations included in the appendix are general in
nature and may not include all applicable systems that are specific to particular newbuilding projects and so,
this document should be used only as a guide. This document currently includes requirements related to drilling
units with the intention to include requirements related to other object types at a later stage.
1.2 General
DNV has recognized that the technical complexity of modern Offshore Installations is increasing due to
systems becoming more complex, more automated and more tightly integrated. This evolution provides
designers, shipyards, owners and other involved parties challenges in the management of testing and
commissioning equipment and systems onboard offshore units successfully.
1.3 Objective
This RP outlines recommended work processes for the testing and commissioning activities on offshore
newbuild units. This document shall be read as a guide to testing and commissioning equipment and systems
onboard Offshore Units. The document will help users in preparing or carrying out witnessing of testing and
commissioning activities to satisfy the requirements of classification and applicable statutory regulations where
DNV has delegation from such authorities.
It should be noted that final acceptance of commissioning is the owner's responsibility. This RP only covers
class and statutory related activities.
1.4 Scope and application
This guide is applicable to testing and commissioning activities onboard classed Mobile Offshore Units e.g.,
Drilling, Accommodation and FPSOs.
1.5 Structure of this document
This document contains:
— A general overview of testing and commissioning activities together with samples of typical contents of
testing and commissioning procedures including the ones for integration testing and commissioning.
— Extract of applicable DNV Service Specifications and DNV standards related to preparation, testing and
commissioning of various marine, utility and industrial systems.
— Categorization of marine, utility and industrial systems that can be used to decide on the extent of
involvement from various stakeholders.
The RP can be used as a check list for reviewing Commissioning procedures to assist preparation of
requirements related to class and applicable statutory regulations.
1.6 How to use this document
The main function of the RP is to ensure that the commissioning procedures contain all the relevant information
required by the applicable DNV Service Specifications and DNV Offshore Standards.
If the commissioning procedures are reviewed against this document, they should contain all the required
information to ensure compliance with the various offshore standards thus ensuring that testing and
commissioning activities are fully in compliance with the required Classification requirements.
1.7 References
Information and requirements provided in this RP are extracted from the following DNV Service
Specifications, Offshore Standards and Rules for Classification of Ships (Rules for Ships):
—
—
—
—
—
—
—
—
DNV-OSS-101
DNV-OSS-102
DNV-OS-A101
DNV-OS-C301
DNV-OS-C401
DNV-OS-D101
DNV-OS-D201
DNV-OS-D202
Rules for Classification of Offshore Drilling and Support Units
Rules for the Classification of Floating Production, Storage and Loading Units
Safety Principles and Arrangements
Stability and Watertight Integrity
Fabrication and Testing of Offshore Structures
Marine and Machinery Systems and Equipment
Electrical Installations
Automation, Safety, and Telecommunication Systems
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
Sec.1 Introduction – Page 7
—
—
—
—
DNV-OS-D301 Fire Protection
DNV-OS-E101 Drilling Plant
DNV-OS-E201 Oil and Gas Processing Systems
DNV Rules for Ship Pt.4 Ch.2, Ch.3, Ch.7, Ch.8, and Ch.14 / Pt.5 Ch.3 / Pt.6 Ch.3.
1.8 Abbreviations
Abbreviation
AC
BOP
CSG
DAT
DB
DC
DDM
DFMA
DP
DPS
ESD
E0
F&G
FPSO
FSO
FW
GMDSS
HP
HPU
HVAC
ICCP
ICMS
LER
LIR
LMRP
LP
LQ
LV
MC
MCC
MGPS
P & ID
PABX
PA/GA
PCR
PMS
PSD
QA
QC
QSP
SIT
SWBD
TA/ATA
UPS
VDU
VFD
WHC
Description
Alternating Current
Blow Out Preventer
Casing
Digital Audio Tape
Distribution Board
Direct Current
Derrick Drilling Machine
Design for Manufacture and Assembly
Dynamic Positioning
Dynamic Positioning System
Emergency Shut Down
Unmanned machinery space alarm
Fire & Gas (systems)
Floating Production, Storage and Offloading (Unit)
Floating Storage and Offloading (Unit)
Fresh Water
Global Maritime Distress Safety System
High Pressure
Hydraulic Power Unit
Heating, Ventilation and Air Conditioning
Impressed Current Cathodic Protection
Integrated Control and Management System
Local Electrical Room
Local Instrument Room
Lower Marine Riser Package
Low Pressure
Living Quarter
Low Voltage
Mechanical Completion
Main Control Center
Marine Growth Protection System
Piping & Instrument Diagram
Private Automatic Branch Exchange (Telephone System)
Public Address / General Alarm
Process Control Room
Power Management System
Process Shut Down
Quality Assurance
Quality Control
Quality Survey Plan
System Integration Test
Switchboard
Thruster Assisted/ Automatic Thruster Assisted
Uninterruptable Power Supply
Visual Display Unit
Variable Frequency Drive
Wellhead Control System
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Recommended Practice DNV-RP-A205, October 2013
Sec.2 Commissioning process and definition of various stages – Page 8
2 Commissioning process and definition of various stages
Commissioning of an offshore unit is a time consuming and complex process. A structured approach is a
necessity for a successful commissioning phase of the newbuilding projects. While the requirements for the
testing and commissioning are clearly specified in various applicable DNV standards, how exactly the
commissioning activities should be carried out is largely left to the Builder/Owners of the mobile offshore
units. For instance, there will be dependencies between the different packages. It is, however, a DNV
requirement to see that the testing requirements mentioned in our rules are carried out during commissioning.
It is often required by DNV offshore standards that the equipment is to be tested in “as installed” condition. So,
though similar tests have already been carried out during a factory acceptance test (FAT), a new test in installed
condition would be required. A typical example could be the offshore cranes. They will probably be overload
tested during FAT, but they will still be necessary to overload test in installed condition.
Before commissioning starts the responsible DNV surveyor and all stakeholders involved in preparing and
carrying out the testing and commissioning should also have an idea as to what activities are considered most
important to DNV and also what activities are not within the DNV scope. During commissioning it is also
important to be aware that the owner’s and the yard’s viewpoint as to what is DNV’s scope of work may not
be in harmony with the scope required by the DNV Offshore standards. It is also important to recognize that
owner/yard may have additional requirements e.g., related to performance or additional functionality, that may
be over and above the classification requirements of DNV.
2.1 Detailed design
When entering into the final stages of any project, the detailed design is expected to be fully completed,
reviewed and approved. Failure to complete the design in a satisfactory manner may undermine already
completed testing and commissioning, especially comments that may result in redesigning component or
systems. Any duplication in redoing testing and commissioning is not very efficient and will result in loss of
valuable time and additional cost. The preferred solution would be to have the design engineers available
during the commissioning stages. The design engineer can then confirm completion of the design activities and
advise what needs to be rectified, redesigned and followed up.
2.2 Mechanical completion
For most offshore projects mechanical completion (MC) is considered a natural and a logical step on the way
towards proper project completion. It is normal for the builder or system vendor to create mechanical
completion check lists for the actual equipment or system. Only some parts of mechanical completion is
covered in the DNV Offshore standards and is thus formally DNV scope of work. DNV generally maintain
oversight of most of the mechanical completion activities of the project through unscheduled surveys. Where
it is mandated by the Quality Survey Plan (QSP), a DNV surveyor may attend certain mechanical completion
activities. Some of the examples of such activities are:
— Pressure testing of piping.
— Installation of main engines/alignment.
— Cable installation / segregation of cables.
In this instruction, MC is completed when construction and installation of equipment, piping, instrumentation,
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Recommended Practice DNV-RP-A205, October 2013
Sec.3 Pre-commissioning – Page 9
cabling, electrical equipment, etc. have been demonstrated as physically complete. Dynamic tests are limited
to non-energised tests like cold alignment of shafting for motors, engines and generators. Further megger tests,
flushing and drying of piping systems, cleaning, etc. is included in this milestone. Typically, the MC will result
in a number of outstanding activities that must be rectified before any actual pre-commissioning, testing and
commissioning can commence. Normal findings typically include missing electrical equipment grounding,
lack of proper shielding of fuel pipes or hot surfaces, insufficient nozzle coverage for deluge systems, etc. The
evidence of the required certification of equipment should be verified during mechanical completion stage so
that there are no surprises before commencing pre-commissioning, testing and commissioning stages. Failure
to do so may jeopardize the safety of such activities.
3 Pre-commissioning
Pre-commissioning is the stage before commissioning which involves the verification of functional operability
of the equipment part or full systems. This stage of testing requires energising of equipment and introduction of
fluids in fluid piping systems. This is the stage where the vendor and/or the yard are carrying out independent
testing of the equipment/system. This is a “trial and error” phase where class normally do not attend. During
review and approval of commissioning procedures, it is important for the DNV surveyor to make sure that tests
required by the rules are carried out during the commissioning phase. It may be a challenge when the tests
required by the rules are carried out during pre-commissioning but not attended by a DNV Surveyor. This should
be highlighted during the review of the commissioning procedures. Pre-Commissioning would typically include:
— Loop testing.
— Motor no load runs.
— Equipment final alignments.
3.1 Commissioning
The phase after mechanical completion, pre commissioning and testing is often referred to as the
commissioning phase. The “commissioning of an offshore unit” is a very wide term and for the purpose of
classification, it refers to final checks, inspection and tests that every operational component or system goes
through to confirm operational readiness. Typically equipment/system commissioning will consist of:
— Functional testing of systems by start-up priority.
— Testing of ESD/PSD and F&G.
— Load tests and other equipment performance testing.
In the commissioning phase it will be verified that the installed equipment and system are working as intended
and that the rule requirements for the various equipment/system functionality are met. The rules will have
requirements for “performance”, e.g. number of starts for starting air receivers and “functionality”, e.g. safety
functions of boilers and incinerators.
For effective commissioning, it is important that the testing and commissioning of the different skids/packages
are given the right priority so that they happen in the right sequence/order. Very little commissioning can be
performed without the hydraulic ring line, power system, cooling water, pneumatic systems and other utilities
being functional and working properly. Typically, temporary arrangements should not be accepted for
commissioning. It should also be a general principle that commissioned equipment is not dismantled or
modified after testing and commissioning of the equipment/system is completed. Once the equipment/system
is tested and commissioning is completed it is good practice to have a close out meeting where the
commissioning procedures are signed, by owner and outstanding punch items are agreed.
3.2 Integration testing
Integration testing is a collective term for testing and commissioning of more than one system (a collection of
systems, sub-systems and equipment packages) to ensure compliance with project requirements. Many systems
onboard are integrated with other systems in one way or another. However, in this context, integration testing
is meant to cover the following but not limited to:
—
—
—
—
Complete functional testing of systems across equipment boundaries.
Final adjustments of alarm-limits, measuring instruments.
End to end testing of ESD/PSD and F&G.
Integrated testing of PROD/DRILL plants.
Many of the system integration tests are often carried out during the marine sea trial as all the relevant systems
and consumers may be required to be ready for such tests to be carried out. The trials can also be organised e.g.
with one drilling trial and one marine sea trial.
3.3 Marine sea trial
The marine sea trials typically focuses on propulsion, steering and utility systems functioning under normal
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Recommended Practice DNV-RP-A205, October 2013
Sec.4 Commissioning procedures – Page 10
operating conditions. A prerequisite for sea trials is that the major safety systems like fire fighting, life-saving
appliances, PA/GA, HVAC, etc. are satisfactorily commissioned ahead of sea trials. In addition, the inclining
test should be completed prior to taking the unit out on sea trial.
Sea trials are conducted to test a vessels performance and general seaworthiness. Testing of a vessels speed,
manoeuvrability, equipment and safety features are usually conducted during sea trial. However, this
demonstration of speed and manoeuvrability, etc. is normally more important for a merchant vessel than an
offshore unit. A merchant vessel will typically have a contract speed as part of the contract between the builder
and the owner. That is seldom the case for an offshore unit. The marine sea trial will typically consist of but
not limited to:
—
—
—
—
—
—
—
testing of Dynamic Positioning System
final commissioning of Ballast systems, Cooling water, Lube oil, Fuel Oil, HVAC, Thrusters, etc.
speed test
crash stop
turning test
E0 test (Unmanned machinery space alarms)
endurance test.
The marine sea trial is normally not relevant for fixed units or units without propulsion.
3.4 Delivery
Depending on type of unit, the successful completion of all testing and commissioning activities will trigger
the delivery of the unit. The level of completion will however vary from project to project. Typically a project
with a contract in place and a long transit to the operation area, the owner may prefer an early delivery with the
intention to close some of the outstanding items in transit. If a unit does not have a project in place, the owner
will typically aim for a higher level of completion before they will accept the unit. Equipment subject to class
approval that is not readily commissioned in accordance with approved testing and commissioning procedures
should be identified in the delivery documentation by issuance of relevant conditions of class. It should be
evaluated prior to delivery whether the outstanding class and statutory systems are minor in nature and does
not affect the safety and integrity of the unit that will allow the Class Society to issue appropriate Class and
Statutory Certificates. If critical systems e.g., fire fighting/detection, propulsion and steering, life-saving
appliances, navigational aids, etc. are not commissioned, Class and Statutory Certificates are not typically
issued.
3.5 Hook up
Hook up is mostly relevant for fixed units like FPSOs and other units that will stay on the same location for a
number of years, however some drilling units may require some testing of systems on first location. Typically
it means the hook up of risers to the unit and preparations required prior to first oil. Many of the vital
commissioning activities for such units will have to take place at location and cannot be completed during the
construction of the unit. Hook up is not typically included in the class scope but if safety and integrity of the
vessel is in question, Class Society typically evaluates the status of such operation.
3.6 Operation
Once the unit is in operation, there should not be any major outstanding class and statutory items carried over
from the newbuilding phase and procedures related to “units in operation” requirements should be followed.
4 Commissioning procedures
Two types of procedures are normally submitted for Review / Approval:
— System or Equipment Commissioning
— Integration Testing.
Typical examples of the contents list of these procedures are shown in the Figure 4-1 and Figure 4-2 below.
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Recommended Practice DNV-RP-A205, October 2013
Sec.4 Commissioning procedures – Page 11
SYSTEM COMMISSIONING PROCEDURE
1 SYSTEM DESCRIPTION
1.1
1.2
1.3
Commissioning Package
System Integration Description
Pre-requisites
2 OBJECTIVE
3 GENERAL
3.1
3.2
3.3
3.4
3.5
3.6
3.7
Safety requirements and precautions
Regulatory and project specific requirements
Participants (e.g. Owner / Vendor / Class Representative / Builder)
Kick-off meeting
Special / Temporary Tools / Equipment, Spare & Consumables
Traceability of documents & records
Punch list system
4 PRE-COMMISSIONING
4.1
Each package listed
5 OPERATIONAL MULTI-DISCIPLINE COMMISSIONING
5.1
Detailed test procedure with acceptance criteria
APPENDIXES
I.
II.
III.
IV.
Equipment Data Sheet / Information
Commissioning Test Results / Running Logs
Single Line Diagram / Block Diagram
P & ID
Figure 4-1
Typical content for a system commissioning procedure
INTEGRATION TEST PROCEDURE
1 SYSTEM DESCRIPTION
1.1
1.2
1.3
Commissioning Package
System Integration Description
Pre-requisites
2 OBJECTIVE
3 GENERAL
3.1
3.2
3.3
3.4
3.5
3.6
3.7
Safety Requirements and precautions
Sequence of Events
Participants (e.g. Owner / Vendor / Class Representative / Builder)
Kick-off meeting
Special / Temporary Tools / Equipment, Spare & Consumables
Traceability of documents & Records
Punch list system
4 PERFORMANCE OF INTEGRATION TEST
4.1
Detailed test procedure with acceptance criteria
5 OPERATIONAL MULTI-DISCIPLINE COMMISSIONING
5.1
Detailed test procedure with acceptance criteria
APPENDIXES
I.
II.
III.
IV.
Equipment Data Sheet / Information
Commissioning Test Results / Running Logs
Single Line Diagram / Block Diagram
P & ID
Figure 4-2
Typical content for a system integration test procedure
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Recommended Practice DNV-RP-A205, October 2013
Sec.5 DNV involvement in commissioning – Page 12
5 DNV involvement in commissioning
DNV’s involvement in testing and commissioning is limited to the requirements of statutory and class rules.
DNV surveyor will attend testing and commissioning to the extent specified in applicable Quality Survey
Program (QSP).
Survey scope shall be categorized as follows:
— Survey Category 1 - Statutory and Essential Systems for Safety (normally increased attendance by DNV).
— Survey Category 2 - Main Systems / Functionally Important (For Main and Additional Class Notations,
extent is based on the yard’s experience and the effectiveness of Yard’s QA/QC system).
— Survey Category 3 – Normally limited or no attendance required by surveyor.
The tables attached in the following appendices detail the “survey categorization during Mechanical
Completion and Commissioning of Marine and Drilling Systems” (based on Project System / Sub System List).
Drillships
Semi-Submersible units
Jack Ups
FPSO
FSO
App.A
App.B
App.C
App.D
App.E
6 Safety, health and environment
It is important to note that commissioning activities may introduce additional hazards to the process that may
not have been considered in the design phase i.e. the use of alternative media for testing in the absence of
hydrocarbons. When evaluating extent of checks and tests the philosophy of Primum non nocere or first do no
harm should be considered.
It should also be noted that the commissioning activities themselves may also introduce additional risks and
hazards into the workplace. Prior to start of any commissioning the relevant safe job analysis should be
performed where relevant dangers are highlighted and sufficient efforts are taken to minimize the risks.
It is important to ensure responsibilities are clearly defined and recognised; that there are suitable and sufficient
instructions e.g. procedures, method statements, workpacks; whether control and supervision of staff and
contractors is adequate; whether arrangements for calibration of any test equipment associated with
commissioning is adequate; there is adequate control of temporary commissioning aids e.g. E&I hardwired
links, isolations, spades in process lines.
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.A DNV typical survey categorization for drillships during mechanical completion and commissioning of marine and
drilling systems – Page 13
APPENDIX A DNV TYPICAL SURVEY CATEGORIZATION FOR
DRILLSHIPS DURING MECHANICAL COMPLETION AND
COMMISSIONING OF MARINE AND DRILLING SYSTEMS
A.1 Category I systems for commissioning (for integration)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Name of the System
Fire Main System
Inergen System
Fire Water Deluge System
Main Diesel Generator
Seawater Cooling System
Thruster Seawater Cooling System
Thruster
11Kv Switchboard (or equivalent)
690V HPU MCC (or equivalent)
690V Drilling VFD Switchboard (or equivalent)
690V Thruster VFD Switchboard (or equivalent)
230V AC UPS (or equivalent)
230V AC UPS Battery (or equivalent)
230V AC UPS Main Distribution Board (or equivalent)
230V AC UPS DB (or equivalent)
ICMS, Fire and Gas, ESD and DP with Sensor and Reference System
Telecom System
Electrical and Auxiliary Machinery Rooms Ventilation Systems
Engine Rooms Ventilation Systems
Port/Stbd/Aft Machinery Rooms Ventilation Systems
LQ HVAC
Power Management System
Dynamic Positioning System Test (DPS)
Machinery Unmanned Test
Integrated with
F&G/Deluge/control
F&G/HVAC/PA
F&G
PMS&S/T&DP
Consumer Capacity Test
SIT
S/T
PMS
SIT
SIT
DP/PMS
ESD
ESD
ESD
ESD
ESD/HVAC
ESD
ESD
ESD
ESD
ESD
DRILL/DP
CONTROL
E0
A.2 Category II systems for commissioning (for integration)
No.
