Everything You Should Know About Fire Dampers

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Everything You Should Know
About Fire Dampers
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What are fire dampers?
Fire dampers are part of passive fire protection
system. They are fitted in heating, ventilation
and air-conditioning ducts to prevent the spread
of fire. They are usually installed inside the
structure of a building through fire-resistant
walls and floors.
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Inspection
A fire damper needs to be checked and inspected
regularly by a trained individual according to
the guidelines of Fire Safety Codes. A fire
damper maintenance should be carried out at least
once in a month to avid any unwanted
circumstances in a building.
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Importance
The main purpose of a fire damper is to prevent
the spread of fire in a building. It redirects
the fire towards the fire compartment- a room
that is filled with fire-retardant materials.
This helps people to evacuate from the building
giving them more time.
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Working
A fire damper closes automatically when the
temperature reaches beyond the threshold limit.
The damper can be activated mechanically or
manually. Fire dampers without circuits or
sensors rely on fusible link. The link will melt
in case of a fire due to heat, letting the fire
damper to close.
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Types
There are 3types of fire dampers- Dynamic, Static
and Fire/Smoke Dampers. A dynamic fire damper
operates in vertical barriers and have a
spring-loaded mechanism. A static damper operate
in horizontal barriers and have curtain-like
mechanism. Fire/smoke dampers are designed to
limit fire or smoke in a building.
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Material Used
The fittings of fire dampers are always of
galvanized steel. They are used to prevent the
spread of fire in a building through the ducts. A
fire damper maintenance should be done by a
competent person on regular basis. The ducts are
made of steel as steel is a poor conductor of
heat.
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Thank You
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