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
9.12.5.6 BEVEL PROTECTORS
(New)
Both pipe ends of each pipe shall be provided with metallic or high impact plastic bevel
protectors as per Manufacturer's standard. Bevel protectors shall be of a design such
that they can be re-used by coating applicator for providing on externally anti-corrosion
coated pipes subsequent to coating of line pipe.
9.13 TOLERANCES FOR THE WELD SEAM
9.13.1 All pipes shall be checked for offset of skelp edges. Offset shall be measured and
recorded at least 3 times per operating shift (12 hours maximum). Forming and welding
operations shall be conducted to minimize coil edge offset and distortion and peaking at
the helical or spiral seams. The manufacturer shall provide the appropriate tooling with
‘Vee’ blocks and calibrated dial indicators needed to measure the distortion and
misalignment at the seam. Measurements shall be taken at two locations (at a distance
of one to two diameters from each end) on each pipe joint. In case of unacceptable
offsets, the manufacturer shall adjust the forming and welding equipment.
9.13.2 Height of flash or weld bead/reinforcement.
9.13.2.2 For submerged-arc welds, the maximum height of outside and inside weld bead shall not
be more than 3.2 mm (1/8 in.) for all specified wall thickness. Table-16 of API Spec 5L
stands deleted. All pipes shall be checked for weld bead height using a template having
a cut out for weld bead and shall be measured and recorded at least 3 times per
operating shift (12 hours maximum).
9.13.3 Misalignment of the weld beads of SAW and COW pipes.
A misalignment of weld seam of SAW pipes exceeding 3.5 mm shall be rejected. The
misalignment shall be measured on radiographic film and calculated using the formula
(a+b)/2 where ‘a’ and ‘b’ are the relative offsets of the outside edges of the seam (refer
figure 9.13.3 of this specification, figure-4(d) of API 5L stands modified accordingly). All
pipes shall be checked for out-of-line weld bead and shall be measured and recorded at
least 3 times per operating shift (12 hours maximum).
Checking of the weld seam misalignment shall also be carried out on metallographic
examination specimen as stated at para 10.2.5.
10.0 INSPECTION
10.2 SPECIFIC INSPECTION
10.2.1 INSPECTION FREQUENCY
10.2.1.2 For PSL 2 pipe, the inspection frequency shall be as modified and given below. Table 18
of API 5L shall be read in conjuction with modification given below.
0068-FMT-01 Page 13 of 41
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