Office for Nuclear Regulation

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Rolls Royce Marine Power Operations Limited - LC 28 compliance Inspection

Executive summary

Purpose of Intervention

This intervention at the RRMPOL Nuclear Fuel Production Plant (NFPP) and Neptune Reactor licensed sites at Raynesway; Derby was undertaken as part of the 2017/18 intervention plan and strategy.

Interventions Carried Out by ONR

The purpose of this intervention was to: attend update meetings with the Head of Safety, discuss concrete slump tests with the REGEN project, discuss record keeping with the CDM Quality Manager, and to carry out an LC 28 compliance inspection on the NFPP.

Explanation of Judgement if Safety System Not Judged to be Adequate

A systems based inspection was not carried out

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

A planned compliance inspection of LC 28 (Examination, inspection, maintenance and testing) found RRMPOL has made and implemented adequate arrangements for examination, inspection, maintenance and testing. ONR noted that over the last few years there have been significant improvements in the maintenance process for safety related plant. An improvement programme contains actions to ensure work instructions and management arrangements reflect the new process and I emphasised this must completed. The inspection found safety related plant is maintained in accordance with a plant maintenance schedule and maintenance is carried out and supervised by suitably qualified and experienced persons. Work is controlled by maintenance instruction and full and accurate records are kept. RRMPOL accepted an action to improve document control of the plant maintenance schedule and ONR will monitor to completion. I judged compliance with LC 28 was adequate and no formal improvement action was sought.ONR were pleased to note that revised contact shop and clean shop safety cases will be implemented in June and October 2017 respectively. This brings all the production plants modern standards safety cases to a consistent standard as defined in the latest version of the safety case manual. A new version of the chemical plant safety case is expected in December 2017.The Design Substantiation Reports for the contact shop have been issued and clearly describe maintenance requirements for safety related plant. I judged this was satisfactory and closes regulatory issue 5209.

Conclusion of Intervention

No shortfalls or issues were found which adversely affected nuclear safety or were judged to be of such regulatory concern as to require immediate action. One regulatory issue was raised relating to document control of the plant maintenance schedule.