Foam Flashcards
1
Q
Made of hydrocarbon surfactants
A
Class A foam
2
Q
Manufactured from either a synthetic or protein base
A
Class B foam
3
Q
Mixed in portions of 1-6%
A
Class B foam
4
Q
Mixed in proportions of 0.1-1%
A
Class A foams
5
Q
Used at a rate of_____to _____% on hydrocarbon fuels.
A
1-3
6
Q
Used at a rate of________to_______% on polar solvents
A
3-6
7
Q
Mixed in proportions of 0.1-1%
A
Class A foams
8
Q
Used at a rate of_____to _____% on hydrocarbon fuels.
A
1-3
9
Q
Used at a rate of________to_______% on polar solvents
A
3-6
10
Q
Most commonly used method of proportioning
A
Premixing
11
Q
Simplest method of mixing foam concentrate and water
A
Batch mixing
12
Q
Uses an external pump or head pressure to force foam concentrate into the fire stream at the correct ratio in comparison to the flow
A
Injection
