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

Question 1

According to OSHA 29 CFR 1926 Subpart CC, when is a signal person required for crane operations?

Accepted Answer

When the point of operation is not in full view of the operator or the operator's view is obstructed in the direction of travel.

Answer

Only when the load being lifted exceeds 50% of the crane's rated capacity.

Answer

At all times when a crane is in operation, regardless of visibility.

Answer

Only during critical lifts as defined by the company's internal safety plan.

Question 2

A rigger is inspecting a synthetic web sling before a lift. Which of the following would be cause for immediate removal from service?

Accepted Answer

The presence of knots or melting/charring.

Answer

Minor discoloration from sun exposure.

Answer

Sling protection label is slightly faded but still legible.

Answer

Dirt and grime on the sling from normal use.

Question 3

A construction site supervisor is developing a critical lift plan. Which of the following situations would OSHA define as a critical lift, requiring such a plan?

Accepted Answer

Lifting a load that exceeds 75% of the crane's rated capacity.

Answer

Any lift that occurs during nighttime hours.

Answer

A lift where the load is valued at over $100,000.

Answer

Using a brand new crane for the first time on a job site.

Question 4

During a multi-crane lift, what is the most crucial element of communication between the crane operators and the lift director?

Accepted Answer

Ensuring all operators are on the same, dedicated radio channel.

Answer

Using hand signals exclusively for all communication.

Answer

Having each operator communicate only with their designated spotter.

Answer

Relying on the lead operator to relay all commands to the other operator.

Question 5

What is the primary purpose of using outrigger pads or crane mats?

Accepted Answer

To distribute the crane's load over a larger area to ensure ground stability.

Answer

To provide a level surface for the crane operator to stand on.

Answer

To protect the ground surface from cosmetic damage.

Answer

To increase the crane's lifting capacity beyond its rated limit.

Question 6

Prior to each shift, what is the minimum inspection requirement for rigging equipment according to OSHA?

Accepted Answer

A visual inspection by the competent person using the equipment.

Answer

A documented inspection by a third-party inspector.

Answer

A visual inspection by a qualified rigger.

Answer

A thorough inspection by the site safety manager.