Event
- Event ID
- 1121
- Quality
- Description
- A LH2 trailer/truck were travelling on a highway when they noticed vapour coming from the trailer cabinet. They exited the highway, parked and opened the trailer cabinet. They found that a nut had vibrated loose on a packing valve. They tightened the bolt and the leak stopped.
- 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?
- Valve (Generic)
- How was it involved?
- Leak & Formation Of A Flammable H2-Air Mixture
- Initiating cause
- Loss Of Tightness (Road Vibrations)
- Root causes
- Root CAUSE analysis
- The INITIAL CAUSE was a leak from a packing valve due to a loose nut.
The ROOT CAUSE is related to the vibration which had caused the component to become loose, and probably also to the improper fixing of the nut during installation.
Facility
- Application
- Hydrogen Transport And Distribution
- Sub-application
- LH2 tanker
- Hydrogen supply chain stage
- Hydrogen Transport (No additional details provided)
- All components affected
- Bolts or Nuts
- Location type
- Open
- Operational condition
Emergency & Consequences
- Number of injured persons
- 0
- Number of fatalities
- 0
- Currency
- US$
- Property loss (onsite)
- 0
- Property loss (offsite)
- 0
- Post-event summary
- None
Event Nature
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount
- 0.26816805450416
- Presumed ignition source
- No ignition
References
- Reference & weblink
Incident E-2008070338 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
