NCCO case studies
NCCO · Put your knowledge to work in context.
The NCCCO certification is a professional credential for crane operators, offered by the National Commission for Certification of Crane Operators. It is aimed at operators who run lattice-boom, telescopic-boom, tower, overhead, and articulating cranes, and at the people who supervise or inspect them. The NCCO case studies are 5 cases and about 2,692 words.
1Outrigger Setup Over a Backfilled Utility Trench
A 90-ton hydraulic truck crane is set up on an asphalt street to lift a 9,600 lb rooftop unit. The boom is 105 ft long, and the pick radius is 50 ft.
553 words, about 3 min2Low-Angle Two-Leg Lift of a Steel Base Plate
A 6,000 lb steel base plate, 8 ft wide by 12 ft long, must be lifted from a truck bed using two lifting eyes located 10 ft apart on the long centerline. The rigger plans two single-leg 1/2 in.
547 words, about 3 min3Pre-Shift Inspection Findings on a Rough-Terrain Crane
At the start of a shift, the operator of a 30-ton rough-terrain crane performs the pre-operational inspection. On the 6x19 IWRC boom hoist rope, the operator finds six broken wires randomly distributed within one lay, plus one broken wire at a valley between strands.
538 words, about 3 min4Radio Failure During a Blind Pick Over a Parapet
A 60-ton all-terrain crane is positioned on a downtown street to lift a 4,500 lb rooftop mechanical unit over a 14 ft parapet. The operator cannot see the landing area or the load once it passes the parapet.
536 words, about 3 min5Boom Contact With an Overhead Distribution Line
A 50-ton telescopic-boom crane is setting a 3,000 lb steel beam at a substation when the boom tip contacts a 12.5 kV overhead distribution line. The operator is in the cab, the outriggers are fully extended, and no fire is visible.
518 words, about 3 min