Office for Nuclear Regulation

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Visit to EDF at Barnwood to Discuss LC22

Executive summary

Purpose of intervention

The purpose of this intervention was to undertake a licence condition (LC) compliance inspection at EDF Energy Nuclear Generation Limited (NGL) Corporate Centre at Barnwood, in line with the inspection programme contained in the EDF Corporate integrated intervention strategy (IIS) for 2016/17. Specifically, this was part of a fleet-wide, corporate LC22 inspection.

Interventions Carried Out by ONR

As part of this intervention, we reviewed NGL's Maintain Design Integrity (MDI) governance and oversight arrangements, in accordance with ONR guide NS-INSP-GD-022 Revision 3. We focused on configuration control of plant in the process of being modified. The intervention was based upon a discussion with the NGL MDI Process Owner and key staff and reviews of MDI processes and metrics.

Explanation of Judgement if Safety System Not Judged to be Adequate

No safety system inspection was undertaken, hence this is not applicable.

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

During our inspection we discussed the NGL arrangements for governance and oversight for configuration control of modified plant at stations. This included links to MDI Process Leads at each station.

We also reviewed the oversight KPI metrics. Improving trends were identified, however it was recognised that continuous improvement was key and that there were further improvements to be made. A number of initiatives had been taken to help reduce the number of open modifications.

We noted that key areas for attention were recognised and that the MDI Annual Plan was reviewed and changed each year to ensure continued improvement.

We were informed that, as well as routine meetings to review updated metrics, there were a series of targeted audits planned throughout the year.

We shared the findings to date from the ONR 2016/17 LC22 fleet wide intervention.

Based on our inspection, we judged that the governance and oversight of the configuration control arrangements for LC22 at stations reflect relevant good practice and have rated this intervention as Green.

Conclusion of Intervention

Overall, we consider that the LC22 arrangements for the governance and oversight of configuration control of modified plant and their associated implementation met legal requirements; we have therefore rated this inspection as Green. Feedback from the ONR 2016/17 fleet wide LC22 intervention will be shared with NGL MDI team and Independent Nuclear Assurance, including identifying areas for further improvement.

There are no findings from this inspection that could significantly undermine nuclear safety nor require a change to ONR's planned interventions for NGL Corporate Centre.