Nuclear Physics and Atomic Energy 14 (2013) 142

Ядерна фізика та енергетика
Nuclear Physics and Atomic Energy

ISSN: 1818-331X (Print), 2074-0565 (Online)
Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine
Languages: Ukrainian, English
Periodicity: 4 times per year

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Nucl. Phys. At. Energy 2013, volume 14, issue 2, pages 142-149.
Section: Atomic Energy.
Received: 05.03.2013; Published online: 30.06.2013.

Full text (ua)
https://doi.org/10.15407/jnpae2013.02.142

Mathematical dependence for the ¹³⁷Cs concentration in spent nuclear fuel and its using for experimental data processing

V. V Galchenko¹, V. L. Diemokhin²

¹Joint-Stock Company Kyiv Research and Design Institute "Energoproject"
²Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine

Abstract: The ¹³⁷Cs behavior during burn up for VVER and RBMK fuel were analyzed. Mathematical dependence for the ¹³⁷Cs concentration from fuel burn up in the form of c₁₃₇[kg/t(U)]= 3.9*10^-5*e^{-λ₁₃₇τ} burn[MW*day/t(U)] is obtained. The formula's calculation results on ¹³⁷Cs concentration were compared with ORIGEN and STURBUCS of SCALE-5 computer codes system calculations with some RBMK-1000 fuel experimental data. Using offered dependence, the RBMK experimental samples cooling times were founded and isotopic compositions calculations were made with proper cooling time. Difference on some isotopes between calculation and experimental data were reduced.

Keywords: fuel burnup, ¹³⁷Cs, mathematical dependence, VVER, RBMK, fuel assembly, isotopes compositions, spent nuclear fuel.

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