LOTO stands for?

• A. Line Of Transfer Out
• B. Level Of Test Operations
• C. Lock Out /Tag Out
• D. Lock On /Tag On

Answer: (C)

Lockout/Tagout is a safety process used to prevent the unexpected energization or startup of equipment while maintenance or repair work is being done. It involves isolating the machine from its energy sources and, for added protection, securing that isolation with a physical lock (lockout) and a warning tag (tagout). The lock physically prevents the equipment from being turned back on, while the tag communicates that the device is under control of maintenance and should not be operated until the tag is removed and the lock is released.

This is why Lock Out /Tag Out is the correct term. The other phrases don’t describe this energy-control practice: Line Of Transfer Out isn’t a recognized safety term related to isolating power; Level Of Test Operations isn’t about shutting off or controlling energy; Lock On /Tag On would imply enabling or leaving the system energized, which is the opposite of the safety concept.