NCCCO Crane Operations & Safety Procedures 5

Question 1

Which condition would require an operator to immediately cease crane operations and remove the crane from service?

Accepted Answer

A cracked or deformed load hook

Answer

A cracked or deformed hook is a critical deficiency that requires the crane to be immediately removed from service until the hook is replaced.

Question 2

What is the purpose of a load moment indicator (LMI) on a crane?

Accepted Answer

To provide a real-time warning when approaching rated capacity based on load and radius

Answer

An LMI monitors load and radius to warn operators when they approach the crane's rated capacity, but it does not replace operator judgment or load charts.

Question 3

During crane operations, a two-blocking condition occurs when:

Accepted Answer

The load block contacts the boom tip or upper block

Answer

Two-blocking occurs when the lower load block is raised until it contacts the upper block or boom tip, potentially causing catastrophic failure of the hoist line.

Question 4

What is the proper procedure when a crane operator is unsure whether ground conditions can support the crane?

Accepted Answer

Consult with the crane's qualified person and obtain a ground bearing capacity assessment

Answer

Uncertain ground conditions must be evaluated by a qualified person before operations begin, as ground failure is a leading cause of crane tip-overs.

Question 5

According to NCCCO standards, what must a crane operator have within reach or in their possession while operating a crane?

Accepted Answer

The applicable load charts for the crane configuration being used

Answer

Operators must have access to the applicable load charts for the exact crane configuration being used at all times during operation.

NCCCO (National Commission for the Certification of Crane Operators) Practice Test

NCCCO (National Commission for the Certification of Crane Operators) Practice Test

NCCCO Crane Operations & Safety Procedures 5