NCCCO Core Sample Test: Questions and Answers for Crane Operators, Exams of Biology

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NCCCO Core

sample test

QuestionS AND

ANSWERS

A frequent inspection is: - answer Daily to monthly

1. What action does a signal person intend the operator to perform if he extends his arm at shoulder height, makes a fist with his hand, and sticks his/her thumb up? - answer Boom Up (Appendix A to Subpart CC of Part 1926--Standard Hand Signals)
2. When hoisting personnel, within what percentage of level must a telescopic boom crane be in order for the gross ratings in the load chart to remain valid? - answer 1% (1926.1431(c)(1) The equipment must be uniformly level, within one percent of level grade, and located on footing that a qualified person has determined to be sufficiently firm and stable.)
3. The load line of the crane you're operating contacts an energized power line. There's no sign of any other danger, such as fire. What should you do? - answer Stay in the cab until the lines are de-energized.

4. According to OSHA 1926.1413, how many randomly distributed broken wires in rotation-resistant rope are cause for replacement of the rope? - answer 2 broken wires in 6 rope diameters
5. What is the net capacity of a crane on main boom unless the manufacturer states otherwise? - answer The capacity listed in the load chart minus the weight of the rigging and all attachments What may happen to a properly rigged load when lifted off the ground unless the operator takes account of boom deflection - answer It could swing out away from the crane Who should an operator respond to a "stop" signal from? - answer Anyone Which area do truck cranes without a 5th outrigger generally have no lifting capacity unless the manufacturer states otherwise? - answer The front What is the definition of "operating radius?" - answer The distance from the center of rotation of the crane to the center of gravity of the load What applies to the capacities below the bold line shown on a load chart? - answer They are based on the stability of the crane In which quadrant are rough terrain crane capacities generally greater? - answer Over the front According to federal requirements, under what conditions is it okay for a person to ride the headache ball? - answer It is never okay By what percentage do most manufacturers require a crane's load chart capacity to be reduced by for duty cycle operations such as high-volume concrete placement? - answer 20%

From which two points should the boom be measured? - answer From the boom hinge pins to the center of the boom tip sheave What is the preferred method of installing wire rope from a reel onto a hoist drum? - answer The rope runs from the top of the reel to the top of the drum Over which quadrant are truck crane capacities usually greater? - answer Over the rear.

18. According to OSHA, which accessible area of an operating crane must always be barricaded? - answer The swing radius of the rear of the rotating superstructure What is the OSHA regulation governing cranes in construction? - answer

Under which circumstance is a crack in the windshield of a crane cab okay? - answer As long as it causes no visible distortion that would interfere with safe operations Under which circumstance does OSHA permits hoisting of personnel by crane? - answer As long as there is no less hazardous or practicable way Unless the manufacturer states otherwise, what crane capacity chart is appropriate when a crane is set up with 3 of its 4 outriggers extended and the fourth is retracted? - answer On-rubber chart According to OSHA, while hoisting personnel, the total load must not exceed what percentage of the crane's rated capacity?" - answer 50%

When is side loading of crane booms permitted? - answer Only with freely suspended loads What is indicated if an operator makes two audible signals when moving a crane? - answer He/she intends to go ahead When may blocking (cribbing) be placed under outrigger beams? - answer Never What is the result of placing timber blocking under the tips of the tracks on a crawler crane? - answer Makes the crane more stable According to ASME, what percentage of the manufacturer's crane rating must not be exceeded if a load test is done on a repaired crane? - answer 110% Where is the tipping axis of a crawler crane located? - answer It depends if the idler or sprocket are in line or offset from the track rollers What should be done with materials placed under overhead energized power lines? - answer Not be lifted by crane Where should the crane's outrigger pads or tracks be placed when working at ground floor level near a cellar wall? - answer At least as far back as the depth of the wall below ground How should the wheels of a crane be positioned when it is set up for working on outriggers? - answer Just high enough off the ground to relieve the tires of crane weight What happens to ground bearing pressure if you move a crawler crane from soft ground to harder ground? - answer It increases

When may a swivel be used with rotation resistant wire rope? - answer If the rope manufacturer approves What should you do on pick and carry operations? - answer Keep the boom as short as possible What boom position would cause the greatest ground pressure when lifting with crawler cranes? - answer Over the corner Where should the hook be positioned when preparing to hoist a light load? - answer Directly above the load's center of gravity According to OSHA 1926.1408, what minimum clearance must be maintained between any part of the crane/load and 850kV energized overhead power lines. - answer 45 ft. How many parts of line are required to hoist a 36,500 lb. load if the maximum allowable line pull is 9,000 lbs.? - answer 5 What determines the amount of deduction required for an erected jib that is not being used? - answer The effective weight of the jib What capacity should you use when the boom length of the crane falls between the lengths listed in the load chart? - answer The next longest or the next shortest boom length, whichever is the lower capacity When is it okay to temporarily bypass a crane's overload warning system? - answer During assembly/disassembly operations What happens to the leverage of the load on a crane as the boom is being lowered? - answer It increases

