On February 5th, Sichuan Provincial Department of Education issued "Guidelines for School Hygiene and Disinfection". Kindergartens, nurseries, primary and secondary schools, secondary vocational schools, universities, off-campus education and training institutions, etc. Disinfection should be carried out in this way in the whole province, involving individuals, dormitories, canteens and school buses.
Guidelines for School Hygiene, Cleaning and Disinfection in Sichuan Province to Prevent and Control novel coronavirus
This guide is applicable to kindergartens, nurseries, primary and secondary schools, secondary vocational schools, colleges and universities, off-campus education and training institutions, etc.
I. Personal hygiene
(a) faculty, students and children should do a good job in health monitoring.
(2) During the epidemic in novel coronavirus, it is recommended to wear disposable medical masks in indoor meeting rooms, classrooms and other crowded places. If multiple masks are used, Qin Ying will wash them frequently. People with cough symptoms should wear disposable medical surgical masks.
(3) Encourage students and children to take part in outdoor activities and get more sunshine.
(4) After coughing, sneezing, touching public goods, defecating before and after meals, and touching pets, you should use soap or hand sanitizer in time, and wash your hands with running water with the "seven-step washing method". If necessary, you can also rub your hands with a quick hand disinfectant.
(5) The canteen staff should wear work clothes, which should be cleaned daily. If they are polluted by dirt, they should be replaced and cleaned in time, and they should wear masks and hats when touching food.
Second, the environment is clean and hygienic.
(A) the campus environment should be based on cleanliness, supplemented by preventive disinfection.
(2) leaves, water, sewage, dirt, etc. The campus should be cleared in time every day, and the indoor floor should be cleaned at least once a day. Campus public toilets and public garbage bins should be cleaned and disinfected every day, and discarded debris should be emptied in time to avoid the breeding of vectors such as mosquitoes and flies.
(three) classrooms, libraries, activity rooms, dormitories and other indoor places. Ventilation should be provided every day to keep the air circulating. The classroom should open the window and open the door for ventilation during each class break, each time 10-30 minutes.
(four) the teaching and meeting places with poor ventilation conditions should try to reduce the number of people entering and leaving, and adopt exhaust fans for mechanical ventilation. Ultraviolet lamps are used for routine irradiation and disinfection. See the following disinfection methods for specific operations. Disinfection frequency can be adjusted according to actual needs.
(five) during the epidemic, we should strengthen the daily preventive disinfection of classrooms, libraries, activity rooms, indoor gymnasiums, dormitories and other places on campus. (See Articles 3 and 6 of this Guide for specific methods). When fever, cough and other symptoms appear on campus within 0/4 days of/kloc-and there is a history of staying in key areas for epidemic prevention and control, novel coronavirus should contact the local CDC in time for disinfection at any time and terminal disinfection (see Articles 4, 5 and 6 of this guide for specific methods).
Third, daily preventive disinfection.
(A) air disinfection
Ultraviolet lamp irradiation or air disinfection machine disinfection can be used.
1. Ultraviolet lamp irradiation and disinfection: it is turned on in unmanned state, and the irradiation is not less than 1 hour each time, once a day.
2. air disinfection machine disinfection: air disinfection machine such as ultraviolet circulating air and high-voltage electrostatic circulating air can be used, and the operation shall be carried out according to the equipment instruction manual. Advocate open use under human conditions.
(2) Air conditioning filter
Clean and disinfect once a month. The filter screen can be soaked in chlorine-containing disinfectant with effective chlorine concentration of 250 mg/L ~ 500 mg/L for 30 minutes, then rinsed with clear water and dried.
(3) Disinfection of ground and object surface
Available chlorine concentration of 250 mg/L ~ 500 mg/L chlorine disinfectant mop the floor, after 30 minutes with clean water. Lectures, tables and chairs, window sills, corner cabinets, door and window handles, bedrails, telephones, switches, washbasins, toilets, countertops and other high-frequency contact parts can be wiped with 250 mg/L ~ 500 mg/L chlorine-containing disinfectant, and cleaned with clean water after 30 minutes, at least once a day.
(4) Cleaning and disinfection of the kitchen of the collective canteen
After each meal, use detergent and other cleaning agents to clean the surfaces of all kinds of kitchen utensils and tableware, and rinse them with clear water to maintain hygiene. The kitchen floor can be mopped with chlorine-containing disinfectant containing 250 mg/L ~ 500 mg/L of available chlorine. Rinse with clean water after 30 minutes, at least once a day.
