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Clean Hydrogen Partnership

Fire in the off-gas system of a nuclear power plant

Event

Event ID
258
Quality
Description

Hydrogen leaked from an off-gas system, followed by a fire. The leak was due to a faulty gasket.

Event Initiating system
Classification of the physical effects
Hydrogen Release and Ignition
Nature of the consequences
fire
Macro-region
North America
Country
United States
Date
Component involved
off-gas system (gasket)
Failure mode
leak & ignition
Initiating cause
material degradation (generic)
Root causes
Unknown
Date entry in HIAD
28/01/2026

Facility

Application
Power plant
Sub-application
Nuclear power plant
Hydrogen supply chain stage
Process temperature range [C]
Above ambient temperature (50°C to 100°C)
Location type
Confined
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 mixture
Involved substances (% vol)
H2,
O2
Release temperature [°C]
25
Probable IGNITION SOURCE

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)