Fire exits might be blocked or locked. Fire extinguishers are not mounted on the walls or are missing from the mounting. There are no fire exit signs. Electrical exit signs are not lighted. Protective covers are missing.
Many extension cords are in use.
Wires are frayed, unconnected or dangling. Machines and fans lack safety guards. Belts and pulleys are exposed. Steam pipes are not insulated. Aisles are less than 36 inches wide.