The dynamic rod worth measurement method, which is used widely for PWR with square geometry lattices, is applied on WWER type reactor with hexagonal geometry lattices. RTNP code is developed to calculate the static spatial factors (SSF) and the dynamic spatial factors (DSF) through simulating the 3D space-time neutron dynamics and the response of excore detector during the measurement process. The improved quasi-static method is used for temporal discretization. The time-dependent shape equation is then transferred to a fixed source problem through backward Euler formula. And Multi-group Monte Carlo method is used to solve this fixed source problem. Four tests on Tianwan nuclear power plant (NPP) units 1&2 have been done since 2015. The measured results agree well with the predicted values. It takes about half hour per bank and 5 hours to measure all banks worth. The conventional boron dilution was used for rod worth measurement of Tianwan NPP units 1&2. It took at least 2 hours per bank and produced lots of boron wastes. The boron dilution has been replaced with this method for Tianwan NPP units 1&2.
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2018 26th International Conference on Nuclear Engineering
July 22–26, 2018
London, England
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5145-6
PROCEEDINGS PAPER
Application of the Dynamic Rod Worth Measurement Method on WWER
Wenbo Zhao,
Wenbo Zhao
Nuclear Power Institute of China, Chengdu, China
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Zhumin Jiang,
Zhumin Jiang
Nuclear Power Institute of China, Chengdu, China
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Liangzi Wang,
Liangzi Wang
Nuclear Power Institute of China, Chengdu, China
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Chenlin Wang,
Chenlin Wang
Nuclear Power Institute of China, Chengdu, China
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Yingrui Yu,
Yingrui Yu
Nuclear Power Institute of China, Chengdu, China
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Zhaohu Gong,
Zhaohu Gong
Nuclear Power Institute of China, Chengdu, China
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Minxiao Zhong,
Minxiao Zhong
Nuclear Power Institute of China, Chengdu, China
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Tongxian Liu,
Tongxian Liu
Nuclear Power Institute of China, Chengdu, China
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Hongzhi Xiang
Hongzhi Xiang
Nuclear Power Institute of China, Chengdu, China
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Wenbo Zhao
Nuclear Power Institute of China, Chengdu, China
Zhumin Jiang
Nuclear Power Institute of China, Chengdu, China
Liangzi Wang
Nuclear Power Institute of China, Chengdu, China
Chenlin Wang
Nuclear Power Institute of China, Chengdu, China
Yingrui Yu
Nuclear Power Institute of China, Chengdu, China
Zhaohu Gong
Nuclear Power Institute of China, Chengdu, China
Minxiao Zhong
Nuclear Power Institute of China, Chengdu, China
Tongxian Liu
Nuclear Power Institute of China, Chengdu, China
Hongzhi Xiang
Nuclear Power Institute of China, Chengdu, China
Paper No:
ICONE26-81055, V003T02A003; 4 pages
Published Online:
October 24, 2018
Citation
Zhao, W, Jiang, Z, Wang, L, Wang, C, Yu, Y, Gong, Z, Zhong, M, Liu, T, & Xiang, H. "Application of the Dynamic Rod Worth Measurement Method on WWER." Proceedings of the 2018 26th International Conference on Nuclear Engineering. Volume 3: Nuclear Fuel and Material, Reactor Physics, and Transport Theory. London, England. July 22–26, 2018. V003T02A003. ASME. https://doi.org/10.1115/ICONE26-81055
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