Pipelaying Tender-VOL II - WorleyParsons.com

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EPMC SERVICES FOR REWARI – KANPUR PIPELINESPECIFICATION FOR WELDING ON ONSHORE PIPELINE15. MARKING WELDSAll welds shall be given a unique number in sequence. The sequence shall be recorded onidentification weld reports and/ or field drawings. The weld numbering sequence and tractabilityshall be addressed in the Contractor's procedure and submitted to the OWNER for approval.The weld numbers shall be legible/ identifiable up to the post padding/ backfilling operations. Punchor steel stamping shall not be permitted.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 26 of 42
EPMC SERVICES FOR REWARI – KANPUR PIPELINESPECIFICATION FOR WELDING ON ONSHORE PIPELINE16. PROXIMITY OF WELDSAdjacent circumferential welds in pipelines shall be separated by a minimum of 2 times the outsidediameter or 500mm whichever is greater.The distance can be reduced to 500mm in the above ground pipe at valve stations and pipe on theplant side of anchor blocks or expansion loops at end stations.Branches, fittings and attachments shall be separated away from other welds on the pipeline. Theminimum separation shall be the greater of either:• Diameter of Branch/ Fitting• Four (4) times the wall thickness of the thickest <strong>com</strong>ponent• 50mmn:\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 27 of 42
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Pipelaying Tender-VOL II - WorleyParsons.com

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