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DE STUDY > Chapter 10 > Flashcards

Chapter 10 Flashcards

1
Q

1.​The process of making a fire pump operational begins: (336)
​A.​when initiating parking maneuvers.
​B.​after the incident action plan has been put into place.
​C.​approximately five minutes before arriving at the incident scene.
​D.​after the apparatus is properly positioned and the parking brake is set.

A

​D.​after the apparatus is properly positioned and the parking brake is set.

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2
Q

2.​Most apparatus are designed so that the procedure for making the pump operational is performed: (336)
​A.​entirely from the cab of the vehicle.
​B.​entirely from the outside of the vehicle.
​C.​both from the cab of the vehicle and outside of the vehicle.
​D.​with remote control switches that can be located virtually anywhere.

A

​A.​entirely from the cab of the vehicle.

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3
Q

3.​It is recommended that wheels be chocked: (336)
​A.​when parked on a slope.
​B.​if parked more than ten minutes.
​C.​every time the driver/operator exits the cab.
​D.​when the driver/operator will leave the parked apparatus.

A

​C.​every time the driver/operator exits the cab.

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4
Q

4.​The water supply from an onboard water tank is: (336)
​A.​used only for incipient fires.
​B.​a backup supply in case of emergencies.
​C.​the sole source of supply for many incidents.
​D.​not significant enough to be the sole source of supply.

A

​C.​the sole source of supply for many incidents.

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5
Q

5.​Which BEST describes when the driver/operator is ready to operate the pump to generate sufficient pressure to create an effective fire stream? (337)
​A.​When the fire passes the incipient stage
​B.​When the water source has been identified
​C.​When all personnel have exited the apparatus
​D.​When the fire pump has been made operational

A

​D.​When the fire pump has been made operational

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6
Q

6.​When the pump is in operation, the driver/operator must: (337)
​A.​ensure the incident action plan is being followed by all team members.
​B.​monitor the cost involved in running the pump as well as possible water costs.
​C.​ensure all team members are wearing appropriate personal protective equipment.
​D.​monitor all gauges associated with the engine as well as with the operation of the fire pump.

A

D.​monitor all gauges associated with the engine as well as with the operation of the fire pump.

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7
Q

7.​If water is not flowing for an extended period of time during fire attack, why might a circulator, bypass, or booster cooling valve be opened on a pump? (337-338)
​A.​To bleed off excess air
​B.​To increase water pressure
​C.​To decrease water pressure
​D.​To prevent the pump from overheating

A

​D.​To prevent the pump from overheating

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8
Q

8.​Which is a step the driver/operator takes when transitioning to an external water supply? (338)
​A.​Completely close intake gate valve
​B.​Shut off all operations involving the pump
​C.​Connect supply line into an appropriate intake of the fire pump
​D.​Close bleeder valve on the gated intake so air will not escape

A

C.​Connect supply line into an appropriate intake of the fire pump

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9
Q

9.​The two basic pressurized water supply sources are a fire hydrant and: (339)
​A.​a water tower.
​B.​a portable water tank.
​C.​a supply hose from another pumper.
​D.​an onboard water tank or trailered water tank.

A

​C.​a supply hose from another pumper.

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10
Q

10.​If discharge flow volume is increased too much when operating from a pressurized water source: (339)
​A.​the area may become flooded.
​B.​it may lead to cavitation of the pump.
​C.​the supply hose may collapse, interrupting the water supply.
​D.​intake pressure from the supply source may be reduced to a point that may damage the pump.

A

​D.​intake pressure from the supply source may be reduced to a point that may damage the pump.

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11
Q

11.​What can occur when pumping at a low residual pressure while being supplied by other apparatus? (339)
​A.​Cavitation of the pump
​B.​Friction loss becomes too significant to overcome
​C.​Firefighters may be unable to handle the supply hose
​D.​Intake pressure from the supply source may be reduced to a point that may damage the pump

A

A.​Cavitation of the pump

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12
Q

12.​During pumping operations, driver/operators should maintain a residual pressure on the master intake gauge: (340)
​A.​of at least 10 psi (70 kPa).
​B.​of at least 20 psi (140 kPa).
​C.​that is exactly 40 psi (280 kPa).
​D.​between 20 psi (140 kPa) and 40 psi (280 kPa).

