hätäpoistoventilaatio

Hätäpoistoventilaatio, often referred to as smoke extraction or emergency ventilation, is a crucial building safety system designed to remove smoke and hot gases from a building during a fire. Its primary purpose is to maintain escape routes, such as stairwells and corridors, in a condition where people can safely evacuate. By preventing the accumulation of toxic smoke, it significantly reduces the risk of incapacitation and death from smoke inhalation.

The system typically comprises a network of ducts, vents, and fans. In the event of a fire alarm, these components are activated to create a flow of air that directs smoke towards designated extraction points. This can involve opening vents or activating powerful exhaust fans to expel smoke and hot gases to the outside. In some cases, the system may also be designed to supply fresh air to certain areas, such as fire-resistant stairwells, to maintain breathable air for occupants and firefighters.

Effective hätäpoistoventilaatio systems are designed and installed according to strict building codes and regulations. Regular maintenance and testing are essential to ensure the system functions correctly when needed. The installation and operation of these systems are critical for enhancing the overall fire safety of a building, protecting lives, and minimizing property damage. It is a passive or active safety measure that complements other fire protection strategies like fire alarms and sprinkler systems.