Permits (Operating, D-faults): When may you enter D-Fault tagged structures?

• A. Enter D-Fault tagged structures only when authorized by the operating authority to perform feeder processing, or to perform work after all D-faults have been identified and de-energized.
• B. Enter anytime if you are curious.
• C. Do not enter ever.
• D. Enter without authorization if a supervisor is present.

Answer: (A)

Entering D-Fault tagged structures is allowed only with a formal authorization from the operating authority. You may go in to perform feeder processing, or to do work after all D-Faults have been identified and de-energized. The D-Fault tag signals that the structure is considered de-energized and hazards must be controlled before entry. This authorization ensures the worker is trained, safety procedures are in place, and there’s verification that there are no energized paths. Curiosity, entering without authorization, or relying on a supervisor’s presence alone does not satisfy the safety requirements.