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Sources of Information: Origin & Cause

Credit Hours: 3
Approximate reading time: 0.5 Hours
Approximate online time: 0.5 Hours

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Disclaimer- NFPA and other resource editions cited within the CFITrainer.Net site were current as of the release of the respective modules. The field of fire investigation and its guiding documents are constantly evolving and it is incumbent upon the fire investigator to remain up to date with the guidance in the current editions of the documents referenced in all modules on CFITrainer.Net, regardless of which edition was used in the writing of the module.

Program Abstract

Application of the scientific method’s hypothesis development and testing process runs on information and data. Determining what information is needed to form or test a hypothesis and where to obtain that information is a critical investigative skill. This module goes inside the investigative thinking process at a fire scene to show how the need for information about origin and cause develops organically and how an investigator determines where they may be able to obtain the missing information.

This module is one of two CFITrainer.Net modules on sources of information in a fire investigation. The other module is “Sources of Information: Follow-Up Investigation.”

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ATF ARSON-CS-0002 Advanced Origin and Cause/Courtroom Techniques

IAAI Fundamentals of Fire Investigation

IAAI Electrical Aspects of Fire Investigation

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National Fire Academy Fire Investigation: Essentials R0772

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Principles of Fire Investigation

NFPA 1033 (2022 Ed.) JPR

4.1.1 Meet JPRs in 4.2 Through 4.7

4.1.2 Employ Scientific Method

4.1.3 Complete Site Safety Assessment & Follow Standards

4.1.4 Maintain Liaison With Other Interested Professionals and Entities

4.1.5 Adhere to all Applicable Legal and Regulatory Requirements

4.1.6 Understand the Organization and Operation of the Investigative Team Within an IMS

4.1.7.1 to 4.1.7.3 Remaining Current & Continuing Education

4.2 Scene Examination

4.2.1 Secure the Fire Ground

4.2.2 Conduct Exterior Survey

4.2.3 Conduct Interior Survey

4.2.4 Interpret Fire Patterns Individually

4.2.5 Interpret and Analyze Fire Patterns Collectively

4.2.6 Examine and Remove Fire Debris

4.2.7 Reconstruct Potential Area(s) of Origin

4.2.8 Inspect and Analyze the Performance of Building Systems

4.2.9 Discriminate the Effects of Explosions

4.3 Documenting the Scene

4.3.1 Diagram the Scene

4.3.2 Photographically Document the Scene

4.3.3 Construct Investigative Notes

4.4 Evidence Collection/Preservation

4.4.1 Utilize Proper Procedures for Managing Victims and Fatalities

4.4.2 Locate, Document, Collect, Label, Package, and Store Evidence

4.4.3 Select Evidence for Analysis

4.4.4 Maintain a Chain of Custody

4.4.5 Dispose of Evidence

4.5.1 Develop an Interview Plan

4.5.2 Conduct Interviews

4.5.3 Evaluate Interview Information, Analyze, Correlated, and Corroborate

4.6 Post-Fire Investigation

4.6.1 Gather Reports and Records, Maintain Admissibility in Court

4.6.2 Evaluate the Investigative File

4.6.3 Coordinate Expert Resources

4.6.4 Establish Evidence as to Motive and/or Opportunity, Given an Incendiary Fire

4.6.5 Formulate an Opinion Concerning Origin, Cause, or Responsibility for a Fire

4.7 Presentations

4.7.1 Prepare a Written Report

4.7.2 Express Investigative Findings Verbally

4.7.3 Testify During Legal Proceedings

NFPA 1033 (2022 Ed.) 4.1.7 Topic

4.1.7 (1) Fire Science

4.1.7 (1)(a) Fire Chemistry

4.1.7 (1)(b) Thermodynamics

4.1.7 (1)(c) Fire Dynamics

4.1.7 (1)(d) Explosion Dynamics

4.1.7 (2) Fire Investigation

4.1.7 (2)(a) Fire Analysis

4.1.7 (2)(b) Fire Investigation Methodology

4.1.7 (2)(c) Fire Investigation Technology

4.1.7 (2)(d) Evidence Documentation, Collection, and Preservation

4.1.7 (2)(e) Failure Analysis and Analytical Tools

4.1.7 (3) Fire Scene Safety

4.1.7 (3)(a) Hazard Recognition, Evaluation, and Basic Mitigation Procedures

4.1.7 (3)(b) Hazardous Materials

4.1.7 (3)(c) Safety Regulations

4.1.7 (4) Building Systems

4.1.7 (4)(a) Types of Construction

4.1.7 (4)(b) Fire Protection Systems

4.1.7 (4)(c) Electricity and Electrical Systems

4.1.7 (4)(d) Fuel Gas Systems

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