Office for Nuclear Regulation

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Barnwood Central Technical Organisation (CTO)

Executive summary

Purpose of Intervention

The purpose of this intervention was undertake inspection activities on the theme of ‘engineering governance' at EDF Energy Nuclear Generation Limited's Central Technical Organisation (CTO) in line with ONR's planned inspection programme contained in the Corporate Integrated Intervention Strategy (IIS) for 2017/18.

Interventions Carried Out by ONR

The corporate inspector supported by specialist engineering, quality and LMfS inspectors performed a themed inspection on the topic of Engineering Governance. No Licence Conditions were formally rated.

The intervention focused upon the following aspects of the NGL management system.

The intervention was structured around a series of discussions with CTO engineers, Group Heads and Managers. Discussions were also held with industrial safety and the support function both of whom sit outside of engineering.

Explanation of Judgement if Safety System Not Judged to be Adequate

This was not a Safety System Based Inspection.

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

The management system in relation to engineering is good. There is good oversight of process compliance from the fleet management organisation and oversight of compliance with company technical standards (CTS) applied consistently.

The scope of CTSs has been derived organically or reactively to significant events and so potentially there are minor gaps in the scope of CTSs. It is the responsibility of chief engineers, peer and user groups to develop the CTS suite of documentation.

Industrial safety has a comprehensive key risk indicator tool that allows industrial safety to maintain oversight of station performance and engineering.

The user groups that we sampled are functioning well and the CTO training for engineers was very structured, well developed and comprehensive.

CTO is mainly organised by discipline but system engineering at the stations are multi-disciplinary. Consideration could be given to developing system specific route maps that contain the relationships between all technical policies, CTSs, TGNs and potentially EANs & COPs. These could be used as an input into station / system specific mentor guides.

During previous station based inspections we found that station baselines do not consider the mix of disciplines required on station. Although station resources are the responsibility of individual station's, the CTO, in our opinion, should have a view on whether the stations have the resources and discipline mix to deliver the work programme.

Conclusion of Intervention

This intervention identified no significant shortfalls in CTO arrangements or training. A number of observations have been fed back to CTO for consideration - these relate to suggestions that would, in our opinion, be beneficial to systems engineers on station.