5

Question 1

are called handheld active fire protection systems in
the form of devices that apply agents or substances that are designed to control fire or to extinguish it in full.

Answer 1

FIRE EXTINGUISHERS

Question 2

It either reduces or cools the temperature, smothers the heat, replaces the oxygen or a combination of the three so that a fire could be extinguished.

Answer 2

FIRE EXTINGUISHERS

Question 3

They could also be seen as mechanical instruments made of metal that contain chemicals, fluids, or gasses that serve the purpose of halting the growth or the continuous
burning of a fire.

Answer 3

FIRE EXTINGUISHERS

Question 4

TYPES OF FIRE EXTINGUISHERS (7)

Answer 4

WATER FIRE EXTINGUISHERS
FOAM EXTINGUISHERS
DRY CHEMICAL
LIQUEFIED FIRE EXTINGUISHER
SODA-ACID FIRE EXTINGUISHER
VAPORIZING LIQUID FIRE EXTINGUISHER
CARBON DIOXIDE

Question 5

• contains H20 and labeled with a RED color

Answer 5

WATER FIRE EXTINGUISHERS

Question 6

WATER FIRE EXTINGUISHERS
Used mostly for:
Not used for:

Answer 6

CLASS A FIRES (Solid combustibles such as wood, paper, cloth) AND SOMETIMES IN CLASS B FIRES

CLASS C FIRES

Question 7

• contains a mixture of water substances and foam materials (composed of sodium carbonate and aluminum sulfate) that creates a blanket that could smother a fire

Answer 7

FOAM EXTINGUISHERS

Question 8

FOAM EXTINGUISHERS-
Used mostly for:
Not used for:

Answer 8

CLASS A FIRES (Solid combustibles such as wood, paper, cloth) AND CLASS B (Flammable liquids such as diesel and fuel) FIRES

CLASS C and D FIRES

Question 9

• contains a dry chemical or foam which mostly consists of
  phosphates and sulfates which interrupts the chemical reaction of the production of a fire.

Answer 9

DRY CHEMICAL

Question 10

DRY CHEMICAL-
Used mostly for:

Answer 10

ALL CLASSES OF FIRES

Question 11

contains liquefied gasses such as Carbon Monoxide gas in order to put out fires.

Answer 11

LIQUEFIED FIRE EXTINGUISHER

Question 12

LIQUEFIED FIRE EXTINGUISHER-
Used mostly for:

Answer 12

CLASS A, B, and C (caused by electrical anomalies) FIRES

Question 13

Working principle: This extinguisher contains 3 containers one with water and one with Sodium Bicarbonate and a separate container with Sulfuric acid. When the extinguisher is upside down the container with the Sulfuric acid breaks and mixes with Sodium Bicarbonate. This mixture produces Carbon Dioxide which pressurizes the extinguisher itself thus ejecting the substances
out of the extinguisher. The mixture of Water, Sodium Bicarbonate, and Carbon Dioxide smothers the flames and replaces the Oxygen.

Answer 13

SODA-ACID FIRE EXTINGUISHER

Question 14

SODA-ACID FIRE EXTINGUISHER-
Used mostly for:

Answer 14

CLASS A FIRES

Question 15

• contains non-conducting liquid usually referred to as Carbon tetrachloride or Chlorobromomethane.

Answer 15

VAPORIZING LIQUID FIRE EXTINGUISHER

Question 16

VAPORIZING LIQUID FIRE EXTINGUISHER- contains non-conducting liquid usually referred to as

Answer 16

Carbon tetrachloride or Chlorobromomethane.

Question 17

The principle of this extinguisher is by putting out fires by the creation of a blanket which smothers the fire due to the vaporization of the contents of the extinguisher when it is subjected to the heat of the fire.

Answer 17

VAPORIZING LIQUID FIRE EXTINGUISHER

Question 18

V APORIZING LIQUID FIRE EXTINGUISHER
Used mostly for:

Answer 18

CLASS B AND C FIRES

Question 19

• contains CO2 which mostly removes the presence of sources of Oxygen near a fire.

Answer 19

CARBON DIOXIDE

Question 20

CARBON DIOXIDE-
Used mostly for:

Answer 20

CLASS B AND C FIRES

Question 21

are materials or substances that are used to suppress or extinguish fires.

Answer 21

EXTINGUISHING AGENTS

Question 22

These agents are selected based on their ability to interrupt
the combustion process in different ways; such as cooling the fire, creating a barrier between the fuel and the oxygen, or removing one or more elements of the fire triangle.

Answer 22

EXTINGUISHING AGENTS

Question 23

EXAMPLES OF EXTINGUISHING AGENTS

Answer 23

Aqueous Film Forming Foam (AFFF)
CARBON DIOXIDE
HALON 1211
MULTI-PURPOSE DRY CHEMICALS

Question 24

• is a synthetic foam-forming liquid designed for use with fresh water.

Answer 24

Aqueous Film Forming Foam (AFFF)

Question 25

Aqueous Film Forming Foam (AFFF)-
Used mostly for:

Answer 25

CLASS A (ordinary fires) and B (liquid fires) FIRES

Question 26

• is a chemical that can deliver a quick smothering action to the flames, reducing the oxygen and suffocating the fire.

Answer 26

CARBON DIOXIDE

Question 27

CARBON DIOXIDE-
Used mostly for:

Answer 27

CLASS B (liquid fires) and C (electrical fires) FIRES

Question 28

• is also known as Bromochlorodifluoromethane (BCF). This is a streaming agent that is effective on all common types of fires (A, B, C) and is used only in portable, hand-held fire extinguishers.

Answer 28

HALON 1211

Question 29

HALON 1211-
Used mostly for:

Answer 29

CLASS B (liquid fires) and C (electrical fires) FIRES, but is also effective in CLASS A (ordinary fires) FIRES

Question 30

• is used in ABC Fire Extinguisher such as mono-ammonium phosphate [(NH4)H2PO4], a dry chemical with the ability to quickly put out all three classes of fire (A, B, C) by smothering the flames. They are the most versatile as they can be used to extinguish common combustible, flammable liquid, and live electrical equipment fires.

Answer 30

MULTI-PURPOSE DRY CHEMICALS

Question 31

mono-ammonium phosphate, chem formula

Answer 31

[(NH4)H2PO4]

Question 32

HALON 1211- is also known as

Answer 32

Bromochlorodifluoromethane (BCF)

Question 33

MULTI-PURPOSE DRY CHEMICALS-
Used mostly for:

Answer 33

CLASS A (ordinary fires), B (liquid fires), and C (electrical fires) FIRES

Question 34

dissipates without leaving any contamination or corrosive residue.

Answer 34

Carbon dioxide (CO₂)