OSHA Electrical Hazards & Power Line Safety 2

Question 1

Under OSHA 1926.1408, who is responsible for notifying the utility company before crane work begins near overhead power lines?

Accepted Answer

The employer or controlling entity

Answer

OSHA places the responsibility for contacting the utility owner/operator on the employer or controlling entity before crane operations begin near power lines.

Question 2

What is the purpose of an 'encroachment prevention plan' during crane operations near power lines?

Accepted Answer

To establish procedures that prevent the crane from entering the power line danger zone

Answer

An encroachment prevention plan defines the methods, equipment, and procedures that will keep any part of the crane or load from entering the power line's minimum approach distance.

Question 3

Under what condition may a crane operate closer than standard OSHA minimum approach distances to overhead power lines?

Accepted Answer

When the utility owner deenergizes and visibly grounds the lines

Answer

OSHA 1926.1408(d) permits reduced clearance only when the utility owner/operator has deenergized the power lines and visibly grounded them.

Question 4

What does 'equipotential zone' mean in the context of crane electrical safety?

Accepted Answer

A protected area where all objects are at the same electrical potential, reducing shock risk

Answer

An equipotential zone is created by bonding and grounding all conductive objects so they share the same electrical potential, preventing current flow through workers.

Question 5

Which of the following is NOT an acceptable primary safeguard against power line hazards during crane operations?

Accepted Answer

Relying solely on a proximity warning device

Answer

A proximity warning device alone is insufficient; OSHA requires it to be used in combination with other controls such as insulating barriers or deenergized lines.

OSHA - OSHA Certified Crane Operator Practice Test

OSHA - OSHA Certified Crane Operator Practice Test

OSHA Electrical Hazards & Power Line Safety 2