1
2
3
4
5
Name of the System
Ballast System
Aux. Cooling F.W. System
460V LV Switchboard
230V LV Switchboard
PA Coverage Measurement
Integrated with
Semi Recovery Test
S/T and SIT
S/T
S/T
Normal Operation
(machinery Running)
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.A DNV typical survey categorization for drillships during mechanical completion and commissioning of marine and
drilling systems – Page 14
A.3 Category I systems for commissioning (as independent systems)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Name of the System
Lifeboat and Launch System
Fast Rescue Craft Launch Device System
Deck Crane
Emergency bilge system
Emergency Shut Off System (Quick closing valves)
Drill Floor Elevator
Escape Chute
Watertight Doors
Helideck Fire-Fighting System
Emergency Generator
Emergency Switchboard
Cement unit
230V AC UPS
230V AC UPS Battery
230V AC UPS Main Distribution Board
230V AC UPS DB
Dynamic Positioning System Test (DPS)
A.4 Category II systems for commissioning (as independent systems)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Name of the System
Misc.Lifesaving Equipment
Helicopter Refueling System
Ballast System
Dirty Drain System
Fire Main System
Inergen System
Fire Water Deluge System
Main Diesel Generator
Steam Generating System
Seawater Cooling System
Starting Air System For Main Engine
Thruster Seawater Cooling System
Sewage and Gray Water Discharge System
Anchor Winches
Thruster
Bilge System
Diesel Gen. F.W Cooling System
11Kv Switchboard (or equivalent)
690V HPU MCC (or equivalent)
690V Drilling VFD Switchboard (or equivalent)
690V Thruster VFD Switchboard (or equivalent)
230V AC UPS (or equivalent)
230V AC UPS battery (or equivalent)
230V AC UPS Main Distribution Board (or equivalent)
230V AC UPS DB (or equivalent)
Nav. and Signal Light
U-Light and Foghorn
Obstruction Light
Remote Sounding System
ICMS, Fire and Gas, ESD and DP with Sensor and Reference System
Telecom System
HPU For Vent Valve Operation
Ram Rig Travelling Yokes Main/Aux. (or equivalent)
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.A DNV typical survey categorization for drillships during mechanical completion and commissioning of marine and
drilling systems – Page 15
No.
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
Name of the System (Continued)
Tong Lift System
LIR / HVAC Room, HVAC
Derrick Drilling Machine (DDM)/Top Drive
Rotary Table Main/Aux.(Including Power Slips)
DAT System
Guideline Winch and Tensioner System
LP/HP Nitrogen System
Mud Bucket
Bulk Powder Handling System
Mud Storage and Transfer System
Mud Mixing and Additive System
Mud Supply System
Mud Return and Treatment System
Mud, Brine, Oil Storage and Transfer System System
BOP Package
Diverter Package
Tubular and Riser Feeding Machine/Shuttle, Main Rig
Lower Guiding Arm including Heads and Rail, Main/Aux
Trolley for Riser Guiding
Riser Chute
DP/DC, Casing and Riser Fingerboard, bellyboard
Bridge Crane in Derrick
Hydraulic Roughneck
Multi Scope Arm
Hydraulic Cathead, Brake Out, including Wire
Tail in Arm
Manipulator Arm (MPMA/DFMA)
Pipehandler Crane
Riser Handling Crane (w/ Rail)
BOP Skid/X-Mas/ LMRP Transportation/Handling
Miscellaneous Guides
Access Basket
BOP Overhead Crane/X-mas Tree Overhead Crane
Overhull/underhull Guiding
Utility Winch and Manrider Winch
Burner Boom
Ringline HPU and Distribution System
Ramrig HPU and Distribution System
Dual Derrick Simultaneous Operation
Integrated BOP and Riser Handling System
Sludge system
Loop Check
Mud, Cement, Choke and Kill Manifolds
LQ HVAC
Power Management System
Navigation Equipment
Machinery Unmanned Test
Anchor Test
PA Coverage Measurement
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.A DNV typical survey categorization for drillships during mechanical completion and commissioning of marine and
drilling systems – Page 16
A.5 Category III systems for commissioning (as independent system)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Name of the System
Monorail System
Winches and Towing Equipment
Drill Water System
Deck Bilge System
Service Air System
Steam and Drain System
Seawater Service System
Aux. Cooling F.W. System
Diesel Oil Transfer and Drain System
Lub. Oil Storage, Transfer and Drain System
Distilled and Make-Up Water System
Potable and Sanitary Supply System
Cold Starter Generator
Marine Growth Protection System
Heat Trace System
460V LV Switchboard
230V LV Switchboard
Small Power DB
Lighting and Small Power
Shore Connection Box
Column and Pontoon Machinery Rooms Ventilation Systems
Electrical and Auxiliary Machinery Rooms Ventilation Systems
Engine Rooms Ventilation Systems
Port/Stbd/Aft Machinery Rooms Ventilation Systems
HVAC Duck Air Leak Test Procedure for Hull and Topside
ICCP
Pneumatically Operated Door
Provision Cold Store and Freezer System
Noise Level Measurement
Vibration Level Measurement
Helideck Drains
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.B DNV typical survey categorization for semi-submersible units during mechanical completion and commissioning of
marine and drilling systems – Page 17
APPENDIX B DNV TYPICAL SURVEY CATEGORIZATION FOR SEMISUBMERSIBLE UNITS DURING MECHANICAL COMPLETION AND
COMMISSIONING OF MARINE AND DRILLING SYSTEMS
B.1 Category I systems for commissioning (for integration)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Name of the System
Fire Main System
Inergen System
Fire Water Deluge System
Main Diesel Generator
Seawater Cooling System
Thruster Seawater Cooling System
Thruster
11Kv Switchboard (or equivalent)
690V HPU MCC (or equivalent)
690V Drilling VFD Switchboard (or equivalent)
690V Thruster VFD Switchboard (or equivalent)
230V AC UPS (or equivalent)
230V AC UPS Battery (or equivalent)
230V AC UPS Main Distribution Board (or equivalent)
230V AC UPS DB (or equivalent)
ICMS, Fire and Gas, ESD & DP
With Sensor and Reference System
Telecom System
Column and Pontoon Machinery Rooms Ventilation Systems
Electrical and Auxiliary Machinery Rooms Ventilation Systems
Engine Rooms Ventilation Systems
Port/Stbd/Aft Machinery Rooms Ventilation Systems
LQ HVAC
Power Management System
Dynamic Positioning System Test (DPS)
Machinery Unmanned Test
Integrated with
F&G/Deluge/control
F&G/HVAC/PA
F&G
PMS&S/T&DP
Consumer Capacity Test
S/T
S/T
PMS
SIT
SIT
DP/PMS
ESD
ESD
ESD
ESD
ESD/HVAC
ESD
ESD
ESD
ESD
ESD
ESD
DRILL/DP
CONTROL
E0
B.2 Category II systems for commissioning (for integration)
No.
1
2
3
4
5
6
Name of the System
Anchor Winches
PA Coverage Measurement
Ballast System
Auxiliary Cooling Fresh Water System (#2)
460V LV Switchboard
230V LV Switchboard
DET NORSKE VERITAS AS
Integrated with
If Posmoor, TA/ATA
Normal operation
Semi recovery test
S/T & SIT
S/T
S/T
Recommended Practice DNV-RP-A205, October 2013
App.B DNV typical survey categorization for semi-submersible units during mechanical completion and commissioning of
marine and drilling systems – Page 18
B.3 Category I systems for commissioning (as independent systems)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Name of the System
Lifeboat and Launch System
Fast Rescue Craft Launch Device System
Deck Crane
Emergency Bilge System
Emergency Shut Off System (Quick closing valves)
Drill Floor Elevator
Escape Chute
Column Room Elevators
Water Tight Doors
Helideck Fire-Fighting System
Inclining Experiment and Light Weight Measurement Procedure
Emergency Generator
Emergency SWBD
Cement Unit
B.4 Category II systems for commissioning (as independent systems)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Name of the System
Misc. Lifesaving Equipment
Helicopter Refueling System
Dirty Drain System
Ballast System
Fire Main system
Inergen system
Fire Water Deluge system
Main Diesel Generator
Steam Generating System
Seawater Cooling System
Starting Air System for Main Engine
Thruster Seawater Cooling System
Sewage and Gray Water Discharge System
Anchor Winches
Thrusters
Bilge System
Diesel Generator Fresh Water Cooling System
11Kv Switchboard (or equivalent)
Navigation and Signal Light
690V HPU MCC (or equivalent)
690V Drilling VFD Switchboard (or equivalent)
690V Thruster VFD Switchboard (or equivalent)
230V AC UPS (or equivalent)
230V AC UPS Battery (or equivalent)
230V AC UPS Main Distribution Board (or equivalent)
230V AC UPS DB (or equivalent)
U-Light and Foghorn
Obstruction Light
Remote Sounding System
HPU for Vent Valve Operation
Ram Rig Travelling Yokes Main and Auxiliary (or equivalent)
Tong Lift System
LIR/HVAC Room, HVAC
Draw-Work
Derrick Drilling Machine (DDM)/Top Drive
Rotary Table Main / Auxiliary (Including Power Slips)
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.B DNV typical survey categorization for semi-submersible units during mechanical completion and commissioning of
marine and drilling systems – Page 19
No.
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Name of the System (Continued)
DAT System
Guideline Winch and Tensioner System
LP/HP Nitrogen System
Mud Bucket
Bulk Powder Handling System
Mud Storage and Transfer System
Mud Mixing and Additive System
Mud Supply System
Mud Return and Treatment System
Pontoon Mud, Brine, Oil Storage and Transfer System
BOP Package
Diverter Package
Tubular and Riser Feeding Machine/Shuttle, Main Rig
Lower Guiding Arm Includes Heads and Rail, Main and Auxiliary
Trolley For Riser Guiding
Riser Chute
DP/DC, Casing and Riser Fingerboard
Direct Lift Bridge Crane DP/DC/CSG, Main Rig / Auxiliary Rig
Hydraulic Roughneck
Multi Scope Arm (Casing Modem)
Hydraulic Cathead, Brake Out, Including Wire
Tail in Arm
Multi Manipulator Arm (DFMA)
Pipehandler Crane
Riser Handling Crane (with Rail)
Skids for BOP/X-mas tree/LMRP
Miscellaneous Guides
Access/cherrypicker Basket
BOP / X-Mas Tree Overhead Crane
Underhull Guiding Main / Auxiliary
Overhull/underhull Guiding
Utility Winch and Manrider Winch
Burner Boom
Ringline HPU and Distribution System
Ramrig HPU and Distribution System (or equivalent)
Dual Derrick Simultaneous Operation (if Fitted)
Integrated BOP and Riser Handling System
Sludge System
Loop Check
Drilling Control
Mud and Cement Manifolds
Navigation Equipment
Anchor Test
Leakage detection system
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.B DNV typical survey categorization for semi-submersible units during mechanical completion and commissioning of
marine and drilling systems – Page 20
B.5 Category III systems for commissioning (as independent system)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Name of the System
Monorail System
Air Winches and Towing Equipment
Drill Water System
Deck Bilge System
Service Air System
Steam and Drain System
Seawater Service System
Aux. Cooling FW system
Diesel Oil Transfer and Drain System
Lub Oil Storage, Transfer and Drain System
Distilled and Make-Up Water System
Potable and Sanitary Supply System
Cold Starter Generator
MGPS (Marine Growth)
Heat Trace System
460V LV Switchboard (or equivalent)
230V LV Switchboard (or equivalent)
Small Power Distribution Boards
Lighting and Small Power
Shore Connection Box
Column and Pontoon Machinery rooms ventilation systems
Electrical and Auxiliary Machinery rooms ventilation systems
Engine room ventilation systems
Port/ Stbd/Aft machinery rooms ventilation systems
HVAC Duct Air Leak Test Procedure for Hull and Topside
ICCP
Pneumatically Operated Door
Provision Cold Store and Freezer System
Noise Level Measurement
Vibration Level Measurement
Helideck Drains
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.C DNV typical survey categorization for “jack-up” units during mechanical completion and commissioning of marine
and drilling systems – Page 21
APPENDIX C DNV TYPICAL SURVEY CATEGORIZATION FOR “JACKUP” UNITS DURING MECHANICAL COMPLETION AND
COMMISSIONING OF MARINE AND DRILLING SYSTEMS
C.1 Category I systems for commissioning (for integration)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Name of the System
Fire Main System
Inergen System
Fire Water Deluge System
Main Diesel Generator
Seawater Cooling System
11Kv Switchboard
690V HPU MCC
690V Drilling VFD Switchboard
230V AC UPS
230V AC UPS Battery
230V AC UPS Main Distribution Board
230V AC UPS DB
ICMS, Fire and Gas and ESD
With Sensor and Reference System
Telecom System
Electrical and Auxiliary Machinery Rooms Ventilation Systems
Engine Rooms Ventilation Systems
Port/Stbd/Aft Machinery Rooms Ventilation Systems
LQ HVAC
Power Management System
Machinery Unmanned Test
Jacking motors
Jacking control system
Integrated with
F&G/Deluge/control
F&G/HVAC/PA
F&G
PMS&S/T&DP
Consumer Capacity Test
PMS
SIT
SIT
ESD
ESD
ESD
ESD
ESD/HVAC
ESD
ESD
ESD
ESD
ESD
DRILL/DP
E0
Jacking trial
Jacking trial
C.2 Category II systems for commissioning (for integration)
No.
1
2
3
4
5
Name of the System
Fire water lift with submerged pumps
PA Coverage Measurement
Auxiliary Cooling Fresh Water System (#2)
460V LV Switchboard
230V LV Switchboard
DET NORSKE VERITAS AS
Integrated with
F&G/Deluge/control
Normal operation
S/T and SIT
S/T
S/T
Recommended Practice DNV-RP-A205, October 2013
App.C DNV typical survey categorization for “jack-up” units during mechanical completion and commissioning of marine
and drilling systems – Page 22
C.3 Category I systems for commissioning (as independent systems)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Name of the System
Lifeboat and Launch System
Fast Rescue Craft Launch Device System
Deck Crane
Emergency Bilge System
Emergency Shut Off System (Quick closing valves)
Drill Floor Elevator
Escape Chute
Water Tight Door
Helideck Fire-Fighting System
Inclining Experiment and Light Weight Measurement Procedure
Emergency Generator
Emergency SWBD
Cement Unit
Cantilever
Rack Chocking Device
Accommodation Unit Gangway Test
230V AC UPS
230V AC UPS Battery
230V AC UPS Main Distribution Board
230V AC UPS DB
C.4 Category II systems for commissioning (as independent systems)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Name of the System
Misc. Lifesaving Equipment
Helicopter Refueling System
Dirty Drain System
Fire Main System
Inergen System
Fire Water Deluge System
Main Diesel Generator
Steam Generating System
Seawater Cooling system (including Buffer Tank alarms if Fitted)
Starting Air System for Main Engine
Sewage and Gray Water Discharge System
Bilge System
Diesel Generator Fresh Water Cooling System
11Kv Switchboard or equivalent
690V HPU MCC (or equivalent)
690V Drilling VFD Switchboard (or equivalent)
Navigation and Signal Light
U-Light and Foghorn
Obstruction Light
Remote Sounding System
ICMS, Fire and Gas and ESD
Telecommunication System
HPU for Vent Valve Operation
Ram Rig Travelling Yokes Main and Auxiliary (or equivalent)
Tong Lift System
LIR/HVAC Room, HVAC
Draw-Work
Derrick Drilling Machine (DDM)/Top Drive
Rotary Table Main / Auxiliary (Including Power Slips)
Mud Bucket
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.C DNV typical survey categorization for “jack-up” units during mechanical completion and commissioning of marine
and drilling systems – Page 23
No.
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
Name of the System (Continued)
Bulk Powder Handling System
Mud Storage and Transfer System
Mud Mixing and Additive System
Mud Supply System
Mud Return and Treatment System
Mud, Brine, Oil Storage and Transfer System
BOP Package
Diverter Package
Lower Guiding Arm Includes Heads and Rail, Main and Auxiliary
Direct Lift Bridge Crane DP/DC/CSG, Main Rig / Auxiliary Rig
Hydraulic Roughneck
Multi Scope Arm (Casing Modem)
Hydraulic Cathead, Brake Out, Including Wire
Tail in Arm
Multi Manipulator Arm (DFMA)
Pipehandler Crane
Skids for BOP/X-mas tree/LMRP
Miscellaneous Guides
Access Basket
BOP / X-Mas Tree Overhead Crane
Utility Winch and Manrider Winch
Burner Boom
Ringline HPU and Distribution System
Ramrig HPU and Distribution System
Dual Derrick Simultaneous Operation
Sludge System
Loop Check
Drilling Control
Mud and Cement Manifolds
Navigation Equipment
Anchor Test (if fitted for temp and emergency mooring)
Ballast System/ Pre Load System
Spud can HP water injection
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.C DNV typical survey categorization for “jack-up” units during mechanical completion and commissioning of marine
and drilling systems – Page 24
C.5 Category III systems for commissioning (as independent system)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Name of the System
Monorail System
Air Winches and Towing Equipment
Drill Water System
Deck Bilge System
Service Air System
Steam and Drain System
Seawater Service System
Diesel Oil Transfer and Drain System
Lube Oil Storage, Transfer and Drain System
Distilled and Make-Up Water System
Potable and Sanitary Supply System
Cold Starter Generator
MGPS (Marine Growth) (if fitted for spud cans)
Heat Trace System
Small Power DB
Lighting and Small Power
Shore Connection Box
HVAC Duct Air Leak Test Procedure for Hull and Topside
Pneumatically Operated Door
Provision Cold Store and Freezer System
Noise Level Measurement
Vibration Level Measurement
Helideck Drains
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.D DNV typical survey categorization for FPSO units during mechanical completion and commissioning of marine and
production systems – Page 25
APPENDIX D DNV TYPICAL SURVEY CATEGORIZATION FOR FPSO
UNITS DURING MECHANICAL COMPLETION AND COMMISSIONING
OF MARINE AND PRODUCTION SYSTEMS
D.1 Category I systems for commissioning (for integration)
No.
Name of the System
Integrated with*
1
2
3
4
5
6
7
8
9
10
Watertight Doors and Hatches
Communication – PA/GA
ESD/PSD System
F&G Detection Systems
UPS for Critical Control (PCS/DP/PMS)
HVAC Systems
Main Power Generation and Distribution
Main Fire Pump and Fire Water System
Helifuel Fire Fighting System
Specific Area Fire Fighting Systems i.e. Foam, CO2, Inergen, Water Spray
Systems
Topsides Fire Water Deluge Systems
Dynamic Positioning System (DPS), Steering and Propulsion and associated
equipment
Wellhead Control System (WHC)
Riser Quick Connect/Disconnect System
Offloading Quick Connect/Disconnect System including telemetry
Position Monitoring System
VMS
ESD/PSD/F&G
ICSS
ICSS
ESD
ESD/F&G
ESD/PMS
ESD/F&G
ESD/F&G
ESD/F&G
11
12
13
14
15
16
*
ESD/F&G
ICSS/ESD
ESD/PSD
ESD/PSD
ESD/PSD/VMS
ICSS/ESD
Where an integrated control and safety system is employed the control System architecture will define which systems the
integrated testing should interface with and may include ICSS/ESD/PSD/F&G/PCS/DP/PMS/VMS.
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.D DNV typical survey categorization for FPSO units during mechanical completion and commissioning of marine and
production systems – Page 26
D.2 Category II systems for commissioning (for integration)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
*
Name of the System
Ballast System
Fuel oil Transfer System
Lube oil Transfer System
Seawater Cooling System (Marine)
Starting Air System For Main Engine (Marine)
Bilge System
Inert Gas System
Cargo Pumping, Control and Monitoring Systems
Production Riser System
Topside Nitrogen System
Inlet Manifold
Test Manifold
Separation System
Test Separation System
Process Heating System
Process Cooling System
Closed Drain System
Produced Water Treatment and Disposal System
Seawater Treatment and Injection System
Gas Treatment System
Glycol Regeneration Systems
Fuel Gas Treatment System
Process Relief and Depressurisation Systems
Gas Disposal System
Gas Compression System
Oil Export System
Gas Export System
Pipeline Pigging Systems
Methanol Storage and Injection Systems
Chemical Storage and Injection Systems
Export Riser System
Gas Injection Systems
Machinery Unmanned/Watch Call Alarm System (E0)
Offshore Crane
Helideck Status Lights (Wave off)
Topside Power Generation System
Steam System
Integrated with*
ICSS
VMS
VMS
VMS
VMS
VMS
VMS
PSD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD/PCS
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
VMS
ESD
F&G
ESD
ESD
Where an integrated control and safety system is employed the control System architecture will define which systems the
integrated testing should interface with and may include ICSS/ESD/PSD/F&G/PCS/DP/PMS/VMS.
