Office for Nuclear Regulation

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Planned inspections on the management of radioactive waste

Executive summary

Purpose of intervention

Planned intervention at Magnox Ltd's Dungeness A licensed site, undertaken as part of a series of planned interventions outlined in the ONR Integrated Intervention Strategy (IIS) Plan Dungeness A Power Station 2016/2017.

Interventions Carried Out by ONR

An ONR specialist inspector and I carried out a planned compliance inspection of Licence Conditions 32 (Accumulation of radioactive waste) 33 (Disposal of radioactive waste) and 34 (leakage and escape of radioactive material and radioactive waste) carried out as part of a joint regulatory intervention with the Environment Agency. The inspection provided an opportunity for regulatory engagement on the intended use of an outdoor enclosure as a temporary buffer store for Intermediate Level Waste. We also conducted a reactive inspection of new facilities on the site against Licence Conditions 4 (Restrictions on nuclear matter on the site) and 16 (Site Plans).

Explanation of Judgement if Safety System Not Judged to be Adequate

N/A - No safety system based inspections were undertaken during this intervention.

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

We inspected the current waste storage and waste processing areas for both Low Level and Intermediate Level Waste on the site. We judged that the management of waste on the site met the required standards defined in ONR guidance. We observed improvements in the storage or waste and redundant materials in the legacy fuel stores.

We reviewed the licensee's future plans for waste storage on the site to support future retrievals on the Ponds decommissioning programme and other hazard reduction programmes. We inspected the areas identified for future storage and discussed the controls to ensure that the waste would be adequately contained, shielded, maintained and monitored. The licensee demonstrated that the plans have adequately considered safety and containment of the radioactive materials, and we were satisfied with the licensee's assurance that it would continue to review options for improved storage on the site.

We discussed the arrangements for new waste conditioning plants and also temporary waste storage areas in support of waste retrievals for decommissioning and hazard reduction. We were satisfied that the licensee has adequate arrangements for both. The arrangements were mature and included maintaining site plans to show the facilities and their purpose. In conclusion, the inspection did not highlight any concerns regarding the arrangements for radioactive waste management or their implementation. Consequently compliance with licence conditions 4, 16, 32, 33 and 34 is judged to be adequate and an IIS rating of Green is assigned.

Conclusion of Intervention

The findings from this inspection provided confidence that radioactive waste is being managed adequately and appropriately on site. There were no matters identified which represent any safety concerns.