Experiment Research on the Mechanism of Fuel Migration Behavior under Severe Accident of Lead-based Reactor

Cai Qinghang; Chen Ronghua; Xiao Xinkun; Fu Hao; Tian Wenxi; Qiu Suizheng; Su Guanghui

doi:10.13832/j.jnpe.2023.03.0090

Volume 44 Issue 3

Jun. 2023

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Article Navigation > Nuclear Power Engineering > 2023 > 44(3): 90-95

Cai Qinghang, Chen Ronghua, Xiao Xinkun, Fu Hao, Tian Wenxi, Qiu Suizheng, Su Guanghui. Experiment Research on the Mechanism of Fuel Migration Behavior under Severe Accident of Lead-based Reactor[J]. Nuclear Power Engineering, 2023, 44(3): 90-95. doi: 10.13832/j.jnpe.2023.03.0090

Citation:

Cai Qinghang, Chen Ronghua, Xiao Xinkun, Fu Hao, Tian Wenxi, Qiu Suizheng, Su Guanghui. Experiment Research on the Mechanism of Fuel Migration Behavior under Severe Accident of Lead-based Reactor[J]. Nuclear Power Engineering, 2023, 44(3): 90-95. doi: 10.13832/j.jnpe.2023.03.0090

Citation:

Cai Qinghang, Chen Ronghua, Xiao Xinkun, Fu Hao, Tian Wenxi, Qiu Suizheng, Su Guanghui. Experiment Research on the Mechanism of Fuel Migration Behavior under Severe Accident of Lead-based Reactor[J]. Nuclear Power Engineering, 2023, 44(3): 90-95. doi: 10.13832/j.jnpe.2023.03.0090

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Experiment Research on the Mechanism of Fuel Migration Behavior under Severe Accident of Lead-based Reactor

doi: 10.13832/j.jnpe.2023.03.0090

School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an, 710049, China

Received Date: 2022-07-13
Rev Recd Date: 2022-08-30
Publish Date: 2023-06-15

Abstract

Abstract

In the severe accident of lead-based reactor, the fuel particles may lead to core blockage during the migration process in the reactor, and there is a risk of re-criticality. In this study, in order to obtain the flow and migration characteristics of metal particles entrained in liquid lead-bismuth eutectic (LBE), the visualization experimental section of quartz glass was designed, and the visual experimental device called Eirene for the flow and solidification behavior of LBE entrained particles was built. And the flow solidification experiment of LBE in a circular channel and that of LBE entrained stainless steel particles were carried out. The image data of flow and solidification characteristic of LBE, the temperature data of inlet, outlet and tube wall were obtained. The results show that the existence of metal particles seriously hinder the flow of LBE in the tube. It is easy to form solidification blockage in the dense area of the particle bed. A large number of particles are anchored in the middle of the experimental section and gradually form blockage from the outside to the inside. The experimental results can provide support for the verification of the lead-based reactor severe accident analysis models.
- Lead-based reactor,
- Lead-bismuth eutectic(LBE),
- Flow and solidification,
- Particle entrainment

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References(17)

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