Context and challenges
As part of the Units Conformity Reviews, numerous controls are to be carried out on the nuclear units, and in particular the control of the anchoring of the equipment to the support structures. The conformity examination consists in comparing the actual state of the installation with the safety standards and the applicable regulations, including in particular its creation authorization decree and the prescriptions of the NSA (Nuclear Safety Authority).
Anchorages refer to mechanical elements that play a role in the interface between the equipment and the support. The anchor consists of an anchor plate or lock and rods that integrate with the supporting concrete. The anchor in the broad sense includes the part of the concrete which ensures the sealing and the diffusion of the forces transmitted by the rods and the plate.
The conformity control of an anchorage currently consists for the CNPE (National Centre of Electricity Production) in:
As part of this project, this client, a leader in the nuclear sector, called on Assystem to carry out on-site control, calculations and follow-up of modifications to the CNPEs as part of regulatory compliance of anchors (EIPS: Equipment of Protected Interest for Safety).
Key skills: mechanical calculations, systems for anchoring equipment to civil engineering, client repositories, etc.
Study volume of around 1000 anchors per nuclear unit