HIAD events | Clean Hydrogen Knowledge Hub

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01/06/1965
United States

Explosion at a chlorine production plant

Event ID: 712
Quality: 4
Application: Chemical industry
Component involved: electrolytic cell (header)
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: 28/01/2026

18/01/1992
United States

Explosion at off-gas recombiner of a nuclear power plant

Event ID: 711
Quality: 3
Application: Power plant
Component involved: valve (generic)
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: 01/01/2020

22/04/2004
South Korea

Explosion of a hydrogen tank

Event ID: 710
Quality: 2
Application: Chemical industry
Component involved: CGH2 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: 01/01/2020

13/07/2007
United States

FCEV road collision

Event ID: 709
Quality: 4
Application: Road vehicles
Component involved: FCEV
Hydrogen supply chain stage: Hydrogen as fuel
Nature of the consequences: near miss
Classification of the physical effects: No Hydrogen Release
Date entry in HIAD: 30/12/2025

22/03/1989
Italy

Fire in a refinery

Event ID: 708
Quality: 2
Application: Petrochemical industry
Component involved: unknown
Hydrogen supply chain stage: Hydrogen as process gas
Nature of the consequences: explosion followed by a fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2020

05/10/1991
Germany

Explosion due to a release from a hydrogen storage tank

Event ID: 707
Quality: 5
Application: Chemical industry
Component involved: CGH2 tank (stationary)
Hydrogen supply chain stage: hydrogen stationary storage
Nature of the consequences: explosion followed by a fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2020

24/02/2009
United States

FCEV driving away with the dispenser hose

Event ID: 706
Quality: 2
Application: Road vehicles
Component involved: dispenser (breakaway)
Hydrogen supply chain stage: Hydrogen transfer
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 30/12/2025

01/01/2007
United States

Nozzle disconnection difficulty

Event ID: 705
Quality: 2
Application: Road vehicles
Component involved: dispenser (nozzle)
Hydrogen supply chain stage: Hydrogen transfer
Nature of the consequences: near miss
Classification of the physical effects: No Hydrogen Release
Date entry in HIAD: 30/12/2025

11/06/2007
United States

Hose rupture at a HRS

Event ID: 704
Quality: 2
Application: Hydrogen refuelling station
Component involved: dispenser (hose)
Hydrogen supply chain stage: Hydrogen transfer
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 30/12/2025

01/10/1990
United States

Near miss at a nuclear material production and storage facility

Event ID: 703
Quality: 3
Application: Power plant
Component involved: chemical storage tank (waste)
Hydrogen supply chain stage: Unintended hydrogen production - chemical reaction
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 01/01/2020