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Pipelaying Tender-VOL IV - WorleyParsons.com

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EPMC SERVICES FOR REWARI–KANPUR PIPELINE<br />

SPECIFICATION FOR PIPELINE BARRED TEE<br />

line pipe and Scraper traps, in accordance with the specifications as given in Clause 2.2 of<br />

this specification.<br />

Material shall conform to the specifications as given in Appendix B of this specification. As a<br />

minimum, the grade, mechanical properties, chemical <strong>com</strong>position and carbon equivalent<br />

(CE) for tee material and bars shall satisfy the requirements of the applicable line pipe<br />

specification(s) or as per OISD 141 clause 11.6.5. Deviations to the chemical <strong>com</strong>position<br />

shall be stated. Fracture toughness shall include charpy testing, in parent material, weld and<br />

HAZ, but not Drop Weight Tear Testing.<br />

The tee shall be manufactured from material, which meets the specified minimum yield<br />

strength of the mating pipe. Actual yield shall not exceed the 80,000 psi (550 Mpa).<br />

The material for barred tee shall consist of blooms, billets, slabs, forging quality bar, plate,<br />

seamless or fusion welded tubular products with filler metal added. The chemical <strong>com</strong>position<br />

and physical properties of barred tee shall meet the line pipe specification (0068-00-SPC-<br />

2001_0). The material shall be ASTM A 860 F65 (VENDOR to confirm) or suitable API<br />

standard 5L pipe to achieve tensile properties of WPHY-65 (VENDOR to confirm). The fittings<br />

shall be heat treated by normalizing, quenching and tempering to achieve the same strength<br />

of line pipe.<br />

Fittings shall not be machined from barstock or solid forged billets.<br />

Tees shall be supplied in the normalized, normalized and tempered or quenched and<br />

tempered condition.<br />

A ring of material may be required from the main run of pipe for weld procedure qualifications<br />

for the main pipeline. This will be indicated on the purchase order. Rings shall be 400mm<br />

minimum in length and subject to the same forging and heat treatment as the supplied tee.<br />

n:\513-mh-2145-rkpl\11 engineering\11.8 pipelines\06 spec\specification for pipeline barred tee\mh2145-c000-plspc-0008.doc<br />

EV<br />

MH2145-C000-PL-SPC-0008 RevA Page 10 of 25

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