Purpose and scope
The RCC-MRx code was developed for sodium-cooled fast reactors (SFR), research reactors (RR) and fusion reactors (FR-ITER).
It describes the rules for designing and building mechanical components involved in areas subject to significant creep and/or significant irradiation. In particular, it incorporates an extensive range of materials (aluminium and zirconium alloys in response to the need for transparency to neutrons), sizing rules for thin shells and box structures, and new modern welding processes: electron beam, laser beam, diffusion and brazing.
A new edition of the RCC-MRx code was released in 2015. This edition reflects feedback on the use of the 2012 edition and/or its 2013 addendum, especially in current projects and mainly the Jules Horowitz reactor and the Astrid project. Examples include the inspection and welding procedures for aluminum, as well as the code’s improvements and new structure relating to components used at high temperatures (design rules, welded assemblies and material properties). Initial feedback on the code’s application also helped analyze and integrate additional data on the Eurofer material used by the fusion community.
Furthermore, this edition pays special attention to ensuring consistency between RCC-MRx and the other reference documents that interact with the code, including RCCM, European and international standards.
For more details about RCC-MRx
An erratum for RCC-MR 2007, RCC-MRx 2012 and 2015 has been published, it is available for download here after : Erratum Appendix A16.
An errata has been published for RCC-MR code, Edition 2007, the appendix is available here:
Erratum RCC-MR 2007 - Appendix A6
A erratum for RCC-MRx 2012 has been published, it is available for download here after :
Errata 1_RCC-MRx 2012 - FR (Version Française),
Errata 1_RCC-MRx 2012 - EN (English version),
Errata 1_RCC-MRx 2012 mod 1 - FR (Version française),