Our growing information page on Fire Protection Systems by;   

Fire Alarm System  -  The most basic fire alarm system is a simple electric circuit built into an entry way. The primary function of a Fire Detection and Alarm system is for notification and evacuation of personnel.
  Restaurant Cooking Equipment   A building or local fire alarm system provides audible and/or visible alarm signals as the result of the manual operation of a fire alarm pull-station, the automatic operation of a fire detector, such as a smoke or heat detector, or the automatic operation of protective equipment, such as a sprinkler system. Various factors such as local codes, building size, and occupancy class will affect the requirements for these systems.
 
 

How Foam Systems Work

Fire fighting foam systems suppress fire by separating the fuel from the air (oxygen). Depending on the type of foam system, this is done in several ways:

  • Foam blankets the fuel surface smothering the fire
  • The fuel is cooled by the water content of the foam
  • The foam blanket suppresses the release of flammable vapors that can mix with the air.

 

Aqueous Film-Forming Foams  are based on combinations of fluoro-chemical surfactants, hydrocarbon surfactants, and solvents. These agent require a very low energy input to produce a high quality fire fighting foam. Consequently, they can be applied through a wide variety of foam delivery systems. This is the choice for airports, refineries, manufacturing plants, municipal fire departments, and any other operation involving the transportation, processing, or handling of flammable liquids.

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Mixing Foam Systems with Water

A foam system requires proportioning equipment to mix the foam with water in the required concentration. Automatic pressure balancing valves regulate the foam concentrate pressure to match the water pressure.

Foam System Bladder Tanks

Foam concentrate is often stored in a bladder tank system. A bladder tank containing a nylon reinforced elastomric bladder is used to store the foam concentrate. System water pressure is used to squeeze the bladder providing fire fighting foam concentrate, at the same pressure, to the proportioner. With bladder tank foam systems, no external power is required, and little maintenance is needed.