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Flashcards in Pump Operators Book Deck (397):
1

For pumps larger than 750 gpm, standard pump capacities are found in increments of

250 GPM

2

NFPA 1901, specifies that the minimum pump capacity for automotive fire apparatus is

750 GPM

3

Fire apparatus are classified according to the _________ for which they are designed.

Functions

4

NFPA 1582 recommends rejecting any firefighter candidate who has a hearing loss of ______ decibels or more at frequencies of _____, _____, _____ Hz in the unaided ear.

40, 500-1000-2000

5

NFPA 1582, requires that firefighters have a corrected far visual acuity of ________ with contact lenses or spectacles.

20/40

6

Municipal fire department pumpers rarely have pump capacities exceeding

2,000 gpm

7

Industrial fire pumpers frequently have pump capacities in excess of

2,000 gpm

8

_______ feature all the standard engine company equipment but also carry a larger than standard amount of rescue and extrication equipment.

Rescue pumpers

9

Class A

Ordinary combustibles

10

Class B

Flammable and combustible liquids and gases

11

Most INDUSTRIAL foam pumpers are primarily intended to produce large quantities of foam solution to attack Class ___ fires and suppress vapors in spills.

B

12

Most INDUSTRIAL foam pumpers have large foam concentrate tanks on board. These tanks range from _____ to _____ gallons.

500 to 1,000

13

Onboard foam tanks can be filled from ______ gallon (20 L) containers.

5

14

The most common size foam tanks for MUNICIPAL fire apparatus range from ____ to ______ gallons (80 to 400 L).

20 to 100

15

Elevating water devices typically range in height from _____ to ______ feet.

50 to 75

16

Manufacturers and FD typically use two categorial descriptions for initial attack fire apparatus:

minipumpers & midipumpers

17

Most minimpumpers have pumps with a capacity of no larger than _____ gpm, although some may have pumps rated up to _______ gpm.

500 , 1,000

18

Midipumpers also called _________

interface engines

19

Midipumpers are built on a chassis usually over _______ pounds.

12,000

20

The main difference between a midipumper and a minipumper are:

size, pump capacity, and the amount of equipment carried.

21

Midipumpers routinely are equipped with pumps as large as ______ gpm.

1,000

22

__________ known as tenders or tankers, are widely used to transport water to areas beyond a water system or to areas where water supply is inadequate.

Mobile water supply apparatus

23

According to NFPA 1901, the apparatus must carry at least _______ gallons to be considered a mobile water supply apparatus.

1,000

24

The weight distribution and load requirements, pertaining to water supply apparatus, generally limit tank capacity to _______ gallons or less for single rear-axle vehicles.

1,500

25

Apparatus designed to perform the functions of both pumper and mobile water supply apparatus are sometimes called _______ or ________.

tactical tenders or attack tenders

26

The majority of wild land fire apparatus, also known as brush trucks, brush breakers or booster apparatus, usually have pump capacities and water tank sizes of less than _____ gallons.

500

27

Most wildland fire vehicles carry booster hose, forestry hose, or small diameter attack lines (typically _____ inch and _______ inch

1-inch and 1 1/2 inch

28

Booster tanks for wildland apparatus vary from as little as _____ gallons to in excess of _______ gallons.

20 to 1,000

29

The ICS, as defined by NIMS, categorizes pumping apparatus (including water tenders) by ________. This method is called ________.

capability. apparatus typing.

30

Fire boats have been built to deliver as much as _________ gpm.

26,000

31

Apparatus equipped with an aerial device, ground ladders, fire pump, water tank, and fire hose are commonly referred to as _______.

quints

32

NFPA 1901 specifies that the minimum pump capacity for an aerial apparatus shall be _____ gpm at ______ psi.

250 , 150

33

Departments that want the aerial apparatus to have the same capabilities as a standard engine company may specify pumps as large as _______ gpm.

2,000

34

Typically, on ladder tenders, the capacity of the water tank does not exceed ________ gallons and the pumps do not produce more than about ______ gpm.

300, 300

35

Engine tenders generally have a pump with a rated capacity of _____ gpm.

500

36

The _______ is a step-up transformer that converts the vehicle's 12- or 24-volt DC current into 110- or 200-volt AC current.

inverter

37

Inverters are generally capable of providing ______ watts or more of electric power.

1,500

38

________ are the most common power source used for emergency services.

Generators

39

Portable generators are designed with a variety of power capabilities, with _______ watts of power being the largest.

5,000

40

Vehicle mounted generators generally have 110- and 220-volt capabilities; capacities up to _______ watts.

12,000

41

______ generators usually provide more power than portables.

Fixed

42

Rescue vehicles commonly have larger generators than pumpers. Capacities of _______ watts or more are common.

50,000

43

Lighting equipment can be divided into two categories:

portable and fixed

44

Portable lights range from _____ to ______ watts.

