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Title: Periodic Inspection Of District Regulators & Relief Valves
Author: George L. Bell
Source: 1993 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1993
Abstract: Inspections of district regulating stations and overpressure protection devices are essential in complying with Federal and State Regulations, District regulators reduce high inlet pressure to a lower outlet pressure that is below the maximum allowable operating pressure (M.A.O.P.) for a segment of pipeline. The district regulators may also be used to reduce an intermediate pressure to an even lower utilization pressure. District regulators may be installed for your companys operation to reduce a line segments lost and unaccountable, gas purchased, tapping requirements, or odorization problems. Overpressure protection devices are devices that protect the downstream pipeline in the event of a regulator failure. These devices include the relief valve, the monitor, and the pressure shutoff. These regulators and overpressure protection devices, because of their importance to system operations, must be inspected in accordance to federal and state regulations.

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