WTT Rigging & Lifting Operations 2

Question 1

What is the ASME standard that governs the design, construction, and use of below-the-hook lifting devices used on wind turbine components?

Accepted Answer

ASME B30.20

Answer

ASME B30.20 specifically covers below-the-hook lifting devices, which include custom lifting beams, spreader bars, and other engineered attachments.

Question 2

When hoisting a wind turbine blade, what is the primary function of a tag line attached to the load?

Accepted Answer

To control rotation and prevent the load from swinging into structures

Answer

Tag lines are used to control load swing and rotation, keeping the suspended blade away from personnel and structures during the lift.

Question 3

What condition requires a synthetic web sling to be immediately removed from service?

Accepted Answer

Acid or caustic burns, melting, or charring of fibers

Answer

Chemical burns (acid/caustic) or thermal damage (melting, charring) compromise the structural integrity of synthetic fibers and require immediate removal from service.

Question 4

What is the purpose of using a corner saddle or edge protector when rigging with a synthetic sling over a structural beam?

Accepted Answer

To protect the sling from cuts caused by sharp edges that could cause failure

Answer

Sharp corners and edges can cut into synthetic sling fibers, dramatically reducing load capacity, so edge protectors preserve sling integrity.

Question 5

What does the term 'de-rating' refer to when applied to rigging hardware?

Accepted Answer

Reducing the WLL due to the angle, configuration, or condition of use

Answer

De-rating reduces the effective WLL of rigging hardware to account for factors like sling angles, choker hitches, or wear that reduce safe capacity.

(WTT) Wind Turbine Technician Certification Practice Test

(WTT) Wind Turbine Technician Certification Practice Test

WTT Rigging & Lifting Operations 2