Office for Nuclear Regulation

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Bradwell Nuclear Licensed Site Planned Inspections and Meetings

Executive summary

Purpose of intervention

This report describes an inspection of Magnox Ltd's Bradwell licensed site, undertaken as part of a series of routine interventions set out in the Integrated Intervention Strategy document. 

Interventions Carried Out by ONR

During the intervention I carried out a compliance inspection on Licence Condition 32 - Accumulation of radioactive waste (LC 32).  This was focussed on consideration of site’s radioactive waste for which there is no existing disposal route, i.e. Higher Activity Radioactive Wastes (HAW).

I attended a number of meetings that provided progress updates and opportunity to monitor and influence the work programmes to package and condition HAW on the site and to provide advice on future planned work to consolidate HAW from other Magnox sites at Bradwell.  The intervention was attended and jointly carried out with the Environment Agency (EA).

Explanation of Judgement if Safety System Not Judged to be Adequate

This intervention did not include a safety system inspection.

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

I found evidence that, in the area inspected, the arrangements for compliance with LC 32 at the site are adequate.  The site continues to make satisfactory progress to condition HAW streams into a form suitable for interim storage on site prior to disposal in a Geological Disposal Facility (GDF).  For example, Radioactive Waste Management Ltd’s (RWM) independent disposability assessment has concluded that, for the one waste stream assessed so far, there is consistency between the site’s waste packages and the likely requirements of the GDF.

I have found some evidence that aspects of the site’s approach to the conditioning of HAW differs from the model approach outlined in the joint regulatory guidance on radioactive waste management.  Although these differences in approach appear to be of limited significance thus far, further technical assessment by the regulators has been judged necessary to confirm the site’s approach is at least of an equivalent standard to the joint regulatory guidance on radioactive waste management.  The site has been actioned to supply additional documentation to ONR.

Conclusion of Intervention

In the area I considered during the intervention, I found that the implementation of the arrangements for compliance with LC 32 at Bradwell was to an adequate standard.  Some further technical assessment of the site’s approach to HAW management will be carried out by ONR to ensure that an equivalent standard to the joint regulatory guidance on radioactive waste management is being applied.