Tb88 foam brush patrol

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Author:
Ccadena
ID:
271122
Filename:
Tb88 foam brush patrol
Updated:
2014-04-19 16:55:54
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Tb88 foam brush patrol
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Description:
Tb88 foam brush patrol
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  1. Class "A" Foam is a _____, ______ based, _______ surfactant, that enhances the fire suppressant properties of plain water. It is designed for use on Class "A" fires (ordinary combustibles).
    Synthetic, detergent, hydrocarbon
  2. Firefighting effectiveness of water improves
    when class A is added because:
    • -Water penetrates the fuel faster
    • -Increased absorption occurs
    • -Fog nozzle droplets are three times smaller    resulting in increases surface area of water 
    • -Water becomes slippery, reducing friction loss
    • -Water is attracted to carbon
  3. Wetting agents (wet water)are designed to prevent ____
    Foaming
  4. Class "B"Foam, ___ or ____, are specifically formulated for burning
    flammable liquid fires.
    ATC, AFFFAFFF
  5. Recommended foam mixtures range from .l% (l gallon concentrate to 1000 gallons of water) to 1% (1 gallon concentrate to 100
    gallons water)
    .1% 1000 gallons,  1%  100 gallons
  6. Ranges of Expansion Ratios:
    • Low         1:1 to 20:1
    • Medium   20:1 to 200:1
    • High        200:1 to 1000:1
  7. Low expansion ratio have a wide range of application including flame ______, immediate _____ and ______.
    Knockdown, wetting, mop-ups

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