CHST Crane and Rigging Safety 4

Question 1

What is the primary purpose of a crane's load chart?

Accepted Answer

To define maximum lifting capacities at various radii and boom angles

Answer

Load charts provide the rated capacity of a crane at specific boom lengths, radii, and configurations to prevent overloading.

Question 2

Which condition requires a crane to be taken out of service immediately?

Accepted Answer

A cracked load hook with a visible deformation

Answer

A cracked or deformed hook is a critical defect that can cause sudden load drop and must be removed from service until repaired or replaced.

Question 3

When must a pre-lift meeting be conducted on a critical lift?

Accepted Answer

Before the lift begins, with all personnel involved in the operation

Answer

Pre-lift meetings must occur before the lift to ensure all personnel understand the plan, signals, hazards, and responsibilities.

Question 4

A rigger notices that a wire rope sling has a kink that cannot be straightened. What should the rigger do?

Accepted Answer

Tag and remove the sling from service

Answer

A kinked wire rope sling is permanently damaged and weakened; it must be removed from service and destroyed.

Question 5

What factor determines whether a lift is classified as a 'critical lift' under ASME B30.5?

Accepted Answer

The load exceeds 75% of the crane's rated capacity or involves unusual hazards

Answer

ASME B30.5 and most site standards classify a lift as critical when it exceeds 75% of rated capacity or presents exceptional hazards such as lifts over personnel or energized equipment.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

CHST Crane and Rigging Safety 4