Firefighting Fundamentals Flashcards

0
Q

What is the secondary duty of the firefighter?

A

Extinguish fires/limit damage

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1
Q

What is the primary duty of the firefighter?

A

To save lives

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2
Q

What does the fire triangle consist of?

A

Heat, fuel and oxygen

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3
Q

What is the fourth element of the fire tetrahedron?

A

Chemical chain reaction

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4
Q

What are the classes of fire?

A

A, B, C, D

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5
Q

What is an alpha fire?

A

Combustible materials that produce ash.

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6
Q

How do you extinguish a class a fire?

A

H20

AFFF

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7
Q

What is a B fire?

A

Flammable liquids

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8
Q

How is a class B fire extinguished?

A

AFFF
Halon 1211
PKP
CO2

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9
Q

What is a class C fire?

A

Electrical fire

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10
Q

How do you extinguish a class C fire?

A

CO2
Halon 1211
PKP
H2O fog

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11
Q

What is a class D fire?

A

Combustible metals such as magnesium and titanium

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12
Q

How are class D fires extinguished?

A

H20 in large quantities

Jettison

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13
Q

What is Halon 1211 and how does it work?

A

Bromochlorodifluormethane.

Inhibits the chemical chain reaction of the combustion process

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14
Q

What percentage of AFFF concentrate is approved for naval use?

A

3 and 6

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15
Q

What is PKP and how does it extinguish fires?

A

Potassium bicarbonate.

Breaks the combustion chain.

16
Q

How does CO2 extinguish fires?

A

Displaces oxygen