Question

if there are power lines near a work site, it must be determined how close they are to any crane activities. which of the following are options for keeping workers safe if the power lines will be closer than 20 feet to crane activities?
select the 3 answer options that apply.

• de-energize and ground the lines
• ensure that no part of any equipment, load line, or load gets closer than 20 feet to the power lines
• determine the line’s voltage and minimum approach distance permitted
• remove the crane from the site and substitute an alternative method

Explanation:

1. De - energize and ground the lines: De - energizing and grounding power lines eliminates the electrical hazard, making the work area safe for crane activities near the lines.
2. Determine the line's voltage and minimum approach distance permitted: Knowing the voltage of the power line helps in determining the safe minimum distance that equipment (including cranes) can be from the line. This is a standard safety practice in electrical safety around construction sites.
3. Remove the crane from the site and substitute an alternative method: If the power lines are too close and other safety measures are not feasible, removing the crane and using an alternative method to complete the work avoids the risk of electrical accidents.

The option "Ensure that no part of any equipment, load line, or load gets closer than 20 feet to the power lines" is not applicable here because the problem states that the power lines will be closer than 20 feet to crane activities, so this option is not a viable solution in this scenario.

Answer:

A. De - energize and ground the lines
C. Determine the line's voltage and minimum approach distance permitted
D. Remove the crane from the site and substitute an alternative method