Office for Nuclear Regulation

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PFCS Tactical Plan Inspection

Executive summary

Purpose of intervention

The purpose of this intervention was to gain regulatory confidence that the programme has a credible, underpinned plan to retrieve waste and decommission the Pile Fuel Cladding Silo (PFCS) and that SL have in place the appropriate arrangements to manage this plan going forward.

Interventions Carried Out by ONR

In February 2013, we wrote to Sellafield Limited to clarify our expectations following an inspection on the 21st February (SEL77382R, dated the 21st February 2013). SL responded to this letter (ONR/12/10691/03, dated 11th June 2013) and stated that a fully approved integrated schedule for MSSS would be issued in November 2013, we inspected this and found it to be adequate on the 26th and 27th November 2013.

SL also stated (ONR/12/10691/03, dated 11th June 2013) that an outline plan to reflect the integrated schedules would be ready for approval by the 19th December 2013 for the other programmes within Decommissioning Division, and we identified a sample of PFCS and First Generation Magnox Storage Pond (FGMSP) to inspect on the 11th & 12th February 2014. This inspection (TRIM Record: 2014/81090) identified that PFCS lacked an integrated tactical plan that supported risk and hazard reduction. A further inspection was planned for Oct 2014, in order to allow PFCS time to implement an improvement programme. 

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

In sampling PFCS, we judged that:

In sampling PFCS it is our opinion that the following areas required improvement:

Conclusion of Intervention

It is our judgement that the evidence provided by PFCS demonstrated a significant improvement from the previous intervention on tactical plans and programme management implementation.  ONR has an increased confidence in SL’s ability to manage the PFCS programme effectively and now has a credible baseline to hold SL to account against delivery of risk and hazard reduction.

Overall, we concluded from our inspection that the PFCS programme was able to articulate its significant journey in developing an integrated tactical plan, which had the clear and tangible benefits associated to the delivery of risk and hazard reduction. SL was able to demonstrate a coherent, credible, integrated programme with a significantly improved governance process.

ONR is encouraged by the improvements, but recognised that there are further areas of improvements to be incorporated/implemented and that momentum needs to be maintained to realise these benefits.  Based upon the evidence provided and our judgments, we believe a rating of 3 (adequate) is appropriate for LC35, noting that some areas for improvement were identified.