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19 Cards in this Set
- Front
- Back
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Fire cause |
Sequence of events that led the ignition source to first ignited material |
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Chain of custody |
Evidence log of accountability that documents each change of possession from the evidences discovery until it is first presented in court |
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Fire pattern |
Design of burnt material and it’s travel from point of origin |
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Preliminary scene assessment |
Begins with exterior Determines if structure is safe to examine Physical evidence is preserved during this process |
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Interior examination |
Works from area of least damage to greatest damage. Examine fire patterns Degree of damage to structure and contents |
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Multiple areas of origin |
Indicates intentionally started fire |
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Vehicle investigation safetu |
Ensure airbags are inoperable Check shock absorber bumpers to ensure they are inoperable Do not cut posts on cars that contain seat belt restraint systems Check trunk area for propane or flammables |
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Ignition sequence |
History of the fire, beginning when the ignition source and first fuel ignited and proceeding through spread of the fire for duration of event |
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Competent ignition source |
Has sufficient temperature and in contact with the fuel long enough for ignition to occur |
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Signs of arson |
Time of day Man made barriers blocking hydrants or fdc People quickly fleeing the scene Containers or cans Abnormal behavior of fire when water is applied (rekindles, flashbacks, increase in intensity) Structural alterations (removal of gypsum) Absence of personal possessions Readied legal documents Protected business records |
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Explosion peremiter |
1.5 distance of structure |
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Structure fire perimeter |
Should extend beyond the further piece of evidence |
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Handling debris |
Never dump on the street or out windows |
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Direct evidence |
Found using five physical sense. Is tangible |
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Circumstantial evidence |
Is not tangible but confirms suspicions relating to the incident |
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Physical evidence |
Physical objects linked to arson |
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Make mental notes of... |
Vehicles and people present Status of doors and windows Evidence of forced entry Indicators of unusual fire behavior Condition of the rooms |
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Search and seizure |
A firefighter must have right of entry to search a premises. Consent of owner or warrant is needed to remove fire evidence |
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Spoilation |
damaged evidence altered or lost will jeopardize legal proceedings |
