The special safety facilities and important equipment, etc. of the nuclear power plant will be damaged due to the whipping nuclear high-energy piping after the rupture, and more serious further damage will be caused. In this paper, the process and method of protection analysis of the nuclear high-energy piping rupture have been given from four aspects. The four aspects are location of high-energy piping break, the jet thrust, whipping behavior analysis, and protection analysis of whipping. On the basis of the traditional energy balance method, the method is improved by considering the energy absorbed by the plastic hinge of the piping and the change in the direction of the jet thrust. And then, the comparisons among the traditional energy balance method, the improved energy balance method, and the 3-D finite element dynamic method have been carried out. The deformation of the whip limiter analyzed by the traditional energy balance method is 20.31% larger than which analyzed by the improved energy balance method, and the deformation of the whip limiter analyzed by the 3-D finite element dynamic method is 30.59% smaller than which analyzed by the improved energy balance method. For the first time, a 3-D finite element model according to the true arrangement of the pipe and the whip limiter model are built to simulate the process of whipping not in the plane, considering the energy dissipation of the whip limiter. For the pipe whipping not in the plane and protecting against the pipe rupture by whip limiter, there is no good way to carry out the protection analysis of the piping rupture in the past. Now, the problem can be solved by the 3-D finite element dynamic method.
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2017 25th International Conference on Nuclear Engineering
July 2–6, 2017
Shanghai, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5780-9
PROCEEDINGS PAPER
Technology of Protection Against the Dynamic Effect of Nuclear Pipe Rupture
Feng He,
Feng He
Nuclear Power Institute of China, Chengdu, China
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Feng Yuan,
Feng Yuan
Nuclear Power Institute of China, Chengdu, China
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Honglei Ai,
Honglei Ai
Nuclear Power Institute of China, Chengdu, China
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Xinjun Wang,
Xinjun Wang
Nuclear Power Institute of China, Chengdu, China
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Xifeng Lu,
Xifeng Lu
Nuclear Power Institute of China, Chengdu, China
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Yongbo Lv
Yongbo Lv
Nuclear Power Institute of China, Chengdu, China
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Feng He
Nuclear Power Institute of China, Chengdu, China
Feng Yuan
Nuclear Power Institute of China, Chengdu, China
Honglei Ai
Nuclear Power Institute of China, Chengdu, China
Xinjun Wang
Nuclear Power Institute of China, Chengdu, China
Xifeng Lu
Nuclear Power Institute of China, Chengdu, China
Yongbo Lv
Nuclear Power Institute of China, Chengdu, China
Paper No:
ICONE25-66381, V002T03A042; 8 pages
Published Online:
October 17, 2017
Citation
He, F, Yuan, F, Ai, H, Wang, X, Lu, X, & Lv, Y. "Technology of Protection Against the Dynamic Effect of Nuclear Pipe Rupture." Proceedings of the 2017 25th International Conference on Nuclear Engineering. Volume 2: Plant Systems, Structures, Components and Materials. Shanghai, China. July 2–6, 2017. V002T03A042. ASME. https://doi.org/10.1115/ICONE25-66381
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