What happens to a fire damper after heat is detected?

A fire damper is a critical component in the fire protection and safety system within a building. Its primary function is to prevent the spread of fire and smoke through ductwork when a fire is detected. When heat is sensed through the damper's fusible link or other heat-activated mechanisms, the damper responds by closing. This action helps isolate different areas of the building, thereby containing the fire and limiting its movement throughout the structure.

The closing process is crucial for maintaining the compartmentalization of fire, which is a key principle in fire safety management. By sealing off openings in ducts, fire dampers limit the amount of air that can feed the fire, reducing the risk of combustion spreading to other parts of the building. This proactive measure is vital for both protecting property and ensuring the safety of occupants within the space.

Understanding this function is essential for anyone involved in building design, fire safety planning, or maintenance, as proper installation and operation of fire dampers are critical components of an effective fire protection system.