ASME B31.8-2007 pdf download.Gas Transmission and Distribution Piping Systems.
801 GENERAL 801.1 Standards and Specifications 801.11 Standards and specifications approved for use under the Code and the names and addresses of the sponsoring organizations are shown in Appendix A. It is not considered practicable to refer to a specific edition ofeachofthe standards and specificationsinthe individ- ual Code paragraphs. 801.12 Use ofStandards and Specifications Incorpo- rated by Reference. Some standards and specifications cited in Appendix A are supplemented by specific requirements elsewhere in this Code. Users of this Code are advised against attempting direct application of any of these standards without carefully observing the Code’s reference to that standard. 801.2 Standard Dimensions Adherence to American National Standards Institute (ANSI) dimensions is strongly recommended wherever practicable. Paragraphs or notations specifying these and other dimensional standards in this Code, however, shall not be mandatory, provided that other designs of at least equal strength and tightness, capable of with- standing the same test requirements, are substituted. 801.3 SI (Metric) Conversion Forfactors used inconverting Englishunits to SI units, see Appendix J. 802 SCOPE AND INTENT 802.1 Scope 802.11 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.
802.12 This Code does not apply to (a) design and manufacture of pressure vessels cov- ered by the BPV Code 1 (b) piping with metal temperatures above 450°F or below −20°F (For low temperature within the range cov- ered 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 extrac- tion plants, gas treating plant piping other than the main gas stream piping in dehydration, and all other pro- cessing 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) ventpipingto operateatsubstantiallyatmospheric pressures for waste gases of any kind (f) wellhead assemblies, including control valves, flow lines between wellhead and trap or separator, off- shore platform production facility piping, or casing and tubing in gas or oil wells. (For offshore platform produc- tion 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 TEMA 2 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.)
802.22 This Code is concerned with (a) Safety of the general public. (b) Employee safety to the extent that it is affected by basic design, qualityofmaterials and workmanship, and requirements for testing, operations, and maintenance of gas transmission and distribution facilities. Existing industrial safety procedures pertaining to work areas, safety devices, and safe work practices are not intended to be supplanted by this Code. 802.23 It is not intended that this Code be applied retroactively to such aspects of existing installations as design, fabrication, installation, and testing at the time of construction. Further, it is not intended that this Code be applied retroactively to established operating pres- sures of existing installations, except as provided for in Chapter V. 802.24 Provisions of this Code shall be applicable to operating and maintenance procedures of existing installations, and when existing installations are uprated. 802.25 Qualification of Those Performing Inspec- tions. Individuals who perform inspections shall be qualified by training and/or experience to implement the applicable requirements and recommendations of this Code. 802.26 For further information concerning pipe- line integrity, reference the nonmandatory supplement ASME B31.8S, Managing System Integrity of Gas Pipelines. 802.3 Offshore Gas Transmission See Chapter VIII for additional requirements and defi- nitions applicable to offshore gas transmission systems.