Model Development of UO<sub>2</sub>-Zr Dispersion Plate-Type Fuel Behavior at Early Phase of Severe Accident and Molten Fuel Meat Relocation

Zhang Zhuohua; Peng Shinian; Yu Junchong

doi:10.13832/j.jnpe.2014.04.0143

Volume 35 Issue 5

Feb. 2025

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Zhang Zhuohua, Peng Shinian, Yu Junchong. Model Development of UO2-Zr Dispersion Plate-Type Fuel Behavior at Early Phase of Severe Accident and Molten Fuel Meat Relocation[J]. Nuclear Power Engineering, 2014, 35(5): 143-147. doi: 10.13832/j.jnpe.2014.04.0143

Citation:

Zhang Zhuohua, Peng Shinian, Yu Junchong. Model Development of UO₂-Zr Dispersion Plate-Type Fuel Behavior at Early Phase of Severe Accident and Molten Fuel Meat Relocation[J]. Nuclear Power Engineering, 2014, 35(5): 143-147. doi: 10.13832/j.jnpe.2014.04.0143

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Model Development of UO₂-Zr Dispersion Plate-Type Fuel Behavior at Early Phase of Severe Accident and Molten Fuel Meat Relocation

doi: 10.13832/j.jnpe.2014.04.0143

1. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute China, Chengdu, 610041, China;
2. Department of Engineering Physics, Tsinghua University, Beijing, 100084, China

Received Date: 2014-03-25
Rev Recd Date: 2014-07-25

Available Online: 2025-02-15

Abstract

Abstract

According to former study on oxygen diffusion, Nb-Zr solid reaction and UO₂-Zr solid reaction, the models of oxidation, solid reaction in fuel meat and relocation of molten fuel meat are developed based on structure and material properties of UO₂-Zr dispersion plate-type fuel. The new models can supply theoretical elements for the safety analysis of the core assembled with dispersion plate-type fuel under severe accident.
- UO₂-Zr dispersion plate-type fuel,
- Severe accident,
- Core behavior at early phase,
- Relocation of molten fuel meat