300 to 1,000

45

____ lights are mounted to the vehicle, and their main fucntion is to provide overall lighting of the emergency scene.

Fixed

46

The most common size cable is a :

12-gauge, 3-wire type

47

The most commonly used tools are:

Powered hydraulic extrication tools

48

There are four basic types of hydraulic tools used by the fire rescue service:

spreaders, shears, combination spreader/shears, and extension rams

49

Most hydraulic power units are not capable of operating the tool at full speed when the hose length between the pump and tool exceeds:

100 feet

50

______, as used here, means keeping apparatus in a state of usefulness or readiness.

Maintance

51

______ means to restore or replace that which has become inoperable.

Repair

52

_______ the exterior of the apparatus is the most commonly performed fucntion.

Washing

53

During the first ______ months after an apparatus is received, while the paint and protective coating are new and unseasoned, the vehcile should be washed frequently with cold water to harden the paint and keep it from spotting.

Six

54

In reference to washing the apparatus, the water pressure should be set so that the stream from the end of the hose is no more than_____ foot in length.

1

55

If apparatus require waxes or polishes, they generally should not be applied until the paint is at least ____ months old.

6

56

The first portion of the vehicle specifically checked should be the _____ (driver's) side of the front, or cab of the vehicle.

left

57

The speedometer should be at or very near _____ with the truck parked.

zero

58

As a rule of thumb, it is generally best to keep the fuel tank at least ________ full at all times.

three-quarters

59

Appropriate hearing protection should be worn if any personnel will be exposed to noise levels in excess of ___ decibels.

90

60

The _______ turns various lights on at specified intervals so that the start-up electrical load for all of the devices does not occur at the same time.

load sequencer

61

The _______ "watches" the system for added electrical loads that threaten to overload the system.

load monitor

62

When an overload condition occurs, the load monitor will shut down less important electrical equipment to prevent the overload. This is referred to as __________.

load shedding

63

______ is the distance that the pedal must be pushed before the throw-out bearing actually contacts the clutch release fingers.

Free play

64

In general, steering wheel play should be no more than about ____ degrees in either direction.

10

65

An NFPA 1901 braking test requires that new apparatus be brought to a complete stop from a speed of _____ mph in a distance not to exceed _____ feet.

20 mph , 35 feet

66

The parking brake should be capable of holding the appratus on a grade of up to _____ percent.

20

67

Apparatus with air brakes are to be equipped with an air pressure protection valve that prevents the air horn from being operated when the pressure in the air reservoir drops below ____ psi.

80

68

To test the road brakes, allow the apparatus to move forward at about ____ mph. Should come to a complete stop at ____ ft.

5, 20

69

Switches on battery charger should be in the ____ position when not in use.

OFF

70

The starter controls should be operated in intervals of no more than _____ seconds, with a rest of _____ seconds between each try if the vehicle does not start sooner.

30 , 60

71

If the oil pressure gauge does not indicate any reasonable amount of oil pressure within ____ to ____ seconds of starting the apparatus, stop the engine immediately and have the lubricating system checked by a trained mechanic.

5 to 10

72

When driving downhill, select a lower gear ______ starting downhill.

before

73

_____ occurs when the throttle is applied while the transmission is in too high a gear for a given set of conditions.

Lugging

74

Long idling periods can result in the use of _____ gallon (2 L) of fuel per hour.

1/2

75

When the engine must be left idling for an extended period of time because of extremely cold weather or during floodlight operations, set it to idle at ______ to ______ rpm rather than lower speeds.

900 to 1,100

76

Most apparatus accidents occur at _______.

intersections

77

The ________ is the sum of the driver/operator's reaction distance and the vehicle's braking distance.

total stopping distance

78

Driver/operator _______ is the distance a vehicle travels while a driver is transferring the foot from the accelerator to the brake pedal after perceiving the need for stopping.

reaction distance

79

The ________ is the distance the vehicle travels from the time the brakes are applied until the apparatus comes to a complete stop.

braking distance

80

Apparatus should be driven in the _____ lane on city streets.

fast

81

A siren operating on an emergency vehicle moving at 40 mph can project ______ feet in front of the vehcile.

300

82

At a speed of 60 mph however, the siren is only audible _____ feet or less in front of the vehicle.

12

83

When more than one emergency vehicle is responding along the same route, units should travel at least _____ to _____ feet.

300 to 500

84

Pertaining to the Alley Dock exercise, the boundary lines for the restricted area should be ______ feet wide, similar to curb-to-curb distance.

