关键词: 工业辐照, 电子加速器, 10 MeV, 放射防护, 控制效果

Abstract: Objective To evaluate the radiation protection control effect of a 10 MeV electron accelerator construction project for industrial irradiation in a company in Guangxi,and to ensure the radiation safety and health of the radiation workers in the construction unit. Methods In January 2024,the evaluation unit carried out on-site inspection of its industrial irradiation workplace according to the current laws,regulations,rules,normative documents and technical standards,and collected project data to comprehensively evaluate the radiation protection control effect of the construction project. Results During normal operation under rated working conditions,the ambient dose equivalent rate of X、γ ray measured 30 cm outside the shielding walls and entrances/exits of the accelerator room and the irradiation room and the entrance and exit was from 0.05 to 0.46 μSv/h,and the ambient dose equivalent rate of neutron was not detected,which met the limit requirements of GBZ 141-2002 "protection and detection specifications for γ-ray and electron beam irradiation devices". The occupational radiation dose potentially received by the workers over one year was approximately 0.98 mSv,which was less than the annual dose management target value of 5 mSv. Conclusion The radiological protection control measures during normal production operations meet the legal,regulatory,and standard requirements for occupational disease prevention and treatment at both the national and local levels. Therefore,the construction project satisfies the conditions for completion and acceptance.

Key words: Industrial irradiation, Electron accelerator, 10 MeV, Radiological protection, Control effectiveness