Environmental Monitoring and Evaluation of the X-Ray Field Flaw Inspection Workplace in a Factory Building

¹ Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
² State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
³ School of Information science and Engineering, Harbin Institute of Technology at WeiHai, WeiHai 264209, China
⁴ School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
⁵ No. 1 institute of geology and mineral resources of Shandong Province, Jinan 250010, China
⁶ Qingdao Institute of Textile Fiber Supervision and Inspection, Qingdao 266000, China

^* Corresponding author: 18660407217@163.com; hitxiewei@163.com

Abstract

The surrounding radiation environment of the field flaw detection workplace has been theoretically calculated and monitored on site when an industrial X-ray flaw detector in a factory building is operated during the field flaw detection. The results show that when 5mA tube current and 250 kV tube voltage penetrate the steel tube at the thickness of 16mm twice, the calculated value of the air kerma rate at the inspection point is basically consistent with the measured value. Additionally, the boundary of the controlled area and the supervised area corresponded to the measured value along the main beam direction belongs to the wall in the east of the workshop. The calculated distances of the leaking beam corresponding to the boundary of the controlled area and the supervised area of the calculated value should be 19m and 58m, respectively. The minimum and maximum distances of the controlled area of the measured value are 13m and 17m, respectively; while the maximum and minimum distances of the supervised area of the measured value are 31m and 36m, respectively, both areas are within the workshop. Meanwhile, annual effective doses that might be accepted by professionals and the public have been estimated.