Office for Nuclear Regulation

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Tradebe Inutec Ltd, Winfrith Pre Licensing Emergency Demonstration Exercise

Executive summary

Purpose of intervention

Tradebe Inutec Ltd has applied to ONR for a Nuclear Site Licence for its undertakings on the Winfrith site. In order to determine this application, ONR is working to an inspection and assessment plan. This plan identifies the witnessing of an exercise to judge the adequacy of Tradebe Inutec's emergency arrangements required to become a licensee

Interventions Carried Out by ONR

During this intervention, an ONR inspection team assessed the Level 1 emergency exercise "AMBER".

My assessment of the emergency demonstration exercise was carried out against the requirements of ONR's published inspection guidance associated with Licence Condition 11, Emergency Arrangements. This inspection consisted of observing Tradebe Inutec Ltd staff deploying its emergency arrangements to control a simulated emergency event.

Explanation of Judgement if Safety System Not Judged to be Adequate

No safety system was inspected during this intervention.

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

The emergency exercise scenario provided sufficient challenge to Tradebe Inutec Ltd's safety and security arrangements, proportionate to the hazards at the facility.

Tradebe Inutec Ltd demonstrated good casualty handling and contamination control at the local incident level to bring the immediate situation under control to protect people and the facility. However, Tradebe Inutec Ltd did not demonstrate adequate command and control of the overall incident at a site level nor in communications between the local incident control point and the emergency control centre.

Tradebe Inutec Ltd's procedures for site lockdown and searching of the facility were found to be inadequate. Staff not directly involved with the emergency exercise were observed to be acting outside of the requirements of the exercise in play.

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

Taking into account the exercise planning/ scenario and all the ONR team's exercise observations I considered the emergency exercise to be an inadequate demonstration of the site's emergency arrangements. Particularly, ONR identified the need for changes in the operation and design of the ECC to improve command and control.

Tradebe Inutec Ltd has been asked to make improvements to its emergency control centre and undertake a table top exercise to demonstrate that the ECC is fit for purpose.

Taking all these factors into account I have assigned an IIS rating of Amber.