CCO operations
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| When leveling a crane on outriggers, check the level in one direction, then rotate the upper works: | 90 degrees
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| Modifications to a crane that might affect its capacity or safe operations are permissible as long as: | Manufacturer has given its written approval
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| What is the far left lever for on a crawler? | swing
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| If the operator makes three audible signals when moving a crane, he/she intends to: | back up
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| What is the best way to determine the weight of a load? | obtain a certified load weight and add rigging
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| When the rotation of a load may be hazardous, the operator should; | ensure that a tagline is used
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| An auxiliary boom head/point is intended to: | be used with auxiliary hoist and keep it separated from main line
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| When operating a RT and extending outriggers from the upper, you should: | make visual contact or post a signal person.
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| According to OSHA 1926. 1417, where must the operator's manual be kept? | in the crane at all times
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| When rigging to a non-symmetrical load, the center of gravity of the load should; | be in line with the crane's hook
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| All hazards and problems that are found on the worksite should be identified: | at the preoperational worksite inspection
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| Load indicating mechanisms, overload warning systems and other automatic safety devices have improved crane safety but are not intended to replace what? | the skill and judgment of a safe operator
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| Which is required before beginning a multiple-crane lift according to OSHA 1926. 1432? | The operation must be planned by a qualified person
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| When retracting the boom on a hydraulic crane, the hook and load will do what? | lower
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| If your machine is not level and you swing a load from the high side to the low side, what will happen to the load radius? | radius will increase
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| If a telescopic boom crane is approaching a "two blocking" condition, what should you do? | retract the boom
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| How much may the throat of a crane hook open beyond its original dimension before being replaced according to OSHA 1910.180? | 15%
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| When a load is lifted out of the water, what happens to the load on the crane? | increase
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| According to OSHA 1926.1425 (d), when landing a load, only employees needed to receive a load are permitted to b within what? | the fall zone
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| What is the best method for securing timber blocking or mats together? | bolts
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| What must approve adding extra counterweight to a crane? | crane manufacturer
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| When a crane is in daily use, how often must the hook be inspected? | daily
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| When rigging a load, where should the center of gravity of the load be? | below the sling attachment points
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| When determining what position to dog the machine over night and high winds are expected; | follow the manufacturers recommendations
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| For rubber-tired cranes working "on rubber" (not on outriggers), the part of the load chart governed by stability is based on what percentage of he crane's capacity? | 75%
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| Operator aids, such as load indicators and anti-two block devices, must be inspected how often? | daily
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| According to ASME B30.5 Mobile Crane Standard, a crane operator must have a physical examination how often? | every 5 years (CDL medical every 2yrs, crane operator medical every 3yrs)
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| According to ASME B30.5 Mobile Crane Standard, the load must not be lowered below the point where there is how many full wraps of rope left on the drum? | two
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| blocking under the outrigger pads/float shall be: | -rigid, tightly spaced, and no defects -at least 3 times the size of the pad -sufficient to support the crane and the load
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| When used for lifting personnel, the crane hook must: | have a lockable latch
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| When handling materials containing acids or strong chemicals, which type of slings should you NOT use? | synthetic
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| What action does a signal person intend the operator to perform if he extends his arm, makes a fist with his hand and sticks his thumb down? | booming down
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| According to OSHA 1926.1431 a qualified person must determine if it is unsafe to lift personnel when wind sped exceeds what? | 20mph
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| When is a crane hook considered unserviceable? | the throat dimension is in excess of 10%, wear in saddle area is greater than 10%
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| When leaving any crane unattended for short periods of time, what is the operator required to do? | lower the load to the ground and set all brakes and locking devices
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| When a mobile crane is put on a barge for lifting operations: | the crane must be secured or tied down to the barge
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| When the crane's level indicator is not working properly: | it must be tagged out or removed until repaired
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| What is the best procedure to follow when underground utilities may be present? | Contact local utility company
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| In order to control the drift of the load, what must the operator do? | keep the boom tip over the load
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| What type of operator aid (safety device) is required when hoisting personnel in a man basket? | anti two-block device
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| If the rigger has a tag line in one had and signals the operator with one fist in front of the chest with thumb tapping chest, what does this indicate? | extend boom
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| Personnel platforms shall support with failure its own weight with at least: | five times the maximum intended load
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| According to the ASME B30.5 Mobile Crane Standard, which person must establish that the load weight does not exceed the cranes rated capacity? | the prson responsible for the lift
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| The importance of leveling the crane cannot be over emphasized. Of the following operations, which loses the greatest amount of capacity when out of level 2%? | long boom maximum radius
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| Which would be considered "duty cycle" operation? | continuously pouring concrete
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| Which of the following is most likely to occur during the duty cycle lifting? | exceeding crane capacity due to cycling loads
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| When operating a rough-terrain crane on rubber, when is the crane most likely to lose backward stability? | long boom, minimum radius over side
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| Which of the following will most likely occur when a telescopic boom crane, with independent boom extension controls, does not have each section telescoped equally? | LMI will not read correctly
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| What happens to the load radius when the jib offset is changed from 0 degrees to 15 degrees? | radius decreases
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