Office for Nuclear Regulation

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Demonstration of Revised Emergency Arrangements

Executive summary

Purpose of intervention

This report covers interventions at Magnox Ltd’s Dungeness A nuclear licensed site on 8-9 June 2015. This intervention was undertaken as a reactive inspection to support ONR's assessment of the licensees revised emergency arrangements which have been submitted to ONR for approval.

Interventions Carried Out by ONR

During this intervention, I carried out inspections to verify compliance with Licence Condition 11 – Emergency arrangements, through observation of the licensee’s demonstration of its emergency arrangements.

My inspections were carried out against the requirements of LC11 and ONR’s published inspection guidance associated with this Licence Condition.

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable – This was not a Safety Systems Inspection.

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

I met with the Lead Safety Representative and Shift Lead. We discussed the revised emergency arrangements and the views of the safety representatives and staff on the proposed arrangements. We also discussed the proposals from the Shift Leads perspective, and how key aspects of the proposals would operate in practice should the arrangements be implemented. The shift lead and safety rep considered the proposed arrangements could provide a workable set of arrangements, but some details still needed to be clarified.

I observed two demonstrations of the licensee’s proposed emergency arrangements with a team of ONR inspectors. The Licensee demonstrated that the new arrangements would be adequate to respond to incidents on the site. The licensee also demonstrated that the Shift Lead could provide adequate Command and Control to organise and respond to incidents.

During the demonstration ONR observed a number of areas of good practice and also identified some minor areas that the licensee could further improve.  

The licensee demonstrated that it has made significant improvements to the command and control capabilities of the Shift Leads in dealing with the events. The demonstration also showed that the proposed arrangements can provide benefit in terms of speed of initial response in setting up the incident control centres and communications. These are both important considerations for assessment of the arrangements and potential approval.

Despite the areas for improvement suggested above, I was satisfied that the licensee would be able to respond adequately to an incident on the site and its effects.

Conclusion of Intervention

Overall I gained adequate confidence from these demonstrations that the revised emergency arrangements could be effectively used to establish command and control in response to an incident on the site, and the licensee was able to implement actions to provide initial response in stabilising these events and to deal effectively with casualties.

The minor recommendations and actions identified were shared with the licensee at the exercise feedback, and will be followed up by the ONR Site Inspector with the licensee as the assessment of the arrangements progresses towards the regulatory decision whether to approve the revised arrangements.

NR Site Inspector as part of routine regulatory interactions with the licensee.