Unmanned stationary online monitoring system based on buoy for marine gamma radioactivity

Jinlin Song; Pin Gong; Peng Wang; Jinzhao Zhang; Zhimeng Hu; Cheng Zhou; Xiaoxiang Zhu; Qing Wei; Jian Zhou; Xiaobin Tang

doi:10.1016/j.apradiso.2022.110528

Unmanned stationary online monitoring system based on buoy for marine gamma radioactivity

Appl Radiat Isot. 2023 Jan:191:110528. doi: 10.1016/j.apradiso.2022.110528. Epub 2022 Nov 1.

Authors

Jinlin Song¹, Pin Gong², Peng Wang³, Jinzhao Zhang⁴, Zhimeng Hu⁵, Cheng Zhou⁶, Xiaoxiang Zhu⁶, Qing Wei⁷, Jian Zhou⁷, Xiaobin Tang⁵

Affiliations

¹ Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China.
² Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China; Key Laboratory of Nuclear Technology Application and Radiation Protection in Astronautics, Ministry of Industry and Information Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China. Electronic address: gongpin@nuaa.edu.cn.
³ School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
⁴ Third Institute Oceanography Ministry of Natural Resources, Xiamen, 361005, China.
⁵ Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China; Key Laboratory of Nuclear Technology Application and Radiation Protection in Astronautics, Ministry of Industry and Information Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China.
⁶ Jiangsu Nuclear and Radiation Safety Supervision and Management Center, Nanjing, 210019, China.
⁷ Jiangsu Province Nuclear Radiation Science and Technology Co., Ltd, Nanjing, 210019, China.

PMID: 36379133
DOI: 10.1016/j.apradiso.2022.110528

Abstract

Research on unmanned online monitoring equipment for marine radioactivity surrounding nuclear power plants is of great significance. In this work, a small radioactivity monitoring system based on buoy was designed and manufactured for the emergency situation of nuclear accidents. The core of the radioactivity monitoring system is the underwater gamma spectrometer. The spectrometer can respond to gamma rays from 60 keV to 3 MeV, and can identify the nuclides whose characteristic rays belong to this energy range. The detection efficiency curve was calculated through Monte Carlo simulation and verified in a standard liquid source. A data acquisition processor was also designed to coordinate the detectors in the system and wirelessly transmit online monitoring data. Three experiments were carried out in the seawater around the Tianwan Nuclear Power Plant in Lianyungang, China using this online marine radioactivity monitoring system based on buoys. The stability and radioactivity monitoring capabilities of the system have been verified.

Keywords: Data collection and transmission; Detection efficiency calibration; Marine gamma radioactivity monitoring; Unmanned online monitoring system.

MeSH terms

Gamma Rays
Monte Carlo Method
Radiation Monitoring* / methods
Radioactivity*
Spectrometry, Gamma / methods