Calculation and Analysis of Rod Dropping Process of Improved Control Rod Assembly for Supercritical Pressurized Water Reactor

Zheng Lele; Yue Ti; Zhu Fawen; Qin Mian; Li Xiang; Liu Menglong; Huang Shan

doi:10.13832/j.jnpe.2022.04.0113

Volume 43 Issue 4

Aug. 2022

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Article Navigation > Nuclear Power Engineering > 2022 > 43(4): 113-117

Zheng Lele, Yue Ti, Zhu Fawen, Qin Mian, Li Xiang, Liu Menglong, Huang Shan. Calculation and Analysis of Rod Dropping Process of Improved Control Rod Assembly for Supercritical Pressurized Water Reactor[J]. Nuclear Power Engineering, 2022, 43(4): 113-117. doi: 10.13832/j.jnpe.2022.04.0113

Citation:

Zheng Lele, Yue Ti, Zhu Fawen, Qin Mian, Li Xiang, Liu Menglong, Huang Shan. Calculation and Analysis of Rod Dropping Process of Improved Control Rod Assembly for Supercritical Pressurized Water Reactor[J]. Nuclear Power Engineering, 2022, 43(4): 113-117. doi: 10.13832/j.jnpe.2022.04.0113

Citation:

Zheng Lele, Yue Ti, Zhu Fawen, Qin Mian, Li Xiang, Liu Menglong, Huang Shan. Calculation and Analysis of Rod Dropping Process of Improved Control Rod Assembly for Supercritical Pressurized Water Reactor[J]. Nuclear Power Engineering, 2022, 43(4): 113-117. doi: 10.13832/j.jnpe.2022.04.0113

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Calculation and Analysis of Rod Dropping Process of Improved Control Rod Assembly for Supercritical Pressurized Water Reactor

doi: 10.13832/j.jnpe.2022.04.0113

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2021-07-19
Rev Recd Date: 2021-09-17
Publish Date: 2022-08-04

Abstract

Abstract

In order to verify whether the improved control rod assembly of supercritical pressurized water reactor (SCWR) can achieve the expected hydraulic buffering function, the rod dropping process is analyzed by using Fluent based on 6 degree of freedom model, which is an option of the layering dynamic mesh method. The control rod assembly dropping time and rod dropping final velocity are analyzed. The results show that compared with the design before the improvement, the dropping time of the improved control rod assembly is increased, but it can still meet the safety requirements; Compared with that before the improvement, the rod dropping final velocity is significantly reduced, and the impact force of rod dropping is thus reduced, so as to ensure the structural integrity of control rod assembly and fuel assembly. The design of the improved control rod assembly can achieve the expected hydraulic buffering function and can be used in the core design of supercritical pressurized water reactor.
- Supercritical pressurized water reactor,
- Improved control rod assembly,
- Rod dropping time,
- Rod dropping impact force,
- Dynamic mesh

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References

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