Questions

Question 0

What pressure does the pump rating receive it’s flow rating at?

Answer 0

150psi

Question 1

What is the water passage called in centrifugal pump?

Answer 1

Volute

Question 2

Most common type of packing is made of what type of material?

Answer 2

Rope fibers impregnated with graphite

Question 3

What can be damaged if pump is ran dry?

Answer 3

The shaft

Question 4

What is approx gpm limit with pto pumps?

Answer 4

95

Question 5

In multiple stage pumps, where is the tank fill line taken from?

Answer 5

First stage

Question 6

For tank sizes smaller than 1,000 gallons, what does NFPA require for intake size?

Answer 6

1”

Question 7

Gate valves are commonly opened by what type of valve?

Answer 7

Hand wheels

Question 8

Butterfly valves are commonly opened by what type of valve?

Answer 8

Quarter turn

Question 9

Intakes or discharges that are 3” or greater require ____ controls? This prevents fully open or fully closed in how many seconds?

Answer 9

Slow acting to prevent movement to fully closed or fully open in less than 3 seconds.

Question 10

4 types of primers?

Answer 10

Positive displacement
Oil-less
Exhaust primers
Vacuum primers

Question 11

Two purposes of oil in primers

Answer 11

Thin film seals gaps between gears and case

Acts as preservative and minimizes deterioration by inhibiting corrosion.

Question 12

Do not allow intake pressure from hydrant to drop below?

Answer 12

20psi

Question 13

Hydrant color codes

Light blue?

Answer 13

Class AA

Question 14

Class A

Answer 14

Green

Question 15

Orange

Answer 15

Class B

Question 16

Class C

Answer 16

Red

Question 17

Another name for dry barrel hydrants?

Answer 17

Frost proof hydrants

Question 18

Addition water available In hydrant

0-10%
11-15%
16-25%
25%+

Answer 18

0-10. 3x
11-15. 2x
16-25 same
25+. More might be available

Question 19

Minimum distance around strainer?

Answer 19

24”

Question 20

Class b fuels categorized into what?

Answer 20

Hydrocarbons and polar solvents

Question 21

Examples of hydrocarbons

Answer 21

Fuel oil
Gasoline
Kerosene

Question 22

Examples of polar solvents

Answer 22

Alcohol

Ketones

Question 23

Which type of fuel mixes with water?

Answer 23

Polar solvents

Question 24

How does foam work?

Answer 24

Separating
Cooling
Suppressing

Question 25

4 ways to proportion foam?

Answer 25

Induction
Injection
Batch mixing
Premixing

Question 26

How many gallons In a Tote?

Answer 26

275 G

Question 27

Shelf life of class a foam?

Answer 27

20 years

Question 28

Class a foam is proportioned at what %?

Answer 28

.1%-1%

Question 29

Protein based foams shelf life?

Answer 29

10 years

Question 30

Normally what percentages of foam would be required for each hydrocarbons and polar solvents?

Answer 30

1-3% hydrocarbons

3-6% Polar solvents

Question 31

Ratio for low medium and high expansion foams?

Answer 31

Low 20:1
Medium 20:1-200:1
High 200:1-1000:1

Question 32

What is fluoroprotein foam derived from?

Answer 32

Protein foam to which fluorochemical surfactants are added

Question 33

How long can alcohol resistive foam maintain it’s alcohol resistive properties for?

Answer 33

15 min

Question 34

AFFF is made of what?

Answer 34

Hydrocarbon surfactants
Fluorochemical
High boiling point

Question 35

What type of air compressor is used for cafs?

Answer 35

Rotary

Question 36

Up to what diameter can a smooth vote nozzle be used for cafs?

Answer 36

1 1/4”