Executive summary
Date(s) of inspection: May 2024
Aim of inspection
The aim of my inspection was to provide ONR with regulatory confidence in the implementation of the arrangements established for the Torness (TOR) Reactor 1, 2024 Statutory Outage (S13R1). My inspection was focused on the mechanical engineering aspects of the Statutory Outage activities.
This was a planned inspection and part of the 2024/25 ONR integrated inspection strategy for the operating reactors sub division.
Subject(s) of inspection
- LC28 - Examination, inspection, maintenance and testing - Rating: Green
Key findings, inspector's opinions and reasons for judgement made
My inspection activities were undertaken at EDF Energy NGL, Torness (TOR) and focused on the arrangements established for the completion of the TOR reactor 1 SO (S13R1) and to provide ONR with regulatory confidence in there implementation. My inspection focused on the Mechanical Engineering (ME) structures, systems and components (SSCs) important to safety being maintained during the TOR reactor 1 SO (S13R1) in compliance with License Condition 28.
The key themes and areas of focus for my inspection were:
- Inspection and observation, through plant walkdown of the condition of ME SSCs, where available.
- Maintenance schedule activities focused on Gas Circulators, Boron Ball Injection System and Circulator Auxiliary Cooling System (CACS).
- Review of Outage Activities:
- ME SSCs examination, inspection, maintenance and test schedules
- Progress against Outage activities specified in Outage Intentions document
- Significant emergent ME issues, where applicable and resultant resolution
- Completed reactor 1 2024 Outage ME work activity documentation
- ME Outage activity deferrals, where applicable
From my sample inspection. I judged that EDF Energy NGL adequately demonstrated the implementation of the arrangements established for the TOR reactor 1SO (S13R1) activities, including inspection and observations of the actual condition of the stations SSCs, progress against the stations reactor 1 SO (S13R1) plan, management of emergent issues and completion of work order cards, in accordance with License Condition 28.
Conclusion
Through my Mechanical Engineering focused sample inspection undertaken of the Torness Nuclear Power Station Reactor 1 2024 Statutory Outage Activities, I identified a small number of observations and provided some regulatory advice, but I judge that EDF Energy NGL were able to adequately demonstrate the implementation of the arrangements in accordance with licence condition 28 at TOR.
Based on this inspection there were no issues identified from my Mechanical Engineering focused inspection which would prevent ONR granting consent for TOR to return to service at this point.