Pump

Question 1

IF the nozzle is at a higher elevation than the pump, the static pressure will be ______ the pressure at the pump

A) Lower than
B) Higher than
C) The same

Answer 1

C) Lower than

Question 2

The damaging force created by quickly stopping the water that is flowing in a closed system is known as

Answer 2

Water hammer

Question 3

Friction loss is caused by

A) Movement of water in the hose
B) Couplings
C) Kinks and bends
D) All of the above

Answer 3

D) All of the above

Question 4

The City of Calgary water system has ____ pressure zones

A) 7
B) 47
C) 14
D) 53

Answer 4

C) 47

Question 5

The max space between hydrants in a residential area is ____

A) 300m
B) 100m
C) 200m
D) 150m

Answer 5

B) 300m

Question 6

Water services designed the grid system to supply water for commercial, residential and firefighting. What percent is intended for commercial and residential combined

A) 40%
B) 60%
C) 20%
D) 80%

Answer 6

20%

Question 7

To achieve the required fire flow water services allows the use of_____

A) 4 hydrants
B) 2 hydrants
C) 1 hydrant
D) 3 hydrants

Answer 7

D) 3 hydrants

Question 8

Under extreme circumstances the fire department can boost system pressure by pumping back into the hydrant

True or false

Answer 8

False

Question 9

The max space between hydrants in a commercial area is ____

A) 300m
B) 100m
C) 200m
D) 150m

Answer 9

D) 150

Question 10

How far away does the second hydrant need to be to have minimal impact on the initial water supply system?

Answer 10

2 blocks

Question 11

How often are hydrants updated on the MDT?

Answer 11

Quarterly

Question 12

Friction loss is reduced by using ?

Answer 12

Large Diameter hose

Question 13

At sea level atmospheric pressure is equal to ?

Answer 13

Answer 100 kPa (14.7 psi)

Question 14

Under extreme circumstances the fire department can boost system pressure by pumping back into a hydrant?

Answer 14

False

Question 15

How much greater can the friction loss of an old hose be compared to that of a new hose?

Answer 15

Answer As much as 50% greater

Question 16

The transfer valve allows the two stage pump to run in which two positions?

Answer 16

Answer Pressure & Volume

Question 17

City of Calgary hydrants are on what type of a system?

Answer 17

Answer Grid system

Question 18

What is a Primary feeder line?

Answer 18

Large pipes, with relatively wide spread spacing that carries large quantities of water to various points of the system for local distribution into smaller mains.

Question 19

What is a secondary feeder line?

Answer 19

A network of intermediate sized pipes that reinforces the grid within the various loops of the primary feeder system.

Question 20

What is a distributor line?

Answer 20

Answer The grid arrangement of smaller mains serving individual fire hydrants and city block consumers.

Question 21

What is a dead end hydrant?

Answer 21

A hydrant that receives water flow from only one direction.

Question 22

How much water does a drop tank hold?

Answer 22

14,000 litres

Question 23

How much does 1 cubic meter of water hold and weigh?

Answer 23

1 cubic metre holds 1000 litres and weighs 1000 kg

Question 24

When pumping multiple lines of different pressures the PSG is set to which line?

Answer 24

The line with the highest pressure.All other lines are gated back

Question 25

The overheat protection manager prevents the pump from overheating by?

Answer 25

Dumping water from the pump onto the ground

Question 26

The gradually increasing size of the waterway _______ the velocity of the water thus enabling the pressure to ______ proportionately.

Answer 26

Decreases & Build Up

Question 27

On a centrifugal pump water enters the impeller through the ?

Answer 27

EYE

Question 28

At sea level a pump can theoretically lift water how high?

Answer 28

10m

Question 29

What is the difference between Vanes and Volutes?

Answer 29

Vanes transmit motion to the water, Volutes carry the water away from the impeller/pump

Question 30

Most CFD apparatus have a water capacity of how many litres?

Answer 30

2500L

Question 30

When bringing on a hydrant the operator should do what two things to compensate for a potential spike?

Answer 30

Raise the pump discharge pressure and lower the hand line pressure

Question 31

What is direct application when talking about foam application?

Answer 31

Generally limited to class A foam applications. As implied foam is applied directly to the burning material.

Question 32

What is the rain down method when talking about foam application?

