ARSON DETECTION.  Arson = crime of intentionally starting a fire that damages property  Difficult to prove – - fire or firefighters destroy evidence.

Slides:



Advertisements
Similar presentations
FORENSIC ASPECTS OF FIRE INVESTIGATION
Advertisements

Arson. The Common Accelerants  The most commonly used accelerants are petrol, kerosene, mineral turpentine and diesel.  These accelerants are generally.
Forensic Aspects of Fire Investigation
Arson Fires deliberately set with criminal intent.
Forensic Aspects of Fire Investigation
Arson. “Fire” Ashes denote that fire was; Respect the grayest pile For the departed creature’s sake That hovered there awhile Fire exists the first in.
Forensic Science Image: T. Trimpe/B.Brooks edited dbowen 2013, FS Advhttp://sciencespot.net/
Accident or Arson?. Accidental fires can be caused by… Children Children Pets Pets Faulty electrical, heating, or gas equipment Faulty electrical, heating,
FORENSIC ASPECTS OF FIRE INVESTIGATION
13-1 ©2011, 2008 Pearson Education, Inc. Upper Saddle River, NJ FORENSIC SCIENCE: An Introduction, 2 nd ed. By Richard Saferstein FORENSIC ASPECTS.
Dan Gearhart, Division Chief / Investigator The Arson Investigation Process.
Arson and Fire Investigation
Fire Scene Preservation
Forensic Science.  Read about the fire at the Happy Land Social Club  What were the materials that created the fire?  Why was this fire so deadly?
1 Book Cover Here Chapter 21 ARSON AND EXPLOSIVES Criminal Investigation: A Method for Reconstructing the Past, 7 th Edition Copyright © 2014, Elsevier.
Arson.
ARSON. Do Now: What is arson? Fill out the video questions. We will finish tomorrow. Closure: What causes a back draft? Objectives: discover what arson.
Chapter 4 Arson and Fire Investigation
Criminalistics, 10e Richard Saferstein © 2011, 2007, 2004, 2001, 1998, 1995 Pearson Higher Education, Upper Saddle River, NJ All Rights.
Vocabulary PowerPoint
Fire Debris Analysis Forensic Crime Science Eisenhower High School.
Searching the Fire Scene
Catching Killers FIRE INVESTIGATION. Used to be the ideal way for a criminal to make evidence go up in smoke Arson Investigation Unit New techniques &
Image: Trimpe/B.Brooks 2006
8 th Grade Forensic Science Image:
Arson. Arson Arson is the crime of maliciously, voluntarily, and willfully setting fire to the building, buildings, or other property of another or of.
CHAPTER 4 ARSON AND FIRE INVESTIGATION. INTRODUCTION—OBJECTIVES 1. Define combustion reactions 2. Discuss the four factors that are required to ignite.
Forensic Science Image: Trimpe/B.Brooks 2006
Chapter 2.1 Introduction to Culinary Arts
Combustion Combustion reactions — oxidation reactions that involve oxygen and produce flames Heat of combustion — excess heat energy Exothermic reactions.
13-1 ©2011, 2008 Pearson Education, Inc. Upper Saddle River, NJ FORENSIC SCIENCE: An Introduction, 2 nd ed. By Richard Saferstein FORENSIC ASPECTS.
Low Burning and Holes In The Floor. What is the Myth?  Burn marks on a floor indicate that a fire was set on purpose because…  heat rises  fires only.
Arson and Fire investigation. Investigation Fire investigation involves the examination of all fire-related incidents once firefighters have extinguished.
Image: Trimpe/B.Brooks 2006
Do-now o Have “Happy Land Fire” out o In your notes, answer the following: What do you need to start a fire? What precautions are taken in most buildings.
Forensic Crime Science Eisenhower High School
Forensic Science II Forensic Fire Analysis. Fire Investigation Terms Fire - Produced when a substance undergoes rapid oxidation involving heat and light.
Forensic Science Image: Trimpe/B.Brooks 2006
Forensic Fire investigation. Arson? When investigating a fire one of the questions asked is, “Was this arson?” This question is difficult to answer based.
Chapter 4 Arson and Fire Investigation
Fire Debris Fire debris is submitted to laboratories for analysis by the fire marshal, crime scene investigators, forensic scientists, and insurance investigators.
FORENSIC ASPECTS OF FIRE INVESTIGATION
Fire Debris Fire debris is submitted to laboratories for analysis by the fire marshal, crime scene investigators, forensic scientists, and insurance investigators.
Arson Detection.
FORENSIC ASPECTS OF FIRE INVESTIGATION
Searching, Preserving and Collecting Evidence from an Arson Scene
Fire as Evidence.
Fire Patterns associated with Ignitable Liquid Accelerants
Fire Basics /.
Fire Debris Fire debris is submitted to laboratories for analysis by the fire marshal, crime scene investigators, forensic scientists, and insurance investigators.
Arson Arson is the crime of maliciously, voluntarily, and willfully setting fire to the building, buildings, or other property of another or of burning.
Arson.
Fire Basics Forensic Science.
8th Grade Forensic Science
Fire Basics Image:
Fire and Explosions.
FORENSIC ASPECTS OF FIRE INVESTIGATION
Forensic Fire investigation
Forensic Crime Science
Thursday February 8, 2018 (Discussion – Fire Basics; Textbook Assignment – Collection and Preservation of Arson Evidence)
Fire Basics Image: T. Trimpe/B.Brooks
Chapter 14 FORENSIC ASPECTS OF FIRE INVESTIGATION
The Arson Investigation Process
Forensic Fire investigation
13-5 Analysis of Flammable Residues
(Discussion and Textbook Assignment - Searching the Fire Scene)
Warm Up Objective: Scientists will describe forensic explosives and arson by taking notes and analyzing the activity. What is the topic? What will you.
Presentation transcript:

