Office for Nuclear Regulation

Conduct of Inspection in support of IIS

Executive summary

Purpose of intervention

In line with the 2015/16 inspection plan for Dounreay I carried out planned inspections and other interventions to provide confidence that Dounreay Site Restoration Ltd. (DSRL) is controlling its hazards properly and complying with its statutory obligations.

Interventions Carried Out by ONR

The main purpose of this intervention was to observe the annual Level 1 demonstration of emergency arrangements made under Licence Condition 11for which I was supported by other ONR inspectors. Other routine meetings were attended and a specialist inspector had discussions on internal dose assessment under the Ionising Radiations Regulations 1999.

Explanation of Judgement if Safety System Not Judged to be Adequate


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

 The exercise scenario postulated a fire within the DFR ion exchange plant during transfer of a waste drum containing intermediate level waste resins.  The initiating event involved a vehicle collision.  Exercise play was observed in the Site Control Centre, Incident Control Centre, scene of incident and Occupational Health Department (OHD).

The emergency response organisation closed up effectively and the control centres ran smoothly.  The additional manpower made available to the Dounreay Fire and Rescue Service provided improved resilience. A satisfactory standard of casualty handling and treatment was observed.

The Incident Control Centre was effectively managed and delivered a carefully considered recovery plan.  Overall it was an adequate demonstration of emergency arrangements. 

Conclusion of Intervention

The intervention did not identify any matter impacting on nuclear safety that required immediate regulatory action.