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
The results of the test shall meet the minimum requirements of the skelp with regard to
yield, tensile and elongation.
9.4 HYDROSTATIC TEST
9.4.1 Hydrostatic testing of the pipe shall be in accordance with API 5L para 10.2.6 and the
following.
Each length of pipe shall withstand, without leakage through the weld seam or the pipe
body, a hydrostatic test to a test pressure such that the hoop stress, calculated on the
basis of minimum specified wall thickness and including stresses from end loading, is at
least 95 percent of the specified minimum yield strength. If applied, the end load
compensation factor as determined by the formula given in API 5L, Para 10.2.6.6 shall
be used.
The test pressure for all sizes of pipe shall be held for not less than twenty seconds.
Hydrostatic test records will be checked by the Purchaser at his option.
9.8 CVN IMPACT TEST FOR PSL 2 PIPE
9.8.1 GENERAL
For pipe in the size and wall thickness combinations given in Table 22, charpy V-notch
tests shall be conducted in accordance with the requirements of clause 10.2.4.3 and the
following.
9.8.1.1 For tests using subsize specimens to determine absorbed energy, the observed
individual readings and the calculated average of the three individual readings per test
shall be converted to full-size equivalent values by dividing such readings by the ratio of
the specimen width tested to the full-size specimen width. For acceptance, full-size
equivalent values shall meet the applicable requirements specified for full-size
specimens (see 9.8.2.1, Annex G, and the 9.8.1.2 below).
9.8.1.2 The individual absorbed energy test value (actual for full-size specimens, and converted
for subsize specimens) is required to be not less than 80% of the required minimum
average absorbed energy value specified for full-size specimens.
9.8.1.3 The test temperature shall be + 32°F (0°C); however, pipe tested at a lower temperature
is also acceptable if it meets all other applicable fracture toughness requirements. For
all grades, the shear area of each specimen shall be reported for each heat.
9.8.1.4 For all pipe sizes and specified wall thickness, additional fracture toughness
requirements as per G.12 of Annex G of this specification shall be applicable for body,
weld and heat affected zone.
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