What is the purpose of lockout/tagout procedures before electrical work?

• A. To prevent accidental energizing of a system and protect personnel.
• B. To speed up maintenance by bypassing safety.
• C. To ensure some fans run.
• D. To document the maintenance schedule.

Answer: (A)

Lockout/tagout procedures are used before electrical work to prevent the equipment from being energized while a technician is working on it. By isolating the energy sources, these practices stop accidental startup or re-energization that could cause electric shocks, burns, or arc flash injuries. A lock physically secures the energy‑isolating device in the off position, and a tag communicates who is working on the equipment and why. Only the person who applied the lock (and after confirming the area is safe) should remove it and allow power to be restored. This safety approach is about protecting workers, not speeding maintenance, keeping fans running, or documenting a schedule.