The purpose of the intervention was for the Office for Nuclear Regulation (ONR) to assess the interim design modifications process being operated by NNB Generation Company (NNB GenCo) Limited for the Hinkley Point C project - specifically the training and communications aspects.
The topics covered by the intervention were:
Feedback from ONR on our observation of recent modifications screening and mini Design Assurance Coordination Committee meetings;
Overall we were satisfied with the arrangements being implemented by NNB GenCo for training and communication in relation to the HPC interim design modifications process. Roles and responsibilities in both NNB GenCo and the Responsible Designer are well defined and the organisational structure and lines of communication are clear. A proposal to enhance handling of NNB GenCo queries in relation to modifications is currently being considered. The interim modifications process, although being applied to many more modifications than originally envisaged, is enabling NNB GenCo to demonstrate 'intelligent customer' oversight of the Responsible Designer, while developing its understanding of the design and design processes.
NNB GenCo's approach to training is satisfactory, covering the interim modifications process as well as UK context and categorisation of modifications, delivered by the Safety Case Configuration team. NNB GenCo is behind plan in delivering the volume of training it initially set out in January 2014 but considers that this has not impacted the modifications process.
We noted that NNB GenCo has a significant forward workload, not only in terms of training delivery, but also completion of technical reviews as part of acceptance of design Reference Configuration 1. NNB GenCo is currently developing detailed plans for how this will be delivered.
Overall we are satisfied with the training and communications carried out so far by NNB GenCo in relation to the HPC interim design modifications process. We note however the significant workload associated with completion of technical reviews and training during the remainder of 2014 and will use future interventions to monitor NNB GenCo's progress against its programme.