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MDFR DO > TANKER > Flashcards

TANKER Flashcards

1
Q

Which of the following statements about a diesel particulate filter (DPF) is MOST accurate?

A

A DPF collects particulates from the exhaust stream and burns them more completely.

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2
Q

Which of the following statements about driving regulations is MOST accurate?

A

Driver/operators are subject to all traffic regulations under nonemergency conditions.

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3
Q

Which of the following is MSOT likely a concern for weight transfer when driving an apparatus?

A

Water tanks improperly baffled and partially filled with liquid

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4
Q

Which of the following statements about road tests is MOST accurate?

A

Local jurisdictions may develop a road test route that will traverse any conditions particular to the area.

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5
Q

Which of the following statements about operating on top of apparatus is MOST accurate?

A

Always have a second person present.

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6
Q

When in an acceleration skid, the driver/operator should:

A

not apply brakes, but should ease off the accelerator and straighten out the front wheels as the vehicle begins to respond.

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7
Q

Which of the following can make steering axle weight too light to steer safely?

A

Under-loaded front axles

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8
Q

Which of the following statements about mechanical failure during travel is MOST accurate?

A

It may be an immediate occurrence and give no warning.

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9
Q

When determining a route to take, driver/operators should plot routes that avoid:

A

low overpasses.

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10
Q

In the United States, basic requirements for licensing a driver are established by the:

A

Department of Transportation.

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11
Q

At intersections with a red light, apparatus should:

A

be brought to a complete stop before proceeding.

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12
Q

The most common place for a vehicle collision to occur is

A

an intersection.

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13
Q

Before the apparatus is put into motion, all riders must be seated within the cab or body and

A

wearing their seat belts.

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14
Q

Which of the following statements about hydraulic fluids is MOST accurate?

A

Some hydraulic fluids are known to be toxic to human tissue.

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15
Q

Which of the following is a hand signal for stopping

A

Cross both forearms into a large X

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16
Q

On apparatus equipped with a diesel particulate filter (DPF), which of the following lights up to indicate that the DPF is loading up with soot?

A

DPF indicator

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17
Q

Which of the following generally accounts for a significant percentage of all damage repair costs for a fire department?

A

Backing accidents

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18
Q

Which of the following would MOST likely be exempt when emergency vehicles have their audible and visual warning lights on?

A

Speed limits

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19
Q

When driving downhill, which of the following should be done to prevent engine damage?

A

Lower downhill speed to lower than maximum rpm.

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20
Q

In most jurisdictions, when civilian drivers encounter emergency vehicles responding with warning lights activated and audible devices sounding, they must

A

pull to the right, stop, clear intersections, and remain motionless.

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21
Q

Which of the following statements about excessive speed and braking is MOST accurate?

A

Excessive speed can cause difficulties when braking.

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22
Q

When responding to emergencies, apparatus should:

A

turn on headlights as part of the emergency response.

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23
Q

How do drivers establish visual lead time?

A

By scanning the path of travel far enough ahead based on their speed

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24
Q

To maintain control when in an acceleration skid, the driver/operator should not apply brakes, but should instead ease off of the accelerator, and:

A

straighten out the front wheels as the vehicle begins to respond.

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25
Q

Which of the following can cause poor traction?

A

Too little weight on driving axles

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26
Q

Which of the following statements about driver/operator training is MOST accurate?

A

All fire departments must establish and maintain a thorough training program.

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27
Q

What should the driver/operator do if he or she loses sight of the spotter during backing?

A

Stop and set the parking brake.

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28
Q

An apparatus equipped with Selective Catalyst Reductant (SCR) will have a tank in addition to a fuel tank that must be filled with Diesel Exhaust Fluid (DEF) and the DEF tank should be

A

topped off every time the apparatus is fueled.

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29
Q

After the driver/operator perceives the need to stop the vehicle, the distance the apparatus travels while the driver/operator transfers his or her foot from the accelerator to the brake pedal is

A

reaction distance.

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30
Q

When loading fire hose while driving the apparatus, the safety observer to the operation:

A

must be a member, other than driver/operator and the firefighters loading the hose.

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31
Q

Apparatus equipped with a diesel particulate filter (DPF) will have

A

very clean exhaust emissions and no black smoke.

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32
Q

Which ability or skill is necessary to understand maps, dispatch instructions, and preincident plans?

A

Reading skills

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33
Q

When preparing to start the apparatus, whether for emergency response or a routine trip, the driver/operator must first know the destination and:

A

route of travel.

