What is the purpose of lockout/tagout?

• A. To ensure equipment is de-energized and cannot be started during maintenance or repair.
• B. To record maintenance hours for billing.
• C. To enhance machine aesthetics.
• D. To speed up startup after maintenance.

Answer: (A)

Lockout/tagout is a safety process designed to prevent machinery from starting up or releasing stored energy while maintenance or repair work is being done. The equipment is de-energized and secured so it cannot be re-energized, with a lock placed by the worker performing the service. A tag accompanies the lock to indicate that servicing is in progress and who is responsible. This combination ensures that no unexpected startup or energy release can occur, protecting workers from injury. After confirming there is no energy present and the area is safe, the worker completes the maintenance and removes their lock before re-energizing the machine.