Communication Dans Un Congrès Année : 2023

MOSARWASTE, a French institutional project on molten salt reactor ultimate waste management

Résumé

A renewed interest in molten salt reactors with liquid fuel is currently noticed around the world. Indeed, their potential in terms of fissile material management (on-line supply of fuel salt), their intrinsic safety (strong negative temperature coefficient of reactivity, low pressure, solidification of the salt in the event of leakage), the possible flexibility of the design (AMR or bigger reactors) and the reduction of the environmental impact due to the reduction of long-lived high-level waste in the case of actinide burner are important advantages of this technology. Moreover, the ambition of carbon neutrality by 2050 and the current political initiatives promoting the emergence of innovations in this field accentuate this trend. Today, many molten salt reactor concepts have emerged around the world, with different fuel cycles, sizes or even salts (fluorides and chlorides in particular). In France, the governmental France 2030 call for proposals in the nuclear field aimed at developing or maintaining the essential skills in this area and at strengthening the competitiveness of companies by modernizing them, as well as at encouraging innovation, particularly in the domain of radioactive waste management. In this context, the MOSARWASTE project, standing for MOlten Salt Reactor WASTE management, has been awarded funding for a four-year period (2023-2026) to focus on the management of the ultimate waste generated by a chloride-based actinide burner molten salt reactor. The CEA (French Alternative Energies and Atomic Energy Commission) is the coordinator of this project, in which Orano Group and the CNRS (French National Centre for Scientific Research) are also consortium members. In the framework of the MOSARWASTE project, five scientific work-packages will be carried out as follows. The different waste streams from spent salt will be described and quantified. Their treatment and conditioning routes will be studied, as well as their impact on deep geological disposal. The interim storage of the spent salt prior to reprocessing will also be investigated with a focus on corrosion resistant packages. Finally, a comparison of waste produced by molten salt reactor technologies with chloride and fluoride salts will be addressed..
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Dates et versions

cea-04831422 , version 1 (11-12-2024)

Identifiants

  • HAL Id : cea-04831422 , version 1

Citer

Magaly Ribet, Annabelle Laplace-Ploquin, Anne Saturnin, Johann Martinet, Sylvie Delpech, et al.. MOSARWASTE, a French institutional project on molten salt reactor ultimate waste management. 12th International Conference on Molten Salt Chemistry and Technology, Nov 2023, Kyoto, Japan. ⟨cea-04831422⟩
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