Pipelaying Tender-VOL IV - WorleyParsons.com

REWARI KANPUR PIPELINE
PROJECT
SUBMERGED ARS WELDED HELICAL
SEAM (SAWH) LINE PIPE
DOCUMENT NUMBER
0068-00-SPC-2003
Revision 0
ANNEX C
(NORMATIVE)
TREATMENT OF SURFACE IMPERFECTIONS AND DEFECTS
C.2 TREATMENT OF DRESSABLE SURFACT DEFECTS
C2.3 Add Following:
The repaired area shall be 100% rechecked by magnetic particle or ultrasonic inspection to
ensure complete removal of defects. However for repair of cosmetic type of defects, MPI
may not be conducted if so directed by Purchaser's Representative on case to case basis.
The pipes having a thickness less than the minimum allowed in accordance with this
specification, after repair by grinding shall be treated for disposition in accordance with
E.10 (c) or (d).
C.4 REPAIR OF DEFECTS BY WELDING
C.4.6
Repaired welds shall be inspected both by X-ray and UT. Clause C.4.6 of API 5L stands
modified accordingly.
C.4.7 The defective part of the weld shall be clearly marked on the pipe so that the defect can be
(New) easily located and repaired.
C.4.8
(New)
Following requirements shall also be complied with for repair welding:
a. No repair of weld seam is permissible at pipe ends up to a length of 300 mm.
b. Repair welding shall be executed only after specific approval by Purchaser
Representative for each repair.
c. No repair of a repaired weld is permitted.
d. The repair weld shall be performed with a minimum of two passes.
C.4.9 The Manufacturer shall also maintain a record of repairs carried out. The records shall
(New) include repair number, pipe identification number, welding procedure applicable and NDT
details.
0068-FMT-01 Page 23 of 41
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