Fire Engineering Chapter 16 Fire Streams
Water to steam expansion:
1,700 times
Nozzle reaction for 2.5 line fog?
126 lbs
Acceptable fire flow for interior residential fire attack.
150 gpm
Constant gallonage nozzle 100 PSI =
150 gpm
Commercial fire flow:
250 gpm
Gallonage for 1.25, 1 1/8?
324 266
ADULTS acryonym: requiring the use of 2.5" lines
Advanced fire on arrival Defensive ops Unable to determine extent Large uncompartmentalize Tons of water Standpipe operations
Fog nozzles made by who?
Charles Oyston 1863 NY
When water turns to steam it does what?
absorbs an addtional 970 BTUs
Nozzle reaction force:
between 75 and 45 lbs
Automatic nozzle is what?
constant pressure nozzle
Primary way water extinguishes:
cooling
Expansion of water at 1,000 degrees
expands to 4000:1
Nozzle reaction factors?
flow rate and nozzle pressure
Smooth bore tip size should be what?
half the size of the inside diameter of the hose.
Modified attack:
move from ceiling to burning things
Should the officer be on the hoseline?
no
Indirect attack:
no life hazard, ceiling at 1,000 degrees no vent, defensive
BTU:
raise 1 lb of water one degree fahrenheit
Combination attack:
rotate stream clockwise hitting ceiling walls and floor, defensive
If you apply water to ceiling then what?
sweep along floor to push away scalding water
