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Chapter 5 - Fire Behavior

  • Matter exists in three states: solid, liquid, and .
  • exists in many forms including chemical, mechanical, and electrical.
  • Conditions necessary for a include fuel, oxygen, heat, and a self-sustaining chemical reaction.
  • Fires spread by conduction, convection, and .
  • The four principal methods of fire are cooling the fuel, excluding the oxygen, removing the fuel, and inhibiting the chemical reaction.
  • Fires are categorized as Class A, Class B, Class C, Class D, and . These classes reflect the type of fuel that is burning and the type of hazard the fire represents.
  • Solid fuel fires develop through four phases: the incipient phase, the growth phase, the fully developed phase, and the phase.
  • The growth of room and contents fires is dependent on the characteristics of the room and the contents of the room.
  • Special considerations related to room and contents fires include flameover, , backdraft, and the thermal layering of gases.
  • Liquid fuel fires require the proper mixture of .
  • The characteristics of gas fuel fires are different from other fires.
  • Vapor density reflects the weight of a gas compared to .
  • Flammability limits vary widely for different fuels.
  • A BLEVE is a catastrophic in a vessel containing a boiling liquid and a vapor.

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