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601 Essentials of Occupational Safety and Health
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Safe Use of Flammable and Combustible Liquids

A good plan for the safe use of flammable and combustible liquids contains these components:

  • Control of the ignition sources.
  • Proper storage
  • Fire control methods
  • Safe handling
A worker grinding metal.
There are many sources of ignition.

Possible Ignition Sources

Be sure to take adequate precautions when handling flammable and combustible liquids to prevent the ignition of flammable vapors. Some sources of ignition include:

  • Sparks from electrical tools and equipment.
  • Sparks, arcs and hot metal surfaces from welding and cutting.
  • Tobacco smoking.
  • Open flames from portable torches and heating units, boilers, pilot lights, ovens, and driers.
  • Hot surfaces such as boilers, furnaces, steam pipes, electric lamps, hot plates, irons, hot ducts and flues, electric coils and hot bearings.
  • Embers and sparks from incinerators, foundry cupolas, fireboxes and furnaces.
  • Sparks from grinding and crushing operations.

Knowledge Check Choose the best answer for the question.

2-3. Sparks from grinding and crushing operations may be considered a possible _____ for flammable and combustible liquids.