Office for Nuclear Regulation

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Planned inspection at the AWE Aldermaston

Executive summary

Purpose of Intervention

This report covers a planned inspection at the AWE Aldermaston Licensed Site that was undertaken in accordance with ONR’s Integrated Intervention Strategy (IIS) for the Atomic Weapons Establishment Programme.

The inspections undertaken at the Aldermaston Licensed Site form part of a series of planned interventions in accordance with the IIS and Integrated Intervention Plan (IIP). The purpose of the intervention was to undertake an inspection of compliance with the Ionising Radiations Regulations 1999 (IRR99), as planned in the weapons inspection plan.

Interventions Carried Out by ONR

The intervention was performed in line with ONR’s guidance requirements (as described in our technical inspection guides) in the areas inspected.

An inspection was made covering IRR99 with the focus on inspecting compliance with Regulation 15 (Co-operation between employers) by sampling the interaction between AWE and other organisations that work on the AWE Aldermaston site. During this intervention I met with the licensee’s personnel and representatives of two other organisations that may be exposed to radiation during the course of their duties on the site.

Explanation of Judgement if Safety System Not Judged to be Adequate

This was not a Safety System Inspection.

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

The licensee was able to demonstrate appropriate measures are being implemented to ensure compliance with IRR99 in the areas sampled. The licensee had identified some areas for improvement with one organisation. I noted that progress has been made and a full review is due next year. There was evidence that information and advice is shared between the organisations I sampled and I saw examples of pragmatic solutions to minimise radiological risks whilst taking account of other hazards.

Conclusion of Intervention

Based upon the evidence I sampled during the inspections I judged that arrangements were adequate and there was no need for regulatory action.