The first statute regulating pipeline safety was the Natural Gas Pipeline Safety Act of 1968, which Congress amended in 1976. Congress added liquid pipelines to the statute in the Pipeline Safety Act of 1979. Subsequent bills included the Pipeline Safety Reauthorization Act of 1988, the Pipeline Safety Act of 1992, the Accountable Pipeline Safety and Partnership Act of 1996, the Pipeline Safety Improvement Act of 2002, the Pipeline Inspection, Protection, Enforcement, and Safety Act of 2006, and the Pipeline Transportation Safety Improvement Act of 2011 recently passed by the US Senate on the 17th day of October 2011.
Congress created the Office of Pipeline Safety (OPS) in 1968 to oversee and implement pipeline safety regulations. OPS is housed in the Department of Transportation (DOT) under the Research and Special Programs Administration (RSPA). OPS oversees interstate pipelines while states are responsible for intrastate pipelines. Our state Pipeline regulatory agency is the Railroad Commission of Texas.

1977 - PHMSA Interpretation #PI-77-029
2002 - Assessment of the need for an improved inspection program for Master Meter Systems


Master Metered System - A pipeline system (other than one designated as a local distribution system) for distributing natural gas within but not limited to a definable area, such as a mobile home park, housing project, or apartment complex, where the operator purchases metered gas from an outside source for resale through a gas distribution pipeline system. The gas distribution pipeline system supplies the ultimate consumer who either purchases the gas directly through a meter or by other means such as rents.

Texas Administrative Code TITLE 16 Part 1 RAILROAD COMMISSION OF TEXAS
Master Metered System Rules

Master Meter System Diagram
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