Szczegóły publikacji
Opis bibliograficzny
Statistical error propagation in HTR burnup model / G. KĘPISTY, M. OETTINGEN, P. STANISZ, J. CETNAR // Annals of Nuclear Energy ; ISSN 0306-4549. — 2017 — vol. 105, s. 355–360. — Bibliogr. s. 360, Abstr. — Publikacja dostępna online od: 2017-04-03
Autorzy (4)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 105150 |
|---|---|
| Data dodania do BaDAP | 2017-05-23 |
| DOI | 10.1016/j.anucene.2017.03.039 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Annals of Nuclear Energy |
Abstract
In this study we use independent replica calculations in order to assess statistical error propagation in whole-core actinide-burner High Temperature Reactor model. We use the MCB5 code for modeling a single irradiation cycle with reactivity control. We made 100 simulations of representative neutron precision, each having different initial random number generator seed. We analyze the real-to-apparent tally variation for neutron multiplication factor and nuclear reaction rates. While keff uncertainty is well-predicted, local reaction uncertainties have exhibited under-prediction of several times since the very beginning of irradiation. Additionally, we correlate the increasing dominance ratio with the emergence of numerical instability and source convergence problems at a high burnup. Our conclusions indicate that the neutron cycle-to-cycle correlation must be considered by code users dealing with computationally expensive HTR models.
