Chpt 18 Flashcards
The first thing that should happen whenever any drill or when another shift turns over any type of apparatus is to perform a
360 degree walk around inspection
The 360 degree walk around provides you with that initial
Size up
Most inspections should start at the _____ and continue with a quick cursory look at the apparatus
Drivers door
Hydraulic reservoirs have to be checked at least _____, according to your departments SOPs.
Weekly
The reservoir contains an integral filter that cleans the oil of particles as small as
10 microns
Crossing railroad tracks shortens the ___, the _____, and the ______, that bump you heard during the last call might possibly have been an outrigger plate or a low hanging piece of apparatus under the truck hitting the track as the apparatus passed over it
Angle of approach, angle of departure, and break over angles
Are commonly used in apparatus that must operate in larger cities with narrow streets
Short set outriggers
The ____ are the largest and most powerful hydraulic system on the aerial apparatus
Lift cylinders
These double acting cylinders are used to raise and lower the aerial through the application of hydraulics. They also have ______ that will hold the cylinders in the position requested
Pilot operated check POC
The advantage of the ______ is that it allows the driver operator to configure the unit to fly below the 0 degree grade and still have enough power to lift the aerial back up
Double acting cylinder
The double acting cylinder also allows for smooth synchronous operations and enables the driver operator to _____ the controls and perform movements of the ladder without jerking and getting the units into a bind
Feather
Some aerial devices that have a long reach or heavy sections will utilize two rotation gears. According to engineers, this arrangement reduces ______ that is, side to side motion of the aerial turntable
Backlash
Th minimum flow on an aerial device, per NFPA standards, is
1000 gpm
The _____ allows the ladder to turn while the waterway stays connected
Hydroelectric swivel
In the middle of the device is a water passage with ____ on both the top and bottom of the swivel
Victaulic connections
The _____ are the bottom part of the ladder that holds the rungs
Base rails
All of the sections bottom rails are called
Base rails
The ____ are the actual stepping surface that is used to climb the ladder
Rungs
At a minimum, the rungs have an outer diameter of 1 1/4 inches around and should be capable of supporting ____ at the center of each rung
250 pounds
The rung has to be able to support _____
Two firefighters or a firefighter and a victim
Are stiffening members of the lower rung and base rail assembly
K braces
The ____ are the rails that fire fighters hold onto while climbing each section of the ladder
Hand rails
Controls located at the platform are the same as those found at the
Turntable control
All functions of the platform controls can be over ridden by the _____ from the lower control section
Turntable operator
A valve is also provided that taps into the waterway pipe in the platform. It protrudes through the protective cover installed under the platform and will spray up to ____ for cooling under the platform in case of impinging fire
75 gpms
The ____ has an obstructed view, and his job is steer the back of the trailer
Tiller man
An _____ foot switch is provided in the event of headset failure, through which the tiller operator can signal the driver with one buzz for stop and two buzzes for go
Electric buzzer foot switch
The tillerman also has a _____ switch on the floor that he or she must press so that the front driver operator can start the truck, thereby preventing the front driver operator from leaving the firehouse without a tiller operator
Safety or dead mans switch
A dash mounted gauge called the _____ informs the tillerman of the position of the rear wheels either centered, left, or right
Rudder control indicator
A tracking light is mounted on the back of the truck cab that is visible to the tiller cab; the tillerman uses this light as a ____ to keep the tiller straight
Centering guide
The most important consideration in aerial operations is
Proper set up and good ground to work from
Whenever you set up an aerial, whether it is for training, operational checks, or firefighting, you need a
Good base
Treat any set up, either real or training, as a test of your
Placement decision
The aerial is most effective when deployed off the_____ of the apparatus, because you can get maximum reach of the device with maximum stability
Rear
Try to get the center of the turntable________, so that you can raise, rotate, and extend the aerial with maximum efficiency
Inline with the target
Each control station will have a fast idle switch, which tells the diesel to idle up to _____ to supply hydraulic volume and pressure
1000 to 1500 rpm
The ____ shows that the apparatus is between 0 and 3.5 degrees, which indicates that you will be able to use 100 percent of the ladders capacity
Green zone
The ____ indicates that the apparatus is between 3.5 and 6.0 degrees, which limits the use of the ladders capacity to 50 percent
Yellow zone
The _____ indicates that the apparatus is exceeding safe limits.
Red zone
In a perfect world, the driver operator will set up the apparatus so that the trucks leveling ball shows zero degrees in the
Green zone
On every function of the outrigger controls, there is a _____ to indicate that the driver operator has safely and successfully deployed that part of the device
Green light
Sometimes, such as when there is a short street or a parked car in the way. It is not possible to extend a beam all the way out. This scenario and set up, called a ____, limits the use of the device
Short set
The _____ of the unit is measured from the ground to the highest rung at full elevation
Working height
Ladders are built anywhere from ____ of vertical height and can operate at up to _____ of elevation
75-135 ft
75 degrees
Is measured from the heel pin or centerline of the truck to the outermost reach of the ladder itself
Horizontal height
Newer aerial apparatus are capable of operating at full capacity while in angles ranging from ______
-10 degrees to +75 degrees
When an aerial is in the cradled or horizontal position, the angle is considered to be _____
Zero degrees
Newer aerial devices with more powerful hydraulic systems are capable of lowering the ladder below zero degrees to a negative or below horizontal angle. These type of maneuvers are usually performed at ______
90 degrees off the side over the outriggers or directly over the back of the apparatus
Are the most important charts carried on the aerial apparatus
Load charts
More accidents happen during the ____ than during any other operation of aerial devices
Rotation phase
Most aerial devices are ____ long when they are not extended and all sections are bottomed out in the fully retracted position
35 to 40 ft
The pin has two positions, and the outer most position is commonly referred to as the _____
Water tower position
Some aerial devices are capable of locking the monitor back at the outer midsection, which allows the fly section to have a clear bottom without a waterway or monitor that might interfere with ladder placement. Most departments run their waterways in this fashion which is called the
Rescue position
Is used on steel aerial apparatus
Magnetic particle test
The test is performed by using a small amount of steel particles that are puffed onto the area being tested by a small snuffer that mimics a small bulb syringe
Magnetic particle test
Utilizes sound waves to test a material for thickness
Acoustic testing
Also uses sound waves, but it relies on a scope that via, a display signature, indicates if there are defects in the material
Ultrasonic testing
Is used to reveal surface defects only. A colored dye is applied to the area of suspected deficiency, and a developer is subsequently applied.
Dye penetrant testing
Dye penetrant testing is primarily used for testing
Aluminum ladders