40

85

_____ is always the first tatctical priority at any fire incident.

Life safety

86

Apparatus should be positioned ______ of the fire.

upwind

87

Another important consideration when determining a good position for attack pumpers is the condition of the _______ and the potential for a _______.

fire building , structural collapse

88

The collapse zone is equal to at least ______ times the height of the building.

one and one-half

89

Ornamental stars indicate a high _______ potential.

collapse

90

If the building is less than five stories tall, engine companies are positioned on the side of the street _____ to the building and aerials are positioned ______ of the engine.

closest , outboard

91

If the building is higher than five stories, the engines take the _____ position and the aerials are positioned next to the building.

outside

92

Minimizing _________ provides better discharge capabilities and should be a primary consideration.

lift distances

93

In most jurisdictions, the most common water supply source is a _________.

fire hydrant

94

The preferred type of hose for connection to a fire hydrant is __________.

large diameter intake hose

95

Intake hose sections are commonly ____ to _____ feet.

10 to 50

96

A good way to minimize kinks in soft intake hose is to put ________ in the hose when making the connection between the hydrant and the pumper.

two full twists

97

When using front or rear intake connections, the vehicle should be aimed or angled in the direction of the hydrant. This angle should be _______ degrees or less.

45

98

The main disadvantage of connecting to the 2 1/2 inch outlet is that it _____________.

limits the amount of water that can be supplied.

99

In a tandem pumping operation it is possible to pump water at a __________ pressure than the hose can withstand.

greater

100

To set up for tandem pumping, the two engines may be positioned as much as _____ feet (90 m) apart.

300

101

The two most common functions for wildland fire apparatus are _______ and _________.

providing structural protection and making a direct attack on the fire.

102

After life safety, the highest priority for most wild land fire fighting operations is the _________.

protection of structures that are exposed to the fire.

103

Wildland engines must remain _______.

mobile

104

_______ should precede wildland engines when driving through smoke.

Spotters

105

When apparatus is used in mobile attack, hoselines should be kept as ______ as possible.

short

106

Pertaining to wildland firefighting, it is safest to operate in the ________ (burned area).

black

107

The command post should afford a view of ______ sides of the building.

two

108

Two types of equipment are used to refill SCBA cylinders on the scene:

cascade systems and breathing air compressors, or combination thereof.

109

The two primary types of EMS vehicles that may respond to fire scenes are :

rapid response units (non transport) and ambulances (transport).

110

_______ staging my be used on any emergency response where two or more companies are dispatched.

Level I

111

______ staging is used when numerous emergency vehicles will be responding to the same incident.

Level II

112

Also consider positioning additional apparatus _____ to ______ behind the shielding apparatus to act as an additional barrier between firefighters and the flow of traffic.

150 to 200

113

The ________ is an area surrounding the incident that is closest to the release and may have been contaminated by the released material.

hot zone (a.k.a restricted zone, exclusion zone, or red zone)

114

The ________ is an area abutting the hot zone and extending to the cold zone.

warm zone (aka contamination reduction zone, limited-access zone, or yellow zone)

115

Decontamination usually takes place within a corridor located in the ______ zone.

warm

116

More than ____ percent of the calls to which most fire departments respond are emergency medical incidents.

60

117

______ is a compound of hydrogen and oxygen formed when two hydrogen atoms combine with one oxygen atom.

Water

118

Below 32*F water converts to a solid state of matter called ____.

ice

119

Above 212*F, water converts into a gas called _____ or _____.

water vapor or steam

120

Water's _______, or its weight per unit of volume, is measured in pounds per cubic foot (kg/L).

density

121

Water is heaviest close to its _____ point.

freezing

122

Water is lightest close to its _____ point.

boiling

123

For fire protection purposes, ordinary fresh water is generally considered to weigh _____ lb/ft3 or _____ lb/gal.

62.5 or 8.33

124

The primary way water extinguishes fire is by _____, or absorbing heat from the fire.

cooling

125

Another way is by _____ (excluding oxygen)

smothering

126

As an extinguishing agent, water depends on the following:

-Specific Heat
-Latent Heat of Vaporization
-Exposed Surface Area
-Specific Gravity

127

_______ is a measure of the heat-absorbing capacity of a substance.

Specific heat

128

Amounts of heat transfer are measured in ______ or ______.

British thermal units (Btu) or in joules (J).

129

The _____, also a unit of work, has taken place of he calorie in the SI (International System of Units) heat measurement.

joule

130

1 calorie = ______ joules

4.19

131

It takes _____ times as much heat to raise the temperature of one pound of water 1 degree F as it does an equal amount of carbon dioxide.

five

132

The _______ is the quantity of heat absorbed by a substance when it changes from a liquid to a vapor.

latent heat of vaporization

133

At sea level, water begins to boil or vaporize at ______ *F

212

134

Each pound of water requires approximately _____ Btu of additional heat to completely convert into steam.

970

135

A gallon of water weighs ______ pounds.

8.33

136

The amount of heat a combustible object can produce depends upon the ______ from which it is composed.

material

137

The speed with which water absorbs heat ______ in proportion to the water surface exposed to the heat.

increases

138

At 212*F water expands approximately ______ times its original volume.

1,700

139

Water converted to steam expands ______ times.

