Test 2 Flashcards
What action does a signal person intend the operator to perform if he extends his arm at shoulders height makes a fist with his hand and sticks his thumb up
Boom up
Within what percentage of level does it telescopic boom crane have to be for the gross ratings in the low charge remain valid
1%
The load line of the crane you’re operating comes into contact with an energize powerline there’s no sign of any other danger such as fire in such a situation you should
Stay in the cabin to the lines are D energized
You’re setting up your crane in a confined area and you cannot fully extend your fourth out rigger your crane does not have a load chart for intermediate extension working. In such a situation you should use the capacities in the:
On rubber load chart
According to B 30.5 Mobile crane standard, how many randomly distributed broken wires in rotation resistant rope is cause for replacement of the rope
Two broken wires in six rock diameters
Unless the manufacturer states otherwise the net capacity of a crane picking on the main boom is the capacity listed in the load chart;
Minus the weight of the rigging and all attachments
Unless the operator takes account of boom deflection when lifted off the ground a properly rigged load may-
Swing out away from the crane
Which is the most common cause of death to crane operators
Crane turn over
When preparing to set up a mobile crane for operation which one of the following steps is not needed to be done by the operator
Check lunchroom location
Before making a lift on outriggers, and operator should always:
Extend the out rigors completely and be sure the tires are clear of the ground and a stabilizer pads are firm on the ground
Unless the manufacturer states otherwise truck cranes generally have no lifting capacity over which area
The front
Working radius is defined as the distance from the_
Center of rotation of the crane to the center of gravity of the load
If a bold line is shown on a load chart the capacities below the line_
Are based on stability of the crane
Rough terrain crane capacities are generally greater over the
Front
According to federal requirements, under what conditions is it OK for a person to ride the headache ball
It is never OK
On duty cycle operations such as skipping concrete, most manufacturers require a crane’s load shark capacity to be reduced by
20%
Boom length is measured from the
Boom hinge pins to the center of the boom tips Sheave
Using the preferred method of Installing wire rope from a real onto a hoist drum, the rope runs from the
Top of the real to the top of the drum
Truck crane capacities are usually greater over the
Rear
A truck crane is set up on outriggers. The part of the world shark governed by stability is based on what percentage
85%
When making a deduction for Stowe gym or extension, what type of deduction would you use
Deduction weight
What is the minimum clearance distance one working around powerlines of 600 KV
35 feet
Prior to moving a crane on to the job site the operator shit first determine the condition of the
Access road
OSHA permits hoisting of personnel when
There is no less hazardous or practical way
How often is it required to perform an inspection on swings were ringing there to be used
Before each use
When lifting personnel, the total weight of the loaded personnel platform was not exceed what percentage of the rated capacity of the crane
50%
Side loading of a crane’s boom is permitted
Only with freely suspended loads
If the operator makes two audible signals when moving a crane he is intending to
Go ahead
If a crane’s load mom indicator malfunctions the operator should
Cease crane operations and report the condition to the supervisor
Blocking or cribbing may be placed under outrigger beams
Never
According to OSHA 1926.1422, hand signal charts must be posted
On the lift equipment or vicinity of hoisting operations
What effect does the proper use of mats, blocking, or cribbing have on the suitability of the supporting surface
Distribute the weight and lessons load on supporting surface
According to OSHA 1926 subpart CC, when is a qualified rigger required
When employees are in the fall zone
Walking placed under the Outrigger pads should be capable of handling
100% of the crane weight and 100% of the load
Materials placed under the overhead energized powerlines should
Be handled only if minimum clearance is can be maintained
When working at ground level nearest seller wall, the cranes Outrigger pads or tracks should be placed
At least as far back as the depth of the wall below ground
When setting up a crane on out Riggers, the wheels of the crane should
We just high enough off the ground to relieve the tires of crane wait
What information Hass to be labeled on the hook, lifting device, or assemblies
Rated capacity and weight
Rotation resistant rope can be used with a swivel:
If the rope manufacturer approves
I’m picking carry operations, you should:
Keep the boom as short as possible and the load as close to the ground as possible
In reference to safety devices the letters LMI stand for what
Load moment indicator
When preparing to hoist a light load, the hook should be position:
Directly above the load center of gravity
When working around powerlines that are 700 KV, what is the minimum clearance according to table a required for any part of the crane and it’s a load
35 feet
You plan to pick a load and you were told it weighs 36,500 pounds. Line pole on the crane you were operating is 9000 pounds. How many parts of line will you need
