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EAWS > Phase 1: Block 6 - Firefighting Fundamentals > Flashcards

Phase 1: Block 6 - Firefighting Fundamentals Flashcards

0
Q

What is the primary duty of a firefighter?

A

Saving lives

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1
Q

What is the secondary duty of a firefighter?

A

Extinguish fires and limit damage to aircraft, shipboard, airfield installed equipment and/ or airfield structures.

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2
Q

What is the fire tetrahedron?

A

A simple model that illustrates the key components needed to create fire.

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3
Q

What are the four components of the fire tetrahedron?

A

Oxygen, fuel, heat, and a chemical chain reaction (uninterrupted).

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4
Q

What are the four classes of fires?

A

Alpha, bravo, Charlie and delta fires.

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5
Q

What is a class alpha fire?

A

A fire that occurred in combustible materials that produce ash. Ex: Wood/wood products, cloth, textiles, fibrous materials and paper products.

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6
Q

What extinguishing agents are effective against class alpha fires?

A

Water (H2O) or Aqueous Film Forming Foam (AFFF).

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7
Q

What is a class bravo fire?

A

A fire that occurred in with flammable liquid substances. Ex: Gasoline, jet fuels, oil and other petroleum based products.

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8
Q

What extinguishing agents are effective against class bravo fires?

A

AFFF, Halon 1211, Purple K Powder (PKP) and Carbon Dioxide (CO2).

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9
Q

What is a class Charlie fire?

A

A fire that results from an energized electrical source.

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10
Q

What are the two types of class Charlie fires?

A

Energized and de-energized

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11
Q

What extinguishing agents are effective against energized class charlie fires?

A

CO2, Halon, PKP, and H2O in fog patterns at a minimum distance of four feet.

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12
Q

How should a de-energized class charlie fire be treated?

A

As a class alpha, bravo, or delta fire.

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13
Q

What is a class delta fire?

A

A fire that occurs in combustible metals.

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14
Q

What extinguishing agents are effective against class delta fires?

A

Large quantities of H2O in a high velocity fog pattern.

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15
Q

Why is it important to fight class delta fires from a safe distance or from behind shelter?

A

Small explosions may occur.

16
Q

What does the extinguishing agent Aqueous film forming foam (AFFF) primarily consist of?

A

Synthetic fluorocarbon surfactant material.

17
Q

Is Aqueous film forming foam (AFFF) corrosive?

A

No

18
Q

How long is the shelf life of aqueous film forming foam (AFFF) if stored in a protected area?

A

Unlimited

19
Q

What two percentages of aqueous film forming foam (AFFF) are approved for naval use?

A

Three and six percent

20
Q

Current shipboard equipment requires what percentage of aqueous film forming foam (AFFF)?

A

Six percent

21
Q

Water (H2O) is not generally considered suitable for A/C fires involving large amounts of what?

A

Fuel

22
Q

When properly applied in an A/C firefighting situation, what does water (H2O) have the ability to do?

A

Cool the A/C fuselage and provide a heat shield for personnel.

23
Q

Water (H2O) is an effective agent for cooling what?

A

Ordnance and batteries

24
Q

What class of fire is water (H2O) effective on?

A

Class alpha

25
Q

What is the chemical name for Halon 1211?

A

Bromochlorodifluoromethane

26
Q

Halon 1211 is intended for use on what classes of fire?

A

Class brave and charlie

27
Q

While not intended for, what class of fire is Halon 1211 effective on?

A

Class alpha

28
Q

How does Halon 1211 extinguish fires?

A

By inhibiting the chemical chain reaction of the combustion process.

29
Q

What 2 types of units does Carbon Dioxide (CO2) come in?

A

15 pound portable units and 50 pound wheeled units.

30
Q

What classes of fire is Carbon Dioxide (CO2) intended for use on?

A

Class bravo and charlie

31
Q

How does Carbon Dioxide suppress fire?

A

By displacing oxygen to a point below the level to support combustion.

32
Q

What class of fire is Potassium Bicarbonate (PKP) intended for use on?

A

Class bravo

33
Q

How does Potassium Bicarbonate (PKP) extinguish fire?

A

By breaking the combustion chain.

34
Q

Potassium Bicarbonate (PKP) does not have what capability?

A

Cooling

35
Q

If ignition sources are present, Potassium Bicarbonate (PKP) will not prevent what?

A

Reflash

EAWS (11 decks)

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