Event
- Event ID
- 1214
- Quality
- Description
During the filling of a hydrogen tube trailer, a hissing sound alerted the staff at an industrial gas manufacturing plant to a leak.
The pressure in the tube trailer being filled was close to 200 bar. During the verification process, the operator heard a leak at a valve on a tube at the rear of the trailer.
He took the first safety measures by immediately closing all the valves of the tube trailer. The neighbouring filling stations were also shut down, and the area was secured.
A safety perimeter of 20 meters was established around the loading area. The tube trailer was then purged with inert gas, and corrective maintenance was carried out.- Event Initiating system
- Classification of the physical effects
- Unignited Hydrogen Release
- Nature of the consequences
- leak no ignition
- Macro-region
- Europe
- Country
- France
- Date
- Component involved
- valve (generic)
- Failure mode
- rupture, no ignition
- Initiating cause
- material degradation (generic)
- Root CAUSE analysis
The INITIATING CAUSE was a leak on an unspecified valve or joints when approaching the target filling value of 200 bar.
The ROOT CAUSE is unknown.- Root causes
- Unknown
- Date entry in HIAD
- 30/09/2025
Facility
- Application
- Hydrogen transport and distribution
- Sub-application
- CGH2 tube trailer
- Hydrogen supply chain stage
- All components affected
hose
- 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
- Pre-event occurrences
The leak occured at the end of the operations of filling a tube trailer
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
- Property loss (onsite)
- 0
- Post-event summary
No injury, property loss or environmental impact.
Released substances:
H2 = 26 kg
O2 = 46 kg
HC = 42 kg
H2S = 9 kg- Emergency action
he operator heard the leak and took the first safety measures by immediately closing all the valves of the tube trailer. The neighbouring filling stations were also shut down, and the area was secured.
A safety perimeter of 20 meters was established around the loading area. The tube trailer was then purged with inert gas, and corrective maintenance was carried out.
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Release temperature [°C]
- 25
- Release pressure [MPa]
- 20
- Probable IGNITION SOURCE
References
- Sources categories
- ARIA
- Reference & weblink
Event no.61993 of the French database ARIA
https://www.aria.developpement-durable.gouv.fr/accident/61993/
(accessed December 2024)
