Numerous studies have attempted to solve the problems constraining the sustainable utilization of nuclear power, for example,\r\nthe already accumulated HLWs, the worsening environment due to greenhouse emissions, the questionable reliability of natural\r\nuranium resources, and the argument over nuclear safety, which are certainly top issues to be addressed. A well-organized nuclear\r\nfuel cycle system is the basis for nuclear power sustainability. Therefore, which type of reactor to be employed and whether or not\r\nto adopt a reprocessing technique for spent fuel are two key issues to be addressed. A Sodium Fast Reactor (SFR), a Generation IV\r\nreactor, has gained considerable attention worldwide. SFR recycling coupled to pyroprocessing, a so-called Pyro-SFR Recycling,\r\nshows promising advantages, and therefore, this paper focuses on exploring a strategy of how to realize it, which can offer\r\ninformative procedures for a better use of nuclear power. A dynamic model has been developed to quantitatively analyze a countryspecific\r\ncase employing two scenarios, a once-through and Pyro-SFR, for a comprehensive comparison, especially focusing on the\r\nuranium utilization, the HLWreduction, and the electricity generation cost.
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