Development of a new type of detection window protective device for surface contamination monitor
10.3969/j.issn.1672-8270.2024.03.029
- VernacularTitle:新型放射性表面污染监测仪探测窗防护装置的研制
- Author:
Lei ZHU
1
;
Minghao LIU
;
Shanshan GUO
;
Fan BAI
;
Chao YANG
;
Tao YAN
Author Information
1. 火箭军特色医学中心全科医学科 北京 100088
- Keywords:
Alpha rays;
Surface contamination detection;
Plastic wrap protection;
New surface contamination monitor detection window protection
- From:
China Medical Equipment
2024;21(3):144-147,173
- CountryChina
- Language:Chinese
-
Abstract:
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 of α,β and γ rays was more effectively ensured by the new detection window protective device for surface contamination monitor,and the detection efficiency of α rays 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.
