随着工业的发展 ,Ｘ射线在压力容器、化工设备等金属材 料探伤中占有相当重要的位置。室外操作时部分操作人员由于对射线的性质认识不足 ,对操作位置选择不当。为保障操作人员的安全我们对室外操作不同型号的十二台工业Ｘ射线机进行了测定 ,以探讨Ｘ射线探伤机的最佳操作位置。 With the development of industry, X-ray occupies a very important position in the detection of metal materials such as pressure vessels and chemical equipment. Some outdoor operation operators due to the nature of the lack of understanding of the operating position of improper choice. In order to protect the safety of operators, we conducted a series of tests on twelve outdoor X-ray machines of different types for outdoor operation to explore the best operating position of the X-ray flaw detection machine.