Office for Nuclear Regulation

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Hunterston B - SBI08 and 09

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 Programme (OFP) of the Office for Nuclear Regulation (ONR).

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

Interventions Carried Out by ONR

During this intervention, the following key activity was undertaken:

Explanation of Judgement if Safety System Not Judged to be Adequate

From our inspection, ONR judged that the Short Break Supplies and Grid Systems met the requirements of the safety case and was adequate.

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

From the System Based Inspection on the Short Break Supplies and Grid Systems ONR concluded that:

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 evidence sampled during this SBI-08/09 inspection against LCs 10, 23, 24 and 28, ONR consider that the Short Break Supplies and Grid Systems met the requirements of the safety case.

There are 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.