某钢铁企业放射源应用及放射防护管理现状调查

Investigation on the protection and application of radiation sources in an iron and steel corporation

目的了解钢铁企业放射源应用情况和放射防护管理现状,为完善企业辐射防护规章制度及放射防护管理提供依据。方法收集放射源基本信息及企业放射防护资料,并对该企业放射源进行现场监测调查,结合国家相关标准进行综合性评价分析。结果该企业共有放射源332枚,放射性活度范围0.0925GBq～1.85TGBq,总活度为12.289TBq,以Ⅳ类和Ⅴ类源为主,占全部源的91.27%。放射防护管理主要措施有统一监督,分级管理,责任制度等。结论该企业放射源辐射水平符合GBZ114-2002《使用密封源放射源的放射卫生防护标准》剂量限值要求,需进一步规范健全放射源安全监管体系。

Objective To understand the situation of the radiation protection,supervision and management of ionizing radiation in an iron and steel corporation,so as to provide information for further improvement.Methods All the information about management of radiation sources and radiation protection were collected,and the data of the intensity of the radiation sources were measured.A systematic evaluation was undertaken according to the correlated national standards.Results There were 332 radiation sources in this iron and steel corporation.the range of radiation intensity was from 0.0915GBq to 1.85TBq,the total radiation intensity was 12.289TBq.The main categorization of radiation source was Ⅳ and Ⅴ,accounting for 91.27%.The main managerial measures were： unified supervision,graded management and responsibility system.Conclusions The level of radiation intensity was conformed with the Chinese Dose Limitation Standard in ＂GBZ114-2002＂;the protection measures and managerial regulation were basically complete,however,the safety supervision system needs to be further standardized.