FIRE DETECTION

Question 1

-is the process of combustion.
-is an active principle of burning characterized by heat and light of combustion.
-is a chemical reaction that takes place between fuel, heat and oxygen in form of light and noticeable heat.

Answer 1

Fire

Question 2

sources include anything capable of generating heat.
Example: lightning, cigarettes, powerlines, matches, and sunlight hitting a magnifying glass.

Answer 2

Heat

Question 3

It is anything that can burn and contains the chemical potential energy released during combustion. Initially, the fuel may be form of a solid, liquid, or gas at the ambient temperature.

Answer 3

Fuel

Question 4

Air contains 21 percent oxygen, and most fires require at least 16 percent oxygen content to burn.

Answer 4

Oxygen

Question 5

Method of heat transfer which Heat is transferred directly between adjacent particles.

Answer 5

Conduction

Question 6

Heat is transferred by the movement of molecules within fluids.

Answer 6

Convection

Question 7

THROUGH THE ACTION OF HEAT RISING WITHIN A STRUCTURE, BRINGING ALSO POISONOUS GASES AND SMOKE. THIS IS CONSIDERED AS THE MOST LIFE-THREATENING AND THE FASTEST WAY FIRE TRAVELS.

Answer 7

Convection

Question 8

Heat is transferred through space by electromagnetic waves.

Answer 8

Radiation

Question 9

Wood, paper, cloth, trash & other ordinary materials.

Answer 9

Class A

Question 10

Gasoline, oil, paint and other flammable liquids.

Answer 10

Class B

Question 11

May be used on fires involving live electrical equipment without danger to the operator.

Answer 11

Class C

Question 12

Combustible metals and combustible metal alloys.

Answer 12

Class D

Question 13

Cooking media (Vegetable or Animal Oils and Fats)

Answer 13

Class K

Question 14

cooling or removing element of heat. Reducing the temperature.

Answer 14

Quenching

Question 15

removing oxygen or oxidizing agent on fire.

Answer 15

Smothering

Question 16

removing or reducing fuel.

Answer 16

Starving

Question 17

stopping chain reaction.

Answer 17

Inhibiting

Question 18

4 Elements of fire come together and combustion occur.
Mushrooming
-hot gases begin to spread horizontally across the ceiling.

Answer 18

Incipient stage

Question 19

-hot gases begin to spread horizontally across the ceiling.

Answer 19

Mushrooming

Question 20

fuel and oxygen are virtually unlimited.
- - rapidly increasing of heat.

Answer 20

Growth stage

Question 21

> rapid transition between the growth and fully developed.
burning gases push out of opening in the compartment.
• all combustible materials in the compartment are burning.
Which produce maximum rate of energy.
• during this stage, hot unburned gases are likely flow from the compartment of origin to adjacent compartment. The hot gases may ignite as they enter a space where air is more abundant.

Answer 21

FLASHOVER or FULLY DEVELOPED STAGE

Question 22

-fuel is consumed, energy release diminished and temperature decrease.

Answer 22

Decay stage

Question 23

Sudden introduction of oxygen to a starved fire.

Answer 23

Backdraft

Question 24

REASONS WHY RESPONSE TO FIRE CALL IS DELAYED

Answer 24

1.) TIME OF CALL OR REPORT OF FIRE IS DELAYED.
2.) DISTANCE TO FIRE SCENE.
3.) ROAD/TERRAIN FROM FIRE TRUCK TO FIRE SCENE.
4.) BUILDING CONSTRUCTION OF BUILDING UNDER FIRE.

Question 25

Use: For ordinary combustible materials such as wood, paper, cloth, and plastics. Not for: Flammable liquids, electrical fires, or metal fires.

Answer 25

Water (Class A)

Question 26

Use: Effective on flammable liquids (gasoline, oil, paints) and ordinary combustibles. • Not for: Electrical fires or metal fires.

Answer 26

Foam (Class A & B)

Question 27

АВС Туре: Suitable for Class A (ordinary combustibles), Class B (flammable liquids), and Class C (electrical fires). • ВС Туре: Works on Class B (flammable liquids) and Class C (electrical fires), but not on Class A • Not for: Metal fires.

Answer 27

Dry Chemical Powder (ABC or BC)

Question 28

Use: Ideal for electrical fires and flammable liquid fires. • Not for: Ordinary combustibles or metal fires.

Answer 28

Carbon Dioxide (COz) (Class B & C)

Question 29

• Use: Specifically for kitchen fires (cooking oils, fats, grease). • Not for: Electrical fires or flammable liquids.

Answer 29

Wet Chemical (Class K)

Question 30

• Use: Suitable for electrical fires and flammable liquid fires, often used in computer rooms, data centers, and aircraft. • Not for: Metal fires or ordinary combustibles.

Answer 30

Clean Agent (Class B & C)

Question 31

Use: Designed for metal fires involving magnesium, titanium, sodium, and aluminum. • Not for: Other fire classes

Answer 31

Dry Powder (Class D)