1. 13-1 Essentials of Fire Investigation
Forensic Aspects of Fire Investigation
Sanders

2. Forensic Aspects of Fire Investigation
Oxidation
Oxidation is the combination of O2 oxygen with other substances to produce new substances.
May 7, 2019
Forensic Aspects of Fire Investigation

3. Forensic Aspects of Fire Investigation
Combustion is a rapid oxidation of oxygen with another substance accompanied by production of noticeable heat and light.
In an exothermic reaction heat energy is liberated. In an endothermic reaction, heat energy absorbed is absorbed from the surroundings.
May 7, 2019
Forensic Aspects of Fire Investigation

4. Forensic Aspects of Fire Investigation
Pyrolysis
May 7, 2019
Forensic Aspects of Fire Investigation

5. Forensic Aspects of Fire Investigation
Pyrolysis
Pyrolysis is the chemical breakdown of a solid organic matter by heat.
May 7, 2019
Forensic Aspects of Fire Investigation

6. Forensic Aspects of Fire Investigation
Pyrolysis
Pyrolysis is the chemical breakdown of a solid organic matter by heat.
The gaseous products of pyrolysis combined with oxygen to produce a fire.
May 7, 2019
Forensic Aspects of Fire Investigation

7. Forensic Aspects of Fire Investigation
Pyrolysis
Pyrolysis is the chemical breakdown of a solid organic matter by heat.
The gaseous products of pyrolysis combined with oxygen to produce a fire.
May 7, 2019
Forensic Aspects of Fire Investigation

8. Forensic Aspects of Fire Investigation
Spontaneous Combustion
May 7, 2019
Forensic Aspects of Fire Investigation

9. Forensic Aspects of Fire Investigation
Spontaneous Combustion
Spontaneous combustion is fire caused by a natural heat producing process
May 7, 2019
Forensic Aspects of Fire Investigation

10. Forensic Aspects of Fire Investigation
Spontaneous Combustion
Spontaneous combustion is fire caused by a natural heat producing process
May 7, 2019
Forensic Aspects of Fire Investigation

11. Forensic Aspects of Fire Investigation
Spontaneous Combustion
Spontaneous combustion is fire caused by a natural heat producing process
Must be in the presence of plenty of
May 7, 2019
Forensic Aspects of Fire Investigation

12. Forensic Aspects of Fire Investigation
Spontaneous Combustion
Spontaneous combustion is fire caused by a natural heat producing process
Must be in the presence of plenty of
air
May 7, 2019
Forensic Aspects of Fire Investigation

13. Forensic Aspects of Fire Investigation
Spontaneous Combustion
Spontaneous combustion is fire caused by a natural heat producing process
Must be in the presence of plenty of
air
fuel.
May 7, 2019
Forensic Aspects of Fire Investigation

14. Initiate & Sustain Combustion
A fuel must be present
May 7, 2019
Forensic Aspects of Fire Investigation

15. Initiate & Sustain Combustion
A fuel must be present
Oxygen must be available in enough quantity to combine with fuel.
May 7, 2019
Forensic Aspects of Fire Investigation

16. Initiate & Sustain Combustion
A fuel must be present
Oxygen must be available in enough quantity to combine with fuel.
Heat must be applied to initiate combustion
May 7, 2019
Forensic Aspects of Fire Investigation

17. Initiate & Sustain Combustion
A fuel must be present
Oxygen must be available in enough quantity to combine with fuel.
Heat must be applied to initiate combustion
sufficient heat must be generated to sustain the reaction.
May 7, 2019
Forensic Aspects of Fire Investigation