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.D DNV typical survey categorization for FPSO units during mechanical completion and commissioning of marine and
production systems – Page 27
D.3 Category I systems for commissioning (as independent systems)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Name of the System
Lifeboat and Launch System
Emergency Lighting
Navigation Lights
Structural Marking (U-Light and Foghorn)
Steering Gear and Control System
Watertight Doors and hatches
Diving System
Communication – GMDSS, PA/GA, PABX
ESD/PSD System
F&G Detection Systems
Emergency Generator and Emergency Switchboard System
Emergency Generator Starting System (Air or Battery)
Emergency Motor Control Centre (to control fire pump and other emergency services)
Transitional Source of Power
UPS for PA/GA/PABX
UPS for GMDSS
UPS for emergency lighting
UPS ICSS system *define or UPS for ESD/PSD/F&G/PCS/DP/PMS
Fuel Oil System for Main Power Generation
Lube oil System for Main Power Generation
Fresh Water Cooling System for Main Power Generation
HVAC for propulsion system
HVAC for Main Power Generation
Main Power Generation and Distribution
Emergency Shut Off System (Quick closing valves)
Fast Rescue Craft Launch Device System
Emergency bilge system
Escape routes
Liferafts and Escape to Sea
Helideck Fire-Fighting System
Main Fire Pump and Fire Water System
Helifuel Fire Fighting System
Specific Area Fire Fighting Systems i.e. Foam, CO2, Inergen, Water Spray Systems
Topsides Fire Water Deluge Systems
Deck Foam System
Dynamic Positioning System (DPS), Steering and Propulsion and associated equipment
Wellhead Control System (WHC)
Riser Quick Connect/Disconnect System
Offloading Quick Connect/Disconnect System
Position Monitoring System
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.D DNV typical survey categorization for FPSO units during mechanical completion and commissioning of marine and
production systems – Page 28
D.4 Category II systems for commissioning (as independent systems)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
Name of the System
Misc. Lifesaving Equipment
Helicopter Refuelling System
Ballast System
Hazardous Open Drain System
Non Hazardous Open Drain System
Mooring Line Tension Measuring System
Fuel oil Transfer System
Lube oil Transfer System
Steam Generating System (Marine)
Seawater Cooling System (Marine)
Starting Air System For Main Engine (Marine)
Control Air System
Sewage and Gray Water Discharge System
Anchoring System and Winches
Thrusters not part of steering or propulsion
Bilge System
Main Lighting Systems
Topside Umbilical Termination Unit
Turret Swivel Systems
Inert Gas System
Cargo Pumping, Control and Monitoring Systems
Production Riser System
Topside Nitrogen System
Inlet Manifold
Test Manifold
Separation System
Test Separation System
Process Heating System
Process Cooling System
Closed Drain System
Produced Water Treatment and Disposal System
Seawater Treatment and Injection System
Gas Treatment System
Glycol Regeneration Systems
Gas Compression System
Fuel Gas Treatment System
Process Relief and Depressurisation Systems
Gas Disposal System
Oil Export System
Gas Export System
Pipeline Pigging Systems
Methanol Storage and Injection Systems
Chemical Storage and Injection Systems
Export Riser System
Gas Injection Systems
HVAC for Hazardous Areas
LQ HVAC
Individual HVAC Systems (LER, PCR, Topside Power Generation Enclosure)
HVAC for Engine Rooms and other Machinery spaces
Navigation Equipment
Machinery Unmanned/Watch Call Alarm System (E0)
Offshore Crane
Helideck Status Lights (Wave off)
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.D DNV typical survey categorization for FPSO units during mechanical completion and commissioning of marine and
production systems – Page 29
No.
54
Name of the System (Continued)
Topside Power Generation System
D.5 Category III systems for commissioning (as independent system)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Name of the System
Deck Bilge System
Service Air System
Steam and Drain System
Seawater Service System
Aux. Cooling F.W. System
Diesel Oil Transfer and Drain System
Potable and Sanitary Supply System
Cold Starter Generator
MGPS (Marine Growth)
Heat Trace System
Small Power DB
Small Power
Shore Connection Box
Electrical and Auxiliary Machinery Rooms Ventilation Systems
Impressed Current Protection System (ICCP)
Pneumatically Operated Door
Provision Cold Store and Freezer System
Helideck Drains
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.E DNV typical survey categorization for FSO units during mechanical completion and commissioning of marine and
production systems – Page 30
APPENDIX E DNV TYPICAL SURVEY CATEGORIZATION FOR FSO
UNITS DURING MECHANICAL COMPLETION AND COMMISSIONING
OF MARINE AND PRODUCTION SYSTEMS
E.1 Category 1 systems for commissioning (for integration)
No.
Name of the System
Integrated with*
1
2
3
4
5
6
7
8
9
10
11
12
13
Watertight Doors and Hatches
Communication – PA/GA
ESD/PSD System
F&G Detection Systems
UPS for Critical Control (PCS/DP/PMS)
HVAC Systems
Main Power Generation and Distribution
Main Fire Pump and Fire Water System
Helifuel Fire Fighting System
Specific Area Fire Fighting Systems i.e. Foam, CO2, Inergen, Water Spray Systems
Inlet Flowline or Riser Quick Connect/Disconnect System
Offloading Quick Connect/Disconnect System including telemetry
Position Monitoring System
VMS
ESD/PSD/F&G
ICSS
ICSS
ESD
ESD/F&G
ESD/PMS
ESD/F&G
ESD/F&G
ESD/F&G
ESD/PSD
ESD/PSD/VMS
*
Where an integrated control and safety system is employed the control System architecture will define which systems the
integrated testing should interface with and may include ICSS/ESD/PSD/F&G/PCS/DP/PMS/VMS.
E.2 Category II systems for commissioning (for integration)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
*
Name of the System
Ballast System
Fuel oil Transfer System
Lube oil Transfer System
Seawater Cooling System (Marine)
Starting Air System For Main Engine (Marine)
Bilge System
Inert Gas System
Cargo Pumping, Control and Monitoring Systems
Inlet flowline or riser System
Oil Export System
Pipeline Pigging Systems
Methanol Storage and Injection Systems
Chemical Storage and Injection Systems
Export Riser System
Machinery Unmanned/Watch Call Alarm System (E0)
Offshore Crane
Helideck Status Lights (Wave off)
Integrated with*
ICSS
VMS
VMS
VMS
VMS
VMS
VMS
PSD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
PSD/ESD
VMS
ESD
F&G
Where an integrated control and safety system is employed the control System architecture will define which systems the
integrated testing should interface with and may include ICSS/ESD/PSD/F&G/PCS/DP/PMS/VMS.
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.E DNV typical survey categorization for FSO units during mechanical completion and commissioning of marine and
production systems – Page 31
E.3 Category I systems for commissioning (as independent systems)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
19
20
21
22
23
24
26
27
28
29
30
31
32
33
34
35
36
37
38
Name of the System
Lifeboat and Launch System
Emergency Lighting
Navigation Lights
Structural Marking (U-Light and Foghorn)
Watertight Doors and hatches
Diving System
Communication – GMDSS, PA/GA, PABX
ESD/PSD System
F&G Detection Systems
Emergency Generator and Emergency Switchboard System
Emergency Generator Starting System (Air or Battery)
Emergency Motor Control Centre (to control fire pump and other emergency services)
UPS for PA/GA/PABX
UPS for GMDSS
UPS for emergency lighting
UPS ICSS system* define or UPS for ESD/PSD/F&G/PCS/DP/PMS
Fuel Oil System for Main Power Generation
Lube oil System for Main Power Generation
Fresh Water Cooling System for Main Power Generation
HVAC for propulsion system
HVAC for Main Power Generation
Main Power Generation and Distribution
Emergency Shut Off System (Quick closing valves)
Fast Rescue Craft Launch Device System
Emergency bilge system
Escape routes
Liferafts and Escape to Sea
Helideck Fire-Fighting System
Main Fire Pump and Fire Water System
Helifuel Fire Fighting System
Specific Area Fire Fighting Systems i.e. Foam, CO2, Inergen, Water Spray Systems
Fire Water Deluge Systems
Deck Foam System
Inlet Flowline or Riser Quick Connect/Disconnect System
Offloading Quick Connect/Disconnect System
Position Monitoring System
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.E DNV typical survey categorization for FSO units during mechanical completion and commissioning of marine and
production systems – Page 32
E.4 Category II systems for commissioning (as independent systems)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Name of the System
Misc.Lifesaving Equipment
Helicopter Refueling System
Ballast System
Hazardous Open Drain System
Non Hazardous Open Drain System
Mooring Line Tension Measuring System
Fuel oil Transfer System
Lube oil Transfer System
Steam Generating System (Marine)
Seawater Cooling System (Marine)
Starting Air System for Main Engine (Marine)
Control Air System
Sewage and Gray Water Discharge System
Anchoring System and Winches
Thrusters not part of steering or propulsion
Bilge System
Main Lighting Systems
Inert Gas System
Cargo Pumping, Control and Monitoring Systems
Gas Disposal System
Oil Export System
Pipeline Pigging Systems
Methanol Storage and Injection Systems
Chemical Storage and Injection Systems
Export Riser System
HVAC for Hazardous Areas
LQ HVAC
Individual HVAC Systems (LER, PCR, Topside Power Generation Enclosure)
HVAC for Engine Rooms and other Machinery spaces
Navigation Equipment
Machinery Unmanned/Watch Call Alarm System (E0)
Offshore Crane
Helideck Status Lights (Wave off)
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.E DNV typical survey categorization for FSO units during mechanical completion and commissioning of marine and
production systems – Page 33
E.5 Category III systems for commissioning (as independent system)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
19
Name of the System
Deck Bilge System
Service Air System
Steam and Drain System
Seawater Service System
Aux. Cooling F.W. System
Diesel Oil Transfer and Drain System
Potable and Sanitary Supply System
Cold Starter Generator
MGPS (Marine Growth)
Heat Trace System
Small Power DB
Small Power
Shore Connection Box
Electrical and Auxiliary Machinery Rooms Ventilation Systems
Impressed Current Protection System (ICCP)
Pneumatically Operated Door
Provision Cold Store and Freezer System
Helideck Drains
E.6 Category I systems for commissioning (class notation CRANE)
No.
1
Name of the System
Deck Crane
DET NORSKE VERITAS AS
APPENDIX F DNV REQUIREMENTS RELATED TO MARINE, UTILITY AND SAFETY SYSTEMS
F.1 Stability and watertight integrity
System / Equipment DNV OS /
Description
Rule Reference
Inclining Test
DNV-OS-C301
Ch.2 Sec.1 [3.1]
Watertight /
DNV-OS-C301
Weathertight Doors Ch.2 Sec.2 [9.1]
and Hatches
DET NORSKE VERITAS AS
DNV-OS-C301
Ch.2 Sec.2 [9.3]
— Confirm the results of an inclining test are gathered for the first unit of a design when it is near to completion as possible, to determine
accurately the light ship data (weight and position of center of gravity).
— Pressure testing of watertight doors and hatches:
- Before installation (i.e. normally at the manufacturer), confirm that watertight doors or hatch covers are hydraulically tested with
exposure to the side most prone to leakage.
- The test pressure shall correspond to the pressure height + 0.05 N/mm2 (5 m water), and the acceptance criteria shall be:
- No leakage for doors or hatch covers with gaskets, maximum water leakage 1 litre per minute for doors or hatch covers with metallic
sealing.
— Hose testing of all watertight and weathertight doors and hatch covers:
- After installation onboard, confirm watertight and weathertight doors or hatch covers are hose tested. The water pressure shall be
at least 0.2 mm2 (2 bar), and the nozzle shall be held at a distance of maximum 1.5 m from the door or hatch cover. No leakage
shall be accepted.
- As an alternative to hose testing, chalk testing may be applied under special circumstances, upon acceptance by all parties involved.
— Function testing of watertight doors and hatch covers
— After installation onboard the operation, control and alarm functions for all watertight doors and hatch covers shall be tested. The
following shall be verified:
- For each door, the total closing time shall not be less than 30 seconds or more than 60 seconds.
- It shall be possible to close all doors or hatch covers in one group simultaneously within 60 seconds from the control room.
- It shall be possible to open and close the doors or hatch covers three times by means of a local device and stored energy.
- It shall be possible for a person to pass through the doorway or hatchway and at the same time hold both handles in the “open
position”.
- It shall be possible to open the door or hatch cover locally from both sides, after being closed centrally, and the door or hatch cover
shall close automatically after such opening.
- The door or hatch cover shall be mechanically locked in a closed position.
- The light and sound signals shall give warning when the door or hatch cover is closed centrally.
- The remote position indicator for doors or hatch covers shall function properly.
- The alarms for the following conditions shall function properly:
- Start of standby pump, loss of power to control, alarm and indicating system, low pressure (below lowest permissible).
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 34
DNV-OS-C301
Ch.2 Sec.2 [9.2]
DNV Surveillance Focus
F.2 Fabrication and testing of offshore structures
System / Equipment DNV OS /
Description
Rule Reference
Tanks
DNV-OS-C401
Ch.2 Sec.4 [2.1]
Corrosion Protection DNV-OS-C401
Systems
Ch.2 Sec.5 [1.5]
— Testing of Tightness
— Confirm that all tanks are tested for tightness. The test may be performed as a hydraulic test using water. Alternatively, tightness may
be confirmed by use of compressed air and an efficient indicating liquid. Void spaces not part of the structural integrity in the
accidental limit state (ALS) can normally be omitted from this tightness test. A void space defined as a confined space is typically not
intended to carry liquid cargo, ballast or fuel. Gas tightness of e.g. boundaries between cofferdams/pump room and adjacent nonhazardous area, may be subject to appropriate methods accepted by the purchaser.
— Tightness test by compressed air and an effective indicating liquid shall be carried out before protective coating has been applied. A
thin layer (< 50 m) of primer with documented chemical composition may be applied prior to testing. Tightness may also be confirmed
by the following methods: vacuum testing of individual welds, injection of air into root gap of fillet welds (fillet air test). Tightness
testing of continuous automatic and multipass semiautomatic weld processes in butt welds of plated boundaries may be omitted.
— If compressed air and an efficient indicating liquid are used, the air pressure shall not exceed 0.2 bar and shall be reduced to a smaller
value, but not less than 0.15 bar before inspection. The method shall give clear indications of small leaks. Care should be taken so that
the pressure in the tank does not exceed 0.2 bar above atmospheric pressure because of unexpected raise in ambient temperature,
falling atmospheric pressure or otherwise. The pressure shall be measured by an accurate method, such as a U-shaped tube with water.
Means should be provided to release pressure in emergency case.
— If water is applied, the pressure shall not be less than 25 kN/m2 at the top of the tank. The outside of the tank shall be dry and clean.
— For hose testing, the hose pressure shall be at least 200 kN/m2 and applied at a maximum distance of 1.5 m. The nozzle inside diameter
shall be at least 12.0 mm.
— Structural Tests
— Confirm that at least one of several identical tanks undergo a structural test. By agreement, the test shall be carried out by applying
water. In agreement with the purchaser, the structural test may be omitted for a series of sister vessels. Protective coating may be
applied before a structural test is carried out.
— Bulkheads between tanks arranged to carry different liquids shall be hydraulically tested from at least one side.
— The test pressure height shall be taken as the design pressure height for load case a) as defined in the relevant offshore object standard.
The pressure shall be maintained for at least 20 minutes. The filling rate shall be restricted to avoid excessive dynamic design pressure.
— The structural test is considered successful if no significant deformations or other damages have developed during the test.
— Confirm that closing appliances for access openings in decks, bulkheads (etc.) which shall be watertight, are separately tested before
installation. Structural testing of other parts outside tanks may be required.
— If structural tests reveal weaknesses in the structure, further testing is required.
— Installation of impressed current cathodic protection system:
- Confirm that testing of the proper functioning of the systems is carried out. The test method and results shall be reported.
- Final testing and acceptance of the system shall be performed after installation.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 35
DET NORSKE VERITAS AS
DNV-OS-C401
Ch.2 Sec.4 [3.1]
DNV Surveillance Focus
F.3 Marine and machinery systems and equipment
System / Equipment
Description
All Systems /
Equipment
DNV OS /
Rule Reference
DNV-OS-D101
Ch.3 Sec.1
[5.1 to 5.3]
DNV Surveillance Focus
— General
- Commissioning shall be in accordance with submitted procedures reviewed and approved by DNV in advance of the
commissioning. Commissioning shall be witnessed by a surveyor and is considered complete when all systems, equipment and
instrumentation are operating satisfactorily.
— System and Equipment Checks
- During commissioning, all items of pipework and equipment shall be checked for compliance with approved documentation and
commissioning procedures.
DNV-OS-C301
Ch.2 Sec.2 [3.2]
DET NORSKE VERITAS AS
DNV-OS-D101
Ch.2 Sec.1 [1.7]
DNV-OS-D101
Ch.2 Sec.2 [5.2]
DNV-OS-D101
Ch.2 Sec.6
[6.1/6.2]
DNV-OS-D101
Ch.2 Sec.6 [7.1]
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 36
All Piping Systems
— Functional Testing
- During commissioning, the systems shall be functionally tested, as practicable, in accordance with approved procedures.
— Confirm positive functional testing results of closure devices in way of watertight boundaries from control room / station, as well as
positive remote confirmation of the same closure devices.
— Where valves are provided at watertight boundaries to maintain watertight integrity, these valves shall be capable of being operated
from a control room. Valve position indicators shall be provided at the remote control station.
— For remotely controlled valves, confirm that a failure in power supply (electrical, hydraulic, and pneumatic) does not cause opening
of closed valves or closing of open valves on fuel oil tanks and in cooling water system for propulsion and power generating
machinery.
— Confirm that all valve bodies are subject to a hydrostatic test by the manufacturer, at a pressure equal to 1.5 times the nominal
pressure. The nominal pressure is the maximum allowable working pressure at room temperature. The test pressure need not be more
than 70 bar in excess of the nominal pressure. For valves fitted on unit or installation’s side and bottom, the test pressure shall not be
less than 5 bar.
— Confirm that butterfly valves fitted on unit or installation’s side and bottom are hydrostatically tested at a pressure equal to 5 bar
applied independently on each side of the closed disc.
— Hydrostatic testing required after assembly on board
— The piping shall be hydrostatically tested in accordance with the following:
- Fuel oil piping, heating coils in tanks, bilge, ballast and fire pipes, steam pipes, compressed air pipes and feed pipes of class III:
- 1.5 maximum working pressure, minimum 4 bar.
- Hydraulic piping:
- 1.5 maximum working pressure for 15 minutes. Test pressure need not exceed working pressure by more than 70 bar.
- Piping systems made from non-metallic material:
- 1.5 maximum working pressure, minimum six (6) bar, minimum duration one (1) hour.
— Confirm that all piping systems are properly flushed, checked for leakage and functionally tested under working conditions.
DNV OS /
Rule Reference
DNV-OS-D101
Ch.2 Sec.2 [4.2]
Pump Capacity
Testing
DNV-OS-D101
Ch.2 Sec.2 [4.3]
Ballast, Bilge and
Drainage Systems General
DNV-OS-D101
Ch.2 Sec.3 [2.1]
DET NORSKE VERITAS AS
Ballast, Bilge and
Drainage Systems –
Column Stabilized
Units and
Installations
Lubricating Oil
Systems
DNV-OS-D101
Ch.2 Sec.3 [3.1]
DNV-OS-D101
Ch.2 Sec.4 [3.4]
DNV Surveillance Focus (Continued)
— Confirm that all pump housings, excluding those for pumps which transfer stored crude oil, are hydrostatically tested to 1.5 times the
maximum working pressure. The test pressure need not exceed the maximum working pressure by more than 70 bar.
- Pumps for transfer of crude oil shall be tested at 1.3 times the maximum working pressure, and to a minimum of 14 bar.
- For centrifugal pumps, the maximum working pressure shall be the maximum pressure head on the head-capacity curve.
- For displacement pumps, the maximum working pressure shall not be less than the relief valve opening pressure.
- The steam side of the steam driven pumps shall be hydraulically tested to 1.5 times the steam pressure.
— Hydrostatic testing of pump housings on submerged pumps is normally not required.
— Confirm that pump capacities are checked with the pumps running at design condition (rated speed and pressure head, viscosity, etc).
- The capacity test need not be applied for pump designs where satisfactory tests have been previously performed and documented.
— Ballast and Bilge System
- Confirm functional redundancy of system such that any tank may be de-ballasted by either pump.
- Confirm installed pump capacity meets design requirements.
- Confirm functionality of the central Ballast and Bilge Control Station testing.
- Witness final comprehensive testing of the Ballast and Control System.
- Confirm self-closure of ballast valves in emergency situations and remote status indication.
- Confirm power supply function from normal and emergency switchboards.
- Confirm status indications remain following shutdown of power generation (UPS function).
— Bilge System
- Confirm functional redundancy of system such that the bilge of any tank / compartment may be removed by either pump.
- Confirm free draining arrangements for tanks, compartments and voids fitted with such.
- Confirm location and function of both branch bilge suction lines fitted within pump / essential machinery rooms.
- Confirm location and function of emergency bilge suction within pump / essential machinery rooms.
