Model Development of UO2-Zr Dispersion Plate-Type Fuel Behavior at Early Phase of Severe Accident and Molten Fuel Meat Relocation
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摘要: 基于UO2-Zr弥散燃料板的结构与材料特性,利用已有的扩散、Nb-Zr反应以及UO2-Zr等材料学相关文献研究了UO2-Zr弥散燃料板严重事故过程中的氧化、固相反应以及熔融物迁移等特殊过程的机理模型,能为含UO2-Zr弥散燃料板堆芯的严重事故行为特性研究与安全分析提供参考。
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关键词:
- UO2-Zr弥散燃料板 /
- 严重事故 /
- 早期行为 /
- 熔融芯体迁移
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. -
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