ASME PCC-2-2008

Repair of Pressure Equipment and Piping

This Standard provides methods for repair of equipment and piping within the scope of ASME Pressure Technology Codes and Standards after it has been placed in service. These repair methods include relevant design, fabrication, examination, and testing practices and may be temporary or permanent, depending on the circumstances. The methods provided in this Standard address the repair of components when repair is deemed necessary based on appropriate inspection and flaw assessment. These inspection and flaw evaluation methods are not covered in this document, but are covered in other post-construction codes and standards. Only technical procedures and information are provided; administrative or policy requirements are outside of the scope of this Standard.

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ANSI/ASME B31.12-2008

Process Piping

This 258 page standard was published on Mar 31, 2009 by American Society of Mechanical Engineers.

This Code is applicable to piping in gaseous and liquid hydrogen service and to pipelines in gaseous hydrogen service. This Code is applicable up to and including the joint connecting the piping to associated pressure vessels and equipment but not to the vessels and equipment themselves. It is applicable to the location and type of support elements but not to the structure to which the support elements are attached. This Code is presented in the following parts:

(a) Part GR — General Requirements. This part contains definitions and requirements for materials, welding, brazing, heat treating, forming, testing, inspection, examination, operation, and maintenance.

(b) Part IP — Industrial Piping. This part includes requirements for components, design, fabrication, assembly, erection, inspection, examination, and testing of piping.

(c) Part PL — Pipelines. This part sets forth requirements for components, design, installation, and testing of hydrogen pipelines.

It is required that each part be used in conjunction with the General Requirements section but independent of the other parts. It is not intended that this edition of this Code be applied retroactively to existing hydrogen systems.

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ANSI/ASME B16.5-2009

Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard

This 238 page standard was published on Jun 30, 2009 by American Society of Mechanical Engineers.

This Standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. Included are:

  • flanges with rating class designations 150, 300, 400, 600, 900, and 1500 in sizes NPS 1/2 through NPS 24 and flanges with rating class designation 2500 in sizes NPS 1/2 through NPS 12, with requirements given in both metric and U.S. Customary units with diameter of bolts and flange bolt holes expressed in inch units
  • flanged fittings with rating class designation 150 and 300 in sizes NPS 1/2 through NPS 24, with requirements given in both metric and U.S. Customary units with diameter of bolts and flange bolt holes expressed in inch units
  • flanged fittings with rating class designation 400, 600, 900, and 1500 in sizes NPS 1/2 through NPS 24 and flanged fittings with rating class designation 2500 in sizes 1/2 through NPS 12 that are acknowledged in Nonmandatory Appendix E in which only U.S. Customary units are provided

This Standard is limited to:

  • flanges and flanged fittings made from cast or forged materials
  • blind flanges and certain reducing flanges made from cast, forged, or plate materials
  • Also included in this Standard are requirements and recommendations regarding flange bolting, gaskets, and joints.

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GPTC Guide for Gas Transmission and Distribution Piping Systems (ANSI Z380.1-2009), 2009 Edition

AGA Z380109

This guide contains the U.S. DOT Pipeline Safety Code Title 49-Part 191 and Part 192, plus guide material prepared by the Gas Piping Technology Committee accredited by the American National Standards Institute (ANSI). The guide is continuously updated by the GPTC which issues addenda on a periodic basis. These addendums will include new or revised guide material, as well as updates to Parts 191 and 192. Purchasers of the 2009 edition will automatically receive notification of the availability of the addendums, which will be made available in hard copy and downloadable formats.

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This guide is available in printed or PDF edition.