Chapter 37 Fire Cause Determination Flashcards
Arson
malicious burning of property with a criminal intent.
Point of origin
starting point of a fire where ignition occurs and fuel begins to burn.
competent ignition source
source must have enough heat energy to ignite the fuel and must remain in contact with the fuel until the fuel reaches its ignition temp. seconds,minutes,hours,days,weeks
Serial arson
offender that sets three or more fires with cooling off between fires
Spree arson
involves arsonist who sets three or more fires at separate locations with no cooling off
Mass arson
offender who sets three or more fires at the same site or locations during a limited period of time.
Arsonist motives
- vandalism
- exvitement
- revenge
- crime concealment
- profit
- extremism
Pyromaniac
pathological fire setter, adults/often loners, polite and timid
Juvenile Fire-setters three groups
- 8yrs and younger- usually curious
- 9 to 12yrs- spite revenge (M) attention or stress (F)
- 13 to 17yrs- same motivations as adults
accelerants
mat. used to initiate/increase fire spread
accidental
fire cause classification that includes fires started with a proven cause that does not involve a deliberate human act. (cigarette left unattended)
Chan of custody/ chain of evidence
legal term used to describe paperwork used when handling evidence
circumstantial evidence
gas can found and witnesses saw suspect buying the gas can
contaminated
term used to describe evidence that may have been altered from its original state.
demonstrative evidence
material that are used to demonstrate a theory or explain an event, computer model
depth of char
thickness of material consumed by a fire. helps determine intensity
direct evidence
evidence that is reported first hand (eye witness/security camera)
incendiary
fire cause classification that includes fires that are deliberately set.
trailers
comb. materials (rolled rags, blankets, newspapers, and ignitable liquids)
Trace/transfer evidence
evidence of a minute quantity of physical evidence that is conveyed from one place to another
Physical evidence
items that can be observed photographed, measured, collected, examined in a lab and presented in court.
Fire Cause stats
396,000 home structure fires
2580 Fatalities
6.8 billion in direct property damage