Office for Nuclear Regulation

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RRMPOL - INA Function

Executive summary

Purpose of Intervention

This intervention was to sample the effectiveness of the Independent Nuclear Assurance (INA) function at Rolls Royce Marine Power Operations Limited (RRMPOL), Raynesway Site, which was undertaken in accordance with ONR’s regulatory strategy for propulsion sites.

The intervention considered RRMPOL’s organisational capability and capacity within the INA function; its independence to be able to raise issues of concern with senior level staff; the adequacy of advice given and timely response to findings; and to broadly assess the cultural acceptance of challenge within the organisation and the remit/mandate of the function.

Interventions Carried Out by ONR

The intervention was performed in line with ONR’s guidance requirements (as described in our technical inspection guides) in the areas inspected.

This inspection was primarily conducted using the following guide: Challenge Culture, Independent Challenge Capability (including an Internal Regulation function) and the Provision of Nuclear Safety Advice, NS-TAST-GD-080 - Rev 2.

This intervention was carried out through a series of structured discussions with key personnel from Internal Regulation and Operational departments, including relevant Directors. The intervention also included a sample observation of an ongoing INA engagement relating to organisational capability within RRMPOL.

Explanation of Judgement if Safety System Not Judged to be Adequate

This was not a Safety System Inspection.

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

In my opinion, the internal advice and challenge function within RRMPOL has a clear mandate from the Company Board and is staffed with highly respected and competent individuals, which provides an effective challenge and advice capability to the business.  

There are number of observations made within the report, which RRMPOL may consider as part of maintaining and developing a sustainable capability.

Based on this intervention, I consider the effectiveness of the Independent Nuclear Assurance function in providing effective assurance and advice to the RRMPOL Board as Green.