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http://dx.doi.org/10.1016/j.net.2022.04.009

Spent fuel characterization analysis using various nuclear data libraries  

Calic, Dusan (Jozef Stefan Institute (JSI))
Kromar, Marjan (Jozef Stefan Institute (JSI))
Publication Information
Nuclear Engineering and Technology / v.54, no.9, 2022 , pp. 3260-3271 More about this Journal
Abstract
Experience shows that the solution to waste management in any national programme is lengthy and burdened with uncertainties. There are several uncertainties that contribute to the costs associated with spent fuel management. In this work, we have analysed the impact of the current nuclear data on the isotopic composition of the spent fuel and consequently their influence on the main spent fuel observables such as decay heat, activity, neutron multiplication factor, and neutron and photon source terms. Nuclear libraries based on the most general nuclear data ENDF/B-VII.0, ENDF/B-VII.1, ENDF/B-VIII.0 and JEFF-3.3 are considered. A typical NPP Krško fuel assembly is analysed using the Monte Carlo code Serpent 2. The analysis considers burnup of up to 60 GWd/tU and cooling times of up to 100 years. The comparison of results showed significant differences, which should be taken into account when selecting the library and evaluating the uncertainty in determining the characteristics of the spent fuel.
Keywords
Spent nuclear fuel; Decay heat; Serpent; Monte Carlo; Nuclide uncertainties;
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