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