Event
- Event ID
- 1235
- Quality
- Description
- A large hydrogen vapor cloud was released from the base of a bulk hydrogen storage tank, at a speciality gas company. The cloud found an ignition source producing a large fireball, shook windows in the surrounding area, and resulted in minor injuries to one employee.
- Event Initiating system
- Classification of the physical effects
- Hydrogen Release and Ignition
- Nature of the consequences
- Macro-region
- North America
- Country
- United States
- Date
- Main component involved?
- Cgh2 Vessel (Stationary)
- How was it involved?
- Leak & Formation Of A Flammable H2-Air Mixture
- Initiating cause
- Unknown
- Root causes
- Unknown (No additional details provided)
Facility
- Application
- Hydrogen Stationary Storage
- Sub-application
- CGH2 storage
- Hydrogen supply chain stage
- Hydrogen Storage (No additional details provided)
- Location type
- Open
- Operational condition
- Unknown (No additional details provided)
Emergency & Consequences
- Number of injured persons
- 1
- Number of fatalities
- 0
- Environmental damage
- 0
- Property loss (offsite)
- 0
- Post-event summary
- One company worker sustained minor injuries and was treated at the scene.
The blast was powerful enough to be felt and heard miles away, shaking buildings and breaking windows in the vicinity.
Event Nature
- Presumed ignition source
- Not reported
References
- Reference & weblink
Milwaukee Journal Sentinel<br />
https://eu.jsonline.com/story/communities/waukesha/news/waukesha/2019/1… 2025)News by abc7chicago<br />
https://abc7chicago.com/5751671/<br />
(accessed December 2025)
JRC assessment
- Sources categories
- News
