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FDNY Books > T.B. Foam > Flashcards

T.B. Foam Flashcards

1
Q

Which foam is extremely useful on fires and spills involving flammable and combustible liquids?

A

Low expansion foams.

They provide extinguishment and vapor control.

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2
Q

Which foams are intended to fight fires of class “A” combustible materials in areas that are inaccessible to F/F’s, such as cellars and ship holds?

A

High expansion foams.

FYI - It is not suitable for use on outdoor flammable liquid fires.

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3
Q

What are the low expansion foams currently in use in the FDNY?

A

a) Fluoroprotein
b) Alcohol Resistant Fluoroprotein (Fluoropolydol)
c) Aqueous Film Forming Foam (AFFF)

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4
Q

Is it permissible to mix foam concentrates?

A

No. They are not compatible and should NEVER be mixed for storage.

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5
Q

Is it permissible to apply two different types of LOW EXPANSION finished firefighting foams simultaneously, e.g., Fluoroprotein and Alcohol (Polydol)?

A

Yes.

FYI - Hi-Ex foam is NOT TO BE USED in conjunction with low expansion foam.

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6
Q

Protein foam is not used by the FDNY and is not effective on……

A

Gasohol or polar solvents.

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7
Q

Foam concentrate is……

A

A mixture of various foaming agents, surfactants and in some cases, anti-freeze compounds, specifically formulated to produce a mass of air filled bubbles which when mixed with water and air in the proper proportions, will float on the surface of a fuel.

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8
Q

Foam solution…….

A

Is the mixture that results when foam concentrate is proportioned at a pre-determined rate with water.

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9
Q

Finished firefighting foam is……..

A

What is applied to the fire or spill and accomplishes the extinguishment.

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10
Q

The four primary methods of extinguishment that finished firefighting foams provide are….

A

1) Smothers
2) Suppresses
3) Separates
4) Cools

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11
Q

The following foams correspond to the color band found on the container:

A

Fluoroprotein - Brown band
Alcohol - Green Band
Hi-expansion - Yellow Band
AFFF - Black Band

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12
Q

How many gallons of foam concentrate will be provided by the first alarm assignment of 3 engines and 2 ladders?

A

65 gallons of foam concentrate.
Each engine carries three 5 gallon cans 3x5=45
Each ladder carries two 5 gallon cans 2x5=20
(13 five gallon cans)
With one handline in operation, it will extinguish approx. 600 SQF.
Lasts approximately 22 minutes

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13
Q

How many foam handlines will be provided by the same first alarm units?

A

Up to three (3) foam hand lines for control.
Every engine company has also been issued a handline foam eductor (1 3/4”), which flows b/t 90 and 120 GPM and an aerating foam nozzle.

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14
Q

Using a handline nozzle, which four small scale incidents/operations can be controlled by the first alarm assignment are specifically mentioned?

A

a) The oil burner w/ fire out of the fire box (pit)
b) The automobile accident w/ fuel spill
* car fire with ruptured gas tank*
c) The car that knocks over a gas pump at a service station
d) A small spill (approx. 600 SQF) or similar situation.

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15
Q

Self educting nozzles are effective at….

A

a) A medium sized flammable/combustible liquid situation such as spill OVER 600 SQF (601, 602, etc.) up to 2,000 SQF,
b) A tanker tuck mishap
c) A loading rack incident or similar situation.

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16
Q

Master stream nozzles are effective at…….

A

a) Oil tank farms
b) Large spills OVER 2,000 SQF or
c) A large capacity tank truck that spilled its product

17
Q

Pre-mixing of AFFF should be limited to?

A

Hand held extinguishers.

18
Q

How many gallons/cans of Fluoroprotein are required to produce a 3% solution?

A

Three 5 gallon cans into a 500 gallon booster tank or four 5 gallon cans are required for a 750 gallon booster tank.
It should only be used when a foam eductor cannot be placed into operation.
The pumper that is being used should not be connected to a hydrant.

19
Q

What is the most common way to produce a foam solution?

A

Through an in-line eductor.

20
Q

What does the foam tender carry?

A

It carries 3,000 gallons of concentrate in three separate 1,000 gallon tank compartments, all of which carry Fluoroprotein Foam.

21
Q

Which type foam is the superior fire extinguishing concentrate for hydrocarbon fuels (gasoline, fuels, oils, etc.) as well as polar solvents (alcohol, ketones, etc.).

A

Fluoropolydol (Alcohol Resistant Fluoroprotein Foam)

22
Q

Fluoropolydol should be used at a ____% rate for hydrocarbons and a ____% rate for polar solvents?

A

3% (h) and 6% (p)

23
Q

What is the shelf life of protein based foam?

A

Approximately 10 years.
Fluoroprotein and
Alcohol Resistant Fluroprotein

24
Q

What is the shelf life of synthetic based foam?

A

Approximately 20 years.

AFFF and Hi-Ex foams.

25
Q

After the conclusion of a foam operation, where is the foam inventory report faxed to?

A

It is faxed to the first responding Foam Coordinator as soon as it is completed.

26
Q

How many gallons and of which foam will be maintained at all foam depots?

A 
Fifty (50) 5 gallon cans of each
Fluoroprotein
Alcohol Resistant Fluoroprotein and
Hi-Ex Foam.
*AFFF is not mentioned.*
Tech Services Division is notified to restock its supply.
27
Q

During scheduled maintenance of foam pumpers and related equipment, what will the ECC supply to the foam eductor?

A

200 PSI.

28
Q

All engine companies that house Foam Carriers will conduct MONTHLY drills with their carrier when?

A

On the first MUD of the month.

29
Q

What is High Expansion foam BEST suited for?

A

Use in confined areas on Class “A” fires.

Particularly INDOOR Class “A” fires in confined spaces.

30
Q

What is High Expansion foam NOT recommended for?

A

On use on flammable liquid incidents.

31
Q

High Expansion foam is primarily used to control?

A

Fires that are inaccessible or difficult to approach due to excessive heat.

32
Q

Under certain conditions, HI-Ex foam has been effective on?

A

a) Liquid Natural Gas fires

b) Suppression or minimizing the release of toxic or flammable vapors with the EXCEPTION OF LPG.

33
Q

What is the expansion ratio of foam to be classified as Hi-Ex foam?

A

An expansion ratio of 200/1 to 1000/1 is necessary to be classified as a Hi-Ex foam.

34
Q

A relatively _____ flow of water is required in Hi-Ex foam operations (___GPM), _____ pump pressure is necessary to overcome the pressure loss at the eductor?

A

a) Small flow
b) 60 GPM.
c) High

35
Q

What is required to be maintained at the inlet of the foam eductor in order to deliver sufficient water under proper pressure to the foam generator?

A

200 to 220 PSI

FDNY Books (45 decks)

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