NCCCO Mobile Crane Inspections: Questions and Answers, Exams of Mobile Computing

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NCCCO Mobile Crane Inspections || 25

QUESTIONS|| CORRECT ANSWERS||

How does the operator verify the LMI's boom length or load radius reading? - ANSWER Actual measurements On whose recommendations should a preventive maintenance program be set-up? - ANSWER Crane manufacturer The proper way to calibrate a boom angle indicator is; - ANSWER Using a level, raise the boom to horizontal and set the indicator at 0 degree

1. Eccentric main boom tip reeving causes; A. Increase hoisting sheave wear B. Increase wire rope wear C. Twisting of the boom

D. All of above - ANSWER D. all of the above A frequent inspection is defined as - ANSWER Daily to monthly Load test for cranes should not exceed_____________% of the manufacturer's rating. - ANSWER 110% B30.5 requires load indicator on cranes when it's maximum capacity exceeds; - ANSWER 3 tons and above Which statement best describes how OSHA 1926.1400 looks at a crane manufacturer's instructions, specifications, and limitations? - ANSWER They must be followed exactly as law Where does OSHA 1926.1400 require hand signals to be posted? - ANSWER On the equipment or conspicuously posted in the vicinity of the hoisting operations According to OSHA 1910.180 are cranes allowed to be overloaded? - ANSWER Yes, but only during testing and not over 110% of rated capacity

Excessive side loading of booms by freely suspended load is caused by; - ANSWER Starting or stopping the swing to rapidly When telescoping the boom section of an R/T, which section should be telescoped first? - ANSWER All sections should be telescoped equally When should the operator use the seat of his pants technique; - ANSWER Never Is the load applied to the crane when determining the loaded boom angle? - ANSWER Yes How do outriggers increase the tipping capacity of a crane? - ANSWER By moving the tipping axis farther away from the center of gravity of the crane How often must periodic inspections be conducted? - ANSWER Monthly to annually How often must periodic inspections be conducted? – ANSWER When push the far left hand control lever forward the crane action will be; - ANSWER Swing toward the boom

What is the maximum amount of twist allowed in a hook? - ANSWER 0 degrees in plane of hook What is the maximum amount a hook throat can open up? - ANSWER 5% According to OSHA 1926.1400 who can do annual inspections? - ANSWER Qualified person According to ASME B30.5 an operator aid (such as ATB, LMI) shall be inspected and tested at least once every________ by a qualified person. - ANSWER 12 months What is the difference between an anti-two-block warning device and an anti-two-block prevention system? - ANSWER Warning device only warns, but prevention system will stop the operation The primary purpose for a rooster or Auxiliary boom point is to; - ANSWER Separate the hoist lines When the number of layers of rope on a drum increases the; - ANSWER Line pull decreases