Radioactive source localization inside pipes using a long-range alpha detector

  • Long-range alpha detectors (LRADs) are attracting much attention in the decommissioning of nuclear facilities because of some problems in obtaining source positions on an interior surface during pipe decommissioning. By utilizing the characteristic that LRAD detects alphas by collecting air-driving ions, this article applies a method to localize the radioactive source by ions' fluid property. By obtaining the ion travel time and the airspeed distribution in the pipe, the source position can be determined. Thus this method overcomes the ion's lack of periodic characteristics. Experimental results indicate that this method can approximately localize the source inside the pipe. The calculation results are in good agreement with the experimental results.
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  • [1] WANG G, FU K, YAO C S et al. Nucl. Instrum. Methods A, 2012, 663: 10[2] MacArthur D W, Allander K S, Bounds J A et al. Los Alamos National Lab., NM LA-12199-MS. 1991[3] Johnson J D, Allander K S, Bounds J A et al. Nucl. Instrum. Methods A, 1994, 353: 486[4] Rojas S P, Rawool-Sullivan M W et al. Waste Management '95 Conference Tucson, LA-UR-95-174. 1995[5] Whitley C R, Adams J R, Bounds J A et al. New Mexico Conference on the Environment, Albuquerque LA-UR-96-578. 1996[6] Rawool-Sullivan M W, Conaway J G, MacArthur D W et al. Los Alamos National Laboratory, LA-13063-MS. 1996[7] TUO Xian-Guo, LI Zhe, MU Ke-Liang et al. Journal of Nuclear Science and Technology, 2008, supplement 5. 282[8] HUANG Lian-Mei. Research on Key-parameter Experiments and PLS-BP Correction Approach: LRAD Measurements Inside Pipes (Master Thesis). Chengdu: Chengdu University of Technology, 2011 (in Chinese)[9] WU Xue-Mei, TUO Xian-Guo, LI Zhe et al. Nuclear Techniques, 2012, 35: 369[10] Bouhadef B. Nucl. Instrum. Methods A, 2009, 604: S230[11] WU Yan, GAO Jia-Rong, HU Yong-Peng. New Technology New Process, 2010, 10: 33[12] JIANG Xiao-Fang, CAO Xi-Jing, SI Zhen-Peng. Process Equipment Piping, 2009, 46: 0046
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WU Xue-Mei, TUO Xian-Guo, LI Zhe, LIU Ming-Zhe, ZHANG Jin-Zhao, DONG Xiang-Long and LI Ping-Chuan. Radioactive source localization inside pipes using a long-range alpha detector[J]. Chinese Physics C, 2013, 37(8): 086201. doi: 10.1088/1674-1137/37/8/086201
WU Xue-Mei, TUO Xian-Guo, LI Zhe, LIU Ming-Zhe, ZHANG Jin-Zhao, DONG Xiang-Long and LI Ping-Chuan. Radioactive source localization inside pipes using a long-range alpha detector[J]. Chinese Physics C, 2013, 37(8): 086201.  doi: 10.1088/1674-1137/37/8/086201 shu
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Received: 2012-08-29
Revised: 1900-01-01
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Radioactive source localization inside pipes using a long-range alpha detector

    Corresponding author: WU Xue-Mei,
    Corresponding author: TUO Xian-Guo,

Abstract: Long-range alpha detectors (LRADs) are attracting much attention in the decommissioning of nuclear facilities because of some problems in obtaining source positions on an interior surface during pipe decommissioning. By utilizing the characteristic that LRAD detects alphas by collecting air-driving ions, this article applies a method to localize the radioactive source by ions' fluid property. By obtaining the ion travel time and the airspeed distribution in the pipe, the source position can be determined. Thus this method overcomes the ion's lack of periodic characteristics. Experimental results indicate that this method can approximately localize the source inside the pipe. The calculation results are in good agreement with the experimental results.

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