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AWE identified and reported to the Office for Nuclear Regulation (ONR) in February 2014 two separate instances of fire detectors not working at two of the facilities holding radioactive material.
Following a site-wide review, the company has now provided assurance to the ONR that all its detection systems are now fully functional.
Once the problems were identified immediate action was taken which included maintenance work and complete systems testing which established there were no further issues. More stringent management controls relating to fire alarm systems were also introduced in response to the incidents.
Although neither of the two incidents resulted in injury or exposure to radiation, AWE fully acknowledges the importance of all fire detector systems being fully operational and will continue to work openly and collaboratively with its regulators to improve safety standards.
The AWE sites have comprehensive fire detection and response systems, including on-site fire and rescue services.
A mid to longer term plan for ensuring the adequate and effective maintenance and operation of fire detections systems has been agreed with the ONR.
Notes to Editors: