Office for Nuclear Regulation

Winfrith - Planned Topic Area Compliance Inspection

Executive summary

Purpose of Intervention

These compliance inspections on the Winfrith licensed site were undertaken as part of a programme of planned interventions as outlined the Magnox southern sites’ inspection plan for 2018/19.  The scope of the inspection is aligned to the ONR Decommissioning, Fuel and Waste sub-division strategy and focussed on the effective management of decommissioning and radioactive waste, as documented as an inspection topic area in the strategy.  The inspection was carried out jointly with the Environment Agency.

Interventions Carried Out by ONR

During this intervention, I carried out a compliance inspection against the following licence conditions (LCs).

I sought to gain evidence that:

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable.

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

I found that the licensee was able to demonstrate compliance through its procedures and written arrangements with LC 32, 34 and LC 35 from the sample of arrangements and plant inspected. 

However the licensee was unable to provide a clear link between the local arrangements for LCs 32 and 34 and the Magnox Ltd management arrangements for Winfrith.  Documents provided showed high-level policy-type ‘enabling’ procedures, and low-level supporting specifications and standards, but the intermediate-level specific compliance arrangement documents were unavailable.  The licensee appeared to be part-way through a transition from RSRL’s management system; at the current time it appeared to be operating to a partly-documented new system in parallel to its previous arrangements.

Despite the shortcomings observed in the availability of documented arrangements, in the time available for physical inspection the arrangements as implemented appeared to be adequate.  The staff interviewed very open and knowledgeable and competent in their areas.  Good evidence of decommissioning programming and project execution (including waste management activities) was apparent, and the physical walk-rounds showed a high-level of management control over operations: housekeeping, access control and signage.

Conclusion of Intervention

In my opinion the Licensee's arrangements for compliance with LC 32, 34 and 35 were adequate from the arrangements examined and the plant inspected.  I therefore conclude that there are no matters that may impact significantly on nuclear safety.