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Title: Overpressure Protection
Author: David C. Hiatt & Donald E. Holtman
Source: 2002 Appalachian Gas Measurement Short Course
Year Published: 2002
Abstract: In a gas distribution system, each piece of pipe must be protected against overpressure or exceeding the maximum allowable operating pressure (MAOP) plus allowable build-up. This includes all feeder line, distribution mains and all service lines. In some cases the operating company will apply a maximum pressure to a pipeline that is less than the MAOP. Systems that have a history of corrosion problems or those that have operated for years at a lower pressure may be assigned a maximum operating pressure (MOP) that the company considers safe, and will install an overpressure device to protect from exceeding that pressure

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