What is the purpose of a lockout tag in HV safety procedures?

• A. To lock the physical disconnect.
• B. To substitute for PPE.
• C. To block physical access.
• D. To provide visible indication and information about who locked out and why, preventing re-energization.

Answer: (D)

Lockout tagout centers on keeping machinery or energy sources de-energized while maintenance is done. The lockout device physically locks the energy-disconnecting point so power cannot be supplied. The tag provides a clear, visible message about the lockout—who applied it and why—which communicates the status to everyone working nearby. This information helps prevent re-energizing the system until the authorized person verifies that the work is complete and removes the lock. In high-voltage safety, combining the physical lock with the informative tag reduces the risk of shock or arc flash by making the shutdown deliberate, visible, and traceable.