Office for Nuclear Regulation

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Harwell licensed site compliance inspection

Executive summary

Purpose of Intervention

This inspection on the Harwell licensed site was undertaken as part of a programme of planned interventions as outlined in the site inspection plan for 2017/18.

Interventions Carried Out by ONR

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

The inspection comprised plant inspection, office-based examination of procedures and records and interviews with staff. I also 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 LC32, I inspected implementation of the arrangements for the accumulation and recording of waste at the Liquid Effluent Treatment Plant (LETP), B462 and B220. I found the implementation to be satisfactory for LETP and B462. However, I identified a number of shortfalls related to the accumulation of waste within B220. I have requested that the licensee to provide an action plan to resolve the issues identified.

In relation to LC33, I found that the licensee was able to identify that any directions received from ONR would be complied with in accordance with their LC33 arrangements.

In relation to LC34, I inspected the implementation of arrangements to prevent and detect leakage or escape for the same waste streams as for LC32. Based upon the evidence gathered from my inspection I consider that the implementation of the arrangements was sufficient. I found that the licensee's radioactive waste is adequately packaged and stored so that radioactivity cannot leak or escape. I also found that the licensee is monitoring the condition of stored wastes to ensure that any leak or escape of radioactivity cannot occur without being detected.

With regard to LC35, my inspection focused on gaining an understanding of the decommissioning strategy, progress and the decommissioning milestones and judging their adequacy. I found that the decommissioning strategy and programme is fit for purpose at this stage.

Conclusion of Intervention

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