Other Flashcards
Booster reel lines are usually a ____ foot long, _____ (diameter) rubber line with what kind of nozzle?
150 foot
1 inch
Adjustable gallonage fog nozzle
What are the uses for the decon shower?
Hazardous materials incidents or to decontaminate firefighting personnel
What nozzle can be used to apply water to areas that are otherwise inaccessible to water streams? Such as ____ and ____.
Piercing or penetrating nozzle
voids and attics
In what length sections does forestry hose typically come?
50’ and 100’ sections
What are the three different types of monitors used in Fairfax County?
- Fixed monitors- permanently attached to the pumper
- Portable monitor-Akron Quick-Attack Mercury Monitor
- Combination monitors-fixed to the pumper but can be detached and connected to a ground mount to be used as a portable.
What hose should be utilized to supply the Akron Quick-Attack mercury monitor?
A single 3” supply hose (2.5” may be used, though the friction loss in the line would be higher). A 4” supply hose shall not be used.
What is the maximum inlet pressure for the mercury monitor?
150 psi
What is the appliance loss for the mercury monitor
10 psi
If flowing less than _____GPM appliance loss is insignificant so 0psi will be used for appliance loss.
350 GPM
Flowing over 350 GPM’s appliance loss=
10 psi
Appliance loss for ladder pipes, standpipes, and master streams (except the mercury monitor)
25 psi
Elevation pressure:
For fire ground operations, round ______ to 5psi for every ____feet of elevation or every _________ above or below the pumper.
For fire ground operations, round .434 to 5 psi for every 10 feet of elevation or every floor above or below the pumper.
Maximum safe PDP? (during normal operations)
250 psi
Husky Foam system is what kind of system
Electronic direct injection foam system
When flowing foam with a waterous around the pump proportioner and being supplied from another source the tank fill must be kept open or closed during operation.
Closed to prevent the water tank from becoming contaminated with concentrate.
Waterous around the pump proportioner allows foam solution to flow which discharges?
All discharges
Portable foam eductor:
Must be place how far from pump panel?
Within how many feet of the nozzle?
The nozzle can be no higher than ____ feet above eductor.
50 feet from pump panel
within 200 feet of the nozzle
Nozzle no higher than 5 feet above eductor
All Fairfax County pumpers carry a minimum of _____ Gallons of foam
40 Gallons
Fairfax county CAFS engines carry how much foam and water?
750 Gallons water
40 Gallons class A
40 Gallons class B
CAFS for fire attack consists of _____ water and ____ air with a foam application rate of ____%
2/3 water and 1/3 air
rate of .3%
CAFS for overhaul and exposure protection consists of _____ water and ____ air with a foam application rate of ____%
1/3 water and 2/3 air
rate of .5%
How long can CAFS air compressors be operated for without overheating?
2 hours
When using CAFS, which nozzle/tip creates the best finished product for fire attack?
15/16” smooth bore tip
When using CAFS, which nozzle/tip creates the best finished product for exposure and overhaul?
15/16” slug or ‘gated butt’
Pierce recommends that CAFS only be used in lines up to what length for maximum effectiveness?
250 feet
Can supply pumpers gate down their discharges in normal operations?
They should not gate down their discharges
In a relay, the maximum amount of water being delivered to the fire scene is limited by what two things?
Water source and pumping capacity of smallest pumper
Most Fairfax pumpers are rated at what GPM and pump pressure?
1500 GPM at 150 PSI pump pressure
When operating from a static water source with a 1500 GPM pumper, if the pump pressure is increased to 200psi the maximum flow decreases to _________GPM.
1050GPM
Most fire hydrants in Fairfax County can deliver a minimum of _________ GPM.
1000 GPM
When should sprinkler systems be charged?
When there is smoke or fire showing or upon confirmation of a working fire
T or F
You should await orders before charging a combination fire protection system.
False
These systems should be considered as a standpipe and supplied and charged immediately upon arrival on the scene and without orders.
T or F
Aerial devices should be provided with their own supply pumper if possible.
True
What is the minimum supply line that should be used to supply the aerial device?
One LDH line or two 3” supply lines
When drafting, you should position to utilize which intake?
Side intake
Any time incoming pressure exceeds _____psi, the pump shall be operated in pump gear.
50 psi
T or F
After a water supply has been established, the tank to pump valve shall be left open.
False
After a water supply has been established, the tank to pump valve shall be closed.
