Office for Nuclear Regulation

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Hunterston B Power Station planned intervention

Executive summary

Purpose of Intervention

This was a planned inspection of EDF Energy Nuclear Generation Ltd.'s (NGL's) Hunterston B Power Station, undertaken as part of the planned intervention strategy for the Operating Facilities Division (OFD) of the Office for Nuclear Regulation (ONR).

The work was carried out in accord with the planned inspection programme contained in the Hunterston B Integrated Intervention Strategy (IIS).

Interventions Carried Out by ONR

As part of this intervention, we carried out a licence condition (LC) compliance inspection against LC30 - Periodic Shutdown. The nature of the inspection was the attendance of the Superintending, Project and Site Inspectors at the Reactor 4 Re-start meeting.

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

I, the nominated site inspector also attended other meetings and received an update on the progress being made against actions raised by the site Corrective Actions Review Board.

Explanation of Judgement if Safety System Not Judged to be Adequate

No system based inspection was undertaken hence, this is not applicable for this intervention.

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

Licence Condition 30 (Periodic shutdown) - We were satisfied that no matters that would affect the re-start of Reactor 4 were identified at the re-start meeting. We judged that the licensee was meeting the requirements for re-start meetings and assigned a rating of Green (no formal action) for LC30 compliance.

Conclusion of Intervention

There were no findings from this inspection that could significantly undermine nuclear safety. At present, no additional regulatory action is needed over and above the planned interventions at Hunterston B Power Station as set out in the Integrated Intervention Strategy, which will continue as planned.