Event
- Event ID
- 516
- Quality
- Description
A lightning strike was observed at the top of the plant ventilation stack.
- Event Initiating system
- Classification of the physical effects
- Hydrogen Release and Ignition
- Nature of the consequences
- Macro-region
- North America
- Country
- United States
- Date
- Component involved
- off-gas system (vent)
- Failure mode
- external explosion (H2-air mixture)
- Initiating cause
- extreme environmental conditions (lightning)
- Root CAUSE analysis
Environmental conditions (lightning) provided an unforeseen ignition source to the air-hydrogen flammable mixture already formed in the vent stack. Also contributing to a ROOT CAUSE is the lack of, or malfunctioning of a electrical grounding system able to neutralise the energy of the lightning.
- Root causes
- Date entry in HIAD
- 28/01/2026
Facility
- Application
- Power plant
- Sub-application
- Nuclear power plant - BWR
- Hydrogen supply chain stage
- Location type
- Open
- Location
- industrial area
- Operational condition
- UNKNOWN
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
- Currency
- US$
- Property loss (onsite)
- 0
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Probable IGNITION SOURCE
- Explosion type
References
- Sources categories
- Zalosh
- Reference & weblink
Table II - Industrial Incidents of Appendix A of Zalosh and Short
COMPARATIVE ANALYSIS OF HYDROGEN FIRE AND EXPLOSION INCIDENTS
Quarterly Report No. 2 for Period December 1, 1977 - February 28, 1978
https://www.osti.gov/biblio/6566131
(accessed September 2020)
