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Engine company 4th ed > Chapter 7 > Flashcards

Chapter 7 Flashcards

Water supply

1
Q

The first factor that influences the movement of water is

A

The source

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2
Q

There are four possible sources of water at the fire ground. What are they?

A

Hydrant and water systems
Static water sources
Apparatus water tank
Mobile water supply apparatus p. 213

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3
Q

There are three types of hydrants what are they?

A

Dry barrel
Wet barrel
Dry hydrant

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4
Q

a “” hydrant or frostproof hydrant is installed by the municipality when temperatures can drop below freezing, the main stem is located below the frost line and can be several free below. The hydrant once the top is open the entire barrel is charged with water.

A

Dry barrel hydrant

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5
Q

Always stand ‘’ when charging hydrant

A

Behind

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6
Q

a ‘’ hydrant can be used when temperatures do not drop below freezing. The barrel is always charged

A

Wet barrel hydrant

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7
Q

a ‘’ hydrant is a large pipe with one and submerge into a static water source for the intake, the other, and rises above ground level where they discharge connection to which the hard section hose is attached. It’s like a giant straw.

A

Dry hydrant p. 214

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8
Q

Areas with ‘’ are especially vulnerable to low pressure water supplies

A

Dead end mains, and small mains

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9
Q

Most housefires are extinguished with ‘’

A

500 gallons some with less than 100

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10
Q

’’ pressure is the pressure of the hydrant water at rest, that is with the hydrant open to the pump and no water flowing through the pump

A

Static pressure

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11
Q

’’ pressure is the pressure in the hydrant with water flowing from the hydrant through the pump

A

Residual pressure p. 216

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12
Q

Any hose connected from the hydrant into the pump is technically considered a ‘’ although the term is rarely used anymore

A

Suction hose

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13
Q

Any hose leaving the pump under pressure through a discharge port is technically called ‘’

A

Supply

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14
Q

Getting a supplies understood to me connecting to a

A

Water source

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15
Q

At the beginning of the operation, the pump operator reads the compound gauge with the hydrant open and all discharge gates closed this is ‘’’’ with one attack line charge to the proper discharge pressure. The compound gauge is read again this is.

A

Static pressure
Residual pressure

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16
Q

The difference between static and residual pressure is what

A

Gives the true measurement

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17
Q

Locations of static water sources are

A

Lakes
Ponds
Reservoir p. 217

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18
Q

pre - connects enable water to be delivered to a fire immediately which is called

A

Fast water

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19
Q

Two main types of mobile water supply apparatus is available are called

A

Tanker and tender ( tender is the correct term according to IMSICS) P. 218

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20
Q

Depending on tank size mobile water supply apparatuses generally carry ‘’’

A

1000 to 3500 gallons of water

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21
Q

Some departments operate, tractor drawn, tanks, capable of caring

A

4000 or more gallons

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22
Q

A mobile water supply operators may or may not be equipped with ‘’’ most of them are many equipped with a permanent’’’ ‘’ per and larger ones of ‘’

A

Fire pump,
750 gallons per minute
1500 gallons per minute

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23
Q

Vehicles carrying 1000 gallons of water and more with a fire pump our generally referred to as

A

Tankers

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24
Q

Vehicles carrying 1000 gallons of water or more without a fire pump or using a small PTO driven pump are called

A

Tenders

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25
Q

Large modern dump valves allow lots of water to be offloaded with minimal time loss thus, enabling the truck to return quickly to reload. Additional methods might be desired to improve the offloading rate of gravity dumps these methods include.

A

Jet assistance
pneumatic pump

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26
Q

Basically a ‘’ is a pressure water stream used to increase the velocity of a large volume of water that is flowing by gravity through a given size dump valve

A

jet p. 219

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27
Q

a ‘’ system can be used to pressurize a tank and assist and expelling the water to make the overall tendered shuttle operation. More effective. A pumper or pump errors should be located at a water source to fill the water supply apparatus.

