Extinguishers

Question 1

Many fire extinguishers use up there supply in

Answer 1

8-10 seconds

Question 2

Typical expelling gas used in extinguishers is

Answer 2

Nitrogen

Question 3

Six methods of expulsion are

Answer 3

• self generating
• self expelling (co2)
• Gas cartridge or cylinder (nitrogen)
• stored pressure (common)
• mechanically pumped (water)
• Hand Propelled

Question 4

Acronym for fire extinguishers

Answer 4

P - pull pin
A - aim at base of fire
S - squeeze discharge lever
S - sweep rapidly back and forth

Question 5

When inspected, how is internal fullness checked

Answer 5

Weighing or hefting

Question 6

Extinguishers are inspected

Answer 6

Monthly

Question 7

Class A shape and colour

Answer 7

Green Triangle

Question 8

Class B shape and colour

Answer 8

Red Square

Question 9

Class C shape and colour

Answer 9

Blue circle

Question 10

Class D shape and colour

Answer 10

Yellow star

Question 11

Class K shape and colour

Answer 11

Black hexagon

Question 12

Class A hazard

Answer 12

Ordinary combustible (wood, paper, fabric)

Question 13

Class B hazard

Answer 13

Flammable Fuels

Question 14

Class C hazard

Answer 14

Energized electrical

Question 15

Class D hazard

Answer 15

Combustible metals

(Magnesium, Titanium, Zirconium, Sodium, Potassium)

Question 16

Class K hazard

Answer 16

Cooking materials

Question 17

Dry Chemical extinguisher is used on which class of fire

Answer 17

B & C

Question 18

Multi-Purpose Dry chem is used on what fires

Answer 18

A, B & C

Question 19

What’s the difference between dry chem and multi purpose dry chem

Answer 19

Multi-Purpose has ammonium phosphate in it

Question 20

2 basic styles of Dry chem extinguishers is

Answer 20

Stored pressure
Cartridge operated

Question 21

Wet chemical extinguishers can be used with what classes of fires

Answer 21

Class A & K

Question 22

Wet chemical extinguishers using a base agent of

Answer 22

Aqueous solution of organic salts that form an extinguishing agent

Question 23

Dry powder is used to extinguish what class of fires

Answer 23

Class D

Question 24

How does dry powder prevent re ignition

Answer 24

Forming hard crust on metal

Question 25

dry chem discharge range

Answer 25

6-8ft

Question 26

Water extinguisher has a range of

Answer 26

35-40ft

Question 27

Foam extinguisher has a range of

Answer 27

25-30ft

Question 28

Water approx. discharge time

Answer 28

55 seconds

Question 29

Water extinguisher most common size

Answer 29

2.5 gal

Question 30

Water mist contains what and is used where

Answer 30

-De-ionized water -used where unregulated amounts of water used could cause excessive damage (museum, library)

Question 31

Halon isn’t used in regular circumstances anymore because

Answer 31

It causes damage to the ozone layer

Question 32

Halon was used on

Answer 32

Class B or C fires

Question 33

2 most common types of halon are

Answer 33

1211 and 1301

Question 34

CO2 extinguishers should be discharged from horn at

Answer 34

45 degree angle

Question 35

CO2 is not to be used on

Answer 35

Pressurized Fuel

Question 36

CO2 extinguishers are to be used on what classes

Answer 36

Class B & C

Question 37

CO2 discharge method

Answer 37

Self expelling (due to its high pressure at room temp)

Question 38

CO2 max discharge range

Answer 38

3ft to 8ft

Question 39

What year did all inverting types of extinguishers stop being manufactured

Answer 39

1969

Question 40

Types of inverting extinguishers

Answer 40

Soda acid Foam Cartridge operated water and Loaded stream type

Question 41

Two basic types of water extinguishers are

Answer 41

Stored pressure Pumped pressure

Question 42

What kind of acid in “soda acid extinguisher”

Answer 42

Sulfuric acid

Question 43

Soda acid extinguisher has what added into the water

Answer 43

Sodium bicarbonate

Question 44

Nozzle on foam extinguisher is

Answer 44

Air aspirating

Question 45

CO2 is stored in a heavy shell at pressures up too

Answer 45

800-900psi

Question 46

Dry chem come in sizes

Answer 46

5-30lbs

Question 47

Signs on extinguishers shall indicate

Answer 47

Purpose Content Usage

Question 48

Markings on extinguishers shall be legible from

Answer 48

3 feet

Question 49

Markings on wall panels shall be legible from

Answer 49

15 feet

Question 50

Hydrostatic test every

Answer 50

5 OR 12 years (depends on discharge method)

Question 51

Extinguisher under 40Lbs mounting height

Answer 51

No more then 5ft

Question 52

Extinguisher over 40Lbs

Answer 52

3 1/2’ max from floor

Question 53

Never shall an extinguisher be located less then ____ off the floor

Answer 53

4”

Question 54

Max distance between extinguishers is

Answer 54

75ft

Question 55

Minimum “A” rating light hazard

Answer 55

2-A

Question 56

Minimum “A” rating ordinary hazard

Answer 56

2-A

Question 57

Minimum “A” rating extra hazard

Answer 57

4-A

Question 58

Minimum floor area per unit of “A”light hazard

Answer 58

3000sqft

Question 59

Minimum floor area per unit of “A” ordinary hazard

Answer 59

1500sqft

Question 60

Minimum floor area per unit of “A” extra hazard

Answer 60

1000sqft

Question 61

Maximum floor area per unit extinguisher

Answer 61

11, 250sqft

Question 62

Water extinguishers interrupt the fire triangle by

Answer 62

Removing heat

Question 63

Foam extinguishers interrupt the fire triangle by

Answer 63

Separate the oxygen

Question 64

Carbon dioxide extinguishers interrupt the fire triangle by

Answer 64

Takes away oxygen, and removes heat with very cold discharge

Question 65

Dry Chem extinguishers interrupt the fire triangle by

Answer 65

Creates a barrier between oxygen and the fuel

Question 66

Wet chem extinguishers interrupt the fire triangle by

Answer 66

Barrier between oxygen and fuel

Question 67

Dry powder extinguishers interrupt the fire triangle by

Answer 67

Separating the fuel from oxygen, and removing heat