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Mobile Water Supply CDC Notes with Complete Solutions
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Mobile Water Supply CDC Notes with Complete Solutions
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Mobile Water Supply CDC Notes withComplete Solutions
____ tank's can help about water surge - Baffled
A MWS apparatus has medium size hose lines which a MWS should have at least __
that full directly to tank unless using large diameter hose then __ is adequate - 2; 1
A MWS apparatus must be able to dump ___% of it's water volume at average rate of
_____ Gpm - 90; 1000
A MWS apparatus Must be equipped with a discharge on the ______,________, &
_______ - Left, right, & rear
A MWS apparatus must be equipped with a min of ____ exterior fill connection allowing
____ Gpm full rate equipped with a ______, ______, & __ degree elbow which valve is
slow closing if 3 inch or larger - One; 1000; strainer, valve, & 30
After engine and vaccum test in fire pump service test if one fails end test send to get
fixed if not follow these steps to continue - 1) Opening the discharge valve
2) Remove the suction cap and replace with strainer
3) Attach rope to the strainer
4) Lower strainer into the water and tie off the rope
5) Connect test gauge to test fitting on pump panel
6) Connect hoseline to discharge side of pump and deluge gun
7) Secure deluge gun
8) Connect pitot gauge
9) Make pump operational
Daily records documents should cover maintenince checks that could _______ ; also
should identify _____ - checks that could affect daily apparatus performance such as
battery, coolant level, fuel levels, pump valves, and tires; specific apparatus by unit
identification number, (organized according to how the inspection is generally
preformed, have a remake column for notes on specific problems)
Engine Speed test steps - 1. Ensure running at same speed rated for as was new with
an empty tank
2. Can be tested using tachometer on engine or handheld tachometer/revolution
counter
3. If doesn't pass stop all testing until fixed
4. On closed road or open highway bring to max speed then back down to normal
speed, then compare test to results to new
Equipment needed for Fire pump service test? - Deluge gun: for high volume flows;
, Exterior Test Gauges: Verifies correct readings capable of reading 0-30 inch Hg for
intake and 0-400 Psi discharge unless compounds then 0-600 Psi;
Forms & Flow Tables: to record test results;
Tachometer: verifies engine speed;
Smoothbore tips: to match volume being pumped;
Pitot tubes: to measure velocity of water had knife edge and air chamber rated at least
0-600 Psi;
Ropes,chain, & test stand: for securing test nozzle
Fire Pump service test should be done with what two sources of water? And which
source is preferred as a true test of pumps ability? - Hydrant & Static; Static
Fuel, Oil, and Mileage Records are Helpful for ______; In larger departments and
apparatus maintenance organization or on staff apparatus mechanic may perform these
documentations - tracking engine performance based fuel consumption and for ensuring
oil and oil filters are changed
Gauge test steps - Check flowmeter and discharge meter to ensure accurate discharge
pressure information
1) Make sure all discharges are closed and capped
2) Slightly open each discharge valve
3) Increase throttle
4) All gauges should read 150 psi
5) Check each at 200 and 250 psi
6) Determine if the gauges need recalibration, repair, or replacement
•To test flowmeters you need a hoseline with a smooth bore nozzle tip must be
connected to each discharge being tested not all discharges have to done at once
•Flow will be calculated using a pitot tube reading taken at discharge of smoothbore tip
•Readings should not be off by more then 10%
If a MWS apparatus is equipped with a pump on it it's then called a -
Tanker-pumper/Tender-pumper
If equipped with a fire pump it must have a __________ line capable of supplying pump
with ____ Gpms until at least 80% of water is emptied and at least 2 inch in diameter -
Tank-To-Pump, 500
Inspection reports Capture complete mechanical inspections of mws apparatus
performance by mechanic these reports may cover _____; Usually include ________ -
all systems and accessories mounted on a mws apparatus or may be item specific;
Replacements, insurance, and data references
NFPA requires that as a minimum MWS must attain a speed of __ mph from a standing
start within __ sec and have a top speed of not less than __ mph - 35; 25; 50
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