Abstract
In the frame of a construction of a nuclear installation, it is necessary to lean on one or several technical references (codes and standards). These codes and standards evolve constantly, in particular to integrate know-how derived from feedback and technical evolutions. This diversity and the innovative characteristic are in opposition with a codification status, as code and standards are based on the recognized industrial feedback. By definition, no code exists for a real innovative system. Existing codes have thus to be adapted or completed to cover the special features of a new concept. Such a process has been engaged for the AFCEN RCC-MRx code (Rules for mechanical components of nuclear installations: high temperature, research and fusion reactors) to adapt the code to innovative reactors (Gen IV, Fusion...) new needs for many years now and we want to keep on introducing new concepts in the code regarding emerging needs as for Small Modular Reactor (SMR).