- Confirm installed pump capacity meets design requirements.
— Confirm that the general requirements are complied with, unless otherwise specified herein.
- The ballast system is to provide the capability to bring the unit or installation, while in an intact condition, from the maximum
normal operating draught to a severe storm draught, within three (3) hours.
Confirm proper function of remote shut-off of normally open valves as fitted to lube oil tanks above double bottom and located below top
of the tank or overflow outlet.
— This requirement may be waived for small tanks with volume less than 0.5 m3, and tanks which upon unintended closing of the valves,
may result in loss of main functions.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 37
System / Equipment
Description
Pump Hydrostatic
Testing
System / Equipment DNV OS /
Description
Rule Reference
Fuel Oil Systems
DNV-OS-D101
Ch.2 Sec.4
[3.4 to 3.6 and 3.9]
DNV Surveillance Focus (Continued)
— Fuel Oil Tank Valves
- Confirm proper function from central position outside engine room of remote shut-off valves as fitted to fuel oil (FO) tanks and
located below top of the tank or overflow outlet. Also, confirm the proper location of remote control station.
— Arrangement of Valves
- Confirm location and proper function of fuel oil line shut-off valves fitted on or nearby engine room bulkheads
- Confirm all valves in the fuel oil system shall be controllable from positions above the floor plates.
DET NORSKE VERITAS AS
Rules for Ships
Pt.4 Ch.8 Sec.8
A400
Thermal Oil Systems Rules for Ships
Pt.4 Ch.7 Sec.3
B100 / B200 /
B300 / B600 /
B700
— Confirm function of mechanical ventilation, automatic fire detecting and an approved fixed fire-extinguishing system, operated from
an easily accessible place outside the room.
— Confirm location and proper function of remote stop of ventilation, oil-burner and oil-booster pumps outside the room. Ventilating
ducts shall be possible to close by means of flaps.
— Confirm proper automatic function of minimum circulation through the heater in case consumers are shut-off.
— Confirm local and remote manual operation, from an easily accessible location outside the heater room, of stop-valves fitted to oil
fired heater main inlet and main outlet pipes for thermal-oil.
— Confirm local start, stop and remote manual stop, from an easily accessible location outside the heater room, of circulation pumps
and heater burners.
— For exhaust fired thermal oil heaters, confirm function of temperature control and bypass arrangements and fire extinguishing
arrangements as fitted.
— Confirm that the circulating pumps remain in operation at least for 10 minutes after stop of burners.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 38
DNV-OS-D201
Ch.2 Sec.2 [8.5]
— Oil Filters
- Confirm duplex filter arrangement such that it prevents unintended opening of a filter under pressure.
— Remote Stop of Fuel Oil Pumps and Fans
— Confirm function of remote emergency stop of the power supply to the following pumps and fans from a central place outside the
engine and boiler room:
- Fuel oil transfer pumps
- Fuel oil booster pumps
- Nozzles cooling pumps when fuel oil is used as coolant
- Fuel oil purifiers
- Pumps for oil-burning installations
- Fans for forced draught to boilers
- Fans for ventilation of engine and boiler rooms
- Thermal oil circulation pumps
- Hydraulic oil pumps.
— Fuel Oil Pre-Heaters
— Confirm proper function of oil temperature control (Max 50ºC) and related manual interlock for over temperature.
System / Equipment
Description
Thermal Oil Systems
(Continued)
HVAC System
Rules for Ships
Pt.4 Ch.7 Sec.8
D600
DNV-OS-D101
Ch.2 Sec.4 [6.2]
DNV-OS-D101
Ch.2 Sec.4 [10.2]
DNV-OS-D201
Ch.2 Sec.2 [8.2]
DNV-OS-D101
Ch.2 Sec.4 [11.3]
DNV Surveillance Focus (Continued)
— Confirm proper automatic control of thermal-oil outlet temperature to be able to keep the oil temperature within the limits for safe
operation under all load conditions.
— Confirm alarm and automatic shutdown of burner for the following:
- Thermal Oil: Temperature Outlet High, Flow Low and Pressure Low
- Flue Gas: Temperature High
- Expansion Tank: Level Low, Temperature High (alarm only)
- Forced Draft: Fan Stopped
- Heavy Fuel Oil: Temperature or Viscosity High / Low (alarm only)
- Flame: Flame Ignition and / or Flame Failure.
— After onboard installation, confirm that the system is functionally and capacity tested according to an approved test program. The test
procedure shall include flow measurements for each coil, covering the whole range of heater loads. The heater system charge shall
be a thermal-oil, which will allow maximum heater rating to be tested.
— Confirm the preheating arrangement maintains the temperature above 80ºC when boilers are operated at maximum load during
normal service.
— Confirm starting systems for internal combustion engines and gas turbines shall have capacity for a number of starts specified below
without reloading of air receivers:
- Engines for driving electric generators and engines for other purposes – three (3) starts each, total capacity need not exceed six (6)
starts
- Engines for driving emergency generators – six (6) starts, automatic attempts shall be limited to three (3) starts
— Confirm if a starting system serves two or more of the above specified purposes, the capacity of the system shall be the sum of the
capacity requirements.
— Confirm for multi-engine propulsion plants, the capacity of the starting air receivers shall be sufficient for three (3) starts per engine.
However, the total capacity shall not be less than twelve (12) starts and need not exceed eighteen (18) starts.
— Confirm compressors are installed with total capacity sufficient for charging air receivers of capacities specified in 201 and 202 from
atmospheric to full pressure in the course of one (1) hour.
— Confirm that failed automatic starting attempts are limited to restrict consumption of starting energy.
— Confirm for machinery spaces that the capacity of the ventilation plant is such as to provide comfortable working condition in the
engine room, to supply the necessary combustion air to the diesel engines, boilers, and to prevent heat-sensitive apparatus from
overheating.
- Confirm that air is distributed to all parts of the engine room, so that pockets of stagnant hot air are avoided. Special considerations
should be given to areas with large heat emission and to all normal working areas, where reasonably fresh and clean outdoor air
should be provided through adjustable inlet devices.
- Confirm for units with unrestricted location, the temperature rise from air intake to air passing from the engine room up to the
casing should be maximum 10ºC for an outside air temperature of maximum +35ºC.
— Confirm that the air exhaust fans maintain a slight positive pressure in the engine room, which does not exceed 50 Pa.
— Confirm that hazardous enclosed spaces receives twelve (12) air changes per hour and non-hazardous enclosed spaces receives six
(6) air changes per hour.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 39
DET NORSKE VERITAS AS
Feed Water and
Condensation
System
Pneumatic Starting
Arrangements
DNV OS /
Rule Reference
Rules for Ships
Pt.4 Ch.7 Sec.7
E100 / E200
System / Equipment
Description
Use of Gas and
Crude Oil for
Auxiliary Boilers and
Turbines
General Marine
Equipment
DNV-OS-D101
Ch.2 Sec.5 [3.11]
DNV-OS-D101
Ch.2 Sec.5 [3.12]
DNV-OS-D101
Ch.2 Sec.5 [3.14]
— Automatic shutdown is arranged to prevent overspeeding in the event of ingestion of flammable gas.
— Confirm that the following control and monitoring arrangements are present:
- Remote indication and alarm if a brake is not released when power applied to the motors. The brake alarm shall be given by an
independent mechanical sensor
- Remote indication and alarm for overheating of an electric motor
- A permanent remote indication of loads during jacking and retrieval is provided. For a lattice leg unit, the load per chord is as a
minimum to be presented. Confirm that an alarm signal is given when the maximum load is exceeded.
— Confirm that a spin test and contact pattern test is carried out according to accepted methods.
— Confirm that jacking machinery is tested with the highest specified lifting and descending load. The duration shall reflect one operating
cycle.
— Confirm that the interlock is tested.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 40
DET NORSKE VERITAS AS
Jacking Gear
Machinery
DNV OS /
DNV Surveillance Focus (Continued)
Rule Reference
DNV-OS-D101
— Confirm the following fault conditions shall release alarm and automatic shutdown of gas and crude oil supply:
Ch.2 Sec.4 [12.3.11]
- Detected gas of maximum 20% of the lower explosive limit (LEL) in the ventilated duct. For crude oil fired units, detection of
liquid at all low points in the ventilated duct may be accepted as an alternative
- Detected gas of maximum 20% of the LEL in engine and boiler room. This requirement may be dispensed with if the ducting has
no opening (e.g. hood) into the machinery space
- Loss of ventilation in the duct
- Abnormal pressure variation in the fuel supply line
- Detected fire in the engine and boiler room.
DNV-OS-D101
— Confirm that a space is pressurized to make it non-hazardous, and is provided the following minimum requirements:
Ch.2 Sec.5 [2.2]
- Pressurization air is taken from a safe area
- An alarm system is fitted to indicate loss of air pressure
- An air-lock system with self-closing doors are fitted
- An exhaust outlet is located in a non-hazardous area
- A combustion air inlet is located in a non-hazardous area.
System / Equipment DNV OS /
Description
Rule Reference
Thrusters
DNV-OS-D101
Ch.2 Sec.5 [5.1]
Rules for Ships
Pt.4 Ch.14 I100
Windlasses,
Winches and Chain
stoppers for
Temporary or
Limited Use
DNV-OS-D101
Ch.2 Sec.5 [6.3]
— Shipboard testing
— After installation on board the vessel, and prior to seatrial, the steering gear shall be subjected to the required hydrostatic and running
tests. The test shall as a minimum comprise of:
- Hydrostatic testing;
- Parts of steering gear that has not been pressure tested at workshop shall be tested at 1.5 times design pressure
- Assembly shall be tested at a minimum 1.5 times maximum working pressure
- Function testing of the steering gear
- Testing alarms and indicators
- Autostart test of power units
- Testing all start and stop functions
- Test control transfer between bridge and local control
- Test safety valve setting (if not performed during in Workshop)
- Testing function and setting of overcurrent protection
- Test and check functions and settings in frequency converter (if applicable)
- Check mechanical rudder indicator.
— On double rudder installations where two units are synchronized by mechanical means, confirm that mutual adjustment is tested.
— Confirm that alarms are provided for the following faults:
- Stop of prime mover
- Power failure of remote control system
- Power failure of alarm system
- Low level in lubrication oil tank (if provided)
- Low level in hydraulic supply tank
- Low pressure in hydraulic system
- High level in bilge well.
— The following additional alarms shall be provided and tested for propulsion thruster azimuth gear power units:
- Power failure
- Phase failure
- Motor overload
- High lubrication oil inlet temperature.
— Confirm that a riser disconnect system is fitted, such that it is not possible to release the anchor lines while risers are connected to the
unit. Confirm that a special safety system preventing this is provided.
— Confirm that it is possible to carry out a controlled lowering of the wire rope / chain in case of an emergency.
— Confirm that it is possible to release the brakes or stoppers from a protected area close to the winch itself, and from a manned control
room or bridge. During the emergency release, it shall be possible to apply the brakes once in order to halt the lowering and therefore
releasing them again.
— Confirm that an audible alarm system exists to warn that remote operation of the windlasses or winches shall take place.
— Confirm that winches are fitted with a load indicator, emergency stop system and an audible alarm system in case of overload.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 41
DET NORSKE VERITAS AS
DNV-OS-D101
Ch.2 Sec.5 [5.9]
DNV Surveillance Focus (Continued)
F.4 Electrical installations
System / Equipment
Description
Main Electric Power
Supply System
DNV OS /
Rule Reference
DNV-OS-D201
Ch.2 Sec.2 [2.1]
DNV-OS-D201
Ch.2 Sec.2 [2.2]
DNV-OS-D201
Ch.2 Sec.2 [8.2]
Switchgear and
Control Assemblies
DNV-OS-D201
Ch.2 Sec.4
[4.1]
— Confirm the main power supply system has the capacity to supply power to all services necessary for maintaining the ship in normal
operation without recourse to the emergency source of power.
— Confirm that electrical supply to equipment necessary for station keeping, propulsion and steering, and to ensure safety of the offshore
unit, will be maintained or immediately restored in case of loss of any one of the generators in service, including:
- Confirmation that starting and connection to the main switchboard of the standby generator occurs preferably within 30 seconds,
but not more than 45 seconds after loss of power.
— Confirm system for start, stop and load sharing between generators, if controlled by an automation system. The following alarms shall
be confirmed:
- Power failure to the control system
- Starting failure of prime mover
- High and low frequency
- High and low voltage
- Excessive percentage difference in loads (kVA or alternatively both kW and kVAr) taken by the generators, with the necessary time
delay, when in symmetrical load sharing mode.
— Confirm simultaneous connection of generators on to the same bus is not possible.
— Confirm restoration of power in case of loss of any one of the generators in service.
— Confirm all generator sets are arranged with systems for starting during blackout.
— Confirm that propulsion engines are tested for four (4) hours at 100% power.
— Confirm that engines for auxiliary purposes are tested at 100% power for duration sufficient for conducting all related inspections or
measurements, however, not less than one (1) hour.
- Confirm insulation of hot surfaces during maximum load by measuring surface temperature.
— Confirm that the following tests are performed on switchgear and controlgear assemblies (may be submitted by the manufacturer):
- Function test: all basic functions including auxiliary functions
- Insulation resistance test
- High voltage test.
— Confirm that all circuits are verified installed as shown in the as-built documentation. Control and protection shall be tested for correct
functioning.
— Confirm that switchgear or control gear assemblies are subject to complete function tests after installation onboard.
— Confirm that switchgear and assemblies with rated voltage above 60 V is subject to a voltage test between the circuits and between
live parts and the enclosure. The test voltage shall be minimum equal to twice the rated voltage plus 1000 V with a minimum of 1500
V. The test voltage shall be applied for 1 minute at any frequency between 25 and 100 Hz.
— For switchgear assemblies with rated voltage below 60V, confirm that the test voltage shall be a minimum of 500 V.
— Confirm that the insulation resistance test is completed prior to and on completion of the voltage test. Confirm that the testing does
not cause any reduction in the switchgear insulation level. The insulation level shall be at least 1 MOhm.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 42
DET NORSKE VERITAS AS
Rules for Ships
Pt.4 Ch.3 Sec.1
I300
DNV Surveillance Focus
System / Equipment
Description
Emergency Power
Supply System
DNV OS /
Rule Reference
DNV-OS-D201
Ch.2 Sec.2 [3.1]
DNV-OS-D201
Ch.2 Sec.2 [3.3]
Battery Systems
Rules for Ships
Pt.4 Ch.3 Sec.1
I400
DNV-OS-D201
Ch.2 Sec.2 [4.1]
Engines with Electric DNV-OS-D201
Starter
Ch.2 Sec.2 [5.1.1]
— Confirm the emergency source of power to be automatically connected to the emergency switchboard in case of failure of the main
source of electric power. If the power source is a generator, confirm that it is automatically started within 45 seconds and supplies at
least the services required by transitional power.
— Confirm the electrical power available to be sufficient to supply all services essential for safety in an emergency. Hence, the
emergency switchboard and emergency distribution boards are not to be considered as part of the main distribution system, even
though supplied from such during normal operation.
— Confirm that in normal operation, the emergency switchboard is supplied from the main switchboard by an interconnecting feeder,
which shall be protected against overload and short circuit at the main switchboard, and shall be disconnected automatically at the
emergency switchboard upon failure of the supply from the main source of electrical power.
— Confirm provision for the periodic testing of the complete emergency system and the testing of automatic starting arrangements.
— Confirm that emergency generating sets are equipped with a starting device with a stored energy capability of at least three (3)
consecutive starts. Confirm that a second source of energy is provided for an additional three (3) starts within 30 minutes, unless
manual starting can be demonstrated to be effective within this time. One starting motor is sufficient.
— The duration of each start shall be minimum 10 seconds.
— Confirm governor conditions for emergency generator sets when their total consumer load is applied suddenly, or;
— The total consumer load is applied in steps, subject to:
- The total load is to be supplied within 45 seconds since power failure on main switchboard
- The maximum step load is declared and demonstrated
- The power distribution system is designed such that the declared maximum step loading is not exceeded
- The compliance of time delays and loading sequence with the above are demonstrated at ship’s trails.
— Engines for auxiliary purposes to be tested at 100% power for a duration sufficient for conducting all related inspections or
measurements, however not less than one (1) hour.
— Confirm sufficient insulation of hot surfaces during maximum load by measuring surface temperature.
— Confirm that each charging device has sufficient rating for recharging to at least 80% capacity within 10 hours while system has
normal load.
— Confirm that an alarm is given at a manned control station if the charging of a battery fails.
— Confirm that an alarm shall be given if the battery is discharged.
- A single common alarm signal to a central alarm system may be accepted for the two (2) alarms listed here;
- If other alarms are included in the common alarm signal, it must be ensured that an active alarm will not prevent initiation of any
new alarm with its audible and visual indication.
— Confirm that each battery has sufficient capacity for at least the following start attempts of the engines being normally supplied:
- Twelve (12) starts for each reversible engine;
- Six (6) starts for each non-reversible engine connected to a reversible propeller or other devices enabling the engine to be started
with no opposing torque.
- The duration of each starting shall be a minimum of 10 seconds.
— For multi-engine propulsion plants, it shall be confirmed the capacity of the starting batteries is sufficient for three (3) starts per engine,
total capacity shall not be less than 12 starts and need not exceed 18 starts.
— For auxiliary engines, it shall be confirmed that each starting battery has sufficient capacity for at least three (3) start attempts of each
of the engines being normally supplied. The duration of each starting shall be taken as a minimum of ten (10) seconds.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 43
DET NORSKE VERITAS AS
Rules for Ships
Pt.4 Ch.2 Sec.4
A100
DNV Surveillance Focus (Continued)
System / Equipment
Description
Rotating Machinery General
DET NORSKE VERITAS AS
— The type test (TT) and routine tests (RT) that are required for motors include:
- Air gap measured or verified; visual inspection, verification of data on name plate; verification of degree of enclosure protection;
vibration or balance of the machine including operation of the bearing or lubrication system during running tests; overspeed tests
(20% in excess of rated r.p.m. for 2 minutes); withstand voltage test (1 minute); windings resistance to be measured; temperaturerise test at full load; measurement of insulation resistance; no load current at rated voltage and frequency; overload or overcurrent
test.
DNV-OS-D201
Ch.2 Sec.10 [4.4]
— Confirm that all machines are tested onboard, after installation, so that acceptable starting and running performance is verified with
full capacity of driven equipment.
— All machines shall be tested at site, after installation, so that acceptable starting and running performance are verified with full capacity
of driven equipment, alternatively full generator load.
— Confirm electrical characteristics and control of all generating sets together with their switchboard equipment (switchgear or
protection and cabling) during full load test.
— Confirm engine room ventilation / airflow during full load test of all generating sets.
— Confirm voltage regulation, speed governing and load sharing for of all generating sets.
— Confirm overload protection, reverse power protection, overcurrent and short circuit, other protection like earth fault, differential,
undervoltage, overvoltage (if applicable) for all generating sets.
— Confirm synchronizing systems for all generating sets.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 44
DNV OS /
DNV Surveillance Focus (Continued)
Rule Reference
DNV-OS-D101
— Confirm that machinery can be brought into operation from the «dead ship» condition within 30 minutes using only the facilities
Ch.2 Sec.1 [2.3.13]
installed onboard.
DNV-OS-D201
— Confirm that electrical machines are tested at the manufacturer’s works with the tests carried out on a prototype of a machine or the
Ch.2 Sec.5 [3.1]
first of a batch of machines. Confirm that routine tests are carried out on each machine.
— The type tests (TT) and routine tests (RT) that are required for generators include:
- Air gap measured or verified; visual inspection, verification of data on name plate; verification of degree of enclosure protection;
vibration or balance of the machine including operation of the bearing or lubrication system during running tests; overspeed tests
(20% in excess of rated r.p.m. for two (2) minutes); withstand voltage test (1 minute); windings resistance to be measured;
temperature-rise test at full load; measurement of insulation resistance; overload or overcurrent test; measuring of voltage
regulation during steady and transient loading and unloading (AC generator); measuring of open circuit voltage characteristics (AC
generator); measuring of short circuit characteristics (AC generator); measuring of excitation current at rated voltage, current and
power factor (AC synchronous motor or generator); measuring of steady short circuit condition (AC synchronous generator); a
steep fronted impulse test (for high voltage machines).
System / Equipment
Description
Rotating Machinery Load Steps
DNV OS /
Rule Reference
Rules for Ships
Pt.4 Ch.2 Sec.4
A100
DET NORSKE VERITAS AS
Power Transformers DNV-OS-D201
Ch.2 Sec.6 [2.1]
— Confirm transient frequency variations in the electrical network to be less than 10% of the rated frequency with a recovery time to
steady state conditions not exceeding five (5) seconds, when the maximum electrical step load is switched on or off.
