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2. Fire damper - Wikipedia

   en.wikipedia.org/wiki/Fire_damper

   Fire/smoke dampers are similar to fire dampers in fire resistance rating, and also prevent the spread of smoke inside the ducts. When a rise in temperature occurs, the fire damper closes, usually activated by a thermal element which melts at temperatures higher than ambient but low enough to indicate the presence of a fire, allowing springs to ...

3. Smoke damper - Wikipedia

   en.wikipedia.org/wiki/Smoke_damper

   As with any other element of a building's passive fire protection system, smoke dampers need to be maintained, inspected and repaired to ensure they are in working order. The National Fire Protection Association (NFPA) requires the testing, maintenance and repair of smoke dampers as mandated in the Life Safety Code. NFPA 105 states [that] each ...

4. Passive fire protection - Wikipedia

   en.wikipedia.org/wiki/Passive_fire_protection

   Passive fire protection systems typically do not require motion. Exceptions are fire dampers (fire-resistive closures within air ducts, excluding grease ducts) and fire door closers, which move, open and shut in order to work, as well as all intumescent products which

5. Fusible link - Wikipedia

   en.wikipedia.org/wiki/Fusible_link

   Mechanical fusible links are utilized as the triggering device in fire sprinkler systems and mechanical automatic door release mechanisms that close fire doors in warehouses, etc. Fire dampers in ventilation systems have fusible links so that the dampers close automatically in case of fire, limiting the spread of flame or hot gases through a ...

6. Fire protection engineering - Wikipedia

   en.wikipedia.org/wiki/Fire_protection_engineering

   Fire protection engineering is the application of science and engineering principles to protect people, property, and their environments from the harmful and destructive effects of fire and smoke. It encompasses engineering which focuses on fire detection , suppression and mitigation and fire safety engineering which focuses on human behavior ...

7. Damper (flow) - Wikipedia

   en.wikipedia.org/wiki/Damper_(flow)

   Removal of electrical power re-opens the damper. This style of damper is advantageous because it is "fail safe"; if the control to the damper fails, the damper opens and allows air to flow. However, in most applications "fail safe" indicates the damper will close upon loss of power thus preventing the spread of smoke and fire to other areas.