Fire Extinguishers

Question 1

Foam nozzle especially designed to provide the aeration required to make the highest quality foam possible; most effective appliance for the generation of low expansion foam.

Answer 1

air-aspirating foam nozzle

Question 2

A phenomenon that occurs when mixtures of alkaline-based chemicals and certain cooking oils come into contact resulting in the formation of a soapy film.

Answer 2

saponification

Question 3

Extinguishing system that uses dry chemical as the primary extinguishing agent; often used to protect areas containing volatile flammable liquids.

Answer 3

dry chemical

Question 4

Any substance used for the purpose of controlling or extinguishing a fire.

Answer 4

extinguishing agent

Question 5

Chemical compounds(halogenated hydrocarbons) that contain carbon plus one or more elements from the halogen series.

Answer 5

halogenated extinguishing agents. Halon 1211 and 1301 were most commonly used (class B & C), before being replaced with FM 100, due to environmental risks associated with ozone damage.

Question 6

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

Answer 6

corrosive

Question 7

Extinguishing agent suitable for use on combustible metal fires.

Answer 7

dry powder

Question 8

Extinguishing system that uses a wet chemical solution as the primary extinguishing agent; usually installed in range hoods and associated ducting where grease may accumulate.

Answer 8

wet chemical system

Question 9

The A rating on an extinguisher is a water equivalency rating. Each A is equivalent to:

Answer 9

1.25 gallons

Question 10

The B:C rating is equivalent to the amount of:

Answer 10

square footage that related to the degree of training and experience of the operator, the extinguisher can cover. 20 B:C = 20 square feet of coverage.

Question 11

Type of extinguisher represented by a green triangle:

Answer 11

Class A. This is the only extinguisher matched to the wrong international symbol (star)

Question 12

Type of extinguisher represented by a red square:

Answer 12

Class B

Question 13

Type of extinguisher represented by a blue circle:

Answer 13

Class C

Question 14

Type of extinguisher represented by a yellow star:

Answer 14

Class D

Question 15

What extinguishers don’t have numeric ratings:

Answer 15

Class C and D (C fires are essentially energized A or B fires).

Question 16

Only type of extinguisher without a guage:

Answer 16

Co2. Co2 extinguishers are only effective on class B and C fires, and have a reduced range.

Question 17

AFFF extinguishers are effective on:

Answer 17

Class A & B