A

​B.​of at least 20 psi (140 kPa).

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13
Q

13.​Which statement about hydrant selection is MOST accurate? (340)
​A.​Any hydrant that is near the incident scene is a good choice.
​B.​Hydrants that appear older than ten years should not be used.
​C.​The closest hydrants are always the best choice because of their location.
​D.​The closest hydrants may not be the most prudent choice because of safety or fire fighting needs.

A

​D.​The closest hydrants may not be the most prudent choice because of safety or fire fighting needs.

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14
Q

14.​Which is a characteristic of “dead end mains” when referring to hydrants? (340)
​A.​Have greater water pressure
​B.​Receive supply from several directions
​C.​Have smaller amounts of sedimentation, deterioration
​D.​Contain higher amounts of sediment and deterioration

A

​D.​Contain higher amounts of sediment and deterioration

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15
Q

15.​Which hose lay is made from the hydrant to the fire location? (341)
​A.​Simple lay
​B.​Source lay
​C.​Forward lay
​D.​Reverse lay

A

​C.​Forward lay

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16
Q

16.​What is the purpose of a four-way hydrant valve in making a lay? (341)
​A.​Allows for as many supply lines as necessary
​B.​Enables firefighters to more easily turn on/off the main control valve
​C.​Allows the driver/operator to configure multiple types of lays easily and efficiently
​D.​Allows a second arriving pumper to be connected without interrupting the flow of water to the original supply line

A

D.​Allows a second arriving pumper to be connected without interrupting the flow of water to the original supply line

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17
Q

17.​Which hose lay is made from the fire to the water source? (344)
​A.​Simple lay
​B.​Source lay
​C.​Reverse lay
​D.​Forward lay

A

​C.​Reverse lay

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18
Q

18.​Which hose lay would be used when the driver/operator first reports to an incident location in order to size up the scene before laying a supply line? (344)
​A.​Simple lay
​B.​Source lay
​C.​Reverse lay
​D.​Forward lay

A

​C.​Reverse lay

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19
Q

19.​After transitioning to an external water supply, the driver/operator should: (345)
​A.​open the tank-to-pump valve.
​B.​close the tank-to-pump valve.
​C.​open the four-way hydrant valve.
​D.​close the four-way hydrant valve.

A

​B.​close the tank-to-pump valve.

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20
Q

20.​In general, pumps supplying a relay operation or master stream are used to supply large amounts of water, and therefore require: (346)
​A.​multiple settings of the transfer valve.
​B.​use of a series (pressure) setting of the transfer valve.
​C.​use of a parallel (volume) setting of the transfer valve.
​D.​the transfer valve to switch between series and parallel.

A

​C.​use of a parallel (volume) setting of the transfer valve.

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21
Q

21.​When a pumper is connected to a hydrant and not discharging water, pressure shown on intake gauge is: (347)
​A.​static pressure.
​B.​residual pressure.
​C.​atmospheric pressure.
​D.​the pressure from previous operations.

A

​A.​static pressure.

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22
Q

22.​When a pumper is discharging water, the intake gauge displays: (347)
​A.​static pressure.
​B.​residual pressure.
​C.​atmospheric pressure.
​D.​average or median pressure.

A

​B.​residual pressure.

