Pollution
Humain
Environnement
Economique

In a chemical plant producing chlorine, a electrolysis room had to shut down operations subsequent to a micro electrical power outage during a thunderstorm. An inappropriate manipulation caused a rise of pressurised gaseous chlorine into an unpressurised column located upstream of a compressor that was still running. The column head was lifted and 6 kg of chlorine were released into the atmosphere.