Office for Nuclear Regulation

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Heysham 2 - LC7 inspection - Level 3 Exercise ‘Gibson’

Executive summary

Purpose of Intervention

The purpose of this intervention was to undertake regulatory inspections at EDF Energy Nuclear Generation Limited (NGL) Heysham Power Station in accordance with ONR’s Integrated Intervention Strategy (IIS) 2018-2019 for the Operating Reactors Sub-Division. 

Interventions Carried Out by ONR

I, as nominated site inspector together with a team of ONR inspectors witnessed the annual ‘level 1’ demonstration emergency exercise (LC11 Emergency arrangements) at Heysham 2.

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

Not applicable: No safety system inspection was undertaken during this intervention.

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

For the LC11 compliance intervention, ONR considered that exercise “Gibson” provided a robust challenge and the station’s response met its objectives, with the staff responding well in many parts.

A number of learning opportunities were identified. The most significant was in relation to the performance of the access control point (ACP) where command and control was not well demonstrated. Although it was judged that the ACP achieved the requirements of the exercise, it was judged that improvements can be made to improve team working and leadership.

 Notwithstanding this observation, exercise “Gibson” provided an adequate demonstration and the inspection has been rated as Green (no formal action).

Conclusion of Intervention

From the inspections and evidence obtained during this intervention, no matters have been identified that are likely to have significant impact on nuclear safety on the station at this time. Therefore I consider that no additional regulatory action arising from this visit is necessary currently, and the interventions for Heysham 2 power station, set out in the integrated intervention strategy, should continue to be implemented as planned.