Planned compliance inspection - Chapelcross
- Site: Chapelcross
- IR number: 15-152
- Date: February 2016
- LC numbers: 11, 34, 35
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 to address Compliance inspection as follows:-
- LC 11 – Emergency arrangements
- LC 34 – Leakage and escape of radioactive material and radioactive waste
- LC 35 – Decommissioning
Explanation of Judgement if Safety System Not Judged to be Adequate
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.
- LC 11 Emergency arrangements - The purpose of the inspection was to follow up on a previous LC 11 inspection where the maintenance of the Beyond Design Basis (BDB) container on site was found to be inadequate. ONR previously raised an issue as result of this inspection and after obtaining assurance from the site that the container was now being properly maintained, ONR had come to confirm and verify that this was the case. As a result of the inspection, ONR now considers that the maintenance of the BDB equipment is adequate and the issue has been closed. Some further advice was provided on opportunities to improve the use of the BDB container equipment.
- LC 34 ‘Leakage and escape of radioactive material and radioactive waste” requires the licensee to ensure, so far as is reasonably practicable, that radioactive material and radioactive waste on the site is at all times adequately controlled or contained so that it cannot leak or otherwise escape from such control or containment. The inspection examined various low level waste storage areas covering both liquid waste and solid waste storage. ONR found a number of items of radioactive material and waste where the applied standards of containment and control were Significantly Below Standard. Some radioactive waste items were found with degraded containment and there were indications that some packages may be leaking. Opportunity exists to better protect the radioactive waste packages and apply a more robust radiological surveillance regime to ensure that leaks or escapes of radioactive material cannot occur without being detected. ONR intends to issue an enforcement letter to the licensee that will secure delivery of an appropriate improvement programme.
- LC 35 ‘Decommissioning’ requires the licensee to make and implement adequate arrangements for the decommissioning of any plant or process which may affect safety. The site decommissioning programme is being revised to reflect changes to the Magnox decommissioning and waste strategies. These corporate changes are being considered by ONR and for the time being ONR considers the site decommissioning programme to be adequate. The revised decommissioning programme will require to be justified and align with the lifetime plan for the site.
Conclusion of Intervention
The inspection found that the implementation of the arrangements for LC 11 and LC 35 were to an adequate standard. In the areas inspected the implementation of the arrangements for LC 34 were found to be significantly below standard. An enforcement letter will be issued to secure delivery of an appropriate improvement programme.