CHAPTER 7 - PORTABLE FIRE EXTINGUISHERS

Question 0

Often used to protect areas containing volatile flammable liquids

Answer 0

Dry chemical

Question 1

Portable firefighting device designed to combat incipient fires

Answer 1

Fire extinguisher

Question 2

Extinguishing agent suitable for use on combustible metal fires

Answer 2

Dry powder

Question 3

Usually installed in range hoods and associated ducting where grease may accumulate

Answer 3

Wet chemical system

Question 4

Any substance use for the purpose of controlling or extinguishing a fire

Answer 4

Extinguishing agent

Question 5

Phenomenon that occurs when mixtures of alkaline based chemicals and certain cooking oils come into contact resulting in the formation of soapy foam

Answer 5

Saponification

Question 6

A fire extinguisher capable of atomizing water through a special applicator

Answer 6

Watermist

Question 7

Water from which ionic salts, minerals, and impurities have been removed by ion exchange

Answer 7

Deionized water

Question 8

The most effective appliance for the generation of low expansion foam

Answer 8

Air aspirating foam nozzle

Question 9

Chemical compounds that contain carbon plus one or more elements from the halogen series. Halon 1301 and halon 1211 are most commonly used as extinguishing agents for class B and C fires

Answer 9

Halogenated extinguishing agents

Question 10

Capable of causing corrosion by gradually eroding, resting, or destroying a material.

Answer 10

Corrosive

Question 11

The five classes of portable fire extinguishers match the five classes of fire. True or false?

Answer 11

True

Question 12

Class B fires can be extinguished with water, water based agents, and dry chemicals. True or false?

Answer 12

False – carbon dioxide, dry chemicals, class B foam

Question 13

Dry chemical and dry powder extinguishers are essentially the same. True or false?

Answer 13

False – if confused the reaction may be violent

Question 14

Extinguishing agents use only one method to extinguish a fire. True or false?

Answer 14

False – smothering, cooling, chain breaking, saponification

Question 15

Wet chemical stored pressure extinguishers are intended for use on class K fires

Answer 15

True

Question 16

Carbon dioxide CO2 extinguishers can be found in both handheld and wheeled units.

Answer 16

True

Question 17

When using a wheeled dry chemical unit, allow a few minutes for the unit to fully pressurize after introducing the gas before opening the nozzle.

Answer 17

False – allow a few seconds not minutes

Question 18

When using a portable fire extinguisher always approach the fire with the wind at your back. True or false?

Answer 18

True

Question 19

If a fire is not reduced in size after using an entire extinguisher, try using another entire extinguisher before reassessing the situation. True or false?

Answer 19

False – withdraw and reassess after one

Question 20

Stand empty portable fire extinguishers up to signal to others that the unit is empty. True or false?

Answer 20

False – lay them down

Question 21

Privately owned extinguishers have no inspection regulations. True or false?

Answer 21

False – they are regulated by local codes and standards

Question 22

Some cleaning solvents may damage plastic parts of portable fire extinguishers. True or false?

Answer 22

True

Question 23

Dry chemical extinguishers must be emptied and refilled every six years. True or false?

Answer 23

True