Event
- Event ID
- 279
- Quality
- Description
Explosion in generator area, thought to be hydrogen leak as a result of radial lead seal failure. Extensive plant damage.
- Event Initiating system
- Classification of the physical effects
- Hydrogen Release and Ignition
- Nature of the consequences
- Macro-region
- Europe
- Country
- United Kingdom
- Date
- Component involved
- H2 coolant system (rotating seal)
- Failure mode
- leak
- Initiating cause
- unknown
- Root CAUSE analysis
The reason for the radial lead seal failure is not given. Root cause also unknown.
- Root causes
- Date entry in HIAD
- 28/02/2009
Facility
- Application
- Power plant
- Sub-application
- unspecified power plant
- Hydrogen supply chain stage
- All components affected
H2 coolant loop
- Process temperature range [C]
- Above ambient temperature (50°C to 100°C)
- Process pressure range [MPa]
- low to medium pressure (below 2 MPa)
- Location type
- Unknown
- Location
- unknown
- Operational condition
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Release temperature [°C]
- 25
- Probable IGNITION SOURCE
- Explosion type
- Detonation
References
- Sources categories
- HSE
- Reference & weblink
Event description provided by HSE, original source confidential
