Office for Nuclear Regulation

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IRR17 inspection - THORP

Executive summary

Purpose of Intervention

This report presents the findings of a planned intervention that was undertaken at the Sellafield nuclear licensed site in order to assess Sellafield Limited's (SL) compliance with the Ionising Radiations Regulations 2017 (IRR17) within the Thermal Oxide Reprocessing Plant (THORP) and the Oxide Fuel Storage Group.

Interventions Carried Out by ONR

The licensee provided a summary of its arrangements for ensuring compliance with IRR17. Matters inspected included the application of control measures for restricting exposure to radiation, dose management, control of work, training and supervision of personnel, and contingency arrangements. A range of documentation, including risk assessments, local rules, emergency arrangements, SQEP records, and staff training status records was also examined during the intervention. We undertook a plant inspection to sample whether the licensee's arrangements were being effectively applied at the point of work.

IRR17 is primarily concerned with ensuring that work with ionising radiations is conducted safely. We assessed the adequacy of SL's arrangements for the control of work with ionising radiations, focussing on compliance with the following aspects of IRR17:

Explanation of Judgement if Safety System Not Judged to be Adequate

This intervention was not a system based inspection.

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

From what we observed and examined, the arrangements for the control of work with ionising radiations and their implementation indicate that there are no significant shortfalls of compliance with the Ionising Radiations Regulations 2017 (IRR17) within the Thermal Oxide Reprocessing Plant (THORP) or the Oxide Fuel Storage Group.

Conclusion of Intervention

From what we observed and examined, the arrangements for the control of work with ionising radiations and their implementation indicate that there are no significant shortfalls of compliance with the Ionising Radiations Regulations 2017 (IRR17) within the Thermal Oxide Reprocessing Plant (THORP) and the Oxide Fuel Storage Group. Consequently, we rated the intervention as Green (No Formal Action).