HomeMagazine2018December 2018, Vol. 245, No. 12Assuring Integrity of Polyethylene Gas Pipeline Systems

December 2018, Vol. 245, No. 12

Features

Assuring Integrity of Polyethylene Gas Pipeline Systems

By Chris O’Connor and Richard Beedell, DNV GL, Oil & Gas Polyethylene (PE) revolutionized low-pressure gas distribution pipeline design on a global basis. Its unique benefits make it a material of choice. To maximize benefits, gas transporters continue to push the PE design envelope with more demanding applications, larger pipe diameters and higher operating pressures. Image 1: Simulated RCP failure – ISO 13478 full-scale chilled trench test. (All photos: DNV GL) Rapid crack propagation (RCP) is sometimes referred to as a “fast brittle fracture” or as a “linear split” by the construction industry. RCP is caused by the forced introd

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