HIAD events | Clean Hydrogen Knowledge Hub

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07/07/1973
Japan

Explosion at a acetylene hydrogenation process

Event ID: 650
Quality: 4
Application: Chemical industry
Component involved: flange (generic)
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

26/10/1973
Japan

Fire on a hydro-desulphurisation column

Event ID: 649
Quality: 3
Application: Petrochemical industry
Component involved: flange (bolts)
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: 05/06/2027

02/02/1973
Japan

Fire on a hydrogenation reactor of a refinery

Event ID: 648
Quality: 3
Application: Petrochemical industry
Component involved: pipe (generic)
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: 01/01/2020

09/06/2002
Japan

Hydrogen fire in an oil refinery

Event ID: 647
Quality: 3
Application: Petrochemical industry
Component involved: pipe (generic)
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: 01/05/2025

19/04/2002
Japan

Syngas explosion at a university laboratory

Event ID: 646
Quality: 3
Application: Laboratory / R&D
Component involved: reactor / oven / furnace / test chamber
Hydrogen supply chain stage: Hydrogen production
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

15/04/2002
Japan

Explosion and fire in a desulphurisation unit of a refinery

Event ID: 645
Quality: 2
Application: Petrochemical industry
Component involved: reactor / oven / furnace / test chamber
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

14/08/1981
Japan

Event ID: 644
Quality: 2
Application: Steel and metals industry
Component involved: chemical storage tank
Hydrogen supply chain stage: Unintended hydrogen production - chemical reaction
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

01/01/1976
United States

Explosion at the off-gas system of a nuclear power plant

Event ID: 643
Quality: 2
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: 28/01/2026

26/11/1985
Japan

Explosion involving H2 in a chemical reactor

Event ID: 642
Quality: 2
Application: Chemical industry
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: 01/01/2020

02/09/1984
Japan

Explosion ina chlor-alkali electrolyser

Event ID: 641
Quality: 3
Application: Chemical industry
Component involved: electrolytic cell (diaphragm)
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: 30/03/2026