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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.12
- 수록면
- 42 - 56 (15page)
- DOI
- 10.5855/ENERGY.2023.32.4.042
이용수
초록· 키워드
오류제보하기
Equilibrium cycle nuclear design involves optimal design of an initial and reload cycles within safety limits which requires repeated effort, engineering experience and judgment in a limited time.
In this study, a nuclear design process is proposed to achieve an optimized LP (Loading Pattern) for equilibrium cycle of APR1400 with 17×17 FAs loaded with WABA (Wet Annular Burnable Absorber). This design process includes optimizing fuel enrichment, the number of FAs (Fuel Assemblies) in each batch and loading pattern for a given energy requirement. First, an FMNG (Fuel Management Net Graph) curve is used to determine for both core average enrichment and CBC (Critical Boron Concentration) satisfying the energy requirement. Using the results, optimization of fuel batch specification such as numbers of FAs and WABAs is performed using Evolutionary Algorithm. Lastly, optimum loading pattern search is performed using a code called as COSUME (COnsecutive SUrvival MEthod) using SA (Simulated Annealing). COSUME, an automation program for LP search, has been developed in python programming language to facilitate this process and minimize the burden on the user.
To validate the design process, three different cycle lengths (17.5, 19.5, and 23.5 GWD/t) of APR 1400 equilibrium cycle are investigated using different feed fuel numbers (92, 96, and 100 FAs). COSUME searches optimum LPs for initial, reload, and equilibrium cores. In each case, Maximum Fxy values always remained below the design limit of 1.55 and achieved target cycle lengths, 17.5 GWD/t, 19.5 GWD/t and 23.5 GWD/t, respectively.
In this study, a nuclear design process is proposed to achieve an optimized LP (Loading Pattern) for equilibrium cycle of APR1400 with 17×17 FAs loaded with WABA (Wet Annular Burnable Absorber). This design process includes optimizing fuel enrichment, the number of FAs (Fuel Assemblies) in each batch and loading pattern for a given energy requirement. First, an FMNG (Fuel Management Net Graph) curve is used to determine for both core average enrichment and CBC (Critical Boron Concentration) satisfying the energy requirement. Using the results, optimization of fuel batch specification such as numbers of FAs and WABAs is performed using Evolutionary Algorithm. Lastly, optimum loading pattern search is performed using a code called as COSUME (COnsecutive SUrvival MEthod) using SA (Simulated Annealing). COSUME, an automation program for LP search, has been developed in python programming language to facilitate this process and minimize the burden on the user.
To validate the design process, three different cycle lengths (17.5, 19.5, and 23.5 GWD/t) of APR 1400 equilibrium cycle are investigated using different feed fuel numbers (92, 96, and 100 FAs). COSUME searches optimum LPs for initial, reload, and equilibrium cores. In each case, Maximum Fxy values always remained below the design limit of 1.55 and achieved target cycle lengths, 17.5 GWD/t, 19.5 GWD/t and 23.5 GWD/t, respectively.
목차
Abstract
1. Introduction
2. Loading Pattern Optimization for APR1400 with 17 by 17 FAs
3. Results
4. Conclusion and Discussion
5. Acknowledgement
6. References
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