Executive summary
- Date(s) of inspection: May 2024
Aim of inspection
The aim of the inspection was to inspect NNB Generation Company (HPC) Ltd's (NNB GenCo) arrangements for compliance with Licence Condition (LC) 19, construction or installation of new plant, in relation to civil engineering construction assurance. LC19 requires that where the licensee proposes to construct or install any new plant, which may affect safety, the licensee makes and implements adequate arrangements to control the construction or installation.
The objective of the inspection was to obtain evidence in relation to the adequacy of NNB GenCo’s arrangements for the control of structural steelwork installation at Hinkley Point C (HPC). The particular focus of the inspection was on the implementation of arrangements to ensure conformant construction of civil engineering elements, in accordance with the design intent and safety case.
Subject(s) of inspection
- LC19 - Construction or installation of new plant - Rating: Green
Key findings, inspector's opinions and reasons for judgement made
The evidence sampled provided confidence that the implementation of arrangements for structural steel installation and quality exceptions process were adequately controlled. Furthermore, that where sampled, the installation of structural steel elements was found to align with the design intent and the safety case.
This inspection highlighted no significant regulatory issues.
A small number of minor observations were made.
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.
Conclusion
On the basis of the evidence sampled, I judge that NNB GenCo has implemented corporate arrangements in compliance with LC19 (construction or installation of new plant). In relation to the specific areas sampled, I judge that NNB GenCo’s implementation of arrangements for structural steel installation were adequately controlled. I also judge that the civil engineering contractor and sub-contractors' arrangements in relation to the installation of structural steel are being implemented and are aligned with relevant good practice. Overall, I was satisfied with the adequacy of NNB GenCo's ongoing arrangements for controlling the installation of structural steelwork. 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. Upon consideration of the ONR guidance in relation to inspection ratings, I judge that a rating of Green (no formal action) is appropriate.