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- W2338122419 abstract "To develop a sustainable nuclear fuel cycle aiming at cleaner waste streams (containing only the short-lived fission products) an integrated partitioning and transmutation (P&T) scheme can help to significantly reduce the quantities of long-lived radionuclides consigned to waste. In addition to plutonium, this means that the minor actinides (MAs), mainly neptunium, americium, and curium, have to be recycled. Many issues and options are being discussed and studied at present, and in this chapter the open issues regarding the selection of the optimal route are discussed. The choice is between individual treatment of the relevant elements and a grouped treatment of all actinides together; that is, between a heterogeneous mode where MAs are separately treated and a homogeneous mode where all actinides are coprocessed. Regarding separation, the two main options are aqueous and dry reprocessing, which should not be seen as competing technologies but as solutions to be implemented depending on the boundary conditions governing the deployment of a new reactor and fuel cycle system. Separation mechanisms involved in the various process options should be well understood and necessary complete basic data sets should be provided to make the best use of simulation and modeling tools to develop efficient and reliable separation schemes. Although some scale-up experiments have already been performed, all of the advanced separations processes proposed today need considerable additional efforts to reach industrial maturity. Also safeguarding schemes have to be developed in this context, especially in the case of dry processes. Finally, it is emphasized that more conclusive and reliable fuel cycle back-end solutions need to be proposed and the links between the various disciplines involved in a successful P&T scenario, from fuel fabrication and irradiation in the reactor through to reprocessing and waste management, have to be considerably reinforced." @default.
- W2338122419 created "2016-06-24" @default.
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- W2338122419 date "2015-01-01" @default.
- W2338122419 modified "2023-10-10" @default.
- W2338122419 title "Key challenges in advanced reprocessing of spent nuclear fuels" @default.
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- W2338122419 doi "https://doi.org/10.1016/b978-1-78242-212-9.00003-4" @default.
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