Office for Nuclear Regulation

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Heysham 1 and 2 - Level 1 Emergency Exercise

Executive summary

Purpose of intervention

The purpose of this intervention was to carry out licence compliance inspections at the EDF Energy Nuclear Generation Limited’s (NGL’s) Heysham 1 and Heysham 2 power stations in line with the planned inspection programme contained in the Heysham 1 and Heysham 2 Integrated Intervention Strategy (IIS) for 2016/17. 

Interventions Carried Out by ONR

A team of ONR site safety and security inspectors, led by the operating reactors head of assessment, observed a joint level 1 demonstration of the on-site emergency response arrangements at both Heysham 1 and Heysham 2.

Explanation of Judgement if Safety System Not Judged to be Adequate

No safety system inspection was undertaken, hence this is not applicable.

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

The annual level 1 demonstration exercise took place on 18 January 2017 and was a joint exercise involving both Heysham 1 and Heysham 2.  This annual demonstration of the onsite emergency response capabilities of both Heysham 1 and Heysham 2 also supported the triennial offsite (level 2) demonstration of the local authorities’ emergency plan.  This intervention record discusses the onsite aspects of exercise kingfisher only, the offsite aspects will be reported separately.

ONR considered that the exercise scenario was a suitably challenging scenario designed to demonstrate not only the emergency response on each station, but the interaction between them, especially with respect to the management and deployment of the emergency services.  The scenario also provided an opportunity to demonstrate the alternative access to the stations.

Overall ONR judged that both stations arrangements for compliance with the Nuclear Site Licence Condition 11 merit an intervention rating of GREEN. For the Radiation (Emergency Preparedness and Public Information) Regulations, the emergency response arrangements have been also been suitably demonstrated as required.

However, in one area, the Access Control Point on Heysham 2, ONR considered that the demonstration of emergency response failed to meet the required standard.  In light of this ONR requires Heysham 2 to re-demonstrate this specific area in the presence of the ONR site inspector for Heysham 2 during one of the station shift exercises.  The detailed comments, including the identified opportunities for improvement, will be sent to the station directors in a separate letter. 

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

Conclusion of Intervention

From the evidence gathered during this intervention, I do not consider there to be any matters that have the potential to impact significantly on nuclear safety.    

At present, no additional regulatory action is needed over and above the planned interventions of Heysham 1 and Heysham 2 power stations as set out in their Integrated Intervention Strategies, which will continue as planned.