Publication Details

[G-5.5] Hydrogen Vent Systems


Title Hydrogen Vent Systems
Edition 3
Published March, 2014
Status Available to the public
Size 16 pages
Publisher CGA
Special Attributes Referenced by NFPA
Committee Hydrogen Technology


This publication presents design guidelines for hydrogen vent systems used in gaseous and liquid hydrogen systems at user sites and provides recommendations for safe operation of these vents. It begins at the discharge port of safety devices and other components that control the release of hydrogen and ends at the point where hydrogen concentration in the atmosphere is below the lower flammable limits.

Pressure relief devices (PRDs) for cylinders and tube trailers required by U.S. Department of Transportation (DOT) in Title 49 of the U.S Code of Federal Regulations (49 CFR) are not covered in the scope of this publication.


Category Gases     Standards & Guidelines
Keywords cryogenic liquids  |  cryogenics  |  Gaseous hydrogen  |  hydrogen  |  hydrogen vent systems  |  vent systems
Related G-5  |  G-5.4  |  H-5  |  PS-46

Access Publication:

You may be entitled to free or discounted publications. Please login or register before shopping
To download and read this publication, you must have the following software installed:
Purchase E-Pub
Purchase Hard Copy
View Table of Contents (free)
Member Price: $38
Subscriber Price: $38
Non-Member Price: $69
Member E-Pub Price: $0
Subscriber E-Pub Price: $0
Non-Member E-Pub Price: $69