Chap.11 Ifsta Pumping Apparatus Driver/operator 2Nd Edition

Front 1

The first step that all driver/operators must take in order to begin any pumping operation?

Back 1

Make the fire pump operational

Front 2

Driver operators have what three types of water sources to choose from to supply their pump?

Back 2

- Onboard water tank
- Pressurized source
- Static source

Front 3

Tests have indicated that the apparatus may override the parking brake system at engine speeds as low as what?

Back 3

1300 rpm

Front 4

IFSTA recommends that what gets done every time an engine is left running and the driver/operator exits the cab?

Back 4

The wheels get chocked

Front 5

What is the process for engaging auxiliary engine driven water pumps?

Back 5

Starting the engine since the pump is always in gear when the engine is running.

Front 6

Of the three possible types of water supply for the fire pump, most driver/operators operate solely form what on a vast majority of incidents?

Back 6

onboard water tank

Front 7

In most cases, a multi-stage pump should be operated in what position when operating from the onboard tank?

Back 7

Series(pressure)

Front 8

Some manufacturers recommend that their pumps remain in series until u to what percentage of pump capacity is required?

Back 8

70%

Front 9

If the pump is normally full of water, what should the Master Pressure Gauge do as soon as the rpm is increased?

Back 9

The pressure gauge should start to rise.

Front 10

What should be done if RPM is increased and the master pressure gauge still fails to rise?

Back 10

Immediately decrease engine speed, return to the cab and ensure that the transmission is in the right gear and the pump shift transfer has been made.

Front 11

What are the two basic pressurized water sources?

Back 11

-Hydrant
- Supply hose from another fire pump.

Front 12

Operating from a negative pressure can increase the possibility of what happening to the fire pump?

Back 12

Damage to the pump due to cavitation.

Front 13

To avoid possible damage to the water system, you should not let the intake pressure form a hydrant to drop below what?

Back 13

20 PSI

Front 14

What is the first consideration in selecting a hydrant?

Back 14

Which hydrant is most appropriate in terms of fire fighting and safety.

Front 15

The worst hydrants are typically located on what?

Back 15

"Dead-end mains"

Front 16

What is the NFPA standard for Recommended Practice for Fire Flow Testing and Marking of Hydrants?

Back 16

NFPA 291

Front 17

What are the two primary ways that a fir department may use a hydrant

Back 17

- Forward Lay
- Reverse Lay

Front 18

Hydrants flow rates:
Class AA Light Blue

Back 18

1500 gpm or greater

Front 19

Hydrants flow rates:
Class A Green

Back 19

1,000-1,499 GPM

Front 20

Hydrants flow rates:
Class B Orange

Back 20

500-999 GPM

Front 21

Hydrants flow rates:
Class C Red

Back 21

Less than 500 GPM

Front 22

Dry-barrel hydrants are also called what?

Back 22

Frost Proof Hydrants

Front 23

When using 2 1/2" or 3" hoselines to supply the pumper directly off hydrant pressure, it is recommended that the lines be no longer than what?

Back 23

300'

Front 24

When using threaded couplings, what should be the first coupling off of a hosebed loaded for a reverse lay?

Back 24

Male

Front 25

When hose is laid from the fire to the water source.

Back 25

Reverse Lay

Front 26

When hose is laid from a water source to the fire.

Back 26

Forward Lay

Front 27

What is the disadvantage to reverse lays when only one company is on scene?

Back 27

There is a delay in fire attack from having to remove necessary equipment, attack lines, and waiting for the pumper to get the water source and begin pumping lines.

Front 28

The pressure shown on the intake gauge when connected to a hydrant and not flowing any hoslines.

Back 28

Static pressure

Front 29

The intake pressure gauge reading when the pumper is flowing hoselines.

Back 29

Residual pressure

Front 30

What are the three methods that can be used to calculated how much more water can be supplied?

Back 30

- Percentage method
- First-digit method
- Squaring the lines method

Front 31

What is the equation for for percentage method?

Back 31

percent drop=
(static-residual)(100) / static

Front 32

To successfully use the Squaring-the-lines method what must you note?

Back 32

The static pressure on the water system before any of the pump discharges are open.

Front 33

In the squaring-the-lines method, you may note that the pressure drop in the system is quadrupled each time the flow rate is _______.

Back 33

doubled

Front 34

After a hydrant is closed and before the last cap is put back on, the operator should do what?

