Pump 15

Question 1

The majority of foams in use today are the ($$$$$$)

Answer 1

Mechanical type

Question 2

($$$$$) must be proportioned and aerated before they can be used.

Answer 2

Mechanical

Question 3

($$$$$$) the raw foam liquid in its storage container before being combined with air and water.

Answer 3

Foam concentrate

Question 4

($$$$$$). The device that introduces foam concentrate into the water stream to make the foam solution.

Answer 4

Foam proportioner

Question 5

($$$$$$$) the mixture of foam and water before the introduction of air.

Answer 5

Foam solution

Question 6

($$$$) the completed product after air is introduced to the foam solution.

Answer 6

Foam

Question 7

Class fuels a divided into two categories

Answer 7

Hydrocarbons

Polar solvents

Question 8

($$$$) creates a barrier between the fuel and the fire.

Answer 8

Separating

Question 9

($$$$$$) lowers the temperature of the fuel and adjacent surfaces

Answer 9

Cooling

Question 10

($$$$. Prevents the release of flammable vapors and there fore reduces the possibility of ignition or re ignition.

Answer 10

Suppressing

Question 11

The term ($$) is used to describe the mixing of water with foam concentrate to for foam solution.

Answer 11

Proportioning

Question 12

Most fire fighting foam concentrates are intended to be mixed with ($$$$$$) water

Answer 12

94 to 99.9%

Question 13

Class A foams can be adjusted between ($$$$$) to achieve specific objectives.

Answer 13

0.1 to 1.0%

Question 14

There are four different methods by which foam can be proportioned

Answer 14

Induction
Injection
Batch mixing
Pre mixing

Question 15

Foam concentrate tanks on municipal pumpers range from ($$$$$)

Answer 15

20 to 200 gallons

Question 16

Fire attack and overhaul with standard fog nozzles ($$$$$$) foam concentrate

Answer 16

0.2 to .5%

Question 17

Exposure protection ($$$$$$) foam concentrate

Answer 17

0.5 to1.0%

Question 18

Any application with air aspirating foam nozzles ($$$$) foam concentrate.

Answer 18

0.3 to 0.7 %

Question 19

Any application with CAFS ($$$$$$) foam concentrate.

Answer 19

0.2 to 0.5 %

Question 20

Protein based foams have a normal shelf life of about (&$$$)

Answer 20

10 years

Question 21

Synthetic based foams have a shelf life of ($$$$$$)

Answer 21

20 to 25 years

Question 22

Todays classB foams are mixed in proportions of ($$$$$).

Answer 22

1 to 6%

Question 23

These concentrations are normally used at ($$$$$$) for hydrocarbons, And ($$$$$$) on polar solvents.

Answer 23

1 to 3%

3 to 6%

Question 24

Medium ex passion foams are typically used at ($$$$$) concentrations.

Answer 24

1,2,3%

Question 25

NFPA 11

Answer 25

Standard for low, medium, and high expansion foam.

Question 26

Low expansion foam has a ratio of up to ($$$) parts finished foam for every part of foam solution. ($$$$) ratio.

Answer 26

20

20:1

Question 27

Helium expansion foam is used at a ($$$$$) to ($$$$$) ratio, through hydraulically operated nozzle style devices.

Answer 27

20: 1
200: 1

Question 28

In the high expansion foams the expansion rate is ($$$$) to ($$$$$$).

Answer 28

200: 1
1000: 1

Question 29

($$$$$$) generally has good heat stability and resists burn back, but it is not as mobile or fluid on the fuel surface as other types of low expansion foam.

Answer 29

Regular protein foam

Question 30

($$$$$$) a combination protein based and synthetic based foam, is derived FRO protein foam concentrates to which fluorochemical surfactants are added.

Answer 30

Fluoroprotein foam

Question 31

($$$$) concentrate is based on fluoroprotein foam technology with aqueous film forming foam capabilities.

Answer 31

Film forming fluoroprotein foam(FFFP)

Question 32

($$$$$$) is the most common used foam today. Completely synthetic. It consists of fluorochemical and hydrocarbon surfactants combined with high boiling point solvents and water.

Answer 32

Aqueous film forming foam (AFFF)

Question 33

The pressure at the outlet of the eductor( also called back pressure) must not exceed ($$$$$) of the eductor inlet pressure.

Answer 33

65 to 70%