某化工企业密封源装置辐射防护安全评价

Radiation Protection Safety Evaluation of Sealed Source Device in Chemical Enterprise

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 appraise the safety of radiological health protection on sealed source device in the chemical enterprise. Methods Based on the national related standards,the radiation level of the places which were apart from the source vessel surface 5,50,100 cm were examined and the peripheral environment place was evaluated at the time when reserve source gateway was closed and opened,at the same time,the radiation shield safety was evaluated. Results When vessel source floodgate was closed,the radiation level was 0.32-66.36 uSv/h at the places which were apart from source vessel surface 5,50,100 cm and 0.02-2.76 uSv/h vessel at the peripheral environmental place. Conclusion The sealed source device of the chemical industry conforms to the national radiological health protection standards. The exposure dosage of the radiation staff is lower than that of the national standards.