Exam (elaborations)
Mobile Water Supply CDC Notes Questions and Answers 2024
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Mobile Water Supply CDC Notes
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Mobile Water Supply CDC NotesTo be considered a MWS an apparatus must have at least _____ gallons - answer1000
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 - answerOne; 1000; strainer, valve, & 30
A MWS apparatus Must be equipped with a discharge on the ______,________, &
_______ - answerLeft, right, & rear
A MWS apparatus must be able to dump ___% of it's water volume at average rate of
_____ Gpm - answer90; 1000
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 - answer2;
1
If a MWS apparatus is equipped with a pump on it it's then called a - answerTanker-
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 -
answerTank-To-Pump, 500
What is the problem with having a front dump valve? - answerHave problems meeting
1000 Gpm flow requirements
What are some of the daily checks? - answerPump Primer, Pump Discharge Control
Device, Pump Drive Control, Hose-line, Auxiliary cooling, Auxiliary Fire Suppression, &
Valves and pump instruments
What are some of the weekly checks? - answerPump and Intake Strainers, Pump
Gearbox and Packing Glands, & Rapid Dump Systems
What are the 2 types of service testing? - answerPr-service & Fire Pump service test
What are the 4 types of pre service test? - answerManufacturer Road Test, Hydrostatic
Test, Pump Certification Test, & Purchase Acceptance Test
What does Manufacturer Road Test measure? - answerAcceleration, Top Speed, &
Stopping Capability's
, (Criteria should be put in bid prior to buying)
What is Hydrostatic testing for? And it's done at ___ Psi for ___ min -
answerDetermines if pump and piping can hold fire ground pressure; 500; 10
(department should receive documentation showing it's been done)
What is the Pump Cert test for? And who conducts it? - answerMandatory by NFPA
1901 to test Engine Speed, Vacuum, Primer, Pump, Pressure, Gauges, & Tank-To-
Pump; Conducted by individual testing organizations (Cert should be placed on panel)
What is the purchase acceptance test for? - answerTo repeat road and cert test with a
Manufacturer Representative present to ensure it meets NFPA standards and
Specifications in the bid
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? - answerHydrant & Static; Static
When drafting with regular strainer ensure water isn't least ___ feet deep and strainer
can submerge ___ feet below water; Water must be no more then ___ feet below
flowed through ___ feet of hose - answer4; 2; 10; 20
When preforming fire pump service test use hydrant that is rated _____ than the pump -
answerMore
When preforming Fire pump service test ensure air temp is between ___-___ degree f
and water is between ___-___ degree f with barometer pressure of at least __ inch Hg
corrected to sea level - answer0-100; 35-90; 29
Equipment needed for Fire pump service test? - answerDeluge 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
What test are conducted during fire pump test? - answerEngine speed test; Vacuum
test; Priming device test; Pumping test, Pressure control test, Gauge test;Tank-To-
Pump test
Engine Speed test steps - answer1. Ensure running at same speed rated for as was
new with an empty tank
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