Event
- Event ID
- 31
- Quality
- Description
This incident consisted in the dropping of a gas cylinder and the release of its content due to stress corrosion
- Event Initiating system
- Classification of the physical effects
- Unignited Hydrogen Release
- Nature of the consequences
- release, no ignition
- Macro-region
- Europe
- Country
- Netherlands
- Date
- Component involved
- CGH2 cylinder(s)
- Failure mode
- leak
- Initiating cause
- impact, rollover, crash
- Root CAUSE analysis
The INITIATING CAUSE was the accidental dropping of a CGH2 cylinders.
A CONTRIBUTING FACTOR is attributed by this very brief report to the degradation of the load-bearing capacity of the cylinder due to stress corrosion. Although not mentioned, it would be plausible to assume that this degradation was hydrogen-assisted.
The ROOT CAUSE could be a combination of a human error causing the dropping and lack of inspection on the integrity of the cylinder. Since the conditions under which the cylinder was transported are unknown, it is impossible to drawn conclusion on the contribution of job-related factors.
- Root causes
- Date entry in HIAD
- 28/02/2009
Facility
- Application
- Unknown
- Hydrogen supply chain stage
- All components affected
CGH2 cylinders
- 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
- Semiconfined
- Location
- unknown
- Operational condition
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 2
- Post-event summary
The hydrogen released did not ignited, but injuries occurred because of flying debris caused by the internal pressure.
In-depth data
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Release temperature [°C]
- 25
- Probable IGNITION SOURCE
References
- Sources categories
- Scientific article
- Reference & weblink
M. Kreiser, G. Fröhlich, H. Eichert, A.Schatz,
IKE Universität Stuttgart ISSN 0173-6892, April 1994
Analyse von Störfällen mit Wasserstoff in bisherigen Anwendungsbereichen mit besonderer Berücksichtigung von LH2"Bockholts and Koehorst, 1992