1,700

140

______ is the tendency of a liquid to possess internal resistance to flow.

Viscosity

141

The density of liquids in relation to water is known as ________.

specific gravity

142

Water is given a value of ____.

1

143

Liquids with a specific gravity less than 1 are _______ than water and therefore float on water.

lighter

144

Most flammable liquids have a specific gravity of ______ 1.

less than

145

Those with a specific gravity greater than 1 are ______ than water and sink to the bottom.

heavier

146

____ is defined as force per unit.

Pressure

147

The weight of 1 cubic foot of water is approximately ______ pounds.

62.5

148

The speed at which fluid travels is often referred to as _______.

velocity

149

First Principle: Fluid pressure is perpendicular to any surface on which it acts.

True

150

Second Principle: Fluid pressure at a point in a fluid at rest is the same intensity in all directions.

True

151

Third Principle: Pressure applied to a confined fluid from without is transmitted equally in all directions.

True

152

Fourth Principle: The pressure of a liquid in an open vessel is proportional to its depth.

True

153

At sea level, the atmosphere exerts a pressure of _____ psi, which is considered standard atmospheric pressure.

14.7

154

Any pressure less than atmospheric pressure is called ______.

vacuum

155

Absolute zero pressure is called a _______.

perfect vacuum

156

______ in the fire service refers to the height of a water supply above the discharge orifice.

Head

157

The water flow definition of ________ is stored potential energy available to force water through pipe, fittings, fire hose, and adapters.

static pressure

158

_____ means at rest of without motion.

Static

159

The pressure of a fluid on the bottom of a container is ________ of the containers shape.

independent

160

______ is that pressure found in a water distribution system during normal consumption demands.

Normal operating pressure

161

_____ is that part of the total available pressure not used to overcome friction lsos or gravity while forcing water through pipe, fittings, fire hose, and adapters.

Residual pressure

162

_______ is that forward velocity pressure at a discharge opening while water is flowing.

Flow pressure

163

_____ refers to the center line of the pump or the bottom of a static water supply source above or below ground level.

Elevation

164

_____ is the position of an object above or below sea level.

Altitude

165

When the nozzle is above the pump, there is a pressure _____.

loss

166

When the nozzle is below the pump, there is a pressure _____.

gain

167

Both pressuer loss and presure gain are referred to as ______.

elevation pressure.

168

Above sea level, atmospheric pressure decreases approximately ____ psi for every _____ feet.

0.5 , 1000

169

The common term for pressure loss due to friction is simply ______.

friction loss

170

The difference in pressure in a fire hose between a nozzle and a pumper is a good example of _______.

friction loss

171

With all other variables the same, the friction loss varies with the _______ of the hose.

length

172

When the diameter of the hose doubles, the area of the hose opening increases approximately _____ times.

four

173

When a nozzle is attached to the end of the hose, the volume of water flowing is _______.

decreased

174

Realistically, hose larger than ____ inches in diameter cannot be used for handlines.

3

175

The primary water supply can be obtained from either _______ or _______.

surface water or groundwater.

176

There are three methods of moving water in a system:

Direct pumping system
Gravity system
Combinations system

177

_______ systems use one or more pumps that take wate from the primary source and discharge it through the filtration and treatment proceses.

Direct pumping systems

178

A _______ uses a primary water source located at a higher elevation than the distribution system.

gravity system

179

Most communities use a combination of the ______ and ______ systems.

direct pumping and gravity

180

A _____ system is used where the water source is elevated.

gravity

181

A fire hydrant taht receives water from only one direction is known as a ______.

dead-end hyrdrant

182

When a fire hydrant receives water from two or more directions, it is said to have a _______ or ______.

circulating feed or looped line

183

Large pipes (mains), with relatively widespread spacing, that convey large quantities of water to various points of the system for local distribution to teh smaller mains:

Primary feeders

184

Network of intermediate sized pipes that reinforce the grid within the various loops of the primary feeder system and aid the concentration of the required fire flow at any point:

Seondary feeders

185

Grid arrangements of smaller mains serving individual fire hydrants and blocks of consumers:

Distributors

186

In residential areas, the recommended size for fire hydrant supply mains is at least _____ inches in diameter.

6

187

In the business and industrial districts, the miniumum recommended size is an _____ inch main with cross-connecting mains every _____ feet.

8 , 600

188

At speeds above____ mph, an emergency vehicle may "out-run" the effective range of its audible warning device.

50

189

The funtion of a _____ in a water distribution system is to provide a means for controlling the flow of water through the distribution piping.

valve

190

Valves for water systems are broadly divided into _____ and _______ types.

indicating and nonindicating

191

Two common indicator valves are the ______ and the _____ valve.

PIV and OS&Y

192

The _____ has a yoke on the outside with a threaded stem that controls the gate's opening for closing

OS&Y

193

The valve disk rotates ____ degrees from the fully open to the tight-shut position.

