Office for Nuclear Regulation

This website uses non-intrusive cookies to improve your user experience. You can visit our cookie privacy page for more information.

Chapelcross Compliance Inspections

Executive summary

Purpose of Intervention

This report covers interventions carried out as part of ONR’s regulation of operations undertaken at the Magnox Chapelcross (CHX) site.

Interventions Carried Out by ONR

Five planned Licence Condition (LC) Compliance Inspections carried out against LC4 (Restrictions on nuclear matter on the site), LC5 (Consignment of nuclear matter), LC19 (Construction or installation of new plant), LC20 (Modification to design of plant under construction) and LC21 (Commissioning) together with two Series 100 interventions; Review of Regulatory Issues (102) and Safety Representatives (106).

The intervention was performed in line with ONR’s guidance requirements (as described in our technical inspection guides) in the areas inspected.

Explanation of Judgement if Safety System Not Judged to be Adequate


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

During my inspections at CHX I did not identify any safety significant matters requiring formal action from the Licensee. However, I did make the observations recorded below.

During the LC19 inspection I emphasised that Life Time Quality Records (LTQR) form the basis for substantiating new plant and will form the basis for future periodic reviews of safety and as such CHX need to manage their production in a timely manner.

CHX and Magnox Centre need to ensure that in-flight projects are aware of, and have assessed the impact of, impending changes being made to their LC20 Arrangements.

CHX should review their Basis of Design Document for the Interim Storage Facility to ensure that arguments presented are consistent and that control of any changes to these standards are appropriately controlled by CHX.

CHX need to review their commissioning activities associated with the ponds to ensure that appropriate Limits and Conditions have been identified and that categorisation of the associated documentation and processes is appropriate.

CHX need to ensure that personnel withdrawing sources from Source Stores can be readily identified by personnel within those stores as being authorised and in-ticket.

Conclusion of Intervention

I consider that No Formal Action (GREEN) is the appropriate rating for CHX compliance against LC19, LC20, LC21, LC4 and LC5.

My Observations made during this Inspection Week were minor in nature and do not impact upon the Green ratings allocated during this inspection.