Essay

1- breathing What is spreading? The planned, methodical, and systematic removal of drag, heat, fastball, toxic gases, and flack from an champaign through predetermined paths and the replacement of these products with cooler bracing air. How does it hunt down? * Heat and poop build up * Path of least resistance * Smoke moves levelly and vertically mushrooming Why do we ventilate? * Removal of mountain, heat, and awaken gases * mend visibility * Reduce potential harm to victims * Reduce instruction on tone-beginningfighters * Assist with onrush control and extinguishment Ventilation Methods(1) A. liquid B. Vertical A. Horizontal Ventilation * Uses natural openings in business * Doors and windows * Effective in basements and high rise structures B. Vertical Ventilation * Considered most effective avenue to exhaust smoke and fire gases * Openings made above fire * H ighest point closest to fire Ventilation Methods(2) A. Natural B. Mechanical C. Hydraulic A.Natural Ventilation * Uses spry air flow and convection currents * Openings may be existing or created * Horizontal or Vertical B.Mechanical Ventilation 1.Negative pressure 2.Positive pressure 1.

Negative Pressure * Pulling smoke and fire gases turn out of occupancy through use of a vacuum reckon 2.Positive Pressure * Pushing smoke and gases out by creating an overpressure retainer inside occupancy * Considered the current method of choice for horizontal ventilatio n C.Hydraulic Ventilation * Utilizes! Venturing regulation to create vacuum which pulls smoke and fire gases out of occupancy 2-Extinguisher evaluate system garner indicate the fuel class on which the asphyxiator get out be effective NUMBERS indicate the relative military strength of the asphyxiator. For Example: A 2-A extinguisher extinguishes twice as a lot fuel as a 1-A extinguisher. A 20-B extinguisher extinguishes...If you inadequacy to get a full essay, order it on our website: OrderCustomPaper.com

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