Water Supply Flashcards
A Pitot gauge is used to determine ___ pressure.
Flow Pressure
The pipes that deliver water from the treatment facility for distribution are ___.
Mains
The pipes that deliver water to users and hydrants on individual streets are ___.
Distributors
Where are dry-barrel hydrants typically used?
Cold Climates
What is the term for a large discharge opening on a fire hydrant?
Steamer
How can you determine that a dry-barrel hydrant is still draining?
Place a hand over an outlet and feel for suction.
Pressure in a water distribution system during average consumption is ___ pressure.
Normal Operating
A dry hydrant provides access to a ____.
Static water source.
In a well-designed water distribution system, which type of pattern do water mains follow?
Grid
The flow or quantity of water moving is measured in ___.
Gallons per Minute (liters per minute).
What should be done to avoid water hammer?
Open and close all valves slowly.
What is the decrease in pressure that occurs as water moves through a hose?
Friction Loss
What is a hard suction hose commonly used for?
Drafting from a static water source
Which of the following is one of the 3 factors that determine friction loss?
A) Ambient Temperature
B) Hose Diameter
C) Atmospheric Pressure
D) Water Source
B) Hose Diameter
In a jacketed fire hose, which function does the outer jacket serve?
It adds strength that allows the hose to withstand water pressure
Which type of hose coupling does not have male or female ends?
Storz
An engine lays hose from a water source to the fire scene in a ___ lay.
Forward
After connecting the supply line to the hydrant, how should the firefighter open the hydrant?
Upon receiving a signal from the driver/operator, open the hydrant fully.
What us a function of a hose liner?
Reduce friction loss
Couplings are tightened and loosened with a ___wrench.
Spanner
What is the correct tool to tighten a hard suction hose connection?
Rubber Mallet
Which device splits one hose stream into two hose streams?
Wye
Which hose appliance combines two hose lines into one?
Siamese
When charging a supply line at a hydrant, the fire fighter should___.
Avoid standing between the hose line and the hydrant.
In a ___ lay, the hose is laid out from the fire to the hydrant.
Reverse
A soft suction hose is used to connect a pumper to a ___.
Hydrant
What should be used to clean fire hoses?
Mild Detergent
Which type of adaptor is used to connect two female couplings to each other?
Double Male
Portable water tanks should be positioned in a location that allows easy access from:
Multiple Directions
___ is defined as a water source such as a pond, river, stream or other body of water that is not under pressure.
Static Water Source
The two major hydrant types are:
wet barrel and dry barrel
To properly operate a fire hose nozzle valve, it should be:
opened and closed slowly
What is the term for locations from which an engine can draft water out of a static water source
Draft/Fill Sites
