NCCCO Overhead Crane case studies
NCCCO Overhead Crane · Put your knowledge to work in context.
The NCCCO Overhead Crane Operator certification is a third-party credential for people who run bridge and gantry cranes - the types that travel on runway rails in shops, yards, warehouses, and industrial plants. It serves both new operators who need to prove competence and experienced hands whose employers or site owners require a recognized card, and it is commonly written into contractor qualification and insurance requirements. The NCCCO Overhead Crane case studies are 5 cases and about 3,113 words.
1Outdoor Gantry Lift in Rising Wind
An outdoor 10-ton gantry crane on rail is scheduled to move a 6 ft by 10 ft solid steel panel (2,400 lb) from a laydown area onto a truck bed 12 ft away. The panel will be lifted on edge, giving about 60 sq ft of sail area.
699 words, about 3 min2Inspection Findings on a 5-Ton Bridge Crane
A monthly inspection is being done on a 5-ton single-girder bridge crane. Findings: the 1/2 in 6x37 IWRC hoist rope has 7 broken wires distributed in one lay, 3 broken wires in one strand, a 4 in long birdcage 6 ft from the drum, and a measured diameter of 0.470 in at the birdcage.
643 words, about 3 min3Two-Leg Bridle on an Off-Center Load
An 8,000 lb machine skid has two lifting lugs 10 ft apart. The center of gravity is 3 ft from the left lug and 7 ft from the right lug.
605 words, about 3 min4Reeving and Capacity on a 25-Ton Bridge Crane
A double-girder bridge crane has a bridge placard reading 25 tons (50,000 lb). The hoist data plate gives two reeving options: 2-part reeving, rated 25,000 lb, and 4-part reeving, rated 50,000 lb.
558 words, about 3 min5Blind Lift with Lost Radio Communication
A 3,000 lb die half must be set on a press bed that the cab operator cannot see because of a wall. A designated signal person on the floor is using a two-way radio and has been briefed on the travel path.
608 words, about 3 min