To tackle this challenge, the MIMOSA project (MultI-recycling strategies of LWR SNF focusing on MOlten SAlt technology), launched in June 2022 and funded by the Euratom Research and Training Programme, will devise and demonstrate an integrated multi-recycling strategy of plutonium (Pu) and uranium (U) combining multi-recycling options in LWRs with recycling Pu and other transuranics (today considered as waste) in fast molten salt reactors (MSRs) using chloride salt. In this type of reactor, the fuel is dissolved in the salt circulating through the core, with such liquid form of fuel eliminating the major technological bottleneck of refabrication of solid fuels with high content of transuranics. To optimise costs and risks, the proposed strategy will also take advantage of existing European infrastructures such as the Orano reprocessing plant in La Hague (France).
Today, the maturity of such MSRs is low. For this reason, MIMOSA will focus on the demonstration of several key aspects of technical feasibility and performance that will push this advanced technology beyond the current state of the art and accelerate its deployment.
The MIMOSA consortium, led by nuclear fuel cycle service provider Orano, brings together twelve partners from four European countries, each bringing unique and complementary expertise to address the issue: industrial multi-recycling of Pu (Orano, EDF); MSR research and innovation (CNRS, Centrum výzkumu Řež / Research Centre Řež, NRG, Delft University of Technology); provision of innovative technologies (DIFFER – Dutch Institute for Fundamental Energy Research, Schunk Group); technical-economic assessment, scenario analysis, safety and security, and non-proliferation (Nuclear-21); Pu and minor actinide fuels (European Commission Joint Research Centre); development and exploitation of MSRs (Thorizon); managing and dissemination of collaborative research (ARTTIC ).
“With the MIMOSA project, we are building a European network centred on molten salt reactors and a community that believes in the contribution of this disruptive technology to the sustainability and acceptability of tomorrow’s nuclear industry,” explains Isabelle Morlaes, MIMOSA project coordinator and Senior Vice President, MSR initiatives Coordination at Orano.
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For more information about the MIMOSA project, contact the project office.