4

Question 1

maintains that “to extinguish a fire, interrupt or eliminate the supply of any or all of the elements of fire.”

Answer 1

Fire Extinguishment Theory

Question 2

By comprehensively understanding and applying the principles of the____________, firefighters, emergency personnel, and individuals can effectively combat and suppress fires, thereby minimizing the potential risks and damages associated with these destructive events.

Answer 2

Fire Extinguishment Theory

Question 3

4 GENERAL METHODS OF FIRE EXTINGUISHMENT

Answer 3

1. Extinguishment by Temperature Reduction
2. Extinguishment by Fuel Removal
3. Extinguishment by Oxygen Dilution
4. Extinguishment by Chemical Inhibition

Question 4

Fire can be extinguished by cooling the temperature of the fire environment, which isusually done by using water.

Answer 4

Extinguishment by Temperature Reduction

Question 5

This eliminates the element of heat, which causes the fire triangle to fall apart.

Answer 5

Extinguishment by Temperature Reduction

Question 6

The aim is to lower the temperature of the fuel to a point where it doesn’t produce sufficient vapors to burn.

Answer 6

Extinguishment by Temperature Reduction

Question 7

Fire could also be put out by removing the source or supply of fuel.

Answer 7

Extinguishment by Fuel Removal

Question 8

This can be done by stopping the flow of liquid fuel, preventing the production of flammable gas, removing the solid fuel at the fire path, or allowing the fire to burn until the fuel is consumed.

Answer 8

Extinguishment by Fuel Removal

Question 9

Another way to snuff out a fire is by reducing the concentration of oxygen at the burning area, which can be done by introducing inert gases or by separating oxygen from the fuel.

Answer 9

Extinguishment by Oxygen Dilution

Question 10

Some extinguishing agents, like dry chemicals and halon, can interrupt the production of flames and will result in the rapid extinguishment of a fire.

Answer 10

Extinguishment by Chemical Inhibition

Question 11

This method is effective only on burning gas and liquid fuels as they cannot burn in the smoldering mode of combustion.

Answer 11

Extinguishment by Chemical Inhibition

Question 12

Ordinary fires can be extinguished by_______ and _____, which removes the heat element of fire.

Answer 12

quenching and cooling

Question 13

is the best agent in cooling the burning solid materials because it has a quenching effect that can reduce the temperature of a burning material below its ignition temperature.

Answer 13

Water

Question 14

Some fire extinguishers that have water, sand, acid, foam, and special solutions containing alkali methyl dust, as found in the loaded stream extinguisher, should be used for this type of fire.

Answer 14

CLASS A FIRES

Question 15

Fires from flammable liquids and gases can be put out by_____ or _____, also known as ______.

Answer 15

smothering or blanketing

oxygen exclusion

Question 16

, which removes the fire’s access to oxygen

Answer 16

oxygen exclusion

Question 17

can be controlled by foam, loaded stream, carbon dioxide, dry chemicals, and vaporizing liquid.

Answer 17

Class B fires

Question 18

can be controlled by non-conducting extinguishing agents, which safely de- energize the electrical circuit.

Answer 18

Electrical fires

Question 19

Extinguishers that should be used to put out Class C fires are ____

Answer 19

carbon dioxide extinguishers, dry chemicals, or vaporizing liquids.

Question 20

Fires of combustible metals can only be put out by using ____

Answer 20

special extinguishing agents marked specifically for metals.

Question 21

are explicitly designed for controlling Class D fires.

Answer 21

GE type, Met-L-X, Lith-X, Met-L-KYL, dry sand, and dry talc

Question 22

fire extinguishers with _____ are used to suffocate the fire while simultaneously cooling the fuel.

Answer 22

foam-like cooling agents