Analysis of Measured Isotopic Compositions of High-Burnup BWR MOX Fuel
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概要
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Analysis of measured isotopic compositions of four high-burnup BWR MOX fuel samples was performed by using a general-purpose neutronic calculation code SRAC and a continuous-energy Monte Carlo burnup code MVP-BURN. The initial Pu fissile content of the samples was 5.52 wt%, and the burnups ranged from 50 to 80 GWd/t. It is confirmed that a geometrical model including the effect of UO2 assemblies adjacent to the MOX assembly is necessary in the burnup calculations to obtain accurate calculated isotopic compositions. The calculated results of MVP-BURN with JENDL-3.3 taking such effect into account show more accurate results for major actinides (U, Pu, and Am isotopes) and most fission products than those of infinite assembly calculations. The paper also shows the results calculated using SRAC with JENDL-3.3, ENDF/B-VII, and JEFF-3.1.
- 2011-03-01
著者
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ANDO Yoshihira
Japan Nuclear Energy Safety Organization
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SUGOU Yukihiro
IX Knowledge, INC.
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Yamamoto Toru
Japan Aerospace Exploration Agency
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Sugou Yukihiro
Ix Knowledge Inc.
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