Event
- Event ID
- 361
- Quality
- Description
A full liquid hydrogen tanker was parked off highway to permit drivers to eat and switch seats. While at site, high pressure caused safety devices to function. No fire or damage.
- Event Initiating system
- Classification of the physical effects
- Unignited Hydrogen Release
- Nature of the consequences
- leak no ignition
- Macro-region
- North America
- Country
- United States
- Date
- -
- Component involved
- PRD (burst disc)
- Failure mode
- correct activation & venting
- Initiating cause
- over-pressurisation (excessive boil-off)
- Root CAUSE analysis
INITIATING CAUSE: disc malfunction, although outer vacuum appeared to be deteriorating. A new disc was installed and the trip continued.
ROOT or CONTRIBUTION CAUSE
Unclear what the pressure increased was caused by.- Root causes
- Date entry in HIAD
- 16/11/2024
Facility
- Application
- Hydrogen transport and distribution
- Sub-application
- LH2 tanker
- Hydrogen supply chain stage
- All components affected
burst disc
- Process temperature range [C]
- cryogenic temperature (below -50°C)
- Process pressure range [MPa]
- low to medium pressure (below 2 MPa)
- Location type
- Open
- Location
- highway or similar
- Operational condition
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
- Property loss (onsite)
- 0
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Probable IGNITION SOURCE
References
- Sources categories
- ORDIN
- Reference & weblink
Mishap no 9 in
P. L. Ordin, Review of hydrogen accidents and incidents in NASA operations, 1974, NASA TM X-71565
https://ntrs.nasa.gov/citations/19740020344
