摘要
目的:研制一种新型放射性表面污染监测仪探测窗防护装置,并验证其测试效果。方法:新型表面污染监测仪探测窗防护装置包括防护膜和固定边框,为一体化设计,一次性生产。防护膜由透明的平面迈拉膜制成,厚度≤2.5μm,固定边框是由4条边围成的矩形中空结构,设有工作面和安装面。防护膜通过胶粘剂粘贴于固定边框工作面的内侧壁,防护膜及固定边框借助弹性固定卡扣安装在表面污染监测仪探测窗的外侧。选取RDa150型和Como170型两款常用的表面污染检测仪,在无膜防护、保鲜膜防护和新型防护装置3种防护状态下测量人工放射源,以验证新型表面污染监测仪探测窗防护装置的测试效率及可操作性。结果:新型表面污染监测仪探测窗防护装置相较于传统的保鲜膜防护措施,可更有效地保证α射线、β射线和γ射线的探测效率,α射线的检测效率由40%左右提高至70%左右。结论:新型表面污染监测仪探测窗防护装置能够显著提高放射性污染尤其是α射线污染的探测效率,并可对仪器设备进行有效防护,提高表面污染检测操作者的检测效率。
Objective:To develop a new type of detection window protective device for surface contamination monitor,and to verify its testing effect.Methods:The new type of surface contamination monitor detection window protection device was composed of the protective film and fixed frame,which was of integrated design and one-off production.The protective film was made of transparent flat Myra film,thickness≤2.5μm,the fixed frame was a rectangular hollow structure surrounded by four edges and provided with a working surface and a mounting surface.The protective film was pasted on the inner wall of the working surface of the fixed frame by adhesive,and the protective film and fixed frame were installed on the outside of the detection window of the surface contamination monitor by means of fixing buckles.Two commonly used surface contamination detection instruments,RDa150 and Como170,were selected to measure artificial radiation sources under three protection states:no film protection,plastic wrap protection and new protection device to test the detection efficiency and operability of the new surface contamination monitor's detection window protection device.Results:Compared with the traditional protective measures of plastic wrap,the detection efficiency ofα,βandγrays was more effectively ensured by the new detection window protective device for surface contamination monitor,and the detection efficiency ofαrays was increased from about 40%to about 70%.Conclusion:The new detection window protection device for surface contamination monitor can significantly improve the detection efficiency of radioactive contamination,especially alpha-ray pollution,and effectively protect the instrument and equipment,and effectively improve the detection efficiency of surface contamination detection operators.
作者
朱磊
刘明浩
郭姗姗
白帆
杨超
闫涛
Zhu Lei;Liu Minghao;Guo Shanshan;Bai Fan;Yang Chao;Yan Tao(Department of General Medicine,PLA Rocket Force Characteristic Medical Center,Beijing 100088,China;Department of Hepatobiliary Surgery,PLA Rocket Force Characteristic Medical Center,Beijing 100088,China)
出处
《中国医学装备》
2024年第3期144-147,173,共5页
China Medical Equipment
基金
2022年度军队后勤自主科研项目(HQKY22006)
火箭军特色医学中心科研创新项目ZXKC19013(41C48D)。
关键词
Α射线
表面污染检测
保鲜膜防护
新型表面污染监测仪探测窗防护
Alpha rays
Surface contamination detection
Plastic wrap protection
New surface contamination monitor detection window protection
