S.3 Ep.6- NFPA 921 Chapter 6 Summary Part 1, Fire Effects; Can You Defend Your Fire Scene Analysis in Deposition?

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In this episode, Scott Kuhlman and Chasity Owens kick off their discussion of NFPA 921 Chapter 6 by breaking down one of the most important foundations in fire investigation: fire effects, and then fire pattens next episode. Using real-world deposition questions and courtroom-style challenges, they show why investigators must be able to clearly explain concepts like fire plume development, truncated cone patterns, U patterns, clean burn, oxidation, calcination, spalling, and more. The episode blends technical training with practical field insight, including stories from recent burn cell exercises, lessons from student investigations, and a blunt reminder that experience alone does not replace a solid grasp of the science. Scott and Chasity walk through key fire effects identified in NFPA 921, explain why these concepts matter in scene analysis and legal testimony, and highlight how misunderstanding or overstating pattern interpretation can seriously damage an investigator’s credibility. They also touch on upcoming training opportunities, fire death investigation work, industry events, hot surface ignition versus autoignition temperature, and the importance of continual study in a field where the basics can make or break a case.

Training:

Alabama Chapter 2026 Free Spring Training — April 7, 2026 | Decatur, Alabama

Montana IAAI 2026 Annual Training Conference — May 12–14, 2026 | Billings, Montana

Advanced Fire Dynamics at Eastern Kentucky University — May 19–20, 2026 | Richmond, Kentucky

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