Engine Conpany Flashcards
Travel of hear through space?
Radiation
3 ways fire travels
Radiation
Conduction
Convection
Travel of heat through motion and heated matter?
Convection
Is the travel of heat through a solid body?
Conduction
Which if the three sources of heat travel can contribute to flashover alone?
Convection
Which source of heat travel contributes to flash over, however can not cause flashover alone?
Radiation
A portable unit that can be either mounted on or detached from pumper
Deluge set
Disadvantage if the reverse lay?
Does not get water to the fire as fast.
What type of building might you not be able to see a fire in the rear?
Garden apartments
Standard way of indicating that a room has been searched, so there is no duplication?
Place light furniture in the doorway with legs pointing it of the room.
3 factors influence the movement of water?
The water source
The pumper
The hose
There are 4 possible sources of water at the fire ground
Water main
Drafting
Booster
tankers
Static pressure
Pressure of the hydrant at rest
For 5% drop
10%
20%
5 3 equal
10 2 more equal
20 1 more equal
What is a triple combination pumper?
Pump
Booster tank
Hose
During relay pumping What pressure should be pumped?
150psi
For safest and most effective operations for interior firefighting where civilians and ff will be in the area, what should be used?
Solid stream or dog nozzles adjusted to straight stream
The ___ degree fog angle produces a combination of reach and fog pattern
30 degree
Solid stream from a fog nozzle is still a ___ stream
Broken
A typical 1 1/2” line equipped with a fog nozzle will discharge under proper pressure from ___ to ____ gpm
90-100gpm
1 3/4” can discharge with either dog or solid stream ____ gpm
200
3 types of fog nozzles
Constant flow
Variable adjustable
Automatic
Disadvantage of an automatic nozzle?
Will produce 100psi nozzle pressure and maintain a “good looking stream” but it may be ineffective.
When lines are take up face of the building, how many sections of hose are required to reach 5 stories?
1
How many sections needed for each floor when going up stairways?
1 section
Backup lines should have a ____ reach an deliver _____water than the initial attack lines. In general backup lines should be ____?
Greater reach
More water
One size larger
When are back up lines to be used?
When Initial attack lines cannot quickly control the fire.
Ideal position for exposure protection?
One that maximizes the reach and effectiveness of that stream while providing ff’s shelter from radiant heat
Where are vertical channels normally placed in commercial buildings?
Toward the rear
Where are vertical channels placed in apartment buildings?
Most often found near the kitchens and bathrooms. Each shaft is placed so as to serve two,four or more apartments
I attack a fire from below, an opening should be made at about ?
Waist high
What’s a wagon pipe?
Deck gun
Gpm of a 1 3/4 too on master stream?
800 gpm
2 inch rip gpm of master stream?
1,000 gpm
1 1/2” too of master stream gpm?
600
No more than ___ft of hose between a pumper at the fire and a heavy stream?
100ft
Interior hose stations to be used by occupants of a building is referred to as?
House line
Minimum flow and psi required for wet system standpipe?
250gpm
65 psi to the roof
Second requirement of wet standpipes is ___psi on a ____ tip to ___ft of ___” hose?
40psi
1 1/8” tip
100ft
2.5”
Two problems with house lines?
Poorly maintained Rarely tested
Secondly due to over confidence residence they do not call 911 immediately.
Most modern codes require a riser outlet within ___ft of every office and apartment door?
125ft
A standpipe connection is generally placed on ____, within ____ on which the words standpipe system?
The wall
A rectangular plate
Automatic sprinklers are places within a _____ plate?
Circular
Minimum size for a standpipe is ___”
4”
When hooking up to a standpipe, which side do you hookup first?
Left
Most standpipes are tested to?
225psi
What is a wall hydrant?
Outlets from gravity tanks, elevated water sources.
How many daft will a sprinkler head cover?
100 SQFT
4 types of sprinkler systems?
Wet
Dry
Preaction
Deluge
What is a reaction system?
A dry system with the addition of of air exhausters controlled by heat detectors.
What is deluge system?
Designed to deliver large amounts of water, heads are open at all times.
Sprinklers are tested at?
200psi
Set to ___psi for sprinkler system
125psi