ARSON DETECTION

 Arson = crime of intentionally starting a fire that damages property  Difficult to prove – - fire or firefighters destroy evidence - combustible liquids (accelerants) evaporate quickly

Types of Fires CategoryDescription Natural Accidental Undetermined Deliberate

Types of Fires CategoryDescription NaturalCaused by acts of nature; ex. Lightening strike Accidental Undetermined Deliberate

Types of Fires CategoryDescription NaturalCaused by acts of nature; ex. Lightening strike AccidentalUnintentional & explainable; ex. Faulty wiring, carelessness Undetermined Deliberate

Types of Fires CategoryDescription NaturalCaused by acts of nature; ex. Lightening strike AccidentalUnintentional & explainable; ex. Faulty wiring, carelessness UndeterminedCause unknown & can’t be identified Deliberate

Types of Fires CategoryDescription NaturalCaused by acts of nature; ex. Lightening strike AccidentalUnintentional & explainable; ex. Faulty wiring, carelessness UndeterminedCause unknown & can’t be identified Deliberate Intentionally set – may or may not be arson; ex. Campfire spreads out of control

Burn Patterns PatternDescriptionIndication V-shape

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted cone

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted coneWider at bottom, narrower upMay be accident or accelerant poured along floor

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted coneWider at bottom, narrower upMay be accident or accelerant poured along floor Alligatoring

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted coneWider at bottom, narrower upMay be accident or accelerant poured along floor AlligatoringLooks like scales of alligatorMay be from accelerant, maybe not

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted coneWider at bottom, narrower upMay be accident or accelerant poured along floor AlligatoringLooks like scales of alligatorMay be from accelerant, maybe not Spalling

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted coneWider at bottom, narrower upMay be accident or accelerant poured along floor AlligatoringLooks like scales of alligatorMay be from accelerant, maybe not SpallingLayers of concrete break away b/c of high temps May be from accelerant, maybe not

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted coneWider at bottom, narrower upMay be accident or accelerant poured along floor AlligatoringLooks like scales of alligatorMay be from accelerant, maybe not SpallingLayers of concrete break away b/c of high temps May be from accelerant, maybe not Streamers

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted coneWider at bottom, narrower upMay be accident or accelerant poured along floor AlligatoringLooks like scales of alligatorMay be from accelerant, maybe not SpallingLayers of concrete break away b/c of high temps May be from accelerant, maybe not StreamersShows a trail from one area to another Accelerant used to spread fire

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted coneWider at bottom, narrower upMay be accident or accelerant poured along floor AlligatoringLooks like scales of alligatorMay be from accelerant, maybe not SpallingLayers of concrete break away b/c of high temps May be from accelerant, maybe not StreamersShows a trail from one area to another Accelerant used to spread fire Arc damage

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted coneWider at bottom, narrower upMay be accident or accelerant poured along floor AlligatoringLooks like scales of alligatorMay be from accelerant, maybe not SpallingLayers of concrete break away b/c of high temps May be from accelerant, maybe not StreamersShows a trail from one area to another Accelerant used to spread fire Arc damageSpark caused by release of electricity Electrical wire; or from wire insulation

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted coneWider at bottom, narrower upMay be accident or accelerant poured along floor AlligatoringLooks like scales of alligatorMay be from accelerant, maybe not SpallingLayers of concrete break away b/c of high temps May be from accelerant, maybe not StreamersShows a trail from one area to another Accelerant used to spread fire Arc damageSpark caused by release of electricity Electrical wire; or from wire insulation Pool or plant

Burn Patterns PatternDescriptionIndication V-shapeNarrow at bottom, spreads out as rises Normal pattern, no accelerant Inverted coneWider at bottom, narrower upMay be accident or accelerant poured along floor AlligatoringLooks like scales of alligatorMay be from accelerant, maybe not SpallingLayers of concrete break away b/c of high temps May be from accelerant, maybe not StreamersShows a trail from one area to another Accelerant used to spread fire Arc damageSpark caused by release of electricity Electrical wire; or from wire insulation Pool or plantLook like puddlesAccelerants collected in a pool at lowest point