Office for Nuclear Regulation

Dungeness A – Inspection ID: 22-035

  • Site: Dungeness A
  • IR number: 22-035
  • Date: June 2022
  • LC numbers: 11

Executive summary

Purpose of Intervention

This inspection, one of a series of planned inspections for 2022 at the Dungeness A nuclear site, was undertaken to judge the adequacy of compliance with licence condition (LC) 11 – Emergency arrangements.

Interventions Carried Out by ONR

During this inspection ONR assessed the Level 1 Emergency Exercise “Dublin”.  This inspection consisted of observing Magnox Limited staff at Dungeness A nuclear licensed site deploying its emergency arrangements to control a simulated emergency incident.

Explanation of Judgement if Safety System Not Judged to be Adequate


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

In my opinion the planning for the exercise was comprehensive, and the scenario was sufficiently challenging for Dungeness A site to adequately demonstrate its arrangements for dealing with an accident arising on the site.  I identified a number of points of good practice but also made a number of observations, which were conveyed to the licensee in the post-exercise de-briefing meeting.  A Level 4 Regulatory Issue has been raised to address a key observation made during the exercise with regards to the role of the duty controller during an incident.

Conclusion of Intervention

Taking into account the exercise planning/scenario and the observations made by the ONR team during the exercise, I consider the emergency exercise to be an adequate demonstration of the site’s emergency arrangements made under Licence Condition 11.