Where are the Standard Method hand signals found? - answer a. OSHA Subpart CC What should an operator do if a crane's load moment indicator (LMI) malfunctions? - answer Cease crane operations and report the condition to the supervisor When may a swivel be used with rotation resistant wire rope? - answer According to OSHA, while hoisting personnel, the total load must not exceed what percentage of the crane's rated capacity?" - answer Nccco - answer NCCCO NCCCO - answer NCCCO The primary purpose for a rooster sheave or Auxiliary boom point sheave is to: - answer Separate the hoist lines What is the minimum allowable distance from the crane and power lines under 50k - answer 10 ft. When an operator leaves the crane, he must first: - answer ANSI B30.5- 3.1.2, Put the load on the ground and put all dogs or pawls in. According to OSHA 1926.1431(k)(8)(i) personnel platform lift shouldn't be made with wind in excess of: - answer 20 MPH 1926.1431(k)(8)(i) Wind. When wind speed (sustained or gusts) exceeds 20 mph at the personnel platform, a qualified person must determine if, in light of the wind conditions, it is not safe to lift personnel.

When operating a crawler crane, what is the most unstable allowable quadrant of operation - answer over the side When should a tagline be used - answer When rotation of load would be dangerous 1926.1417(w)&1910.180(h)(3)(xvi) A tag or restraint line must be used if necessary to prevent rotation of the load that would be hazardous. What is the minimum design factor required for a right regular lay main, boom or auxiliary hoist rope - answer 3. How does the operator verify the LMI's boom length or load radius reading - answer Actual measurements If the rated capacity of the crane is above the solid line or within the shaded areas or has an asterisk next to it, this means the capacity is based on: - answer The crane capacities in the shaded areas above the bold lines, are based on structural strength or hydraulic limitations. The cranes capacities below the bold lines are based on stability ratings. What are the inspection criteria for running ropes where broken wires are concerned? - answer 1926.1413(a)(2)(ii)(A)(1) Six randomly distributed broken wires in one rope lay or three broken wires in one strand in one rope lay What are the inspection criteria for rotation resistant ropes where broken wires are concerned? - answer 1926.1413(a)(2)(ii)(A)(2) Two randomly distributed broken wires in six rope diameters or four randomly distributed broken wires in 30 rope diameters.

What are the inspection criteria for standing or pendant ropes where broken wires are concerned? - answer 1926.1413(a)(2)(ii)(A)(3) More than two broken wires in one rope lay located in rope beyond end connections and/or more than one broken wire in a rope lay located at an end connection. A diameter reduction of more than ____ from nominal diameter. - answer 1926.1413(a)(2)(ii)(B) 5% In a range diagram, boom length and angle can be used to determine - answer load radius If a crane is not set up level, and the operator swings a load from the high side to the low side, the load radius will - answer increase Most crane manufacturers reduce load capacity for duty-cycle operations because: - answer Side loading, forces may occur Only approved attachments or extra counterweights made by the manufacturer should be place on the rear if the crane because - answer they could cause a backward stability problem When working on outriggers, the only time they should be less than fully extended is when: - answer there is a load chart for this operation When working on outriggers, the only time they should be less than fully extended is when: - answer there is a load chart for this operation Backward stability of the crane is tested with: - answer Basic boom at maximum angle with no load over the side

When using load capacity charts, what does the term " jib angle to ground" refer to - answer Main boom angle minus the jib's offset When testing a man-basket, how long must the test pick be maintained - answer 1926.1431(j)(2) The platform must be lowered by controlled load lowering, braked, and held in a suspended position for a minimum of five minutes with the test load evenly distributed on the platform. All sheaves used in the boom hoist reeving system must have a rope pitch diameter of not less than __ times the nominal diameter of the rope used if rotation resistant rope is used. - answer 1926.1414(e)(4)(ii)(D) 18 What is the minimum pitch diameter for load hoisting sheaves - answer not less than 18 times rope diameter What is the minimum pitch diameter for boom hoisting sheaves - answer not less than 15 times rope diameter What is the minimum pitch diameter for load block sheaves - answer not less than 16 times rope diameter Outrigger blocking should be at least - answer 3X pad size LMI shall be installed on cranes with a lifting capacity of: - answer 3 tons and above When lifting personnel, the crane's hook must be the type that: - answer can be closed and locked Allowable jib backlash is how much - answer 5 degrees

Crane must be level within what % upgrade - answer 1% A periodic inspection is: - answer Monthly to annually Test loads shall not exceed what % of manufacturer's load ratings - answer 110% Cranes idle for more than 6 months must have what inspections performed - answer Frequent, periodic, and wire rope T or F; Rotation resistant ropes may be used as boom hoist reeving when load hoists are used as boom hoists for attachments such as luffing attachments or boom and mast attachment systems. - answer 1926.1414(e) (4)(ii) T What is the safety factor of rotation resistant rope while lifting personnel? - answer 10: