CTSP Aerial Lift Operations Safety 2 — Questions and Answers
Question 1: What is the maximum wind speed at which most aerial lift manufacturers allow safe operation?
- 25 mph (Correct answer)
- 30 mph
- 40 mph
- 50 mph
Correct answer: 25 mph
Most aerial lift manufacturers specify a maximum wind speed of 25 mph (40 km/h) before operations must be suspended.
Question 2: When must a competent person inspect an aerial lift?
- Once per week during the work season
- Before each use each day (Correct answer)
- Only after a reported malfunction
- Monthly per OSHA requirements
Correct answer: Before each use each day
ANSI A92.2 and OSHA require a competent person to inspect aerial lifts before each day's use or at the beginning of each shift.
Question 3: Which document governs the safe use of vehicle-mounted elevating and rotating work platforms in the U.S.?
- ANSI Z133
- ANSI A92.2 (Correct answer)
- OSHA 1910.67
- ANSI A10.31
Correct answer: ANSI A92.2
ANSI A92.2 is the industry standard specifically covering vehicle-mounted elevating and rotating work platforms (aerial lifts).
Question 4: A bucket truck is parked on a 5-degree side slope. The manufacturer's limit is 3 degrees. What should the operator do?
- Proceed cautiously at reduced height
- Reposition the truck to a flatter surface or use outriggers fully extended (Correct answer)
- Set the parking brake and proceed normally
- Reduce load in the bucket by 50% and continue
Correct answer: Reposition the truck to a flatter surface or use outriggers fully extended
Operating beyond the manufacturer's rated side slope limit requires repositioning or proper leveling; exceeding the limit risks tip-over regardless of other precautions.
Question 5: What type of fall protection is required for workers in an aerial lift bucket?
- Safety net below the work zone
- Personal fall arrest system anchored to the boom or bucket (Correct answer)
- Positioning device anchored to the truck frame
- No fall protection is needed inside an enclosed bucket
Correct answer: Personal fall arrest system anchored to the boom or bucket
OSHA 1910.67 requires workers in aerial lift buckets to wear a body belt or harness with a lanyard attached to the boom or bucket, not to an adjacent structure.
Question 6: Why should workers in an aerial lift never tie off to an adjacent structure or tree limb for added support?
- It damages the tree bark unnecessarily
- Movement of the boom could leave the worker suspended outside the basket (Correct answer)
- It violates property owner agreements
- The knot could snag and slow basket movement
Correct answer: Movement of the boom could leave the worker suspended outside the basket
Tying off to a fixed structure while in a moving boom can result in the worker being dragged out of the basket if the boom swings or retracts.
Question 7: Which action is prohibited when using an aerial lift near energized power lines?
- Working at or above the power line elevation (Correct answer)
- Using a fiberglass boom for insulation
- Maintaining minimum approach distance
- Performing a job hazard analysis before starting
Correct answer: Working at or above the power line elevation
Working at or above energized power line elevation without qualified electrical work authorization and proper insulated equipment is prohibited and extremely dangerous.
CTSP Aerial Lift Operations Safety 2
What is the maximum wind speed at which most aerial lift manufacturers allow safe operation?