HIAD events | Clean Hydrogen Knowledge Hub

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01/01/1976
United Kingdom

Near miss on a flange of a heat exchanger in a refinery

Event ID: 600
Quality: 2
Application: Petrochemical industry
Component involved: heat exchanger (generic)
Hydrogen supply chain stage: Hydrogen as process gas
Nature of the consequences: near miss
Classification of the physical effects: No Hydrogen Release
Date entry in HIAD: 01/01/2020

20/01/1976
United Kingdom

Event ID: 599
Quality: 2
Application: Chemical industry
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

30/05/1992
Japan

Explosion in a chemical plant

Event ID: 598
Quality: 5
Application: Chemical industry
Component involved: chemical storage tank
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

14/04/1994
Japan

Fire from a dehydrogenation reactor

Event ID: 597
Quality: 4
Application: Chemical industry
Component involved: flange (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

27/06/1995
Japan

CGH2 cylinders pallets falling from a trailer

Event ID: 596
Quality: 3
Application: Hydrogen transport and distribution
Component involved: valve (generic)
Hydrogen supply chain stage: hydrogen transport
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2025

09/06/1976
United States

Explosion at a sodium chlorate production unit

Event ID: 595
Quality: 2
Application: Chemical industry
Component involved: electrolytic cell
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

11/05/1995
Japan

Event ID: 594
Quality: 2
Application: Non-road vehicles
Component involved: flange (gasket)
Hydrogen supply chain stage: Hydrogen as fuel
Nature of the consequences: explosion
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2025

17/01/1995
Japan

Release from a hydrogen production plant

Event ID: 593
Quality: 2
Application: Unknown
Component involved: joint/connection (threaded)
Hydrogen supply chain stage: Hydrogen production
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 01/05/2025

29/08/1997
Japan

Fire from a CGH2 cylinder

Event ID: 592
Quality: 2
Application: Unknown
Component involved: valve (generic)
Hydrogen supply chain stage: Hydrogen transfer
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/01/2020

12/06/1997
Japan

Fire from a gauge connection on a hydrogen purification unit

Event ID: 591
Quality: 2
Application: Chemical industry
Component involved: joint/connection (threaded)
Hydrogen supply chain stage: hydrogen on-site supply
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 01/05/2025