Office for Nuclear Regulation

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Hinkley Point B Planned Intervention

Executive summary

Purpose of intervention

This was a planned inspection of EDF Energy Nuclear Generation Ltd’s (NGL’s) Hinkley Point B power station, undertaken as part of the planned intervention strategy for the Civil Nuclear Reactor Programme (CNRP) of the Office for Nuclear Regulation (ONR).

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

Interventions Carried Out by ONR

I (the nominated site inspector for Hinkley Point B) with an ONR Structural Integrity Inspector and a Mechanical Engineering Inspector carried out a System Based Inspection (SBI) on control rods. 

I also:

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

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable – the system was judged to be adequate.

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

From the system based inspection on control rods we concluded that:

Overall, after considering the evidence presented by the Licensee, we considered that the arrangements and their implementation associated with the control rod system met the requirements of the safety case and were deemed to be adequate.

I (the nominated site inspector) carried out the following inspections:

Conclusion of Intervention

There were no findings from this inspection that could significantly undermine nuclear safety.