— Confirm application of electrical load to be possible with three load steps and shall be such that prime movers - running at no load can suddenly be loaded to 1/3 of the rated power of the generator followed by the next 1/3 after an interval sufficient to restore the
speed to a steady state condition.
— Finally, the sudden load step from 2/3 to full load applies. Additionally, the prime mover shall be able to take a sudden application of
not less than 1/3 of full load when running at any part load below 2/3 of full power. Steady state conditions shall be achieved in not
more than five (5) seconds.
— Confirm parallel running of generating sets (active load, kW) in the range of 20% to 100% of total load. The load on any generating
set shall not normally differ from its proportionate share of the total load by more than 15% of the rated power of the largest machine
or 25% of the rated power of the individual machine in question, whichever is the less.
— Confirm parallel running of generating sets (reactive load, kVAr) in the range 20 to 100% of the rated reactive load of each generator.
The actual reactive load (mean value, if oscillations occur) shall not differ from its proportionate share of the total reactive load by
more than 10% of the rated reactive load of the largest generator in parallel, or not more than 25% of the smallest generator's rated
reactive load, if this is less than the former.
— Confirm that transformers are tested at the manufacturer’s works with routine tests (RT) being carried out on each transformer, and
type tests (TT) carried out on a prototype or the first batch of identical transformers.
— The following routine tests (RT) are to be carried out:
- Inspection of enclosure, terminations, instrumentation or protection; measuring of insulation resistance; measuring of voltage ratio
at no load and check of phase displacement; measuring of winding resistance; short circuit impedance and load losses; measuring
of no-load loss and current; separate-source AC withstand voltage test; inducted AC withstand voltage test; partial discharge
measurement on transformer windings above Um ≥ 3.6 kV, maximum level of partial discharge shall be 10 pC.
— The following type test (TT) is to be carried out:
- Temperature rise test,
— Confirm that the separate-source AC withstand voltage test involves:
- A high voltage test is applied to a new and completed transformer
- The test is carried out immediately after the temperature rise test
- The test is applied between each winding and the other windings, frame and enclosure all connected together. The full test voltage
shall be maintained for one (1) minute
- Single phase transformers for use in a polyphase group shall be tested in accordance with requirements for the transformers as
connected together in the system
- After rewinding or other extensive repair, the transformer shall be subjected to a high voltage test with a test voltage of at least 75%
of that minimum test voltage.
— Confirm that insulation resistance test is carried out and involves measuring the insulation resistance of a new, clean, dry transformer,
after the temperature rise test and high voltage test have been carried out. The test shall be carried out between:
- All current carrying parts, connected together, and earth
- All current carrying parts of different polarity or phase, where both ends of each polarity or phase are individually accessible.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 45
DNV-OS-D201
Ch.2 Sec.5 [2.4]
DNV Surveillance Focus (Continued)
System / Equipment
Description
Semi-Conductor
Converters
DNV OS /
Rule Reference
DNV-OS-D201
Ch.2 Sec.7 [1.2.1]
DNV-OS-D201
Ch.2 Sec.7 [1.2]
DET NORSKE VERITAS AS
Control Power
DNV-OS-D201
Ch.2 Sec.10 [4.4]
DNV-OS-D201
Ch.2 Sec.2 [8.1]
Electrical
DNV-OS-D201
Distribution Systems Ch.2 Sec.2 [7.1]
DNV-OS-D201
Ch.2 Sec.2 [7.2]
DNV-OS-D201
Ch.2 Sec.2 [7.3]
— Confirm that the converter has a capacity of at least 100% continuous load, and specified overload capacity given by a current of
maximum duration of time.
— Confirm for motor drives (including soft starters), shall as a minimum withstand two consecutive start attempts immediately followed
after stopping, or starting up from cold without being overheated.
— Confirm that capacitors within a converter shall be discharged to less than 60 Volt in less than five (5) seconds (or a residual charge
of less than 50 mC) after removal of power. If this requirement is not achievable, warning signboards shall be fitted.
— Confirm that alarm is given for power supply failure and trip of unit.
— Confirm that for power supply units with batteries included, the following alarms shall be provided: when the discharging battery fails,
alternatively if the battery is being discharged; when the automatic bypass is in operation for on-line units; operation of battery
protective device.
— Confirm that converters have the possibility for monitoring the output voltage, frequency and current.
— Confirm that restarting the converter in a normal manner after a blackout is possible. Manual resetting / restarting of the unit shall not
be necessary.
— Confirm that converters are routine tested (RT) at the manufacturer’s works and are carried out on each converter. These tests should include:
- Visual inspection; function test (UPS switch test); insulation tests (high voltage tests); insulation resistance test; control and
monitoring system; cooling failure tests; pressure test of coolant piping/hoses.
— Confirm that converters are type tested (TT) at the manufacturer’s works and are carried out on a prototype of a converter or the first
batch of identical converters. These tests should include:
- Visual inspection; function test (UPS switch test); input voltage and frequency tolerance test; stored energy and restored energy
tests; insulation tests (high voltage tests); insulation resistance test; rated current test/full load test; temperature rise test; control and
monitoring system; short circuit test; cooling failure tests; capacitor discharge; pressure test of coolant piping/hoses.
— Confirm that functional tests of semi-conductor converters for motor drivers are performed with all relevant ship systems
simultaneously in operation, and in all characteristic load conditions.
— Confirm that upon failure of the power supply to essential and important functions, an alarm is initiated. In case of duplicated supplies,
both shall be monitored.
— Confirm battery or uninterruptible power supply is provided as stand-by power supply for systems that are required to operate during
black-out, restore normal conditions or if specific requirements specify the need.
— Confirm that each insulated, or high resistance earthed primary or secondary distribution system has a device or devices to
continuously monitor the values of electrical insulation to earth and to give an audible or visual indication in case of abnormally low
insulation values.
— Confirm that on high voltage systems, automatic disconnection is arranged for operation at 1/3 or less of the minimum earth fault
current. On low-resistance earthed neutral systems, the disconnection is arranged for less than 20% of the minimum earth fault current.
— Confirm loss of protective functions to either trip the corresponding equipment or give an alarm on a manned control position.
— Confirm interlocks when a switchboard has two incoming feeders in order to prevent simultaneously closing of both feeders when the
parallel-connected short circuit power exceeds the switchboards’ short circuit strength. A short time parallel feeding as a “make before
break” arrangement is accepted when arranged with automatic disconnection of one of the parallel feeders within 30 seconds.
— Confirm that generators are fitted with overcurrent protection such that the generator breaker trips at 110% to 125% of nominal current,
with a time delay of 20 to 120 seconds. Confirm that short circuit protection is installed such that the breaker trips at a maximum of 1
second delay.
— Confirm that generator circuit breakers are also equipped with undervoltage protection, such that it will trip when generator voltage
drops within the range of 70% to 35% of its rated voltage.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 46
DNV-OS-D201
Ch.2 Sec.7 [2.1]
DNV Surveillance Focus (Continued)
System / Equipment
Description
Electrical
Distribution Systems
(Continued)
DNV OS /
Rule Reference
DNV-OS-D201
Ch.2 Sec.3 [3.1]
DNV-OS-D201
Ch.2 Sec.10 [4.3]
DET NORSKE VERITAS AS
Emergency Stops
DNV-OS-D201
Ch.2 Sec.2 [8.5]
Battery / UPS System DNV-OS-D201
Ch.2 Sec.7 [1.2]
DNV-OS-D201
Ch.2 Sec.10 [2.3]
— Confirm equipment is designed to operate at any load up to the rated load, with a supply voltage containing the following harmonic
distortion:
- Total harmonic content not exceeding 8% of voltage RMS value; no single harmonic being greater than 5% of voltage RMS value.
— Confirm that all outgoing power circuits from switchboards (cables and consumers) connected during installation shall undergo
insulation resistance testing to verify its insulation level towards earth and between phases where applicable (i.e. switchboards
assembled onboard).
— The insulation resistance tests (megger tests) shall be carried out by means of a suitable instrument applying a DC voltage according to:
- Rated voltage ≤ 250 V, minimum test voltage 2 x rated voltage (V), minimum resistance 1 M-ohm
- 250 < rated voltage ≤ 1000 V, minimum test voltage 500 V, minimum resistance 1 M-ohm
- 1000 < rated voltage ≤ 7200 V, minimum test voltage 1000 V, minimum resistance (rated voltage / 1000) + 1 M-ohm
- 7200 < rated voltage ≤ 15000 V, minimum test voltage 5000 V, minimum resistance (rated voltage / 1000) + 1 M-ohm.
— Confirm that function and load tests of essential and important equipment are carried out.
— Confirm settings of protective functions of consumers.
— Confirm function of protective functions of consumers, if wired up during installation.
— Confirm satisfactory operation (by use of tests) of the distribution in normal conditions, and in any abnormal condition in which the
system is intended to operate.
— Confirm start-up and stop sequences are tested together with different operating modes and are controlled by automatic control
systems when relevant.
— Confirm interlocks, alarms and indicators.
— Confirm all control modes from all control locations.
— Confirm that at least the following pumps and fans are arranged and able to be stopped in an emergency from an easily accessible
position outside the space being served:
- Fuel oil transfer pumps
- Fuel oil feed and booster pumps
- Nozzles cooling pumps when fuel oil is used as coolant
- Fuel and lubrication oil purifiers
- Pumps for oil-burning installations
- Fans for forced draught to boilers
- All ventilation fans
- All electrical driven lubrication oil pumps
- Thermal oil circulating pumps
- Hydraulic oil pumps in machinery space.
— Confirm monitoring with alarm for UPS is provided for power supply failure, trip of unit and earth fault (except dedicated system for
single consumers).
— Confirm for power supply units with batteries included, that additional alarms are provided for when the battery is being discharged, when
the bypass is in operation for on-line units and operation of battery protective device is active. Confirm that alarms are given to main alarm
system.
— Confirm that the following tests and inspections are performed before batteries are put into service:
- Ventilation shall be verified, including natural ventilation;
- Capacity tests, voltage measurements;
- Alarms and monitoring functions.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 47
DNV-OS-D201
Ch.2 Sec.10 [4.4]
DNV Surveillance Focus (Continued)
System / Equipment
Description
Battery / UPS System
(Continued)
DNV OS /
Rule Reference
DNV-OS-D201
Ch.2 Sec.10 [4.4]
Lighting
DNV-OS-D201
Ch.2 Sec.2 [6.2]
DNV-OS-D201
Ch.2 Sec.2 [10.6]
DNV-OS-D201
Ch.2 Sec.10 [4.3]
— Confirm positive function test result for dip free voltage when feeding power is being switched off (black out simulation) for UPS
systems and regular D.C. battery backed up power supply (transitional, emergency or clean power) systems serving essential or
important functions.
— Confirm correct capacity of battery backed up power supply system by running on expected load (in battery feeding mode) for a period
determined by the requirements for the actual system and by the relevant rules (30 minutes unless specified by other Rule requirement).
— Confirm that alarms are verified for their correct function.
— Confirm functional test result of semi-conductor converters for power supply with intended loading onboard.
— Confirm functional tests of semi-conductor converters for motor drives with all relevant ship systems simultaneously in operation, and
in all characteristic load conditions.
— Confirm main electric lighting system to provide illumination throughout those parts of the ship normally accessible to, and used by,
passengers or crew, and shall be supplied from the main source of electrical power. These areas include:
- Every muster and embarkation station, survival craft and their launching appliances, and area of water which they are launched;
- All service and accommodation alleyways, stairways and exits, personnel lift cars and lift trunks
- All machinery spaces and main generating stations including their control positions
- All control stations, machinery control rooms, locations where operation of safety equipment may be necessary to bring the
installation to a safe stage, steering gear and at each main and emergency switchboard
- All spaces from which control of drilling process is performed and where controls of machinery essential for the performance of
this process, or devices for the emergency switching-off of the power plant are located
- All stowage positions for firemen’s outfits
- At the fire pump and its starting position
- At the sprinkler pump and its starting position
- At the emergency bilge pump and its starting position
- Floodlight and perimeter lights on helicopter landing decks
- In all cargo pump rooms.
— Confirm that upon loss of main source of power, all required emergency lighting to is automatically supplied from the emergency source
of power.
— Confirm the navigation light switchboard (controller) to be supplied by two alternative circuits, one from the main source of power
and one from the emergency source of power. A changeover switch shall be arranged for the two supply circuits. Confirm that upon
failure of either power supply, an alarm is given.
— Confirm that single cables, after installation, do not carry more than its capacity.
— Confirm that this is demonstrated at full load of the consumer.
— After installation, with termination kit applied, high voltage cables shall be subject to one of the following alternative high voltage
tests, with the voltage applied between the conductors and the screen:
a) When a D.C. voltage withstand test is carried out, the voltage shall be not less than:
- 1.6 · (2.5 · U0 + 2) kV for cables with U0 not exceeding 3.6 kV
- 4.2 · U0 kV for cables with U0 in excess of 3.6 kV
The test voltage shall be maintained for a minimum of 15 minutes;
b) A power frequency test at the normal operating voltage of the system, applied for 24 hours.
c) A power frequency test with the phase-to-phase voltage of the system applied between the conductor and the metallic screen or
earth for five (5) minutes.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 48
DET NORSKE VERITAS AS
Parallel Connected
Cables
High Voltage Cable
after Installation
DNV Surveillance Focus (Continued)
System / Equipment
Description
Cooling and AntiCondensation
DNV OS /
Rule Reference
DNV-OS-D201
Ch.2 Sec.3 [4.2]
Electric Propulsion
DNV-OS-D201
Ch.2 Sec.12
[1.3 and 1.4]
— Where electrical equipment depends on additional cooling, the following shall be confirmed:
- Alarm is initiated when auxiliary cooling or ventilation motors stop running
- Alarm is initiated based on winding temperature for windings in cooled equipment for essential services
- Alarm is initiated based on high winding temperature in the windings in the cooled equipment for important services.
- Confirm automatic operation (on standstill condition) of heating elements for all equipment equipped with air / water heat
exchangers as well as for all high voltage converters, transformers and rotating equipment (which are not located in heated and
ventilated spaces).
— Confirm the system to have sufficient overload capacity to provide the necessary torque, power, and for A.C. systems reactive power
needed during starting (seatrial), manoeuvring (sea trial) and crash stop (seatrial) conditions.
- During crash-stop manoeuvres, it will be accepted that voltage and frequency variations exceed normal limits, if other equipment
operating on the same net is not unduly affected.
— Confirm upon detection of abnormal conditions in the generators’ excitation systems, an alarm is given on the navigating bridge and
in the engine control room and automatic actions to bring the system into a safe operational mode are executed.
— Confirm that a failure of the remote propulsion control system does not cause appreciable change of the thrust level or direction and
not prohibit local control.
— Confirm thrust limitation of the normal propulsion remote control system when there is not adequate available power.
— Confirm electric power generation and distribution system to be equipped with an automatic control system having at least the
following functions:
- Ensure adequate power for safe manoeuvring is available at all times
- Ensure even load sharing between on-line generators
- Execute load tripping and / or load reduction when the power plant is overloaded
- Ensure that adequate power for safe manoeuvring is available also if one running generator is tripped. If necessary by tripping of
non-essential consumers
- No changes in available power shall occur if the automatic control system fails, that is no start or stop of generators shall occur as
an effect of a failure
- Control the maximum propulsion motor output.
— Confirm that the control system initiates an alarm to the operator when adequate power is no longer available.
— Confirm that critical alarms are relayed to navigation bridge and displayed with separate warnings separated from group alarms.
— Confirm that monitoring alarms are arranged for:
- High temperature of cooling medium of machines and semi-conductor converters having forced cooling
- High winding temperature of all propulsion generators and motors
- Loss of flow of primary and secondary coolants of machines and semi-conductor converters having closed cooling method with a
heat exchanger, when this flow is not caused by the propulsion motor itself. Auxiliary contacts from motor starters may be used for
this purpose
- Lubricating oil pressure for machines with forced oil lubrication
- Leakage of water-air heat exchanger for cooling of machines and semi-conductor converters
- Earth fault for main propulsion circuits
- Earth fault for excitation circuits (This may be omitted in circuits of brushless excitation systems and for machines rated less than
500 kW)
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 49
DET NORSKE VERITAS AS
DNV-OS-D201
Ch.2 Sec.12 [1.5]
DNV-OS-D201
Ch.2 Sec.12 [1.6]
DNV Surveillance Focus (Continued)
System / Equipment
Description
Electric Propulsion
(Continued)
DNV OS /
Rule Reference
DNV-OS-D201
Ch.2 Sec.12
[1.6]
(Continued)
— Fuses for filter units or for other components where fuse failures are not evident.
— Confirm that a temperature indicator for directly reading the temperature of the stator windings of generators and propulsion motors
is located in the control room.
— Confirm that the following values are displayed in the control room or on the applicable converter:
- Stator current in each motor
- Field current in each motor (if applicable).
DET NORSKE VERITAS AS
— Confirm the following values are displayed in the control room for each generator: A power factor meter or kVAr meter.
— Confirm that instruments are provided for indication of consumed power and power available for propulsion on the bridge and in the
control room.
— Confirm at each propulsion control stand, indications, based on feedback signals, are provided for pitch or direction of rotation, speed,
and azimuth, if applicable.
— Confirm indications as listed for control stands, are arranged in the engine control room, even if no control means are provided.
— Upon completion as well as satisfactory tests of all subsystems, the electric propulsion system shall be confirmed during sea trial where
the propulsion plant shall be tested in normal and abnormal conditions.
— Confirm that start-up and stop sequences as controlled by the power management system, when relevant.
— Confirm safety functions, alarms and indicators.
— Confirm all control modes from all control locations.
— Confirm required level of redundancy by verification through tests.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 50
DNV-OS-D201
Ch.2 Sec.12 [2.1]
DNV Surveillance Focus (Continued)
F.5 Instrumentation and telecommunication systems
System / Equipment DNV OS /
Description
Rule Reference
Failure Response
DNV-OS-D202
Ch.2 Sec.1 [3.2]
DNV Surveillance Focus
— Confirm that detected failures initiate alarms in the assigned manned control station.
— Confirm that failure detection facilities at least cover the following failure types:
- Power failure
- Sensor and actuator failures.
— For computer based systems, confirm that failure detection facilities covers the following:
- Communication errors
- Computer hardware failures
- Software execution failures
- Software logical failures.
DNV-OS-D202
Ch.2 Sec.1 [5.3]
On-board Testing
DNV-OS-D202
Ch.2 Sec.1 [5.5]
DNV-OS-D202
Ch.2 Sec.2 [1.3]
— A copy of the approved test programme shall be kept on the installation, completed with final set points.
— The test program for harbour and sea trials shall be approved prior to tests by the Approval centre.
— Hydraulic automation and shutdown systems with on or off regulation shall be tested with maximum return flow to verify that return
headers are adequately sized and free of blockages that could prevent correct system performance.
— For pneumatic and hydraulic automation systems with accumulators used to ensure fail-safe operation, tests shall include verification
of accumulator charge level and capacity.
— Confirm main propulsion remote controls are independent of other command locations. Only one location shall be able to be in control
at a time. Confirm on each alternative location that it is indicated when this location is in control.
— Confirm transfer of propulsion remote control from one location to another (also applicable for mode change) does not result in
significant alteration of process equipment parameters.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 51
DET NORSKE VERITAS AS
Integration Testing
— Confirm fail-safe functionality to ensure the most probable failures result in the least critical of any possible new conditions. Special
attention shall be paid to arrangement where single fire or gas detectors are used for each detection area, as fail safe action should be
taken on instrument failure resulting in confirmed fire or gas.
— Confirm that integration tests include integration of hardware components and integration of software modules into the same
hardware. The integration tests to be performed with the actual software and hardware on board include:
- Hardware tests for failures
- System software tests for failures
- Application software tests
- Function tests of normal system operation, as well as operation outside normal operating parameters
- User interface tests.
— On-board testing shall demonstrate, verify and document full functionality of all automation and safety systems and shall include:
- During installation, the correct function of individual equipment packages, together with establishment of correct parameters for
automation and safety (time constants, set points, etc.)
- During installation and sea trials, the correct function of systems and integration of systems, including the ability of the automation
and safety systems to keep any EUC within the specified tolerances and carry out all safety/protective actions
- The correct distribution, protection and capacity of power supplies
- Back-up and emergency automation and safety functions for essential unit / installation systems. The tests should demonstrate that
the essential installation functions are operable on the available back-up means of operation (as required in the relevant application
standard), and in a situation where the normal system is disabled as far as practical.
