Monitoring of irradiation intensity of ultraviolet lamp and analysis of usage,maintenance and management strategy
Objective To figure out the qualification of ultraviolet lamp irradiation intensity in one disease control and prevention center from 2018 to 2023,so as to provide reference for disinfection quality control of ultraviolet-C devices.Methods According to the determination method of ultraviolet radiation meter in GB 15982-2012 Hygienic Standard for Disinfection in hospitals,the ultraviolet-C devices irradiation intensity in key departments such as biosafety laboratory and outpatient department was detected.The intensity of the ultraviolet lamps with the power greater than or equal to 30 W should greater than or equal to 70 μW/cm2 on using.The intensity of new ultraviolet lamp should be greater than or equal to 90μW/cm2.Results From 2018 to 2023,a total of 3 065 ultraviolet-C devices were monitored,and 2 623 were qualified,with the qualified rate of 85.58％.There was statistical difference(P＜0.001)in the qualified rates of irradiation intensity in different years(x2=83.771,P＜0.001).The qualified rates of ultraviolet radiation intensity in biosafety laboratory and the outpatient department were 85.92％and 83.56％,respectively,and the qualified rates of ultraviolet lamps showed increasing trend(trend x2=48.260,P＜0.001)year by year.Conclusions The irradiation intensity of ultraviolet lamps is generally good in this center for disease control and prevention.But the daily maintenance is lacking.The usage,maintenance and management should be strengthened and regularly monitored to insure the effective disinfection of the ultraviolet lamps.
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