Lighting sources to be used in the permit confined space shall be explosive-proof and specifically approved by a recognized agency such as Underwriter Laboratory or the Mine Safety and Health Administration.
- Any electrically-operated tool taken inside the permit space shall be double insulated, inspected for defects, and connected to an approved ground fault circuit interrupter that has been inspected and tested prior to use.
- All ladders used for entry/exit into the permit confined space must meet all applicable codes and standards as outlined in local regulatory requirements and inspected prior to use. They must not interfere with rescue or retrieval systems, ventilation methods, and work operations.
