Office for Nuclear Regulation

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Inspection of Magnox Ltd's Sizewell A and Dungeness A nuclear licensed sites

Executive summary

Purpose of intervention

This report covers an inspection of Magnox Ltd's Sizewell A nuclear licensed site on 28-30 June 2016 and an inspection of the Dungeness A Nuclear Safety Committee on 28 June 2016 This inspection was undertaken as part of a programme of planned interventions as outlined in the Sizewell A and Dungeness A IIS plans for 2016/17.

Interventions Carried Out by ONR

During this intervention, I carried out compliance inspections against the Ionisation Regulation Regulations (IRR99) and Licence Condition 13 - Nuclear Safety Committees for both Sizewell A and Dungeness A. I also observed the Sizewell A Level 1 emergency demonstration and assessed this against Licence Condition 11 requirements. My inspection was carried out against the requirements of ONR's published inspection guidance associated with these Licence Conditions.

I also attended a meeting to discuss the changes to Lifetime Plans for the South East region sites.

Explanation of Judgement if Safety System Not Judged to be Adequate

This intervention did not include an inspection of a safety system.

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

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 concluded that there are no matters of nuclear safety concern. Compliance with Ionising Radiation Regulations and Licence Condition 13 were both judged to be green. The Level 1 emergency exercise was not a successful demonstration of the site's arrangements for contamination control and casualty handling. I have therefore rated this condition amber, and the licensee agreed to carry out a partial re-demonstration to prove any shortfalls have been addressed.