Office for Nuclear Regulation

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Planned Licence Condition Compliance Inspection covering LC7

Executive summary

Purpose of Intervention

In accordance with the Office for Nuclear Regulation’s (ONR’s) Sellafield Strategy, each year ONR performs a series of planned compliance inspections of selected licence conditions, targeted at those facilities with significant importance to nuclear safety.

One such licence condition inspection was performed to assess the Thermal Oxide Reprocessing Plant (Thorp) and Oxide Fuel Storage Group (OFSG) compliance with Sellafield Ltd’s (SL) corporate arrangements for Licence Condition (LC) 7 (Incidents on the site).  Licence Condition 7 (LC7) requires SL to make and implement adequate arrangements for the notification, recording, investigation and reporting of such incidents occurring on the site.

Interventions Carried Out by ONR

I carried out a planned compliance inspection against Licence Condition 7. This comprised discussions with SL personnel, and reviews of SL records, documents and processes. In addition, I held a routine information sharing meeting with Safety Representatives. The latter intervention is not detailed further in this executive summary. 

Explanation of Judgement if Safety System Not Judged to be Adequate

N/A as this was not a System Based Inspection.

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

I saw evidence that Thorp and OFSG have continued to embed use of the improved corporate arrangements for LC 7 since the last inspection in 2017, and the evidence supported an adequate reporting culture.  I sampled Condition Reports to confirm that they were appropriately sentenced, investigated, and had appropriate corrective actions raised. I also sampled Corrective Action Effectiveness Reports and found them to be thorough with challenge made where necessary. 

I found that Metric dashboards were being used effectively to assist proactive governance to ensure that investigations are undertaken in a timely manner and resulting actions completed to time. I saw evidence that Thorp and OFSG are making use of OPEX intelligence to drive improvement.

Conclusion of Intervention

From the evidence sampled during the inspection, I consider that SL has effectively implemented its arrangements for compliance with LC 7 across Thorp and OFSG and I have assigned an inspection rating of Green (no formal action) to be appropriate for compliance against LC 7; Incidents on the site.