90

194

_______ valves are common in private water supply systems.

Butterfly

195

The _______ is the average of the total amount of water used in a water distribution system over the period of one year.

average daily consumption (ADC)

196

The ______ is the maximum total amount of water that was used during any 24-hour interval within a 3-year period.

maximum daily consumption (MDC)

197

The ______ is the maximum amount of water used in any 1-hour interval over the course of a day.

peak hourly consumption (PHC)

198

The maximum daily consumption is normally about ______ times the average daily consumption.

one and one-half

199

In general, the private water supply system exists for one ofthe three following purposes:

-To provide water strictly for fire protection
-To provide water for sanitary and fire protection
-To provide water for fire protection and manufacturing processes.

200

Most commonly, private water supply systems receive their water from a _____ water supply system.

municipal

201

A ______ can be defiend as a stream of water or extinguishing agent after it leaves a nozzle until it reaches the desired point.

fire stream

202

The fire service utilizes three basic types of fire streams:

-solid
-fog
-broken

203

A ______ is a fire stream produced from a fixed orifice, smoothbore nozzle.

solid stream

204

The nozzle ______ and the _______ of the discharge opening determine the flow and stream reach from a solid stream nozzle.

pressure, size

205

When solid stream nozzles are used on handlines, they should be operated at _____ psi.

50

206

A solid stream master stream device should be operated at ____ psi.

80

207

The line bounding a rounded surface; the outward boundary of an object distinguished from its internal regions:

Periphery

208

A turning or state of being turned; a turning from a straight line or given course; a bending; a deviation:

Deflection

209

To strike or dash about or against; clashing with a sharp collision; to come together with force:

Impinge

210

The reach of the fog stream is dependent on the _____ of the stream.

width

211

Most constant flow nozzles utilize a _____ stream.

periphery-deflected

212

Narrow Angle stream _____ degrees.

30

213

Wide Angle stream ____ degrees.

60

214

The minimum flow setting for interior structural fire fighting is _____ gpm.

95-100

215

The most common variable flow nozzles in use today are ________.

automatic nozzles

216

Most fog nozzles are designed for a _____ psi discharge.

100

217

Within its desing limits, an automatic nozzle maintains a constant nozzle pressure of approximately ____ psi.

100

218

High pressure fog nozzles operate a pressures up to ____ psi.

800

219

High pressure nozzles and lines are best suited for fighting ______ fires.

wildland

220

Generally, _____ gpm is the maximum amount of water that can safely flow through a handline nozzle.

350

221

Flows greater than ____ gpm produce nozzle reactions that can make the hoselines difficult and dangerous for firefighters to handle.

350

222

The term ______ is applied to any fire stream that is too large to be controlled wihout mechanical aid.

master stream

223

Smoothbore master streams are usually operated at ____ psi and fog master streams at ____ psi.

80 , 100

224

Master stream flows are usually ____ gpm or greater.

350

225

Master streams are most often used in _____ attack mode.

defensive

226

There are four basic categories of master stream devices:

-Monitor
-Turret pipe
-Deluge set
-Elevated master stream

227

Three basic types of monitors:

-fixed
-portable
-combination

228

The ______, sometimes called a deck gun or turret, is permanently mounted on the apparatus.

fixed monitor

229

The _____ is also sometimes called a deck gun or deck pipe.

turret

230

_______ are those large-capacity nozzles that are designed to be placed on the end of an aerial device.

Elevated master streams

231

A _____ is a master stream device used in conjunction with aerial ladders.

ladder pipe

232

Most modern aerial ladders have _____ waterways.

preplumbed

233

While some are also called _______, cellar nozzles are often used on basement fires.

distributors

234

A water curtain is only effective in absorbing ______ heat from a fire.

convected

235

The piercing nozzle is generally a ___ to ___ foot hollow steel rod 1 1/2 inches in diameter.

3 to 6

236

As water is discharged from a nozzle at a given pressure, a force pushes back on the firefighters handling the hoseline. This counterforce is known as _______.

nozzle reaction

237

Nearly all fog nozzles are designed to operate at a nozzle pressue of ____ psi.

100

238

In most cases, ____ psi is used as the nozzle pressure for solid stream handlines.

50

239

Solid stream nozzles used on aerial devices should be limited to a nozzle pressure of ___ psi and fog nozzles ___ psi.

80 , 100

240

Nozzle Reaction Formula

NR=1.57 x d2 x NP

241

_______ handlines are the most frequently used fire service hose lays.

Preconnected

242

Combined, friction loss and elevation pressure loss are referred to as _______.

total pressure loss (TPL)

243

All of these pumps are known as ______ pumps because a positive actin takes place - all water and air are foreced out of the pump body with each operating cycle.

positive displacement

244

The modern fire department pumper is equipped with a ______ pump as its main pump.l

centrifugal

245

The _____ pump does not use positive action to force water from the pump.

centrifugal

246

Positive displacement pumps, unlike centrifugal pumps, can pump _____.

air

247

For this reason, ______ pumps are used as priming devices to get water into centrifugal pumps during drafting operations.

positive displacement

248

The forward stroke causes water to be discharged, andthe return stroke causes the pump to fill with water again. This is known as as ______ pump.

single-acting piston

249

The output capacity of the pump is determined by the ______ and ______.

size of the cylinder and the speed of the piston travel.

