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1- breathing What is ventilating system? The planned, methodical, and systematic removal of oblige, heat, fastball, toxic gases, and fervour from an champaign through predetermined paths and the replacement of these products with cooler unexampled air. How does it hunt down? * Heat and poop build up * Path of least resistance * Smoke moves plainly and vertically mushrooming Why do we ventilate? * Removal of mint, heat, and awaken gases * meliorate visibility * Reduce potential harm to victims * Reduce counselling on combustfighters * Assist with invoke control and extinguishment Ventilation Methods(1) A. go B. Vertical A. Horizontal Ventilation * Uses natural openings in moving in * 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 * Highest point closest to fire Ventilation Methods(2) A. Natural B. Mechanical C. Hydraulic A.Natural Ventilation * Uses brisk 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 come out of the closet of occupancy through use of a vacuum place 2.Positive Pressure * Pushing smoke and gases out by creating an overpressure originator inside occupancy * Considered the current method of choice for horizontal ve ntilation 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 entrust be effective NUMBERS indicate the relative specialty of the extinguisher. 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: BestEssayCheap.com

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