FREE NCCCO Wire Rope Inspection and Replacement Criteria Questions and Answers

Question 1

According to ASME B30.5, running rope on a mobile crane must be removed from service if there are how many broken wires in one lay?

Accepted Answer

6 randomly distributed broken wires in one lay

Answer

3 broken wires in one strand in one lay

Answer

12 randomly distributed broken wires in one lay

Answer

1 broken wire at an end connection

Question 2

What type of wire rope damage is characterized by a loop that has been pulled tight, resulting in permanent deformation and core damage?

Accepted Answer

Kinking

Answer

Bird caging

Answer

Crushing

Answer

High stranding

Question 3

A reduction of the nominal rope diameter of more than what percentage is a cause for rope replacement?

Accepted Answer

5%

Answer

2%

Answer

10%

Answer

15%

Question 4

Which of the following is a clear visual indicator of heat damage to a wire rope?

Accepted Answer

Blue or rainbow discoloration of the wires

Answer

Heavy lubrication on the surface

Answer

A slight, shiny appearance on the crowns of the wires

Answer

The presence of valley breaks

Question 5

What is the term for the wire rope defect where the outer strands untwist and separate from the core, creating a cage-like appearance?

Accepted Answer

Bird caging

Answer

Kinking

Answer

High stranding

Answer

Core protrusion

Question 6

A 'frequent' inspection of the running ropes on a crane in regular service should be conducted how often?

Accepted Answer

Prior to each shift or daily

Answer

Annually

Answer

Monthly

Answer

Only when the operator suspects a problem

Question 7

What is a critical removal criterion for a swaged or poured socket at the end of a wire rope?

Accepted Answer

Evidence of cracking, severe corrosion, or rope slippage at the socket

Answer

The socket is not painted safety yellow

Answer

The socket shows signs of minor surface rust

Answer

The socket is more than 5 years old