核电厂运行现场高能γ射线的剂量调查

Abstract

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

CLC Number:

TL75+1

Chen Faguo, You Zhaojin, Wang Bin, Zhang Qingli, Shen Huaya, Han Yi. Dose investigation of high gamma rays in operating nuclear power plant[J].RADIATION PROTECTION, 2016, 36(1): 1-6.

[1]	WU Hao, WANG Chuangao, ZHENG Guowen, PANG Hongchao, LUO Zhiping, CHEN Ran, CHEN Ling, WANG Zhongwen. Study on the optimization of sample introduction flow rate for aerosoldirect injection device and aerosol loss rate [J]. RADIATION PROTECTION, 2021, 41(1): 27-32.
[2]	DU Yunwu, DENG Xiaoqin, MAO Wanchong, ZHANG Li. Tritium distribution characteristics and evaluation of effective publicannual dose around China Nuclear Power Institute [J]. RADIATION PROTECTION, 2021, 41(1): 33-38.
[3]	SHA Xiangdong, HUANG Yanjun, ZENG Fan, SHANGGUAN Zhihong, JIANG Jing, WU Liansheng, CAO Zhonggang, CHEN Chaofeng. An investigation on discharge and analytical methods of ⁵⁵Fe in liquid effluents from PWRs of nuclear power plants [J]. RADIATION PROTECTION, 2020, 40(5): 394-401.
[4]	HUANG Yilin, HE Xianwen, FENG Liangliang, PENG Chong, CHEN Baocai, ZHOU Hualong, LIN Mingmei, LIN Wuhui, GUAN Yongjing. Investigation for radioactivity level during the exploitation and utilization of mines associated with radioactivity in Guangxi [J]. RADIATION PROTECTION, 2020, 40(4): 278-285.
[5]	LI Hua, LI Jiannan, GUO Jie, LIAO Tong. Calculated simulation of the influence of liquid effluentfrom nuclear power plant on Yangjiang sea area [J]. RADIATION PROTECTION, 2019, 39(4): 267-273.
[6]	WANG Qianxue, WU Wenbao, YUAN Xiumei, WANG Xiyuan. Discussion on the method of indoor radon measurement [J]. RADIATION PROTECTION, 2019, 39(3): 198-201.
[7]	ZHOU Zidan, XIAO Detao, XIAO Yongjun, SUN Changhao, SONG Shiyu, WANG Libin, LI Weiwei. Study on outdoor radon level in Chejiang copper mine [J]. RADIATION PROTECTION, 2019, 39(3): 202-206.
[8]	LI Xiaoyun, PAN Jingshun, LOU Hailin, XU Xutao, ZHAO Yang, WEN Fuping. Measurement of released tritium from nuclear facilities bydirect liquid scintillation counting [J]. RADIATION PROTECTION, 2019, 39(2): 111-117.
[9]	WANG Lei, WANG Xiaofen, ZHAO Shunping. Environmental monitoring of radiation level around NPP bases in China [J]. RADIATION PROTECTION, 2019, 39(2): 118-123.
[10]	WANG Chuan, WEI Yingjing, NI Wei, LIU Liye, CHEN Chenxiang, CAO Qinjian. Investigation on weak penetration radiation of valves in Qinshan phase II nuclear power plant [J]. RADIATION PROTECTION, 2018, 38(6): 457-464.
[11]	HOU Jie, LI Wenting, HUANG Li, HAN Shanbiao, GAO Yuzhong, WANG Ruiying, LI Li, LI Bing, YUE Huiguo, CHEN Xiaoqiu. Factors affecting detection limits of aerosol sampling in Fangchenggang nuclear power plant [J]. RADIATION PROTECTION, 2018, 38(6): 466-469.
[12]	WANG Xie, REN Zhongguo, XIONG Zhonghua. Application of computational fluid dynamics method in the analysis of representative aerosol sampling in the pipeline of nuclearfacility [J]. RADIATION PROTECTION, 2018, 38(6): 471-478.
[13]	HOU Bingjun. Analysis on time difference in dose comparison of TLD and EPD [J]. RADIATION PROTECTION, 2018, 38(5): 372-375.
[14]	LI Sixuan, HUANG Wenna, WANG Zhongtang, GUO Qiuju. Measurement of uranium isotopes in environmental samples by ICP-MS [J]. RADIATION PROTECTION, 2018, 38(4): 270-274.
[15]	GUO Qingli, WANG Yan, LI Xianjie. Radionuclide transport and radiation protection in production process ofZrOCl₂ from zircon sand in a factory [J]. RADIATION PROTECTION, 2018, 38(4): 293-299.

Dose investigation of high gamma rays in operating nuclear power plant

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 0