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      Highly enriched alternatives of VVER-440 fuel assembly Translated title: Optimierung eines hoch angereicherten WWER-440 Brennelements

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      1 , 3, , 5 , , 4, , 5 , 1, , 2
      Kerntechnik
      Carl Hanser Verlag

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          Abstract

          Evolution of VVER-440 fuel assembly is characterised by gradual increase of discharged fuel burn-up and prolongation of fuel cycle. Mentioned effects can be reached effectively by fuel enrichment raise and by parasitic absorption reduction. Both methods were used during VVER-440 fuel assembly optimisation, described at this paper. Enrichment interval was enlarged up to 5.95 % 235U, parasitic absorption was limited by carcass frame of the assembly. Basic characteristics of the best assembly proposals are presented and effects on equilibrium fuel cycle of VVER-440 reactor are characterised.

          Kurzfassung

          Die Entwicklung von WWER-440 Brennelementen ist gekennzeichnet durch die stufenweise Steigerung des Brennstoffabbrands und die Verlängerung des Brennstoffzyklus. Dies wird durch höhere Anreicherungen und durch Reduzierung unerwünschter Absorptionseffekte erzielt. In diesem Beitrag wird die Anwendung dieser Methoden zur Optimierung eines hoch angereicherten WWER-440 Brennelements beschrieben. Dabei wurde eine Anreicherung auf 5,95 % 235U erzielt und die unerwünschte Absorption wurde durch ein spezielles Design des Brennelementkastens limitiert. Die Eigenschaften dieses optimierten Brennelements und sein Einfluss auf das Zyklusgleichgewicht des Brennstoffs wird beschrieben.

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          Most cited references1

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          VVER-440 with inert matrix fuel – viable direction to sustainability

          Reutilisation of fissile nuclides after reprocessing in light water reactor VVER-440 with inert matrix fuel (IMF) is analysed. Development of transmutation combined fuel assembly, containing two pin types – with metal molybdenum + PuO 2 mixture and with classical UO 2 – is described. Static characteristics of five-year VVER-440 fuel cycle with IMF are given. Results of control rod ejection accident analysis are presented. Necessary improvements of transmutation combined fuel assembly with IMF for the reactor VVER-440 are mentioned.
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            Author and article information

            Journal
            kt
            Kerntechnik
            Carl Hanser Verlag
            0932-3902
            2195-8580
            28 August 2014
            : 79
            : 4
            : 274-278
            Affiliations
            1 Slovak University of Technology, Faculty of Electrical Engineering and Information Technology, Department of Nuclear Physics and Technology, Ilkovičova 3, Bratislava, Slovakia
            2 E-mail: vladimir.necas@ 123456stuba.sk
            3 E-mail: petr.darilek@ 123456vuje.sk
            4 E-mail: radoslav.zajac@ 123456vuje.sk
            5 VUJE, Inc., Okružná 5, 918 64 Trnava, Slovakia
            Article
            KT110456
            10.3139/124.110456
            2c4553a8-14b3-430f-99ff-a1cb0b423432
            © 2014, Carl Hanser Verlag, München
            History
            : 31 January 2014
            Page count
            References: 6, Pages: 5
            Categories
            Technical Contributions/Fachbeiträge

            Materials technology,Materials for energy,Nuclear physics
            Materials technology, Materials for energy, Nuclear physics

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