Radioactive dust leak prompts warning from SEPA

Testing a ventilation system at the decommissioned Dounreay nuclear site led to an unlawful escape of radiation, according to the Scottish Environment Protection Agency (SEPA).

A statement from the regulator said that Dounreay Site Restoration Ltd (DSRL) had made “multiple” legal breaches. The joint venture is decommissioning Dounreay’s two reactors and associated infrastructure.

The incident in February was caused by the failure of a valve within the site’s uranium recovery plant. This led to the disturbance and escape of the dust in the system through a stack. It prompted an in-house investigation and a probe by SEPA.

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