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Clean Hydrogen Partnership

Explosion

Event

Event ID
762
Quality
Description
A runaway chemical reaction happened in a reactor containing methanol and a substance to be hydrogenated. A large quantity of hydrogen was released; a balloon containing a borohydride exploded. Two operators are hospitalised, and the workshop roof was blown off.
Event Initiating system
Classification of the physical effects
Hydrogen Release and Ignition
Nature of the consequences
Macro-region
Europe
Country
France
Date
Main component involved?
Reactor / Oven / Furnace / Test Chamber
How was it involved?
Internal Explosion
Initiating cause
Run-Away Reaction
Root causes
Unknown (No additional details provided)

Facility

Application
Chemical Industry
Sub-application
Farmaceutical manufacturing
Hydrogen supply chain stage
All components affected
reactor
Location type
Confined
Location description
Industrial Area
Operational condition
Unknown (No additional details provided)

Emergency & Consequences

Number of injured persons
2
Number of fatalities
0
Post-event summary
Two operators were hospitalized, the roof of the workshop was blown.

Event Nature

Release type
gas
Involved substances (% vol)
H2,
CH3OH,
B2H6
Presumed ignition source
Run-away reaction

References

Reference & weblink

ARIA data base event no. 15140<br />
https://www.aria.developpement-durable.gouv.fr/accident/15140/<br />
(accessed October 2025)

JRC assessment