Five parts
If a gym as directed, but not being used to lift the load, you should make a deduction from the gross capacities listed in the load chart based on:
The effective weight of the jib
When the boom length of the crane falls between the links listed in the load chart, you should use the capacity listed for:
The next longest or the next shortest boom like which ever is the lowest capacity
When traveling a crane under energized power lines of 40 KV, no part of the crane may come within what distance of the line
6 feet
In order to control the drift of the load what was the operator do
Keep the boom tip over the load
As you boom down, the leverage of the load on the crane will:
Increase
If leading a crane unattended for an extended period of time how should it be left
The boom retracted and stowed or set at 0°
What is the best type of taglines to be used near powerlines
Poly propylene rope
What is the maximum wind speed allowed one hoisting personnel
20 mph
Timber mats work best when they are
Bolted together
As jib offset is increased
The really capacity goes down
Boom angle is measured from
Horizontal to boom
Barricades are erected to
Keep unauthorized personnel out
What percentage grader is a sling from vertical to basket
100%
The adverse effects of wind on a boom is more on
The side of the boom
When a crane or his load comes in contact with the powerline, and the operator hast to leave the crane he should
Leave the crane without contact of the crane or the ground at the same time
On a carry deck crane, which of these may be removed as per the manufacture
The extension
The load shall not be attached by which of the following methods
Double wrapping the hoist a line around the load
The term stowed boom extension means
The extension is pinned to the base section of the boom
The term stored boom extension means
The extension is laying in the yard
The term tipping axis means the same as the
Fulcrum point
The tipping access of a crane is defined as
The point or line about which a crane tips
The percentage of stability for commercial mounted boom trucks on stabilizers is
85%
As the boom is lowered
The rated capacity goes down
As Jim offset is increased
The radius will increase
The effective way of any erected extension or jib is _______than actual weight
Higher
The effective weights of a stowed extension or jib is_______then actual weight
Lower
As per OSHA, when using hook blocks are overhaul balls with Personal platforms they must
Have a lockable type safety latch
Backwards stability on a boom truck could be a problem on the crane is working
Over the side with a minimum radius
The effective weight of a stored extension or jib______than actual weight
Will not affect the net capacity of the crane
If the boom is designed to be telescoped out equally, and is not, what is most likely to fail
Longest boom section
How often according to B30.5 standards are you required renew your physical exam
Three years
When using a single leg sling to pick a load, and you change how it is rigged from the vertical hitch to a choker hitch, what is the percentage of sling reduction
25%
When using standard voice signals, what is the first command be given
Function and direction
With a loaded boom, what will most likely be the result of the load contacts the boom but a boom contacts the edge of the building
Boom collapse or damage
What is considered working over the front of a truck mount a crane, when working from the center line of the crane
Manufacturer specifications
Delay length of a wire rope is defined as the
Distance it takes for one strand to make a complete
It is important to inspect rotation resistant wire rope more frequently
Internal damage will occur more frequently
According to the OSHA 1926.1413, what is the maximum diameter reduction of wire rope for it to be removed from service
5%
Load indicating mechanisms, overload warning systems, and other automatic safety devices have improved Cran safety, but are not intended to replace:
The skill and judgment of a safe operator
When is it acceptable to not use a safety latch on the load hook
When you can show to use is impractical
While interpreting the load chart on your crane, you find the cranes gross capacity is higher than the capacity of the hoist in this situation you should
Use hoist capacity minus all deductions
While using a tool leg bridal if working with a 30° horizontal sling and go as opposed to a 60° horizontal sling angle:
The tension is increased
If determining boom tip elevation is necessary the best way to determine elevation is to:
Use the range diagram
If the anti two block device On the crane you are running quits working, what would be your best option for continued use of the crane
Mark the hoist cable for Operator to see he won’t 2 block
If the horn on the crane you’re running quits working what should you do
Stop crying until horns repaired or replaced
When using preformed IWRC wire rope and connecting wedge socket directly to the hook and ball assembly, what could the effect be
Rotation of the load
Sideloading a crane, the most common effect would be
Swing gear failure
If the powerlines are D energized who can verify this
Line owner
If the length indicator on the crane you were running quits working, what would be your best option for continued use of the crane
Paint or mark the boom with the length
What does D/d Ratio referred to in ready
Diameter of the load divided by the diameter of the sling
