Office for Nuclear Regulation

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Observation of EDF Energy Nuclear Generation Limited Transport Emergency Exercise Treebridge

Executive summary

Purpose of Intervention

This intervention was carried out under The Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2009 (CDG) as amended, Schedule 2 Radiological Emergency, Section 5: Review and Testing of Emergency Plan, to observe EDF Energy Nuclear Generation Limited (NGL) implement its transport emergency arrangements.

Interventions Carried Out by ONR

The intervention evaluated all elements of NGL’s transport emergency arrangements:

Explanation of Judgement if Safety System Not Judged to be Adequate

This was not a System / Structure Based Inspection

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

It was considered that NGL adequately implemented its transport emergency arrangements with all elements responding to the event.  Some observations made indicated that control room protocol in the NGL Barnwood CESC could be improved by personnel clearly identifying their role, improved briefing, and clarity in status board information.

It was considered that the development of the recovery plan was rushed with no evidence gathered to address the following elements:

Conclusion of Intervention

It was considered NGL had adequately demonstrated the implementation of its transport emergency arrangements and that, in general, the exercise objectives had been met with possible improvements identified as:

These findings will be tracked by ONR. There were no significant issues identified hence the inspection has been rated Green.

There were no findings from this inspection that could significantly undermine nuclear safety.  At present, no additional regulatory action is needed over and above the planned interventions as set out in the 2019/20 Integrated Intervention Strategy.