Week 3

Question 1

Why are synthetic slings a better choice than steel slings?

Answer 1

They are non-conductive (not considered insulated).

Question 2

What are the three configurations used when working with slings?

Answer 2

Vertical
Choke (weakest)
Basket (strongest)

Question 3

What should be done if the sling’s tag is missing or illegible?

Answer 3

Remove the sling from service.

Question 4

As the sling angle decreases, what happens to the tension on each sling?
Why is this a concern?

Answer 4

The tension on each sling increases substantially.
Not knowing that the strain increases as the angle decreases can lead to overloading the slings and result in an accident.

Question 5

What MUST be done every morning before the truck leaves the yard after the pre-trip inspection?

Answer 5

Boom checks.

Run the trucks thru all operations to ensure everything is working safely and efficiently.

Question 6

What are the 3 configurations that digger derrick turrets are mounted?

Answer 6

Rear center
Corner center
Corner mount

Question 7

What information must the operator know to properly use the load angle chart and ensure a safe lift?

Answer 7

The position of the boom and the operational zone.

The weight of the object being lifted.