Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (4): 100 doi: 10.1007/s41365-016-0077-7

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Radiation protection in the design of c-ray industrial computed tomography systems

Ri-Feng Zhou 1 , Xiao-Jian Zhou2 , Xiao-Bin Li 1, Ping Li 3   

  1. 1 The Key Laboratory for Opto-electronic Technology and Systems of Ministry of Education, ICT Research Center, University of Chongqing, Chongqing 400044, China
    2 Nuclear and Radiation Safe Center, Ministry of Environmental Protection of People’s Republic of China, Beijing 100082, China
    3 Environmental Protection Agency of Chongqing, Chongqing 401147, China
  • Contact: Ri-Feng Zhou E-mail:zurifg@163.com
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Ri-Feng Zhou, Xiao-Jian Zhou, Xiao-Bin Li, Ping Li. Radiation protection in the design of c-ray industrial computed tomography systems.Nuclear Science and Techniques, 2016, 27(4): 100     doi: 10.1007/s41365-016-0077-7
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Abstract:

The recent increasing use of γ-ray industrial computed tomography (γ-ray ICT) in various fields has induced greater attention to its performance as well as to considerations of radiation safety. It is understood that radiation protection planning cannot be sacrificed for the sake of CT image quality during the design, manufacture, and layout of γ-ray ICT systems. In the present work, we describe a typical γ-ray ICT system in brief, and, based on experience and pertinent examples, we propose design requirements for ensuring the radiation safety of the sealed radioactive source, source container, and workspace. The design examples and dose rate measurement results illustrate that the proposed design standards are reasonable, feasible, and safe, and are therefore meaningful for the design, manufacture, and layout of γ-ray ICT systems. This paper discussed the predominant measures associated with the radiation protection of γ-ray ICT systems in accordance with the pertinent Chinese standards. In addition, based on experience and pertinent examples, the design requirements for ensuring the radiation safety of a sealed radioactive source, source container, and workspace were defined in detail. The design examples and dose rate measurements conducted in conjunction with a γ-ray ICT system and workspace employing the proposed design standards have illustrated that the proposals provided in this paper are reasonable, feasible, and safe, and are therefore meaningful for the design, manufacture, and layout of γ-ray ICT systems.

Key words: γ-ray industrial computed tomography, Radiological protection, Sealed radioactive sources, Source container