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This Code prescribes requirements for the design, materials, construction,
assembly, inspection, and testing of piping transporting liquids such as crude
oil, condensate, natural gasoline, natural gas liquids, liquefied petroleum gas,
carbon dioxide, liquid alcohol, liquid anhydrous ammonia and liquid petroleum
products between producers' lease facilities, tank farms, natural gas processing
plants, refineries, stations, ammonia plants, terminals (marine, rail and truck)
and other delivery and receiving points. Piping consists of pipe, flanges,
bolting, gaskets, valves, relief devices, fittings and the pressure containing
parts of other piping components. It also includes hangers and supports, and
other equipment items necessary to prevent overstressing the pressure containing
parts. It does not include support structures such as frames of buildings,
buildings stanchions or foundations Requirements for offshore pipelines are
found in Chapter IX. Also included within the scope of this Code are: (A)
Primary and associated auxiliary liquid petroleum and liquid anhydrous ammonia
piping at pipeline terminals (marine, rail and truck), tank farms, pump
stations, pressure reducing stations and metering stations, including scraper
traps, strainers, and prover loop; (B) Storage and working tanks including
pipe-type storage fabricated from pipe and fittings, and piping interconnecting
these facilities; (C) Liquid petroleum and liquid anhydrous ammonia piping
located on property which has been set aside for such piping within petroleum
refinery, natural gasoline, gas processing, ammonia, and bulk plants; (D) Those
aspects of operation and maintenance of liquid pipeline systems relating to the
safety and protection of the general public, operating company personnel,
environment, property and the piping systems.
ASME B31.4 - 2006 Pipeline Transportation Systems for Liquid Hydrocarbon and Other Liquids