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Chapa 1 pump ops > Pump Ops Chpt 16 > Flashcards

Pump Ops Chpt 16 Flashcards

1
Q

The supporting beams of the ladder are of _______, which provides the required strength for this work application

A

Aerial ladder truss construction

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2
Q

Consist of an assembly of bars and rods to form a rigid framework

A

Trusses

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3
Q

Engineering design has proven that _____ lend more strength if their assembled members form triangles

A

Trusses

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4
Q

A properly designed _____ permits tension and compression stresses to be distributed over the length of the ladder for maximum strength and minimum weight

A

Truss

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5
Q

The bottom section of the aerial ladder is referred to as the _____

A

Base

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6
Q

The second and subsequent sections that extend beyond the base section are called the _____

A

Fly sections

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7
Q

The two most common materials for construction of aerial ladders are

A

Heat treated aluminum and steel

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8
Q

The base rails , also commonly called the _____, are the lower chords of the aerial ladder to which rungs, trusses, and other portions of the ladder are attached

A

Beams

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9
Q

_____ also called handrails, are the top chords to which the opposite ends of the trussing are attached

A

Top rails

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10
Q

The ____ are the portions that are attached between the two rails and are used as steps for personnel on the aerial ladder.

A

Rungs

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11
Q

Aerial ladders designed and built with ____ as a standard feature provide greater strength than with older designs

A

K bracing

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12
Q

The function of the _____ is to provide power for operating the various hydraulic components needed to stabilize the apparatus and operate the aerial device

A

Hydraulic system

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13
Q

The _____ transforms power into mechanical force

A

Actuator

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14
Q

Is the medium by which the system transmits force

A

Hydraulic fluid

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15
Q

Force is created on the fluid by a

A

Hydraulic pump

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16
Q

The pump is powered by a _____arrangement off the vehicles main engine

A

PTO

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17
Q

The _______ supplies the hydraulic fluid that is moved in and out of the system

A

Hydraulic reservoir

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18
Q

Prevent fluid from overflowing backward through a component and act as a safety feature in the event that a leak develops in the system

A

Check valves

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19
Q

Limit the pressure built up in the system, thus preventing damage due to over pressurization.

A

Relief valves

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20
Q

Prevent unintentional or undesirable motion of the device from its established position

A

Counter balance valves

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21
Q

One of the more important valves in the system is the _______ also known as the transfer or diverter valve, a three way that directs fluid to either stabilizer control valves or the aerial device control valves

A

Selector valve

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22
Q

Convert energy in the system into linear mechanical force or motion when pressurized hydraulic oil is directed into a chamber created by fitting a piston into a cylindrical barrel

A

Hydraulic cylinders

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23
Q

Hydraulic cylinders used for elevation and telescopic control of the aerial device and for operating the stabilizers are ______

A

Double acting

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24
Q

Most modern aerial apparatus are equipped with hydraulically operated stabilizers sometimes called

A

Outriggers

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25
Q

Are sometimes referred to as elevating or lift cylinders

A

Hoisting cylinders

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26
Q

The end of the piston rod outside the cylinder is fitted with a ______ that is anchored to the aerial device or to a turntable, depending on The make of the apparatus

A

Trunnion

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27
Q

Normal hydraulic pressure is from ________

A

850 to 3000 psi

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28
Q

Many new hoisting cylinders are equipped with ________ that lock and hold oil in the cylinder in the event of a leak or blowout

A

Integral safety valves

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29
Q

Regardless of its regional name, the ________ is the most common type of aerial fire apparatus operated in North America

A

Aerial ladder apparatus

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30
Q

An ______ is a power operated ladder that allows firefighters to easily ascend and descend between the tip of the ladder and the turntable for firefighting or rescue operations

A

Aerial ladder

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31
Q

The primary function of the turntable is to provide________Of the aerial device

A

Rotation

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32
Q

In aerial ladders made in North America, the fully extended length ranges from _______

A

50 to 137 ft

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33
Q

The working height for aerial ladders is measured from the ______ with the ladder at maximum elevation and extension

