NCCCO Service Truck Crane Operator Test 1 5 — Questions and Answers
Question 1: What is the correct hand signal to tell the crane operator to 'boom down'?
- Thumb pointing down with fist closed (Correct answer)
- Extended arm with palm down, moving downward repeatedly
- Both arms extended horizontally, then lowered
- Pointing to the ground with index finger and rotating
Correct answer: Thumb pointing down with fist closed
The standard ASME/OSHA hand signal for 'boom down' (lower boom) is a closed fist with thumb pointing downward.
Question 2: When is an operator required to have a load line handler or rigger present?
- Only when lifting loads over 5,000 lbs
- Whenever the hook is not clearly visible to the operator throughout the lift (Correct answer)
- During all lifts regardless of visibility
- Only when working near overhead power lines
Correct answer: Whenever the hook is not clearly visible to the operator throughout the lift
A signal person is required whenever the load or the path of travel is not clearly visible to the operator at all times during the lift.
Question 3: The minimum required clearance from an energized power line rated at 50 kV is:
- 5 feet
- 10 feet (Correct answer)
- 15 feet
- 20 feet
Correct answer: 10 feet
OSHA 1926.1408 requires a minimum 10-foot clearance from power lines up to 50 kV unless the line is de-energized and grounded or an insulating barrier is installed.
Question 4: What action should an operator take if the crane contacts an energized power line?
- Jump from the cab immediately
- Remain in the cab and warn others not to touch the crane (Correct answer)
- Attempt to back the crane away from the line
- Shut off the engine and exit through the cab door
Correct answer: Remain in the cab and warn others not to touch the crane
If the crane contacts a live power line, the operator must stay in the cab to avoid ground potential differences, and warn others to stay clear.
Question 5: Which of the following is a disqualifying defect for a wire rope that requires immediate removal from service?
- Light surface rust on outer wires
- Six randomly distributed broken wires in one rope lay (Correct answer)
- Slight stiffness in a dry rope
- Minor abrasion marks on the outer wires
Correct answer: Six randomly distributed broken wires in one rope lay
ASME B30.22 disqualifies a wire rope when six or more randomly distributed broken wires are found in one rope lay, indicating significant structural degradation.
Question 6: What does the term 'rated capacity' on a service truck crane load chart assume about outrigger deployment?
- Outriggers are partially extended for stability
- Outriggers are fully extended and pads are properly set (Correct answer)
- The crane is operating on rubber tires without outriggers
- Outriggers are extended to the manufacturer's minimum setting
Correct answer: Outriggers are fully extended and pads are properly set
Load chart rated capacities typically assume outriggers are fully extended and properly supported unless the chart provides separate on-rubber ratings.
Question 7: An operator's NCCCO certification for a service truck crane is valid for how long before renewal is required?
- 1 year
- 3 years
- 5 years (Correct answer)
- 10 years
Correct answer: 5 years
NCCCO certifications are valid for five years, after which operators must successfully complete the recertification process.
NCCCO Service Truck Crane Operator Test 1 5
What is the correct hand signal to tell the crane operator to 'boom down'?