Event
- Event ID
- 1125
- Quality
- Description
- An empty LH2 trailer was returning to the basis, when the driver noticed a significant pressure increase. The driver stopped the truck in a non-heavily populated area and performed a venting to reduce the pressure. The pressure value went down to 9 psi (0.6 bar) and stabilised at 14 psi (0.9 bar).
After which, the trailer could return to basis without further incident. - 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?
- Lh2 Tanker
- How was it involved?
- Manual Venting
- Initiating cause
- Over-Pressurisation (Wrong Operation)
- Root causes
- Unknown (No additional details provided)
- Root CAUSE analysis
- The INITIAL CAUSE was over-pressurisation of the LH2 tank, which triggered the need of a venting.
Facility
- Application
- Hydrogen Transport And Distribution
- Sub-application
- LH2 tanker
- Hydrogen supply chain stage
- Hydrogen Transport (No additional details provided)
- All components affected
- Tank Shell
- Location type
- Open
- Operational condition
- Pre-event occurrences
- The nominal capacity of the trailer was 1300 gallons (3500 kg of LH2)
Emergency & Consequences
- Number of injured persons
- 0
- Number of fatalities
- 0
- Environmental damage
- 0
- Currency
- US$
- Property loss (onsite)
- 0
- Property loss (offsite)
- 0
- Post-event summary
- Approximately 135 kg of LH2 were lost.
Event Nature
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount
- 136.22937168812
- Presumed ignition source
- No ignition
References
- Reference & weblink
Incident E-2012070336 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
