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Title: Methodology To Determine Design Life Of Assemblies Of Pe Gas Distribution Pipe, Heat Fusion Fittings, And Heat Fusion Joints
Author: Gene Palermo
Source: American Gas Association 2013
Year Published: 2013
Abstract: Improvements in the long-term performance of PE piping compounds have created interest in the use of higher operating pressures for gas distribution piping systems. In Canada, this has culminated in the approval of PE 100 pipe with a 2.0 design coefficient that results in an operating pressure of 145 psig for SDR 11 pipe In the US, the AGA has submitted a petition to PHMSA to increase the design factor to 0.40. When the 0.40 design factor is approved, SDR 11 PE 4710 pipe with an ASTM D 2837 HDB of 1600 psi can be operated up to 125 psig (calculated value is 128 psig, but DOT limit for PE is 125 psig) for gas applications in the US. It is clear from these initiatives that there is increasing interest in the safe operation of high performance PE 2708 and PE 4710 gas pipe systems at higher system operating pressures.

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