Train disinfection and ventilation authority answer

Recently, the head of relevant departments of China National Railway Group Co., Ltd. accepted an interview on the ventilation and disinfection of passenger trains of public concern. At present, the passenger trains in China's railway operation are mainly divided into three types: EMU train, normal speed air-conditioned train and normal speed non air-conditioned train. EMU trains mainly adopt the ventilation mode of top air supply and bottom air exhaust, while a few adopt the mode of top and side air supply at the same time and bottom air exhaust. Air supply at the top and return at the end are adopted for normal speed air conditioning train. All EMUs and ordinary speed air conditioning trains can continuously supply fresh air in real time, and the technical parameters such as air cleanliness, fresh air volume, air dust concentration, temperature uniformity, temperature and humidity meet the requirements of national standards. The normal speed non air-conditioned train mainly adopts natural ventilation mode. In order to prevent and control the epidemic, the railway department took effective measures to further strengthen the ventilation and disinfection of passenger trains. One is to optimize the ventilation of EMU trains. For a few EMU trains with simultaneous top and side air supply, the control of air conditioning air supply system was optimized to improve the ratio of top air supply and effectively prevent air cross convection circulation. For all EMU trains, the fresh air supply is increased to the maximum extent, and the fresh air supply of different models is increased by 17% to 33%. Each compartment of EMU train can complete fresh air exchange every 5 to 10 minutes. Second, strengthen the cleaning and disinfection of filter screen of air conditioning train. The frequency of cleaning and disinfection of air conditioning filter screen of EMU train and general air conditioning train shall be increased to ensure good operation of ventilation system. Third, ensure good ventilation of non air-conditioned trains. On the premise of ensuring safety, for non air-conditioned trains, measures such as frequent opening of windows, timely ventilation and air exchange shall be taken to maintain the air circulation in the compartment. At the same time of strengthening the train ventilation, the railway department has further increased the preventive disinfection, emergency disinfection, final disinfection and the whole process sanitation of all kinds of passenger trains, increased the frequency of disinfection for key parts such as the door handle of the toilet, the faucet of the hand washing table, the place where the waste box is put, kept the train clean and sanitary, and tried to block the transmission path of the epidemic. Please adhere to civilized travel, do a good job in personal protection and public health maintenance, and jointly create a clean and sanitary riding environment to contribute to the prevention and control of the epidemic.