Study on Nuclide Diffusion in Closed Environment of Marine Reactor with Large Break Loss of Coolant Accident

Zhao Fang; Zou Shuliang; Xu Shoulong; Xu Tao

doi:10.13832/j.jnpe.2022.02.0194

Volume 43 Issue 2

Apr. 2022

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Zhao Fang, Zou Shuliang, Xu Shoulong, Xu Tao. Study on Nuclide Diffusion in Closed Environment of Marine Reactor with Large Break Loss of Coolant Accident[J]. Nuclear Power Engineering, 2022, 43(2): 194-198. doi: 10.13832/j.jnpe.2022.02.0194

Citation:

Zhao Fang, Zou Shuliang, Xu Shoulong, Xu Tao. Study on Nuclide Diffusion in Closed Environment of Marine Reactor with Large Break Loss of Coolant Accident[J]. Nuclear Power Engineering, 2022, 43(2): 194-198. doi: 10.13832/j.jnpe.2022.02.0194

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Study on Nuclide Diffusion in Closed Environment of Marine Reactor with Large Break Loss of Coolant Accident

doi: 10.13832/j.jnpe.2022.02.0194

Zhao Fang^{1, 2
,},
Zou Shuliang^{2
,
,},
Xu Shoulong^{1, 2},
Xu Tao³

1.
School of Resource Environment and Safety Engineering, University of South China, Hengyang, Hunan, 421001, China
2.
Hunan Provincial Key Laboratory of Emergency Safety Technology and Equipment for Nuclear Facilities, Hengyang, Hunan, 421001, China
3.
Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2021-02-01
Rev Recd Date: 2021-08-26
Publish Date: 2022-04-02

Abstract

Abstract

Based on the research method of severe accident analysis program MELCOR coupled computational fluid dynamics software CFD-FLUENT, MELCOR is used to analyze the loss of coolant accident of marine reactor. The results are used as the initial conditions of CFD-FLUENT simulation experiment to study the diffusion of radionuclides in the reactor compartment with large break loss of coolant accident of marine reactor. The results show that when the leakage time is 45 min, the radionuclides diffuse to the inlet and outlet of the coolant, but at 14 min, the radionuclides begin to spread to the containment, at 51 min, the radionuclides begin to spread from the break of the containment to the containment, and at 87 min, the radionuclides begin to spread to the adjacent compartment. The calculation results of this study can provide theoretical support and data support for emergency decision-making of nuclear accidents.
- Marine reactor,
- LBLOCA,
- Nuclide diffusion,
- MELCOR coupling CFD-FLUENT

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References(10)

References

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