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Fig. 2.


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Ratio of the irradiation-averaged fission yields predicted by the different burnup determination methods (from the calculated fuel inventories) to the simulation-based irradiation-averaged fission yields for mass series 146 and 148. The comparison provides an integral assessment of the distribution of fissions predicted by the different burnup determination methods. In the first column (“original”), the set of cross-section parameters as proposed in the individual articles [13, 14, 16, 17] is used. The second column illustrates the sensitivity to experimental scatter, which is simulated by means of noise to the nuclide concentrations in the assessment database, assuming a normal distribution (1% standard deviation) around the calculated value. The last column illustrates the performance of the different methods when the case-specific effective cross-section values are used to calculate the irradiation-averaged fission yields.

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