Event
- Event ID
- 821
- Quality
- Description
A leakage of a mixture of flammable gases occurred during ventilation shutdown on high temperature PVC furnaces. The mixture consisted of hydrogen, nitrogen, citric acid, hydrofluoric acid and hydrogen sulphide.
The accident followed an electrical outage triggered by the failure of a general circuit breaker. It happened when the electricity providers switched from the emergency power supply to the main power supply.- 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
- reactor / oven / furnace / test chamber
- Failure mode
- rupture, no ignition
- Initiating cause
- conventional component failure (electricity, power)
- Root CAUSE analysis
The INITIATING CAUSE was a release of hydrogen and other flammable gases during a shutdown caused by electrical power transient.
- Root causes
- Unknown
- Date entry in HIAD
- 01/01/2020
Facility
- Application
- Other
- Sub-application
- PVC components for vehicles
- Hydrogen supply chain stage
- All components affected
PVC furnaces
- Location type
- Confined
- Location
- industrial area
- Operational condition
Emergency & Consequences
- Number of fatalities
- 0
- Number of injured persons
- 0
In-depth data
- Release type
- gas mixture
- Involved substances (% vol)
- H2,
N2,
citric acid,
HF,
H2S - Probable IGNITION SOURCE
References
- Sources categories
- ARIA
- Reference & weblink
ARIA data base
event no. 735
