NFPA 921, Guide for Fire and Explosion Investigations 2024

NFPA 921, Guide for Fire and Explosion Investigations 2024

The NFPA 921, Guide for Fire and Explosion Investigations (2024 Edition) is the industry’s leading resource for fire investigation professionals, providing a scientific roadmap for determining the origin, cause, responsibility, and prevention of fires and explosions. Recognized by the Organization of Scientific Area Committees (OSAC) as the forensic science consensus guide, NFPA 921 is trusted by over 600 forensic science practitioners and experts to ensure accurate, fact-based fire investigations.

This latest 2024 edition introduces several key updates to enhance the investigative process. It includes guidance on an investigator’s potential confirmation bias, opinions, and expressions of certainty, ensuring that conclusions remain objective and scientifically valid. It also addresses the impact of suppression activities on fire ventilation and flow paths remote from the area of origin, which is critical for understanding fire behavior. Additionally, the latest edition has relocated all fire effects on electrical systems and components to Chapter 6, improving clarity and accessibility.