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ASME B31.8

2018 Edition, November 20, 2018

Complete Document

Gas Transmission and Distribution Piping Systems



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Product Details:

  • Revision: 2018 Edition, November 20, 2018
  • Published Date: October 20, 2018
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ASME International (ASME)
  • Page Count: 206
  • ANSI Approved: No
  • DoD Adopted: Yes

Description / Abstract:

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 is concerned only with certain safety aspects of liquefied petroleum gases when they are vaporized and used as gaseous fuels. All of the requirements of NFPA 58 and NFPA 59 and of this Code concerning design, construction, and operation and maintenance of piping facilities shall apply to piping systems handling butane, propane, or mixtures of these gases.

This Code does not apply to

(1) design and manufacture of pressure vessels covered by the BPV Code1

(2) piping with metal temperatures above 450°F (232°C)

(3) piping beyond the outlet of the customer's meter set assembly

(4) 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

(5) vent piping to operate at substantially atmospheric pressures for waste gases of any kind

(6) 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

(7) the design and manufacture of proprietary items of equipment, apparatus, or instruments

(8) the design and manufacture of heat exchangers

(9) liquid petroleum transportation piping systems

(10) liquid slurry transportation piping systems

(11) carbon dioxide transportation piping systems

(12) liquefied natural gas piping systems

(13) cryogenic piping systems

1BPV Code references here and elsewhere in this Code are to the ASME Boiler and Pressure Vessel Code.