• Explain the theories underlying combustion processes • Describe how fire researchers have identified combustion processes using a variety of different classifications • Provide a description of the stages and events of fire as it progresses from the initial stage to its final stage • Explain the causes of flame over, flashover, and backdraft and review the procedures to prevent and protect against such events • Describe the various methods by which heat and unburned gases move in a confined environment • Define the five classes of fires and explain how they are classified

1. Combustion Processes Chapter 3

6. What is Combustion (cont’d.) Figure 3-2 The new fire tetrahedron

15. Figure 3-7 Temperatures associated with the stages of fire and the unique fire events

25. Figure 3-11 Relationship among temperature scales

29. Radiation Figure 3-14 Radiation is energy that travels across a space and does not need an intervening medium, such as a solid or a fluid

30. Direct Flame Impingement Figure 3-15 Flames directly impinging upon the materials transfer the heat, raising their temperature to the point where combustion occurs