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Abstract

The partitioning and transmutation of long-lived nuclides is one of the innovative technologies for future nuclear fuel cycles. Research at the Central Research Institute of Electric Power Industry (CRIEPI) is now focussing on the pyrometallurgical separation of long-lived nuclides, especially transuranic (TRU) elements, from high-level liquid waste, scrubbing solvent solutions and undissolved residue coming from Purex-type reprocessing, and on the recycling of minor actinides (MAs) as well as major ones in a metal-fuelled fast breeder reactor (FBR) cycle by mixing them in U-Pu-Zr alloys. The latter research activity focusses on analysing transmutation rates by the simulation code CITATION-TRU, the design study of fuel elements, and the characterisation of MAs containing the U-Pu-Zr alloy. In the first study on metal fuel with MAs, the miscibility of actinides, the allowable content of MAs and rare earth in U-Pu-Zr, and the characterisation of the metal are evaluated. The mixing of some amount of rare earth with the actinide product is unavoidable, as a result of pyrometallurgical separation.

Additional information

Authors: INOUE T, CRIEPI (JP);KURATA M, CRIEPI (JP);KOCH L ET AL., JRC Karlsruhe (DE)
Bibliographic Reference: Paper presented: Winter Meeting of the American Nuclear Society, San Francisco (US), November 10-14, 1991
Availability: Available from (1) as Paper EN 36554 ORA
Record Number: 199210185 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en