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 (No additional details provided)
- Macro-region
- North America
- Country
- United States
- Date
- Main component involved?
- Prd (Burst Disc)
- How was it involved?
- Premature Activation
- Initiating cause
- Wrong Installation
- Root causes
- 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?)
Facility
- Application
- Hydrogen Transport And Distribution
- Sub-application
- CGH2 tube trailer
- Hydrogen supply chain stage
- Hydrogen Transport (No additional details provided)
- All components affected
- burst disc
- Location type
- Open
- Location description
- Industrial Area
- Operational condition
Emergency & Consequences
- Number of injured persons
- 0
- Number of fatalities
- 0
- Environmental damage
- 0
- Currency
- US$
- Property loss (onsite)
- 177
- Property loss (offsite)
- 0
- Post-event summary
- Only a small material loss: U$ 177.00
- Emergency action
- Both manual block valve upstream and downstream of the incident site were blocked.
Local and federal first responders intervened (unknown their actions)
136 thousand standard cubic feet went lost during the leak (unintentional release)
Event Nature
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Released amount
- 30.1
- Presumed ignition source
- Not reported
References
- Reference & weblink
Incident I-1993061139 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
