HIAD events | Clean Hydrogen Knowledge Hub

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30/04/1971
United States

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

Event ID: 258
Quality: 2
Application: Power plant
Component involved: off-gas system (gasket)
Hydrogen supply chain stage: Unintended hydrogen production - radiolysis
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/01/2026

13/06/1969
Japan

Leak from a CGH2 cylinders truck

Event ID: 257
Quality: 2
Application: Hydrogen transport and distribution
Component involved: piping (weld)
Hydrogen supply chain stage: hydrogen transport
Nature of the consequences: leak no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 30/08/2025

21/05/1993
Ukraine

Fire at a generator of a power plant

Event ID: 256
Quality: 3
Application: Power plant
Component involved: H2 coolant system
Hydrogen supply chain stage: Hydrogen as coolant
Nature of the consequences: explosion followed by a fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/02/2009

07/10/1993
France

Fire on the a pipe feed hydrogen to a reactor

Event ID: 255
Quality: 2
Application: Chemical industry
Component involved: pipe (generic)
Hydrogen supply chain stage: hydrogen local supply
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/02/2009

28/01/1994
Japan

Fire on a hydrogen compressor in a refinery

Event ID: 254
Quality: 4
Application: Petrochemical industry
Component involved: CGH2 tank (stationary)
Hydrogen supply chain stage: Hydrogen compression
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 25/10/2024

26/06/1995
France

Explosion in an electrolyser producing chlorine

Event ID: 253
Quality: 3
Application: Chemical industry
Component involved: electrolytic cell
Hydrogen supply chain stage: hydrogen as by-product
Nature of the consequences: explosion
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/02/2009

31/10/1995
France

An explosion on a hydrogenation reactor of a pharmaceutical products plant

Event ID: 252
Quality: 3
Application: Chemical industry
Component involved: flange (gasket)
Hydrogen supply chain stage: Hydrogen as process gas
Nature of the consequences: explosion
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/02/2009

01/02/1996
United States

Explosion in a hydrogen production unit

Event ID: 251
Quality: 2
Application: Petrochemical industry
Component involved: pipeline (generic)
Hydrogen supply chain stage: hydrogen local supply
Nature of the consequences: explosion followed by a fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/02/2009

01/12/1995
United States

CGH2 trailer collision

Event ID: 250
Quality: 3
Application: Hydrogen transport and distribution
Component involved: PRD (valve)
Hydrogen supply chain stage: hydrogen transport
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 25/10/2024

04/05/2006
Netherlands

Release from a hydrogen storage

Event ID: 249
Quality: 5
Application: Laboratory / R&D
Component involved: valve (non-return)
Hydrogen supply chain stage: hydrogen storage
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/02/2009