scope:

This Code prescribes minimum requirements for the design, materials, construction, assembly, inspection, and testing of piping transporting liquid petroleum such as crude oil, condensate, natural gasoline, natural gas liquids, liquefied petroleum gas, and liquid petroleum products between producers' lease facilities, tank farms, natural gas processing plants, refineries, stations, terminals, 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, stanchions, or foundations, or any equipment such as defined in 400.1.2(b ).

Also included within the Scope of this Code are:

(a) Primary and associated auxiliary liquid petroleum piping at pipeline terminals, tank farms, pump stations, pressure reducing stations, and metering stations, including scraper traps, strainers, and prover loops.

(b) Storage and working tanks, including pipe type storage fabricated from pipe and fittings, and piping interconnecting these facilities.

(c) Liquid petroleum piping located on property which has been set aside for such piping within petroleum refinery, natural gasoline, gas processing, and bulk plants.

(d) Those aspects of operation and maintenance of liquid petroleum transportation piping systems relating to the safety and protection of the general public, operating company personnel, environment, property, and the piping systems. [See 400(c) and (d).] 400.

This Code does not apply to:

(a) Auxiliary piping such as water, air, steam, lubricating oil, gas, and fuel.

(b) Pressure vessels, heat exchangers, pumps, meters, and other such equipment including internal piping and connections for piping except as limited by 423.2.4(b).

(c) Piping designed for internal pressures:

(1) at or below 15 psig regardless of temperature.

(2) above 15 psig if design temperature is below minus 20 F or above 250 F.

(d) Casing, tubing, or pipe used in oil wells, wellhead assemblies, oil and gas separators, crude oil production tanks, other producing facilities, and pipelines interconnecting these facilities.

(e) Petroleum refinery, natural gasoline, gas processing and bulk plant piping, except as covered under 400.1.1 (c).

(f) Gas transmission and distribution piping.

(g) The design and fabrication of proprietary items of equipment, apparatus or instruments, except as limited by 423.2.4(b).