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The Bhopal disaster or Bhopal gas tragedy was an industrial accident. It happened at a Union Carbide subsidiary pesticide plant in the city of Bhopal, India. On the night of 2-3 December 1984, the plant released 42 tonnes of toxic Methyl Isocyanate (MIC) gas, exposing more than 500,000 people to toxic gases.
A mixture of poisonous gases flooded the city, causing great panic as people woke up with a burning sensation in their lungs. Thousands died immediately from the effects of the gas. Many were trampled in the panic that followed. The first official immediate death toll was 2,259. Another estimate is that 8,000 died within two weeks, that an additional 8,000 have since died from gas-related diseases.
The Bhopal disaster is frequently cited as the world's worst industrial disaster.
There were several negligence and mechanical faults,that were found to be related to the accident:
1 The plant being located nearby the major center of population and simultaneously risking with the huge storage of the toxic Methyl isocyanate (MIC).
2 The accident took place when a large amount of water was introduced in the MIC tankE610 (how or why, is not yet known) that caused an exothermic reaction to take place, that increased the temperature in the tank to over 200 degree Celsius.
3 The safety mechanisms, installed in the factories, were not utilized efficiently. The man on duty tried to turn on the scrubber to check the escape of the toxic gas but neglected to activate the circulation pump. The flare could not be used as it had been removed for repair and maintenance.
The International Medical Commission on Bhopal was established in 1993 to respond to the long term health effects of the disaster.