FAQ Keywords: Requirements
Outside storage is generally considered safer and is required for large amounts of gas. Stationary storage should be located outside at a safe distance from structures and ventilation intakes, and…
The requirements of the code used for the original construction apply. The piping may meet the requirements of more than one code. In which case, the code used for changing the rating may…
At least three of the ASME B31 piping codes are logical choices:
- ASME B31.1, Power Piping
- ASME B31.3, Process Piping
- ASME B31.12 Hydrogen…
Vent stacks and building ventilation systems are different and should be analyzed/designed differently. NFPA 2 has different location requirements for vent stack and ventilation system outlets.…
Refer to the white paper completed by the HSP for LH2. The same criteria should be applied to
a vent system. See below.
H2Tools Document Library:…
CGA G-5.5 states: All vent stacks shall be grounded and meet the requirements of NFPA 70, National Electrical Code, for integrity and system design and also references NFPA 77, Recommended…
The purity required will be a function of the end use application. There are a variety of grades of hydrogen that can be purchased. The H2 purity will also vary based on source (GH2 or LH2) and…
See H2Tools, Best Practices: Purging, for a description of different purging approaches for hydrogen systems.
Design of vent header lines is critical to the safety of the system. From a process perspective, the pipe design must be sufficient to withstand back pressure, thrust forces from the flow, and…