Guidelines for the use of ultraviolet disinfection lamps for schools and kindergartens

by:Tepro     2021-03-09
lamps have a strong bactericidal effect in air disinfection, and are widely used in schools, kindergartens, canteens and other places.   The principle of ultraviolet disinfection lamps: The principle of ultraviolet disinfection is to use the energy of ultraviolet photons to destroy the DNA structure of various viruses, bacteria and other pathogens in the water. The main purpose is to break various structural bonds in DNA or cause photochemical polymerization, such as dimerization of thymine in DNA, so that various viruses, bacteria and other pathogens lose the ability to replicate and reproduce, and achieve the effect of sterilization. The guidelines for the use of ultraviolet disinfection lamps lamps in school and kindergartens are as follows: 1. Strict requirements, standard equipment and installation Schools and kindergartens must strictly implement the relevant regulations for the installation and use of ultraviolet disinfection lamps under the guidance of the health department, and standardize their uv water purifier equipment and installation. Installation requirements: The uv lamp and the light switch must be installed separately and kept a certain distance. It is not allowed to discharge the ultraviolet light switch and the light switch in parallel. The switch should be set more than 2 meters above the ground, and a switch box cover should be added. A striking warning sign should be affixed on the box cover, and the words 'ultraviolet lamp' should not be simply written. 2. Improve the system and implement the responsibility. Schools and kindergartens must establish and improve the use and management system of ultraviolet lamps. Under the guidance of the health department, strengthen the training of health care knowledge for school and kindergarten health doctors, childcare workers and related personnel in the canteen .   1. Strengthen the management of ultraviolet lamps, and require the establishment of a registration book for ultraviolet use, recording the start date of each ultraviolet lamp and the daily disinfection time. The lamp should be cleaned at least once a week.  2. Strengthen the professional training of full-time personnel and strictly operate.  3. Establish a sound system to standardize the disinfection and isolation system of the whole park. For newly installed disinfection uv water purifier equipment, a corresponding standardized operation system and management system must be formulated and implemented in personnel. Third, the use of ultraviolet light    1. Scope of application: used for disinfection of indoor air, surface of objects, water and other liquids. 2. Usage:    (1) Disinfection of indoor air:   a) Indirect irradiation method: High-intensity ultraviolet air disinfection is the first choice, not only has reliable disinfection effect, but also can be used when people are moving indoors. Generally, it can be achieved by turning on the light for 30 minutes. Disinfection is qualified. The distance between the lamp tube and the working ground is less than 2m.  B) Direct irradiation method: Under unmanned conditions indoors, direct irradiation with UV lamps suspended or mobile can be used. When using indoor suspended UV disinfection, the number of indoor UV disinfection lamps (30W UV lamp, intensity at 1.0mu003e 70μW/cm2) is an average of not less than 1.5W per m3, and the irradiation time is not less than 30min.   (2) Disinfection of the surface of the article: It is best to use a portable ultraviolet sterilizer to move and irradiate at a short distance, or to use a suspended ultraviolet lamp. Small items can be irradiated in the ultraviolet disinfection lamps box. Specific requirements: The distance between the lamp tube and the surface of the object should not exceed 1 meter, and the irradiated surface should be used for direct radiation, and should reach a sufficient radiation dose (100000μWs/cm2 when killing bacteria and spores).  3. Note:   a) During use, the surface of the UV lamp should be kept clean. Generally, wipe it with an alcohol cotton ball once a week.  B) When disinfecting indoor air with ultraviolet lamps, the room should be kept clean and dry to reduce dust and water mist.  C) When using ultraviolet rays to disinfect the surface of the article, the irradiated surface should be directly irradiated by ultraviolet rays and a sufficient radiation dose should be achieved.  D) Use ultraviolet direct irradiation for disinfection, and people should not be indoors. Do not irradiate people with ultraviolet light sources to avoid damage.  E) Make use records, measure the radiation intensity once every six months, and keep records.  F) It is safe and effective for kindergartens to use ultraviolet lamps to isolate people for 30 minutes for disinfection. After disinfection, let air circulate for 30 minutes. When performing ultraviolet disinfection in public places, irrelevant personnel should be avoided, especially to prevent the elderly and children from entering the ultraviolet lamp work area by mistake.
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