According to the People's Republic of China **** and the national health industry standard "disinfection technical specifications for medical institutions" WS/T 367-2012, the UV lamp radiation sterilization intensity value is lower than 70μW/cm2 need to be replaced.
"Technical specifications for disinfection of medical institutions" WS/T 367-2012 provides:
C.6.2.1? UV disinfection lamps in the voltage of 220V, relative humidity of 60%, the temperature of 20 ℃, the radiation of 253.7nm ultraviolet intensity (intensity in use) should not be less than 70μW/cm2.
C.6. 2.2 The radiation intensity of the sterilizing ultraviolet light shall be monitored periodically and replaced when the irradiation intensity is low enough to fall below the required value.
C.6.2.3 The service life of the ultraviolet disinfection lamp, i.e., the time from the intensity of the new lamp reduced to 70μW/ cm2 (power ≥ 30W), or reduced to the original intensity of the new lamp 70% of the time (power <30W), should not be less than 1,000h. ultraviolet lamp production units should provide the actual service life.
Extended information:
Ultraviolet lamps utilize ultraviolet light. p>Ultraviolet lamps use ultraviolet light for light sterilization, and its intensity should not be less than 70μW/c m2. The suitable sterilization temperature is 15℃-40~C, and the relative humidity is 50%~60%. But its role is limited to the shallow surface of the object, only in the ultraviolet light 'radiation to the place and space to have a role. And, ultraviolet light on the human eye and skin have a certain stimulating effect.
Hospital air sterilization, the general use of ultraviolet sterilization lamps, the principle of ignition and ordinary lighting lamps similar to the eyes. There are strong sterilization effect, easy to use, simple, portable, low cost, easy to popularize and other advantages. Its luminous principle is in the vacuum treatment of quartz glass tube filled with mercury vapor, the lamp is placed on both ends of the filament.
Through the ballast to the two ends of the filament to the voltage, excitation of mercury gas arc discharge and produce ultraviolet light. The ultraviolet wavelength of the medical sterilization UV lamp is 254nm.
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