辐射防护 ›› 2016, Vol. 36 ›› Issue (1): 1-6.

• 论文报告 • 上一篇    下一篇

核电厂运行现场高能γ射线的剂量调查

陈法国1, 游兆金2, 王斌2, 张庆利1, 沈华亚1, 韩毅1   

  1. 1.中国辐射防护研究院,太原 030006;
    2.中核核电运行管理有限公司,浙江 海盐 314300
  • 收稿日期:2014-08-18 出版日期:2016-01-20 发布日期:2021-11-12
  • 作者简介:陈法国(1987—),男,2008年毕业于清华大学核工程与核技术专业,助理研究员。E-mail:chenfaguo1@126.com

Dose investigation of high gamma rays in operating nuclear power plant

Chen Faguo1, You Zhaojin2, Wang Bin2, Zhang Qingli1, Shen Huaya1, Han Yi1   

  1. 1. China Institute for Radiation Protection,Taiyuan 030006;
    2. CNNC Nuclear Power Operations Management Co. Ltd,Zhejiang Haiyan 314300
  • Received:2014-08-18 Online:2016-01-20 Published:2021-11-12

摘要: 在核电厂正常运行期间,反应堆冷却剂系统内存在能够发射高能γ射线的16N等放射性核素。为了初步掌握核电厂运行期间不同区域内高能γ射线的辐射水平,利用NaI(Tl)谱仪在国内某核电站测量了反应堆厂房内的γ能谱,并根据γ测量谱和测量系统的响应函数计算了能量大于3 MeV的γ射线的场所剂量率。结果显示:在15个测量位置中,6个位置的γ测量谱中存在明显的高能成分,其对应的剂量率在1.02~30.14 μSv/h范围内。

关键词: NaI(Tl)γ谱仪, 高能γ射线, 最小二乘法, Gold迭代法

Abstract: During the operation of nuclear power plant, there are radioactive nuclides in the reactorcoolant system, 16N etc, which decay with emission of high energy gamma rays. But most of the portable gamma dosimeters are not suitable to measure the dose of high gamma rays due to the weakness of energy response. In order to investigate the radiation level of high energy gamma rays at different areas of reactor building,spectra were measured using NaI(Tl) detector during the operation of a nuclear power plant. Then, the dose rate of high gamma rays (>3 MeV) was calculated by using the measured spectrum and response function of detector system. The results showed that: in all fifteen measurement locations, high gamma rays were observed obviously in measured spectra of six locations, corresponding to the dose rates in the range of 1.02—30.14 μSv/h.

Key words: NaI(Tl) γ spectrometer, high energy gamma rays, least square method, Gold iterative method

中图分类号: 

  • TL75+1