Chapter 7 Flashcards
A fire stream is influenced by —— as it passes through space?
Velocity
Gravity
Wind
Friction with air
def- Fire Stream
A stream of water or other extinguishing agent after it leaves a nozzle until it reaches the desired point
3 types of fire streams used in the fire service?
Solid
Fog
Broken
def- solid stream
A fire stream produced from a fixed orifice, smooth bore nozzle. Designed to produce a stream as compact as possible with little shower or spray
Solid stream nozzle pressure for
Handline?
Master stream?
Handline - 50psi
Master stream - 80psi
def-Fog stream
Water stream of finely divided particles used for fire control
The reach of the fog stream directly dependent on?
The width of the stream
The size of the water droplets
Wind
Amount of water flowing
def- constant flow nozzle
Designed to flow a specific amount of water at a specific nozzle discharge pressure on all stream patterns.
def- manual adjustable nozzles
Nozzle designed so that the amount of water flowing through the nozzle can be increased or decreased at the nozzle.
def- automatic nozzle
Also called ?
Fog stream nozzle that automatically corrects itself to provide a good stream at the proper nozzle pressure.
Aka
Constant pressure nozzle
Multipurpose nozzle
Automatic nozzle maintains a constant nozzle pressure of approximately
100psi
High pressure fog nozzles operate at pressures up to?
800psi
def- handline
Small hoselines (2 1/2 inch or smaller) that can be handled and maneuvered without mechanical assistance. Generally under 350 GPM
def- master stream nozzle
Nozzle capable of flowing in excess of 350 GPM
4 basic categories of master stream devices
Monitor
Turret pipe
Deluge set
Elevated master stream
