Reprocessing techniques of LWR spent fuel for reutilization in hybrid systems and IV generation reactors
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Universidade Federal de Minas Gerais
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Since the era of nuclear technology begins, nuclear reactors have been produced spent fuel. This spent fuel contains material that could be recycle and reprocessed by different processes. All these processes aim to reduce the contribution to the final repository
through the re-utilization of the nuclear material. Therefore, some new reprocessing options with non-proliferation characteristics have been proposed and the goal is to compare the different techniques used to maximize the effectiveness of the spent fuel utilization and to reduce the volume and long-term radiotoxicity of high-level waste by irradiation with neutron with high energy such as the ones created in hybrid reactors. In order to compare different recovery methods, the cross sections of fuels are calculated with de MCNP code, the first set consists of thorium-232 spiked with the reprocessed material and the second set in depleted uranium that containing 4.5% of U-235 spiked with the reprocessed material; These sets in turn are compared with the cross section of the 𝑈𝑈𝑂𝑂2 in order to evaluate the efficiency of the reprocessed fuel as nuclear fuel.
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Reatores nucleares, Irradiação, Combustíveis nucleares
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Nuclear technology, Radiotoxicity, Nuclear reactors, Spent fuel
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https://inis.iaea.org/records/z5wsj-hxp77