250

______ pumps are the simplest of all fire apparatus pumps from the standpoint of design.

Rotary-type

251

5th Principle of water: The pressure of a liquid in an open vessel is proportional to the density of the liquid.

True

252

Most of the rotary-type pumps in use today are either of the _____ or _____ construction.

rotary gear or rotary vane

253

The _____ pump consists of two gears that rotate in a tightly meshed pattern inside a water tight case.

rotary gear

254

The total amount of water that can be pumped by a rotary gear pump depends upon the _____ of the pockets in the gears and the ______ of rotation.

size, speed

255

This is one of the most common types of pumps used to prime centrifugal pumps:

rotary vane pump

256

The distance between the rotor and the housing is much greater at the INTAKE than it is at the discharge.

True

257

______ pumps are the most common main pumps in the fire service.

Centrifugal

258

The impeller rotates very rapidly within the casing, generally from ____ to ____ rpm.

2,000 to 4,000

259

There are three main factors that influence a centrifugal fire pump's discharge pressure:

-Amount of water being discharged
-Speed at which the impeller is turning
-Pressure of water when it enters the pump form a pressurized source.

260

Simply stated, the greater the volume of water being flowed, the lower the discharge pressure.

True

261

Doubling the speed of the impeller results in ____ times as much pressure if all other factors remain constant.

four

262

The centrifugal pump is unable to pump ____ and is not self-______.

air, priming

263

There are two basic types of centrifugal pumps used by the fire service:

-single stage
-two stage

264

The process of switching between pressure and volume is sometimes referred to as ______.

changeover

265

At lower flow rates, operating in the position reduces the load and the required rpm of the engine.

series (pressure)

266

If there is any question as to the proper operation of the transfer valve, it is better to be in ____ (volume) than is series (pressure).

parallel

267

The _____ valves are essential in a multi-stage pump.

clapper (check)

268

The driver/operator can check the pump temperature by placing a hand on the direct pump intake pipe of the pump.

True

269

The most common type of packing in packing rings is a material made of ____ impregnated with _____ or _____.

rope fibers, graphite, lead

270

_____ pumps are those pumps that are powered by a gasoline or diesel engine independent of an engine used to drive the vehicle.

Auxiliary engine-driven

271

The most common applications for auxiliary engine-driven pumps are:

-Airport rescue and fire fighting (ARFF) vehicles
-Wildand fire apparatus
-Mobile water supply apparatus
-Trailer mounted fire pumps
-Portable fire pumps

272

The pumping capacity of auxiliary engine-driven apparatus is generally 500 gpm or less.

True

273

In recent years, some manufactures are providing "full torque" power take-offs that permit the installation of pumps as large as _____ gpm.

1250

274

Midship pumps are the most common type used in the fire service.

True

275

With the engine idling and the pump engaged, most speedometers read between ___ to ___ mph depending on the apparatus.

10 to 15

276

The automatic transmission LOCKS in gear during pump operations.

True

277

All components of the piping system on fire apparatus must be of a _____ resistant material.

corrosion

278

Front and rear intakes on midship pumps are really _____ intakes.

auxiliary

279

Many pumpers today are equipped with tank-to-pump lines a large as ____ inches in diameter.

4

280

Pumps that have a capacity of _____ gpm or greater may require more than one large intake connection at each location.

1500

281

The main intake on a front-mount pump is located at the ______ portion of the pump.

lower

282

The ____ line can be used to circulate water through the pump to prevent overheating when no lines are flowing.

tank fill

283

The tank-fill valve allows water to flow from the ____ to the ____.

pump, tank

284

The most common type of valve is the ______ valve that permits full flow through the lines with a minimum of friction loss.

ball-type

285

____ valves are most commonly operated by a handwheel.

Gate

286

Primers fall into three categories:

-positive displacement
-exhaust
-vacuum

287

Most modern fire apparatus use ______ primers.

positive displacement

288

Because engine vacuum is maximum near idle speed, the vacuum primer works best at a _____ engine rpm.

low

289

The master intake gauge is usually calibrated from ____ to ____ psi positive pressure and from ____ to ____ inches of mercury on the negative side.

0 to 600, 0 to 30

290

The tachometer shows ____ rpm.

engine

291

The tachometer records the engine speed in revolutions per ____ (rpm)

minute

292

The most common throttle used on the pump operator's panel is the type of knob that turns.

True

293

There are two types of auxiliary coolers commonly found on older apparatus:

-marine type
-immersion type

294

Test have indicated that the apparatus may override the parking brake system at engine speeds as low as ____ rpm.