A

Ground to the highest ladder rung

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34
Q

Is required so that the platforms position is horizontal to the ground at all times

A

Elevating platform leveling system

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35
Q

The required minimum floor area of a platform is

A

14ft

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36
Q

Each platform must have a rail completely enclosing the floor area with no opening under the railing greater than the

A

24 inches

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37
Q

Is required a floor level And should be 4 inches high

A

Kickplate

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38
Q

Is built into protect firefighters on the platform from radiant heat

A

Heat protective shield

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39
Q

NFPA 1901 requires a protective water ________ be provided on the bottom of the platform

A

Fog curtain nozzle

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40
Q

NFPA 1901 requires the nozzle to flow at least _____

A

75 gpm

41
Q

All elevating platforms must have a minimum load capacity of 750 pounds when the aerial device is fully extended, at any elevation within its normal range of motion, and with no water in the piping system. This load requirement drops to __ when the water delivery system is charged

A

500 pounds

42
Q

The water delivery system must be capable of discharging at _____ at 100 psi nozzle pressure when the aerial device is any position

A

1000 gpm

43
Q

Elevating platforms that are 110 feet or shorter should be able to be raised from the bedded position to the maximum elevation and extension and be rotated _____or less

A

90 degrees in 150 seconds or less

44
Q

On the extending part of the aerial are common and useful on the tip fly section, near the platform or externally at the base

A

Roof ladders

45
Q

The working height of all types of elevating platforms is measured from the ________ when the aerial device is at maximum extension and elevation

A

Ground to top surface of the highest platform handrail

46
Q

The most common aerial ladder platform in service today is the ______

A

Straight chassis, three axle vehicle with rear mounted aerial device

47
Q

Common sizes of telescoping aerial platforms in use in North America range from ______

A

75 to 100 feet

48
Q

Telescoping aerial platforms devices have two or more sections and are made of either ______

A

Box beam or tubular truss beam construction

49
Q

Consists of four sides of steel or aluminum welded together to form a box shape with a hollow center

A

Box beam

50
Q

Tubular steel or aluminum is welded or ______to form a box shape cantilever or triangular truss design

A

Huck bolted

51
Q

Instead of telescoping into each other, the boom sections are connected by a hinge, and they fold and unfold like an elbow

A

Articulating aerial platform

52
Q

An additional benefit of an articulating aerial platform is that the assembly enables the platform to go up an over and into areas that are not accessible with a ______

A

Straight line apparatus

53
Q

Standard articulating aerial platforms range in height from _______

A

55 to 85 ft

54
Q

Many fire departments choose to outfit their pumpers with

A

Water towers

55
Q

Most water towers are designed so that their fire streams may be deployed at a range of elevation starting from a few degrees below horizontal to nearly_____ from the ground

A

90 degrees

56
Q

Common sizes for these devices range from 50 to 130 ft

A

Water towers

57
Q

They are capable of maximum flows ranging from

Water towers

A

1000 to 5000 gpm water towers

58
Q

The extension and retraction cables are usually corrosion resistant aircraft quality cables of made with a very high strength steel called ______ and they are resistant to abrasion

A

Plow steel

59
Q

Is the rotational structural component of the aerial device

A

Turntable

60
Q

On most aerial apparatus, The lower aerial device control pedestal is located on the

A

Turntable

61
Q

The operators ______ is designed for operators of all heights and is positioned on the turntable side of the aerial apparatus

A

Control pedestal

62
Q

The aerial device function must not activate unless the stabilizers are fully deployed

A

Aerial stabilizers

63
Q

The device will not move into regions where it would make co tact with the body or cab

A

Body collision

64
Q

The aerial device will not rotate over the side of the apparatus where the stabilizers are not fully extended

A

Rotational interlock short jack

65
Q

The device will not retract completely without the activation of the retract override function

A

Retraction

66
Q

The device will not drop into the cradle if the master stream nozzle is not properly positioned

