Flow Chart for Piping Works
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Transcript of Flow Chart for Piping Works
ELEVATED SUBSTATION IN SEK Doc. No.: 50614-000-FA5-PRO-0008Doc Title: Fabrication and Installation Procedure for U/G Piping Date: 19-Jan.-2014
Rev.CAttachment # 5: FLOW CHART FOR PIPING WORK PROCEDURE
TRANSPORTATION OF PLAIN END PIPE TO IMCO BY SKEC
UNLOADING IN IMCO WORKSHOP BY IMCO
ALL SPOOLS WILL BE FABRICATED IN IMCO
WORKSHOP
FIT-UP & WELDING OF SPOOLS WILL BE CARRIED OUT IN IMCO
WORKSHOP
ALL WELDING JOINTS ARE 100% SHOP JOINTS
THERE ARE NO WELDING JOINTS IN FIELD & ONLY BOLTING
JOINTS ARE ALLOWED IN FIELD
ONCE THE FABRICATION OF SPOOLS ARE COMPLETED, NDT WILL BE CARRIED OUT
ON SPOOLS
AFTER NDT IS CLEARED, HYDROTEST WILL BE CARRIED
OUT ON ALL SPOOLS (100% HYDROTEST) IN IMCO
WORKSHOP
AFTER HYDROTEST, THE SPOOLS WILL BE
TRANSPORTED TO NCC COATING WORKSHOP BY
IMCO
THE SPOOLS WILL BE UNLOADED BY NCC. INTERNAL
& EXTERNAL COATING WILL BE DONE IN NCC YARD. AFTER
FINAL INSPECTION FOR COATING, IT WILL BE LOADED
BY NCC
AFTER COATING IS COMPLETED, THE SPOOLS WILL BE TRANSPORTED TO RESPECTIVE GC BY IMCO
ONCE THE CIVIL EXCAVATION ARE COMPLETED AND INSPECTIONS
DONE, THE PIPE WILL BE LAID IN THE EXCAVATED AREA & BOLTING OF FLANGE JOINTS WILL BE DONE.
AFTER, BOLT TORQUE TIGHTENING WILL BE DONE ON BOLTED JOINTS
INSPECTION NOTIFICATION WILL BE SUBMITTED TO PMC BEFORE 24 HOURS PRIOR FOR HYDROTEST
AFTER ALL BOLTING JOINTS ARE DONE IN FIELD, FIELD HYDROTEST WILL BE CARRIED OUT TO CHECK
FOR ANY LEAKS
AFTER HYDROTEST ARE DONE , HOLIDAY TEST FOR COATED PIPE
WILL BE INSPECTED
SUBMIT INSPECTION NOTIFICATION FOR SURVEY REPORT PRIOR TO BACKFILLING
AFTER SUCCESSFULLY COMPLETING THE INSPECTION, THE BACKFILLING
WILL BE CARRIED OUT