CHST CHST - Construction Health and Safety Technician Crane and Rigging Safety Questions and Answers 5

Question 1

What is the minimum proof test load for a new hook before it is placed into service?

Accepted Answer

125% of rated load

Answer

ASME B30.10 requires hooks to be proof-tested to 125% of their rated load before initial use to verify structural integrity.

Question 2

When performing a pre-shift inspection, which wire rope condition requires immediate removal from service?

Accepted Answer

A kink in the rope

Answer

A kink permanently damages the rope's internal structure and load distribution, making it an immediate rejection criterion per ASME B30.9.

Question 3

What is the role of a qualified rigger versus a competent person in crane and rigging operations?

Accepted Answer

A qualified rigger has recognized training/certification; a competent person can identify hazards and has authority to correct them

Answer

OSHA defines a qualified rigger as having demonstrated rigging knowledge/skill, while a competent person has authority to identify and correct hazards — these are distinct roles.

Question 4

A crane is rated at 40 tons at a 30-foot radius. The same crane at a 50-foot radius will have a rated capacity that is:

Accepted Answer

Lower, because greater radius increases overturning moment

Answer

As radius increases, the overturning moment grows, so crane capacity decreases — this inverse relationship is fundamental to reading load charts.

Question 5

Which of the following best describes a 'critical lift' under OSHA's crane standard?

Accepted Answer

A lift where the load exceeds 75% of the crane's rated capacity or involves special hazards

Answer

OSHA 1926.1436 defines critical lifts as those exceeding 75% of the crane's rated capacity or involving personnel hoisting, multi-crane picks, or other special conditions.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

CHST CHST - Construction Health and Safety Technician Crane and Rigging Safety Questions and Answers 5