Hoisting and Rigging Practices Flashcards

What is meant by the 'working load limit' of rigging hardware?

Answer: The maximum load that should be applied under normal working conditions, which includes a design safety factor

Working Load Limit already includes a safety factor (typically 5:1) and represents the maximum load for normal conditions.

What is the proper method for storing rigging equipment between uses?

Answer: Store clean, dry equipment in a protected location organized by type, with synthetic slings away from chemicals and UV light

Proper storage prevents deterioration from moisture, UV exposure, chemical contact, and physical damage.

How does temperature affect the capacity of rigging equipment?

Answer: Extreme cold makes steel brittle and reduces strength, while extreme heat lowers steel's yield point and degrades synthetic sling fibers

Both extreme cold and heat reduce rigging equipment capacity.

What is the function of a load cell in tower hoisting operations?

Answer: It measures the actual force/weight being applied to the rigging system in real time, allowing verification that the load matches calculations

Load cells provide real-time measurement of actual forces in the rigging system.

What are the OSHA requirements for hoisting personnel near tower work areas?

Answer: Personnel hoisting requires a specifically designed man-basket or personnel platform meeting OSHA 1926.1431 requirements, with additional safety measures

Hoisting workers requires equipment specifically designed and tested for personnel lifting.

What is the purpose of a pre-lift meeting before tower hoisting operations?

Answer: To review the lift plan, assign roles, confirm communication, and ensure all crew members understand the sequence of operations and emergency procedures

The pre-lift meeting ensures every person involved understands the plan, their role, and what to do if something goes wrong.