CGA G-5.5 Hydrogen Vent Systems

Geographic Area(s)
North America

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 Explanation

The 5th edition has been published and can be found at

Deadline to submit proposed changes for next edition is 03/04/2026. 

Heat radiation testing at Chart Industries in New Prague, MN date is ongoing. The goal is for the task force to review test results as soon as they are completed.