Ignitable Liquids

Ignitable Liquids Design Input & Evaluation

Flammable and combustible liquids are substances that have the potential to ignite and burn. The distinction between flammable and combustible liquids is based on their flash points, which refer to the lowest temperature at which the vapors of a liquid can ignite when exposed to an ignition source.

  • Flammable liquids: These are liquids with a flash point below 100°F (37.8°C) according to the National Fire Protection Association (NFPA). Flammable liquids have a higher risk of igniting and can produce flammable vapors that can easily catch fire.
  • Combustible liquids: These are liquids with a flash point at or above 100°F (37.8°C) according to NFPA. While these liquids have a higher flash point than flammable liquids, they can still ignite and burn under certain conditions.

By implementing comprehensive flammable/combustible liquid controls with regards to storage, handling, and use, the risk of fire from ignitable liquids can be significantly mitigated.