Card Set Information
What are the three methods of moving water?
Where is the water treatment plant in Hamilton located?
East end of the City on Woodward Ave.
What are the three components of a water distribution grid system?
How close do hydrants have to be in residential areas and high value commercial/industrial areas?
150 m in residential, 90 m in commercial/industrial
What is a dead end hydrant?
A hydrant fed from only one direction
What do you call a hydrant fed from two or more directions?
A looped line or circulating feed hydrant
What are some considerations for dead-end hydrants?
Know where they are
Consider using a different main at a working fire
Laying lines from more distant hydrants known to have adequate water supply
Relay pumping to secure an adequate water supply
Allow water to flow prior to hooking up to remove debris
What are the two types of valve?
Indicating and nonindicating
What are the two types of indicating valves?
Post indicating valves (PIV)
Outside screw and yoke (OS&Y)
What are the two types of hydrants?
What are the 5 types of pressure dealing with water?
Static, normal operating, residual, flow, and elevation.
Describe static pressure
The pressure in a system when the water is not moving
Describe normal operating pressure
The pressure in the system during a period of normal consumption
Describe residual pressure
The pressure that remains in a system when water is flowing
Describe flow pressure
The quantity of water flowing through an opening during a hydrant test (Pitot gauge)
Describe elevation pressure
The amount of pressure created by gravity, also known as head pressure
List the 4 hydrant classes, their bonnet colours, and the flow rates used in the City of Hamilton
AA - Light blue - 5675 L/minute or more
A - Green - 3780 to 5675 L/minute
B - Orange - 1900 to 3780 L/minute
C - Red - 1900 L/minute or less