Pipelaying Tender-VOL II - WorleyParsons.com

EPMC SERVICES FOR REWARI – KANPUR PIPELINESPECIFICATION FOR WELDING ON ONSHORE PIPELINE22. ULTRASONIC INSPECTIONUltrasonic examination is required as follows:• A zone 100mm wide around planned cutouts for nozzles, branches, etc.• To verify minimum wall thickness after grinding• Initial testing of automatic welds• At the commencement of welding with regard of an approved automatic process (other thanSAW) all welds shall be tested 100% by ultrasonic examination until OWNER is satisfied thatthe process is under complete control (minimum of 50 welds).• Where radiographic inspection does not clearly show compliance of the weld with regard of thisspecification.OWNER reserves the right to test proposed UT operators prior to acceptance using the approvedprocedures on a test weld.Ultrasonic inspection procedures when required shall be submitted to the OWNER for approval,prior to use.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 33 of 42