Event
- Event ID
- 105
- Quality
- Description
A faulty rupture disc failed prematurely releasing 750 cubic feet of hydrogen (1.8 kg).
- Event Initiating system
- Classification of the physical effects
- Unignited Hydrogen Release
- Nature of the consequences
- release, no ignition
- Macro-region
- North America
- Country
- United States
- Date
- Component involved
- PRD (burst disc)
- Failure mode
- premature activation
- Initiating cause
- unknown
- Root CAUSE analysis
The INITIATING CAUSE was the premature rupturing of the burst disk.
ROOT CAUSE is unknown.
- Root causes
- Date entry in HIAD
- 20/01/2025
Facility
- Application
- Hydrogen transport and distribution
- Sub-application
- H2 delivery to customers
- Hydrogen supply chain stage
- All components affected
LH2 road tanker
- Process temperature range [C]
- cryogenic temperature (below -50°C)
- Process pressure range [MPa]
- low to medium pressure (below 2 MPa)
- Location type
- Open
- Location
- industrial area
- Operational condition
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
- Currency
- US$
- Property loss (onsite)
- 22.000
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 to transport , transfer and store hydrogen outdoors away from occupied areas."
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount (kg)
- 1.8
- 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)
