Commonly used in overland pipelines (Part PL), carbon steels must feature low carbon equivalents, refined grain structures, and strict hardness limits (typically ≤22is less than or equal to 22 HV) to minimize susceptibility to cracking. Prohibited or Restricted Materials
What is the and temperature of your system?
Details requirements for pressure design of components (elbows, tees, valves), flexibility analysis, and support systems. asme b 31.12 pdf
As the world shifts toward a hydrogen economy, mitigating the risks associated with this element—such as hydrogen embrittlement, high flammability, and wide explosive ranges—is crucial. ASME B31.12 provides the definitive blueprint to ensure that both gaseous and liquid hydrogen systems are engineered to withstand these unique hazards. The Two Distinct Sections of the Code
: Contains definitions and cross-referenced requirements for materials, welding, inspection, and maintenance common to all sections. Commonly used in overland pipelines (Part PL), carbon
Prior to operation, systems must be pressure tested. While hydrostatic testing (using water) is common, pneumatic testing (using inert gas) or helium mass spectrometer leak testing is often utilized because hydrogen can escape through leaks that water cannot pass through.
Includes formulas for pressure design of components, taking into account fatigue and thermal expansion. Fabrication and Welding: As the world shifts toward a hydrogen economy,
The use of ASME B31.12 provides several benefits to stakeholders, including:
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.