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Essay / Research Paper Abstract
This 3 page paper discusses techniques for ventilating a burning structure. Bibliography lists 3 sources.
Page Count:
3 pages (~225 words per page)
File: D0_HVVentil.rtf
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Unformatted sample text from the term paper:
on a fire; the tactics and tools used by firefighters to ventilate buildings; and the risks to personnel when ventilating a building. Types of Ventilation There are two basic types
of ventilation, horizontal and vertical. Horizontal ventilation "utilizes the doors and windows on the same level as the fire, as well as any other horizontal openings that are available" (Fundamentals
of fire fighter skills, 2004). At times, fire fighters may make additional holes in the walls to aid in horizontal ventilation (Fundamentals of fire fighter skills, 2004). Vertical ventilation "involves
openings in roofs or floors so that heat, smoke and toxic gases escape from the structure in a vertical direction" (Fundamentals of fire fighter skills, 2004). Pathways for vertical ventilation
include stairways, exhaust vents, and ceiling installations such as skylights (Fundamentals of fire fighter skills, 2004). Additional openings can be created by "cutting a hole in the roof or the
floor" (Fundamentals of fire fighter skills, 2004). Ventilation can be either natural or mechanical (Fundamentals of fire fighter skills, 2004. Natural ventilation depends on things like "convection currents" and
the wind to move the smoke and gas out of the building, while mechanical ventilation uses devices such as fans and similar equipment to move the smoke and gas out
and allow clean air to enter (Fundamentals of fire fighter skills, 2004). Effect of Ventilation The effect of ventilation is to reduce the temperature in the burning building, introduce
fresh air, and clear the atmosphere (Tuomisaari, 1997). In some cases, because ventilation involves the introduction of more air to the fire, "more smoke is spread around and the temperatures
rise. The most dramatic consequence is the initiation of a backdraft, where the pyrolyzed gases ignite instantaneously, in the worst case causing a severe explosion" (Tuomisaari, 1997). This is why
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