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- Fire streams reduce tempatures and provide protection during the attack
- A fire stream can be defined as a stream of water that leaves the nozzle until it reaches the desired point
- four elements pump hose extingishing agent nozzle
- discharge pressure nozzle design nozle adjustment condition of nozzle
- Fire streams used for applying water for burning fuel, reducng temp, dispersing smoke and fire gases, reducing tempature over an open fire and protecting firefighters and property
- fire is extinguished or reduced, or room tempature reduced if successful
- sizes - booster line, master streams and some other god damn one
- types of fire streams
- solid fog broken
- smooth - produced with a smooth bore orifice - a stream is effective if it does not lose continuity and doesnt lose height when a breeze is blowing
- disadvantage; cannot be used to mkae different patterns
- fog stream; water droplets, narrow and straight stream fog - fog nozzle 100 psi pressure forward by momentum downward by gravity
- disadvantage; do not have the reach or penetration power. if used improperly, can spread fire and upset thermal layering, and cause steam burns
- broken streams can be made by a rotary distrubition nozzle, two solid streams crossing across in the air
- solid stream nozzles are designed to become smaller and smaller and smaller then stopping to maximize reach and penetration. come in different shapes and sizes but share same characteristics
- fog stream nozzles - create droplets by reflecting water. may have a set gallonage, or have preset gallonage settings.
- water hammer - surge in system, sudden stop of flowing water. makes a sharp clank, sounds like a hammer hitting the pipe. slowly make change, not abrupt.
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