HIAD events | Clean Hydrogen Knowledge Hub

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15/08/1985
Portugal

Explosion from synthesis reactor at a fertilisers production plant.

Event ID: 580
Quality: 3
Application: Chemical industry
Component involved: reactor / oven / furnace / test chamber
Hydrogen supply chain stage: Hydrogen as feedstock
Nature of the consequences: explosion
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2020

17/07/1985
France

Fire from a liquid hydrogen pipe

Event ID: 579
Quality: 2
Application: Unknown
Component involved: joint/connection (generic)
Hydrogen supply chain stage: hydrogen stationary storage
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2020

12/07/1985
Kuwait

Fire at a refinery

Event ID: 578
Quality: 3
Application: Petrochemical industry
Component involved: pipe (generic)
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: 01/01/2020

01/01/1975
United States

Explosion in the off-gas of a nuclear power plant

Event ID: 577
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

27/12/1975
United States

Explosion in a sodium chlorate production plant

Event ID: 576
Quality: 2
Application: Chemical industry
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: 28/01/2026

06/07/1985
Norway

Explosion on a water pump due to hydrogen backflow

Event ID: 575
Quality: 5
Application: Chemical industry
Component involved: flange (gasket)
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

05/11/1975
United States

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

Event ID: 574
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

01/09/1975
United States

Fire on a naphtha reformer

Event ID: 573
Quality: 2
Application: Petrochemical industry
Component involved: flange (generic)
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

29/09/1975
United States

Explosion in a ammonia production plant

Event ID: 572
Quality: 2
Application: Chemical industry
Component involved: pipe (generic)
Hydrogen supply chain stage: Hydrogen as feedstock
Nature of the consequences: explosion
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/01/2026

15/09/2003
United States

Release from a LH2 tanker

Event ID: 571
Quality: 3
Application: Hydrogen transport and distribution
Component involved: PRD (valve)
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: 19/09/2024