(5) Disinfection of tableware in collective canteens
Tableware sterilizer is the first choice for disinfection. Commonly used disinfection cupboards include ultraviolet ozone disinfection cupboards and high-temperature heating disinfection cupboards, which are used according to the operating instructions. It can also be disinfected by high-temperature steam or boiling 15 ~ 30 minutes, or soaked in chlorine-containing disinfectant (the concentration of available chlorine is 250 mg/L ~ 500 mg/L) for 30 minutes, and then rinsed with clear water. Tableware should be cleaned after disinfection.
(6) hand disinfection
Schools should provide adequate hand washing facilities on campus. During the period of novel coronavirus infection, schools should be equipped with enough soap and hand sanitizer to urge students to wash their hands after entering school, before leaving school, before and after eating and defecating, and before and after group activities. Wash your hands with running water and follow the "seven-step washing method". According to the actual situation, it can be equipped with a quick hand disinfectant containing ethanol.
(7) Disinfection of toilets
Chlorine-containing disinfectant with effective chlorine concentration of 250 mg/L ~ 500 mg/L can be used to wipe door handles, faucets, toilet buttons, hand washing countertops, etc. Or put the disinfectant into a sprayer and spray the space and surface until it is wet. After waiting for 30 minutes, open the window for ventilation and rinse with clear water.
(8) Disinfection of school buses
School buses without air conditioning should be ventilated by windows, and school buses with air conditioning should be ventilated by windows after arriving at their destinations; For the surfaces of seats, handrails and rings in school buses, please refer to Article 3 (3) for surface disinfection; The filter screen of the air conditioner in the car is cleaned and disinfected once a week. The filter screen can be soaked in chlorine-containing disinfectant with effective chlorine concentration of 250 mg/L ~ 500 mg/L for 30 minutes, then rinsed with clean water and dried before use. The closed school bus without windows can be disinfected with mobile ultraviolet lamp 1 hour after the personnel are emptied, or sprayed with chlorine-containing disinfectant with effective chlorine concentration of 250 mg/L ~ 500 mg/L, and then the air conditioner is turned on for external circulation ventilation after 30 minutes.
Fourth, disinfect at any time.
When the school finds suspected cases or exposed cases in novel coronavirus, it shall immediately isolate the sick students, and the school shall designate the epidemic reporter to report to the local CDC immediately, determine the close contact personnel under the guidance of the CDC and take corresponding measures; At the same time, the relevant environment is disinfected.
(a) disinfection personnel should do a good job of personal hygiene protection under the guidance of the disease control department, and clean and disinfect their hands in time after disinfection is completed.
(two) according to the guidance of the disease control department to determine the scope of disinfection, disinfection of daily necessities (including stationery, tableware, toiletries, etc.). ), personal belongings, excrement, vomit (including mouth and nose secretions, feces, pus, scabs, etc.). Suspected cases and close contacts are notified at any time. The disinfection method is as follows:
1. The daily necessities and personal belongings of suspected cases and close contacts can be disinfected with chlorine-containing disinfectant with effective chlorine concentration of1000 mg/L. For disinfection objects and methods, please refer to daily disinfection.
2. Disinfection of excreta and vomit of suspected cases: The package can be covered with an emergency vomit bag filled with solid peracetic acid, or covered with a dry towel, and sprayed with chlorine-containing disinfectant 10000mg/l until wet. The mesa and ground polluted by dirt should be disinfected in time, and the disinfectant with the concentration of available chlorine of 2000 mg/L can be used to wipe or mop the floor. The disinfection scope is 2 meters around the vomit, and it should be wiped twice for 30 minutes each time.
(3) Spray available chlorine 1000mg/L ~ 2000mg/L chlorine-containing disinfectant or wipe and disinfect for 2 ~ 3 times on the seats in the class where the suspected case is located.
(four) disinfection personnel in a timely manner to fill in the disinfection record (table) and file for future reference.
Verb (abbreviation for verb) is finally disinfected.
After the suspected cases are sent to the hospital for treatment, the local disease control institutions should disinfect the school environment in time.
Six, commonly used disinfectants and preparation
(1) preparation method of chlorine-containing disinfectant with effective chlorine concentration of 500mg/l;
1.84 disinfectant (marked with available chlorine content of 5%): diluted according to the ratio of disinfectant: water 1: 100;
2. Disinfecting powder (marked with available chlorine content 12%, 20g/ bag): 1 bag of disinfecting powder plus 4.8 liters of water;
3. Chlorine-containing effervescent tablets (marked with effective chlorine content of 500mg/ tablet): dissolve 1 tablet in 1 liter of water.
(2) 75% ethanol disinfectant: directly used.
(three) other disinfectants are prepared and used according to the concentration of the product label to kill intestinal pathogens.
Seven, matters needing attention
(1) Chlorine-containing disinfectants are irritating to skin and mucous membranes, and masks and gloves should be worn when preparing and using them. Do not touch children.
(two) the use of ethanol disinfectant should be far away from the fire source.