Event
- Event ID
- 596
- Quality
- Description
- On the way home, a trailer/truck overturned due to excessive speed, causing the hydrogen bundles to fall. It was transporting two bundles with 30 cartridges each. One of the bundle valves broke, causing gas to leak and ignite. The fusible valve (thermally activated relief devices) of the bundle also activated.
The trailer was returning to the base after delivery, and the cylinders had a residual pressure of approximately of 7 bar. - Event Initiating system
- Classification of the physical effects
- Hydrogen Release and Ignition
- Nature of the consequences
- Fire (No additional details provided)
- Macro-region
- Asia
- Country
- Japan
- Date
- Main component involved?
- Valve (Generic)
- How was it involved?
- Rupture
- Initiating cause
- Impact, Rollover, Crash
- Root causes
- Root CAUSE analysis
- The INITIATING CAUSE was the loss of the load of the trailer.
The ROOT CAUSE is usually attributed in a case of road crashes to human error (too high speed). However, the design of the pallets should be able to protect the (safety) valve system, from the type of mechanical impacts expected from a road incident.
Facility
- Application
- Hydrogen Transport And Distribution
- Sub-application
- CGH2 cylinders truck
- Hydrogen supply chain stage
- Hydrogen Transport (No additional details provided)
- All components affected
- valve (manifold?), TPRD
- Location type
- Unknown
- Operational condition
Emergency & Consequences
- Number of injured persons
- 0
- Number of fatalities
- 0
Event Nature
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Actual pressure (MPa)
- 0.7
- Design pressure (MPa)
- 15-20
- Presumed ignition source
- Not reported
References
- Reference & weblink
High Pressure Gas Accident Cases Database of the KHK (High Pressure Gas Safety Association): <br />
https://www.khk.or.jp/public_information/incident_investigation/hpg_inc… />
(accessed May 2025)The first entry in HIAD was coming from RISCAD, which is now closed.<br />
JRC assessment
- Sources categories
- KHK