1300

295

Midship pumps require that both the pump and drive transmission be in gear for operation.

True

296

Some pump manufacturers may recommend that their pumps remain in the SERIES (PRESSURE) position until up to ____ % of capacity is required.

70

297

Hydrant valves are used where ____ lays are frequent.

forward

298

When using 2 1/2 or 3-inch hose lines to supply the pumper directly off hydrant pressure, it is recommended that the lines be no longer than ____ feet.

300

299

The ____ lay is laid from the fire to the water source.

reverse

300

The ___ lay is the most direct way to supplement hydrant pressure and perform drafting operations.

reverse

301

When a pumper is connected to a hydrant and is not discharging water, the pressure shown on the intake gauge is the ______ pressure.

static

302

When the pumper is discharging water, the intake gauge reading is the ______ pressure.

residual

303

Atmospheric pressure at sea level is _____ psi.

14.7

304

Atmospheric pressure decreases ____ psi for each 1000 feet of elevation gain.

0.5

305

____ can be described as that condition where, in theory, water is being discharged from the pump faster than it is coming in.

Cavitation

306

Simply put, you can only discharge the amount of water that has been taken in on the intake side of the pump.

True

307

Pump capacity ratings are based on a ____ foot lift.

10

308

The hard intake hose may be connected to the apparatus AFTER the suction end of the hose has been placed in the water.

True

309

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

50

310

When a standpipe system is known to be equipped with pressure-reducing valves, the elevation pressure used must be based on the TOTAL HEIGHT of the standpipe or the zone being used.

True

311

The process of raising water from a static source to supply a pumper is know as ______.

drafting

312

The elevation difference between the static water source and the pump intake, with the pump being higher than the water supply source is known as ____.

lift

313

The pressure in the pump and intake hose will be LESS than the atmospheric pressure.

True

314

In most circumstances, the maximum lift is no more than ____ feet.

25

315

_____ is the height of a column of water may be lifted in sufficient quantity to provide a reliable fire flow.

Dependable lift

316

Every fire pump in good repair should have a dependable lift of at least ____ feet.

14.7

317

When at draft, the net pump discharge pressure is MORE than the pressure shown on the discharge gauge.

True

318

Fire department pumpers are rated at a lift of ___ feet through ___ feet of intake hose.

10, 20

319

There are two types of static water supply sources that firefighters may draw from if necessary:

-natural
-man made

320

Cisterns vary in capacity; sizes from ____ to ____ gallons are common.

10,000 to 100,000

321

Water has LOW levels of opacity and reflectivity that allow radiant heat to easily pass through it.

True

322

The source pumper should be the engine with the LARGEST pumping capacity.

True

323

Hose tenders usually carry a mile or more of large diameter hose.

True

324

A relay operation is based on two things:

-The amount of water required at the emergency scene
-The distance from the emergency scene to the water source

325

All fire department pumpers are rated to pump their maximum volume capacity at a net pump discharge pressure of ___ psi.

150

326

A pumper CAN exceed its rated capacity if connected to an adequate hydrant.

True

327

At no time should a relay pumping operation result in discharge pressures that exceed hose test pressures.

True

328

A relay pumping operation always begins with the ______ pumper.

source pumper

329

The source pumper should be the engine with the LARGEST pumping capacity.

True

330

Hose tenders usually carry a mile or more of large diameter hose.

True

331

A relay operation is based on two things:

-The amount of water required at the emergency scene
-The distance from the emergency scene to the water source

332

All fire department pumpers are rated to pump their maximum volume capacity at a net pump discharge pressure of ___ psi.

150

333

A pumper CAN exceed its rated capacity if connected to an adequate hydrant.

True

334

When possible, select a fill site that is capable of supplying at least ____ gpm.

1000

335

A relay pumping operation always begins with the ______ pumper.

source pumper

336

Once the relay is in operation, the water shuttle may be discontinued.

True

337

Fill site pumpers should have a minimum pump capacity of ____ gpm.

1000

338

Vehicle weight restrictions generally limit single, rear-axle apparatus to a maximum tank capacity of _____ gallons.

1500

339

Water tenders must have at least one large tank discharge that is capable of emptying ____ % of the tank volume at an average rate of 1,000 gpm.

90

340

Gravity dumps DO NOT use any mechanical pressure source.

True

341

When possible, select a fill site that is capable of supplying at least ____ gpm.

1000

342

Once the relay is in operation, the water shuttle may be discontinued.

True

343

Fill site pumpers should have a minimum pump capacity of ____ gpm.

1000

344

Vehicle weight restrictions generally limit single, rear-axle apparatus to a maximum tank capacity of _____ gallons.

1500

345

Water tenders must have at least one large tank discharge that is capable of emptying ____ % of the tank volume at an average rate of 1,000 gpm.

90

346

Gravity dumps DO NOT use any mechanical pressure source.