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34
Q

Which of the following statements about shutting down a hot engine is MOST accurate?

A

Usually an idling time of three to five minutes is sufficient before shutting down.

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35
Q

Which of the following is a guideline for apparatus rider safety?

A

Never allow firefighters to ride on the tailboard, front bumper, or running boards of any moving apparatus.

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36
Q

During the process of drafting, the pressure in the intake hose and pump:

A

drops lower than atmospheric pressure.

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37
Q

Which of the following refers to the greatest height to which any amount of water may be raised through an intake hose to the pump?

A

Maximum lift

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38
Q

Which of the following is a reason that driver/operators may need to determine the amount of water discharged from a solid stream nozzle?

A

Test the water supply when a nozzle is attached to a hydrant

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39
Q

Which of the following water sources may be placed within strategic locations by some suburban and urban jurisdictions as a backup water supply system?

A

Cisterns

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40
Q

Which of the following refers to the height a column of water may be lifted in sufficient quantity to provide a reliable fire flow?

A

Dependable lift

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41
Q

Access to a natural water source is MOST likely to be impeded by:

A

the inability to position pumper close enough to the water.

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42
Q

Which of the following water sources often have improved roads that lead to the water’s edge and may have dry hydrants installed for facility personnel or firefighters to use for water supply?

A

Ground reservoirs

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43
Q

Which manner of producing fog streams occurs by deflecting water around an inside circular stem in the nozzle?

A

Periphery-deflected streams

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44
Q

Which of the following statements about lift is MOST accurate?

A

A total vacuum is impossible to create using fire service equipment.

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45
Q

Which of the following water sources may have open canals running through a property that may feature several sites suitable for drafting by fire department pumpers?

A

Agricultural irrigation systems

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46
Q

Which of the following is the fire department MOST likely to require the owner to equip with appropriate connection points for fire department use?

A

Private water storage tank

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47
Q

When at draft, the sum of the pump discharge pressure and intake pressure correction that takes into account friction loss in the intake hose and height of the lift is called:

A

net pump discharge pressure.

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48
Q

Which of the following situations is MOST likely to make it necessary to position portable pumps at the supply source during drafting operations?

A

When fire apparatus cannot make required approach

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49
Q

Which of the following generally supply water via open canals and portable pipes?

A

Agricultural irrigation systems

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50
Q

Theoretical lift can be calculated by determining the actual atmospheric pressure of an area and:

A

multiplying that number by the water’s pressure per square foot (kPa) while it is in the intake hose.

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51
Q

As the point of maximum lift is approached, the volume of water available for the fire pump:

A

may be too low to be of value in fire suppression.

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52
Q

After factoring in surrounding atmospheric pressure and friction loss in the intake hose, every fire pump operating properly should have a dependable lift of:

A

at least 14.7 feet (4.5 m).

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53
Q

All firefighters working in close proximity to bodies of water must wear personal flotation devices and use safety lines:

A

regardless of the assumed depth.

54
Q

In most circumstances, maximum lift is approximately:

A

25 feet (7.5 m).

55
Q

Which of the following may be equipped with connections similar to a dry hydrant for quick fire department hook-ups?

A

Large indoor or outdoor pools

56
Q

When drafting, water is forced in and continues to rise until the pump is full of water or:

A

pressure within the pump and intake hose equals atmospheric pressure.

57
Q

Lift can be described as the difference in elevation between the surface of the static water supply and the:

A

center of the pump intake.

58
Q

The water supply in a typical residential swimming pool:

A

may contain adequate water supply for a fire in a single family dwelling.

59
Q

During the process of drafting, which of the following results in water being forced into the hose and pump because of a partial vacuum created in the pump?

A

Pressure in the intake hose and pump drops to lower than atmospheric pressure.

60
Q

What do some jurisdictions do to help avoid problems with silt and debris?

A

Install dry hydrants at favorable drafting locations

61
Q

Which of the following is an underground water storage receptacle usually found in an area not serviced by a hydrant system?

A

Cistern

62
Q

When providing flow required to reach the capacity of the pumping apparatus, floating strainers may be used for water as shallow as:

A

1 foot (300 mm)

63
Q

The height that a column of water may be lifted in sufficient quantity to provide a reliable fire flow is called:

A

dependable lift.

64
Q

What water depth is generally considered minimum around a barrel-type strainer?

A

2 feet (600 mm)

65
Q

Which of the following typically contains many millions of gallons (liters) of water and may be found on large commercial or industrial properties?

