Pipelaying Tender-VOL IV - WorleyParsons.com

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EPMC SERVICES FOR REWARI – KANPUR PIPELINE SPECIFICATION FOR FIELD JOINT COATING (HEAT SHRINK SLEEVES) same or higher size indicated in the tender, for a length of 50 km and above in a single project for similar operating conditions. The proposed shrink sleeve system shall be compatible with and shall have good bonding properties with 3-Layer External PE, coating system. 3.2 FUNCTIONAL REQUIREMENTS OF FIELD JOINT COATING 3.2.1 PROPERTIES OF THE BACKING SHALL BE AS FOLLOWS POLYETHYLENE BACKING: Sr. No. PROPERTIES TEST CONDITIONS UNIT REQUIREMENT TEST METHOD a. Tensile Strength @ +25°C N / mm 2 12 DIN EN 12068 b. Ultimate Elongation @ +25°C % 250 DIN EN 12068 c. Dielectric Withstand 1000 volts/Sec KV 30 ASTM D149 d. Water absorption @ +25°C For 24 Hours % 0.05 ASTM D570 e. Volume Resistivity @ +25°C Ohm-cm 10 15 ASTM D257 n:\513-mh-2145-rkpl\11 engineering\11.8 pipelines\06 spec\specification for field joint coating\mh2145-c000-plspc-0015.doc MH2145-C000-PL-SPC-0015 RevA Page 11 of 42
EPMC SERVICES FOR REWARI – KANPUR PIPELINE SPECIFICATION FOR FIELD JOINT COATING (HEAT SHRINK SLEEVES) 3.2.2 FUNCTIONAL PROPERTIES OF JOINT COATING SYSTEM (AS APPLIED) As applied field joint coating system shall comply with the requirements of DIN EN 12068, Table 1 and Table 2 corresponding to designation DIN EN 12068 - C HT (60) UV, except as modified below: Cathodic Disbondment Resistance at Tmax i.e. 60°C shall be 20 mm when tested in accordance with Annexure K of DIN EN 12068. Test shall be carried out at (+) 60°C. Peel Strength shall be as follows: PEEL STRENGTH TEST PARAMETER UNIT REQUIREMENT FOR MECHANICAL RESISTANCE CLASS C (MINIMUM) TEST METHOD IN ACCORDANCE WITH DIN EN 12068 Inner to Inner (+) Outer to Inner Outer to Outer @ 23°C N/mm 1.5 @ Tmax N/mm 0.3 @ 23°C N/mm 1.5 @ Tmax N/mm 0.3 Annexure - B To pipe surface To Factory Coating @ 23°C N/mm 3.5 @ Tmax N/mm 1.0 @ 23°C N/mm 3.5 @ Tmax N/mm 1.0 Annexure - C NOTE: T max shall be (+) 60°C Contractor shall obtain prior approval from company regarding the manufacturing of the joint coating material and specific grade of the joint coating system. Complete technical details along with test certificates complying with the requirement of clause 3.2.1 & 3.2.2 shall be submitted to company for purpose. n:\513-mh-2145-rkpl\11 engineering\11.8 pipelines\06 spec\specification for field joint coating\mh2145-c000-plspc-0015.doc MH2145-C000-PL-SPC-0015 RevA Page 12 of 42
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Pipelaying Tender-VOL IV - WorleyParsons.com

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