Basic Fire Behavior
While seeming to be so fundamental, basic fire behavior is the starting point for understanding both fire development and fire control operations. However, the major difference between simple textbook definition of terms and concepts and CFBT is the direct application of theory to real world application.
While the origin of CFBT methods and practices can be traced to Sweden, this approach to developing firefighting knowledge and skill is throughout the world. Ed Hartin (USA) and Nils Bergstron (Sweden) deliver CBFT to a group of Malaysian fire officers attending training (below).
How does a fire develop inside a compartment? What controls fire growth and spread, the fuel or ventilation? Significant changes occur when a fire transitions from fuel controlled to ventilation controlled. Of critical importance to firefighters is the impact of their tactics based on the stage of fire development. Failure to recognize and manage the hazards presented by a ventilation-controlled fire may result in increased risk to firefighters, increased fire spread, or extreme fire behavior.
Malaysian fire officers conduct fire development experiments using a "dolls house" (below left). Shan Raffel (Australia) points out key fire development phenomenon while conducting training in CFBT cell (below right).
Extreme Fire Behavior
Many firefighters can provide a definition of flashover or backdraft and list the signs indicating potential for these types of extreme fire behavior. However, firefighter injury and fatality data indicates that their potential is often unrecognized on the fireground. Flashover, backdraft, and smoke (fire gas) explosion all involve rapid fire progress, but are substantially different phenomenon. Understanding how they occur and developing the ability to recognize both obvious and subtle cues indicating potential for extreme fire behavior is a central element of CFBT.
Classroom training alone does not provide a realistic understanding of extreme fire behavior. Transfer of theory to practice requires realistic training in a live fire environment. CFBT cells (typically constructed from steel shipping containers) provide a safe and effective training environment in which to build fire behavior knowledge. Nils Bergstrom, a senior instructor with R