Office for Nuclear Regulation

Hinkley Point C – Inspection ID: 52465

Executive summary

Date(s) of inspection:

May 2023

Aim of inspection

The aim of the inspection was to gain assurance that appropriate arrangements are in place for conformant construction of the on-site installation of the unit 2 inner containment liner, in accordance with the design intent and safety case.

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 the civil engineering works associated with the unit 2 containment liner, where sampled, were 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 Generation Company (HPC) Ltd’s (NNB GenCo) ongoing arrangements associated with the fabrication and installation of the unit 2 containment liner, and that those arrangements were being adequately implemented.

On the basis of the evidence sampled, and in recognition of progress to date, I was satisfied that the arrangements in place comply with Licence Condition (LC) 19.


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 the unit 2 containment liner. Furthermore, those arrangements are under implementation and are consistent with relevant good practice.

This inspection highlighted no significant shortfalls. The minor matters identified will be carried forward to routine level 4 interactions. The inspection was therefore rated as green.