Office for Nuclear Regulation

Hunterston B - LC36 compliance inspection

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) for 2018/19.

Interventions Carried Out by ONR

As part of this intervention I, the nominated site inspector carried out an inspection against:

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

I also held a number of routine meetings and received updates on the progress being made to close out regulatory issues previously raised.

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 26 (Control and supervision of operations) - I inspected the station implementation of the EDF procedures for control and supervision of contractors performing work during the Reactor 3 outage.

The inspection sampled the station outage organisation and management arrangements for control and supervision of contractor performed works, involved interview with and observation of contractors performing supervisory and working party leader roles and sampled the EDF training and authorisation records of persons appointed as field supervisors.

From the sample of the procedures and practices applied to the control and supervision of operations during the reactor 3 outage at Hunterston B, I judged that the station is ensuring a good standard of oversight of contractor performed works.  Some observations were identified, where station has opportunity to improve its oversight of the contractor operations, however these were minor, and I therefore rated this inspection as Green, no formal action for LC 26. 

Conclusion of Intervention

There were no findings from this inspection that could significantly undermine nuclear safety during the Reactor 3 outage.  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.