Extinguishing hydrogen fires is generally avoided due to re-ignition risks, with isolation of the source being the preferred approach.

Most MSDSs recommend not to extinguish a hydrogen fire, rather to try to disconnect the hydrogen source. In which cases is extinguishing recommended?

Situations where extinguishing a hydrogen leak prior to stopping flow is safer are rare. Hydrogen releases have a high potential for inadvertent re-ignition and subsequent explosion. Some vent stacks might be equipped with an extinguishing system, but these often can be more hazardous than allowing a properly designed vent stack to continue to burn until the source is isolated.

FAQ Category
Hazards Analysis
FAQ Keyword
Fire
Extinguish
Re-ignition
Source Isolation
Submission Year
2023
Month
04
Subscribe to Re-ignition

This material was prepared as an account of work sponsored by an agency of the United States Government.
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The portal brings together and enhances the utility of a variety of tools and web-based content on the safety aspects of hydrogen and fuel cell technologies to help inform those tasked with designing, approving or using systems and facilities, as well as those responding to incidents.

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