Enforcement action

Pharmaceuticals giant AstraZeneca received an enforcement notice after a release of 300kg of hydrogen chloride and toluene vapours at its site in Avonmouth on 16 February. Workers exposed to the fumes needed medical attention. The incident occurred when water entered a chemical vessel and reacted with the hot contents. An investigation has revealed failures in the company's risk assessment and computer control software which should have identified the problem.

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