Analysis of the impact of spent fuel assembly hoisting drop simulation accident

Qidong Chi; Dianchao Xiao; Xiaoqi Wang; Hehui Wang

doi:10.1117/12.2679350

18 July 2023 Analysis of the impact of spent fuel assembly hoisting drop simulation accident

Qidong Chi, Dianchao Xiao, Xiaoqi Wang, Hehui Wang

Proceedings Volume 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023); 127222Z (2023) https://doi.org/10.1117/12.2679350
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 2023, Hangzhou, China

Abstract

LS-DYNA was used to simulate and analyse the safety of spent fuel assembly dropping during hoisting. Most of the previous studies focus on the stress and strain level of storage rack, but lack of analysis of the assembly. In this paper, a near-ground model with 1/4 of the assembly including all the features is established based on considering the computational efficiency and accuracy. Then, based on bilinear elastic-plastic material constitutive and explicit dynamic algorithm, the deep drop condition of the assembly was analysed. It was found that the bottom of the guide tube and the edge of the storage cavity were the most dangerous. The structural integrity of the assembly and storage rack were evaluated by strain and deformation failure method, and the results showed that they met the safety requirements. The simulation method and conclusion of this paper can provide reference value for the safe hoisting of spent fuel assembly and storage rack.

Citation Download Citation

Qidong Chi, Dianchao Xiao, Xiaoqi Wang, and Hehui Wang "Analysis of the impact of spent fuel assembly hoisting drop simulation accident", Proc. SPIE 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 127222Z (18 July 2023); https://doi.org/10.1117/12.2679350

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KEYWORDS

Nozzles

Plastics

Failure analysis

Deformation

Analytical research

Safety

Materials properties

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