Office for Nuclear Regulation

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Planned System Based Compliance Inspection at a decommissioning facility

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.

Explanation of Judgement if Safety System Not Judged to be Adequate

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.

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

From the evidence sampled during this inspection, I judge that AWE’s arrangements to comply with the requirements of LC10, 23, 24, 27 and 28, which constitute the system based inspection, are adequate in that they meet the majority of ONR’s expectations.  During the inspection I witnessed no significant shortfalls in the implementation of those arrangements.  I, therefore, consider them to have been implemented to an adequate standard.  

I gained an understanding of the hydrodynamics programme and requirements for future regulatory interventions.  I engaged with AWE on its developing Higher Activity Waste programme strategy and on progress toward complying with the extant Improvement Notice issued by ONR.  Inspectors also continued their engagement with AWE on a forthcoming plant modification.

Conclusion of Intervention

Based on the planned system based inspection undertaken against the requirements of licence conditions 10, 23, 24, 27 and 28, I consider that the licensee has adequate arrangements to comply with the licence conditions, and is implementing the requirements of those arrangements, to an adequate standard.  I therefore judge the system to adequately fulfil the requirements of the safety case.