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23
Q

23.​Which determines the additional water available from a hydrant? (347)
​A.​Difference between static pressure and residual pressure
​B.​Difference between friction loss and current water pressure
​C.​Difference between static pressure and atmospheric pressure
​D.​Sum of static pressure, residual pressure, and atmospheric pressure

A

​A.​Difference between static pressure and residual pressure

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24
Q

24.​Which method is used to determine additional water available from a hydrant? (350)
​A.​Division method
​B.​Addition method
​C.​Second-digit method
​D.​Squaring-the-lines method

A

​D.​Squaring-the-lines method

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25
Q

25.​When shutting down the hydrant, why should all changes in flow be made smoothly? (351)
​A.​To limit the amount of water that is likely to be wasted
​B.​To ensure that attack lines don’t suddenly lose pressure
​C.​To avoid surprising handline crews with sudden changes
​D.​To avoid water hammer and pressure surges on water systems

A

D.​To avoid water hammer and pressure surges on water systems

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26
Q

26.​In drafting operations, the amount of friction in the intake hose is MOST affected by the: (352)
​A.​ambient temperature.
​B.​size of the static water source.
​C.​size of the onboard water tank.
​D.​diameter and length of the hose.

A

​D.​diameter and length of the hose.

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27
Q

27.​During drafting operations, the ability to overcome losses in pressure is: (352)
​A.​not limited by any factors.
​B.​limited only by available equipment.
​C.​limited to previous atmospheric pressures.
​D.​limited to atmospheric pressure at sea level.

A

​D.​limited to atmospheric pressure at sea level.

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28
Q

28.​During drafting operations, what can occur when water is being discharged faster than it is coming into the pump? (354)
​A.​Cavitation
​B.​Pressure loss
​C.​Water hammer
​D.​Pressure surge

A

​A.​Cavitation

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29
Q

29.​Which is an indication that a pump is cavitating? (354)
​A.​Pump does not make any working noises
​B.​A decrease in the throttle will decrease discharge pressure
​C.​An increase in the throttle will increase discharge pressure
​D.​Lack of reaction on the pressure gauge to increases in the throttle

A

​D.​Lack of reaction on the pressure gauge to increases in the throttle

30
Q

30.​Which is the first consideration in establishing a drafting operation? (354)
​A.​Pumper size
​B.​Site selection
​C.​Available personnel
​D.​Potential growth of the fire

A

​B.​Site selection

31
Q

31.​Which is the MOST important factor in choosing a draft site? (355)
​A.​Weather conditions
​B.​Accessibility of water
​C.​Type or quality of water
​D.​Amount of water available

A

​D.​Amount of water available

32
Q

32.​In order for a pumper to approach its rated capacity using a traditional strainer, there must be at least _____ of water over the strainer. (355)
​A.​12 inches (300 mm)
​B.​24 inches (600 mm)
​C.​36 inches (900 mm)
​D.​42 inches (1 050 mm)

A

​B.​24 inches (600 mm)

33
Q

33.​How does water temperature affect drafting? (356)
​A.​Hot water affects drafting; cold water has no impact .
​B.​Cold water affects drafting; hot water has no impact.
​C.​Water temperatures have no adverse impact on drafting.
​D.​Water temperatures may adversely impact the ability of the pump to reach capacity.

A

​D.​Water temperatures may adversely impact the ability of the pump to reach capacity.

34
Q

34.​What should be done each time nonpotable water is pumped through an apparatus? (356)
​A.​Nothing needs to be done to the pump and piping system.
​B.​Pump and piping should be thoroughly flushed with fresh water soon afterwards.
​C.​Pump and piping should be drained and allowed to totally dry out before the next use.
​D.​Pump and piping should be thoroughly flushed with special cleaning solution soon afterwards.

A

​B.​Pump and piping should be thoroughly flushed with fresh water soon afterwards.

35
Q

35.​To create an effective fire stream during drafting operations, a lift of no greater than _____ is recommended. (357)
​A.​10 feet (3 m)
​B.​20 feet (6 m)
​C.​30 feet (9 m)
​D.​40 feet (12 m)

A

​B.​20 feet (6 m)

36
Q

36.​After a drafting site has been selected, which is a step in connecting to the pump? (358)
​A.​Connect the intake hose while on the ground.
​B.​Reposition apparatus once all connections are made.
​C.​Engage pump as soon as initial connections are made.
​D.​Couple strainer and required lengths of hose and make them airtight.

