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Title: Periodic Inspection Of District Regulator And Relief Valves
Author: John Johnson
Source: 2007 American School of Gas Measurement Technology
Year Published: 2007
Abstract: Regulators and Over Pressure Protection Devices (OPPD) must be inspected in accordance to Federal and State Law and Company policy. Over pressure protection devices are devices that protect the downstream piping in the event of a regulator failure. These devices include a relief valve, a monitor regulator, or a positive pressure shut off. In Texas, inspection interval must be at least once per calendar year, at intervals of no more than 15 months.

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