Event
- Event ID
- 542
- Quality
- Description
- A joint failure allowed a mixture of hydrogen and nitrogen into the atmosphere.
Failure of double cone joint on waste heat boiler in synthesis loop caused release of synthesis gas at 28.7 MPa and 170 degrees C after shutdown for maintenance.
There was no structural damage. - Event Initiating system
- Classification of the physical effects
- Unignited Hydrogen Release
- Nature of the consequences
- Leak No Ignition (No additional details provided)
- Macro-region
- Europe
- Country
- United Kingdom
- Date
- Main component involved?
- Joint/Connection (Threaded)
- How was it involved?
- Rupture
- Initiating cause
- Unknown
- Root causes
- Unknown (No additional details provided)
Facility
- Application
- Chemical Industry
- Sub-application
- Ammonia production
- Hydrogen supply chain stage
- All components affected
- Ammonia storage tank, connection between ship and storage
- Location type
- Unknown
- Location description
- Industrial Area
- Operational condition
- Pre-event occurrences
- The unit was shutdown for maitenance at the moment of the release
Emergency & Consequences
- Number of injured persons
- 0
- Number of fatalities
- 0
Event Nature
- Release type
- gas mixture
- Involved substances (% vol)
- H2, synthesis gas and N2
- Actual pressure (MPa)
- 28.7
- Presumed ignition source
- No ignition
References
- Reference & weblink
Extract from Leonoir and Davenport, Survey of Vapor Cloud Explosions: Second Update, Process Safety Progress, 12 (1993) 12-33.
Leonoir and Davenport, Survey of Vapor Cloud Explosions: Second Update, Process Safety Progress, 12 (1993) 12-33.
JRC assessment
- Sources categories
- News
