Criticality Safety Analysis of Uranium Dioxide Powder Transport Container

JIAO Limin; WANG Zhipeng; ZHANG Peidong; HAO Jiaxin; CHEN Lei; SUN Qian; WANG Changwu; ZHUANG Dajie

doi:10.19554/j.cnki.1001-3563.2025.21.035

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Packaging Engineering ›› 2025, Vol. 46 ›› Issue (21) : 326-331. DOI: 10.19554/j.cnki.1001-3563.2025.21.035

Equipment Protection

Criticality Safety Analysis of Uranium Dioxide Powder Transport Container

JIAO Limin, WANG Zhipeng, ZHANG Peidong, HAO Jiaxin, CHEN Lei, SUN Qian, WANG Changwu, ZHUANG Dajie

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Abstract

Criticality safety is a primary concern in designing transport containers for fissile UO₂ powder. Therefore, it is necessary to analyze the criticality safety of containers under both normal conditions and accident scenarios during transport, ensuring that the design complies with all applicable regulatory and standard requirements for criticality safety. Based on experimental cases from the International Handbook of Criticality Safety similar to the case at hand, the Monte Carlo method was employed to calculate the subcritical limit for this case. Reactivity calculations were then performed for both single and array packages under normal and accident conditions during transport. The maximum k_eff of the single package was 0.303 87 under normal transport and accident conditions, while that of the array package was 0.543 20. The reactivity of the uranium dioxide powder transport container is below the subcritical limit under both normal and accident conditions and its Criticality Safety Index (CSI) is 0, meeting the design requirements.

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radioactive material transport / uranium dioxide powder / transport container / criticality safety

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JIAO Limin, WANG Zhipeng, ZHANG Peidong, HAO Jiaxin, CHEN Lei, SUN Qian, WANG Changwu, ZHUANG Dajie. Criticality Safety Analysis of Uranium Dioxide Powder Transport Container[J]. Packaging Engineering. 2025, 46(21): 326-331 https://doi.org/10.19554/j.cnki.1001-3563.2025.21.035

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