Office for Nuclear Regulation

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Magnox Ltd Winfrith Compliance Inspection

Executive summary

Purpose of intervention

This report covers an inspection of Magnox Ltd's Winfrith nuclear licensed site between 27-28 February 2017. This inspection was undertaken as part of a programme of planned interventions as outlined in the site inspection plan for 2016/17.

Interventions Carried Out by ONR

During this intervention, I carried out a compliance inspection against the following licence conditions.

My inspections were carried out against the requirements of ONR's published inspection guidance associated with the above Licence Conditions. The inspection comprised plant inspection, office-based examination of procedures and records and interviews with staff. Whilst on site I held a meeting with the licensee on its safety culture, and to discuss and follow up on the status of actions, and held meetings to discuss a number of routine matters.

Explanation of Judgement if Safety System Not Judged to be Adequate

No safety system was inspected during this intervention.

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

In relation to Licence Condition 2, the site inspector undertook an inspection of the In Winfrith Nuclear Site Boundary. As part of this inspection the proposed inter-site boundary that will be formed should a nuclear site licence be granted to Inutec Ltd (currently a tenant on the Winfrith site) was also considered. The site inspector considers that the licensee has suitably marked its nuclear site boundaries and that the site boundaries are properly maintained. Therefore this inspection has been rated as Green.

In relation to Licence Condition 17, the management systems at Winfrith are undergoing significant change as a result of Magnox Ltd's common process project and the licensee has recognised the difficulties with implementing this project. During my intervention I have found that the management system meets ONR guidance and that the licensee has demonstrated that it has sufficient control of its management system. This inspection has been rated as Green.

In relation to Licence Condition 36, the focus of this intervention was to consider the licensee's organisational baseline and safety management prospectus in the preparations for relicensing. The site inspector has confirmed that the licensee has made no significant changes to its arrangements since it was relicensed in 2015 when ONR judged the licensee's arrangements to be acceptable. I consider that the licensee is maintaining appropriate arrangements for compliance to LC36 and consider an IIS rating of Green to be correct for this inspection.

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

From the evidence gathered during this intervention, I conclude that there are no matters that may impact significantly on nuclear safety.