CGA Publication G5.5
    Hydrogen Vent Systems
     United States

Organization Compressed Gas Association

Identification CGA G-5.5
Hydrogen Vent Systems



Presents design guidelines for hydrogen vent systems for gaseous and liquid hydrogen installations at consumer sites, and provides recommendations for their safe operation. This standard should be a useful reference for personnel who design, install, and maintain hydrogen vent systems.


Status Second edition published April 2004.  Reaffirmed May 2007.  Available at