NCCCO TELESCOPIC BOOM CRANE

NCCCO TELESCOPIC BOOM CRANE

EXAM ACCURATE

ANSWERS

Anti two-block device - ACCURATE ANSWERS✔✔ An anti two-block devise must be provided when hook-suspended personnel platforms are lifted with a telescopic boom crane.Hydraulic functions disabled - ACCURATE ANSWERS✔✔ Hoist, extend the boom, boom down are disabled when the anti two-block device is activated.Maximum speed for pick-and-carry operations - ACCURATE ANSWERS✔✔ The manufacturer's recommended speed limit is the safest maximum speed for a telescopic boom crane performing pick-and- carry operations.Blocking under outrigger floats/pads - ACCURATE ANSWERS✔✔ The blocking should be sufficient to support/stabilize the crane.Boom extension stowed position - ACCURATE ANSWERS✔✔ When a boom extension is in the stowed position, it is pinned to the boom base section. 1 / 2

tipping capacity - ACCURATE ANSWERS✔✔ When engaged in a pick-and-carry operation, the tipping capacity is based on 75% of the total tipping capacity.Boom angle indicator - ACCURATE ANSWERS✔✔ According to OSHA 1926 sub-part cc, all telescopic boom cranes must be equipped with a boom angle indicator.Jib capacities - ACCURATE ANSWERS✔✔ Jib capacities are based on structural strength.Ground pressure when lifting over a corner - ACCURATE ANSWERS✔✔ Ground pressure gene by the crane can approach a weight that is equal to the weight of the crane and suspended load.Purpose of the boom length indicator - ACCURATE ANSWERS✔✔ Indicates the extended length of the boom.Maximum ground-bearing pressure - ACCURATE ANSWERS✔✔ The maximum ground-bearing pressure occurs when the load is over a corner.Capacity reduction of telescopic boom extension - ACCURATE ANSWERS✔✔ An erected telescopic boom extension becomes a capacity reduction when it is not used to make the lift.

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