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目的对某企业2台60Co液位计的放射防护水平进行检测评价。方法在安装的密封放射源处,源容器源闸关闭和开启时,应用射线巡测仪对距源容器5 cm、100 cm及周边环境辐射水平进行检测。结果在源容器源闸关闭时,距源容器表面5、100 cm处辐射水平为0.33~3.13μSv/h,液位计工作状态下工作场所和相邻环境辐射水平为0.15~0.28μSv/h。结论该企业密封源装置使用时的工作场所卫生防护符合标准要求,在正常运行状态下不会对工作人员及公众产生明显的辐射影响。
Objective To evaluate the radioprotection level of two 60Co liquid level meters in an enterprise. Methods At the sealed sealed radioactive source, when the source container gate is closed and opened, a 5 mm, 100 cm distance from the source container and the radiation level of the surrounding environment should be detected by using a ray detector. Results The radiation level at the 5,100 cm distance from the source container surface was 0.33 ~ 3.13μSv / h when the source container gate was closed and the radiation level at the working place and adjacent environment of the gauge was 0.15 ~ 0.28μSv / h. Conclusion The workplace hygiene protection of the sealed source device of the enterprise meets the standard requirements and will not cause obvious radiation effects to the staff and the public under normal operation.