Office for Nuclear Regulation

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System based inspection of the safety case implementation for the kilns and furnaces in the Oxide Fuels Complex at Springfields

Executive summary

Purpose of intervention

The office for Nuclear Regulation (ONR) undertakes all regulatory interaction with the Springfields Fuels Ltd site against a strategy defined by the relevant ONR Programme. As part of that strategy an intervention was made to conduct a system based inspection of the safety case implementation for the kilns and furnaces in the Oxide Fuels Complex.

Interventions Carried Out by ONR

I carried out a system based inspection of the implementation of the safety case for the kilns and furnaces within the Oxide Fuels Complex. The inspection entailed examination of the site's arrangements for implementation of the safety case as required by the conditions of the site's nuclear licence, and a plant inspection to assess compliance with these arrangements. I was accompanied throughout the intervention by an ONR Control & Instrumentation inspector and the ONR Nominated Site Inspector.

Explanation of Judgement if Safety System Not Judged to be Adequate

The outcomes of the system based inspection at the Oxide Fuels Complex were that the safety systems inspected and the implementation of the safety case were judged to be adequate.

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

The licensee delivered a presentation and provided documentation to explain the key points of the extant safety case for the kilns and furnaces, and the arrangements for implementing the safety case. The opinion of the inspectors is that the arrangements presented adequately meet the requirements of the relevant ONR guidance.

A plant inspection was carried out in the Oxide Fuels Complex. Discussions were held with plant operators and maintenance personnel, and records of training, work instructions and maintenance activities were sampled. It was concluded from this inspection that the licensee adequately demonstrated compliance with its arrangements for the implementation of the safety case.

During the inspection regulatory advice was provided to enable the licensee to make further improvements in examination, inspection, maintenance and testing of the plant to further enhance safety. This advice was accepted by the licensee, and has been captured in the ONR issues database.

It was also noted during the inspection that the material condition of the plant was good, as was housekeeping. The licensee was also commended for implementing an improved method of plant identification.

Conclusion of Intervention

The inspection team concluded that the licensee has adequately implemented its nuclear safety case for the kilns and furnaces in the Oxide Fuels Complex.