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Clean Hydrogen Partnership

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
Component involved
reactor / oven / furnace / test chamber
Failure mode
internal explosion
Initiating cause
run-away reaction
Root causes
Date entry in HIAD
01/01/2020

Facility

Application
Chemical industry
Sub-application
pharmaceuticals production
Hydrogen supply chain stage
All components affected

hydrogenation reactor

Process temperature range [C]
unknown
Process pressure range [MPa]
unknown
Location type
Confined
Location
industrial area
Operational condition
UNKNOWN

Emergency & Consequences

Number of fatalities
0
Number of injured persons
2
Post-event summary

Two operators were hospitalized, the roof of the workshop was blown.

In-depth data

Release type
gas
Involved substances (% vol)
H2,
CH3OH,
B2H6
Probable IGNITION SOURCE
Explosion type

References

Sources categories
ARIA
Reference & weblink

ARIA data base event no. 15140

https://www.aria.developpement-durable.gouv.fr/accident/15140/

(accessed October 2025)