Office for Nuclear Regulation

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Intervention to discuss the remaining lifetime of the Legacy Uranic Residue Processing Facilities

Executive summary

Purpose of intervention

In line with the 2014/15 inspection plan for Dounreay I carried out planned inspections and other interventions to provide confidence that Dounreay Site Restoration Ltd. (DSRL) is controlling its hazards properly and complying with its statutory obligations.

Interventions Carried Out by ONR

I undertook compliance inspection against Licence Condition 22 Modifications, Licence Condition 26 Control and Supervision and Licence Condition 32 Accumulation of Radioactive Waste within the Waste Directorate.  I participated in a meeting between ONR Site Inspectors and Dounreay Safety Representatives and attended various update meetings for information gathering purposes.

Explanation of Judgement if Safety System Not Judged to be Adequate

N/A

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

My inspection of Licence Conditions 22 and 26 was within the WRACs facility.  I reviewed a work pack associated with a modification to the waste package conveyor system and observed drum assay operations.  In my opinion I observed an adequate standard of compliance with arrangements made under Licence Condition 22 and with Licence Condition 26.  Arisings of drummed LLW from decommissioning activities continue to be stored in iso-containers in a defined hard-standing area.  Appropriate demarcation was in place.  Work is progressing to commission the super-compactor and the LLW grouting facility.  Once these facilities are operational the backlog of LLW can be conditioned for disposal.  I considered that an adequate standard of compliance was demonstrated against arrangements made under Licence Condition 32.

The Site Improvement Programme resulting from the concerns raised by the Prototype Fast Reactor Sodium Tank Farm fire remains at an early stage of development.  The formation of a team to progress improvements will be subject to the management of change process.

Conclusion of Intervention

The intervention did not identify any matter impacting on nuclear safety that required immediate regulatory action.