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Study on multi-objective optimization method for radiation shield design of nuclear reactors
Yao Wu,Bin Liu,Xiaowei Su,Songqian Tang,Mingfei Yan,Liangming Pan Korean Nuclear Society 2024 Nuclear Engineering and Technology Vol.56 No.2
The optimization design problem of nuclear reactor radiation shield is a typical multi-objective optimization problem with almost 10 sub-objectives and the sub-objectives are always demanded to be under tolerable limits. In this paper, a design method combining multi-objective optimization algorithms with paralleling discrete ordinate transportation code is developed and applied to shield design of the Savannah nuclear reactor. Three approaches are studied for light-weighted and compact design of radiation shield. Comparing with directly optimization with 10 objectives and the single-objective optimization, the approach by setting sub-objectives representing weight and volume as optimization objectives while treating other sub-objectives as constraints has the best performance, which is more suitable to reactor shield design.