NCCCO Mobile Crane Operator 3 — Questions and Answers
Question 1: What document must a certified mobile crane operator possess while operating a crane?
- A commercial driver's license only
- Their NCCCO certification card for the specific crane type being operated (Correct answer)
- A college degree in engineering
- Only their employer's ID badge
Correct answer: Their NCCCO certification card for the specific crane type being operated
Operators must carry their NCCCO certification card specific to the type of crane they're operating (lattice boom, telescopic boom, etc.). Different crane types require separate certifications.
Question 2: Before operating any mobile crane, the operator must verify:
- That the crane is the right color
- That annual inspection is current, the crane is set up per manufacturer specs, and all safety devices are functional (Correct answer)
- That there are enough workers on site
- That lunch has been ordered
Correct answer: That annual inspection is current, the crane is set up per manufacturer specs, and all safety devices are functional
Operators must verify current inspection status, proper setup (outriggers, counterweight), functional safety devices (LMI, anti-two-block, limit switches), and that conditions match the load chart configuration.
Question 3: What is the mobile crane operator's responsibility regarding ground conditions?
- Ground conditions are the site manager's problem, not the operator's
- The operator must evaluate whether the ground can adequately support the crane and refuse to operate if conditions are inadequate (Correct answer)
- Only check for underground utilities
- Ground conditions don't affect mobile cranes
Correct answer: The operator must evaluate whether the ground can adequately support the crane and refuse to operate if conditions are inadequate
Operators share responsibility for evaluating ground conditions. Soft, sloped, or undermined ground can cause outriggers to sink or the crane to tip, regardless of what the load chart shows.
Question 4: When operating near other cranes, what is the minimum safe distance to maintain?
- No minimum — cranes can work right next to each other
- Enough distance to prevent booms, loads, or lines from contacting each other, as established in the site lift plan (Correct answer)
- Exactly 10 feet at all times
- Only maintain distance when both are lifting simultaneously
Correct answer: Enough distance to prevent booms, loads, or lines from contacting each other, as established in the site lift plan
Multi-crane sites require coordination to prevent collisions between booms, loads, and wire ropes. The lift plan should establish swing limits, exclusion zones, and communication protocols between operators.
Question 5: What must a mobile crane operator do at the end of each shift?
- Just park the crane and leave
- Secure the crane (set brakes, lower boom or secure per procedure, turn off engine), complete inspection notes, and report any issues (Correct answer)
- Leave the crane running for the next operator
- Nothing — the next shift handles it
Correct answer: Secure the crane (set brakes, lower boom or secure per procedure, turn off engine), complete inspection notes, and report any issues
End-of-shift procedures include securing all crane functions, documenting any issues observed during operation, completing the daily inspection log, and communicating concerns to the incoming operator or supervisor.
Question 6: Can a mobile crane operator delegate their operating responsibilities to an uncertified person?
- Yes, with supervisor approval
- No — only NCCCO-certified operators may operate the crane; certification is non-transferable (Correct answer)
- Yes, for simple lifts under 5 tons
- Yes, if the uncertified person has 10+ years of experience
Correct answer: No — only NCCCO-certified operators may operate the crane; certification is non-transferable
OSHA and NCCCO require that only certified operators operate cranes. Experience alone is not a substitute for certification, and operators cannot delegate control to uncertified personnel.
NCCCO Mobile Crane Operator 3
What document must a certified mobile crane operator possess while operating a crane?