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