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6 Cards in this Set
- Front
- Back
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When should 6% low expansion foam concentrate mixture be used? |
For fires involving polar solvents (liquids which dissolve in water) |
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List three of the ways in which foam extinguishes a class b fire |
Diluting- Cooling the fuel Isolating fuel from the oxygen Forming- a sealing blanket Intercepting radiant heat from flames |
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How foam extinguishes a fire |
Dilution, isolation, cooling, forming, intercepting |
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Low expansion- 3 % concentration used for? |
Fires involving hydrocarbons |
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Classification of foam |
Low expansion- 2:1 to 20:1 High expansion- 200:1 to 2000:1 |
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Methods of application |
Gentle application Rain down Rolling on Off wall- indirect application |
