ASME B31.8-2007

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ASME B31.8-2007

Gas Transmission and Distribution Piping Systems
American Society of Mechanical Engineers / 01-Jun-2010 / 212 pages
Latest Version: ASME B31.8-2010
This Code covers the design, fabrication,installation, inspection, and testing of pipeline facilities used for the transportation of gas. This Code also covers safety aspects of the operation and maintenance of those facilities.
This Code does not apply to
(a) design and manufacture of pressure vessels covered by the BPV Code1
(b) piping with metal temperatures above 450°F or below −20°F (For low temperature within the range covered by this Code, see para. 812.)
(c) piping beyond the outlet of the customer’s meter set assembly (Refer to ANSI Z223.1 and NFPA 54.)
(d) piping in oil refineries or natural gasoline extraction plants, gas treating plant piping other than the main gas stream piping in dehydration, and all other processing plants installed as part of a gas transmission system, gas manufacturing plants, industrial plants, or mines (See other applicable sections of the ASME Code for Pressure Piping, B31.)
(e) vent piping to operate at substantially atmospheric pressures for waste gases of any kind
(f) wellhead assemblies, including control valves,flow lines between wellhead and trap or separator, offshore platform production facility piping, or casing and tubing in gas or oil wells. (For offshore platform production facility piping, see API RP 14E.)
(g) the design and manufacture of proprietary items of equipment, apparatus, or instruments
(h) the design and manufacture of heat exchangers (Refer to appropriate TEMA2 Standard.)
(i) liquid petroleum transportation piping systems (Refer to ASME B31.4.)
(j) liquid slurry transportation piping systems (Refer to ASME B31.11.)
(k) carbon dioxide transportation piping systems
(l) liquefied natural gas piping systems (Refer to NFPA 59A and ASME B31.3.)

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