Office for Nuclear Regulation

EDF Energy – Nuclear Generation Ltd – 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 colleague from Regulatory Intelligence carried out a compliance and benchmarking exercise on licence condition 7 (incidents on the site).  I also:

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable – no system inspections were carried out on this visit.

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

The key findings were:

We considered the arrangements made under LC7 to be comprehensive.  No significant areas of concern were identified and a number of good practices were observed.  We concluded that the station had developed adequate procedures to address incidents on the site and we therefore assigned an IIS rating of 3, (adequate) to this inspection.

I reviewed the ONR Issues database and the progress that was being made to address the issues.  I will review the database routinely every quarter.

I met with the Independent Nuclear Assurance (INA) Inspector on site to review recent events including proposed changes to INA representation on site, ONR inspection plans and arrangements for the joint INA/OR system based inspection of the heating and ventilation plant scheduled for the following week. 

I attended a meeting of the Emergency Planning Consultative Committee which provided a forum for organisations with responsibilities for preparing emergency arrangements in response to an event at Hinkley Point power stations. I regard the EPCC as an important stakeholder engagement meeting. 

I was satisfied with the information exchanged during meetings with NGL staff on a range of topics including the recent trip of Reactor 3, drone flights close to the site boundary, ongoing inspections as part of the Pressurised System Safety Regulations and repairs to the dump condenser.

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

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 of Hinkley Point B power station as set out in the Integrated Intervention Strategy, which will continue as planned.