石油化工行业中许多在用设备从安全角度出发,按国家规定实行定期现场检测。由于在用设备内部件都已就位,受条件的影响,使用X射线机照相难度很大。使用γ源现场能在狭窄的空间里出色完成在用设备的定期检定,相应地γ源检测过程中对周围环境的辐射防护问题,有必要进行分析、研究 Many petrochemical industry equipment in use from the security point of view, according to the provisions of the state on a regular basis on-site testing. Due to the in-use components have been in place, subject to conditions, the use of X-ray machine photography is very difficult. The use of γ-source in the field can be excellent in a narrow space to complete the equipment used in the regular test, the corresponding gamma radiation detection of the environment during the radiation protection issues, the need for analysis, research