Office for Nuclear Regulation

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Planned interventions with LLWR relating to LLWR site operations undertaken as part of the planned ONR programme covered by the ONR LLWR inspection plan for 2014/15

Executive summary

Purpose of intervention

This report covers a number of interventions with the Low Level Waste Repository (LLWR), relating to LLWR operations which, which were undertaken as part of the planned ONR LLWR inspection programme for 2014/15.

Interventions Carried Out by ONR

The main interventions undertaken was:

During the visit a number of other interventions/discussions were undertaken including:

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable

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

Site Licence Condition 24 “Operating Instructions” Inspection– The inspection was undertaken utilising the question set within Section 6 of the ONR Technical Inspection Guidance (TIG) Document relating to Licence Condition 24 (LC24). Aspects covered in the inspection included the LLWR LC24 arrangements documentation, the coverage of instructions, the classification of instructions, failure to comply with instructions, the utilisation and issue of correct instruction, instructions update and validation. Overall, the ONR Site Inspector considered that, with respect to the aspects covered in this inspection, the LLWR LC24 arrangements were generally adequate and met the ONR guidance requirements. LLWR is also proactively implementing improvements to the LLWR LC24 arrangements. As not all aspects of LC24 arrangements were covered in this specific inspection a further inspection will be programmed into the ONR 2015/16 LLWR Inspection plan.

PCM Decommissioning Project – Items discussed included the update on the decommissioning work at the 5 Magazine facilities, the proposals to increase the storage capacity of the existing Drum Storage Facility, the future plans for the number of “legacy” drums stored in the Drum Storage Facility and proposed changes to the safety cases covering PCM Decommissioning Project activities. Overall, the ONR Site Inspector considered that the discussions had provided a useful update on the PCM Decommissioning Project work. No new significant issues and concerns were raised from the discussions

Other interventions - It is considered that the various interventions undertaken did not raise any significant new issues or concerns. However a number of actions were placed on LLWR to progress and several topics will be followed up in future site visits/ discussions with LLWR staff.

Conclusion of Intervention

Other than the items outlined in the previous section no other matters were raised during the interventions covered by this report which were considered to require any immediate additional regulatory action