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The ministry of health has issued regulations on centralized air conditioning and ventilation systems

   In order to prevent the spread of air transmitted disease in public places, protect the public health, issued by the ministry of health in February this year, the central air-conditioning ventilation systems in public places health measures for the administration and the central air-conditioning ventilation systems in public places health standard ", the central air-conditioning ventilation systems in public places of hygiene evaluation specification "and" standard of central air-conditioning ventilation systems in public places clean ", the "method" will be effective as of March 1, 2006.
    At present, more and more urban buildings adopt the fully enclosed centralized air conditioning and ventilation system, which is of positive significance for improving the air environment comfort of public places. However, due to the unreasonable design, installation, operation and management of the centralized air conditioning and ventilation system, the formation and development of air pollutants may be generated and aggravated, resulting in the decline of air quality, especially the spread of respiratory infectious diseases caused by pathogenic microorganisms. Research data show that the air conditioning and ventilation system has become one of the main sources of indoor air pollution in public places due to long-term operation, improper cleaning and other reasons.

   According to the measures, centralized air conditioning and ventilation systems in public places should meet the requirements of hygiene standards and standards. Health management requirements for air duct system, tuyere and machine room; Inspection, cleaning or replacement requirements of cooling tower, filter (net), surface cooler, heater (wet), condensate tray, etc.; Requirements for the construction, reconstruction and expansion of air-conditioning and ventilation systems. In terms of health management, the provisions put forward the formulation and implementation of health management system. Formulation of emergency plans for the prevention of airborne diseases; Conditions requiring cleaning and disinfection; Start the emergency plan in the event of an outbreak of airborne diseases in the region, operate the air-conditioning and ventilation system, and clean and disinfect the main equipment and components; When the central air-conditioning and ventilation system causes or may cause airborne infectious diseases, the air-conditioning and ventilation system shall be shut down, cleaned, disinfected and reactivated.

   Health requirements and inspection methods for central air-conditioning and ventilation systems in public places are mainly stipulated in the health code for central air-conditioning and ventilation systems in public places. Standards for hygienic evaluation of central air-conditioning and ventilation systems in public places stipulates hygienic evaluation of prevention of airborne diseases in newly built, rebuilt, expanded and put into operation central air-conditioning and ventilation systems in public places. The cleaning code for centralized air conditioning and ventilation system in public places stipulates the cleaning method, cleaning process and technical requirements for professional cleaning institutions and special cleaning equipment for the main components of the central air conditioning and ventilation system.

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