Event
- Event ID
- 284
- Quality
- Description
Hydrogen fire in the compressor-turbine chamber of a power plant. The hydrogen leaked from the generator terminal bushing into unventilated terminal segregated bulbar ducting (this is a duct used for power cables).
Ignition source not stated.- Event Initiating system
- Classification of the physical effects
- Hydrogen Release and Ignition
- Nature of the consequences
- fire
- Macro-region
- Europe
- Country
- United Kingdom
- Date
- Component involved
- H2 coolant system (rotating seal)
- Failure mode
- leak & ignition
- Initiating cause
- unknown
- Root CAUSE analysis
INITIATING CAUSE
Hydrogen leak from the power generator coolant systemROOT CAUSE
The fact hat the leaked hydrogen could access the electrical cable duct seems to point at shortcoming in risk assessment, reflected in shortcomings in design. It could be, however, also be a wrong installation of the components.- 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
hydreogen seal,
generator, auxiliary duct- Process temperature range [C]
- Above ambient temperature (50°C to 100°C)
- 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
References
- Sources categories
- HSE
- Reference & weblink
Event description provided by HSE, original source confidential
