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NFPA 921 Chapter 18 Origin Determination || A Verified A+ Pass.
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a structure, part of a structure, general geographic location within the fire scene, in which the point of origin of a fire or explosion is reasonably believed to be located correct answers area of origin exact location within the area of origin where a heat source and the fuel interact resultin...

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  • October 13, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • a structure part of a structure general geograph

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  • NFPA 921 Chapter 18 Origin Determination
  • NFPA 921 Chapter 18 Origin Determination

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NFPA 921 Chapter 18 Origin Determination || A Verified A+
Pass.
a structure, part of a structure, general geographic location within the fire scene, in which the
point of origin of a fire or explosion is reasonably believed to be located correct answers area of
origin

exact location within the area of origin where a heat source and the fuel interact resulting in a fire
or explosion correct answers point of origin

determination of the origin of the fire involves the coordination of information derived from one
of more of the following correct answers 1. witness information 2. fire patterns 3. arc mapping 4.
fire dynamics

includes recognizing and defining the problem to be solved, collecting data analyzing data ,
developing hypothesis or hypotheses, and more importantly testing the hypothesis or hypotheses
correct answers scientific method

the hypothesis is considered _______________until testing may be discarded revised or
expanded in detail as new data is collected during the investigation and new analysis are applied
correct answers working hypothesis

testing any ____________ requires an understanding of the associated fire events as well as the
growth of fire and how the fire spread through the structure correct answers origin hypothesis

the purpose of _____________ analysis is to determine whether the resulting physical damage
and available data are consistent with the area of origin hypothesis correct answers fire spread

fire spread scenarios should be analyzed using the principles of _____________ presented
correct answers fire dynamics

when apparently plausible hypothesis fails to keep some item of evidence the investigator should
correct answers reconcile the two

follows a routine sequence, while the specific actions within each activity may be taking place at
the same time correct answers origin determination

an important factor in determining the sequence of pattern production is considering whether the
pattern can be accounted for in terms of correct answers ventilation

data collection for _____________ is done during the initial scene assessment, excavation and
reconstruction, and collection of additional data from witnesses and other sources correct
answers dorigin determination

, the purpose of the ___________ is to determine the complexity and extent of the investigation
identified, required equipment and staffing, and to determine the areas that warrant further
analysis correct answers initial assessment

after ______________ have been is the point at which the investigator may begin the initial
scene assessment correct answers safety issues

the __________ will follow a routine sequence, while the specific actions within each activity
may be taking place at the same time. correct answers order of the examination

during an examination of the _______________ can be used to canvas the neighborhood for
witnesses to the fire and for persons who could provide information about the incident correct
answers surrounding areas

the general construction method and occupancy classified should be noted. a significant
consideration is the ______________ that can occur in a structure consisting of mixed types and
methods of construction correct answers degree of destruction

at conclusion of the _______________the investigator should have determined the safety of the
fire scene, the probable staffing and equipment requirements, and the areas around and in
structure that will require a detailed examination correct answers preliminary scene assessment

allows the investigator to observe patterns on exposed surfaces and to locate evidence that can
assist in making an accurate origin analysis correct answers excavation and reconstruction

careful analysis of the fire scene may help to reduce to a practical level the strenuous task of
________________ correct answers debris removal

whe the investigation involves more than one investigator,discuss ______________ to prevent
discarding something prior to starting debris removal correct answers the purpose

operation of ________________ should cease whenever a person enters the area of hazard
correct answers heavy equipment

if ____________ is a concerndue to using powered equipment, samples of the equipment fluids
should be collected for comparison purposes correct answers contamination

by positioning the equipment outside the building and using the equipment to lift or move items
from the inside to the outside of the building, the heavy equipment will be correct answers less
destructive

use ________________ to minimize damage to the removed item when lifting potential piece of
evidence correct answers rigging

consider _____________ as an alternative to demolition when possible and appropriate correct
answers shoring

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