A crane boom makes contact with an overhead powerline. The operator is safely inside the cab, but knows others are working near the base of the crane. What is the most critical action the operator must take immediately?

Question: A crane boom makes contact with an overhead powerline. The operator is safely inside the cab, but knows others are working near the base of the crane. What is the most critical action the operator must take immediately?

Answer options: ✅ Warn all personnel in the vicinity to stay clear of the crane and the surrounding ground path and remain in the cab.

• Attempt to lower the boom slowly to break contact with the powerline.
• Immediately sound the crane's horn repeatedly to draw attention.
• Attempt to reverse the crane to pull it away from the powerline.

Correct answer: Warn all personnel in the vicinity to stay clear of the crane and the surrounding ground path and remain in the cab.

Explanation: Warning others and ensuring they maintain a safe distance from the energized equipment and ground path is critical to prevent step and touch potential electrocutions. Staying in the cab is safest until the line is de-energized. This is a critical safety protocol under provincial OHS regulations.