A

Pneumatic pump

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28
Q

What corridor is basically a circular driveway the goal is to allow the tender to bring in and dump its water without the necessity of backing up the apparatus or performing a three-point turn

A

water shuttle, apparatus corridor p. 220

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29
Q

What makes water tenders pot potentially dangerous to drive is the fact that they are’’ and should be driven by ‘’

A

Heavy
Experienced driver

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30
Q

Sometimes portable tanks are referred to as

A

Portable ponds or port a pond

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31
Q

The second factor that influences the movement of water is

A

The engine

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32
Q

The term engine and pumper apply to the same apparatus without ‘’ ..
‘’ is a piece of fire apparatus with the permanent mounted fire pump of at least 750 gallons per minute capacity a water tank and a hose body whose primary purpose is to combat structural and associated fires.

A

Confusion
Engine or pumper

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33
Q

The pumping system provided must be capable of delivering the following:
@100%,70%,50%

A

100% of rated capacity at 150 psi

70% capacity at 200 psi

50% of rated capacity at 250 psi

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34
Q

Most fire engines and major city fire departments are rated at ‘’’ x 2 making them a class A pumper

A

1250/1500 gpm at 150 psi

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35
Q

All pumpers are rated to ‘’’ thus a 1500 gallon per min pumper can draft and discharge 1500 gallons of water permitted from a static water source

A

Draft p. 222

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36
Q

The main pump intake must have a ‘’’ thread if the apparatus is to be used in the United States

A

Male national hose( NH) to accommodate hard suction hoses

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37
Q

Suction intakes are usually located on

A

The sides, front or rear of the pumper

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38
Q

General length of soft section is

A

20 to 50 feet

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39
Q

Discharge ports of ‘’’ or larger must be provided to discharge the rated capacity of the pump.. Must be equipped with ‘’’ threads

A

2.5 Inches are larger, equipped with male NH threads

40
Q

Most difference all pumpers have is an intake control valve that is either a large ‘’’ or ‘’’ connection with a ball or butterfly control valve

A

Female threaded or storz connection p. 223

41
Q

The pump must not be operated ‘’ of its rated peak speed for any length of time if it is, the engine, drier pump may be damaged

A

80%

42
Q

When residual pressure reaches zero there is no ‘’ left because ‘’’’

A

No flow left because there’s no water left. That is why you have to monitor this.

43
Q

Pump operator should maintain a residual pressure of

A

20 to 25 pounds per square inch or more if at all possible

44
Q

The residual pressure should not be allowed to drop below “” psi

A

10 psi except under extreme conditions

45
Q

Losing water completely it’s called

A

Cavitation or running away from water

46
Q

For safety reasons pump operators must never what a hose line without the consent of personal operating it

A

Down a hose line to reduce flow

47
Q

Increasing residual pressure can be accomplished by

A

Shutting down unnecessary hose lines, half gating or gating down hose lines or reducing tip sizes to increase flows p. 224

48
Q

One-way the engine company can increase. The efficiency of its operation is to minimize. ‘’ in the supply hose and attack line.

A

Friction loss p. 225

49
Q

Oh, the third factor that influences the movement of water is

A

Fire hose

50
Q

The larger the diameter of a hose the less ‘’ there

A

Friction loss

51
Q

the greater the flow rate in a given size hose the greater the’’

A

Friction loss

52
Q

To provide proper nozzle pressures, pumpers must overcome

A

Friction loss

53
Q

The attack hose designed to convey water to ‘’’ x 7

A

Hose line nozzles
Distributor nozzles
Master stream appliances
Portable hydrants
Manifold
Standpipe and sprinklers

54
Q

The attackers hose is designed to use it operating pressures up to at least ‘’ psi

A

275 psi

55
Q

The supply hose was designed for moving water between a

A

Pressure water source and a pump that is supplying attack line

56
Q

LDH has a diameter of ‘’’ what is the most common size size used in the Fire service?

A

3 1/2 inches or larger
4 to 5 inches is the most common size

57
Q

Whenever a LDH is used for application ‘’’’ device with a maximum setting of ‘’ should be used

A

Pressure relief device
200 PSI

58
Q

The standard hose of the fire service is the

A

2 1/2 inch line the workhorse of the fire department

59
Q

2 1/2 inch lines can be used for

A

Attack lines
Supplying master streams
Stand Pipe
Sprinkler system
Water supplies P. 226

60
Q

The 2.5 INCH hose LINE is often use as a “” regarding supply lines

A

Second supply into the pump with LDH being the primary supply section

61
Q

Friction Lawson a single section of 2 1/2 inch hose is

A

20 PSI per hundred feet of hose P. 227

62
Q

The duel 2 1/2 inch lines are primarily used t to supply

A

Sprinkler systems
Standpipes Pipe
Portable monitors

63
Q

What inch hose has been phased out?

