Ductwork Fire Dampers

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The benefits of regular DUCTWORK inspection and maintenance is not to be questioned. However not a lot of people aware about the importance. Many people go as far as thinking that inspection and maintenance are a necessity but not an obligation. Here in this article, we will discuss about the importance of this seemingly insignificant issue.

Who would have thought that periodic fire damper inspection are not only necessary, but also required? Yes, the National Fire Protection Agency. Not only the NFPA, the Joint Commission has also rolled out the same requirement. After the installation, all fire dampers must be inspected by the professionals at least within one-year of having it installed.

What Is The Role Of Fire Dampers?

Yes, it does not matter whether you install it for personal use. Every property with this addition must undergo both regular inspection and maintenance. The only exception is found in Hospital to the .nature or its work load of serving so many patients. Fire dampers are utilized in order to maintain the require fire-rated barriers for the floor, walls, and partitions. This is important in the case of DUCTWORK penetration.

When temperature rises, fire damper will automatically close and prevent the flame from spreading through its barriers. Comes in the form of curtain-styled blinds, it typically shuts off automatically the moment it notices melted fusible link. For better understanding about these fusible links, they will typically melt when the temperature touches about 165-degree fahrenheit.

However it’s worth noting that fusible links with higher melt degree may be installed in some circustances. Typically melt when the temperature rises to 212-degree Fahrenheit, these type of fusible links are usually installed in ductworks with higher-than-normal temperature. For example hot decks installed in dual-duct systems. These fire dampers may carry fire resistance hourly rating of 3 hours at the most.

Understanding The Differences

Some people use the terms fire dampers and smoke dampers interchangeably. When in fact they are not one and the same. To clear confusion, it’s important to also understandSmoke dampers are used in transfer air openings and ductwork specifically designed to resist both smoke and air passage. When it’s in operation, smoke dampers work only after smoke detectors relay its signal to initiate closure.

The closure process are generally started by either pneumatic or electric actuator. Utilizing linkage and jackshaft, the actuator will automatically open the smoke dampers’ blades. If you are considering whether or not getting yourself both smoke dampers and fire dampers for your DUCTWORK is necessary, the answer is yes.