Event
- Event ID
- 955
- Quality
- Description
- Hydrogen leaked from an analyser of a unit for the production of sodium chlorate. Thehydrogen ignited. On-site staff isolate the leak very quickly, so that the amount of hydrogen released was negligible.
Event no. 35501 of the French database ARIA (accessed December 2020)
https://www.aria.developpement-durable.gouv.fr/accident/35501/ - Event Initiating system
- Classification of the physical effects
- Hydrogen Release and Ignition
- Nature of the consequences
- Fire (No additional details provided)
- Macro-region
- Europe
- Country
- France
- Date
- Root causes
- Unknown (No additional details provided)
Facility
- Application
- Chemical Industry
- Sub-application
- Inorganic chemicals products
- Hydrogen supply chain stage
- All components affected
- Analyser, sodium chlorate plant
- Location type
- Unknown
- Location description
- Industrial Area
- Operational condition
- Description of the facility/unit/process/substances
- DESCRIPTION OF THE PROCESS
Sodium chlorate is produced by the electrolysis of a hot sodium chloride (NaCl) solution according to the formula:
NaCl + 3 H2O → NaClO3 + 3 H2
Hydrogen is a by-product of this process.
Emergency & Consequences
- Number of injured persons
- 0
- Number of fatalities
- 0
- Post-event summary
- Since the leak was quickly isolated, the amount of hydrogen released was negligible.
This incident did not cause any personal injury or material damage and did not have a
significant impact on the environment.
Event Nature
- Release type
- gas
- Involved substances (% vol)
- H2 100%
- Presumed ignition source
- Not reported
- Flame type
- Other
References
- Reference & weblink
Event no 35501 description of the French database ARIA (accessed December 2020)
JRC assessment
- Sources categories
- ARIA
