Chapter 11 Flashcards
Lift is defined as the difference between elevation and the _________ of the pump
center
Static water sources include lakes, rivers, oceans, pools, cisterns and portable tanks
no answer
In order to create draft you must exhaust air from the _______ and the _______
intake hose and fire pump
When drafting, pressure in the intake hose and the _____ drops lower than __________.
pump
atmospheric pressure
drafting and priming are created by ______ vacuum. It is impossible to create ______ vacuum in a fire pump
partial vacuum
total vacuum
because pressure in the intake hose and pump lower than opuside it, water is forced in and continues to rise until the pump is full or the _____and _______ equals atmpospheric pressure.
intake hose and pump
For every 1,000 feet of altitude, the atmospheric pressure decreases by approximately _____psi
.5
Total vacuum or theoretic lift says that water can be lifted a total of _______ feet
33.9 feet
Maximum lift for fire pumpers is usually around ____feet
25
L= ___feet (Hg)
Hg = millimeters of mercury
L=1.13 feet
The 3 lifts are ______lift, ______lift and ____lift
Theoretic lift 33.9 feet
Maximum lift 25 feet on fire pumps
dependable lift: height a column of water can be lifted in suficient quantity to provide addiquate fire streams.
All pumper should have a dependable lift of _____feet
14.7 feet
A pumper should have 100% capability of the pump at ____feet of lift.
At ___feet of lift the pump has 70% of rated capacity
At ____feet of lift the pump is at 60%
10 feet
15 feet
20 feet
When at draft, net pump discharge pressure is the sum of the pump discharge pressure and intake pressure correction that takes into account the friction loss in the _____hose and the _____ of the lift
intake hose
height of lift
Floating pumps can maintain a flow of _____gpm
500
If an App sinks of frozen ground while supplying pumping operations. Stay and draft as you can always call a ______truck after
tow
Floating strainers can be used on water as shallow as a _____
foot
Low level strainers usually used on porta tanks and can draft water as low as an _____ or _____
inch or two
__________ cleaning a fire pump or piping by flowing water through it in the opposite direction of normal flow.
Back flushing
An Auger is a tool used for
boring or drilling holes in floors or ice.
Regardless of depth, all FFs must wear PFD and use _____
safety lines
An underground water storage area is a ____
Cistern
Cisterns usually range from ____gallons to_____gallons
10,000 to 100,000 gallons
to ensure use in freezing weather, a intake strainer on a dry hydrant must be below ______
frost line
Private storage water tanks may be several 100 or tens of thousands of gallon of water
Ground reservoirs are basically man made _____ or ______. The contain _________ of gallons of water.
ponds or lakes
millions of gallons
Pools are hard to get to for drafting. If you can’t get the App close enough, use a ______pump to send water to app.
floating
The number of gallons per cubic foot is _____
7.5 gallons
When connecting to an FDC use at least _____ inch hose for a 1 1/2 inch FDC and at least _____3 inch or two ______inch hose lines
1 3/4
1
2 1/2 inch hose lines
