NFPA 921, Guide for Fire and Explosion Investigations

The NFPA 921 Guide for Fire and Explosion Investigations 2024 is a detailed professional reference for conducting safe, systematic, and scientifically supported investigations of fire and explosion incidents.

Developed by the National Fire Protection Association, this guide helps investigators gather information, evaluate evidence, test possible explanations, and form conclusions based on the available facts. Its structured approach encourages careful analysis rather than conclusions based only on assumptions, visual impressions, or unsupported opinions. NFPA describes the publication as a foundation for scientific investigation methods used to develop fact-based opinions about fire and explosion incidents.

The book addresses key areas of the investigative process, including basic methodology, fire science, fire effects and patterns, scene documentation, physical evidence, legal considerations, origin determination, cause determination, failure analysis, and explosions. It also provides guidance relevant to reporting findings and presenting professional opinions.

The 2024 edition includes additional attention to confirmation bias, the development of investigator opinions, and appropriate expressions of certainty. These topics are especially important when conclusions may be examined by employers, insurers, regulators, attorneys, or courts.

NFPA 921 is valuable for public- and private-sector fire investigators, fire marshals, forensic engineers, law-enforcement personnel, insurance professionals, attorneys, safety specialists, consultants, instructors, and students preparing for work in fire investigation. It can support scene examinations, case reviews, technical training, report preparation, and professional reference.

Whether you are building an investigation library, updating an earlier edition, or supplying resources to a fire investigation unit, the 2024 edition offers a practical framework for more organized and defensible investigative work.

Order a single copy for individual use or contact us for bulk pricing for fire departments, investigation firms, government agencies, colleges, training centers, insurers, and resellers.

Key Features

• 2024 edition of NFPA 921
• Science-based fire and explosion investigation guidance
• Supports systematic origin-and-cause analysis
• Covers basic fire science and investigative methodology
• Includes guidance on fire effects and fire patterns
• Addresses scene documentation and physical evidence
• Covers origin determination and cause determination
• Includes material concerning explosions and failure analysis
• Discusses investigator opinions and expressions of certainty
• Useful for professional reports, case reviews, and training
• Relevant to public- and private-sector investigators
• Available for individual purchase and bulk orders

Genre: Technical code book