| 小型动力堆码头中破口失水事故大气扩散研究 |
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| 引用本文： | 王伟,张帆,陈力生,晏峰.小型动力堆码头中破口失水事故大气扩散研究[J].原子能科学技术,2014,48(11):2012-2016. |
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| 作者姓名： | 王伟 张帆 陈力生 晏峰 |
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| 作者单位： | 1.海军工程大学 核能科学与工程系，湖北 武汉430033；2.海军陆战学院 陆战系，广东 广州510430 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用高斯分段烟羽模型估算了某小型动力堆在码头内发生破口尺寸为29.4%当量直径的设计基准事故时，放射性核素在码头20 km区域范围内的大气扩散规律。源项采用严重事故计算程序MELCOR仿真获得，并将计算结果输入到大气扩散分析软件MACCS进行分析计算。计算结果表明：中破口失水事故会造成码头区域的放射性污染，风速越小、气象条件越稳定，放射性的影响范围越大。
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| 关 键 词： | 高斯分段烟羽模型 大气扩散 MELCOR MACCS |
Atmospheric Dispersion Research of Mid-break LOCA for Small Reactor of Nuclear-powered Device in Dock |
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| WANG Wei,ZHANG Fan,CHEN Li-sheng,YAN Feng.Atmospheric Dispersion Research of Mid-break LOCA for Small Reactor of Nuclear-powered Device in Dock[J].Atomic Energy Science and Technology,2014,48(11):2012-2016. |
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| Authors: | WANG Wei ZHANG Fan CHEN Li-sheng YAN Feng |
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| Affiliation: | 1.Department of Nuclear Science and Engineering, Naval University of Engineering, Wuhan 430033, China;2.Department of Marine, Naval Marine College, Guangzhou 510430, China |
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| Abstract: | Using the model of Gaussion subsection plume, the radioactive nuclide atmospheric dispersion rule in the terrain of 20 km of the coastal was estimated when the design basis accident with 29.4% equivalent diameter break size happened. The source term was captured by the calculation program of severe accident named MELCOR, and the result was used as input in the analysis software of atmospheric dispersion named MACCS. The results show that the mid-break LOCA would lead to the radioactive pollution for the area of dock. The slower the wind blows and the more steady the weather is, the larger the radioactive polluted area is. |
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| Keywords: | model of Gaussion subsection plume atmospheric dispersion M ELCOR M ACCS |
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