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Clean Hydrogen Partnership

Accidental production of hydrogen from ma backup battery unit

Event

Event ID
903
Quality
Description
Following a loss of power the failure of a backup battery causes an alarm in a hydrogen storage facility. Consequently, a valve on the purge circuit and 30 m3 of hydrogen is released to the atmosphere.
Event Initiating system
Classification of the physical effects
Unignited Hydrogen Release
Nature of the consequences
Leak No Ignition (No additional details provided)
Macro-region
Europe
Country
France
Date
Root causes
Root CAUSE analysis
INITIATING cause is power failure on a safety circuit.

Facility

Application
Hydrogen Stationary Storage
Sub-application
unspecified
Hydrogen supply chain stage
Hydrogen Storage (No additional details provided)
All components affected
hydrogen storage system
Location type
Unknown
Operational condition
Pre-event occurrences
The incident was initiated by a power failure which triggered of the backup system

Emergency & Consequences

Number of injured persons
0
Number of fatalities
0
Post-event summary
30 m3 of hydrogen released to the atmosphere

Event Nature

Release type
gas
Involved substances (% vol)
H2 100%
Released amount
2.7
Presumed ignition source
No ignition

References

Reference & weblink

Original description in database ARIA<br />
https://www.aria.developpement-durable.gouv.fr/accident/15757/<br />
(accessed September 2020)

JRC assessment