Which devices are used in lockout/tagout (LOTO) to secure energy sources?

• A. First aid kits
• B. Locks and tags to secure energy sources.
• C. Hard hats and safety glasses
• D. Fire extinguishers

Answer: (B)

Lockout/tagout relies on physical means to isolate energy sources and clearly signal that equipment is under maintenance. The devices used are locks and tags placed on energy-control points like switches, valves, or circuit breakers. A lock prevents re-energizing, while a tag provides information about who applied the isolation, why, and when. This combination keeps the equipment safely de-energized until the authorized person removes the lock and tag. First aid kits, PPE like hard hats and safety glasses, and fire extinguishers serve other safety roles and do not secure or indicate energy isolation.