NCCCO OSHA Crane Regulations 29 CFR 1926 5 — Questions and Answers
Question 1: Under 29 CFR 1926.1410, a critical lift plan is required when a lift exceeds what percentage of the crane's rated capacity?
- 75%
- 85%
- 90% (Correct answer)
- 100%
Correct answer: 90%
1926.1410 defines a critical lift as one that exceeds 90% of the crane's rated capacity, requiring additional planning and controls.
Question 2: According to 29 CFR 1926.1419, which hand signal indicates 'Stop' during crane operations?
- Arm extended horizontally, finger pointing in direction of swing
- Arm extended, palm down, moving arm back and forth horizontally (Correct answer)
- Both fists in front of body with thumbs pointing outward
- One arm extended upward with index finger pointing up, circular motion
Correct answer: Arm extended, palm down, moving arm back and forth horizontally
The standard OSHA hand signal for 'Stop' is the arm extended with palm facing down, moved back and forth horizontally.
Question 3: 29 CFR 1926.1441 applies to dedicated pile-driving equipment. Under this section, when must the leads be secured?
- Only during transit on public roads
- Whenever the crane is not actively driving piles and personnel are working nearby
- At the end of each work shift and during breaks (Correct answer)
- Only when wind speeds exceed 30 mph
Correct answer: At the end of each work shift and during breaks
1926.1441 requires pile-driving leads to be secured at the end of each shift and during rest periods to prevent uncontrolled movement.
Question 4: Under 29 CFR 1926.1426, when lifting personnel with a crane, what is the maximum allowable speed for lowering and raising the personnel platform?
- The speed must not exceed the rated load line speed of the crane
- Personnel platforms must be moved at a controlled, slow speed with no specific numeric limit (Correct answer)
- No more than 50 feet per minute
- No more than 100 feet per minute
Correct answer: Personnel platforms must be moved at a controlled, slow speed with no specific numeric limit
1926.1426 requires personnel platforms to be raised and lowered in a slow, controlled manner; no specific numeric speed limit is stated, but erratic or excessive speed is prohibited.
Question 5: According to 29 CFR 1926.1413, what is the minimum number of wire rope dead wraps that must remain on the drum at all times during operation?
- 1 wrap
- 2 wraps (Correct answer)
- 3 wraps
- 4 wraps
Correct answer: 2 wraps
1926.1413 requires a minimum of two dead wraps of wire rope to remain on the drum so the rope termination is not subjected to load stress.
Question 6: Under 29 CFR 1926.1407, who may authorize a crane to work closer than the standard Table A power line clearance distances?
- The OSHA area director
- The crane operator using professional judgment
- The utility owner or electrical utility operator, with required procedures followed (Correct answer)
- The project's licensed electrician
Correct answer: The utility owner or electrical utility operator, with required procedures followed
1926.1407 permits reduced power line clearances only when the utility owner or electrical utility confirms the line is de-energized or grants specific authorization with procedures.
Question 7: 29 CFR 1926.1418 addresses authority and responsibility during crane operations. If an operator determines that a lift is unsafe, what action must the operator take?
- Complete the lift and document the safety concern afterward
- Proceed if a supervisor approves in writing
- Refuse to perform the lift until the unsafe condition is corrected (Correct answer)
- Reduce the load and attempt the lift
Correct answer: Refuse to perform the lift until the unsafe condition is corrected
1926.1418 explicitly gives the operator the authority and responsibility to refuse any lift believed to be unsafe, and prohibits retaliation for exercising this right.
NCCCO OSHA Crane Regulations 29 CFR 1926 5
Under 29 CFR 1926.1410, a critical lift plan is required when a lift exceeds what percentage of the crane's rated capacity?