Event
- Event ID
- 182
- Quality
- Description
The incident occurred in the turbine-generator hall of a nuclear power plant. Hydrogen leaked from the alternator and ignited.
The hydrogen line was purged to stop the leak. The plant employees were able to stop the fire in one hour. An assessment of the concentration of hydrogen in the hall did not reveal the presence of an explosive mixture.- Event Initiating system
- Classification of the physical effects
- Hydrogen Release and Ignition
- Nature of the consequences
- fire
- Macro-region
- Europe
- Country
- France
- Date
- Component involved
- H2 coolant system
- Failure mode
- leak & ignition
- Initiating cause
- unknown
- Root causes
- Unknown
- Date entry in HIAD
- 28/02/2009
Facility
- Application
- Power plant
- Sub-application
- nuclear power plant
- Hydrogen supply chain stage
- All components affected
alternator, turbine-generator hall
- Process temperature range [C]
- Above ambient temperature (50°C to 100°C)
- Location type
- Confined
- Location
- industrial area
- Operational condition
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
- Property loss (onsite)
- 0
- Post-event summary
Explosivity measurements were made in the whole power plant : no anomaly were found.
- Emergency action
The event occurred in the non-nuclear zone of he power plant. The corresponding part of the hydrogen pipe was isolated and purged and the fire extinguished after consumption of all the remaining hydrogen within one hour.
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Release temperature [°C]
- 25
- Probable IGNITION SOURCE
References
- Sources categories
- ARIA
- Reference & weblink
Event description in the French database ARIA
https://www.aria.developpement-durable.gouv.fr/accident/24741/
(accessed January 2023)
