Which of the following sequences correctly describes the basic steps of Lockout/Tagout (LOTO) during machine maintenance?

Which of the following sequences correctly describes the basic steps of Lockout/Tagout (LOTO) during machine maintenance?

• A. Identify energy sources, isolate the equipment, apply lockout/tagout devices, test to confirm de-energization, perform maintenance, remove devices, and verify restoration.
• B. Turn off the machine, remove guards, perform maintenance, reconnect power.
• C. Lockout only after maintenance.
• D. Notify supervisor but ignore de-energization.

Answer: (A)

Lockout/Tagout is about preventing unexpected energization and releasing stored energy while work is done on machinery. The safest and most effective sequence starts by identifying all energy sources that could affect the equipment, then shutting the machine down and isolating those energy sources. After isolation, the authorized person applies lockout or tagout devices to hold the energy in a safe, de-energized state. It’s essential to test and confirm de-energization before any maintenance begins. With the energy secured and verified, maintenance can be performed. Once work is finished and the area is clear, the devices are removed and power is restored, followed by verification that the machine operates correctly. The other options miss key safety steps: skipping proper isolation and lockout, or performing maintenance while energy is still capable of energizing the equipment, or ignoring de-energization altogether, all of which create serious hazards.

Lockout/Tagout is about preventing unexpected energization and releasing stored energy while work is done on machinery. The safest and most effective sequence starts by identifying all energy sources that could affect the equipment, then shutting the machine down and isolating those energy sources. After isolation, the authorized person applies lockout or tagout devices to hold the energy in a safe, de-energized state. It’s essential to test and confirm de-energization before any maintenance begins. With the energy secured and verified, maintenance can be performed. Once work is finished and the area is clear, the devices are removed and power is restored, followed by verification that the machine operates correctly.

The other options miss key safety steps: skipping proper isolation and lockout, or performing maintenance while energy is still capable of energizing the equipment, or ignoring de-energization altogether, all of which create serious hazards.