@inproceedings{50422fab48464ec596dcac33da857ceb,
title = "Analysis of control rod ejection accident in MOX and MOX/UOX cores with time-dependent multigroup pin-by-Pin SP3 methods",
abstract = "Multigroup, pin-by-pin transport methods based on the SP3 approximation have been implemented in the U.S. NRC neutronics code PARCS and applied to analysis of a control rod ejection transient for MOX/UOX and UOX fueled cores. The purpose of this paper is twofold. First, comparisons are made of rod ejection transient results for the MOX/UOX and UOX cores in order to assess the impact of MOX on core transient performance. Results here indicate that the MOX/UOX core shows an earlier and smaller power peak compared to the UOX core. Point kinetics parameters were generated from the spatial kinetics results in order to help explain the observed behavior. The second purpose of this paper is to assess the importance of multigroup transient transport calculations for highly heterogeneous problems. A comparison of the 8-group pin-by-pin SP3 with the conventional two group nodal diffusion methods indicates that the difference of the predicted control rod worth is a large source of the discrepancy between the higher and lower order results.",
author = "Lee, {Chang Ho} and Tomasz Kozlowski and Downar, {Thomas J.}",
note = "Publisher Copyright: {\textcopyright} PHYSOR 2002.All right reserved.; 2002 International Conference on the New Frontiers of Nuclear Technology : Reactor Physics, Safety and High-Performance Computing, PHYSOR 2002 ; Conference date: 07-10-2002 Through 10-10-2002",
year = "2002",
language = "English (US)",
series = "Proceedings of the PHYSOR 2002 - International Conference on the New Frontiers of Nuclear Technology : Reactor Physics, Safety and High-Performance Computing - The ANS 2002 RPD Topical Meeting",
publisher = "American Nuclear Society",
booktitle = "Proceedings of the PHYSOR 2002 - International Conference on the New Frontiers of Nuclear Technology",
}