Impact of H in H2O thermal scattering data on depletion calculation: k∞, nuclide inventory and decay heat
Reactor Physics and Thermal hydraulic Laboratory, Paul Scherrer Institut,
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Received in final form: 15 November 2021
Accepted: 24 November 2021
Published online: 21 December 2021
The impact of the H in H2O thermal scattering data are calculated for burnup quantities, considering models of a UO2 pincell with DRAGON and SERPENT. The Total Monte Carlo method is applied, where the CAB model parameters are randomly varied to produce sampled (random) LEAPR input files for NJOY. A large number of burnup calculations is then performed, based on the random thermal scattering data. It is found that the impact on k∞ is relatively small (less than 35 pcm), as for nuclide inventory (less than 1% at 50 MWd/kgU) and for decay heat (less than 0.4%). It is also observed that the calculated probability density functions indicate strong non-linear effects.
© D. Rochman et al., Published by EDP Sciences, 2021
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