M01 - FLANGES FLANGE MANAGEMENT AWARENESS TRAINING SUBJECT MATTER EXPERT: ENERMECH PROVIDER: CARMEL’S TEKNO LIMITED 1 Engineers & Consultants Module 01 – Flanges In this Module, we will learn: ✓ Types Of Flanges ✓ Common Flange Facings ✓ 4 Bolt - 2 Piece Clamp Connector ✓ Clamp Sealing Behaviour ✓ Practice and Demonstration www.carmel-s.com 2 Engineers & Consultants BOLTED JOINT A bolted joint has the following main components: flanges, stud bolts and nuts and gasket or seal. The purpose of these components when used correctly is to join two pieces of pipe work together without leakage of the contained product. www.carmel-s.com 3 Engineers & Consultants Types Of Flanges There are various types of flanges available. The type and material of a flange to be used is dependent on the service duty of the line. For process and utilities pipe work, the two most commonly used flange standards are ANSI B16.5 and BS1560. Common flange types www.carmel-s.com Weld neck Swivel ring Slip on 4 bolt clamp Compact 4 Engineers & Consultants Weld Neck Flange WELD NECK - the WN flange is butt welded to the pipe. This type of flange is normally used for high pressure systems often involving hazardous systems products www.carmel-s.com 5 Engineers & Consultants Swivel Ring Flange SWIVEL RING - as with the WN a butt will be welded. A swivel ring sits over the hub and allows the pipe flanges to be bolted together. This type of flange is normally found on subsea applications where the swivel ring aids flange alignment. www.carmel-s.com 6 Engineers & Consultants Slip On Flange SLIP-ON flanges are designed to slide over the outside diameter of the pipe to which it will be welded. These flanges are attached to the pipe by fillet welding at the hub and at the end of the pipe inside the flange. These flanges are normally used in high pressure applications. www.carmel-s.com 7 Engineers & Consultants Compact • Smaller and lighter alternative to conventional ANSI flanges • Bolts of less diameter than comparable ANSI flange but more of them, • Easy, quick and reliable make-up • Suitable for high pressure temperature requirements • Re-useable metal seal rings www.carmel-s.com 8 Engineers & Consultants Common Flange Facings Flat Face Flange Ring Type Joint Flange www.carmel-s.com Raised Face flange Spigot Type Flange 9 Engineers & Consultants 4 Bolt - 2 Piece Clamp Connector The fundamental principal of the clamp connector is that it is a pressure energised metal to metal seal. www.carmel-s.com 10 Engineers & Consultants Connector Components CLAMP HUB SEAL SEAT SEALRING www.carmel-s.com 11 Engineers & Consultants Clamp Sealing Behaviour STAND OFF + RIB THICKNESS INTERFERENCE POINT Connector Open Ready To Be Sealed www.carmel-s.com 12 Engineers & Consultants Clamp Sealing Behaviour Stored energy Pressure aided Clamp Closed Ready For Use www.carmel-s.com 13 Engineers & Consultants Practice and Demonstration • • • • Practice with the demo kit to show the flanges. Also show flange types, flange faces. Serration on Flat Face and Raised Face. The grove on RTJ and Hub assembly. www.carmel-s.com 14
