HIAD events | Clean Hydrogen Knowledge Hub

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23/02/2004
Israel

Explosion caused by hydrogen tank piercing

Event ID: 519
Quality: 2
Application: Chemical industry
Component involved: CGH2 cylinder(s)
Hydrogen supply chain stage: hydrogen storage
Nature of the consequences: explosion
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2020

01/01/1973
United States

Fire on a desulphurisation unit of a refinery

Event ID: 518
Quality: 2
Application: Petrochemical industry
Component involved: flange (gasket)
Hydrogen supply chain stage: Hydrogen as process gas
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/01/2026

01/01/1973
United States

Fire on a hydrogen line of a naphtha reformer

Event ID: 517
Quality: 2
Application: Petrochemical industry
Component involved: pipe (weld)
Hydrogen supply chain stage: Hydrogen production
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/01/2026

01/01/1973
United States

Off-gas explosion at a nuclear power plant

Event ID: 516
Quality: 2
Application: Power plant
Component involved: off-gas system (vent)
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: 28/01/2026

03/02/1996
United States

Explosion at the hydrogen unit of a refinery

Event ID: 515
Quality: 4
Application: Hydrogen production
Component involved: pipe (generic)
Hydrogen supply chain stage: Hydrogen production
Nature of the consequences: explosion
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2020

09/08/1999
United Kingdom

Toxic and flammable gas release from steels production plant

Event ID: 514
Quality: 5
Application: Steel and metals industry
Component involved: valve (generic)
Hydrogen supply chain stage: Hydrogen as process gas
Nature of the consequences: leak no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 01/01/2020

01/01/1973
United States

Off-gas explosion at a nuclear power plant

Event ID: 513
Quality: 2
Application: Power plant
Component involved: off-gas system (pipe)
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: 28/01/2026

01/01/1973
United States

Off-gas explosion at a nuclear power plant

Event ID: 512
Quality: 2
Application: Power plant
Component involved: off-gas system (pipe)
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: 28/01/2026

07/08/2002
United States

Explosion of pressurised tank during oxygen production

Event ID: 511
Quality: 2
Application: Other
Component involved: chemical storage tank
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: 01/01/2020

31/03/1994
France

Accidental hydrogen formation and explosion at a nuclear reactor

Event ID: 510
Quality: 3
Application: Power plant
Component involved: reactor / oven / furnace / test chamber
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: 01/01/2020