HIAD events | Clean Hydrogen Knowledge Hub

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11/10/2024
France

Explosion in a chemicals plant

Event ID: 1209
Quality: 3
Application: Chemical industry
Component involved: valve (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: 30/09/2025

06/10/2015
Japan

leak from a dispenser of a mobile HRS

Event ID: 1208
Quality: 4
Application: Hydrogen refuelling station
Component involved: dispenser (gasket)
Hydrogen supply chain stage: Hydrogen transfer
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 30/09/2025

23/05/2016
Japan

leak from a dispenser of a HRS

Event ID: 1207
Quality: 4
Application: Hydrogen refuelling station
Component involved: valve (generic)
Hydrogen supply chain stage: Hydrogen transfer
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 30/09/2025

04/06/2020
Japan

Hydrogen leak from a threaded joint

Event ID: 1206
Quality: 4
Application: Hydrogen refuelling station
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: 30/08/2025

19/04/2020
Japan

Hydrogen accidental release into a compressor room

Event ID: 1205
Quality: 5
Application: Hydrogen refuelling station
Component involved: compressor / booster / pump (valve)
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: 30/08/2025

12/09/2019
Japan

leak from a hose when refuelling a forklift

Event ID: 1204
Quality: 5
Application: Hydrogen refuelling station
Component involved: dispenser (hose)
Hydrogen supply chain stage: Hydrogen transfer
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 30/08/2025

24/10/2018
Japan

Leaks from a hydrogen compressor

Event ID: 1203
Quality: 5
Application: Hydrogen refuelling station
Component involved: compressor / booster / pump (seal)
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: 30/08/2025

10/08/2018
Japan

Leak at a filling hose of a hydrogen dispenser

Event ID: 1202
Quality: 4
Application: Hydrogen refuelling station
Component involved: dispenser (hose)
Hydrogen supply chain stage: Hydrogen transfer
Nature of the consequences: release, no ignition
Classification of the physical effects: Unignited Hydrogen Release
Date entry in HIAD: 30/08/2025

21/06/2018
Japan

Fire from a flange of a desulphurisation unit

Event ID: 1201
Quality: 3
Application: Petrochemical industry
Component involved: flange (gasket)
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: 30/08/2025

27/10/2017
Japan

Leak from a hydrogen compressor

Event ID: 1200
Quality: 4
Application: Laboratory / R&D
Component involved: compressor / booster / pump (seal)
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: 30/08/2025