FREE NCCCO Power Line Hazard Identification and Safety Procedures Questions and Answers

Question 1

According to OSHA 1926.1408, what is the minimum required clearance for a crane operating near a power line with a voltage of up to 50kV?

Accepted Answer

10 feet

Answer

5 feet

Answer

15 feet

Answer

20 feet

Question 2

If a crane's boom or load line makes contact with an energized power line, what is the safest immediate action for the operator?

Accepted Answer

Remain in the cab and try to break contact.

Answer

Immediately jump from the cab to safety.

Answer

Lower the load to the ground.

Answer

Signal for a ground worker to push the line away with a wooden pole.

Question 3

Who is responsible for determining a power line's voltage to establish the correct minimum approach distance?

Accepted Answer

The utility owner/operator.

Answer

The crane operator, by visual estimation.

Answer

The site supervisor.

Answer

The dedicated spotter.

Question 4

What is 'step potential' in the context of a crane contacting a power line?

Accepted Answer

The voltage difference between a person's two feet on energized ground.

Answer

The voltage required to operate the crane's controls.

Answer

The potential for the crane to take a step and tip over.

Answer

The voltage difference between the crane and the power line.

Question 5

If crane work must be performed closer than the minimum permitted distance in OSHA Table A, what is the primary requirement?

Accepted Answer

The power line must be de-energized and visibly grounded.

Answer

Use a proximity alarm and two spotters.

Answer

The operator must wear insulated gloves and boots.

Answer

The crane must be equipped with an insulated boom guard.

Question 6

What is the primary role of a dedicated spotter during crane operations near power lines?

Accepted Answer

To observe the clearance and provide timely warnings.

Answer

To rig the load for the operator.

Answer

To operate the crane's radio.

Answer

To determine the voltage of the power line.

Question 7

An insulating link or device installed on a crane's load line:

Accepted Answer

Does not change the minimum clearance requirements.

Answer

Allows the crane to work closer to power lines.

Answer

Eliminates the need for a spotter.

Answer

Guarantees the safety of ground personnel.