Event
- Event ID
- 292
- Quality
- Description
After the filled hydrogen gas cylinders were unloaded onto the quay, the weather worsened and high waves caused the containers to break apart, and the cylinders were lost to the sea.
- Event Initiating system
- Classification of the physical effects
- n.a.
- Nature of the consequences
- n.a.
- Macro-region
- Asia
- Country
- Japan
- Date
- Component involved
- CGH2 cylinder(s)
- Failure mode
- rupture, no ignition
- Initiating cause
- impact, rollover, crash
- Root CAUSE analysis
The INITIATING CAUSE was the bad condition at sea and on the quay. On ROOT CAUSE can only be speculated. A weak container design? A decision to proceed with the unloading operation despite the adverse weather?
- Root causes
- Date entry in HIAD
- 30/08/2025
Facility
- Application
- Hydrogen transport and distribution
- Sub-application
- CGH2 cylinders truck
- Hydrogen supply chain stage
- All components affected
cylinders
- Process temperature range [C]
- ambient temperature (-50°C to +50°C)
- Process pressure range [MPa]
- medium to high pressure (10 to 50 MPa)
- Location type
- Open
- Location
- highway or similar
- Operational condition
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
- Post-event summary
none
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount (kg)
- 0
- Release temperature [°C]
- 25
- Probable IGNITION SOURCE
References
- Sources categories
- KHK
- Reference & weblink
High Pressure Gas Accident Cases Database of the KHK (High Pressure Gas Safety Association):
https://www.khk.or.jp/public_information/incident_investigation/hpg_inc…
(accessed May 2025)
