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Phosgene Release

Incident

Phosgene was released from a scrubber complex.

The Investigation

Three caustic scrubbers were used in series, the operators checked the scrubber contents and recharged them as required.  This eventually led to a biuld up of carbonates and bicarbonates, with the inevitable formation of solids.  These solids blocked the pipework, causing the phosgene to be released.

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