Mandates radiographic (RT) or ultrasonic testing (UT) after post-weld heat treatment for low-alloy steels.
The standard is divided into two primary industrial applications:
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Are you designing an or a cross-country pipeline ?
The standard is divided into distinct sections targeting different parts of the hydrogen supply chain. It is broadly split into a general section followed by two main parts: 1. Part IP: Industrial Piping asme b 31.12 pdf
The standard is organized into three primary parts to address different operational environments: ASME B31.12 Hydrogen Piping and Pipelines | H2tools
The code provides limited but specific rules for polymers and composites, which are increasingly used in low-pressure distribution and fueling station hoses. Inspection, Examination, and Testing
Applies conservative design factors (safety margins) to reduce the allowable stress levels in the pipe wall.
The exact timeline is 2026 for the B31.3 and B31.8 revisions. Mandates radiographic (RT) or ultrasonic testing (UT) after
Covers fundamental aspects including materials, welding, heat treating, forming, testing, inspection, examination, operation, and maintenance.
ASME B31.12:2022 provides a comprehensive framework for designing, fabricating, and inspecting hydrogen piping and pipelines. The standard offers several benefits, including improved safety, compliance with regulations, and increased efficiency. While there are challenges and limitations, the use of ASME B31.12 is essential for ensuring the safe and reliable operation of hydrogen infrastructure.
Do not rely on second-hand copies. Do not assume older codes apply. Invest in the official standard, study its embrittlement criteria, and design for hydrogen’s unique behavior. It is the only way to build infrastructure that is both innovative and safe.
Governs cross-country pipelines used to transport hydrogen over long distances from production sites to end-users. It is broadly split into a general section
Leaks are the primary cause of hydrogen fires. ASME B31.12 heavily restricts the types of joints allowed in hydrogen service:
Published by the American Society of Mechanical Engineers (ASME), is a part of the ASME B31 Code for Pressure Piping. It was created to address the specific needs of hydrogen infrastructure, covering both piping (industrial applications) and pipelines (transmission). Scope: Covers gaseous and liquid hydrogen service.
If you are searching for the , you are likely looking for the specific code requirements for designing, constructing, and maintaining hydrogen systems. Below is an overview of the standard, what it covers, and how to access it.