某焦化厂新建同位素装置放射防护控制效果评价

目的 对某焦化厂新建同位素装置进行放射防护控制效果评价。方法 通过现场监测，按照标准对辐射源安全级别，场所辐射防护区域，工作人员接受的剂量水平进行分析评价。结果 只有一处密封辐射源仪表的安全级别属3级，其余均符合4级标准；1m外工人接受的最大剂量估算值小于国标规定的公众年剂量限值要求。结论 该焦化厂新装同位素装置场所基本符合国家规定。

Evaluation of the Radiation Preventive Effect of a Newly-founded Isotope Device in a Coking Factory

Objective] To evaluate the radiation preventive effect of a newly-founded isotope device in a coking factory.Methods] Analysis and evaluation were carried out on the safety grade of the radiation source,radiation prevention site and the exposure dose level of the working staff.Results] Only one sealed radiation source belonged to safety grade III,others all accorded with the standard grade IV,the workers' maximal exposure dose out of the range of 1 m was lower than that of the national standard.Conclusion] The newly-founded isotope device in this coking factory accords with the national standard.