ASME B31.12-2019
Hydrogen Piping and Pipelines

Standard No.

ASME B31.12-2019

Release Date

2019

Published By

American Society of Mechanical Engineers (ASME)

Status

Be replaced 2019-01

Replace By

ASME B31.12-2019/errata-2020

Latest

ASME B31.12-2023

Replace

ASME B31.12:2014

Scope

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. The design for pressure and temperature shall be in accordance with the requirements of Part IP for industrial piping and Part PL for pipelines. This Code is presented in the following parts and appendices: (a) Part GR — General Requirements. Part GR contains requirements applicable to and referenced by other parts. It contains definitions and requirements for materials, welding, brazing, heat treating, forming, testing, inspection, examination, operation, and maintenance. It also contains quality system topics common to the other parts. (b) Part IP — Industrial Piping. Part IP includes requirements for components, design, fabrication, assembly, erection, inspection, examination, and testing of piping. (c) Part PL — Pipelines. Part PL sets forth requirements for components, design, installation, and testing of hydrogen pipelines. (d) Mandatory Appendices I through IX (e) Nonmandatory Appendices A through F Each part defines requirements for piping or pipelines, as applicable, within its scope. The requirements are different for different aspects of components, design, fabrication, installation, assembly, erection, inspection, examination, and testing. It is required that each part be used in conjunction with the General Requirements section but independent of the other parts. The joint connecting piping governed by two different parts shall be subject exclusively to the requirements of one of the two parts. It is not intended that this edition of this Code be applied retroactively to existing hydrogen systems. 本规范适用于气态和液氢工况中的管道以及气态氢工况中的管道。本规范适用于并包括将管道连接到相关压力容器和设备的接头，但不适用于容器和设备本身。它适用于支撑元件的位置和类型，但不适用于支撑元件所附着的结构。压力和温度的设计应符合工业管道IP部分和管道PL部分的要求。本准则分为以下部分和附录： （a） 遗传资源部分——一般要求。GR部分包含适用于其他部分并被其他部分引用的要求。它包含材料、焊接、钎焊、热处理、成型、测试、检查、检查、操作和维护的定义和要求。它还包含其他部分共有的质量体系主题。 （b） 知识产权部分——工业管道。零件 IP 包括对管道的组件、设计、制造、装配、安装、检查、检查和测试的要求。 （c） PL部分——管道。PL部分规定了氢气管道的组件，设计，安装和测试的要求。 （d） 强制性附录一至九 （e） 非强制性附录A至F 每个零件定义其范围内的管道或管线要求（如果适用）。组件、设计、制造、安装、组装、安装、检查、检查和测试的不同方面的要求不同。要求每个部分与“一般要求”部分一起使用，但独立于其他部分。由两个不同部分控制的接头连接管道应完全服从两个部分之一的要求。本规范的本版本不打算追溯适用于现有的氢气系统。

ASME B31.12-2019 Referenced Document

• ASME B1.1 Unified Inch Screw Threads (UN, UNR, and UNJ Thread Forms)*， 2020-06-30 Update
• ASME B1.20.1 Pipe Threads@ General Purpose (Inch)
• ASME B1.20.3 Dryseal Pipe Threads,Inch
• ASME B1.20.7 Hose Coupling Screw Threads (Inch)
• ASME B16.1 Gray Iron Pipe Flanges and Flanged Fittings Classes 25, 125, and 250*， 2020-11-09 Update
• ASME B16.11 Forged Fittings, Socket-Welding and Threaded*， 2024-04-21 Update
• ASME B16.14 Ferrous Pipe Plugs@ Bushings@ and Locknuts with Pipe Threads
• ASME B16.15 Cast Copper Alloy Threaded Fittings Classes 125 and 250
• ASME B16.20 Metallic Gaskets for Pipe Flanges
• ASME B16.21 Nonmetallic Flat Gaskets for Pipe Flanges
• ASME B16.24 Cast Copper Alloy Pipe Flanges, Flanged Fittings, and Valves Classes 150, 300, 600, 900, 1500, and 2500*， 2022-04-08 Update
• ASME B16.25 Buttwelding Ends
• ASME B16.34 Valves Flanged, Threaded and Welding End
• ASME B16.36 Orifice Flanges*， 2020-12-31 Update
• ASME B16.38 Large Metallic Valves for Gas Distribution
• ASME B16.47 Large diameter steels flanges - NPS 26 through NPS 60; Addenda
• ASME B16.5 Forged Nonferrous Fittings, SocketWelding and Threaded (Titanium, Titanium Alloys, Aluminum, and Aluminum Alloys)
• ASME B16.50 Wrought Copper and Copper Alloy Braze-Joint Pressure Fittings*， 2022-02-28 Update
• ASME B16.9 Factory-Made Wrought Buttwelding Fittings
• ASME B18.2.1 Square@ Hex@ Heavy Hex@ and Askew Head Bolts and Hex@ Heavy Hex@ Hex Flange@ Lobed Head@ and Lag Screws (Inch Series) (Includes Errata July 2013)
• ASME B18.2.2 Nuts for General Applications: Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series) (B18.2.2 - 2010)
• ASME B31.1 Power Piping*， 2022-10-10 Update
• ASME B31.2 Fuel gas piping
• ASME B31.3 
• ASME B31.4 Pipeline Transportation Systems for Liquids and Slurries*， 2022-12-08 Update
• ASME B31.8 Gas Transmission and Distribution Piping Systems*， 2022-12-22 Update
• ASME B31.8S Managing System Integrity of Gas Pipelines - ASME Code for Pressure Piping, B31. Supplement to ASME B31.8*， 2023-01-16 Update
• ASME B31G Manual for Determining the Remaining Strength of Corroded Pipelines
• ASME B36.10M Welded and Seamless Wrought Steel Pipe
• ASME B36.19M Stainless Steel Pipe
• ASME B46.1 Surface Texture (Surface Roughness, Waviness, and Lay) ( - 2009)

ASME B31.12-2019 history

• 1970 ASME B31.12-2023 Hydrogen Piping and Pipelines
• 2019 ASME B31.12-2019/errata-2020 Hydrogen Piping and Pipelines
• 2019 ASME B31.12-2019 Hydrogen Piping and Pipelines
• 2015 ASME B31.12-2014 Hydrogen Piping and Pipelines (B31.12 - 2014)
• 2011 ASME B31.12-2011 Hydrogen Piping and Pipelines
• 2008 ASME B31.12-2008 Hydrogen Piping and Pipelines

ASME B31.12-2019 -All Parts