A

​D.​Couple strainer and required lengths of hose and make them airtight.

37
Q

37.​When drafting, what should be done when positioning the intake hose if the bottom slopes steeply from the water’s edge? (358)
​A.​Place a roof ladder in the water and lay intake hose on it.
​B.​Suspend strainer off the bottom by tying it to an anchor point.
​C.​Place salvage covers in the water and lay intake hose on top of the covers.
​D.​Place a shovel or other flat metal object on the top to protect the strainer.

A

​A.​Place a roof ladder in the water and lay intake hose on it.

38
Q

38.​When priming the pump and beginning drafting operations, a two-stage pump: (358)
​A.​must have the transfer valve in the series (pressure) position.
​B.​must have the transfer valve in the parallel (volume) position.
​C.​can have the transfer valve in either the series (pressure) or parallel (volume) position.
​D.​must initially have the transfer valve in the series (pressure) position but then switch to the parallel (volume) position.

A

​B.​must have the transfer valve in the parallel (volume) position.

39
Q

39.​If an apparatus features a vacuum-type primer, the engine rpm should be kept: (359)
​A.​below 800 rpm.
​B.​between 1000 and 2000 rpm.
​C.​as high as possible without overtaxing the engine.
​D.​as low as possible without causing the engine to stall.

A

​D.​as low as possible without causing the engine to stall.

40
Q

40.​What is the most common cause of an inability to prime? (359)
​A.​Engine speed (rpm) is too high
​B.​Inexperience of personnel using the equipment
​C.​Equipment used for priming is incompatible or outdated
​D.​An air leak that prevents primer from developing enough vacuum to successfully draft water

A

​D.​An air leak that prevents primer from developing enough vacuum to successfully draft water

41
Q

41.​Which problem is MOST likely to cause an inability to prime? (359)
​A.​Lift is too low
​B.​Engine speed (rpm) is too low
​C.​Engine speed (rpm) is too high
​D.​Excess fluid in the priming reservoir

A

​B.​Engine speed (rpm) is too low

42
Q

42.​After successfully priming the pump, the throttle setting should: (360)
​A.​slowly be decreased before attempting to open any discharges.
​B.​quickly be decreased before attempting to open any discharges.
​C.​slowly be increased before attempting to open any discharges.
​D.​quickly be increased before attempting to open any discharges.

A

​C.​slowly be increased before attempting to open any discharges.

43
Q

43.​Which is the MOST likely problem during drafting if the discharge pressure gauge begins to fluctuate with a corresponding loss of vacuum on the intake gauge? (360)
​A.​Blockage in the pump itself
​B.​Gauge readings are incorrect
​C.​Attempting to exceed capacity of the pump
​D.​Air is coming into the pump along with water

A

​D.​Air is coming into the pump along with water

44
Q

44.​What should be done first when preparing to shut down a drafting operation? (362)
​A.​Completely shut down engine
​B.​Slowly decrease engine speed to idle
​C.​Leave engine in the highest gear possible
​D.​Increase engine speed then quickly decrease engine speed

A

​B.​Slowly decrease engine speed to idle

45
Q

45.​When shutting down a drafting operation, why should the positive displacement primer be operated for several seconds until primer oil or fluid comes out of discharge from the priming pump? (362)
​A.​Ensures primer works efficiently
​B.​Aids in lubrication of priming pump
​C.​Avoids contamination of priming pump
​D.​Ensures fluid is removed from the priming pump

A

​B.​Aids in lubrication of priming pump

46
Q

46.​The automatic water supply for a sprinkler system is designed to supply: (362)
​A.​only one fire sprinkler at any given time.
​B.​all of the fire sprinklers at any given time.
​C.​a majority of the fire sprinklers at any given time.
​D.​only a fraction of total fire sprinklers at any given time.

A

​D.​only a fraction of total fire sprinklers at any given time.

