Fire Behavior Flashcards

0
Q

What four ingredients make up the fire tetrahedron?

A

Heat
Fuel
Oxygen
Chemical Reactions

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1
Q

What three ingredients make up the fire triangle?

A

Heat
Fuel
Oxygen

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2
Q

What are four sources of heat?

A

Chemical
Electrical
Mechanical
Nuclear

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3
Q

What are the four stages of fire burn?

A

Ignition
Growth
Fully developed
Decay

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4
Q

What are four factors that determine the speed of growth and size of a fire?

A

Oxygen supply
Fuel
Container size
Insulation

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5
Q

What stage of fire do flashovers occur at?

A

Fully developed stage

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6
Q

How many classes of fire are there?

A

Five

A,B,C,D,K

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7
Q

What is a class A fire?

A

Made up of ordinary combustibles.

Paper, wood, rubber, plastic, organic solids

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8
Q

What is a class B fire?

A

Fueled by liquids, gases, or grease type fuels.

Oil, gasoline, alcohol, other liquids

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9
Q

What are class C fires?

A

Usually class A+B fires fueled by electricity.

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10
Q

What are class D fires?

A

Fueled by metals

mostly metals that end in -ium

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11
Q

What are class K fires?

A

Combustible cooking fuels.

Vegetable/animal oils and fats

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12
Q

How do you extinguish class A fires?

A

Cool the fire down (use water)

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13
Q

How do you extinguish class B fires?

A

Cut off oxygen. (Use smothering agent/foam)

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14
Q

How do you extinguish class C fires?

A

Remove the fuel (electricity). Then it becomes a class A or B fire.

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15
Q

How do you extinguish class D fires?

A

Break up the chemical reaction (depends on the metal on fire)

16
Q

What are four attributes to look for when looking at smoke?

A

Volume
Velocity
Density
Color

17
Q

What does smoke look like on dampened materials typically?

A

Lighter color

18
Q

What color smoke appears when a material is first heated?

19
Q

Natural materials turn to what color as it dries out?

A

Turn from tan to brown

20
Q

Plastics and painted surfaces will turn to what color as it dries out?

21
Q

Black turbulent smoke is a sign of what?

22
Q

A hot, clean burning fire will emit how much smoke and how is the temperature?

A

Very little but hot

23
Q

A fast moving fire in a poorly ventilated area will show how much smoke?

A

A tremendous volume of smoke.

24
Low mass fuels and plastics emit how much smoke and how is the temperature?
Large volumes of smoke with little heat
25
What is it called when a solid turns into a gas?
Pyrolysis
26
At what temperature does water turn into steam?
212 degrees