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PIHESENT STAT5 OF SODIUM VOID REACTIVITY PREDICTIONS IN CONVENTIOXAL AND TJOMCONVE3!TIOXAL FAST REACTOR COIiE DESIGITS

By H. Kiisters and Kernforschunzszentrum Karlsruhe

Abstract

e In this paper a review is given on the present status of the prediction of sodium void reactivity effects in conventional and nonconventional fast reactor core designs. First problems arising in the assessment of fast reactor safety are outlined and are discussed in relation to reactor physics aspects. Target accuracies for the sodium void effect are estimated. Nuclear data and calculational uncertainties are discussed, and the present accuracy achieved in various laboratories of the world is summarized. Some cases, for which the calculated void effects were rather far off the respective experimental results, were re-examined, resulting in significant improvements. 1

Year: 2011
OAI identifier: oai:CiteSeerX.psu:10.1.1.180.7656
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