Office for Nuclear Regulation

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Hinkley Point B - Planned Interventions

Executive summary

Purpose of Intervention

This was a planned inspection at EdF Energy Nuclear Generation Ltd's (NGL's) Hinkley Point B Power Station, undertaken to support the intervention strategy for the Operating Facilities Division (OFD) 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, supported by a Fault Studies specialist Inspector, performed an inspection to evaluate NGL's compliance with the following nuclear site licence conditions (LCs), which are applicable provisions of the Energy Act 2013:

Whilst on site, I also undertook the following engagement activities with the licensee;

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. No system inspections were carried out on this visit.

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

For LC12 (duly authorised persons (DAPs) and other suitably qualified and experienced persons (SQEPs), I sampled the licensee's arrangements for training, assessment, appointment and management of DAPs & SQEPs. I also sampled the training records and held discussions with a number of staff nominated to the DAP roles. This included a reactor desk engineer, control room supervisor and shift managers. I am satisfied that the licensee arrangements and their implementation in compliance with LC12 are suitable and sufficient. A few minor observations were fed back to the licensee to consider. No formal actions were considered necessary. I am satisfied that an IIS rating of green against LC12 is merited.

For LC14 (safety documentation), I sampled the licensee's arrangements for authoring, verification, categorisation, approval and implementation of safety documentation focusing on modifications to plant and processes. I also sampled the extant list of Interim Justification for Continued Operation (IJCOs). I held discussions with a safety case author and an end user to gain regulatory confidence in the visibility and usability of the safety case. I concluded that the requirements had been met and that HPB had robust arrangements to control, author, verify and track the production of safety case documentation. I am satisfied that an IIS rating of green against LC14 is merited.

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 IIS, which will continue as planned