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CCO operations
| Question | Answer |
|---|---|
| When leveling a crane on outriggers, check the level in one direction, then rotate the upper works: | 90 degrees |
| Modifications to a crane that might affect its capacity or safe operations are permissible as long as: | Manufacturer has given its written approval |
| What is the far left lever for on a crawler? | swing |
| If the operator makes three audible signals when moving a crane, he/she intends to: | back up |
| What is the best way to determine the weight of a load? | obtain a certified load weight and add rigging |
| When the rotation of a load may be hazardous, the operator should; | ensure that a tagline is used |
| An auxiliary boom head/point is intended to: | be used with auxiliary hoist and keep it separated from main line |
| When operating a RT and extending outriggers from the upper, you should: | make visual contact or post a signal person. |
| According to OSHA 1926. 1417, where must the operator's manual be kept? | in the crane at all times |
| When rigging to a non-symmetrical load, the center of gravity of the load should; | be in line with the crane's hook |
| All hazards and problems that are found on the worksite should be identified: | at the preoperational worksite inspection |
| 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 |
| Which is required before beginning a multiple-crane lift according to OSHA 1926. 1432? | The operation must be planned by a qualified person |
| When retracting the boom on a hydraulic crane, the hook and load will do what? | lower |
| 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 |
| If a telescopic boom crane is approaching a "two blocking" condition, what should you do? | retract the boom |
| How much may the throat of a crane hook open beyond its original dimension before being replaced according to OSHA 1910.180? | 15% |
| When a load is lifted out of the water, what happens to the load on the crane? | increase |
| 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 |
| What is the best method for securing timber blocking or mats together? | bolts |
| What must approve adding extra counterweight to a crane? | crane manufacturer |
| When a crane is in daily use, how often must the hook be inspected? | daily |
| When rigging a load, where should the center of gravity of the load be? | below the sling attachment points |
| When determining what position to dog the machine over night and high winds are expected; | follow the manufacturers recommendations |
| 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% |
| Operator aids, such as load indicators and anti-two block devices, must be inspected how often? | daily |
| 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) |
| 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 |
| 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 |
| When used for lifting personnel, the crane hook must: | have a lockable latch |
| When handling materials containing acids or strong chemicals, which type of slings should you NOT use? | synthetic |
| 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 |
| According to OSHA 1926.1431 a qualified person must determine if it is unsafe to lift personnel when wind sped exceeds what? | 20mph |
| When is a crane hook considered unserviceable? | the throat dimension is in excess of 10%, wear in saddle area is greater than 10% |
| 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 |
| When a mobile crane is put on a barge for lifting operations: | the crane must be secured or tied down to the barge |
| When the crane's level indicator is not working properly: | it must be tagged out or removed until repaired |
| What is the best procedure to follow when underground utilities may be present? | Contact local utility company |
| In order to control the drift of the load, what must the operator do? | keep the boom tip over the load |
| What type of operator aid (safety device) is required when hoisting personnel in a man basket? | anti two-block device |
| 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 |
| Personnel platforms shall support with failure its own weight with at least: | five times the maximum intended load |
| 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 |
| 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 |
| Which would be considered "duty cycle" operation? | continuously pouring concrete |
| Which of the following is most likely to occur during the duty cycle lifting? | exceeding crane capacity due to cycling loads |
| When operating a rough-terrain crane on rubber, when is the crane most likely to lose backward stability? | long boom, minimum radius over side |
| 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 |
| What happens to the load radius when the jib offset is changed from 0 degrees to 15 degrees? | radius decreases |
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