Operations
Operator Aids
Safety and Signals
Basics of the load chart
All about that BOOM BOOM JIB
100
Rapid acceleration and sudden stops
What is dynamic loading and dynamic unloading
Starting too fast
Swinging too fast
Stopping too fast
Rigging failures/Poor rigging techniques
Wind effects on the boom and the load (think wall panels)
100
A device that measures a crane and load information and warns when a dangerous situation is about to occur is the
What is load moment indicator (LMI)
100
liar liar your pants are on fire!
what is the fire extinguisher?
100
angle formed by the centerline of the boom and the centerline of the jib
What is jib angle
100
Lattice Boom
what is the boom that is lighter but has greater tensile strength and provides better leverage?
200
Whip or auxiliary line.
what is a secondary rope system with a lower capacity than the main rope system?
200
Lowering the boom with the load too close to the boom tip
what is what could two block a crane?
200
Back that crane up
what is three horn beeps
One Stop
Two move it on out move forward
One long job site horn potential hazard or severe weather, tornado, specific to a site
200
radius increases
What is capacity decreases?
200
jib offset increases, capacity _____________
what is Decreases?
300
Repetitive lifting, moving of loads that requires crane capacity to be lowered.
what is Duty Cycle Operation?
cement buckets, grabbing clamps claws, wrecking ball, magnetic clamps and lifters all have a potential for side loading and dragging placing strain on the boom and rope 20% reductions of capacity at that radius and boom angle
300
Were first required on lattice boom cranes built after February 22, 1992
what are Anti-Two-Block warning devices
300
load does not stay in view of the operator
When is a signal person required?
300
Freely suspended load
what is load hanging from the hook that is not in contact with the ground or another object?
all load charts are developed off of a freely suspended load, loaded boom angle and boom length. Do not forget 1 degree of level.
300
extend the height or up and over
What is the main purpose of a jib?
400
crane leverage is greater than the load’s leverage
what is for the crane to complete lifts and operate safely, these leverage conditions must occur?
400
It must be done
it is the law
What does it mean if you see the word “shall” in a regulation?
400
emergency stop all crane movements
what is
400
Grove load charts
the capacity above the bold line represent the
Structural Capacity
note below is stability
the line represents the tipping point or fulcrum
400
“integral holding valve”
what is a safety device that prevents the telescoped boom from retracting if there is a hydraulic failure.
500
the foot of the boom is behind the axis of rotation
What is why can’t most telescopic booms reach a radius equal to boom length?
500
what is extend the boom?
500
Which of the following is not a requirement found in ASME B30.5?
A. Moving parts must be guarded if people can make contact with them
B. Lubrication points should be accessible without removing guards
C. A power line warning must be posted on every crane and visible from the operator’s seat.
D. Floats must be attached to outriggers during use.
E. Operator bodyweight must be considered when determining a crane’s center of gravity
What is D OPERATORS BODY WEIGHT IS NOT CONSIDERED
500
Range diagram
What is a picture or drawing of a crane, looking at it from the side, showing all possible boom and jib combinations?
500
T/F Wind blowing to the side of the boom reduces its strength.
What is TRUE?