Office for Nuclear Regulation

Sellafield - Pile Fuel Storage Pond (PFSP) - Compliance Inspection of Licence Condition 35

Executive summary

Purpose of Intervention

This intervention, conducted at the Licensee’s Sellafield Limited (SL) Cumbria licensed site, was undertaken as part of the 2018/19 intervention plan and the Sellafield sub-division strategy.

Interventions Carried Out by ONR

I conducted a Licence Condition (LC) 35 (“Decommissioning”) compliance inspection, which focused on the implementation of the licensee’s arrangements which requires the licensee to “make and implement adequate arrangements for the decommissioning of any plant or process that may affect safety”, within the Sellafield Retrievals Value Stream and more specifically focussed on the Pile Fuel Storage Pond on Sellafield Ltd’s nuclear licensed site. This inspection was conducted to enable ONR to make a judgement as to the adequacy of the implementation of the licensee’s arrangements for compliance with the respective LC.

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable.

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

No matters were identified as requiring immediate regulatory attention during the conduct of the compliance inspection.

I identified no areas for improvement during the compliance inspection which warranted a regulatory issue.

I noted that there may be a gap in the arrangements relating to strategic planning at the sub-Value Stream level that relates specifically to the period of retrievals for legacy ponds and silos. This point will be raised with the ONR Corporate Inspector for consideration.

In order to judge the adequacy of the implementation of these arrangements, I targeted progress with material retrievals from the pond.  From the sample I reviewed, I judged that the licensee is making good progress with retrievals and that the dynamic approach taken in light of emerging information is well justified.

Conclusion of Intervention

The LC 35 compliance inspection demonstrated that the licensee has adequately implemented the arrangements in place under LC 35. I therefore consider, noting the ONR guidance on inspection ratings, that an inspection rating of Green (no formal action required) is merited here.