A

Ground reservoir

66
Q

Which of the following relay methods requires no adapters or other appliances to connect intake hoses in the system?

A

Open relay

67
Q

Which of the following valves opens and dumps excess pressure/water until water is entering the pump at the correct pressure?

A

Pressure relief valves

68
Q

Which of the following is placed along the length of a supply hose and permits a pumper to connect to the valve to boost pressure in the hose?

A

Inline relay valves

69
Q

Which of the following should be the first apparatus discontinued when relay operations are no longer needed?

A

Pumpers at the fire scene

70
Q

The pumper that receives water from the source pumper, raises the pressure, and then supplies water to the next apparatus is the:

A

relay pumper.

71
Q

Which of the following statements about pressure during relay pumping operations for the attack pumper is MOST accurate?

A

Driver/operator should expect small variations in pressure.

72
Q

As a relay pumper, it is advisable for driver/operators to maintain an intake pressure of:

A

20 to 30 psi (140 to 210 kPa).

73
Q

Centrifugal pumps are rated to pump at their maximum volume capacity at:

A

150 psi (1 050 kPa) at draft.

74
Q

The factor that MOST determines the need for relay operations is:

A

the distance between the incident scene and the water source.

75
Q

The pumper that takes water from a hydrant or static source at the beginning of a relay operation is the:

A

water supply pumper.

76
Q

Which of the following should be done to prevent water hammer?

A

Close all valves slowly

77
Q

Which of the following should be the pumper with the largest pumping capacity?

A

Water supply pumper

78
Q

Which of the following statements about elevation pressure in relay operations is MOST accurate?

A

Elevation pressure is not affected by the amount of water being moved, only by the topography.

79
Q

Placing additional pumpers in the system will increase flow during a relay operation because it shortens the length of hose each pumper must supply and allows pumpers to:

A

operate at lower pressures and maximum flows within the relay operation.

80
Q

The overall capacity of the relay system is determined by the:

A

smallest pump and the smallest diameter of hose used in the relay.

81
Q

Which of the following allow later arriving pumpers to tie into the relay and boost pressure and volume after it has already started flowing, without interrupting the water supply?

A

Inline relay valves

82
Q

Which of the following may be of smaller capacity due to its ability to use acquired energy of previous pumpers in the relay?

A

Relay pumper

83
Q

Which of the following is a characteristic of the open relay method?

A

Requires no adapters or other appliances to connect intake hoses in the system

84
Q

When drafting from a static source, the source pumper:

A

may need to develop a higher pump discharge pressure than other pumpers in the relay operation.

85
Q

Which of the following takes water from a hydrant or static source at the beginning of a relay operation?

A

Water supply pumper

86
Q

The driver/operator of the attack pumper should not attempt to correct minor fluctuations as long as the intake pressure:

A

does not drop below 20 psi (140 kPa).

87
Q

As a relay pumper, it is advisable for driver/operators to maintain an intake pressure of:

A

20 to 30 psi (140 to 210 kPa).

88
Q

When medium diameter hose (MDH) is used in relay operations, generally:

A

multiple hoselines are laid.

89
Q

Which of the following receives water from the source pumper, raises the pressure, and supplies water to the next apparatus?

A

Relay pumper

90
Q

Apparatus equipped with pressure governors should be set in:

A

pressure mode when acting as the attack pumper and rpm mode while working as a relay pumper.

91
Q

Which of the following is responsible for supplying attack lines and appliances required for fire suppression?

A

Fire attack pumper

92
Q

Many screw-on intake pressure relief valves are also equipped with a gate valve that allows the:

A

water supply to the pump to be shut off.

93
Q

Which of the following BEST describes the function of bleeder valves?

A

Allow air to bleed off as incoming supply hose is charged

94
Q

When relay pumpers are equipped with an adjustable intake relief valve, one guideline is that it should be set to:

A

10 psi (70 kPa) above the discharge pressure of the previous pumper in the relay.

95
Q

Which of the following can be done if the amount of flow through a relay operation needs to be increased?

A

Increase the diameter of the supply hose or the number of hoselines

96
Q

A water supply pumper located at the water source is generally referred to as a(an):

A

fill site pumper.

97
Q

During portable tank operation, incidents that require a flow rate in excess of 300 gpm (1 200 L/min) are best served by:

A

multiple portable tank operations.

98
Q

Which of the following is the optimum travel route for a water shuttle circuit on a significant grade?

A 
A circular travel route with empty tenders traveling uphill
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Question text
99
Q

The success of a water shuttle operation depends on:

A

its efficiency.

