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Justification for return to service from Forced Outage 43 (FO43)

British Energy Generation Limited, the licensee of Sizewell B nuclear power station, has requested agreement from HSE Nuclear Directorate to modifications to the reactor pressuriser. This request is in line with the licensee’s responsibility, as set out in its nuclear site licence (licence condition 22). British Energy Generation Limited has provided justification that the reactor is safe to operate in a written safety case.

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