Which statement correctly defines lockout/tagout and its use during UPS maintenance?

Which statement correctly defines lockout/tagout and its use during UPS maintenance?

• A. Lockout/Tagout is a scheduling method for maintenance windows.
• B. Lockout/Tagout is a safety procedure to ensure equipment is de-energized and cannot start; apply during maintenance with appropriate locks and tags.
• C. Lockout/Tagout is a visual sign for observers.
• D. Lockout/Tagout is a training module for new hires.

Answer: (B)

Lockout/tagout is a safety procedure that ensures equipment is fully de-energized and cannot restart while maintenance is being performed. In UPS maintenance, that means identifying all energy sources feeding the UPS, isolating them, and applying a lock to the energy-isolating device (such as a circuit breaker or disconnect) along with a tag that communicates that work is in progress. The lock is kept by the person performing the service, and only they (or an authorized person) can remove it, after confirming that all energy has been released and the area is safe. This prevents shocks, burns, or unintended startup during service. The other options describe scheduling, visuals for observers, or training, none of which provide the actual control of energy and prohibition of startup that LOTO requires.

Lockout/tagout is a safety procedure that ensures equipment is fully de-energized and cannot restart while maintenance is being performed. In UPS maintenance, that means identifying all energy sources feeding the UPS, isolating them, and applying a lock to the energy-isolating device (such as a circuit breaker or disconnect) along with a tag that communicates that work is in progress. The lock is kept by the person performing the service, and only they (or an authorized person) can remove it, after confirming that all energy has been released and the area is safe. This prevents shocks, burns, or unintended startup during service. The other options describe scheduling, visuals for observers, or training, none of which provide the actual control of energy and prohibition of startup that LOTO requires.