MASS MASS Test Rigging and Slings

Question 1

What is the primary purpose of a rigging inspection before a lift?

Accepted Answer

To identify defects that could cause failure during the lift

Answer

Pre-lift inspections identify defects such as cuts, kinks, or corrosion that could cause rigging to fail under load.

Question 2

Which sling type offers the greatest flexibility and is best suited for irregular-shaped loads?

Accepted Answer

Chain sling

Answer

Chain slings are highly flexible, durable, and conform well to irregular load shapes while withstanding heat and abrasion.

Question 3

What does the term 'Working Load Limit' (WLL) mean in rigging?

Accepted Answer

The maximum load a sling can carry under ideal conditions

Answer

Working Load Limit is the maximum load a piece of rigging equipment is rated to carry under normal, intended conditions.

Question 4

When a sling is used in a basket hitch, how does the rated load capacity change compared to a straight vertical hitch?

Accepted Answer

It increases up to 2 times

Answer

A basket hitch distributes the load across two legs, which can increase the rated capacity up to twice that of a single vertical hitch.

Question 5

Which condition requires a wire rope sling to be immediately removed from service?

Accepted Answer

Six randomly distributed broken wires in one lay

Answer

ASME B30.9 requires removal of wire rope slings with six or more randomly distributed broken wires in one rope lay.

MASS Test Practice Test