Foam Type Fire Suppression System

Method of operation for foam water spray systems.

Foam type fire suppression system.

For example in 2014 a civilian worker at eglin air force base died after being trapped in a foam filled hangar during an inadvertent system discharge. The surfactants used must produce foam in concentration of less than 1. Other components of fire retardant foams are. One example is the ansul foam fire suppression system.

Foam concentrate water and air. At these expansion ratios the bubble water. A combination of an automatic sprinkler system and a low level high expansion foam system. The main fire fighting agents in foam systems are known as aqueous film forming foams afff and if you choose the ansul system you have a variety of other foam agents to choose from.

Foam water spray systems can be used for a combination of class a and class b hazards. Foam systems come in two types as follows. They are mostly applicable to the protection of two dimensional flammable liquid hazards. Medium and high expansion where the expansion ratios are greater from 20 to 1 up to 1 000 to 1.

The application technique and performance factors are the same for both the 3 and the 3 6 types of ar afff concentrates. Supplementary protection systems are designed to cover the. If fire protection option 1 is used a foam water deluge system in hangars housing aircraft with a wingspan area of greater than 3 000 square feet supplemental protection is also required. When mixed correctly these parts form a homogeneous foam blanket that extinguishes flames by the combined mechanisms of cooling separating the flame source from the product surface suppressing vapors and smothering.

Foam fire suppression comes in a variety of systems. Low expansion where the bubble expansion ratio is small less than 20 to 1 and the bubble contains a high water content. Every facility has different needs when it comes to fire suppression. Foam water systems generally work by allowing foam concentrate to mix with water flowing into the piping system.

The intensity of the fire distance the foam must be thrown and the application rate also play an important part in determining the type of nozzle and method of extinguishment. When a hangar foam fire suppression system inadvertently discharges the results can be damaging or even deadly.