Fire Suppression Foam

Low expansion where the bubble expansion ratio is small less than 20 to 1 and the bubble contains a high water content.

Fire suppression foam.

The foam is seen spraying directly on the aircraft and some other equipment. The surfactants used must produce foam in concentration of less than 1. 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. Fire suppression foam is comprised of three parts.

Wormald systems are reliable and suppresses the fire quickly giving you confidence that fire risks are reduced to acceptable levels. Foam systems come in two types as follows. Medium and high expansion where the expansion ratios are greater from 20 to 1 up to 1 000 to 1. Fire suppression system malfunctions in a 787 hangar.

At these expansion ratios the bubble water. Class b fire foam. Foam concentrate water and air. Firefighting foam is a foam used for fire suppression its role is to cool the fire and to coat the fuel preventing its contact with oxygen resulting in suppression of the combustion fire fighting foam was invented by the russian engineer and chemist aleksandr loran in 1902.

However there does not appear to be any people in the videos underneath the foam sprays. Video shows a fire suppression system malfunction that covered two boeing 787s in foam. Other components of fire retardant foams are.