Event
- Event ID
- 250
- Quality
- Description
A CGH2 tube-trailer lost control, left the roadway, and went into a 1 1/2 foot ditch, traveling approx. 50 feet in the ditch. The soft ground in the ditch caused the trailer to over turn, sliding approx. 10 feet and causing damage to 5 individual tube safety valves. The escaping hydrogen ignited, assumed due to the friction of the gas flow with the wall of valves. The fire engulfed the trailer, causing a total loss of the tractor and severe damage to the trailer. The total hydrogen content of the trailer was consumed by the fire.
- Event Initiating system
- Classification of the physical effects
- Hydrogen Release and Ignition
- Nature of the consequences
- fire
- Macro-region
- North America
- Country
- United States
- Date
- Component involved
- PRD (valve)
- Failure mode
- rupture & ignition
- Initiating cause
- impact, rollover, crash
- Root CAUSE analysis
INITIATING cause was a traffic accident. In absence of information on drivers and driver behaviours, the ROOT CAUSE can be attributed generically to a human error (wrong manoeuvre)
- Root causes
- Date entry in HIAD
- 25/10/2024
Facility
- Application
- Hydrogen transport and distribution
- Sub-application
- CGH2 tube trailer
- Hydrogen supply chain stage
- All components affected
Auxiliary Valve
- Process temperature range [C]
- ambient temperature (-50°C to +50°C)
- Process pressure range [MPa]
- medium to high pressure (10 to 50 MPa)
- Location type
- Open
- Location
- highway or similar
- Operational condition
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
- Currency
- US$
- Property loss (onsite)
- 103.128
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount (kg)
- 127
- Release temperature [°C]
- 25
- Probable IGNITION SOURCE
References
- Sources categories
- PHMSA
- Reference & weblink
Incident I-1995120982 of the US Pipeline and Hazardous Materials Safety Administration PHMSA:
https://portal.phmsa.dot.gov/analytics/saw.dll?Portalpages&PortalPath=%…
(accessed September 2024)
