Event
- Event ID
- 1122
- Quality
- Description
A LH2 trailer was delivering liquid hydrogen to a customer. Once finished the delivery, the driver noticed a leak on the piping between the trailer and vent valve inside the side cabinet. The trailer was stabilised and returned to origin for repair.
- 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
- piping (tube trailer)
- Failure mode
- rupture, no ignition
- Initiating cause
- material degradation (generic)
- Root CAUSE analysis
The INITIAL CAUSE was a leak on the connection between the trailer (tank) and the vent line.
The ROOT CAUSE is related to ageing or another form of degradation of the pipe. However, it is not to known if this was related to lack of maintenance, ill-choice of materials, or to a previous event causing mechanical damage.- Root causes
- Unknown
- Date entry in HIAD
- 09/09/2024
Facility
- Application
- Hydrogen transport and distribution
- Sub-application
- LH2 tanker
- Hydrogen supply chain stage
- All components affected
pipe
- 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
- Pre-event occurrences
The drive had just terminated the LH2 transfer from the trailer to the stationary tank.
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
- Currency
- US$
- Property loss (onsite)
- 0
- Post-event summary
No injury, only a loss of hydrogen (21 kg)
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount (kg)
- 21.453444360333
- Probable IGNITION SOURCE
References
- Sources categories
- PHMSA
- Reference & weblink
Incident E-2011050327 of the US Pipeline and Hazardous Materials Safety Administration PHMSA:
https://portal.phmsa.dot.gov/analytics/saw.dll?Portalpages&PortalPath=%…
(accessed September 2024)
