What is Lockout/Tagout (LOTO) and why is it essential?

• A. A safety procedure to ensure equipment is de-energized and cannot be started during servicing.
• B. A method to label equipment after servicing only.
• C. A procedure to bypass safety devices during maintenance.
• D. A protocol to test circuits while energized.

Answer: (A)

Lockout/Tagout is the safety practice used to control hazardous energy during servicing by isolating the equipment from its energy sources and preventing it from being started again until the work is finished. The essential idea is to protect workers from unexpected energization or the release of stored energy that could cause injury. In practice, you shut off or isolate the energy source, apply a lock to the energy-isolating device, and attach a tag indicating that the equipment is locked out and who authorized it. Only after you verify the isolation and ensure it’s safe should the maintenance proceed, and the lock remains in place until all work is complete and the area is clear. This approach directly prevents sudden startups or releases of energy, which is why it’s the correct choice. The other options describe labeling after service, bypassing safety devices, or testing circuits while energized—situations that do not prevent hazardous energy from harming workers during maintenance.