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Flammable and Combustible Materials


This checklist is not all-inclusive. You should add to it or delete items that do not apply to your business; however, carefully consider each item and make your decision. You should refer to Minnesota statutes and rules, and federal OSHA standards adopted by reference in Minnesota for specific guidance that may apply to your work situation (see www.dli.mn.gov/). (Note: This checklist is typical for general industry but not for construction or maritime industries.)
  • Are combustible scrap, debris and waste materials (oily rags, etc.) stored in covered metal receptacles and promptly removed from the worksite?
  • Is proper storage practiced to minimize the risk of fire, including spontaneous combustion?
  • Are approved containers and tanks used to store and handle flammable and combustible liquids?
  • Are all connections on drums and combustible liquid piping, vapor and liquid tight?
  • Are all flammable liquids kept in closed containers when not in use (e.g., parts cleaning tanks, pans, etc.)?
  • Are bulk drums of flammable liquids grounded and bonded to containers during dispensing?
  • Do storage rooms for flammable and combustible liquids have explosion-proof lights and mechanical or gravity ventilation?
  • Is liquefied petroleum gas stored, handled and used in accordance with safe practices and standards?
  • Are "NO SMOKING" signs posted on liquefied petroleum gas tanks and in areas where flammable or combustible materials are used or stored?
  • Are liquefied petroleum storage tanks guarded to prevent damage from vehicles?
  • Are all solvent wastes and flammable liquids kept in fire-resistant, covered containers until they are removed from the worksite?
  • Is vacuuming used whenever possible rather than blowing or sweeping combustible dust?
  • Are firm separators placed between containers of combustibles or flammables that are stacked one upon another to ensure their support and stability?
  • Are fuel gas cylinders and oxygen cylinders separated by distance and fire-resistant barriers while in storage?
  • Are fire extinguishers selected and provided for the types of materials in the areas where they are to be used?
    Class A - Ordinary combustible material fires.
    Class B - Flammable liquid, gas or grease fires.
    Class C - Energized-electrical equipment fires.
  • Are appropriate fire extinguishers mounted within 75 feet (22.86 meters) of outside areas containing flammable liquids and within 10 feet (3.048 meters) of any inside storage area for such materials?
  • Are extinguishers free from obstructions or blockage?
  • Are all extinguishers serviced, maintained and tagged at intervals not to exceed one year?
  • Are all extinguishers fully charged and in their designated places?
  • Where sprinkler systems are permanently installed, are the nozzle heads so directed or arranged that water will not be sprayed into operating electrical switchboards and equipment?
  • Are safety cans used for dispensing flammable or combustible liquids at the point of use?
  • Are all spills of flammable or combustible liquids cleaned up promptly?
  • Are storage tanks adequately vented to prevent the development of excessive vacuum or pressure as a result of filling, emptying, or atmosphere temperature changes?
  • Are storage tanks equipped with emergency venting that will relieve excessive internal pressure caused by fire exposure?
  • Are rules enforced in areas involving storage and use of hazardous materials?
Source: Federal OSHA