HIAD events | Clean Hydrogen Knowledge Hub

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23/10/2007
United States

Fire in a LH2 Storage Vessel

Event ID: 500
Quality: 4
Application: Non-road vehicles
Component involved: LH2 tank (stationary)
Hydrogen supply chain stage: hydrogen stationary storage
Nature of the consequences: explosion
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 30/10/2025

13/12/1977
United States

Explosions in a nuclear power plant

Event ID: 499
Quality: 5
Application: Power plant
Component involved: off-gas system
Hydrogen supply chain stage: Unintended hydrogen production - radiolysis
Nature of the consequences: explosion
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2017

03/06/1981
United States

CGH2 tube trailer internal explosion

Event ID: 498
Quality: 5
Application: Hydrogen transport and distribution
Component involved: valve (shut-off)
Hydrogen supply chain stage: Hydrogen transfer
Nature of the consequences: explosion followed by a fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 30/10/2025

06/03/1996
United States

Hydrogen Retort Explosion

Event ID: 497
Quality: 3
Application: Laboratory / R&D
Component involved: reactor / oven / furnace / test chamber
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: 01/01/2017

03/02/1994
United States

hydrogen fire produced by radiolysis

Event ID: 496
Quality: 5
Application: Power plant
Component involved: reactor / oven / furnace / test chamber
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: 01/01/2017

29/04/1991
United States

Fire atthe power generator of a power plant

Event ID: 495
Quality: 3
Application: Power plant
Component involved: H2 coolant system
Hydrogen supply chain stage: Hydrogen as coolant
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2017

20/02/1987
United States

Release of hydrogen produced by radiolysis

Event ID: 494
Quality: 5
Application: Power plant
Component involved: valve (generic)
Hydrogen supply chain stage: Hydrogen as coolant
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 01/01/2017

19/03/1984
United States

Fire at a generator of a power plant

Event ID: 493
Quality: 5
Application: Power plant
Component involved: H2 coolant system (pipe)
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: 01/01/2017

24/03/1997
United States

Over-pressurisation of a LH2 tanker

Event ID: 492
Quality: 3
Application: Hydrogen transport and distribution
Component involved: LH2 tank (road tanker)
Hydrogen supply chain stage: hydrogen transport
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 01/01/2025

22/09/1970
United States

Explosion in a battery production plant

Event ID: 491
Quality: 2
Application: Other
Component involved: battery
Hydrogen supply chain stage: Unintended hydrogen production - chemical reaction
Nature of the consequences: explosion
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/01/2026