Office for Nuclear Regulation

This website uses non-intrusive cookies to improve your user experience. You can visit our cookie privacy page for more information.

Mid Cycle Review, Annual Emergency Exercise Review

Executive summary

Purpose of intervention

The purpose of this intervention was to attend the mid-cycle review and undertake licence condition (LC) compliance inspections at EDF Energy Nuclear Generation Limited (NGL) Sizewell B power station in line with the inspection programme contained in the Sizewell B integrated intervention strategy (IIS) for 2015/16.

Interventions Carried Out by ONR

As part of this intervention, the ONR Superintending Inspector operating reactors and safety and security inspectors attended the mid-cycle review meeting.   I also attended the annual emergency arrangements review meeting to inspect compliance with LC 11: Emergency arrangements.  

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable to this intervention.

Key Findings, Inspector's Opinions and Reasons for Judgements Made

The mid-cycle review was considered to be comprehensive and demonstrated positive commitment by the Licensee to ensuring safety, security and environmental protection is properly managed.

The annual emergency arrangements review was considered to be thorough and demonstrated an adequate level of performance of the emergency arrangements. 

The intervention was performed in line with ONR’s guidance requirements (as described in our technical inspection guides) in the areas inspected.

Conclusion of Intervention

From the information gathered and evidence obtained during this intervention, no matters have been identified that are likely to have significant impact on nuclear safety on the station at this time. Therefore we consider that no additional regulatory action arising from this visit is necessary currently, and the interventions for Sizewell B power station, set out in the integrated intervention strategy, should continue to be implemented as planned.