A

Nozzle stow

67
Q

The aerial device will not operate until parking brakes have been set and the transmission has been placed in neutral or the transmission is in the drive position with the driveline to the rear axle disengaged

A

Aerial functions interlocks

68
Q

The cab will not raise is the engine is running

A

Cab interlock

69
Q

Th engine starter will not work unless the tiller operator is seated and belted or a tiller cab start button engaged

A

Tiller operator interlock

70
Q

Are used to discharge elevated master streams for fire attack from the aerial device

A

Water delivery systems

71
Q

Are the most common type while bed ladder pipes are mostly found on older aerial devices

A

Telescoping waterways

72
Q

The oldest type of pre piped aerial ladder water way is the _______, which is a section of pipe, usually 3 or 3 1/2 inches in diameter, attached to the underside of the bed section of the aerial ladder

A

Bed ladder pipe

73
Q

Most new aerial ladders are equipped with a ____ that extends toward the top of the ladder

A

Telescoping water way

74
Q

Most telescoping water systems are capable of flows up to

A

1000 gpms

75
Q

Some telescoping pre-piped waterway systems allow the operator to secure or pin the master stream monitor to _____locations along the device

A

2 locations

76
Q

Aerial ladders not equipped with pre piped water way systems have ______ appliances

A

Detachable ladder pipe

77
Q

Most ladder with detachable ladder pipe appliances restrict the sideways movement of the nozzle to about _____ either side of center

A

15 degrees

78
Q

Because elevating platforms typically have greater load capacities than aerial ladders, the piping on these systems may be larger, and flows of up to _____ are not possible on some models

A

2000 gpms

79
Q

Most elevating platforms are also equipped with at least one ______ discharge in the platform allowing handlines to be stretched from the platform if they are needed on upper levels.

A

2 1/2 inch

80
Q

Are the most common power source used for emergency services and can be portable or fixed to the apparatus

A

Generators

81
Q

Typically have 110/220 volt capacities and are gasoline or diesel powered

A

Portable generators

82
Q

Usually have a larger capacity than portable units

A

Vehicle mounted generators

83
Q

In addition to providing power for portable equipment _________ are responsible for providing power for the apparatus flood light system

A

Vehicle mounted generators

84
Q

All vehicle mounted generators must be installed in accordance with applicable______

A

Electrical codes

85
Q

Are used where fixed lights are not able to reach or when additional lighting is necessary

A

Portable lights

86
Q

Are mounted to the vehicle or aerial device, and there may function is to provide overall lighting of the emergency scene

A

Fixed lights

87
Q

Are needed to conduct electric power to portable equipment.

A

Electric power chords

88
Q

Common recommended lengths should not exceed ______ per reel or cord

A

200 ft

89
Q

May be used when multiple connections are needed

A

Junction boxes

90
Q

Is supplied by one inlet from the power source and is fitted with several outlets

A

Junction boxes

91
Q

In situations where mutual aid departments frequently work together and have different sizes or types of receptacles________ should be carried so that equipment can be interchanged

A

Adapters

92
Q

It is common for fire department aerial apparatus to carry a variety of extrication equipment. The most commonly used tools are _________

A

Hydraulic powered extrication tools

93
Q

Hose distances _____ or greater from the hydraulic pump may have a negative effect on tool operation

A

100 ft

94
Q

Are used when the main aerial device cannot reach a portion of the building, when additional ladders are needed, or when only ground ladders are needed.

A

Ground ladders

95
Q

Are placed in window, door, or roof openings for drawing out heat, smoke, and gases by creating a lower pressure inside the fire building

A

Smoke ejectors

96
Q

Fans are used to increase the air pressure in a structure and thus force out the by products of combustion

A

Positive pressure ventilation

97
Q

Starts from the minute companies leave the station and continues throughout the entire incident

A

Loss control

98
Q

Is conducted every five years, after accidents , when the aerial has been subjected to unusual stresses and loads, and following major repairs and overhauls

A

Nondestructive testing

Chapa 1 pump ops (38 decks)

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