# Foam Book 3

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1. pg81

Portable around the pump proportioners can turn any pumper into a foam truck.

What are the solution flows they offer?
50-4500gpm @ 1% ratio

50-1500gpm @ 3% ratio

750gpm @ 6% ratio
2. pg82

Installed in-line eductors are most commonly used to proportion what kind of foam concentrates?
Class B Foam
3. pg82

What is the most common type of built in proportioner installed in mobile fire apparatus today?
Around the pump proportioner
4. pg83

On an around the pump proportioner- when the valve is open what is the small amount of water directed through the bypass piping after being discharged from the pump?
10-40gpm
5. pg83

Around the pump proportioners are available in what flow ranges?
As little as 60gpm to as high as 2,000gpm
6. pg83

On an around the pump proportioner if inlet water supply is greater than _____, the foam concentrate will not enter the pump intake.

Versions are capable of handling intake pressure up to?
Inlet water supply > 10psi

versions are capable of handling intake pressures up to 40psi
7. Pg5

What is the normal oxygen content of air?

Nitrogen?

Other?
21% air

78% nitrogen

Other trace elements 1%
8. Pg9

What is a BTU?
The amount of heat needed to raise the temp of 1lb of water 1° F
9. pg9

What is a Calorie?
The amount of heat needed to raise the time of 1gram of water 1°C
10. pg9

1 calorie = how many Joules?

1BTU = how many Joules?
4.19J

1055J or 1.055J
11. pg16

What temp does a combustible liquid release flammable vapors?

What about a flammable liquid?
>100°F (combustible)

<100°F (flammable)
12. pg17

At what oxygen concentration does the intensity of a fire begin to decrease?

What concentration doesn't support combustion?
<18% fire begins to decrease

<15% O2 doesn't support combustion
13. pg19

At what temp does a Flashover occur?

What is the Ignition temp of CO?
900°-1,200°  for flashover

CO ignition - 1,128°
14. pg21

Heat release is measured in what?
• BTU per second
•       or
• Kilowatts
15. pg26

What is responsible for the spread of fire?
Heat
16. pg91

What types of foam concentrate are used with Air-aspirating foam nozzles?
Protein

Flouroprotein

may also be used with Class A foams
17. pg92

What is the flow rate of a Manual Flow Monitor?
200gpm - 2,000gpm
18. pg92

What is the flow rate of an Auto-Oscillating Foam Monitor?
Flows up to 2,000gpm
19. pg92

What is the flow rate of a Remote Control Foam Monitor?
Flows up to 3,000gpm
20. pg95

Most structural and wildland fire attacks using CAFS are done with an airflow rate of?
.5 to 1cfm
21. pg95

In a CAFS very dry finished foam at flows up to 100gpm is accomplished with  how much air flow?
2cfm
 Author: FFBRASS ID: 277498 Card Set: Foam Book 3 Updated: 2014-06-24 18:16:10 Tags: JFRD Folders: Description: 6/25 Show Answers: