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ASME B31.1 Power piping (ANSI B31.1)

RegSenseEnforcement and Audits - OSHAPulp and Paper MillsCompressed GasesConsensus StandardsIndustry Consensus StandardEnglishMachine GuardingAmerican Society of Mechanical Engineers (ASME)Welding and CuttingEnforcement and Audits - OSHAWelding and CuttingSafety & HealthGeneral Industry SafetyHydrogenSpecialized IndustriesFocus AreaHazardous Materials Safety - OSHAMachine GuardingOxygenUSA

This American National Standard covers design, materials, fabrication, erection, test and inspection of power piping systems. This Standard does not apply to building heating and distribution steam piping designed for 15 psi gage or less, or hot water heating systems designed for 30 psi gage or less. Among other things, the standard requires that:

  • Qualification records of welding procedures be kept, and
  • Snow and ice (where applicable) be considered for live load.

Current edition

  • ASME B31.1-2018 Power Piping

Incorporation by reference

The following editions have been incorporated by reference (IBR) into the Code of Federal Regulations (CFR):

1 ANSI B31.1 is now referred to as ASME B31.1.
IBR approved for Overview of requirements IBR approved edition
29 CFR 1910.103(b)(1)(iii)(b) Piping and tubing of gaseous hydrogen systems shall conform to Section 2, “Industrial Gas and Air Piping” Code for Pressure Piping, ANSI B31.1-1967 with addenda B31.1-1969. ANSI B31.1-1967 Code for Pressure Piping, including Addenda B31.1a-1969. 1
29 CFR 1910.103(c)(1)(v)(b) Gaseous hydrogen piping and tubing (above -20 deg. F.) shall conform to the applicable sections of Pressure Piping Section 2, Industrial Gas and Air Piping, ANSI B31.1-1967 with addenda B31.1-1969. ANSI B31.1-1967 Code for Pressure Piping, including Addenda B31.1a-1969. 1
29 CFR 1910.104(b)(5)(ii) Piping and tubing of bulk oxygen systems shall conform to Section 2, Gas and Air Piping Systems of Code for Pressure Piping, ANSI, B31.1-1967 with addenda B31.1a-1969. ANSI B31.1-1967 Code for Pressure Piping, including Addenda B31.1a-1969. 1
29 CFR 1910.218(d)(4) Steam or air piping for power-driven hammers shall conform to the specifications of American National Standard ANSI B31.1-1967, Power Piping with Addenda issued before April 28, 1971. ANSI B31.1-1967 Code for Pressure Piping, including Addenda B31.1a-1969. 1
29 CFR 1910.218(e)(1)(iv) Air piping for gravity hammers shall conform to the specifications of the ANSI B31.1-1967, Power Piping with Addenda issued before April 28, 1971. ANSI B31.1-1967 Code for Pressure Piping, including Addenda B31.1a-1969. 1
29 CFR 1910.253(d)(1)(i)(A) Service piping and fittings for oxygen-fuel gas welding and cutting shall comply with section 2, Industrial Gas and Air Piping Systems, of the American National Standard Code for Pressure Piping ANSI B31.1-1967. ANSI B31.1-1967 Code for Pressure Piping. 1
29 CFR 1910.261(a)(3)(vi) Establishments subject to this section (Pulp, paper, and paperboard mills) shall comply with the following standards of the American National Standards Institute: Power Piping, B31.1-1967 and addenda B31.1a-1969. ANSI B31.1-1967 Code for Pressure Piping, including Addenda B31.1a-1969. 1
29 CFR 1910.261(g)(18)(iii) Heavy-duty pipe, valves, and fittings shall be used between digester and blow pit. These shall be inspected at least semiannually to determine the degree of deterioration and repaired or replaced when necessary, in accordance with American National Standards B31.1-1955, B31.1a-1963, and B31.1-1967. ANSI B31.1-1955 Code for Pressure Piping, including Addenda ANSI B31.1a-1963, and
ANSI B31.1-1967 Code for Pressure Piping. 1

How to purchase

Standards are available for purchase from the American National Standards Institute (ANSI), see webstore.ansi.org, and from the American Society of Mechanical Engineers (ASME), see www.asme.org.

['Enforcement and Audits - OSHA', 'Specialized Industries', 'Hazardous Materials Safety - OSHA', 'Machine Guarding', 'Welding and Cutting']
['Oxygen', 'Machine Guarding', 'Hydrogen', 'Compressed Gases', 'Welding and Cutting', 'Enforcement and Audits - OSHA', 'Pulp and Paper Mills']
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