Office for Nuclear Regulation

Sellafield Ltd IRR17 inspection of First Generation Magnox Storage Pond

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 First Generation Magnox Storage Pond.

The intervention was the second of six planned interventions across the Sellafield site examining the standard of radiological protection culture and practice across multiple operating units. 

Interventions Carried Out by ONR

The intervention consisted of an examination of the implementation of arrangements to secure compliance with the requirements of IRR17 by discussion with key facility personnel and inspection of plant.  The key requirements examined were those relating to:

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable, this was not a System Based Inspection.

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

Based on the work areas and work activities examined, I found that arrangements for the control of work with ionising radiations within MER were adequate.  In particular:

I noted that the local rules for several R3/C3 areas required that a Temporary Respirator Zone (TRZ) be established within the adjacent R2/C2 areas during operations that may result in the generation of airborne activity that may migrate into the R2/C2 area.  I noted that the requirement to demarcate a TRZ was specified in the R3/C3 local rules via the deployment of wall mounted retractable barriers, but there was no specification in the local rules for the adjacent R2/C2 areas for respiratory protective equipment (RPE) to be worn within the demarcated TRZ.  The RPA informed me that this requirement had been communicated to all facility personnel via safety briefings and that the designation of a TRZ was made clear via text on the deployed retractable barriers.  I recommended that, in order to ensure that all personnel were aware of this requirement at all times, that the requirement to wear RPE within a TRZ should be specified within the relevant R2/C2 local rules and supplemented by local signage or within local rules specific to the area demarcated within the TRZ.

Conclusion of the Intervention

From what I 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 FGMSP.  I rated the interventions as Green (No Formal Action).  No matters that required a regulatory issue to be raised were identified during the intervention.