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Physical and economical aspects of Pu multiple recycling on the basis of REMIX reprocessing technology in thermal reactors

The basic strategy of Russian nuclear energy is propagation of a closed fuel cycle on the basis of fast breeder and thermal reactors, as well as the solution of the spent nuclear fuel accumulation and resource problems. | Physical and economical aspects of Pu multiple recycling on the basis of REMIX reprocessing technology in thermal reactors EPJ Nuclear Sci. Technol. 2 41 2016 Nuclear Sciences P.S. Teplov et al. published by EDP Sciences 2016 amp Technologies DOI 10.1051 epjn 2016034 Available online at http www.epj-n.org REGULAR ARTICLE Physical and economical aspects of Pu multiple recycling on the basis of REMIX reprocessing technology in thermal reactors Pavel S. Teplov Pavel N. Alekseev Evgeniy A. Bobrov and Alexander V. Chibinyaev NRC Kurchatov Institute Moscow Russia Received 30 September 2015 Received in final form 30 March 2016 Accepted 20 September 2016 Abstract. The basic strategy of Russian nuclear energy is propagation of a closed fuel cycle on the basis of fast breeder and thermal reactors as well as the solution of the spent nuclear fuel accumulation and resource problems. The three variants of multiple Pu and U recycling in Russian pressurized water reactor concept reactors on the basis of REgenerated MIXture of U Pu oxides REMIX reprocessing technology are considered in this work. The REMIX fuel is fabricated from an unseparated mixture of uranium and plutonium obtained during spent fuel reprocessing with further makeup by enriched natural U or reactor grade Pu. This makes it possible to recycle several times the total amount of Pu obtained from the spent fuel. The main difference in Pu recycling is the concept of 100 or partial fuel loading of the core. The third variant is heterogeneous composition of enriched uranium and uranium plutonium mixed oxide fuel pins in one fuel assembly. It should be noted that all fuel assemblies with Pu require the involvement of expensive technologies during manufacturing. These three variants of the full core loadings can be balanced on zero Pu accumulation in the cycle. The various physical and economical aspects of Pu and U multiple recycling in selected variants are observed in the given work. 1 Introduction uranium. The main