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FAQ on the standard of protection schools

The technical rule for workplaces (ASR) A3.5 "Room temperatures" in table 1 contains guide values ​​for a room temperature that is beneficial to health. The air temperature in work rooms should be +20 degrees C for light, sedentary work. A downward deviation is possible if additional measures are taken, see Section 4.2 (2) of this ASR. Specifications in the ASR are not mandatory values, but the responsible entrepreneur can assume that the mandatory requirement for a healthy room temperature from the workplace ordinance will be met if these requirements are met.

It is technically hardly possible to keep a room at a constant room temperature of +20 degrees C even during ventilation breaks when the outside temperature is low. If the intermittent ventilation is carried out correctly, the temperature in the room only drops briefly by 2-3 degrees Celsius; this is quickly compensated for by the heat stored in the walls, ceilings and floors. It is therefore possible to use the measures mentioned in Section 4.2 (2) to compensate for a brief fall below the room temperature. This includes, inter alia. wearing suitable warming clothing during the ventilation breaks, which is already there because the students wear them on their way to school.

The handout from the Federal Environment Agency describes adequate and professional ventilation in schools. In the cold season it is neither necessary nor advisable to keep the windows open during lessons, even if only in the tilted position. In addition, heating systems should always be designed for slightly higher temperatures, since when the work is mainly seated, slightly higher air temperatures are required than those specified in Table 1 of ASR A3.5.

Based on the facts mentioned, the material cost bearer must weigh up in the context of his risk assessment for the outer school area whether a deviation from the ventilation requirement of the SARS-CoV-2 occupational health and safety rule or a short-term fall below the room temperature during ventilation represents the higher risk for the health of the students . The unanimous opinion of the experts is that adequate ventilation is the best way to minimize the concentration of virus-contaminated aerosols in work and classrooms and thus prevent the transmission of COVID-19. There are currently no known health hazards caused by briefly falling below the room temperature during the necessary ventilation breaks.

Therefore, from the point of view of the statutory accident insurance, a brief undershooting of the room temperature during ventilation breaks and the associated feeling of discomfort on the part of the room users must be tolerated.