Office for Nuclear Regulation

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Hunterston A inspection week

Executive summary

Purpose of Intervention

This inspection was carried out as one of a series of planned inspections of operations undertaken at the Magnox Ltd Hunterston A (HNA) site.

Interventions Carried Out by ONR

Five Compliance Inspections relating to Licence Condition (LC) 4 (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) were undertaken together with an Action/Issue review and a meeting with Site Safety Representatives.

Explanation of Judgement if Safety System Not Judged to be Adequate


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

It was identified that HNA do not currently have, within their arrangements, definitions of nuclear matter and excepted matter.

Life Time Quality Records (LTQR) are essential in both demonstrating adequacy of construction and in underpinning safety justifications for operational plant. It was not clear that sufficient priority is currently being given by HNA to producing these records during their current project programme.

Overall, I consider that HNA have responded well to findings made by ONR in November last year relating to the use of concessions to progress design changes and sign-off of commissioning work.

Conclusion of Intervention

I consider that HNA compliance with the Licence Conditions inspected was shown to be adequate.

HNA staff took actions to review their arrangements and incorporate definitions of nuclear matter and excepted matter, where appropriate, and to ensure that LTQRs associated with current projects are appropriately progressed such that they are all complete on project handover.