Event
- Event ID
- 456
- Quality
- Description
- While travelling on a highway, the driver of a liquid hydrogen tanker noticed vapour coming from under the tank control cabinet. The driver stopped at rest stop and notified the home terminal, which dispatched mechanics to the scene. They found that the pipe of the relief valve was cracked. The tank was switched to alternate pressure safety system and transported for approximately 30 miles to the home terminal without further incident. The piping was repaired and all other trailers belonging to the same series were inspected for similar problem.
- Event Initiating system
- Classification of the physical effects
- Unignited Hydrogen Release
- Nature of the consequences
- Leak No Ignition (No additional details provided)
- Macro-region
- North America
- Country
- United States
- Date
- Main component involved?
- Joint/Connection (Valve)
- How was it involved?
- Rupture
- Initiating cause
- Loss Of Tightness (Road Vibrations)
- Root causes
- Root CAUSE analysis
- The INITIAL CAUSE wasthe failure of the pipe connecting the tank to the pressure relief valve.
Since the failure was attributed to road vibration, the ROOT CAUSE is related to shortcoming in design.
Facility
- Application
- Hydrogen Transport And Distribution
- Sub-application
- LH2 tanker
- Hydrogen supply chain stage
- Hydrogen Transport (No additional details provided)
- All components affected
- pipe, PRV
- Location type
- Open
- Operational condition
Emergency & Consequences
- Number of injured persons
- 0
- Number of fatalities
- 0
- Environmental damage
- 0
- Currency
- US$
- Property loss (onsite)
- 960
- Property loss (offsite)
- 0
- Post-event summary
- 0.7 kg hydrogen were released.
Event Nature
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount
- 0.7
- Presumed ignition source
- No ignition
References
- Reference & weblink
Incident I-1995080699 of the US Pipeline and Hazardous Materials Safety Administration PHMSA: <br />
https://portal.phmsa.dot.gov/analytics/saw.dll?Portalpages&PortalPath=%… />
(accessed September 2024)
JRC assessment
- Sources categories
- PHMSA
