Pipelaying Tender-VOL II - WorleyParsons.com

EPMC SERVICES FOR REWARI – KANPUR PIPELINESPECIFICATION FOR WELDING ON ONSHORE PIPELINE• For standard size specimen the minimum average value is 52 Joules and minimum Individual valueis 39 Joules as per the line pipe specification.• The values for reduced thickness size shall be calculated by multiplying the standard size values withregard of 0.75 for 10x7.5 mm size and with regard of 0.5 for 10x5.0 mm size.• The test temperature shall be at 0°C7.3.2 Qualification of Repair Weld Procedurea) Cracked welds shall not be repaired and removed from the line.b) The repair welding procedure shall be established and qualified to demonstrate that the weldwith regard of suitable mechanical properties and soundness can be produced.c) The procedure shall include the method of excavation and the additional NDT requirement.7.3.3 Weld Procedure Approvala) CONTRACTOR shall review, witness and submit for approval all non-destructive anddestructive testing. All mechanical testing shall be carried out by a certified testing facility subject tothe approval of the OWNER.b) All mechanical Testing of Procedure Qualification tests shall be witnessed and certified by anIndependent Inspecting Authority approved by the OWNER.c) Following qualification the CONTRACTOR shall prepare a Weld Procedure Specification (WPS), foruse on site. The CONTRACTOR shall then submit the complete package of WPSs and WeldProcedure Qualification Records (WPQRs) for approval by the OWNER.d) Production welding shall not commence until the WPSs and WPQRs have been approved by theOWNER.The package shall consist of at least the following:-• Register cross-referencing WPQR to WPS.• WPS (see Figure 1 of API Standard 1104).• WPQR (see Figure 2 of API Standard 1104)• NDE and visual inspection reports.• Mill and certificates for pipes.• Batch certificates for consumables.• Heat treatment charts, if applicable.• All third party certified mechanical test results certificates from the test laboratory.n:\513-mh-2145-rkpl\11 engineering\11.8 pipelines\06 spec\specification for welding on onshorepipeline\mh2145-c000-pl-spc-0020.docMH2145-C000-PL-SPC-0020 RevA Page 16 of 42