In a maintenance scenario on a powered hoist, which procedure ensures energy sources are isolated?

• A. Lockout/Tagout procedure.
• B. Simply powering the device off and leaving it.
• C. Lockout/Tagout procedure; isolates energy sources before maintenance.
• D. Proceed with maintenance and report issues later.

Answer: (C)

The main idea is controlling hazardous energy before working on equipment. Lockout/Tagout is the standard approach that both disconnects and prevents re-energizing the hoist while you work. It involves identifying every energy source, shutting power off, isolating the equipment from those sources, and applying a lock (to secure the energy-disabling device) plus a tag (to warn others who might try to re-energize it and to indicate who is responsible). This ensures no one can restart the hoist during maintenance and that stored or residual energy cannot release unexpectedly.

Simply turning the power off isn’t enough because energy can still be stored or the device could be re-energized by someone else. Without locking out and tagging, there’s a real risk of sudden start-up or release of stored energy. That’s why the procedure that includes isolating energy sources before maintenance is the safest and correct approach. The other options don’t provide the necessary guaranteed isolation and control, which is essential for safe maintenance.