HIAD events | Clean Hydrogen Knowledge Hub

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27/05/1999
United Kingdom

Explosion of a model "hot air" balloon.

Event ID: 309
Quality: 3
Application: Other
Component involved: balloon
Hydrogen supply chain stage: Hydrogen for buoyancy
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

Failure of a LH2 tank without ignition

Event ID: 308
Quality: 3
Application: Non-road vehicles
Component involved: LH2 tank (stationary)
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

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

Failure of a LH2 tank due to over pressure

Event ID: 307
Quality: 3
Application: Non-road vehicles
Component involved: PRD (valve)
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

18/11/1996
United Kingdom

Explosion on a storage vessel of a chemical plant

Event ID: 306
Quality: 2
Application: Chemical 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

19/09/2001
United Kingdom

Sulphuric acid tanker explosion due to unintended hydrogen production

Event ID: 305
Quality: 3
Application: Chemical 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

19/11/1999
United Kingdom

Explosion in a laser cutting plant

Event ID: 304
Quality: 2
Application: Steel and metals industry
Component involved: other
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

Flash fire when disconnection a hydrogen barge

Event ID: 303
Quality: 3
Application: Hydrogen transport and distribution
Component involved: PRD (burst disc)
Hydrogen supply chain stage: Hydrogen transfer
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 on a hydrogen compressor a space centre

Event ID: 302
Quality: 3
Application: Laboratory / R&D
Component involved: PRD (valve)
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: 01/09/2025

10/11/1998
United Kingdom

Explosion in an electrostatic precipitator

Event ID: 301
Quality: 4
Application: Steel and metals 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: 28/02/2009

24/04/1998
United Kingdom

Explosion in coating spray equipment

Event ID: 300
Quality: 4
Application: Steel and metals industry
Component involved: joint/connection (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: 28/02/2009