Pump Ops Chpt 16 Flashcards Preview

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Flashcards in Pump Ops Chpt 16 Deck (98):
1

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

Aerial ladder truss construction

2

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

Trusses

3

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

Trusses

4

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

Truss

5

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

Base

6

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

Fly sections

7

The two most common materials for construction of aerial ladders are

Heat treated aluminum and steel

8

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

Beams

9

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

Top rails

10

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

Rungs

11

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

K bracing

12

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

Hydraulic system

13

The _____ transforms power into mechanical force

Actuator

14

Is the medium by which the system transmits force

Hydraulic fluid

15

Force is created on the fluid by a

Hydraulic pump

16

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

PTO

17

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

Hydraulic reservoir

18

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

Check valves

19

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

Relief valves

20

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

Counter balance valves

21

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

Selector valve

22

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

Hydraulic cylinders

23

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

Double acting

24

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

Outriggers

25

Are sometimes referred to as elevating or lift cylinders

Hoisting cylinders

26

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

Trunnion

27

Normal hydraulic pressure is from ________

850 to 3000 psi

28

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

Integral safety valves

29

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

Aerial ladder apparatus

30

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

Aerial ladder

31

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

Rotation

32

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

50 to 137 ft

33

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

Ground to the highest ladder rung

34

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

Elevating platform leveling system

35

The required minimum floor area of a platform is

14ft

36

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

24 inches

37

Is required a floor level And should be 4 inches high

Kickplate

38

Is built into protect firefighters on the platform from radiant heat

Heat protective shield

39

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

Fog curtain nozzle

40

NFPA 1901 requires the nozzle to flow at least _____

75 gpm

41

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

500 pounds

42

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

1000 gpm

43

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

90 degrees in 150 seconds or less

44

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

Roof ladders

45

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

Ground to top surface of the highest platform handrail

46

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

Straight chassis, three axle vehicle with rear mounted aerial device

47

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

75 to 100 feet

48

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

Box beam or tubular truss beam construction

49

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

Box beam

50


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

Huck bolted

51

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

Articulating aerial platform

52

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 ______

Straight line apparatus

53

Standard articulating aerial platforms range in height from _______

55 to 85 ft

54

Many fire departments choose to outfit their pumpers with

Water towers

55

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

90 degrees

56

Common sizes for these devices range from 50 to 130 ft

Water towers

57

They are capable of maximum flows ranging from



Water towers

1000 to 5000 gpm water towers

58

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

Plow steel

59

Is the rotational structural component of the aerial device

Turntable

60

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

Turntable

61

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

Control pedestal

62

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

Aerial stabilizers

63

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

Body collision

64

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

Rotational interlock short jack

65

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

Retraction

66

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

Nozzle stow

67

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

Aerial functions interlocks

68

The cab will not raise is the engine is running

Cab interlock

69

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

Tiller operator interlock

70

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

Water delivery systems

71

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

Telescoping waterways

72

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

Bed ladder pipe

73

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

Telescoping water way

74

Most telescoping water systems are capable of flows up to

1000 gpms

75

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

2 locations

76

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

Detachable ladder pipe

77

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

15 degrees

78

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

2000 gpms

79

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.

2 1/2 inch

80

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

Generators

81

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

Portable generators

82

Usually have a larger capacity than portable units

Vehicle mounted generators

83

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

Vehicle mounted generators

84

All vehicle mounted generators must be installed in accordance with applicable______

Electrical codes

85

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

Portable lights

86

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

Fixed lights

87

Are needed to conduct electric power to portable equipment.

Electric power chords

88

Common recommended lengths should not exceed ______ per reel or cord

200 ft

89

May be used when multiple connections are needed

Junction boxes

90

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

Junction boxes

91

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

Adapters

92

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

Hydraulic powered extrication tools

93

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

100 ft

94

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.

Ground ladders

95

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

Smoke ejectors

96

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

Positive pressure ventilation

97

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

Loss control

98

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

Nondestructive testing