| 高温气冷堆包覆燃料颗粒破损率研究 |
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| 引用本文： | 朱钧国,杨冰,张秉忠,徐世江,黄锦涛.高温气冷堆包覆燃料颗粒破损率研究[J].清华大学学报(自然科学版),1995(6). |
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| 作者姓名： | 朱钧国 杨冰 张秉忠 徐世江 黄锦涛 |
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| 作者单位： | 清华大学核能技术设计研究院 |
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| 摘 要： | 包覆燃料颗粒是高温气冷堆燃料元件的关键组成部分，是阻挡放射性裂变产物释放的主要屏障。包覆燃料颗粒的破损率是一项直接影响高温气冷堆运行安全特性的重要质量监控指标。采用燃烧－硝酸浸取法（在 ８５０ ℃空气中灼烧， ９ｈ； ９０ ℃， ７ｍｏｌ／Ｌ ＨＮＯ３， １０ｈ）对包覆燃料颗粒的破损率进行了测试研究。制定了测试流程，给出包覆燃料颗粒的自由铀含量与浸取时间的关系曲线，确定了最佳的试验温度、硝酸浓度和浸取时间等测试条件，并对６组包覆燃料颗粒破损率测试结果进行了分析讨论。
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| 关 键 词： | 高温气冷堆 包覆燃料颗粒 表面铀污染 破损率 燃烧-硝酸浸取 |
Research on the failure rate of coated fuel particles for HTGR |
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| Zhu Junguo, Yang Bing, Zhang Bingzhong, Xu Shijiang, Huang Jintao Institute of Nuclear Energy Technology,Tsinghua University.Research on the failure rate of coated fuel particles for HTGR[J].Journal of Tsinghua University(Science and Technology),1995(6). |
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| Authors: | Zhu Junguo Yang Bing Zhang Bingzhong Xu Shijiang Huang Jintao Institute of Nuclear Energy Technology Tsinghua University |
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| Abstract: | The coated fuel particle (CP) is the key component of the fuel element of the high temperature gas cooled reactor (HTGR). The radioactive fission products are mainly retained by CP. The quality of CP has direct effect on the safety characterization of HTGR. The failure rate of CP is one of the important items for quality control. The failure fraction of as-fabricated CP was investigated and measured by burn-leaching test. The free uraniumleaching time relation was obtained. The optimum condition of testing temperature, the concentration of nitric acid solution, the leaching time, etc were determined. The failed particle fractions of six samples were measured and evaluated. |
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| Keywords: | high temperature gas cooled reactors (HTGR) coated fuel particles (CP) surface uranium contamination failure rate burn-nitric acid leaching |
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