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  • Effects of multi-recycling of uranium reprocessed from spent . . .
    The 236 U 235 U ratio of RepU varies from 0 4 to 1 2, depending on the initial 235 U enrichment and fuel burnup 236 U is co-enriched while re-enriching 235 U in RepU Based on the centrifuge enrichment data, the enrichment coefficient of 236 U (α 236), defined as 236 U 235 U ratio after and before
  • Processing of Used Nuclear Fuel - World Nuclear Association
    Used nuclear fuel has long been reprocessed to extract fissile materials for recycling and to reduce the volume of high-level wastes New reprocessing technologies are being developed to be deployed in conjunction with fast neutron reactors which will burn all long-lived actinides
  • U. S. Spent Nuclear Fuel Reprocessing May Be Making a Comeback . . .
    Breeders promised to convert abundant uranium-238 (U-238) into a usable fuel (plutonium-239), produce more usable fuel than they consumed, and use 60% or more of the energy content of the uranium
  • Processing Used Nuclear Fuel – Nuclear Age Peace Foundation
    Reprocessing used fuel to recover uranium (as reprocessed uranium, or RepU) and plutonium (Pu) avoids the wastage of a valuable resource Most of it – about 96% – is uranium, of which less than 1% is the fissile U-235 (often 0 4-0 8%), and up to 1% is plutonium
  • To Recycle or Not to Recycle? An Intergenerational Approach . . .
    The worldwide need for energy is growing The International Energy Agency foresees a 60% increase in energy need in the world between 2004 and 2030 and most of this expansion is expected to be met by fossil fuel Fossil fuels are not an attractive option, however, for reasons concerning the availability of resources and climate change
  • Nuclear Fuel Reprocessing - University of Chicago
    In nature, uranium consists of ~99 284% U-238 and ~ 711% U-235 with trace amounts of other isotopes However, only U-235 will undergo fission in the presence of thermal neutrons – and thus cross-sectional energy yield per unit time in a fission reaction is governed by the ratio of U-235 to U-238 For use in nuclear reactors, uranium ore is
  • Physical and Technical Problems of Reprocessed Uranium . . .
    Issues concerning fuel cycle closure are discussed It is shown that from the standpoint of full utilization of reprocessed nuclear materials the main problems are associated with repeated recycling of uranium, the reason being that limitations are imposed on the content of the isotope 232U in fresh fuel produced from reprocessed materials The losses of the isotope 235U on repeated recycling


















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