| Kilopower空间堆掉落事故临界安全问题研究 |
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| 引用本文： | 安伟健,郭键,葛攀和,高剑.Kilopower空间堆掉落事故临界安全问题研究[J].原子能科学技术,2021,55(3):447-453. |
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| 作者姓名： | 安伟健 郭键 葛攀和 高剑 |
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| 作者单位： | 中国原子能科学研究院 反应堆工程技术研究部，北京102413 |
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| 摘 要： | 美国Kilopower空间堆在掉落事故下的keff不满足我国现行空间堆掉落临界安全要求。该反应堆在掉落过程中，若反射层外围的B4C脱落，则存在瞬发超临界的严重安全隐患。针对此问题，本文对反应堆方案进行调整，提出3种解决方案，各方案均可满足掉落临界安全要求。此外，为研究各方案的优劣，从尺寸、质量、物理和热工运行特性等方面对各方案进行综合比较，提出了最优建议方案。
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| 关 键 词： | 空间堆 Kilopower 掉落事故 临界安全 |
Study of Criticality Safety Issue of Kilopower Space Reactor during Launch Failure Accident |
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| AN Weijian,GUO Jian,GE Panhe,GAO Jian.Study of Criticality Safety Issue of Kilopower Space Reactor during Launch Failure Accident[J].Atomic Energy Science and Technology,2021,55(3):447-453. |
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| Authors: | AN Weijian GUO Jian GE Panhe GAO Jian |
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| Affiliation: | Division of Reactor Engineering Technology Research, China Institute of Atomic Energy, Beijing 102413, China |
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| Abstract: | Thekeff of the US Kilopower space reactor during launch failure accident cannot meet the criticality safety requirement of our country space reactor. During the launch failure accident, the reactor may run into a disastrous situation of prompt super criticality if the B4C outside the radial reflector is missing. Three different schemes were proposed in order to solve the problem in this paper. All of these schemes can meet the criticality safety requirement. Besides, the comprehensive comparison of these schemes related to the volume, mass, and the physical and thermal-hydraulics performance was carried out, and a best scheme was chosen and proposed. |
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| Keywords: | space reactor Kilopower launch failure accident criticality safety |
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