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 (No additional details provided)
- Macro-region
- Europe
- Country
- United Kingdom
- Date
- Main component involved?
- H2 Coolant System (Rotating Seal)
- How was it involved?
- Leak & Formation Of A Flammable H2-Air Mixture
- Initiating cause
- Unknown
- Root causes
- Root CAUSE analysis
- INITIATING CAUSE
Hydrogen leak from the power generator coolant system
ROOT 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.
Facility
- Application
- Power Plant
- Sub-application
- unspecified
- Hydrogen supply chain stage
- All components affected
- hydreogen seal,
generator, auxiliary duct - Location type
- Unknown
- Operational condition
Emergency & Consequences
- Number of injured persons
- 0
- Number of fatalities
- 0
- Emergency action
- The safety systems in place worked as designed with no consequence to human or installation
Event Nature
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Presumed ignition source
- Short circuit
- Deflagration
- N
- High pressure explosion
- N
- High voltage explosion
- N
References
- Reference & weblink
Event description provided by HSE, original source confidential
JRC assessment
- Sources categories
- HSE
