Event
- Event ID
- 80
- Quality
- Description
During transfer from a tank trailer to a stationary storage tank, a leak developed resulting in an unignited release.
- 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
- hose (trailer)
- Failure mode
- leak, no ignition
- Initiating cause
- unknown
- Root CAUSE analysis
Both INITIATING and ROOT CAUSES are unknown
- Root causes
- Unknown
- Date entry in HIAD
- 20/01/2025
Facility
- Application
- Hydrogen transport and distribution
- Sub-application
- CGH2 tube trailer
- Hydrogen supply chain stage
- All components affected
unknown
- 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
- industrial area
- Operational condition
- Description of the facility/unit/process/substances
DESCRIPTION OF THE UNIT
This trailer unit consisted of 10 tubes.
The capacity data provided by the PHMSA source are not credible and re probably given in the wrong units
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
- Currency
- US$
- Property loss (onsite)
- 0
Lesson Learnt
- Lesson Learnt
Zalosh et al (see references), concluded their analysis of hydrogen transportation accidents till 1978 with the following conclusions:
"Finally, an encouraging aspect of the transportation incident compilation is that 71% of the hydrogen releases did not lead to an ignition. ... The relatively few ignitions may be due to either to lack of ignition sources or to the rapid dispersal of hydrogen into the atmosphere. In any event, the accident data provide further incentive t o transport , transfer and store hydrogen outdoors away from occupied areas."
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Release temperature [°C]
- 25
- Probable IGNITION SOURCE
References
- Sources categories
- Zalosh
- Reference & weblink
Extract from Table III of Appendix A of Zalosh and Short
COMPARATIVE ANALYSIS OF HYDROGEN FIRE AND EXPLOSION INCIDENTS
Quarterly Report No. 2 for Period December 1, 1977 - February 28, 1978
https://www.osti.gov/biblio/6566131
(accessed September 2020)
