WTT Rigging & Lifting Operations

Question 1

What does WLL stand for in the context of rigging equipment?

Accepted Answer

Working Load Limit

Answer

Wire Load Length

Answer

Weight Lift Level

Answer

Weighted Leverage Limit

Question 2

When inspecting wire rope, what is the typical maximum allowable number of broken wires in one rope lay length before it must be removed from service?

Accepted Answer

6 broken wires in one rope lay

Answer

10% of total wires in any strand

Answer

20 broken wires across the entire rope

Answer

Any visible broken wire

Question 3

What is the primary purpose of a rigging plan before lifting heavy wind turbine components such as a nacelle?

Accepted Answer

To identify hazards, assign responsibilities, and define lift procedures before work begins

Answer

To document the lift for OSHA recordkeeping only

Answer

To estimate the cost of the lifting operation

Answer

To determine whether a crane rental is needed

Question 4

Which sling configuration provides the LOWEST effective working load limit relative to the sling's rated capacity?

Accepted Answer

Choker hitch

Answer

Vertical hitch

Answer

Basket hitch

Answer

Double-wrap basket hitch

Question 5

What color identifies a synthetic web sling with a 1-ton (2,000 lb) vertical working load limit per the Web Sling and Tiedown Association (WSTDA) standard?

Accepted Answer

Green

Answer

Red

Answer

Purple

Answer

Gray

Question 6

When rigging with a two-leg bridle sling, what included angle between the legs is generally recommended to maintain safe load distribution?

Accepted Answer

120 degrees or less

Answer

90 degrees or less

Answer

60 degrees or less

Answer

45 degrees or less

Question 7

What is the purpose of a shackle's safety pin or bolt when used in a lifting application?

Accepted Answer

It secures the screw pin and prevents it from backing out under load

Answer

It increases the shackle's working load limit

Answer

It prevents the shackle bow from rotating during the lift

Answer

It provides a visual indicator that the shackle is rated for lifting