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中国核动力研究设计院 核反应堆系统设计技术重点实验室 成都 610213
朱建平,男,1987年出生,2013年于哈尔滨工业大学获硕士学位,工程师,现从事源项与屏蔽设计工作
吕焕文,E-mail:lvhuanwen@126.com
收稿日期:2015-11-23,
修回日期:2016-01-22,
录用日期:2016-01-22,
纸质出版日期:2016-04-25
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朱建平, 肖锋, 高希龙, 等. 燃料操作区域气载放射性浓度分析[J]. 核技术, 2016,39(4):040605
Jianping ZHU, Feng XIAO, Xilong GAO, et al. Study of airborne radioactivity concentration in fuel handling area[J]. Nuclear techniques, 2016, 39(4): 040605
朱建平, 肖锋, 高希龙, 等. 燃料操作区域气载放射性浓度分析[J]. 核技术, 2016,39(4):040605 DOI: 10.11889/j.0253-3219.2016.hjs.39.040605.
Jianping ZHU, Feng XIAO, Xilong GAO, et al. Study of airborne radioactivity concentration in fuel handling area[J]. Nuclear techniques, 2016, 39(4): 040605 DOI: 10.11889/j.0253-3219.2016.hjs.39.040605.
本文建立了燃料操作区域气载放射性浓度计算模型
对典型核素气载放射性浓度的变化趋势进行了分析。利用该模型研究了核素类型、通风流量等因素对燃料操作区域气载放射性浓度的影响
最后分析了燃料操作区域气载放射性的主要来源。结果表明
不同核素达到气载放射性浓度最大值的时刻不同
应取各核素燃料操作期间气载放射性浓度最大值作为设计值;燃料操作区域排风量与其净空间体积比值
λ
h
与气载放射性浓度成反比
反应堆冷却剂中放射性活度是气载放射性的主要来源
可以通过调节排风量、降低冷却剂放射性活度、降低蒸发量将气载放射性控制在一定水平。
Background:
2
Currently
the computational model used to airborne radi
oactive source terms is too simple to applying to all cases.
Purpose:
2
The aim is to build a computational model for airborne radioactive concentration in fuel handling area and to study the influence factor of airborne radioactive source term thus to decrease occupational exposure dose.
Methods:
2
This paper constructed a computational model of airborne radioactive concentration in fuel handling area. Variations of typical radionuclide were analyzed. Then
we studied the effluences of radionuclide types
ventilation flow on airborne radioactive concentration and the main sources of radioactivity.
Results:
2
The maximum values of airborne radioactive concentration for all radionuclides during refueling should be treated as design values instead of the values at a certain moment or at the end of refueling. There is an inverse relation between the ratio of ventilation flow to net volume of fuel handling area
λ
h
and airborne radioactivity concentration
the radioactivity in reactor coolant is the main source of airborne radioactivity.
Conclusion:
2
Adjusting ventilation flow
reducing radioactivity in coolant and decreasing evaporation are the main ways to reduce airborne radioactivity.
核动力厂环境辐射防护规定:GB 6249-2011 . 核动力厂环境辐射防护规定:GB 6249-2011 .
Regulatory Guide 1 . 70, Standard format and content of safety analysis reports for nuclear power plants 12 .
NUREG 0800 , Standard review plan 12 . 2 .
林 晓玲 , 杨 永新 . 应急排风对缓解核事故辐射后果的理论计算 . 核动力工程 , 2013 . 34 ( 2 ): 60 - 62 .
LIN Xiaoling , YANG Yongxin . Theoretical calculation and analysis of emergency ventilation to reduce nuclear accident consequence . Nuclear Power Engineering , 2013 . 34 ( 2 ): 60 - 62 .
林 晓玲 , 牛 文亮 , 陈 迎锋 . 应急排风对缓解核事故辐射后果的试验研究 . 核动力工程 , 2013 . 34 ( 3 ): 124 - 126 .
LIN Xiaoling , NIU Wenliang , CHEN Yingfeng . Experimental study on emergency ventilation to reduce nuclear accident consequence . Nuclear Power Engineering , 2013 . 34 ( 3 ): 124 - 126 .
刘 圆圆 , 郑 鹏 , 杨 阳 , . 核电厂气载放射性物质源模型及审核关键点 . 核技术 , 2013 . 36 ( 12 ): 120606 .
LIU Yuanyuan , ZHENG Peng , YANG Yang , . Models and key points of review for airborne radioactive source terms in nuclear power plants . Nuclear Techniques , 2013 . 36 ( 12 ): 120606 .
刘 圆圆 , 郑 鹏 , 刘 建 , . 核电厂气载放射性物质源通用归一化快速建模方法研究 . 核电子学与探测技术 , 2013 . 33 ( 9 ): 1065 - 1069 .
LIU Yuanyuan , ZHENG Peng , LIU Jian , . Study of universal normalization rapid modeling method for airborne source terms in NPPs . Nuclear Electronics & Detection Technology , 2013 . 33 ( 9 ): 1065 - 1069 .
白 婴 , 王 益伟 , 周 巍 . 压水堆核电厂厂房内气载放射性活度的分析与评价 . 核动力工程 , 2014 . 35 ( 4 ): 168 - 171 .
BAI Ying , WANG Yiwei , ZHOU Wei . Analysis and evaluation of airborne radioactivity concentration in PWR nuclear plants . Nuclear Power Engineering , 2014 . 35 ( 4 ): 168 - 171 .
Regulations for environmental radiation protection of nuclear power plant:GB 6249-2011 . Regulations for environmental radiation protection of nuclear power plant:GB 6249-2011 .
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