100
Q

Which of the following is part of the performance evaluation of water tenders?

A

The tender’s drive-train capabilities

101
Q

The decision of where to position the water tender at the fill site should balance the minimum amount of hose required from the fill site pumper with:

A

a position that allows the tender to enter and exit without having to back up or turn around.

102
Q

Any portable tank, regardless of type, should be set up on a surface that is as level as possible and have a capacity at least _____ larger than the water tank on the apparatus that will supply it.

A

500 gallons (2 000 L)

103
Q

What is a self-supporting water tank?

A

A frameless tank consisting of a large bladder with a floating collar around the opening

104
Q

Which of the following is the BEST time to make decisions regarding setting up a water shuttle for specific geographical areas within a jurisdiction?

A

During preincident planning

105
Q

Which of the following statements about the fill site is MOST accurate?

A

The most suitable site to fill the flow requirements is not always the closest site.

106
Q

In accordance with NFPA® 1901, water tenders must be designed to be filled at a rate of at least:

A

1,000 gpm (4 000 L/min).

107
Q

Which of the following would provide the BEST dump site location?

A

A site where tenders can complete their water shuttle circuit without having to turn around

108
Q

The dump site operating method that involves positioning a large water tender immediately adjacent to the attack pumper is called:

A

nurse tender operations.

109
Q

There are _____ basic methods for calculating a flow rate for a specific tender.

A

two

110
Q

What do the “make and break” firefighters do?

A

Establish and remove connections between the water source and the tender

111
Q

What is the goal of a portable multi-tank operation?

A

Keep the tank from which the attack pumper is drafting full at all times

112
Q

After the onboard water tank is full, what is the next step in the fill operation?

A

The fill site personnel should slowly close the valve(s) on the gate or manifold.

113
Q

Which of the following may increase the options available for using static water supply at many incidents?

A

Portable pumps

114
Q

Which of the following is an advantage provided by vacuum tenders?

A

A vacuum tender can self-fill from a static water source at a rate of up to 2,000 gpm (8 000 L/min).

115
Q

In the formulas originally developed by the Insurance Services Office (ISO), what factor is built into the “travel time” formula?

A

Acceleration and deceleration times as the vehicle approaches the fill and dump sites

116
Q

Which of the following maintains certain criteria for determining the proper specifications for water tender apparatus?

A

Each individual jurisdiction

117
Q

Which of the following would make the BEST dump site location to allow continual forward movement?

A

A large, nearby parking lot

118
Q

Successful water shuttle operations are BEST achieved by:

A

using efficient filling and dumping operations.

119
Q

The Insurance Services Office (ISO) formula uses _____ of a tender’s total tank capacity to account for water lost or undischarged and remaining in the tank after the dump valve is closed.

A

90 percent

120
Q

At the fill site, _____ firefighter(s) should be assigned to maneuver and connect each fill line that is laid out.

A

one

121
Q

Another method of calculating a flow rate for a specific tender rates the water supply performance of fire departments that protect rural areas and measures data by:

A

using a series of formulas originally developed by the Insurance Services Office (ISO).

122
Q

Which of the following statements BEST identifies when an overhead pipe should be used during water tender top-fill procedures?

A

When there is no other way of filling through the top opening

123
Q

The goal of the fill site is BEST described as:

A

loading tenders as safely and efficiently as possible.

124
Q

During portable water tank operations, once a tank is positioned, a _____ deploys a hard intake hose with a low-level strainer into the tank.

A

dump site pumper

125
Q

Any portable tank, regardless of type, should be set up on a surface that is as level as possible and have a capacity at least _____ larger than the water tank on the apparatus that will supply it.

A

500 gallons (2 000 L)

126
Q

One method of calculating a flow rate for a specific tender relies on actual field tests conducted under realistic water shuttle conditions and measures the data by:

A

dividing the amount of water the tender dumped during a trial run by the time the round trip took.

127
Q

Which of the following statements about using large diameter hose during a fill operation is MOST accurate?

A

It may actually provide little advantage.

128
Q

The MOST efficient way to transfer water between portable tanks is through the use of a(an):

A

jet siphon.

129
Q

With the exception of operations that feature a vacuum tanker or the use of a hydrant, most water shuttles require at least _____ pumpers for water supply.

A

two

130
Q

What is the MOST advisable method of addressing safety hazards such as blind curves and intersections on a water shuttle route?

A

Have police officers or fire police control traffic at these points.

MDFR DO (3 decks)

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