What is the UvA doing to prevent the spread of the coronavirus in our buildings via virus particles in the air (aerosols)?
We want everyone to be able to work and study safely in the UVA buildings. By paying extra attention to the ventilation in our buildings, we can prevent virus particles from spreading in the air.
How the ventilation works differs from building to building and from room to room. The age of the building plays a role, as does the way in which the indoor air circulates.
We have assessed all the office and teaching locations, following the ventilation guidelines of the National Institute for Public Health and the Environment (RIVM). At the door of the room, you will find information on how to use the room.
Ventilation is the constant renewal of the air (24 hours a day). The outside air always replaces part or all of the inside air that is polluted by moisture, gases and possible pathogens. Ventilation can take place in two ways:
Good ventilation ensures that aerosols (particles that may contain the coronavirus) are removed to a sufficient extent.
In the case of the recirculation of indoor air, the air moves through a room or building without fresh air coming in from the outside. The RIVM distinguishes between two forms of recirculation:
1. from room to room – the air travels a relatively long distance through the building
In the UVA buildings, the central recirculation of the air-treatment system at building level is switched on. Research has shown that this does not pose a risk.
2. from person to person – the air travels a relatively short distance within a room
The UVA has buildings with this type of recirculation at room level.
We monitor whether we can achieve the minimum ventilation specified by the RIVM for all rooms. The ventilation is therefore in order.
Sometimes the climate in a room might not feel pleasant, but ventilation and climate are different things. Ventilation involves the supply of fresh air and the removal of dirty air. In order to prevent air flows from circulating, we sometimes switch off the recirculation of the cooling in a room. As a result, the indoor climate deteriorates: it gets warm in the room and may feel stuffy. However, this does not mean that the ventilation is not in order.
It doesn't matter if you're in a large or small room. What counts is the number of people in the room relative to the ventilation. We have checked this in all the rooms.
As long as the number of people does not exceed the maximum number specified for the room in question, you can work there safely.
If you are vulnerable, it is a good idea to maintain a distance of 1.5 metres from other people. Ventilation does not have much influence on the particles in the air within 1.5 metres of someone; they can therefore cause exposure and transfer. In addition to keeping your distance, you can also wear a face mask.