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

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

• A. A system to label equipment with owner names only.
• B. A control procedure to de-energize and lock equipment to prevent unexpected energization during maintenance; ensures worker safety by preventing startup and release of stored energy.
• C. A procedure for storing tools in a locker.
• D. A method to tag dangerous chemicals only.

Answer: (B)

Lockout/Tagout is a safety process that ensures machinery cannot be energized or release stored energy while maintenance or repair work is being done. It involves isolating energy sources, applying a lock to prevent re-energization, and tagging to indicate that work is in progress, with verification that energy is truly zero before starting. This protects workers from unexpected startup and the release of stored energy from electrical, hydraulic, pneumatic, or mechanical sources. For example, technicians working on a conveyor line would shut off power, apply a lock to the switch or disconnects, place a tag with their name and date, and verify there is no residual energy before beginning the work. Other options miss the core purpose: labeling ownership does not control energy, storing tools is unrelated, and tagging chemicals alone doesn’t address machinery energy hazards. The essential goal is preventing injuries by controlling hazardous energy during maintenance.

Lockout/Tagout is a safety process that ensures machinery cannot be energized or release stored energy while maintenance or repair work is being done. It involves isolating energy sources, applying a lock to prevent re-energization, and tagging to indicate that work is in progress, with verification that energy is truly zero before starting. This protects workers from unexpected startup and the release of stored energy from electrical, hydraulic, pneumatic, or mechanical sources. For example, technicians working on a conveyor line would shut off power, apply a lock to the switch or disconnects, place a tag with their name and date, and verify there is no residual energy before beginning the work. Other options miss the core purpose: labeling ownership does not control energy, storing tools is unrelated, and tagging chemicals alone doesn’t address machinery energy hazards. The essential goal is preventing injuries by controlling hazardous energy during maintenance.