Office for Nuclear Regulation

Planned Intervention and attendance at the Annual review of Safety, Security and Environment

Executive summary

Purpose of intervention

This report covers an inspection of Magnox Ltd’s Harwell nuclear licensed site on 5th and 6th August 2015. This inspection was undertaken as part of a programme of planned interventions as outlined in the IIS plan for 2015/16.

Interventions Carried Out by ONR

During this intervention, I carried out compliance inspections against the following licence conditions:

Whilst on site, I attended the licensee’s annual review of safety, environment and security with an ONR Project Inspector.  

My inspections were carried out against the requirements of ONR's published inspection guidance associated with the above Licence Conditions.  The inspection comprised office-based examination of procedures and records, interviews with staff and work place inspections.

Explanation of Judgement if Safety System Not Judged to be Adequate

This intervention did not include an inspection of a safety system.

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

I have reviewed the licensee’s arrangements for compliance to LC25. I have identified that there is no obvious link between the licensee’s arrangements and the requirement to record the amount and location of all radioactive material, including nuclear fuel and radioactive waste, used, processed, stored or accumulated on the site at any time. The licensee has accepted this finding and I have added an additional action to an existing ONR issue. Despite this finding, I am satisfied that the licensee’s arrangements are compliant to LC25.  

In relation to LC26, based on the evidence provided, I consider that overall the licensee has adequate arrangements for control and supervision of operations and has implemented these adequately. I am satisfied that operations within the B462 complex that may affect safety are being properly supervised. I have identified one instance where control of keys that could provide access to high hazard areas fell below the standards expected. I have required the licensee to ensure that staff and management are aware of the need to controlling such keys. The licensee has accepted this finding. Despite this finding, I judge that the licensee has demonstrated adequate arrangements for control and supervision of the area inspected.

In relation to annual review of safety, security and environment for Harwell and Winfrith, ONR considered that the licensee had been sufficiently self-critical and had identified appropriate areas for improvement. ONR judged that both sites are currently properly managed and control their hazards adequately.   

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 conclude that there are no matters that may impact significantly on nuclear safety. However a number of improvements have been identified that the licensee has agreed to implement.