Development of an online radioactive xenon gas monitoring system for nuclear facilities
10.13491/j.issn.1004-714X.2024.01.010
- VernacularTitle:核设施气态放射性氙在线监测系统研制
- Author:
Luzhen GUO
1
;
Hongchao PANG
1
;
Chuangao WANG
1
;
Yanbiao ZHANG
1
;
Ying WANG
1
;
Mengmeng WU
1
;
Xinfang DONG
1
;
Ling CHEN
1
Author Information
1. China Institute of Atomic Energy, Beijing 102413 China.
- Publication Type:OriginalArticles
- Keywords:
Membrane separation;
Selective adsorption;
Low-background measurement;
Xenon online monitoring
- From:
Chinese Journal of Radiological Health
2024;33(1):56-60
- CountryChina
- Language:Chinese
-
Abstract:
Objective Nowadays, radioactive xenon isotopes, including 131mXe, 133mXe, 133Xe, and 135Xe, are primarily released into the atmosphere through various reactor operation and major accidents of reactors. To improve the online monitoring capability of xenon in nuclear facilities and their gaseous effluents, a highly sensitive online xenon monitoring system was developed to monitor, warn, and alarm the activity concentration of radioactive xenon. Methods The online monitoring system for radioactive xenon gas in nuclear facilities was established using xenon membrane separation and concentration, xenon high-efficiency selective adsorption, and low-background gamma-ray spectrometry analysis methods. Results Under the operation mode of one-hour sampling and one-hour measuring, the minimum detectable activity concentration of the radioactive xenon online monitoring system for 133Xe was approximately (1.43 ± 0.03) Bq/m3. Conclusion This system can be effectively used for online monitoring of xenon activity concentration in nuclear facilities such as nuclear power plants and isotope production reactors, as well as in gaseous effluents. It helps improve the safety level of personnel, the environment, and nuclear facilities.
