Office for Nuclear Regulation

Hinkley Point C – Inspection ID: 51644

Executive summary

Date(s) of inspection:

  • March 2023

Aim of inspection

The aim of this inspection was to assess the adequacy of the implementation of NNB Generation (HPC) Ltd’s (NNB GenCo) ongoing conformance management of the civil engineering works at Hinkley Point C (HPC). The inspection examined in some detail the licensee’s compliance with Licence Condition (LC) 19 with regards to implementation of arrangements relating to civil engineering construction conformance.

Subject(s) of inspection

  • LC 19 – Construction or installation of new plant – Rating: Green

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

Responses to questioning were forthcoming, constructive, and provided confidence that civil engineering construction conformance, where sampled, was being adequately managed with due consideration of the risks involved.

A small number of minor observations were made.

Overall, I was satisfied with the adequacy of NNB GenCo’s ongoing civil engineering construction conformance arrangements.

On the basis of the evidence sampled, and in recognition of progress to date, I was satisfied that the arrangements in place comply with LC19.


My overall judgement for the inspection concludes that based on the evidence sampled, I was satisfied that arrangements in place address the key risks associated with managing civil engineering construction conformance. Furthermore, those arrangements are under implementation and are consistent with relevant good practice as defined in ONR regulatory guidance. This inspection highlighted no significant regulatory issues. All matters identified will be carried forward to routine level 4 interactions. The inspection was therefore rated as green.