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firt

Key Concepts:

Terms in this set (64)

because evidence can be lost during suppression and overhaul activities
Why must fire fighters be trained in the methods of fire cause determination and evidence preservation?
by delegation
how do fire chiefs of large departments usually carry out their duties of fire cause determination
the fire cause determination must point to arson before the arson investigation can begin
how are fire cause determination and a criminal investigation of arson related
it varies by jurisdiction
do fire investigators have police powers
ATF
what federal agency has available fire investigation teams that can assist local jurisdictions, especially on large scale incidents
incendiary
what is the term for an intentionally set fire?
yes
does it ever happen that the cause of a fire remains forever unknown
competent
what is an ignition source called if it both has enough heat energy to ignite the fuel ad remains in contact with it long enough to cause ifnition
omission
what kind of fire cause occurs if a pot is left unattended on the stove until it catches on fire
3000
according to NFPA statistics from 2006, about how many fatalities were there from reported fire incidents in the united states?
residences
where do most structure fires occur?
exposures
What was the least common cause of residential fire, according to NFPA statistics published in 2007?
worn-out or defective equipment
What subtype of electrical fire cause would 50 year old deteriorating wiring fall under?
the exterior
The fire investigation process usually begins with examination of
v pattern
what pattern of char on the wall suggests that the fire began under it at the floor level
digging out
what trem describes the process of carefully looking for evidence in the debris following a fire
evidence
what term refers to all of the information gathered and used by an investigator in determining the cause of a fire
demonstrative
what kind of evidence is used to validate a theroy or show how something could have occured
direct
what kind of evidence includes facts that can be observed or reported first hand
yes, they can often be delayed for this reason
can salvage and overhaul ever be delayed until an investigator has examined the scene
they can provide essential assistance
what role do fire fighters play in fire cause determination
fire chief
who has the legal responsibility to determine the cause of fires in most jurisdictions
it varies by jurisdiction
under what circumstances is a fire investigator dispatched to a fire
with criminal intent
to qualify as arson, a fire must be maliciously set
what the cause and orgin of the fire were
an arson investigation must determine three things, one of which is who started the fire. what is one of the other two
limited
how muich time,personnel, and resources do most fire departments and goverment agencies have for fire investigation
15
about howmany agents are on an atf team that would come help in fire cause determination on large scale incidents
where why and how only
what does a causes-and-origin investigation determine about the origination of a fire
point of origin
at what point does an ignition source come into contact with a fuel suipply, thus starting a fire
they stay in contact long enough to ignite
fire results when a competent ignition source and a fuel come together, provided one condition is met. what is the condition
either
can fires be caused only by an act, only by ommision, either, or neither
incendiary
if a fire is not of accidental cause, then of what type cause is it?
about 400,000
according to NFPA statistics, about how many home structure fires were reported in the united states in 2006
seven billion
about how much direct property damage, in dollars, was caused by fire in 2006 in the us according to NFPA statistics
cooking equipment
what was the leading cause of fire in residential occupancies, according to NFPA statistics published in 2007?
the deeper the char, the higher the intensity of the fire
how is char depth related to how long the surface of a material was exposed to fire?
flammable liquids used along the baseboard
what is suggested by the appearance of an inverted v pattern on a wall
how long it burned
removing and inspecting the layers of debris from a fire enables inspectors to determine the sequence in which items burned, weither an item burned from the top down or the bottom up, and:
trace evidence
what kind of evidence is a minute quanity of physical evidence that is conveyed from one place to another
witnesses are present
before moving an object that is evidence to protect it from damage, fire fighters should be sure that a location sketch is drawn, that a photograph is taken, and:
insurance company investigators
What agency can provide technical expertise on a fire investigation?
cause
what is the term for the particular set of circumstances that brought the ignition source into contact with a fuel
accidental
what is the term for a fire caused by falling asleep with a lit cigarette
mproper use
What subtype of electrical fire cause would placing an electric heater too close to combustable materials fall under
defective installation
what subtype of electrical fire cause would using light duty extension cord to connect a heavy duty appliance to a wall outlet fall under
area with the lightest damage
When moving inside the building to continue the fire investigation, where should the investigator begin
point of origin
One of the first steps when conducting a fire investigation is to identify the ____
Up and out
The flow of heated gases from a fire will almost always be _____ from the point of origin
grid
what type of search pattern is used to examine a fire area
physical
what type of evidence is an empty gasoline can
circumstantial
what type of evidence is used to prove a theory
chain of custody
What is the term for the process of maintaining continuous possession and control of evidence from the time it is discovered until it is used in court
fire investigator
who should conduct the interview of potential witnesses to a fire?
time of day, weather conditions, and route obstructions
during dispatch and response phase, what areas should a fire fighter observe for clues that may assist in a fire investigation?
trailers
combustable materials placed in unsusial areas to assist in the spread of fire are known as ______
accelerant
charring on the underside of doors may be an indication of an
preserved as evidence
What should be done with the clothing from a victim of a fire
when the investigation is complete
when is the building turned over to the owner
extensive burn damage to the floor
What evidence would be visible if an ignitable liquid was poured onto the floor and ignited
pyromanic
a pathological fire setter is known as a _____
curiosity
why do children younger than 8 typically start fire
adolescents
2/3 of fires set in vacant buildings are initiated by
extremism
according to NFPA 921, the six motives of arsonists are vandalism, excitment, revenge, crime concealment, profit, and ________
18 years and younger
What group is responsible for the majority of arson fires.
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