RNR Sodium, the SFR program and the ASTRID prototype

The French research program on sodium fast reactors (SFR) was launched in 2007 and 4 axis of development were defined. First axis: proposing the design of an efficient fast reactor core with an enhanced safety level and the possibility to burn minor actinides. Second axis, proposing a better resistance to major accidents and to external attacks. Third axis, optimizing the energy conversion system while reducing sodium risks. And fourth axis: optimizing the economic competitiveness of the nuclear plant. The Astrid project means the design and construction of the Astrid reactor (Advanced Sodium Technological Reactor for Industrial Demonstration). This project implies the upgrading of the Masurca reactor that will be used to validate the innovative options of the Astrid's core. A preliminary draft of Astrid will have to be proposed by the end of 2012. (A.C.)