NCCCO Lift Planning and Critical Lift Procedures 4 — Questions and Answers
Question 1: What is the purpose of a pre-lift meeting before a critical lift?
- To assign blame if the lift goes wrong
- To ensure all personnel understand the lift plan, signals, and emergency procedures (Correct answer)
- To negotiate crew pay rates for the lift
- To satisfy union requirements only
Correct answer: To ensure all personnel understand the lift plan, signals, and emergency procedures
The pre-lift meeting ensures that all involved personnel are briefed on the plan, communication methods, and emergency procedures before the lift begins.
Question 2: Ground bearing pressure during lift planning is critical because:
- It determines the color of outrigger pads required
- Insufficient ground support can cause outriggers to sink, leading to crane overturn (Correct answer)
- It affects the crane's electrical system performance
- Higher ground pressure always increases crane capacity
Correct answer: Insufficient ground support can cause outriggers to sink, leading to crane overturn
If the ground cannot support the load imposed by outriggers, the crane can tip or overturn, making ground bearing pressure analysis essential.
Question 3: When planning a lift in wind conditions, the operator should consult the load chart because:
- Wind always increases the crane's rated capacity
- Wind creates additional side loading that can exceed the crane's structural limits (Correct answer)
- OSHA requires wind speed to be recorded on the load chart
- Wind direction determines the color-coded lift zone
Correct answer: Wind creates additional side loading that can exceed the crane's structural limits
Wind imposes lateral forces on the load and crane structure, which can create side loading that exceeds rated capacities shown in the load chart.
Question 4: During a pick-and-carry operation in lift planning, the operator must verify:
- That the load is at maximum boom extension
- That travel terrain is firm, level, and the load is within travel capacity ratings (Correct answer)
- That the load is secured with wire rope instead of synthetic slings
- That no spotter is needed since the operator can see the path
Correct answer: That travel terrain is firm, level, and the load is within travel capacity ratings
Pick-and-carry operations require travel capacity ratings, which differ from static lift ratings, and the travel path must be firm and level.
Question 5: The deduction for the weight of the hook block, rigging, and auxiliary headache ball from the crane's rated capacity is called:
- Structural allowance
- Rigging deduction (Correct answer)
- Crane duty cycle
- Load line weight factor
Correct answer: Rigging deduction
The rigging deduction accounts for the weight of all below-hook components that count against the crane's rated capacity.
Question 6: If a lift plan calls for a 500-ton crane and only a 400-ton crane is available on site, the crew should:
- Proceed with the lift using the smaller crane at reduced speed
- Revise the lift plan with a qualified person to determine if the 400-ton crane can safely perform the lift (Correct answer)
- Split the load into two pieces without re-planning
- Add extra rigging to compensate for the capacity difference
Correct answer: Revise the lift plan with a qualified person to determine if the 400-ton crane can safely perform the lift
Any deviation from the original lift plan must be evaluated by a qualified person to ensure safety before proceeding.
Question 7: What is the primary reason crane operators must understand the load's center of gravity during lift planning?
- To determine paint color for load identification
- To ensure the load hangs level and rigging is loaded evenly (Correct answer)
- To calculate the crane's fuel consumption during the lift
- To determine the minimum number of tag lines required by law
Correct answer: To ensure the load hangs level and rigging is loaded evenly
Knowing the center of gravity ensures the load will be balanced when lifted, preventing uncontrolled tilting and uneven sling loading.
NCCCO Lift Planning and Critical Lift Procedures 4
What is the purpose of a pre-lift meeting before a critical lift?