FOAM

Question 1

Combustible Liquid

Answer 1

A liquid with a flash point of 100 degrees F. or higher.

Question 2

Fire Point

Answer 2

The temperature to which a vapor has to be heated to sustain combustion. This temperature is usually no more than three degrees above the flash point.

Question 3

Flammable Liquid

Answer 3

A liquid with a flash point below 100 degrees F. and a vapor pressure of 40 PSIG at 100 degrees F.

Question 4

Hydrocarbons

Answer 4

Compounds that only contain carbon and hydrogen. Examples are methane, ethane, butane and propane. Gasoline, diesel, home heating oil and crude oil are hydrocarbons that contain additives.

Question 5

Polar Solvent

Answer 5

Water-soluble chemicals that readily combine with the water in a foam blanket, thus destroying it. Examples are alcohol, ether, lacquer, thinner and acetone. Alcohol resistant foam needs to be used on these substances.

Question 6

Specific Gravity

Answer 6

A measure of density in liquids relative to water. Refers to whether a substance will float on or sink in water. A liquid with a specific gravity of less than 1.0 floats on water while a liquid with a specific gravity equal to or greater than 1.0 will sink in water.

Question 7

Vapor Density

Answer 7

A measure of density in vapors compared to air. Refers to whether a gas will rise or fall when mixed with air. A vapor density greater than 1.0 will sink while a material with a vapor density less than 1.0 will rise when mixed in air.

Question 8

Foam methods of extinguishment

Answer 8

Smothering, Suppressing, Separates, Cools

Question 9

Fluoroprotein Foam

Answer 9

Brown Band, effective when foam is covered by fuel, slow draining and stable, adheres to metal surfaces, 10 degree F pour point, superior in resisting burn back and reignition. Not effective on polar solvents or pure MTBE

Question 10

Alcohol resistent Fluoroprotein

Answer 10

Green Band. Superior for hydrocarbons and polar solvents, preferred foam for entry, excellent fuel shedding, burn back, water and wind disruption.

Question 11

AFFF

Answer 11

Black band, fast knockdown, poor burn back, rapid draining, not for polar solvents. Limited to FDNY 2/12 gal extinguisher.

Question 12

Foam Carrier Apparatus

Answer 12

1000 gal foam concentrate. Max 2 members to ride incld Chauffeur.

Question 13

Foam Tender

Answer 13

Carries 3000 gal of concentrate. 3 separate tanks.

Question 14

Small spill

Answer 14

600 sq/ft or less

Question 15

Medium spill

Answer 15

over 600 sq/ft

Question 16

Large spill

Answer 16

over 2000 sq/ft