Event
- Event ID
- 239
- Quality
- Description
A CGH2 tube trailer had been filled at the production facility and was parked awaiting pickup by the company. A rupture disc failed on one of the cylinders resulting in the release to the atmosphere of 11817 standard cubic feet (30 kg) of gaseous hydrogen. The hydrogen ignited but extinguished itself upon emptying of the tube. An investigation determined that the rupture discs were improperly assembled by the manufacturer.
All rupture discs were then removed from this tube trailer and replaced with new assemblies.- 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 (burst disc)
- Failure mode
- premature activation & venting
- Initiating cause
- wrong installation
- Root CAUSE analysis
INITIATING CAUSE was the opening of a burst disc.
The ROOT CAUSE was the erroneous assembling of the disc system. Nothing is known on the reason for this (a wrong procedure, a mistake of the operator, wrong material set?)- 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
burst disc
- 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
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
- Currency
- US$
- Property loss (onsite)
- 177
- Post-event summary
Only a small material loss: U$ 177.00
- Emergency action
The fire was left extinguishing of its own
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount (kg)
- 30.1
- Release temperature [°C]
- 25
- Probable IGNITION SOURCE
References
- Sources categories
- PHMSA
- Reference & weblink
Incident I-1993061139 of the US Pipeline and Hazardous Materials Safety Administration PHMSA:
https://portal.phmsa.dot.gov/analytics/saw.dll?Portalpages&PortalPath=%…
(accessed September 2024)