47
Q

47.​When should occupancies with automatic sprinkler systems be identified? (362)
​A.​After initial incident call
​B​During preincident planning
​C.​During initial size-up of the scene
​D.​After incident action plan has been put into action

A

​B​During preincident planning

48
Q

48.​If a sprinkler system is to be supplied at the fire department connection and no specific information is available, the general guideline is to discharge _____ into the FDC. (363)
​A.​50 psi (350 kPa)
​B.​75 psi (525 kPa)
​C.​150 psi (1 050 kPa)
​D.​250 psi (1 750 kPa)

A

​C.​150 psi (1 050 kPa)

49
Q

49.​When supporting standpipe operations, fire attack crews should: (364)
​A.​use both house hose and attack lines.
​B.​avoid using the standpipe unless fire is growing.
​C.​bring attack lines to initiate standpipe operations.
​D.​use the house hose installed at standpipe connection.

A

​C.​bring attack lines to initiate standpipe operations.

50
Q

50.​Wet standpipe systems that contain water under pressure: (364)
​A.​will take at least 3-5 minutes before water flows freely.
​B.​must be charged with water from the fire department pumper.
​C.​may be used as soon as the hoseline is stretched and the valve closed.
​D.​may be used as soon as the hoseline is stretched and the valve opened.

A

​D.​may be used as soon as the hoseline is stretched and the valve opened.

51
Q

51.​Which statement about dry pipe systems is MOST accurate? (364)
​A.​It will take at least 5-10 minutes before water flows freely.
​B.​They may be used as soon as the hoseline is stretched and the valve opened.
​C.​They may be used as soon as the hoseline is stretched and the valve closed.
​D.​They must be charged with water from a source such as the fire department pumper.

A

​D.​They must be charged with water from a source such as the fire department pumper.

52
Q

52.​Friction loss in standpipes is generally: (365)
​A.​large regardless of flow.
​B.​small regardless of flow.
​C.​small unless flow is very large.
​D.​so variable that it cannot be correctly accounted for.

A

​C.​small unless flow is very large.

53
Q

53.​When a dry standpipe system is charged, water will be discharged: (365)
​A.​only in the area of the fire itself.
​B.​at all points regardless of position of valves.
​C.​at all points where caps are off and valve is open.
​D.​at all points where caps are on and valve is closed.

A

​C.​at all points where caps are off and valve is open.

54
Q

54.​What should a driver/operator do immediately upon indication that the water supply or pumping ability may be unattainable or interrupted? (366)
​A.​Notify officer or Incident Commander
​B.​Call for backup pumpers to arrive at the scene
​C.​Wait several minutes and see if the problem corrects itself
​D.​Attempt to correct the problem before notifying anyone

A

​A.​Notify officer or Incident Commander

55
Q

55.​Which is the MOST likely scenario if a supply line that was charged suddenly loses water? (366)
​A.​The supply line has burst.
​B.​Vandals have turned off the water supply.
​C.​The personnel operating the supply line are inexperienced.
​D.​It is just a momentary pressure change and water will return.

A

A.​The supply line has burst.

56
Q

56.​Which is the MOST likely scenario if a supply line loses water but the supply line is intact? (366)
​A.​Vandals have turned off the water supply.
​B.​The hydrant or water main has failed.
​C.​The personnel operating the supply line are inexperienced.
​D.​It is just a momentary pressure change and water will return.

A

B.​The hydrant or water main has failed.

