ASSESSMENT OF THE REACTIVITY BIAS AND BIAS UNCERTAINTY DUE TO WWER-440 FUEL DEPLETION UNCERTAINTIES

N. Baghdasaryan, S. Bznuni, A.M. Amirjanyan
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Abstract

In this paper, bias and bias uncertainty in the neutron multiplication factor due to biases and bias uncertainties in the calculated nuclide concentrations in the spent nuclear fuel of WWER-440 type was assessed. To determine isotopic biases and bias uncertainties in the calculated nuclide concentrations, they were compared to the results of the measurements of isotopic compositions from destructive radiochemical assay of WWER-440 spent fuel carried out in the RIAR. In calculations Monte Carlo uncertainty sampling method was used.
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由wwer-440燃料耗尽不确定性引起的反应性偏差和偏差不确定性的评估
本文对WWER-440型乏核燃料中核素浓度计算中存在的偏差和不确定性对中子增殖因子的偏差和不确定性进行了评价。为了确定计算核素浓度中的同位素偏差和偏差不确定度,将它们与RIAR对WWER-440乏燃料进行破坏性放射化学测定的同位素组成测量结果进行了比较。在计算中采用蒙特卡罗不确定采样法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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