Answer 32

Used when other methods of application are not feasible due to elevation or the nature of the fuel container. Stream is directed above the container and foam is allowed to rain down onto the surface of the fuel.

Question 33

What is the Bank down method when talking about foam application?

Answer 33

Used when a vertical surface is available near or within the area of the ignitable liquid. The foam stream is directed onto the vertical surface allowing the foam to run down and spread across the surface of the fuel.

Question 34

What is the Roll- On method when talking about foam application?

Answer 34

The foam is directed onto the ground near the pool or the spill. The foam rolls across the surface until the entire surface is covered and the fire is extinguished. This method is only used on open ground.

Question 35

What is a Polar Solvent ?

Answer 35

mixes readily with water, ex acetone, isopropanol, methanol, alcohol. Polar solvents destroy regular foams

Question 36

What is a hydro carbon ?

Answer 36

Answer Does not readily mix with water, ex diesel, gasoline, oil

Question 37

Dumping the tender by pumping it out through a hose is more efficient than using the dump valve.

Answer 37

False

Question 38

A dry hydrant for drafting is a hydrant that?

Answer 38

Is used for drafting from a static supply

Question 39

The steps to start drafting (with the pump in gear) are?

Answer 39

Put the PSG in RPM mode at approximately 1100 RPM, Pull/Push the primer until the pressure appears on the discharge, open a discharge.

Question 40

To increase shuttle efficiency firefighters should do what?

Answer 40

Maintain training on filling and dumping tenders.

Question 41

The priming pump is what kind of pump?

Answer 41

positive displacement pump

Question 42

When filling the booster tank be sure not to do what?

Answer 42

Answer cavitate the pump

Question 43

The relief valve on the TFT in valve is set to activate at what pressure?

Answer 43

1260 kPa or lower

Question 44

When considering a natural water supply for drafting which of the following would be a issue?

Answer 44

Wet & soft ground, Shallow water, Silt or debris laden water

Question 45

Filling & dump sites should be planned to allow for?

Answer 45

Continuous Forward motion

Question 46

Class B foams are conductive and are not recommended for use on electrical fires or in the vicinity of charged electrical lines/equipment.

Answer 46

True

Question 47

After bringing on a hydrant operators need to do what three things?

Answer 47

Mark the compound gauge, Close tank to pump and open tank fill

Question 48

Centrifugal pumps take advantage of incoming pressure and add to it?

Answer 48

True

Question 49

Before charging any lines, operators must ensure what?

Answer 49

The nozzle firefighter is ready for water

Question 50

What are the four aspects of the foam tetrahedron?

Answer 50

Water, Air, Foam concentrate, Mechanical agitation

Question 51

How does foam help to extinguish and/or prevent the ignition of Class B materials?

Answer 51

Separating, Cooling, Suppressing(smothering)

Question 52

When using multiple tanks at a dump site the goal is to?

Answer 52

keep the pool at the attack engine the fullest

Question 53

When drafting the primer creates a lower pressure in the pump and intake hose to help move the water. What external force pushes water from the source up the intake hose?

Answer 53

Atmospheric Pressure

Question 54

In which instance would the application of Class B foam be most appropriate to help with fire suppression?

Answer 54

A fire involving any type of flammable liquid where blanketing and smothering for vapour suppression is of the first importance

Question 55

Flow meters are accurate to +/- what percent?

Answer 55

3%

Question 56

What is the definition of specific gravity?

Answer 56

The density of liquids in relation to water

Question 57

Some fire apparatus have multiple impellers, each impeller is commonly referred to as what?

Answer 57

Stages

Question 58

What is the definition of altitude?

Answer 58

Altitude is the position of an object above or below sea level

Question 59

What is the appropriate foam eductor setting for a deep hydro carbon spill?

Answer 59

3%

Question 60

What is the appropriate foam eductor setting for a shallow hydro carbon spill?

Answer 60

1%

Question 61

Who determines the need to set up a relay/drafting operation?

Answer 61

IC

Question 62

What determines the need for a relay operation?

Answer 62

The amount of water required at an incident and the distance between the fire scene and water source

Question 63

What is the purpose of a relief valve?

Answer 63

Relieves excess pressure before damaging the pump

Question 64

What part of the pump adjust the engine rpm to compensate for fluctuations in pressure?

Answer 64

Governor

Question 65

What is the percentage of water in water foam mixtures?

Answer 65

94%-99%