How do foam sprinklers work?
Foam Water Fire Sprinkler Systems work when water and foam concentrate mix. This mixture then flows through the pipe to extinguish the fire. Once the bladder tank is pressurized the foam travels from the bladder tank into a Foam Proportioner. From here the foam is released into the piping to be combined with the water.
How does foam deluge system work?
The foam systems are connected to a water supply through a valve that is opened by the operation of a smoke or heat detection system. The foam is injected in the pipe, after the fire-pump, from a foam bladder tank to allow it to be mixed with the water.
How does a foam suppression system work?
Foam systems mainly interfere with oxygen. First, it develops a foam blanket over the flammable fuels, separating the fuels from the oxygen, thus excluding oxygen by smothering. Then the waters of the solution absorb heats and cool the fuels as well as substance surfaces very fast by cooling effect.
What are the differences between foam water sprinkler systems and foam water spray systems?
NFPA 16 Standard for Installation of Foam-Water Sprinkler and Foam-Water Spray Systems is most commonly used for designing these systems. Foam-Sprinkler systems are used in control and extinguishment of fires by foam, wherein foam is preferred extinguishing agent.
What is foam system made by?
7 Premix foam system. General Premix foam system is mixture of 6–10% of preferably film forming fluoro protein (AFFF), aqueous film forming foam (FFFP), or alcohol resistance foam liquid mixed with water and used as quick initial fire fighting means for class B fires.
What type of sprinkler head is used in the deluge system?
open sprinkler heads
A deluge fire protection system has unpressurized dry piping and open sprinkler heads. The system is directly connected to a water supply and when the system is activated, a deluge valve will release the water to all the open sprinkler heads.
What is AFFF made of?
Synthetic foams Aqueous film forming foams (AFFF) are water-based and frequently contain hydrocarbon-based surfactant such as sodium alkyl sulfate, and fluorosurfactant, such as fluorotelomers, perfluorooctanoic acid (PFOA), or perfluorooctanesulfonic acid (PFOS).
What is FM200 system?
FM200 is a synthetic/chemical fire suppression gas and extinguishes a fire by removing the free radicals or heat elements from the fire triangle. (Oxygen, Heat and Fuel). The typical concentration of an FM200 system is normally between 7.9% to 8.5%.