核材料运输事故中弱贯穿辐射剂量的估算与评价
发布时间：2018-07-29 16:41
【摘要】：UO2芯块的辐射特性以α辐射为主,装载燃料芯块或燃料组件的货包其外部γ辐射水平一般在μSv水平。通常认为即使在芯块裸露状态下对事故处理人员带来的有效剂量也是较低的。但对铀同位素及子体在衰变过程中发射的β射线和单能电子所产生的弱贯穿辐射却一直未引起足够重视。本文采用不同蒙卡计算程序估算了直接接触和佩戴手套接触芯块所受的剂量,并结合某芯块运输实例进行了事故工况的弱贯穿辐射影响评价,亦可作为开展相关辐射防护优化之借鉴。
[Abstract]:The radiation characteristics of UO2 pellets are mainly 伪 radiation. The external 纬 radiation level of packages loaded with fuel pellets or fuel assemblies is generally at 渭 Sv level. It is generally considered that the effective dose to the accident handler is low even when the pellet is exposed. However, the weak penetrating radiation produced by the 尾-ray and single energy electrons emitted by uranium isotopes and their daughters during decay has not been paid enough attention to. In this paper, the dose of direct contact and glove contact pellets is estimated by using different Monka calculation programs, and the impact assessment of weak penetrating radiation under accident condition is carried out in combination with an example of pellet transportation. It can also be used as a reference for optimization of radiation protection.
【作者单位】： 中国辐射防护研究院;上海应用物理研究所;
【分类号】：TL73
[Abstract]:The radiation characteristics of UO2 pellets are mainly 伪 radiation. The external 纬 radiation level of packages loaded with fuel pellets or fuel assemblies is generally at 渭 Sv level. It is generally considered that the effective dose to the accident handler is low even when the pellet is exposed. However, the weak penetrating radiation produced by the 尾-ray and single energy electrons emitted by uranium isotopes and their daughters during decay has not been paid enough attention to. In this paper, the dose of direct contact and glove contact pellets is estimated by using different Monka calculation programs, and the impact assessment of weak penetrating radiation under accident condition is carried out in combination with an example of pellet transportation. It can also be used as a reference for optimization of radiation protection.
【作者单位】： 中国辐射防护研究院;上海应用物理研究所;
【分类号】：TL73
【共引文献】
相关期刊论文 前10条
1 闫永宏;魏来;温贤伦;吴玉迟;赵宗清;张博;朱斌;洪伟;曹磊峰;姚泽恩;谷渝秋;;Calibration and Monte Carlo simulation of a single-photon counting charge-coupled device for single-shot X-ray spectrum measurements[J];Chinese Optics Letters;2013年11期
2 刘星;曹学香;李公平;魏龙;，
本文编号：2153324
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