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NFPA 921 Fire and explosion investigations Questions and Answers $14.49   Add to cart

Exam (elaborations)

NFPA 921 Fire and explosion investigations Questions and Answers

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  • Course
  • NFPA 921
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  • NFPA 921

Absolute Temperature Ans- A temperature measured in Kelvins (K) or Rankines (R). Accelerant Ans- A fuel or oxidizer, often an ignitible liquid, intentionally used to initiate a fire or increase the rate of growth or spread of fire. Accident Ans- An unplanned event that interrupts an activity...

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  • August 3, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NFPA 921
  • NFPA 921
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NFPA 921 Fire and
explosion investigations
Questions and Answers


Absolute Temperature


Ans- A temperature measured in Kelvins (K) or Rankines (R).




Accelerant


Ans- A fuel or oxidizer, often an ignitible liquid, intentionally used to initiate a

fire or increase the rate of growth or spread of fire.




Accident


Ans- An unplanned event that interrupts an activity and sometimes causes

injury or damage or a chance occurrence arising from unknown causes; an

unexpected happening due to carelessness, ignorance, and the like.

,Active Fire Protection System


Ans- A system that uses moving mechanical or electrical parts to achieve a fire

protection goal.




Ambient


Ans- Someone's or something's surroundings, especially as they pertain to the

local environment; for example, ambient air and ambient temperature.




Ampacity


Ans- The maximum current, in amperes, that a conductor can carry

continuously under the conditions of use without exceeding its temperature

rating.




Ampere


Ans- The unit of electric current that is equivalent to a flow of one coulomb

per second; one coulomb is defined as 6.24 × 1018 electrons.

,Arc


Ans- A high-temperature luminous electric discharge across a gap or through a

medium such as charred insulation.




Arc Mapping


Ans- The systematic evaluation of the electrical circuit configuration, spatial

relationship of the circuit components, and identification of electrical arc sites

to assist in the identification of the area of origin and analysis of the fire's

spread.




Arc Site


Ans- The location on a conductor with localized damage that resulted from an

electrical arc.




Arcing Through Char


Ans- Arcing associated with a matrix of charred material (e.g., charred

conductor insulation) that acts as a semiconductive medium.

, Area of Origin


Ans- A structure, part of a structure, or general geographic location within a

fire scene, in which the "point of origin" of a fire or explosion is reasonably

believed to be located.




Arrow Pattern


Ans- A fire pattern displayed on the cross- section of a burned wooden

structural member.




Arson


Ans- The crime of maliciously and intentionally, or recklessly, starting a fire or

causing an explosion.




Autoignition


Ans- Initiation of combustion by heat but without a spark or flame.




Autoignition Temperature

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