After performing a disconnection, which step is essential before re-energizing?

• A. Re-energize immediately to test.
• B. Notify affected personnel only.
• C. Verify isolation and complete checks before re-energizing.
• D. Remove LOTO and proceed.

Answer: (C)

Before re-energizing, you must verify that the energy has been truly isolated and all required checks have been completed. This means confirming that the disconnects are open, energy sources are secured, and there is no stored or residual energy that could unexpectedly energize the equipment. Using proper verification methods (such as appropriate testing equipment and procedures) ensures the circuit is dead and safe, and that no hazardous conditions remain in the system. This verification is a fundamental part of lockout/tagout practices, ensuring only authorized personnel re-energize after confirming everything is safe. Rushing to re-energize without this step can put workers at serious risk of shock, arc flash, or mechanical injury. While notifying affected personnel is important, it does not replace the need to verify isolation. Removing the lockout/tagout devices and proceeding bypasses essential safety checks and creates a dangerous situation.