57
Q

1.​From what location is the procedure for making the pump operational performed for most apparatus? (336)
​A.​Cab of the vehicle
​B.​Location varies depending upon incident
​C.​Outside the vehicle near the driver’s door
​D.​Anywhere driver/operator is located with remote controls

A

​A.​Cab of the vehicle

58
Q

2.​What is used to prevent the pump from overheating during fire attack if water is not flowing for an extended period of time? (338)
​A.​Rotary valve
​B.​Piston gear valve
​C.​Inline gated valve
​D.​Booster cooling valve

A

​D.​Booster cooling valve

59
Q

3.​What residual pressure should be maintained on the master intake gauge during pumping operations when operating from a pressurized supply source? (340)
​A.​At least 10 psi (70 kPa)
​B.​At least 20 psi (140 kPa)
​C.​At least 30 psi (210 kPa)
​D.​At least 40 psi (140 kPa)

A

​B.​At least 20 psi (140 kPa)

60
Q

4.​When is residual pressure shown on the intake gauge of a pumper that is connected to a hydrant? (347)
​A.​When a pumper is discharging water
​B.​When a pumper is totally shut down
​C.​When a pumper is not discharging water
​D.​When a pumper is transitioning to another water source

A

​A.​When a pumper is discharging water

61
Q

5.​One indication that a pump is cavitating is that: (354)
​A.​the pressure gauge will rise suddenly and continue rising.
​B.​increases in the throttle cause significant reaction on the pressure gauge.
​C.​the pump itself will become extremely quiet with no apparent sounds at all.
​D.​the pump itself may make noises described as sounding like gravel passing through the pump.

A

​D.​the pump itself may make noises described as sounding like gravel passing through the pump.

62
Q

6.​What should be done if priming has not been achieved within the acceptable time period for a particular situation? (359)
​A.​Mutual aid resources called to the scene
​B.​Wait 5-10 minutes and try priming again
​C.​Priming should continue until a prime is achieved
​D.​Priming attempt should be stopped and the problem traced

A

​D.​Priming attempt should be stopped and the problem traced

63
Q

7.​An inability to prime is MOST likely caused by: (359)
​A.​lift that is too low.
​B.​inexperienced personnel.
​C.​engine speed (rpm) that is too high.
​D.​insufficient fluid in the priming reservoir.

A

​D.​insufficient fluid in the priming reservoir.

64
Q

8.​Where is a driver/operator MOST likely to find suggested discharge pressures for a sprinkler system? (363)
​A.​Printed on a plate at the FDC
​B.​Nearest utility pole to the FDC
​C.​Building entrance layout diagram
​D.​On the sidewalk/concrete near the FDC

A

​A.​Printed on a plate at the FDC

65
Q

9.​When initiating standpipe operations, why should fire attack crews bring attack lines when house hose is installed? (364)
​A.​Attack lines are used alongside the house hose.
​B.​Attack lines are used to supplement the house hose.
​C.​Fire department will have to replace any house hose that they use during operations.
​D.​House hose has not been manufactured or tested to the same standard as fire department hose.

A

​D.​House hose has not been manufactured or tested to the same standard as fire department hose.

66
Q

10.​Which standpipe system must be charged with water from a source such as the fire department pumper? (364)
​A.​Dry pipe systems
​B.​Wet pipe systems
​C.​Combination pipe systems
​D.​Any type of pipe system in an occupancy

A

​A.​Dry pipe systems

67
Q

11.​​Explain the difference between a forward lay and a reverse lay. (341-344)

A

A forward lay involves laying the hose from the fire hydrant to the fire location and a reverse lay involves laying the hose from the fire scene to the water source.

68
Q

12.​During drafting operations, what are the three primary factors that determine friction loss in the intake hose? (352)

A

Diameter and length of the hose
• Intake strainer
• Any adapters in use

69
Q

13.​During drafting operations, what are the main considerations when selecting a drafting site? (355)

A

Amount of water available
• Type or quality of water
• Accessibility of water

70
Q

14.​Who should a driver/operator notify if there is an indication that the water supply or pumping ability may be unattainable or interrupted? (366)

A

Officer or Incident Commander

71
Q

15.​When a supply line that has been charged suddenly loses water during drafting operations, what are some possible causes? (366)

A

Supply line may have burst
• A vehicle may have parked on it
• A hydrant or water main may have failed
• A portable folding tank or tender may need to be replenished

DE STUDY (22 decks)

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