How do intumescent fire dampers work?
Our intumescent grilles combine air movement with fire protection. In everyday use, air can pass freely through the grilles to allow good ventilation. In a fire, the intumescent expands, fusing the grille into a solid block that stops fire spreading.
How does fire dampers work?
In general a fire damper works when heat from a fire causes the normal temperature of a room to rise to approximately 165 degrees Fahrenheit i.e. it is designed to close automatically on the detection of heat. The fusible link which is attached to the damper melts causing the dampers’ door to close.
What is intumescent damper?
Intumescent Fire Dampers (IFDs) are designed to seal penetrations provided for movement of air via ducted or naturally ventilated means. Unlike mechanical dampers where the heat from a fire causes a fuseable link to break in the damper, the operation of the IFDs is by heat activation of the intumescent material.
Are fire dampers a legal requirement?
Under the Regulatory Reform (Fire Safety) Order it is a legal requirement to test fire dampers at regular intervals in accordance with fire safety in the design, management and use of buildings code of practice (BS:9999 2017), using a method known as ‘drop testing’.
When should fire dampers be used?
Fire Dampers are used in air transfer openings, ducts and other places where fire rated structures (e.g. walls, floors or other fire barriers) are penetrated.
How much does a fire damper cost?
The average cost of fire damper testing and inspections is between $40-$150 per fire damper.
Where are fire dampers used?
Why are fire dampers required?
Why They’re Necessary The dampers prevent the spread of fire through heating, ventilation, and AC ducts, which helps to stop a fire from spreading throughout the rest of the home. They also help to prevent smoke from traveling through the building’s ductwork in the event of a fire.
Where should fire dampers be placed?
Location: Fire dampers are installed in or near the wall or floor, at the point of duct penetration, to retain the integrity and fire rating of a wall or floor whether it is a ducted or open-ple- num return application.
How often do fire dampers need to be inspected?
every 4 years
NFPA 105(10), Sec. 6.5. 2 requires that each damper be tested and inspected 1 year after installation and that the test and inspection frequency then be every 4 years, except for hospitals, where the frequency is allowed to be every 6 years.
Are fire dampers required in a 1 hour wall?
Q: Are fire dampers required in one-hour fire-rated walls if the facility is fully sprinkled? A: According to NFPA 90A (1999 edition), one-hour fire-rated barriers do not require fire dampers in fully ducted HVAC systems, unless the one-hour fire-rated barrier is a vertical shaft.
What is the difference between fire and smoke dampers?
A fire damper closes once the duct temperature reaches a high enough level to melt a fusible link. A smoke damper closes upon the detection of smoke. It is UL leakage-rated to stop smoke in its tracks, which is a main difference from fire dampers.
How are intumescent fire dampers used in the home?
The LVH-A series of intumescent fire dampers can be designed to be incorporated into the design of the wall or ceiling and simply covered with a reticuling duct or cover grille. Offering greater ease and simplicity during installation and reduced maintenance requirements, the LVH-A is an innovative damper design.
What kind of dampers do boss fire and safety use?
BOSS Fire & Safety offers a full range of industry-best Lorient Intumescent Fire Dampers (IFD). We have an IFD for whatever your application. The LVH-O Series of Circular Fire Dampers is ideal for small extraction applications, such as toilet exhaust in residential apartments and hotels.
How long does a ifbm fire damper last?
Passive fire dampers which expand to block their aperture upon exposure to elevated temperatures. Please note that IFBM dampers have replaced IFB60’s, please download the product PDF for detailed information. Low maintenance fire dampers, rated for up to 120 minutes.
Section 17 of this standard provides guidance on fire damper inspection routines and requires these to be performed on 20% of fire dampers annually, so that all fire dampers within a building have been inspected by the end of the fifth year.