A

3 inch

64
Q

Most metropolitan fire department around the country now use ‘’ LDH

A

4”

65
Q

If 3 inch hose is still being used. It is to supply fire protection systems like.

A

Sprinklers and standpipes or for latter pipe operations on Ariel ladders

66
Q

NFPA ‘’’ standard on firehose defines and LDH as a hose with an inside diameter of

A

NFPA 1961
3.5 or larger

67
Q

In industrial facilities’’’ LDH is not uncommon

A

7 1/4 AND 10 IN

68
Q

’’ provides the most efficient means of minimizing friction loss and developing the full potential water, supplies, and pump capacity

A

LDH P. 228

69
Q

A 5 inch hose line is approximately equivalent to

A

Six 2 1/2 inch hose lines

70
Q

The first engine cannot comply with what rule if they lay reverse

A

2in 2 out p. 229

71
Q

As it starting guidelines, the engine on the hydrant should initially be pumping at what?

A

Hundred psi

72
Q

Excessively long lays exceeding ‘’’ require ‘’ to the effect of friction loss and elevation pressure

A

1000ft and up ,
tandem or relay pumping

73
Q

Relay pumping operation should be drilled at least once every

A

Six months

74
Q

The maximum capacity of relay operations is determined by

A

The smallest pumper or the smallest supply hose used

75
Q

Two methods of setting up hose lays for relay pumping

A

Reverse lays
Split lays (blind alley lay) p.231

76
Q

As a start of relay operations, all pumpers and line should be set to pump

A

150 psi to the first pumper at the fire

77
Q

Incoming pressure to the next pumper and the relation should never drop below

A

20 psi

78
Q

Good what between pumpers is effective for relay operations?

A

Communication p. 233 actual

79
Q
A
80
Q

2 1/2 inch supply line should not be used to deliver much more than how many gallons per minute

A

350

81
Q

How many 2 1/2 inch discharges are usually installed for each 250 gallon per minute of rated capacity on the pumper

A

One

82
Q

And the second method of setting up relay the first arriving engine, lays its supply line from “” that begins its attack

A

Property entrance to the Fire building

83
Q

Regarding estimating how many more attack lines can be supplied by water means a drop of 5%, 10%, 20% indicate that only how many more equal parts can be delivered from the water made

A

5% equals three lines
10% equals two lines
20% equals one line

84
Q

What makes large diameter hose a key piece of equipment for moving big water?

A

Low friction loss

85
Q

Up to what capacity is a mobile water supply apparatus generally

A

3500 gallons

86
Q

What is the minimum number of valve intakes that must be provided on the pumper that can be controlled from the pump operator position of the hydrant does not have steam ports, but only 2 1/2 inch discharge port

A

1 pg 223

87
Q

Which type of hose lay can the first arriving engine company comply with the two and two out rule?

A

Forward lay

88
Q

Position the engine “” to the water supply facing the water source

A

Parallel

89
Q

If the driver plans to use the rear discharge port position, the rig, so the coupling of the supply is at “”

A

Mid engine

90
Q

If the driver is going to use the side discharge port position, the rig, so the couplings of the supply is just

A

Clear of the front bumper

91
Q

What is the minimum residual pressure that pump operators should maintain if at all possible

A

20 to 25 PSI

92
Q

The first engine cannot comply with the two and two out rule if they lay

A

Reverse

93
Q

What percentage of the rated capacity must the pumping system be capable providing 150 psi net pump pressure?

A

100 percent

94
Q

What type of set up should the water shuffle apparatus corridor involve?

A

Circular drive

95
Q

What is the maximum setting of the pressure relief device when using large diameter hose for supply attack lines and master Stream applications

A

200

96
Q

What determines the number of attack lines placed in service during fire operations

A

Maintainable water supply

97
Q

Friction laws in a single section of 2 1/2 inch hose per hundred feet

A

20 psi

Engine company 4th ed (14 decks)

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