Water Supply Flashcards
1
Q
How close do static sources need to be to engine?
A
-20 Feet
2
Q
Dry Hydrant
A
- Drafting Hydrant
- Strainer on one end, connection for hard suction on other
- Minimum 24” of water around strainer in all directions
3
Q
NFPA 1142
A
-Standard on Water Supplies for Suburban and Rural Firefighting
4
Q
Mobile Water Supply Apparatus
A
- Tender
- Carry 1,000 to 3,000 gallons, sometimes up to 5,000
- Dump valve can unload 3,000 gallons in one minute
5
Q
Portable Tanks
A
-Hold between 600 to 5,000 gallons
6
Q
3-Parts of Municipal Water System
A
- Water Sources
- Water Treatment Facilities
- Water Distribution System
7
Q
Water Sources
A
-Wells, rivers, streams, lakes, reservoirs (man-made storage facilities)
8
Q
Water Treatment Facilities
A
- Removes impurities from water
- All water in system must be drinkable
9
Q
Water Distribution System
A
- Most rely on pumps to provide required pressure
- Gravity-feed system uses high ground to provide water to lower-living users
- Most municipalities rely on pumps and gravity (Albuquerque)
10
Q
System of Mains
A
- Preferably in a grid
- Primary Feeders to Secondary Feeders to Distributors (Largest, Smaller, Smallest)
11
Q
Dead-End Water Main
A
-Supply water from one direction
12
Q
Control Valves
A
-Allow different sections of water distribution to be turned off
13
Q
Shut-off valves
A
- Located at connection between underground mains and distributor pipes
- Control flow to individual customers or individual hydrants
14
Q
Albuquerque Dry Barrel Hydrants
A
- 7 cubic feet of gravel located at base
- 36 inches of clearance around hydrant
- Steamer always facing street
- Check hydrants annually/after each use
15
Q
Static Pressure
A
- Pressure in system when water is not moving (potential energy)
- Measure by placing pressure gauge on hydrant port and opening valve without flowing water
