辐射防护 ›› 2018, Vol. 38 ›› Issue (6): 466-469.

• 辐射防护监测 • 上一篇    下一篇

防城港核电厂气态流出物取样监测探测限影响因素分析

侯杰1, 李雯婷1, 黄力1, 韩善彪1, 高渝忠2, 王瑞英1, 李雳1, 李冰1, 岳会国1, 陈晓秋1   

  1. 1.生态环境部核与辐射安全中心,北京 100082;
    2.广西防城港核电厂有限公司,广西 防城港 538001
  • 收稿日期:2018-03-09 出版日期:2018-11-20 发布日期:2020-07-21
  • 通讯作者: 侯杰(1986—),男,2008年本科毕业于天津理工大学安全工程专业,2017年博士毕业于中国原子能科学研究院辐射防护与环境保护专业。E-mail:firhj@163.com

Factors affecting detection limits of aerosol sampling in Fangchenggang nuclear power plant

HOU Jie1, LI Wenting1, HUANG Li1, HAN Shanbiao1, GAO Yuzhong2, WANG Ruiying1, LI Li1, LI Bing1, YUE Huiguo, CHEN Xiaoqiu1   

  1. 1. Nuclear and Radiation Safety Center, Ministry of Ecology and Enviroment, Beijing 100082;
    2. Fangchenggang Nuclear Power Station Co., Ltd., Guangxi Fangchenggang 538001
  • Received:2018-03-09 Online:2018-11-20 Published:2020-07-21

摘要: 对防城港核电厂一期机组中气态流出物取样监测的最小可探测限的影响因素进行分析,计算了取一定置信度和相对标准偏差时对应的气态流出物中不同核素的最小可探测限。分析了不同测量时间下,相对标准偏差与净计数率的关系。结果表明当机组烟囱气态流出物中的放射性排放速率至少达到计算水平时,测量值才能高于系统最小可探测限。该结果对其它核电机组制订气态流出物监测大纲具有一定参考作用。

关键词: 防城港核电厂, 气态流出物, 探测下限, 气溶胶取样系统

Abstract: The low limit detection (LLD) and the influencing factors for air effluent sampling monitoring in first stage of Fangchenggang nuclear power plant was studied. The LLD of different radioactive isotopes in air effluent with certain relative standard deviation under certain confidence level was calculated. The relationship of the relative standard deviation varying with net counting rate in different counting time was analyzed. The results showed that only when the radioactive release of air effluent approached to the calculated level, the air effluent monitoring was able to get a meaningful outcome. The analysis provides a reference for other nuclear power stations to make their own air effluent monitoring program.

Key words: Fangchenggang NPP, air effluent, low limit detection, aerosol sampling system

中图分类号: 

  • TL75+1