System / Equipment
Description
On-board Testing
(Continued)
DNV OS /
Rule Reference
DNV-OS-D202
Ch.2 Sec.2 [1.4]
DNV-OS-D202
Ch.2 Sec.2 [1.5]
DET NORSKE VERITAS AS
DNV-OS-D202
Ch.2 Sec.3 [3.1]
DNV-OS-D202
Ch.2 Sec.3 [3.2]
DNV-OS-D202
Ch.2 Sec.3 [3.2]
DNV-OS-D202
Ch.2 Sec.3 [3.4]
On-board Testing
(Continued)
DNV-OS-D202
Ch.2 Sec.4 [3.7]
DNV-OS-D202
Ch.2 Sec.4 [4.1]
DNV-OS-D202
Ch.2 Sec.6 [4.1]
DNV-OS-D202
Ch.2 Sec.7 [2.1]
— Confirm equipment under control (EUC) does not start again automatically after being stopped by safety system.
— Confirm that alarms indicate abnormal conditions only. In areas where the audible signal may not be heard due to background noise,
additional visual and audible display units shall be installed.
— Confirm audible alarms are distinguishable from signals indicating normal conditions.
— Confirm visual alarms are distinguishable from other indications by use of colour and special representation.
— Confirm responsibility for alarms not to be transferred before acknowledged by the receiving location. Confirm transfer of
responsibility gives audible warning and indicates at each individual location when this location is in charge.
— Confirm that silencing the audible signal causes the signal to cease in addition to the external rotating lights. However, the visual alarm
indication on the workstation remains unchanged, normally flashing.
— Confirm that acknowledgement of the alarm causes silencing of the alarm. However, visual indication will remain in alarm state on
the workstation until the alarm condition ceases. Also, an active alarm signal will not prevent initiation of any new alarm with its
audible and visual indication.
— Confirm running software versions are uniquely identified by number, date or other appropriate means.
— Confirm software modifications are not made without also changing the version identifier.
— Confirm the record of changes to the system since the original issue and the identification information is maintained.
— Confirm it is possible to maintain emergency operation of the vessel / units main functions independent of network status.
— Confirm that the data communication link is self-checking, detects failures and initiates an alarm on dedication workstations.
— Confirm that network (traffic) performance is continuously monitored. Alarms should be generated if malfunctions or reduced /
degraded capacity occurs.
— Confirm the following items in a test related to network functionality:
- The main observations / items from the analysis
- Self- diagnostics, alarming upon different network failures
- Worst-case scenarios - network storm
- Segment segregation - autonomous operation of segments
- Individual controller node integrity - nodes working without network communication
- Consequence of single cabinet loss.
— After installation, confirm that Optical Time Domain Reflectometry (OTDR) measurements for each fibre can be used to correct and
re-evaluate the power budget calculations.
— Confirm piping and tubing to actuators and between actuators and local accumulators are hydrostatically tested to 1.5 times the system
design pressure for minimum 15 minutes.
— Drilling Unit / Production and Storage Unit
- Confirm back-up means of operation contains the most important action functions and alarm indications related to emergency
relocation (if required), gas detection, including activation of active fire protection devices;
- This will typically include release of foam systems and indication of foam system status, if applicable; gas detection status
indication (flammable and toxic); facilities for emergency relocation, if applicable; activation of BOP release sequence (normally
located in BOP control panel).
— Production and Storage Unit
- Confirm power to the relevant parts of the safety system is not be tripped by the emergency shutdown (ESD) system.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 52
DNV-OS-D202
Ch.2 Sec.3 [2.1]
DNV Surveillance Focus (Continued)
F.6 Fire protection systems
System / Equipment DNV OS /
Description
Rule Reference
Fire Divisions
DNV-OS-D301
Ch.2 Sec.1 [3.1]
DNV Surveillance Focus
— “H” class divisions are tested to the following standards:
- They are constructed to be capable of preventing the passage of gas, smoke and flames up to the end of the two-hour standard fire
test.
- Confirm that a test of a prototype division is carried out before its classified as “H” class.
— “A” class divisions are tested to the following standards:
- They prevent the passage of smoke and flame to the end of the one-hour standard fire test.
- Confirm that a test of a prototype division is carried out before its classified as “H” class.
DNV-OS-D301
Ch.2 Sec.1 [2.3]
Fire Fighting
Systems
DNV-OS-D301
Ch.2 Sec.3 [2.1]
DNV-OS-D301
Ch.2 Sec.3 [2.2]
DNV-OS-D301
Ch.2 Sec.3 [3.4]
DNV-OS-D301
Ch.2 Sec.3 [2.5]
DNV-OS-D301
Ch.2 Sec.3 [2.7]
— Confirm that each pump has the capability of delivering at least one jet simultaneously from each of any two (2) fire hydrants, hoses
and 19 mm nozzles while maintaining a minimum pressure of 0.35 N/mm2.
— Where a foam system is provided for protection of the helicopter deck, confirm the pump is capable of maintaining a pressure of 0.7
N/mm2 at the foam installation.
— Confirm release of the deluge systems to be possible both locally and remotely at the control station where the operating status of the
systems is monitored.
— Confirm that pressure drop in the sprinkler system is alarmed and automatically activates start-up of fire water pumps.
— Confirm that the fire water monitor has sufficient movement horizontally and vertically in order to permit the monitor to cover the
complete area of protection.
— Confirm the local manual override control is possible, if remotely operated monitor is installed.
— Confirm the monitor is provided with a locking device for operating in a selected position as well as capable of both jet and spray
discharge.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 53
DET NORSKE VERITAS AS
Fire Protection
— “B” class divisions are tested to the following standards:
- They prevent the passage of flame to the end of the first half hour of the standard fire test.
- Confirm that a test of a prototype division is carried out before its classified as “H” class.
— Confirm power ventilation of accommodation spaces, service spaces, control stations, machinery spaces and hazardous areas is
possible of being stopped from an easily accessible position outside the space being served. The means provided for stopping the
power ventilation serving machinery spaces or hazardous areas to be entirely separate from the means provided for stopping
ventilation of other spaces.
— Confirm that active fire protection systems and equipment can be tested without interruption of normal operation.
System / Equipment
Description
Fire and Gas
Detection
DNV OS /
Rule Reference
DNV-OS-D301
Ch.2 Sec.4
[3.5/3.7]
DNV-OS-D301
Ch.2 Sec.4 [3.6]
DET NORSKE VERITAS AS
Fire Protection – Oil DNV-OS-D301
and Gas Production Ch.2 Sec.7
and Storage Units
[3.1]
DNV-OS-D301
Ch.2 Sec.7 [4.1]
DNV-OS-D301
Ch.2 Sec.7 [5.2]
Fire Protection –
DNV-OS-D301
LNG Import and
Ch.2 Sec.8
[3.1]
Export Terminals
and Production Units
— Confirm that activation of any detector or manually operated call point will initiate a visual and audible fire signal at the control panel
and indicating units. If the signals have not received attention within two (2) minutes, confirm that an audible alarm is automatically
sounded throughout the crew accommodation and service spaces, control stations and machinery spaces of category A.
— Confirm that the function of the detection system is periodically tested to the satisfaction of the Administration by means of equipment
producing hot air at the appropriate temperature, or smoke or aerosol particles having the appropriate range of density or particle size,
or other phenomena associated with incipient fires to which the detector is designed to respond.
— Confirm that all detectors are of the type such that they can be tested for correct operation and restored to normal surveillance without
the renewal of any component.
— Periodically Unattended Machinery Space:
- Confirm that an approved fire detection system based on self-monitoring principals includes facilities for periodical testing is
installed in periodically unattended machinery spaces.
- Confirm fire detection system under varying conditions of engine operation and ventilation (activity normally performed during
sea trial – smoke tests).
— Confirm that a fixed automatic gas detection and alarm system continuously monitors all enclosed areas of the unit in which the
accumulation of flammable gas may be expected to occur.
— Confirm that gas detection system indicates both, by audible and visual alarm in the control center, the presence of an accumulation
of gas corresponding to 25% and 60% of lower explosion limit.
— Confirm that the fire pump systems are available at all times at the central control station. The firewater pumps should start
automatically upon fire detection in any area they are serving, as well as upon low pressure in the fire water ring main.
— Confirm that fire pumps are only be capable of being manually stopped at the driver. Automatic trip is only accepted for over-speed
protection.
— Confirm that fire pump systems can operate until destruction in an emergency situation. Over-speed protection shall be automatic
reset to cater for situations where new start up is called for.
— Confirm that fire detection at the fire water pump and / or its driver area do not stop the pump or inhibit the start of the fire pump driver.
— Confirm that fixed fire fighting systems, including deluge valve and fire water distribution pipework, provide effective fire water
protection within 20 seconds of the demand.
— Confirm the deluge valve system is activated by a signal from the fire and gas detection system and has a local energy source for the
valve actuator.
— Confirm that the rate of supply of foam solution shall not be less than the greatest of the following:
- 0.6 litre / minute / m2 of storage tank deck area, where crude oil tank deck area means the maximum breadth of the ship multiplied
by the total longitudinal extent of the cargo tank spaces
- 6 litre / minute / m2 of the horizontal sectional area of the single tank having the largest such area, or
- 3 litre/ minute / m2 of the area protected by the largest monitor, such area being entirely forward of the monitor, but not less than
1250 litre / minute.
— Confirm that sufficient foam concentrate can be supplied to ensure at least 20 minutes of foam generation in tankers fitted with an
inert gas installation, and 30 minutes of foam generation in tankers not fitted with an inert gas installation when using solution rates
given above, whichever is greatest.
— Confirm that the fire pump systems are available at all times at the central control station. Confirm that firewater pumps start
automatically upon fire detection in any area they are serving, as well as upon low pressure in the fire water ring main.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 54
DNV-OS-D301
Ch.2 Sec.4 [4.1]
DNV Surveillance Focus (Continued)
System / Equipment
Description
Fire Protection –
LNG Import and
Export Terminals
and Production Units
(Continued)
DNV OS /
Rule Reference
DNV-OS-D301
Ch.2 Sec.8
[4.1]
DNV-OS-D301
Ch.2 Sec.8 [7.1]
DNV-OS-D301
Ch.2 Sec.8 [8.1]
— Confirm that fixed fire fighting systems, including deluge valve and fire water distribution pipework, provide effective fire water
protection within 20 seconds of the demand.
— Confirm the deluge valve system is activated by a signal from the fire and gas detection system and has a local energy source for the
valve actuator.
— Confirm that fire detection in areas containing gas and LNG processing facilities results in an automatic shut-down of hydrocarbon
flow and ventilation for the area.
— Confirm automatic shutdown of ventilation upon detection of fire in enclosed spaces or smoke detection in ventilation air inlets.
— Confirm that fire detection in the wellhead, turret, oil production or crude oil tank areas initiates an automatic shutdown of wellhead
valves and oil production facilities.
— Confirm that gas detection results in an automatic shutdown all hydrocarbon flow.
— Confirm that a gas concentration of 25% lower explosion limit (LEL) in the air results in an automatic shutdown of all air inlets to
non-hazardous areas.
— Confirm 60% LEL gas detection in the area of wellhead, turret, production facilities and storage tanks result in the wellhead valves
and production facilities shutdown.
— Confirm that gas detection not higher than 10% LEL in product pump rooms and double hull spaces on floating installations results
in an audible and visual alarm signal which is automatically initiated in the pump-room, engine control room and navigation bridge,
to alert personnel to the potential hazard.
— For ships with inert gas systems, confirm that two instruments for measuring O2-content, two instruments for measuring hydrocarbon
content in the range of 0 to 20% hydrocarbon gas by volume and two instruments for measuring low hydrocarbon gas content 0 to
100% LEL are present. Confirm that alarms (visual and audible) on the bridge and in the cargo control room are triggered if safe levels
are exceeded.
— For ships without inert gas system, confirm that two instruments for measuring low hydrocarbon gas content 0 to 100% LEL are
provided and that alarms (visual and audible) on the bridge and in the cargo control room are triggered if safe levels are exceeded.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 55
DET NORSKE VERITAS AS
Rules for Ships
Pt.5 Ch.3 Sec.9
F and G
DNV Surveillance Focus (Continued)
F.7 Vessel operations
System / Equipment DNV OS /
Description
Rule Reference
Periodical Test
Rules for Ships
Pt.6 Ch.3 Sec.1
D200
General Operations
Rules for Ships
Pt.6 Ch.3 Sec.3
D100
Rules for Ships
Pt.6 Ch.3 Sec.5
A100
Rules for Ships
Pt.6 Ch.3 Sec.5
B100
Rules for Ships
Pt.6 Ch.3 Sec.5
B200 / B300
— Confirm that testing of field instruments shall in general include the physical sensor and the whole signal loop, correct functionality,
indication and alarming.
— Confirm that all field instruments for critical alarms are tested every six (6) months, unless more frequent testing is specified by the
manufacturer. The test intervals for all other field instruments shall not exceed 12 months.
— Confirm that the alarm system including the extension alarm system is continuously powered and in case of a loss of normal power
supply, an automatic change over to a continuously available power supply will have capacity for 30 minutes.
— Confirm that the watch responsibility transfer system initiates an audible and optical (flashing light) warning at both control positions
when watch transfer is requested, and the warning shall remain in operation until acknowledged.
— Confirm that automatic start of the standby pump is initiated by the process parameter which is being monitored (ie. Low-pressure
signal). When a pump is standby, confirm that this is clearly indicated on the operator panel.
— Confirm that a manual activated safety shutdown is not possible from the bridge for over-speed protection, crankcase explosive
conditions and short circuit in electrical propulsion plants.
— Confirm that the alarm for manual activation of shutdown is independent from the main alarm system.
— E0: Confirm and test individual alarms on the bridge for:
- Automatic shutdown of main boiler
- Automatic shutdown and / or slowdown of propulsion machinery
- Request for manual shutdown and / or slowdown of propulsion machinery
- Power failure bridge alarm system
- Failure in the remote control systems with respect to propulsion machinery, including controllable pitch propeller if arranged
- Failure in the remote control systems with respect to steering
- Low starting air pressure for reversible propulsion engines.
— Confirm that the propulsion plant is possible to reset (propulsion machinery safety system), as well as restart (from bridge) after
blackout. Automatic or manual arrangements are both acceptable.
— Confirm the number of consecutive automatic attempts, which fail to produce a start, is limited to safeguard sufficient starting air
pressure. Confirm that an alarm is provided indicating low starting air pressure set at a level that still permits starting operations of the
propulsion machinery.
— During sea trials, four (4) hours continuous operation with unattended machinery spaces shall be confirmed.
— During sea trials, testing of the remote control system for the propulsion machinery shall be confirmed. Prior to testing, the propulsion
machinery shall run for at least one (1) hour.
— All tests included in the test programme for the remote control system shall be carried out without manual assistance from the engine
room and all systems shall be in operation as normal for unattended machinery space.
— Confirm manoeuvres, start, stop and emergency stop according to approved test programme for fixed or controllable pitch propeller
arrangement during sea trial.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 56
DET NORSKE VERITAS AS
Class Notation E0 –
Monitoring Systems
Rules for Ships
Pt.6 Ch.3 Sec.2
C100
Rules for Ships
Pt.6 Ch.3 Sec.2
C400
Rules for Ships
Pt.6 Ch.3 Sec.2
D200
Rules for Ships
Pt.6 Ch.3 Sec.3
A200
Rules for Ships
Pt.6 Ch.3 Sec.3
B100
DNV Surveillance Focus
Other Installations
for Boil-off Gas
Handling
Rules for Ships
Pt.6 Ch.3 Sec.5
B600
Rules for Ships
Pt.6 Ch.3 Sec.5
C100
Rules for Ships
Pt.6 Ch.3 Sec.5
C200
Other Installations
for Boil-off Gas
Handling
(Continued)
Rules for Ships
Pt.6 Ch.3 Sec.5
C300
DNV Surveillance Focus (Continued)
— Confirm manoeuvres, start, stop and emergency stop according to approved test programme for steam turbine arrangement during sea
trial.
— During sea trials, four (4) hours continuous operation with unattended machinery spaces shall be confirmed for both gas operation
mode as well as fuel oil mode (resulting in 2 x 4 hours test).
— Manoeuvres, start, stop and emergency stop according to approved test programme should be confirmed for both gas operation mode
as well as fuel oil mode.
— For LNG carriers with steam propulsion and dual fuel boilers as well as dual fuel engines of the high pressure gas injection type: testing
required (four (4) hours continuous operation - manoeuvres, start, stop and emergency stop test) may be carried out with boilers fired
with fuel oil only.
— Confirm that automatic operation of gas combustion units (oxidizing units) is possible without manual surveillance, except that start
and stop may be manually initiated.
— Confirm that automatic operation for re-liquefaction plants for boil-off gas is possible without manual surveillance.
— Confirm that parameters are recorded for the automatic control system for auxiliary boilers tests, which include:
- Steam pressure (primary and secondary system)
- Water level in boiler
- Automatic actions such as start and/or stop of burners, alarms, etc.
— For an automatic control system for auxiliary boilers serving turbo generators, vary the boiler load as follows:
- Increase load from minimum to full load during a period of minimum 15 minutes
- Reduce load from full load to minimum during a period of minimum 15 minutes
- Increase load suddenly to minimum 50% of full load by connecting one of the greater consumers
- When stationary conditions are reached, reduce load suddenly to a minimum.
— For an automatic control system for two auxiliary boilers operating in parallel, vary the boilers’ load as follows:
- Increase load suddenly to minimum 30% of full load, by connecting one of the greater consumers.
— When stationary conditions are reached, reduce load suddenly to approximately 5% of full load and keep that load until stationary
conditions are reached.
— Confirm that parameters are recorded for the automatic control system for main boilers tests, which include:
- Steam flow (alternatively position of control valve);
- Steam pressure;
- Temperature of superheated steam;
- Water level in boiler;
- Water level in condenser and deaerator;
- Fuel oil temperature or viscosity;
- Excess of combustion air in exhaust gas.
— Confirm that the boiler load is varied in accordance with manoeuvring tests specified in B300. The boiler plant testing may be carried
out simultaneously with testing of remote control system for the main turbines.
— Confirm the flame fault detection system by closing fuel supply to burner while in operation.
— With burners in operation, confirm the automatic shutoff valve for fuel oil by shielding the flame detector.
— With boiler in operation, confirm automatic stop of the combustion air fan.
— Confirm that fuel oil supply is shut off after reducing water level below safety limit.
— Confirm remaining boiler alarms and safety actions by simulating failures as realistically as practicable.
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 57
DNV OS /
Rule Reference
Rules for Ships
Pt.6 Ch.3 Sec.5
B400
Rules for Ships
Pt.6 Ch.3 Sec.5
B500
DET NORSKE VERITAS AS
System / Equipment
Description
Class Notation E0 –
Monitoring Systems
(Continued)
Ships with Gas
Fuelled Machinery
System / Equipment DNV OS /
Description
Rule Reference
Dynamic Positioning Rules for Ships
Pt.6 Ch.7 Sec.1
E100
— Confirm power systems and thruster systems have been completed as per main class test requirement and no major pending issues
remaining before commencing any dynamic positioning (DP) test activity.
- Main class test requirements will at least include:
- Load test according to main class
- Transfer of thruster control
- Manual override of thruster control
- Emergency stop
- Communication systems
- Main alarm system as for main class and E0 (if applicable)
- Integrated automation systems (if applicable).
— Confirm dynamic positioning (DP) functional test as per approved test programme.
— Confirm DP duration test for at least eight (8) hours with the complete automatic system in operation.
— Confirm DP failure modes and effects analysis (FMEA) as per approved test programme.
DET NORSKE VERITAS AS
Recommended Practice DNV-RP-A205, October 2013
App.F DNV Requirements related to marine, utility and safety systems – Page 58
Rules for Ships
Pt.6 Ch.7 Sec.1
E600
DNV Surveillance Focus (Continued)
APPENDIX G SURVEY SCOPE FOR SPECIFIC CLASS NOTATIONS
G.1 DNV survey scope for DRILL
System /
Equipment
Description
Drilling Plant –
General
DNV Surveillance Focus
DNV-OSS-101
DNV-OS-E101
— This section includes instructions for surveys and tests in connection with installation of DRILL equipment and systems. It is mainly to be
used by the PMF and his / hers project task members at the yard.