Back 34

Visually and physically check to be sure that the water is draining from the hydrant.

Front 35

The friction loss in hard intake hose is dependent on what?

Back 35

- The diameter of the hose
- The length of the hose

Front 36

What is the maximum amount f vacuum that most pumps can develop?

Back 36

22" mercury

Front 37

Condition where, in theory, water is being discharged from the pump faster than it is incoming.

Back 37

Cavitation

Front 38

Indications that a pump is cavitating.

Back 38

- Pulsating hose streams
- Fluctuating pump on pressure gauge
- Popping or sputtering as water leaves nozzle.
- Pump sounds like gravel is moving through it
- Lack of reaction on pressure gauge when throttle is adjusted.

Front 39

What is the first consideration in establishing a successful drafting operation?

Back 39

Selecting a site

Front 40

If a drafting site is being selected for a water shuttle operation there may be several location choices. What factors will dictate which location to choose?

Back 40

- Amount of water
- Type of water
- Accessibility of water

Front 41

For a pumper to reach it's rated capacity using a traditional strainer, it is desirable for it to have how much space all around the strainer?

Back 41

2 feet

Front 42

What can be done to prevent a whirlpool over a strainer in a drafting operation?

Back 42

Place an object that floats over the strainer.

i.e. wooden board, capped plastic bottle, beach ball

Front 43

Low level strainers are capable of allowing the water to be drafted down to what depth?

Back 43

about 2"

Front 44

What should be done anytime that corrosive or nonpotable water has been pumped?

Back 44

The pump should be flushed wit fresh water

Front 45

As the amount of lift increases, what occurs when drafting through hard intake hose?

Back 45

- Elevation pressure increases
- Less friction loss can be overcome
- Capacity of the pump is decreased

Front 46

At 20ft of lift, the amount of water that can be supplied is only about __% of the rated cpacity of the pump.

Back 46

60%

Front 47

Why would it be necessary to remove the intake valve on a drafting operation?

Back 47

If it is a butterfly valve, it will obstruct the waterway and reduce the drafting capacity.

Front 48

The priming action should not be stopped until what has happened?

Back 48

All the air has been removed and the pump s discharging a steady stream of water.

Front 49

The entire priming action typically requires how long from start to finish?

Back 49

10-15 seconds

Front 50

What could cause the priming action to take longer than normal?

Back 50

- More than 20 ft of hard suction
- 10ft or more of lift
- Pumps larger than 1250GPM

Front 51

If prime hasn't been achieved in 30 seconds, what should be done?

Back 51

stop priming and check t see what the problem is.

Front 52

What is the most common cause of inability to prime?

Back 52

Air leak that prevents primer from developing enough vacuum.

Front 53

If no air leaks are found, what else could be possible causes for inability to prime?

Back 53

- Insufficient fluid in the priming reservoir
-Engine speed is too low
- Lift is to high
- A high point in the hard intake hose creating an air pocket

Front 54

Why should a small line be left discharging when running a drafting operation?

Back 54

When no water is being discharged, even the smallest air leak may result in a loss of vacuum.

Front 55

Problems that occur while operating from draft fall into one of what three categories?

Back 55

- Air leak on the intake side of the pump
- Whirlpool allowing air to enter the pump
- Air leakage due to defective packing in the pump

Front 56

While the pump is operating in a draft, a gradual increase in the vacuum reading may be noted with no change in flow rate. What is this an indication of?

Back 56

A blockage developing

Front 57

Where is the most common place for a blockage to develop in a drafting operation?

Back 57

At the strainer

Front 58

FDC consist f what in order for the pump to be connected?

Back 58

A siamese with at least two 2 1/2" female connections or one LDH sexless connection that is connected to a clapper inlet.

Front 59

It is a rule of thumb that one 1,000gpm rated pumper should supply the FDC for every __ sprinklers that are estimated to be flowing.

Back 59

50

Front 60

It is general rule of thumb to discharge ___psi into the FDC.

Back 60

150psi

Front 61

Add approximately _psi to the desired nozzle pressure for each floor above the standpipe connection that will have operating fire streams.

Back 61

5psi

Front 62

Pump discharges in excess ___psi are not encouraged unless the standpipe system has been designed to withstand those higher pressures.

Back 62

200psi

Front 63

When standpipe is equipped with pressure-reducing valves, the elevation pressure should be based on what?

Back 63

Total height of the standpipe