What is foam generator?
The foaming generator acts as a medium which transforms the liquid chemical into stable foam. ... The typical foam generator runs from an air compressor and consists of a holding (filler) tank, foaming unit and a lance unit.
What is alcohol resistant foam used for?
Alcohol-resistant foams are used in fighting fires of fuels containing oxygenates, e.g. MTBE, or fires of liquids based on or containing polar solvents.
What is the difference between AFFF and AR-AFFF?
AFFF is suitable for use in a premix state and is suitable for use with dry chemical extinguishing agents. ... When AR-AFFF is used on a polar solvent fuel fire, the polar solvent fuel tries to absorb water from the foam blanket.
Does AFFF foam expire?
Please refer to Chemguard Technical Bulletin regarding foam products and the environment. If kept in the original unopened and airtight Chemguard supplied container and stored within the temperature range of 35ºF - 120ºF (2ºC - 49ºC) a shelf life of between 20-25 years can be expected.
How many types of foam are there?
Polyurethane foam, memory foam and latex foam are the three most common types of foam used in mattresses. While latex foam has seen a bit of a resurgence in recent years, most mattresses only contain memory foam and polyurethane foam.
How do you calculate foam solution?
The formula for calculating the needed foam concentrate at a flammable liquid release is as follows: Area X Critical Application Rate (CAR) X Eduction Rate (ER) X 15 = Foam Concentrate Needed.
What is class A foam made of?
Class A foams consist of a mixture of water, foam concentrate, and air. The composition of the foam depends on the proportion of the three components. The two most common methods for producing class A foam are nozzle-aspirated foam systems and compressed air foam systems (CAFS).
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