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60 Cards in this Set

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Process by which water tneders deliver their loadof water to the emergency scene, travel to a fill site, reload with water, and then return to the emergency scene to dump again.

Water shuttle
What is the safety factor once a relay operation is established?
There are no moving parts
The more apparatus movement that is required, there is greater chance of what?
What is the one factor in favor of water shuttle?
Once the incident is ogver the clean up is less labor intensive
Whay does the transition between shuttle to relay operation need coordination?
So that the hose lay operation does not interfere with the shuttle route.
What are the three major components of a water shuttle operation?
- Fill site
- Shuttle site
- Dump site
What are two primary types of apparatus required to operate an effective watert shuttle operation?
- Pumpers
- Water Tenders
Most water shuttles involve at least how many pumpers?
Pumper located at the water supply source used to fill empty water tenders.
Fill Site Pumper
Pumper located at the fire scene used to draft water from the portable water tanks.
Dump Site Pumper
NFPA 1901 requires that tenders be designed to fill at a rate of at least ____gpm.
1000 gpm
The backbone of any water shuttle operation.
Water tenders
NFPA 1901 requires that a water tender is an apparatus that carries at least how many gallons?
1,000 gallons
The majority of water tenders today carry____-____gallons of water.
1500-3000 gallons
Vehicle weight restrictions generally limit single rear-axle apparatus to a maximum tank capacity of what?
1500 Gallons
Tenders that have water tanks with less than ____gallons and rapid unloading capabilities are the most efficient for use in water shuttle operations.
2500 gallons
Wnater tenders that are strictly used for water shuttle and are equipped with suitable gravity dump system are not required to have what?
A fire pump
Tenders with 750 gpm or larger fire pumps are often called what?
Vaccum pumpers are self-filling at a rate of what with what lift?
2000 gpm with a lift capacity up to 22 feet.
Vacuum pumperscan have discharge rates up to what?
1750 gpm
What are other names used for pumper-tenders?
Weight of a gallon of water?
Weight of a gallon of gasoline?
Weight of a gallon of fuel oil?
Water tenders epuipped with a pump should have a tank-to-pump line capable of supplying ___gpm to the pump until it at least __% of the tank is empty.
500 gpm; 80%
Water tneders equipped with a pump should have apump-to-tank line at least what diameter?
2" in diameter
Water tenders must be equipped with at least one external fill connection that is plumbed directly to the tank and able to fill at a rate of what?
1000 gpm
Water tenders must have one large tank that can empty what percentage of the tank at what rate?
90% of the tank at 1000 gpm
Most water tender tanks are less than _ft tall, meaning the back pressure created by a nearly full tank on a bottom fill inlet is less than _._psi.
6ft ; 0.3psi
What are the two primary types of large tank discharges used on water tenders?
- Gravity dumps
- Jet-assisted dumps
Gravity dumps usually employ round or square piping of what size?
8" or greater
Water dumps that employ the use of a small diameter in-line discharge that is inserted into the piping of the large tank discharge that water is pumped through creating a venturi effectthat increases the flow from the tank.
Jet-assisted dump
Failure to have proper tank venting during quick filling or dumping operations can result in what?
Pressure failure of tank or collapse by suction effect.
A key decision in setting up the water shuttle operation is establishing what?
The route of travel for water tenders traveling between the fill and dump sites.
What route of travel is considered to be the optimum arrangement for conducting a water shuttle operation?
A circular route
What are the safety issues that must be considered when selecting a particular route of travel for water shuttle operations?
- Narrow Roads
- Long Driveways
- Blind curves and intersections
- Winding roads
- Steep grades
- Incliment weather conditions
When a water supply group is established, the person in charge is known as what?
Water Supply Group Supervisor
If the IC initiates a operations section, who does the water supply Supervisor report to?
Operations section chief
What is the typical radio designation for the water supply supervisor?
Water Supply
The water supply supervisor should assign individuals to be in charge of the fill site and dump site who's call signs should be what?
"fill site"
"dump site"
If the IC establishes a water supply branch, what is the title for the person in charge of the area?
Water Supply Branch Director
What is the purpose of the fill site operation?
To reload empty tenders as expediantly as possible.
The ideal fill sight is the one that allows driver/operators to do what?
Enter and exit the fill site without backing up or turning around.
Each hoseline that is used to fill tenders in water shuttle operations should have a gate valave where?
Btween the last and next to last section of hose.
In-line water siphons should be pumped at ___psi and provide ___-___gpm through 4" pipe.
150psi; 700-800gpm
The firefighters that are assigned to handle the tender fill lines are referred to as what?
Make and Break Personnel
What are the three primary methods that can be used to operate a dump site?
- Direct pumping operations
- Nurse tender operations
- Portable water tank operations
This method istypically set up by having the attack pumper lay out a supply line, equipped with a clapper or gated siamese, to a location that is easily accessible to tenders approaching the scene.
Direct pumping operations
This method generallyinvolves a very large water tender that is positioned immediatly adjacent to the attackpumper and fulfills the same function as a portable tank.
Nurse Tender Operations
What three ways can water be unloaded from a tender at the dump site?
- Using a pump on the tender
- Using a dump valve
- Pumping and dumping simultaneously
NFPA 1901 requires all tenders to be able to dump at a minimum average flow rateof ____gpm for the first __% of the tank.
1000 gpm; 90%
A single portable tank works on fires that require relativley low overall flow rates less than what?
300 gpm
A portable water tank set on a level surface should have a capacity that is at least what?
500 gallons
Multiple portable tank dump site operations best serve fire that require flow rates in excessof how much?
If four or more tanks are connected using jet siphons, what might it be advantagous to do?
Have a second pumper draft from a tank solely to supply some or all the siphons.
If all the portable tanks become empty during a water shuttle operation, what can the dump site pumper do?
Continue to support firegroud operations using its onboard water tank.
What is tender performance based on?
- Loading and unloading time
- Vehicle condition
- Drive-train capabilities
- Tank size
What are the two basic methods for developinga flow rating for individual tenders?
-Actual testing of each tender under realistic water shuttle conditions.
- A series of formulas that were originally developed by the Insurance Services Offices (ISO).
Through testing they found that their tenders only dump what percentage of their load?
To receive full credit under the ISO Fire Suppression Rating Schedule, the first tender must start dumping water in how long after the first pumper's arrival? and at what rate for how long?
within 5 minutes; At 250gpm for 2 hours.