— DRILL notation covers design fabrication, installation and operational aspects of offshore drilling facilities which have potential to effect
personnel or pollution of the environment.
— DRILL notation requires certification of drilling equipment and systems, and approval of complete drilling plant, which includes at least the
following:
- Drilling arrangement
- Piping and instrumentation
- Power supply
- Equipment interface.
Drilling
Structures –
Derrick
Drill floor and
sub-structures
DNV-OS-E101
Ch.2 Sec.5 [2.1]
DNV-OS-E101
Ch.2 Sec.5
[2.3/2.4]
— It is important to ensure that equipment installed onboard is certified in accordance with the Rules. This should be confirmed prior to testing
of complete systems.
— Testing of systems and equipment specified in the Rules is to be carried out in accordance with written test procedures accepted by the
Surveyor.
— Such test programs may contain testing that exceeds the Rule requirement; however, the Surveyor should “Note” the program and ensure
that the rule requirements are complied with, as a minimum.
— Although most equipment will normally have undergone shop testing at the manufacturer, it is important to ensure that equipment has not
been damaged under transportation and has been assembled, installed and integrated in the correct manner. Also, time between equipment
fabrication and installation onboard can be considerable.
— Functional testing of systems is to be carried out, as far as possible, under working conditions.
— SIT test to be carried out.
— In connection with installation of heavy equipment, special attention should be paid to fixation and support.
— Units with DRILL / DRILL(N) class should have equipment lists for all category I equipment. The list should include DVR and PC numbers
with name of maker and equipment.
— A copy of all the PC’s shall be filed at the local station.
— DNV-OS-E101 makes reference to other standards. In particular, A101 and Escape way, F and G/ESD needs to be addressed as it’s always
a problem on site.
— Communication / PA is not addressed.
— Confirm satisfactory fastening of derrick fixtures, special attention to fixation and support of heavy equipment.
— Check satisfactory sea-fastening arrangement.
— Lifting lugs / pad eyes, if covered by Class.
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 59
DET NORSKE VERITAS AS
DNV OS /
Rule Reference
System /
Equipment
Description
Well Control
Systems –
DNV OS /
Rule Reference
DNV Surveillance Focus (Continued)
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 60
DET NORSKE VERITAS AS
DNV-OS-E101 — Leak / pressure test to demonstrate function of rams, annular elements, valve gates and C/K connections. Testing should be carried out at
low pressure (2-300 psi) and rated working pressure.
Ch.2 Sec.5 [3.2]
(Note: For testing of the pipe rams and annulars, a suitable test tool should be used, suitably anchored to the test stump).
Blowout
DNV-OS-E101 — Complete function testing of the BOP including all preventers, connectors and fail-safe valves (using the accumulator system, not only the
Preventer Stack Ch.2 Sec.6 [3.2]
stack-mounted accumulators).
DNV-OS-E101 — Leak / pressure testing of installed hoses and piping.
Well Control
Ch.2 Sec.5 [3.2] — Operate all BOP functions from main control station and remote locations.
Systems –
Blowout Control
— Confirm satisfactory operation from either pod.
System
DNV-OS-E101 — Verify independence of the two mutually independent control systems for electrical or computer based BOP control systems.
Ch.2 Sec.6 [3.2] — Verify that the system resumes normal operation automatically when started or reset.
— Check flow rates and response times.
— Check actual volumetric capacity of accumulator unit (usable volume) and compare with required volume.
— Check alarms (visual and audible) for low accumulator pressure, low rig air pressure, low manifold pilot pressure, low fluid level, autostart
/ autostop of pumps, and loss of power supply.
— Check function in emergency shutdown situations.
— Test acoustic panel (if installed).
— Check calibration of manometers and thermometers.
— Confirm safety valves (or temperature sensitive fuse plugs) on the accumulator nitrogen charging side.
— Check calibration of pressure gauge flow meters.
— Check operation of the regulator for closing pressure in case of loss of rig air.
— Confirm pre-charge pressure of the accumulators. This can be accomplished by completely draining the units and witnessing a sudden
pressure drop when they are emptied.
— Confirm emergency power supply for remote panel operation. Normally, remote panels are powered by 24V DC batteries, which are
continuously trickle charged. Confirm that loss of charging will give alarm but allow uninterrupted operation by the batteries.
Well Control
DNV-OS-E101 — Function test dogs on fixed support housing.
Systems –
Ch.2 Sec.5 [3.3] — Leak test to confirm tightness of seals.
Diverter
— Operate all functions from main and remote panels.
— Confirm valve sequence interlock (opening of overboard valve prior to closure of annular and mud system valves).
DNV-OS-E101 — Valve seat sealing test at low pressure (approx. 200-300 psi) and rated working pressure.
Well Control
Ch.2 Sec.5 [3.4] — Confirm operation of manual and remote chokes.
Systems –
— Confirm that manifold gauges and driller’s gauges correctly calibrated.
Choke and Kill
— Function test of the Emergency Circulation Pump (normally the diesel driven cementing unit), including starting the pump and the alignment
System
/ operation of necessary valves under a (simulated) Black-Ship condition.
— Pressure testing to maximum working pressure, including all high pressure (HP) piping and flexible hoses.
— Confirm calibration of manometers and thermometers.
System /
Equipment
Description
Marine Riser
System –
Workover Riser
System
DNV OS /
Rule Reference
DNV Surveillance Focus (Continued)
DNV-OS-E101 — Riser joints:
Ch.2 Sec.5 [3.5]
- Visual inspection to confirm no damage to sealing surfaces or distortion of pipes;
- Pressure test to max working pressure (of choke, kill and booster lines).
DNV-OS-E101
Ch.2 Sec.6 [3]
— Telescopic joint:
- Visual inspection to confirm no damage to sealing surfaces or distortion of pipes;
- Pressure test to confirm sealing at gooseneck connections.
— Flex joint:
- Visual inspection to confirm no damage to sealing surfaces or distortion of pipes;
- Pressure test to confirm sealing.
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 61
DET NORSKE VERITAS AS
— Riser wellhead connector:
- Function testing of mechanisms for lock, unlock and disconnect;
- Leak / pressure testing of control hoses.
Heave
DNV-OS-E101 — Pressure testing to max working pressure of installed piping and flexible hoses.
Compensating
Ch.2 Sec.5 [4.2] — Confirm full extension of hydraulic cylinders.
System
— Confirm safety valve setting.
— Confirm operation and safety features of any dedicated compressors or auxiliary machinery.
— Confirm operation of main valve control and indicators (weight and pressure).
— Confirm operation of isolation valve control and indicators.
— Confirm alignment and spacing of crown block guide wheels.
— Confirm operation of crown position indicator.
Riser Tensioning DNV-OS-E101 — Pressure testing of installed piping and flexible hoses.
System
Ch.2 Sec.5 [4.3] — Stroking of tensioners to confirm free movement.
— At full stroke, apply full system air pressure and check for leaks.
— Confirm safety valve setting.
— Alignment and free movement of sheaves to be confirmed.
— Retractable sheaves to be load tested at full extension.
— Operation of hydraulic and pneumatic systems to be confirmed.
— Check clamping of wires to be carried out satisfactorily.
— Confirm operation and safety features of any dedicated compressors or auxiliary machinery.
— Verify proper functioning of slingshot valves.
— Perform a function test on the tripsaver trolley over the full track length.
— Perform a load test on the tripsaver trolley.
— Confirm operation of limit switches, bumper stops, and parking bolts.
System /
Equipment
Description
Hoisting
Equipment
DNV OS /
Rule Reference
DNV Surveillance Focus (Continued)
DNV-OS-E101
Ch.2 Sec.5
[5.1/5.2]
Rotating
Equipment
—
—
—
—
—
—
—
—
—
—
DNV-OS-E101
Ch.2 Sec.5
[5.1/5.3]
DNV-OS-E101 — All lifting appliances shall be tested in “as installed” condition prior to first use.
Ch.2 Sec.5 [6.1] — Load test as applicable.
— Load test of pipe handling crane. The test load shall be hoisted, slewed and luffed at slow speed through the entire operating range.
— Function testing of all safety features.
— Check operation of parking bolts, limit switches, and bumper stops.
— Confirm hoisting and traversing over full track length.
— Tests for lifting appliances where safe working load (SWL) varies with operating radius, shall generally be performed with the appropriate
test load at maximum, minimum and at an intermediate radius.
— Function test upper racking arm in all positions.
— Test operation of spears.
— Function test intermediate racking arm.
— Confirm operation of standby cylinder under load.
— Confirm operation of drill floor manipulator arm.
— Confirm operation and safety features of hydraulic power unit.
— Perform functional test of fingerboard.
DNV-OS-E101 — All lifting appliances shall be tested in “as installed” condition prior to first use.
Ch.2 Sec.5 [6.1] — Load test of main and auxiliary hoists. Check main girder for excessive deflection.
— Gantry and travelling cranes together with their trolleys, as applicable, shall be traversed and travelled over the full length of their track.
— Check hose reel operation.
— Pressure test installed high pressure (HP) piping.
— Check operation of parking bolts, limit switches, and bumper stops.
— Check calibration and sealing of load limiting valves (air pressure regulators or hydraulic PSVs).
DNV-OS-E101 — Check traversing operation.
Ch.2 Sec.5 [6.1] — Check hose reel operation.
— Check gripper function.
— Check parking bolt function.
— Check operation of hydraulic cylinders.
— Check parking bolt arrangement.
— Check unobstructed travel of frames.
BOP and Pipe
Handling
Equipment
BOP Bulkhead
Guide
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 62
DET NORSKE VERITAS AS
BOP Overhead
Crane
Confirm satisfactory fastening of derrick fixtures.
Confirm satisfactory functioning of guide dollies (especially retractable dollies).
Check calibration of deadline, load cell, etc.
Confirm correct torque of deadline clamp bolts.
Confirm operation of draw works main and auxiliary brakes.
Confirm operation of crown saver device.
Load test air winches to confirm correct installation and anchoring.
Confirm calibration and sealing of load limiting valves (air pressure regulators or hydraulic PSVs).
Confirm operation of rotary table safety features (e.g. purge).
Confirm calibration of driller’s console torque and RPM.
System /
Equipment
Description
BOP Baseplate
Trolley
DNV OS /
Rule Reference
DNV Surveillance Focus (Continued)
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 63
DET NORSKE VERITAS AS
DNV-OS-E101 — Perform load test, especially in cantilevered position.
Ch.2 Sec.5 [6.1] — Confirm travel from storage position to cantilevered position.
— Confirm operation of hose reels.
— Confirm operation of parking bolt arrangement.
BOP Carrier and DNV-OS-E101 — Function test BOP carrier or skid with BOP installed over full track length.
Skid
Ch.2 Sec.5 [6.1] — Confirm function of sea fastening equipment.
— Confirm operation of hose reels.
— Confirm operation of limit switches, bumper stops, parking bolts.
Bulk Storage,
DNV-OS-E101 — Pressure test to max working pressure (WP) of installed piping.
Mud and
Ch.2 Sec.5
— Pressure test pressure vessels to max WP.
Cementing
[7.1/7.2]
— Confirm operation and safety features of any dedicated compressors.
System –
— Confirm bulk transfer routes operate satisfactorily (may use air as medium).
— Confirm operation of remote control valves and control panels.
— Confirm safety valve setting.
Bulk Storage
— Confirm operation of instrumentation (level alarms).
— Confirm possibility to purge vent lines to prevent clogging on discharge side of the tanks safety valves / rupture discs.
Bulk Storage,
DNV-OS-E101 — Pressure testing to max working pressure (WP) of installed piping and flexible hoses.
Mud and
Ch.2 Sec.5
— Pressure test pressure vessels to max WP.
Cementing
[7.1/7.3]
— Pressure testing of standpipe manifold and mud system valves. Valve seat seal to be confirmed at low pressure (2-300 psi) and rated working
System –
pressure.
— Calibration of mud standpipe gauges and driller’s gauges to be confirmed.
— Perform pressure test of rotary hose and swivel.
Mud System
— Confirm mud pump safety valve setting.
— Confirm system for monitoring mud return flow rate.
— Function test and pressure test, both low pressure (LP, 200-300psi) and max WP, of Kelly Cocks, IBOP, and valves in drill string.
DNV-OS-E101 — If the cement unit is the emergency pump, confirm crossover to mud system.
Bulk Storage,
— Pressure test to max working pressure (WP) of installed piping and flexible hoses.
Ch.2 Sec.5
Mud and
— Pressure test cement manifold and system valves. Valve seat seal to be confirmed at low pressure (2-300 psi) and rated working pressure.
[7.1/7.4]
Cementing
— Confirm pressure safety valve settings.
System –
— Confirm calibration of manifold gauges and driller’s gauges.
— Safety functions of diesel engine to be tested (overspeed, high exhaust temperature, high cooling water temperature, and low lube oil
pressure).
Cementing
— If the cement pump is the emergency kill pump, the starting system for the diesel engine is to be reviewed to ensure that the engines can start
System
without use of the rig’s air system. Special attention is to be paid to non-return valves, if fitted between start air bottles and rig air systems.
For diesel engines located in zone 2 areas, the safety functions on the engine are to be tested. Typically, these are lube oil low pressure,
cooling water high temperature and the overspeed trips.
— Confirm insulation of the exhaust gas manifold.
System /
Equipment
Description
Well Testing and
Associated Well
Control System
DNV OS /
Rule Reference
DNV Surveillance Focus (Continued)
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 64
DET NORSKE VERITAS AS
DNV-OS-E101 — Pressure test to max working pressure (WP) of installed piping and flexible hoses.
Ch.2 Sec.5 [8.2] — Pressure test pressure vessels to max WP.
— Confirm settings of safety valves and where the discharge from the valve proceeds to (i.e. burner boom or open air).
— Confirm safety features (e.g. level controls, fire and gas detection).
— Complete a full functional testing of the associated safety systems and ESD system.
— Perform a function test of the fixed deluge system, cooling system on burner booms and rig side, and fire monitors.
— Verify drainage system in well test area.
— Confirm calibration of manifold gauges and control room gauges.
— Confirm operation and safety features of any dedicated compressors.
— The burner boom shall be tested with an overload of 25% related to the required weight of burner and spreader.
Man Riding
DNV-OS-E101 — All lifting appliances shall be tested in “as installed” condition prior to first use.
Equipment
Ch.2 Sec.5
— The test load shall be hoisted, slewed and luffed at slow speed through the entire operating range, as applicable, for the lifting appliance in
[9.1 to 9.5]
question.
— Perform static brake capacity test for all brakes operating simultaneously at 2 ´ safe working load (SWL).
— Perform static brake capacity test for each individual brake at 1.8 ´ SWL.
— Perform dynamic brake capacity test for each individual brake at 1.25 ´ SWL.
— Confirm operation of two independent locking devices.
— Confirm emergency stop function.
— Confirm that system is reset to function after an emergency stop.
— Confirm that slack wire detection is functioning.
— Confirm that load limiting devices and limit switches are functioning.
— Confirm override possibilities between local and remote controls.
— Confirm functioning of emergency hoisting system (if operating under deck or over open sea).
— Confirm emergency lowering and hoisting functionality.
— Confirm that at least three (3) turns of wire rope is remaining on the man riding winch drum at the lowest possible operating position.
Other Systems – DNV-OS-E101 — Perform load test.
Ch.2 Sec.5 [6.1] — Function test skid or carrier with overload over full track length.
— Confirm operation of limit switches, bumper stops, parking bolts.
Winches
DNV-OS-E101 — Perform load test.
Ch.2 Sec.5 [10.1] — Confirm that winches are shielded for personnel protection and marked with safe working load (SWL).
— Confirm correct function of operating handle or equivalent (e.g. push buttons).
— Confirm functionality of automatic brake.
— Confirm emergency lowering function of the lifting device.
— Confirm load limit device and pressure safety valve setting.
System /
Equipment
Description
High Pressure
Piping –
All Piping
Systems
General
Electrical
Systems and
Components
DNV Surveillance Focus (Continued)
DNV-OS-D101 — Where valves are provided at watertight boundaries to maintain watertight integrity, these valves shall be capable of being operated from a
Ch.2 Sec.2 [5.2]
control room. Valve position indicators shall be provided at the remote control station.
— For remotely controlled valves, failure in power supply (electrical, hydraulic, and pneumatic) shall not cause:
- Opening of closed valves, closing of open valves on fuel oil tanks and in cooling water system for propulsion and power generating
machinery.
— Hydrostatic testing - all valve bodies shall be subject to a hydrostatic test by the manufacturer at a pressure equal to 1.5 times the nominal
pressure (the nominal pressure is the maximum allowable working pressure at room temperature). The following regulations are required:
- The test pressure need not be more than 70 bar in excess of the nominal pressure;
- For valves fitted on unit or installation’s side and bottom, the test pressure shall not be less than five (5) bar;
- For butterfly valves fitted on unit or installation’s side and bottom, shall also be hydrostatically tested at a pressure equal to five (5) bar
applied independently on each side of the closed disc.
DNV-OS-D101 — Hydrostatic testing after assembly onboard - The piping shall be hydrostatically tested in accordance with the following:
Ch.2 Sec.6
- Fuel oil piping, heating coils in tanks, bilge, ballast and fire pipes, steam pipes, compressed air pipes and feed pipes of class III - 1.5
[6.1, 6.2 and 7.1]
maximum working pressure, minimum four (4) bar.
- Hydraulic piping - 1.5 maximum working pressure. Test pressure need not exceed working pressure by more than 70 bar.
- Piping systems made from non-metallic material - 1.5 maximum working pressure, minimum six (6) bar, minimum duration one (1) hour.
— All piping systems shall be properly flushed, checked for leakage and functionally tested under working conditions.
— Function testing of closure devices i.w.o. watertight boundaries from control room / station - positive remote confirmation of the same.
DNV-OS-E101 — Monitor the yard’s system to document the fabrication process with reference to each spool and weld joint. This recording should contain
Ch.2 Sec.3
material verification status, fit-up, edge penetration, WPS number, stress relief, hardness testing (for sour service), pressure testing, NDE and
[2.1 to 2.5]
final inspection.
— All piping including fittings, flanges, valves, etc., shall be checked for correct schedules and rating.
— Dimensions of all prefabricated pipework are to be checked against the spool drawing of latest revision.
— Confirm that flanges are square to pipework. The flange face flatness shall be checked.
— The fit-up shall be checked with particular attention to alignment, root gap, crack in tag weld, bevel configuration and cleanliness.
— Special attention should be paid to systems which may be assembled of fittings and piping with poor weldability and heavy thickness.
— The distance between two buttwelds, defined as the minimum distance between fusion lines at the surface of the welds, should not be less
than ten times the wall thickness, minimum 50 mm. In addition, the weld distance should be sufficient to avoid high preheating temperatures
(100°C) on completed welds.
— Special attention should also be paid to penetration of high pressure pipes through steel bulkheads. No welding is to be performed in high
pressure pipes.
— In areas where the temperatures are fluctuating (e.g. on deck), pipe lengths are to be given expansion possibilities. For such pipes, the
flexibility of support is important.
— Pressure testing is to be witnessed.
DNV-OS-E101 See section on Electrical Installations for requirements.
Ch.2 Sec.4 [2.1]
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 65
DET NORSKE VERITAS AS
High Pressure
Piping –
DNV OS /
Rule Reference
System /
Equipment
Description
Instrumentation,
Control and
Monitoring
Systems
DNV OS /
Rule Reference
DNV Surveillance Focus (Continued)
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 66
DET NORSKE VERITAS AS
DNV-OS-E101 — See section on Instrumentation and Telecommunication systems for requirements.
Ch.2 Sec.4 [3.1] — On-board testing shall demonstrate, verify and document full functionality of all automation and safety systems and shall include:
- During installation, the correct function of individual equipment packages, together with establishment of correct parameters for
automation and safety (time constants, set points, etc.);
- During installation and sea trials, the correct function of systems and integration of systems, including the ability of the automation and
safety systems to keep any equipment under control (EUC) within the specified tolerances and carry out all safety / protective actions;
- The correct distribution, protection and capacity of power supplies;
- Back-up and emergency automation and safety functions for essential unit/installation systems. The tests should demonstrate that the
essential installation functions are operable on the available back-up means of operation (as required in the relevant application standard),
and in a situation where the normal system is disabled as far as practical. A copy of the approved test programme shall be kept on the
installation, completed with final set points.
— The test program for harbour and sea trials shall be approved prior to tests by the Approval centre.
— Hydraulic automation and shut-down systems with on or off regulation shall be tested with maximum return flow to verify that return headers
are adequately sized and free of blockages which could prevent correct system performance.
