HIAD events | Clean Hydrogen Knowledge Hub

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16/09/1999
United Kingdom

Release from a hydrogen compressor in a refinery

Event ID: 329
Quality: 2
Application: Chemical industry
Component involved: joint/connection (generic)
Hydrogen supply chain stage: hydrogen on-site supply
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 28/02/2009

01/01/1950 - 31/12/1974
United States

Fire on a LH2 tank under maintenance

Event ID: 328
Quality: 3
Application: Non-road vehicles
Component involved: PRD (burst disc)
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: 30/10/2025

01/01/1950 - 31/12/1974
United States

Fire on a LH2 cryostat

Event ID: 327
Quality: 3
Application: Non-road vehicles
Component involved: LH2 tank (stationary, small)
Hydrogen supply chain stage: Hydrogen as fuel
Nature of the consequences: fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 30/10/2025

01/01/1950 - 31/12/1974
United States

Explosion during testing of a LH2 pump

Event ID: 326
Quality: 3
Application: Non-road vehicles
Component involved: LH2 pump
Hydrogen supply chain stage: Hydrogen as fuel
Nature of the consequences: explosion followed by a fire
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 30/10/2025

01/01/1950 - 31/12/1974
United States

Explosion in a LH2 container

Event ID: 325
Quality: 2
Application: Laboratory / R&D
Component involved: LH2 tank (stationary, small)
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: 30/10/2025

26/09/1997
United Kingdom

Release from LH2 hydrogen storage

Event ID: 324
Quality: 3
Application: Electrical, electronics and micro-electronics industry
Component involved: PRD (valve)
Hydrogen supply chain stage: hydrogen stationary storage
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 28/02/2009

01/01/1950 - 31/12/1974
United States

LH2 release and explosion from a failed weld

Event ID: 323
Quality: 3
Application: Non-road vehicles
Component involved: piping (weld)
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: 30/10/2025

01/01/1950 - 31/12/1974
United States

Leak from a cryogenic tank

Event ID: 322
Quality: 3
Application: Non-road vehicles
Component involved: flange (bolts)
Hydrogen supply chain stage: hydrogen stationary storage
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 30/10/2025

10/12/2001
United Kingdom

Explosion from unintentional hydrogen production

Event ID: 321
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
Classification of the physical effects: Hydrogen Release and Ignition
Date entry in HIAD: 28/02/2009

01/01/1950 - 31/12/1974
United States

Explosion in a LH2 tank

Event ID: 320
Quality: 3
Application: Non-road vehicles
Component involved: LH2 tank (stationary, small)
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: 30/10/2025