HIAD events | Clean Hydrogen Knowledge Hub

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19/01/1976
United States

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

Event ID: 682
Quality: 4
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

09/01/1992
United Kingdom

Explosion at a catalytic cracking unit of a refinery

Event ID: 681
Quality: 5
Application: Petrochemical 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

28/08/1992
China

Hydrogen cylinders explosion at a power plant

Event ID: 680
Quality: 4
Application: Power plant
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

08/10/1992
United States

Explosion in a hydrogenation unit of a refinery

Event ID: 679
Quality: 3
Application: Petrochemical industry
Component involved: pipe (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

30/01/1974
United States

Explosion in a SMR unit of an ammonia plant

Event ID: 678
Quality: 4
Application: Chemical industry
Component involved: pipe (weld)
Hydrogen supply chain stage: Hydrogen production
Nature of the consequences: explosion
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/01/2026

10/02/1971
United States

Fire on a hydrotreater of a refinery

Event ID: 677
Quality: 4
Application: Petrochemical industry
Component involved: heat exchanger (pipe)
Hydrogen supply chain stage: hydrogen as by-product
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/01/2026

11/11/1977
United States

Fire in the vent stack of a metal treatment plant

Event ID: 676
Quality: 2
Application: Electrical, electronics and micro-electronics industry
Component involved: reactor / oven / furnace / test chamber
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

01/06/1993
United States

Hydrogen compressor explosion and fire at a refinery.

Event ID: 675
Quality: 3
Application: Petrochemical industry
Component involved: compressor / booster / pump (valve)
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: 01/01/2021

01/08/1993
Netherlands

Fire - hydrogen

Event ID: 674
Quality: 2
Application: Chemical industry
Component involved: unknown
Hydrogen supply chain stage: Hydrogen as feedstock
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2021

28/10/1996
United States

Explosion in a electrical products plant

Event ID: 673
Quality: 2
Application: Electrical, electronics and micro-electronics 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