Oily or solvent-soaked rags should be stored in which containers?

• A. On the floor
• B. Open trash can
• C. Metal containers with lids
• D. In the burn barrel

Answer: (C)

Preventing fire from oily or solvent-soaked rags comes down to controlling heat and containing vapors. Rags can generate heat as solvents oxidize, and if they’re left exposed or exposed to open air, a fire can start. Metal containers with tight-fitting lids limit oxygen, resist heat, and keep fumes contained until the rags are disposed of, making them the safest choice for storing such waste.

On the other hand, leaving rags on the floor creates tripping and ignition risks; an open trash can exposes vapors and fuel for a fire; and a burn barrel invites an active, uncontrolled blaze with potential toxic fumes.