Office for Nuclear Regulation

Chapelcross – Inspection ID: 52048

Executive summary

Date(s) of inspection:

  • December 2022

Aim of inspection

To observe table top emergency excercise and undertake joint inspection with SEPA of the MAETP.

Subject(s) of inspection

  • LC 07 – Incidents on the site
  • LC 10 – Training
  • LC 11 – Emergency arrangements
  • LC 21 – Commissioning
  • LC 24 – Operating instructions
  • LC 27 – Safety mechanisms, devices and circuits

Key findings, inspector’s opinions and reasons for judgement made

The Chapelcross MAETP plant was inspected to determine whether the safety systems, structures and components (SSCs) are able to adequately fulfil their safety duties. This part of the visit was undertaken as a joint inspection in conjunction with SEPA.

An emergency exercise, ‘Exercise Goldcrest’ was observed to assess the adequacy of the arrangements for command and control during emergency situations.

The inspection also included a walkdown of reactor building 2 to assess the general condition of the shutdown plant and buildings.



I was satisfied that the MAETP plant is soundly designed and adequately specified. Due to the preliminary nature of the documentation, it was agreed with SEPA that the plant would be inspected again once ready for active commissioning. This is due to be April 2023. A compliance rating at this stage would be inappropriate.

LC 11 Emergency Arrangements

Based on my observations in the CCR and follow up discussions with the other emergency exercise observers I consider the arrangements for emergency response to be Adequate (Green).

LC 7 Incidents on the site

Based on the resolution of the records processing and regular weekly reviews of the Q-Pulse reports, I am satisfied that adequate arrangements are in place for accent and incident recording on the site. Therefore I rate compliance with LC 7 as Adequate (Green).