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IAEA-TECDOC--693: Use of fast reactors for actinide transmutation

Use of fast reactors for actinide transmutation. Proceedings of a specialists meeting, Obninsk, Russian Federation, 22-24 September 1992. Mar 1993.

International Atomic Energy Agency, Vienna (Austria), IAEA-TECDOC--693

Abstract

The management of radioactive waste is one of the key issues in today's discussions on nuclear energy, especially the long term disposal of high level radioactive wastes. The recycling of plutonium in liquid metal fast breeder reactors (LMFBRs) would allow 'burning' of the associated extremely long life transuranic waste, particularly actinides, thus reducing the required isolation time for high level waste from tens of thousands of years to hundreds of years for fission products only. The International Working Group on Fast Reactors (IWGFR) decided to include the topic of actinide transmutation in liquid metal fast breeder reactors in its programme. The IAEA organized the Specialists Meeting on Use of Fast Breeder Reactors for Actinide Transmutation in Obninsk, Russian Federation, from 22 to 24 September 1992. The specialists agree that future progress in solving transmutation problems could be achieved by improvements in: Radiochemical partitioning and extraction of the actinides from the spent fuel (at least 98% for Np and Cm and 99.9% for Pu and Am isotopes). Technological research and development on the design, fabrication and irradiation of the minor actinides (MAs) containing fuels. Nuclear constants measurement and evaluation (selective cross-sections, fission fragments yields, delayed neutron parameters) especially for MA burners. Demonstration of the feasibility of the safe and economic MA burner cores. Knowledge of the impact of maximum tolerable amount of rare earths in americium containing fuels.

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