Mobile Water Supply CDC Notes Questions and Answers
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Mobile Water Supply CDC Notes
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Mobile Water Supply CDC Notes
Mobile Water Supply CDC Notes
To be considered a MWS an apparatus must have at least _____ gallons - Answer- 1000
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 clos...
Mobile Water Supply CDC Notes
To be considered a MWS an apparatus must have at least _____ gallons - Answer-
1000
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 - Answer- One; 1000; strainer, valve, &
30
A MWS apparatus Must be equipped with a discharge on the ______,________, &
_______ - Answer- Left, right, & rear
A MWS apparatus must be able to dump ___% of it's water volume at average rate
of _____ Gpm - Answer- 90; 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 -
Answer- 2; 1
If a MWS apparatus is equipped with a pump on it it's then called a - Answer-
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 - Answer- Tank-To-Pump, 500
What is the problem with having a front dump valve? - Answer- Have problems
meeting 1000 Gpm flow requirements
What are some of the daily checks? - Answer- Pump 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? - Answer- Pump and Intake Strainers, Pump
Gearbox and Packing Glands, & Rapid Dump Systems
What are the 2 types of service testing? - Answer- Pr-service & Fire Pump service
test
What are the 4 types of pre service test? - Answer- Manufacturer Road Test,
Hydrostatic Test, Pump Certification Test, & Purchase Acceptance Test
What does Manufacturer Road Test measure? - Answer- Acceleration, 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 - Answer-
Determines 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? - Answer- Mandatory 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? - Answer- To 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? - Answer- Hydrant & 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 - Answer- 4; 2; 10; 20
When preforming fire pump service test use hydrant that is rated _____ than the
pump - Answer- More
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 - Answer- 0-100; 35-90; 29
Equipment needed for Fire pump service test? - Answer- 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
What test are conducted during fire pump test? - Answer- Engine speed test;
Vacuum test; Priming device test; Pumping test, Pressure control test, Gauge
test;Tank-To-Pump test
Engine Speed test steps - Answer- 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
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