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目的评价某化工企业密封源装置放射卫生防护安全性。方法依据《电离辐射防护与辐射源安全基本标准》等相关标准,检测在储源闸关闭和开启时,距源容器表面5、50、100cm及周边环境处辐射水平并进行辐射防护安全评价。结果在源容器源闸关闭时,距源容器表面5、50、100cm处辐射水平为0.32～66.36μSv/h;液位计工作状态下工作场所和相邻环境为0.02～2.76μSv/h。结论该化工企业密封源装置符合国家放射卫生防护标准。放射工作人员受照剂量低于国家标准。
Objective To evaluate the safety of radiation protection of a sealed source device in a chemical enterprise. Methods Based on the relevant standards of “basic standards for ionizing radiation protection and radiation source safety”, the radiation levels at 5, 50, 100 cm from the source container surface and the surrounding environment at the time of closure and opening of the storage gate were measured and safety evaluation of radiation protection was carried out. Results The level of radiation at 5, 50 and 100 cm from the surface of the source container was 0.32 ~ 66.36μSv / h when the source container gate was closed. The working place and adjacent environment of the gauge were 0.02 ~ 2.76μSv / h. Conclusion The chemical industry sealed source device in line with national standards for radioactive health protection. Exposure of radiation workers dose lower than the national standard.