Office for Nuclear Regulation

Hunterston B – Inspection ID: 22-038

  • Site: Hunterston B
  • IR number: 22-038
  • Date: May 2022
  • LC numbers: 22

Executive summary

Purpose of Intervention

This was a planned inspection of EDF Energy (EDFE) Nuclear Generation Ltd.’s Hunterston B Power Station, undertaken as part of the planned intervention strategy for the Operating Facilities Division (OFD) of the Office for Nuclear Regulation (ONR).

The work was carried out in accordance with the planned inspection programme contained in the Hunterston B Integrated Intervention Strategy (IIS) for 2022/23.

Interventions Carried Out by ONR

As part of this intervention the nominated site inspector for Hunterston B carried out a compliance inspection against:

  • Licence condition (LC) 22 – Modification or experiment on existing plant.

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

The site inspector also held meetings to monitor the progress being made on the End of Generation and Defuelling projects at the station.

Explanation of Judgement if Safety System Not Judged to be Adequate

No system based inspection was undertaken hence, this is not applicable for this intervention.

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

The inspection confirmed that a rigorous approach is being applied to the process to isolate and reduce the hazard from operational plant that is no longer required to support defuelling operations.

Conclusion of Intervention

The inspection against LC 22 did not identify any matters that could significantly undermine nuclear safety.  Therefore, a rating of Green, no formal action, was given.