Suburban and Rural Water supply Flashcards
Three types of operations during Rural Water
Nursing
Relay
Shuttle
Goals of rural water supply operations
Rapid
Efficient
Expandable
Uninterrupted
What is known as a Non-Hydrant Location
Known location where hydrant is more than 2000 feet from a given structure
Failure of infrastructure and or limited access highways where water suppy may significantly affect the mitigation of the incident
Relay operations may not exceed ______ in distances
3000 Ft
Who has priority a dump sites
Tankers
Location Of Dumpsite
Tipically located near end of driveway
Must be in a location that allows for easy access, turnaround and travel routes for shuttles
Engines involved in shuttles will attach to supply lines that are…
Away from the dumpsite and pump water off to not impede movement of tankers
Appropriate PPE at dumpsite
Traffic Vests and FF Helmets
Who Connects and disconnects fill lines at fill sites
5th Due Engine Crew
“Fill Site Crew”
to facilitate a rapid turnaround
PPE to be worn at fill site and distance from water to wear PFD
Traffic Vests
PFDs when working within 10 ft of open water source
Tanker Flow Calculation
(Tanker Capacity - 20% of capacity) Divided by Round Trip Time
Water Usage Agreement
Code of VA (2015) Title 27 § 27-20
To prevent spread of fire FDs have the right to acquire water from whatever source is available
Tanker Task Force
1 Engine
3 Tankers
1 Command Officer
Nursing Operations 1st Engine
Lay Out LDH with siamese from suitable point
Nursing Operation 1st tanker
Position close to attack engine
Connect LDH to attack engine and supply water
Drop Siamese if it hasn’t been done already
Nursing Operations 2nd Engine
Complete set up of nursing operation
If no tankers available supply water into system
Nursing Operations 2nd Tanker
Supply water into system at nursing site
Join shuttle
if needed drop rural water equipment
Nursing Operations 3rd due engine
Supply water into system if no tankers
Position out of route of travel
Nursing operations 4th due engine
Supply water into system
Position out of route of travel
BECOME RIT
Nursing operations 5th due engine
How many stations and how far apart
Set Up Fill Site
Establish 2 fill stations sufficiently apart
Direct Fill Operation: 1st due engine
Dumpsite is less than 200ft
Lay in or hand jack back to dump site
Direct Fill Operation: 1st tanker
if less than 200 ft from incident
Position out of route of travel at dump site, (driveway entrance)
Connect line to 4” siamese valve attached to 1st engines supply line
serve as direct fill tanker
Direct Fill Operation: 1st tanker
more than 200’ but less than 1000’
Proceed with 1st engine and supply it
Direct Fill Operation: 1st tanker
more than 1000’
Refer to preplan and lay out supply line from predetermined location to 1st engine
Direct Fill Operation:
2nd engine
Less than 200 Ft: transfer water to tanker, if non available, supply attack engine through siamese
200 to 1000 ft: Lay out from dump site to 1st tanker and supply tanker
1000ft : Lay out from predetermined preplan
Direct Fill Operation:
2nd tanker
Less than 200’: Transfer water to 1st tanker and shuttle
200’ or more: Position at dump site, connect to siamese attached to 2nd engine supply line and be direct fill tanker
Direct Fill Operation:
3rd engine
Driver transfer water to tanker at dump site
join the shuttle
Direct Fill Operation:
4th engine
transfer water to tanker,
driver stays with rig to join shuttle
Shuttle Operations: 1st tanker
position close to attack engine
Drop a siamese if not done by 1st engine
shuttle operation: 2nd engine
Establish nursing operation
Establish Dump Site Operation
Leave nursing set up in place for supplemental supply or to fix any dumpsite failures
shuttle operation: 3rd engine
Crew staffs dump site
supply water into system when no tankers are available
Position out of route of travel
shuttle operations: 4th due engine
transfer water to tanker at dump site
Join Shuttle if needed
At what distance is a relay operation feasible
what can be set up prior to as supplement
Feasible at distances over 1 mile
Recommended a water shuttle supplement relay as its being set up.
What Sources where Dry Hydrants typically installed
Ponds, Lakes or streams
sometimes swimming pools
When should dry hydrants be backflushed
Tested and backflushed every 6 months
needed to connect and draft from a dry hydrant
Need 4.5” to 6” double female National Pipe Taper bell Adapter
6” double female
Storage underground tanks should be checked….
Every six months for proper operation
Storage tanks (underground) Should NOT
Be used as sole water source due to typical sizes
Static water sources
Ponds, Lakes, Rivers, Bays, Streams and Pools
consider risk vs benefit when using pool due to needed weight from water to support construction of pool
Minimum equipment carried on rural engines
Two 6” Hard sleeves
6” floating dock strainer
LDH: 1000ft min or 2000ft of 3”
Siphon Device
Adapters 5 to 6”
Adapters 4 1/2 to 6” double female
8 Adapters: (Four 2 1/2” male to 4” stortz)
(Four 2 1/2” female to 4” stortz)
4” siamese, manifold or gated wye
Two gated wyes set up for 4” to 2 1/2 connections
Preferred methods for continuous water supply at rural setting
Nursing - Direct Fill
Dump Tanks Sizes
1500 Gallons: 10’3” x 10’3” x 30’
2100 Gallons: 11’3” x 11’3” x 30’
2500 Gallons: 12’3” x 12’3” x 30’
3000 Gallons: 13’3” x 13’3” x 30’
Low-Level Suction Strainer minimum water depth and maximum flow
Allow for water level to be used up to 2 inches
Max flow: 750 GPM
Low Profile Jet Siphon Strainer can be used to transfer water from one drafting tank to another:
What does it allow engines to do
How do you establish flow
Minimum flow
Allows engines the ability to get water from dump tanks without drafting
Charging 1 3/4 a continuous flow is established
Minimum flow for siphon is 500gpm
How does the Jet Siphon move water
How many GPMs does it move between tanks
uses venturi effect
moves up to 800 gpm between tanks
Maximum distance between engines during a relay
1000ft
Water storage tank must be ______ after use
systems must be refilled after use
Dry Hydrant Measurements
Connnection to ground: 24”
Connection to water level: 20ft max (10ft or less preferred)
Backflush before use
How many dump tanks are carried by tankers
Size of dump tanks should equal what capacity
One or Two
The capacity of the tank which is carrying them
At what pressure should the clappered siamese dropped at the dump site be supplied at during a nursing operation
70 psi
At what minimum rate should the fill site engine transfer water to tankers
One at a time tankers shall be filled at
1000 gpm at 100psi
NOVA recommendation for a tanker flow and capacity
1000gpm pump
2000 gallon tank
How can additional tankers and engines not needed in a realy supply their water to the fireground
Through a designated relay engine assigned by the WSGS
If A fireboat is employeed as part of the water supply operation what should be assigned to its location
1 engine
How can weather hinder the use of static sources
Drought: water level too low
Extreme Cold: Ice must be cut to access water
Flooding: Debris can clog strainers
How does an automatic air primer operate
Uses air supply from apparatus onboard air tanks to evacuate air from suction hoses and the pump with a venturi effect
What will an automatic air primer placed in “automatic mode” do
Priming automatically begins when discharge pressure drops below 20 PSI
At what pressure should clappered siamese be supplied a
70 PSI