— For pneumatic and hydraulic automation systems with accumulators used to ensure fail safe operation, tests shall include verification of
accumulator charge level and capacity.
G.2 DNV survey scope for PROD
System /
Equipment
Description
Oil and gas
Processing Plant
– General
DNV Surveillance Focus
DNV-OSS-102
DNV-OS-E201
— This section includes instructions for surveys and tests in connection with installation of process topsides (PROD) equipment and systems.
It is mainly to be used by the PMF and his / hers project team members at the yard/site.
— PROD notation covers design fabrication, installation and operational aspects of offshore production facilities which have potential to effect
the safety of personnel, the safety of the vessel or pollution of the environment.
— PROD notation requires certification of production equipment and systems, and approval of complete production plant, which includes, as
applicable, the following:
- production and export riser systems
- well control system
- riser compensating and tensioning system
- hydrocarbon processing system
- relief and flare system
- production plant safety systems
- production plant utility systems
- water injection system
- gas injection system
- storage system
- LNG Liquefaction system
- crude offloading system
- LNG regasification system
- LNG transfer system.
— It is essential that the main boundaries of the production plant are known and clear to all parties, as applicable, these may be:
- riser shutdown valve
- control system connection to sea floor system
- connection to production buoy
- shutdown valve at crude outlet from production plant to crude storage or loading buoy
- shutdown valve between liquefaction plant and LNG storage tanks
- shutdown valve between LNG storage and regasification plant, and between regasification plant and export line.
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 67
DET NORSKE VERITAS AS
DNV OS /
Rule Reference
System /
Equipment
Description
Oil and gas
Processing Plant
– General
(Continued)
DNV OS /
Rule Reference
DNV Surveillance Focus (Continued)
DNV-OSS-102
DNV-OS-E201
(Continued)
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 68
DET NORSKE VERITAS AS
— It is important to ensure that equipment installed onboard is certified in accordance with the Rules. This should be confirmed prior to testing
of complete systems.
— Testing of systems and equipment specified in the Rules is to be carried out in accordance with written test procedures accepted by the Surveyor.
— Such test programs may contain testing that exceeds the Rule requirement; however, the Surveyor should “Note” the program and ensure
that the rule requirements are complied with, as a minimum.
— Although most equipment will normally have undergone shop testing at the manufacturer, it is important to ensure that equipment has not
been damaged under transportation and has been assembled, installed and integrated in the correct manner. Since time between equipment
fabrication and installation onboard may be considerable, preservation and calibration issues may be present.
— Functional testing of systems is to be carried out, as far as possible, under working conditions.
— SIT test to be carried out.
— In connection with installation of heavy equipment, special attention should be paid to fixation and support.
— Units with PROD class should have equipment lists for all category I equipment. The list should include DVR and PC numbers with name
of maker and equipment.
— A copy of all the Product Certificate’s shall be filed at the local station.
— For European situated units, and/or where DNV act’s as the Notified Body, European Directive requirements for equipment will also apply
for the topsides only. E.g Pressure Equipment (PED) Directive (97/23/EC), Potentially Explosive Atmospheres (ATEX) Directive 94/9/EC
— DNV-OS-E201 makes reference to other standards. In particular, DNV-OS-A101 and Escape routes, F and G/ESD requirements to be addressed.
Main Production DNV-OS-E201 — Confirm satisfactory fastening of module structures and equipment to support stools and secondary structures.
Structures –
Ch.2 Sec.8 [3.1] — Lifting lugs / pad eyes, if covered by Class.
Process Modules
— Confirm required structural PFP installed as per design requirements
Control Rooms
— Rotating equipment mounts to be verified for acceptable vibration.
Other Topside
— Coatings verified to design
Packages i.e.
— Escape route arrangements to be verified. (Include lighting, surface coatings, marking etc.)
Metering
Package
Deck Boilers
Power
Generation
Etc.
Other Secondary DNV-OS-E201 — Confirm satisfactory integration and fastening arrangement.
and Tertiary
Ch.2 Sec.8 [3.1] — Escape route arrangements to be verified. (Include lighting, surface coatings, marking etc.)
structures
— Coatings verified to design
Wellhead
DNV-OS-E201 — Ensure all mechanical and accidental impact protection for the riser system is provided as per design.
Control Systems Ch.2 Sec.1 [3.5] — Confirm required PFP installed as per design requirements
–
— Leak / pressure testing of installed risers, hoses and piping. Pressure testing to maximum working pressure.
DNV-OS-E201 — Leak testing of SCSSV to be verified with code allowable limits (APR RP 14F)
Surface
Ch.2 Sec.4
— Function test SCSSSV to confirm limit switches operate and time for closure is within code requirements.
Controlled
A100
— Confirm correct valve position indication is provided
Subsea Safety
— Confirm hydraulic oil cleanliness following installation and flushing.
Valves and
— Confirm hydraulic oil return is provided with hydrocarbon contamination protection.
Risers
— If hydraulic oil is drained to sea on closure, confirm oil type is environmentally benign.
— Confirm acoustic or other initiation system (if installed)
System /
Equipment
Description
Wellhead
Control Systems
–
DNV OS /
Rule Reference
DNV Surveillance Focus (Continued)
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 69
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DNV-OS-E201 — Where emergency disconnection of flexible risers is provided, important functionality shall be tested.
Ch.2 Sec.1 [3.5] — Confirm ability to test without actual disconnection.
— Ensure all mechanical and accidental impact protection for the riser system is provided as per design.
DNV-OS-E201 — Confirm required PFP installed as per design requirements
Riser tensioning Ch.2 Sec.4 [1.3] — Disconnection to be tested from main control room and locally.
and
— Disconnection shut off valve sequence to be verified before simulated disconnection occurs.
disconnection
— Critical components and functions of riser tensioning system to be verified e.g.
Systems
— Confirm alarms (visual and audible) for riser system excursions outside permissible design limits.
Wellhead
DNV-OS-E201 — Confirm all mechanical and accidental impact protection is provided as per design.
Control Systems Ch.2 Sec.1 [3.5] — Confirm required PFP installed as per design requirements
–
— Leak / pressure test to demonstrate function wing and master valves.
DNV-OS-E201 — Complete function testing of the Surface Production Tree to ensure all piping components and instrumentation have been installed in
Surface
accordance with P&ID’s and all relevant set points are correct.
Ch.2 Sec.4 [1.1]
Production Tree
— Confirm wellhead control panel functionality.
and wellhead
— Confirm hydraulic oil type, cleanliness, levels in wellhead control panel.
control
— Confirm sequence and independence of production tree and subsea valve closure. Verify correct valves close upon initiation from the ESD
system depending on ESD level. (i.e. low level ESD may only close wing valve)
— Confirm complete isolation of wells within performance criteria.
— Confirm controlled shutdown of wellhead valves on loss or reduced supply pressure to wellhead panel.
— Confirm alarms (visual and audible) for low accumulator pressure, low rig air pressure, low manifold pilot pressure, low fluid level, autostart
/ autostop of pumps, and loss of power supply, as applicable.
Turret System
— Confirm swivel barrier protection system
and
— Turret bearing lubrication system
Swivel Stack
— Turret bearing maintenance arrangements.
— Slip ring commissioning test in accordance manufacturer requirements.
— Confirm monitoring and control arrangements.
— Configuration of the turret could have significant bearing on extent of commissioning tests therefore it is important to consider the
manufacturers test programme carefully to evaluate level of commissioning tests to verify.
— Confirm module integration piping is complete, installed as per P&IDs, correctly supported; flange management processes satisfactorily
Production
completed and leak testing of complete integrated system is completed.
Separation
— Confirm dropped object protection (or procedural controls) are in place.
System
— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with
P&ID’s and all relevant set points are correct.
— Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s.
— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.
— Confirm necessary heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.
System /
Equipment
Description
Relief,
Blowdown and
depressurising
systems
DNV Surveillance Focus (Continued)
DNV-OS-E201
Ch.2 Sec.3
— Confirm module integration piping is complete, installed as per P&IDs, correctly supported, flange management processes satisfactorily
completed and leak testing of complete integrated system is completed.
— Confirm that the blowdown valves, blowdown restriction orifice and blowdown/cold vent piping (including sizing and approximate routing)
has been installed in accordance with the design.
— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with
P&ID’s and all relevant set points are correct.
— Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s. (Particular focus around
relief and blowdown valves)
— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.
— Confirm necessary heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.
— Confirm dropped object protection (or procedural controls) are in place.
— Confirm by tests that blowdown valves operate within the desired time period, in the correct valve sequence. (Ideally a full live system
blowdown test is be conducted however it may be undesirable to conduct this test following startup with the plant finally in a steady state so
an alternative would be to review real time data logged by the control system of a blowdown event at some time after startup.
— Confirm that blowdown valves open when pressure in their respective actuating media is lost (including pressure in local energy storage
devices if provided) or loss of signal from the ESD system, i.e normally energized.
— Confirm relief valve interlocking arrangement or procedures.
— Confirm and test knock out drum set points.
— If not routed to the flare system, confirm other relief devices route to safe location as per drawings particularly hazardous area drawings as
applicable.
— Confirm cold vents are provided with weather protection.
— Confirm cold vents provided with local fire system, and tested.
— Confirm relief and blowdown piping is self-draining, there are no restriction to flow (other than properly sized orifaces) and that drain points
are provided at unavoidable low points.
— Confirm flare pilot is supplied from two sources of pilot gas.
— Confirm redundant ignition system operates effectively i.e. simulate flame out
— Confirm purging/snuffing arrangements are available and proceduralised.
— Confirm heat radiation is within acceptable levels, post startup.
DNV-OS-E201 — Confirm module integration piping is complete, installed as per P&IDs, correctly supported, flange management processes satisfactorily
Ch.2 Sec.2 [3.1]
completed and leak testing of complete integrated system is completed.
— Confirm necessary heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.
— Confirm dropped object protection (or procedural controls) are in place.
— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with
P&ID’s and all relevant set points are correct.
— Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s. (Particular focus around
relief and blowdown valves)
— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.
— Off specification fuel gas trips to be confirmed.
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 70
DET NORSKE VERITAS AS
Gas Treatment
and
Compression
Systems
DNV OS /
Rule Reference
System /
Equipment
Description
Water and Gas
Injection
DNV OS /
Rule Reference
DNV Surveillance Focus (Continued)
Heating and
DNV-OS-E201 — Confirm hydrocarbon leakage detection systems are installed and operational.
cooling Systems Ch.2 Sec.2 [5.1] — Confirm module integration piping is complete, installed as per P&IDs, correctly supported, flange management processes satisfactorily
completed and leak testing of complete integrated system is completed.
— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with
P&ID’s and all relevant set points are correct.
— Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s. (Particular focus around
relief and blowdown valves)
— Confirm inhibits, overrides and non-standard system configurations are correctly recorded in accordance with procedure.
— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.
— Confirm dropped object protection (or procedural controls) are in place.
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 71
DET NORSKE VERITAS AS
DNV-OS-E201 — Confirm module integration piping is complete, installed as per P&IDs, correctly supported, flange management processes satisfactorily
Ch.2 Sec.2 [4.1]
completed and leak testing of complete integrated system is completed.
— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.
— Confirm dropped object protection (or procedural controls) are in place.
— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with
P&ID’s and all relevant set points are correct.
— Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s. (Particular focus around
relief and blowdown valves)
— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.
— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.
— Confirm dropped object protection (or procedural controls) are in place.
— Confirm correct installation of non-return valves at injection points to wellhead
— Test injection point ESD valve.
Packaged
— Confirm location of manual release buttons
Rotating
— Confirm location, numbers and type of fire detectors
Equipment i.e.
— Confirm correct functioning of interlocks on doors, if applicable
compressors,
— Confirm the sequencing of fire detection, rotating equipment shutdown, fire dampers closing and fire extinguishing
water injection
— Confirm air tightness, differential pressure of enclosure
pumps, turbines
— Verify site connected piping, i.e. fuel, lube oil to be correctly installed, hydro tested, flushed/cleaned that all exterior surfaces are below
220°C at steady state.
— Verify critical unit control panel trips and intertrips to ICSS/PSD/ESD systems.
— Ensure manufacturer approved test programme followed.
— The vibrations in the entire speed range to be confirmed as insignificant.
— Check for leakage of lube oil and fuel oil before, during and after the commissioning trial.
— Check that all ancillaries and piping are visually inspected for vibration during testing. Checks to be done at all different load conditions to
detect resonance problems and identify an new support requirements.
— Refer to appendix F.4 Electrical Installations for generators and turbines
Water Treament DNV-OS-E201 — Confirm oil in water analyser is installed, calibrated and functional. Off specification recycle arrangement operational.
and disposal
Ch.2 Sec.2
— Confirm overboard dump arrangement, i.e. hazardous area.
System /
Equipment
Description
Chemical
Injection
Systems
Drainage
Systems
DNV OS /
Rule Reference
DNV Surveillance Focus (Continued)
DNV-OS-E201 — Confirm injection devices (quills) are installed correctly i.e. correct part of the process stream.
Ch.2 Sec.2 [6.1] — Confirm non-return valves are installed.
— For wellhead injection, automatic shutdowns valves to be tested.
— Confirm chemical storage area is correctly bunded.
— Confirm safety shower and eyewash arrangements.
— Confirm any additional fire fighting requirements for specific chemicals i.e. methanol resistant foam
DNV-OS-E201 — To be installed under process equipment where spillage or minor leaks could occur i.e.
Ch.2 Sec.2 [7.1]
— atmospheric tanks and pressure vessels with multiple flanges and instruments
— pumps
— heat exchangers
— rotating machinery
— sample points
— offloading system
— pig receivers and launchers, etc.
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 72
DET NORSKE VERITAS AS
— Confirm drip trays drain point installed on opposite corners of the drip tray to allow for vessel motions. Confirm liquid seal arrangement (or
other method to prevent gas migration) is installed and liquid level checked.
— Confirm open deck drainage system is correctly installed and operational for each module (probably during deluge test).
— Confirm segregation between hazardous and non-hazardous open drain systems.
— Confirm drain tank vent arrangements i.e. safe location, blanketing, weather protection, flame arrestors, dip pipes.
— Confirm module integration piping is complete, installed as per P&IDs, correctly supported, flange management processes satisfactorily
completed and leak testing of complete integrated system is completed.
— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with
P&ID’s and all relevant set points are correct.
— Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s. (Particular focus around
relief and blowdown valves)
— Confirm inhibits, overrides and non-standard system configurations are correctly recorded in accordance with procedure.
— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.
— Confirm dropped object protection (or procedural controls) are in place.
System /
Equipment
Description
Export System
DNV OS /
Rule Reference
DNV Surveillance Focus (Continued)
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 73
DET NORSKE VERITAS AS
DNV-OS-E201 — Confirm offloading arrangement is located the required distance from the accommodation and associated access ways and air intakes.
Ch.2 Sec.4 [3.1] — Confirm floating hoses and hawser are arranged such that foaling of propellers or other system is not possible.
— Confirm external offloading shutdown arrangements, i.e. telemetry/radio signal from shuttle tanker arrangements, hawser tension
DNV-OS-E201
monitoring, relative positioning monitoring, and receiving terminal, as applicable.
Ch.2 Sec.12
— Confirm hose real locking mechanism.
— Confirm hose draining procedures.
— Confirm offloading shutdown via ESD from pushbuttons and CCR.
— Confirm offloading control station operation.
— Confirm offload/export pump protection systems, set points and response times are correctly implemented.
— Complete function testing of the offload/export system to ensure all piping components and instrumentation have been installed in
accordance with P&ID’s and all relevant set points are correct.
— Confirm normal, automatic and manual emergency release mechanisms.
— Minimum flow recycle and non-return valve arrangements to be verified.
— Confirm inhibits, overrides and non-standard system configurations are correctly recorded in accordance with procedure.
— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.
— Confirm arrangement for pig launchers and receivers, i.e. interlocks, instrumentation and bleed arrangements to prevent inadvertent opening
while pressurised.
Ventilation
DNV-OS-D101 — Confirm overpressure ventilation arrangement including alarms at manned location.
Arrangements – Ch.2 Sec.4 [11.1] — Confirm air intake fire and gas detection arrangements and related fire damper closure times, fan trips.
External Rooms
— Confirm gas tight door self-closing mechanisms. Escape hatches to be checked.
— Confirm electrical conduits are suitably sealed.
— Confirm air intakes are located 3m outside hazardous areas.
Electrical
DNV-OS-D201 — See section on Electrical installations for requirements.
Systems and
DNV-OS-A101 — Confirm hazardous area drawing accurately reflect release sources and ventilation arrangements
Components
— Confirm that equipment and structures are suitable earthed.
— Confirm the electrical equipment suitable for hazardous area is suitable rated (EX certification)
Inert Gas System DNV Rules for — Confirm installation of inert gas piping system in accordance with approved drawings.
Ships Pt.5 Ch.3 — Confirm the inert gas system is capable of supplying a gas or mixture of gases with an oxygen content of
— not more than 5% at the correct flowrate, temperature and pressure.
Sec.11
— Confirm that the cargo tank blanketing system (IG system) maintains an oxygen deficient atmosphere in the cargo tanks under all foreseeable
operating conditions. Oxygen content not exceeding 8% by volume. Confirm acceptable dilution in cargo tanks.
— Confirm valve locking and interlocking arrangement or procedures.
— Confirm pressure/vacuum breaking devices installed.
— Confirm deck seal supply pump is running and maintaining levels in the deck seal.
— Confirm the inert gas system is capable of supplying a gas or mixture of gases with an oxygen content of
— not more than 5%
— Confirm all instrumentation feedback to the Inert gas control system is functioning and integrated where appropriate with ICSS/ESD/PSD
system.
— Portable instruments for measuring oxygen and flammable vapour concentration to be provided and used to verify instrumentation readings.
System /
Equipment
Description
Instrumentation,
Control and
Monitoring
Systems
Nitrogen
Generation
System
Escape and
Communication
DNV Surveillance Focus (Continued)
DNV-OS-E101 — See section on Instrumentation and Telecommunication systems for requirements.
Ch.2 Sec.4 [3.1] — On-board testing shall demonstrate, verify and document full functionality of all automation and safety systems and shall include:
- During installation, the correct function of individual equipment packages, together with establishment of correct parameters for
DNV-OS-D202
automation and safety (time constants, set points, etc.)
- During installation and sea trials, the correct function of systems and integration of systems, including the ability of the automation and
safety systems to keep any equipment under control (EUC) within the specified tolerances and carry out all safety / protective actions;
- The correct distribution, protection and capacity of power supplies
- Back-up and emergency automation and safety functions for essential unit/installation systems. The tests should demonstrate that the
essential installation functions are operable on the available back-up means of operation (as required in the relevant application standard),
and in a situation where the normal system is disabled as far as practical. A copy of the approved test programme shall be kept on the
installation, completed with final set points.
— Hydraulic automation and shut-down systems with on or off regulation shall be tested with maximum return flow to verify that return headers
are adequately sized and free of blockages which could prevent correct system performance.
— For pneumatic and hydraulic automation systems with accumulators used to ensure fail safe operation, tests shall include verification of
accumulator charge level and capacity.
DNV-OS-E201 — Confirm generator integration piping is complete, installed as per P&IDs
Ch.2 Sec.5
— Confirm small bore tubing is complete, installed as per P&IDs, correctly supported.
— Confirm dew points, liquid traps and regulator set points correct.
Rule for Ship
— Confirm generator integration piping is complete, installed as per P&IDs, correctly supported; flange management processes and small bore
Pt.5 Ch.3
tubing satisfactorily completed and leak testing of complete integrated system is completed.
— Confirm 02 detection operational.
DNV-OS-A101 — Confirmed two escape from modules and rooms in the topside areas is in accordance with approved designs.
Ch.2 Sec.5
— Surface coatings and marking to be confirmed adequate.
— PA/GA tests to be conducted on both ‘A’ and ‘B’ to confirm alarms are audible in process areas. Flashing beacons to be confirmed in high
noise areas.
— Confirm signage
— Confirm adequate lighting on escape routes on normal and emergency battery backup.
Recommended Practice DNV-RP-A205, October 2013
App.G Survey scope for specific class notations – Page 74
DET NORSKE VERITAS AS
Instrument Air
system
DNV OS /
Rule Reference
Recommended Practice DNV-RP-A205, October 2013
CHANGES – HISTORIC – Page 75
CHANGES – HISTORIC
Note that historic changes older than the editions shown below have not been included. Older historic changes
(if any) may be retrieved through http://www.dnv.com.
March 2012 edition
This is a new document.
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