辐射防护 ›› 2018, Vol. 38 ›› Issue (6): 457-464.

• 辐射防护监测 • 上一篇    下一篇

秦山第二核电厂阀门类设备弱贯穿辐射调查

王川1, 韦应靖2, 倪伟1, 刘立业2, 陈琛祥1, 曹勤剑2   

  1. 1.中核核电运行管理有限公司,浙江 海盐 314300;
    2.中国辐射防护研究院,太原 030006
  • 收稿日期:2018-08-06 出版日期:2018-11-20 发布日期:2020-07-21
  • 通讯作者: 韦应靖。E-mail:weiyj531@sina.com
  • 作者简介:王川(1970—),男,1992年毕业于南京大学核物理专业,2008年获上海交通大学核工程专业硕士学位,研究员级高级工程师。E-mail:wchuan01@cnnp.com.cn

Investigation on weak penetration radiation of valves in Qinshan phase II nuclear power plant

WANG Chuan1, WEI Yingjing2, NI Wei1, LIU Liye2, CHEN Chenxiang1, CAO Qinjian2   

  1. 1. CNNC Nuclear Power Operations Management Co., Ltd., Zhejiang Haiyan 314300;
    2. China Institute for Radiation Protection, Taiyuan 030006
  • Received:2018-08-06 Online:2018-11-20 Published:2020-07-21

摘要: 在秦山第二核电厂8次大修期间,对反应堆冷却剂系统(RCP)、余热排出系统(RRA)、化学和容积控制系统(RCV)、反应堆换料水池和乏燃料水池冷却和处理系统(PTR)4个系统主要阀门的辐射源项和弱贯穿辐射进行了监测。测得RCV系统阀门沉积的放射性核素主要是110mAg,RCP、RRA和PTR系统阀门内沉积的主要是58Co、60Co、51Cr、95Nb、95Zr等放射性核素,伴随的β射线能量主要在500 keV范围内。测量给出了4类阀门的公式′(0.07)和′(3)值,测得′(3) /*(10)值在1.24左右,′(0.07) /*(10)值在14左右。结合测量结果,给出了部分阀门需要对检修人员开展眼晶体剂量和皮肤剂量监测的建议。

关键词: 核电厂, 阀门, 放射性, 弱贯穿辐射

Abstract: The radiation sources and weak penetration radiation of the main valves in four systems of the RCP, RRA, RCV and PTR are monitored during the eight outages in Qinshan phase II nuclear power plant. 110mAg is the main radioactive nuclide measured in valve deposition of RCV system. 58Co,60Co,95Nb,95Zr,51Cr and other radionuclides are deposited in valves of RCP, RRA and PTR systems. The associated β ray energy is mainly in the range of 500 keV. The*(10),H·′(0.07) and H·′(3) are measured for four types of valves. The value of H·′(3) /H·*(10) is about 1.24, and the value of H·′(0.07)/H·*(10) is about 14. According to the measurement results, monitoring of eye lens and skin dose for maitenance workers in some key valves are suggested.

Key words: nuclear power plant, valve, radiological, weak penetration radiation

中图分类号: 

  • TL75+1