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|Title:||Key Challenges in Advanced Reprocessing of Spent Nuclear Fuels|
|Authors:||GLATZ Jean-Paul; SOUCEK Pavel; MALMBECK Rikard|
|ISBN:||ISBN 978-1-78242-212-9 (print)|
ISBN 978-1-78242-217-4 (online)
|Type:||Articles in periodicals and books|
|Abstract:||To develop a sustainable 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 Pu, also the minor actinides (MA's), mainly Np, Am and Cm have to be recycled. Many issues and options are being discussed and studied at present and in this chapter the open issues in view of selecting the optimal route are discussed. The choice is between individual treatment of the relevant elements and a grouped treatment of all actinides together, between a homogeneous mode where all actinides are co-processed and a heterogeneous mode where minor actinides are separately treated; regarding separation the two main options are aqueous and dry reprocessing, which should not be seen as competitors but as solutions to be implemented depending on the boundary conditions governing the deployment of a new reactor system. Separation mechanisms involved in the various process options should be well understood and necessary complete basic data sets should be provided to make best use of simulation and modelling tools to develop efficient and reliable separation schemes. Although some scale-up experiments were already 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. Last not least 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, first of all fuel fabrication, irradiation and reprocessing, have to be considerably re-inforced.|
|JRC Directorate:||Nuclear Safety and Security|
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