Event
- Event ID
- 921
- Quality
- Description
- A hydrogen leak occurs at a gas cylinder storage tank park in a nuclear power plant.
Employees locate the origin of the leak on a defective pressure regulator. They isolate the hydrogen release and secure the park.
10 m³ of gas, the equivalent of one and a half cylinders, escaped. - 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
- Main component involved?
- Pressure Regulator
- How was it involved?
- Leak
- Initiating cause
- Unknown
- Root causes
- Unknown (No additional details provided)
- Root CAUSE analysis
- INITIATING cause was the failure of a pressure regulator
Facility
- Application
- Power Plant
- Sub-application
- Nuclear power plant
- Hydrogen supply chain stage
- Hydrogen Storage (No additional details provided)
- All components affected
- hydrogen cylinders, pressure regulator
- Location type
- Open
- Location description
- Industrial Area
- Operational condition
Emergency & Consequences
- Number of injured persons
- 0
- Number of fatalities
- 0
- Post-event summary
- 10 m3 oh hydrogen released to the environment
Lesson Learnt
- Lesson Learnt
The ARIA report does not mention the corrective actions undertaken. The system preventing/mitigation system seemed have worked as designed.
To prevent in an absolute way this type of releases, a better (e.g. more frequent) maintenance and replacement scheme is probably needed.
Event Nature
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount
- 1
- Presumed ignition source
- No ignition
References
- Reference & weblink
Event description in the French database ARIA<br />
https://www.aria.developpement-durable.gouv.fr/accident/51682/<br />
(accessed September 2020)Local News of newspaper Ouest-France of 07/06/2018<br />
https://www.ouest-france.fr/normandie/nucleaire-une-fuite-d-hydrogene-d… />
(accessed September 2020)
JRC assessment
- Sources categories
- ARIA
