Office for Nuclear Regulation

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Planned Compliance Inspection at Aldermaston

Executive summary

Purpose of intervention

The purpose of this intervention was to undertake Licence Condition (LC) compliance inspections at Aldermaston in line with the planned inspection programme contained in the AWE Integrated Intervention Strategy and associated Intervention Plans. 

Interventions Carried Out by ONR

During this intervention I carried out the following inspections/activities:

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

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable during this inspection.

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

From the evidence sampled during this inspection I judge that the nuclear material processing facility complies with the requirements of LC28 to be to an adequate standard, warranting an IIS rating of 3.  In general,  I judged good control to be demonstrated for the majority of maintenance activity within the facility.  Two shortfalls were identified during the inspection.  The first is a minor shortfall relating to ensuring equipment is maintained in accordance with safety case requirements.  The second shortfall being associated with the management of safety case required maintenance activity which is delivered by third party service providers.  In the second case I have raised a new regulatory issue to track the rectification of the shortfall.

I followed up on progress in relation to regulatory issues relating to:

In all cases I consider that satisfactory progress towards closure is being made.

During my informal discussions, the following topics were discussed:

In all cases, whilst regulatory opinions were sought and given, they were done so in the form of advice to the licensee in developing their programmes of work going forward.

Conclusion of Intervention

The licensee’s progress against regulatory issues raised in relation to earlier interventions was monitored.

There are no findings from this inspection that could significantly undermine nuclear safety.

The planned interventions set out in the Integrated Intervention Strategy for Aldermaston remain valid and will be followed for future inspections.