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.

Site Inspection - Chapelcross

Executive summary

Purpose of intervention

This report covers interventions in pursuit of the ONR integrated intervention strategy for Chapelcross, in particular to address regulatory issues identified as part of Inspection plan and carry out the planned Compliance inspections.

Interventions Carried Out by ONR

This report covers interventions at Chapelcross A to address Compliance inspection as follows:

Explanation of Judgement if Safety System Not Judged to be Adequate

N/A.

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

Only the Compliance inspections and follow–up inspections are included in the executive summary as all other interventions are for information only.

IRR99 - The purpose of the intervention was to undertake an inspection to judge the licensee’s compliance with the requirements of The Ionising Radiations Regulations 1999.  In conclusion, for the IRR99 inspection, it was considered that an IIS Rating of 3 (adequate) was appropriate. 

LC 32 - The purpose of the intervention was to undertake an inspection of the license arrangements and implementation under LC 32.  LC 32 ‘Accumulation of Radioactive Waste’ requires the licensee to make and implement adequate arrangements for minimising so far as is reasonably practicable the rate of production and total quantity of radioactive waste accumulated on site at any time and for recording the waste so accumulated.   There was consideration of the site Radioactive Waste Management Case, which raised some minor issues regarding reactor ILW and the walk down of the LLW storage and treatment areas raised a few areas for improvement around storage of redundant flask and also the storage and disposal of LLW liquids.  In conclusion, for Site Licence Condition 32, ‘Accumulation of Radioactive Waste’, it was considered that an IIS Rating of 3 (adequate) was appropriate.

 LC 11 - The arrangements and implementation under LC 11.  LC 11 ‘Emergency Arrangements’ requires the licensee to make and implement adequate arrangement for dealing with any accident or emergency arising on the site and their effects. ONR considered that there were a number of areas for improvement within the implementation of findings of the last level 1 exercise. ONR also noted the EMIT of the Beyond design basis container and considers that the shortfalls in the maintenance arrangements must be addressed. As a balanced view of the LC 11 aspects of the inspection, it was considered that an IIS Rating of 4 (Below Standard) was appropriate.  This is primarily around the lack of preparedness and maintenance of the beyond design basis container, which may also have implications across the Magnox fleet.  ONR will raise a level 4 issue on this shortfall and write to site seeking commitments as to when and how this shortfall will be addressed.

Conclusion of Intervention

The inspection raised issues regarding the arrangements under LC 11 and thus a letter will be sent to site and issue placed on the issues database for closure.