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Title: New Us Rating Method For Pe Pipe- Route To Higher Operating Pressures
Author: Eugene F. Palermo
Source: American Gas Association 1994
Year Published: 1994
Abstract: In the first part of this paper, Ed Reaney described the desire of some US gas companies to operate their gas distribution, gas gathering or gas transmission (feeder line) systems at higher pressures. The current maximum allowable operating pressure (MAOP) for plastic pipe has been established by the Department of Transportation (DOT) at 100 psig (6.9 bar)( , ) However, some gas companies would like to operate their systems at higher pressures, up to 175 psig (12 bar). With the ductile strength of some polyethylene (PE) piping materials (rating method), retention of this ductile strength by improved resistance to slow crack growth (SCG), and improved resistance of these piping materials to rapid crack propagation (RCP), operation of PE piping systems at higher pressures is now feasible.

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