True

347

When possible, select a fill site that is capable of supplying at least ____ gpm.

1000

348

A _____ shuttle route is most desirable.

circular

349

Ideally, each tender should be filled at a minimum rate of ____ gpm.

1000

350

IFSTA recommends that a ____ be used to fill tenders at ALL fill site operations, regardless of whether a hydrant or static source is used.

pumper

351

The following are three primary methods that can be used to operate a dump site:

-Direct pumping operations
-Nurse tender operations
-Portable water tank operations

352

_____ tank dump sites are most suitable for continuous water supply operations.

Portable

353

At least ___ firefighters will be required to deploy the portable tank.

2

354

The most common style of portable water tank is the ______ type.

folding

355

It is recommended that the portable water tank be set up on a level surface and have a capacity that is at least ____ gallons larger than the capacity of the water tank on the apparatus carrying it.

500

356

A _____ shaped arrangement is usually preferred for multiple portable tank operations.

diamond

357

Mechanical foams must be _____ and _____ before they can be used.

proportioned, aerated

358

The raw foam liquid in its storage container before being combined with water and air:

Foam concentrate

359

The device that introduces foam concentrate into the water stream to make the foam solution:

Foam proportioner

360

The mixture of foam concentrate and water before the introduction of air:

Foam solution

361

The completed product after air is introduced into the foam solution (aka finished foam):

Foam

362

Class B fuels are divided into two categories:

hydrocarbons and polar solvents

363

How Foam Works: Creates a barrier between the fuel and the fire:

Separating

364

How Foam Works: Lowers the temp of the fuel and adjacent surfaces:

Cooling

365

How Foam Works: Prevents the release of flammable vapors and therefore reduces the possibility of ignition or reigniton:

Suppressing

366

Most FF foam concentrates are intended to be mixed with ___ to ___% water.

94 to 99.9

367

There are four basic methods by which foam may be proportioned:

-Induction
-Injection
-Batch mixing
-Premixing

368

_____ is the simplest method of proportioning foam concentrate in water.

Batch mixing

369

_____ is one of the more commonly used methods of proportioning.

Premixing

370

____ gallon plastic pails are perhaps the most common containers used by the municipal fire service to receive and store foam concentrate.

5

371

Class A foam is the formulation of hydrocarbon surfactants that REDUCE the surface tension of the water in the foam solution.

True

372

The application for Class A foam is the same as the minimum critical flow rate for water.

True

373

____ foam is very liquid and is desirable for areas requiring maximum penetration.

Wet

374

___ foam is a rigid coat that adheres well. Has a very LOW water content and HIGH air content.

Dry

375

___ foam has the ability to blanket and wet the fuel equally well.

Medium

376

AFFF foam maintains its alcohol-resistive properites for about ___ minutes.

15

377

To determine the application rate available from a nozzle, divide the nozzle flow rate by the area of the fire.

True

378

Depending on its purpose, foam can be described by three types:

-low expansion
-medium expansion
-high expansion

379

UNignited spills do not require the same application rates as IGNITED spills.

True

380

_____ is the most commonly used foam today.

AFFF

381

Whether the foam is used in either a medium or high expansion capacity is determined by the type of _____ used.

application device

382

The _____ is the most basic type of foam proportioner used in the fire service.

in-line eductor

383

The three most common types of portable foam proportioners are:

-in line eductors
-foam nozzle eductors
-self educting master stream nozzles

384

The eductor must not be more than ___ feet above the surface of the foam concentrate.

6

385

The self educting master stream foam nozzle is used where flows in excess of ____ gpm are required.

350

386

In-line eductors use the _____ Principle to draft foam concentrate into the water stream.

Venturi

387

This type of proportioner is one of the most common types of built-in proportioners installed in mobile fire apparatus today:

Around-the-Pump

388

IFSTA defines a handline nozzle as "any nozzle that one to three firefighters can safely handle and that flows less than ___ gpm.

350

389

Expansion ratios using fog nozzles are between ___ and ___.

2:1 and 4:1

390

The _____ foam nozzle is the only type of nozzle that can be used with protein and flouroprotein concentrates.

air-aspirating

391

The techniques for applying foam to a liquid fuel fire or spill inclue the:

-direct application
-roll down
-bank down
-rain down

392

The ____ method is used with Class B foam.

roll-on

393

The two basic types of flowmeter sensors that are commonly used in the fire service:

Paddlewheel
Spring Probe

394

When properly calibrated and in good working condition, flowmeters should be accurate to tolerance of ___ to ___ percent.

1-3%

394

The friction loss in old hose may be as much as ___ % greater than that in new hose.

50

395

Some departments train their drivers to practice looking ____ seconds ahead on city streets and ____ seconds ahead on highways and estimating where they will be in that time.

12, 20

396

Per NFPA 1901 and 1911, a side to side variance in weight should NOT exceed ____ percent.

7