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13 Cards in this Set
- Front
- Back
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Name 4 things all fire streams require?
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Pressuring device, hose, agent, nozzle
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What are 3 sizes of fire streams?
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Low volume (less 40 gpm), Handline (40 - 350 gpm), Masterstream (more than 350 gpm)
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Discharge volume is determined by ____ and ____?
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Nozzle design and Nozzle pressure
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Define Breakover?
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Point where forward velocity is lost
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Name 3 fog stream patterns?
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Straight, Narrow (15-45 degrees), and Wide (45-80 degrees)
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What are advantages of Fog Streams?
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Adjustable, Aid Ventilation, Maximum Water Surface Exposed
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What are disadvantages of Fog Streams?
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Less reach and penetration and Susceptible to wind
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What are advantages of Solid Streams?
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Greater reach and penetration and Less thermal disturbance
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What are disadvantages of Solid Streams?
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Can't use foam, Less heat absorption, Not adjustible
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Name 3 types of nozzle control valves?
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Ball, Slide, Rotary
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What are the extinguishing properties of foam?
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Separates fuel and fire, Cools, Smothers (preventing the release of vapors)
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Describe Polar Solvents?
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Alcohols, Acetone, Ketones; All of which are attracted to water
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Desribe Hydrocarbons?
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Petroleum based, Do not mix with water (float); Oil, Gasoline, Benzene, Kerosene
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