Office for Nuclear Regulation

Reactive LC 10 compliance inspection and intelligence gathering

Executive summary

Purpose of Intervention

This was an unplanned LC 10 (Training) compliance inspection at EDF Energy Nuclear Generation Limited’s (NGL’s) Dungeness B power station. It was undertaken in conjunction with the 2018-19 planned intervention strategy for the Operating Facilities Division (OFD) of the Office for Nuclear Regulation (ONR).  The LC10 inspection was also supported by an ONR conventional health and safety specialist inspector.

Interventions Carried Out by ONR

During this intervention, the following key activities were undertaken:

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

Explanation of Judgement if Safety System Not Judged to be Adequate

No system based inspection undertaken, hence not applicable.

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

I observed one of the station’s emergency shift training exercises that have been rolled out since 10th October 2018 of which there have been five to date. This exercise scenario consisted of a nuclear emergency initiated by a seismic event which included casualty recovery.

I also undertook routine engagement and intelligence gathering with the station’s leadership team and the independent nuclear assurance team to discuss the corrosion issues, the main steam pipeline repair and the double reactor outage at DNB. I judged that the station is continuing to manage the extended periodic shutdown including its event recovery activities for the main steam line event recovery programme.  No significant nuclear safety concerns were raised during this visit.

Conclusion of Intervention

In relation to unplanned LC10 compliance inspection, I judge that an inspection rating of Green (no formal action) is warranted on the basis that the training provided to the team responding to the incident met the requirements of LC11 (6) in the provision of providing appropriate training, to ensure that persons responding to an emergency on the site are aware of the roles and duties they are expected to perform.