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MWS (Mobile Water Supply) – Questions And Answers
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MWS (Mobile Water Supply) – Questions And Answers
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MWS (Mobile Water Supply) – Questions And AnswersIdentify five requirements for an MWS apparatus that can be found in NFPA
1901. Right Ans - An MWS apparatus equipped with a fire pump must have
a tank to pump line at least 2 inches in diameter and be capable of supplying
the pump with 500 gallons per minute until at least 80% of the water in the
tank is empty.
And MWS apparatus must be equipped with at least one external feel
connection connected into the tank that allows the tank to be filled at a
minimum rate of 1000 gallons per minute.
The external fill connection should be equipped with a valve, strainer, and a
30° elbow.
Valves that are 3 inches or larger must be of the slow closing design.
And MWS apparatus must have at least three large tank discharges capable of
just charging 90% of the tank volume at an average rate of 1000 GPM.
You were stationed in Alaska in December. You just come back from a
company inspection to find that your stall door will not operate and cannot be
fixed until the following day. To prevent damage from freezing you should.
Right Ans - Drain the piping pump and booster lines to prevent damage.
During MWS apparatus service testing the atmospheric air temperature
should be between Right Ans - 0° F and 100° F
Identify three pieces of equipment needed to conduct service testing on a
MWS apparatus equipped with a fire pump. Right Ans - Tachometer,
smoothbore tips. External test gages.
When testing the priming device on MWS apparatus with a fire pump with a
capacity of less than 1500 GPM the priming device should be able to create the
necessary vacuum in 30 seconds to lift water 10 feet through. Right Ans -
20 feet of hard suction hose.
,Identify four pre-service test for an MWS apparatus equipped with a fire
pump Right Ans - Road test, independent pump certification test,
hydrostatic test, purchase acceptance test.
When performing a vacuum service test, once the engine is turned off, the
column of mercury should fall no more then. Right Ans - 10 inches in 5
minutes.
Identify three critical items that should be included on MWS apparatus daily
inspection checklist. Right Ans - Apparatus unit identification number,
inspected by column, remarks column.
When maintaining MWS apparatus records, you should: Right Ans - Refer
to your departments standard operating procedures for specific guidance.
Identify three items that are checked for leaks during the vacuum test.
Right Ans - Priming device, hard suction hose, pump.
Priming test. Right Ans - Evaluates how quickly a device can create the
necessary vacuum to bring water through a pump to the discharge hose
Discharge pressure gauge test Right Ans - Checks accuracy of discharge
readings obtained when the pump is in operation.
Pumping test Right Ans - Checks overall condition of the engine and pump.
Tank to pump flow rate test Right Ans - Checks weather the piping
between the MWS apparatus water tank and fire pump meet NFPA 1901
standard.
Vacuum test Right Ans - Check for leaks and different devices.
Engine speed check test Right Ans - Checks the rate of the engine speed.
Pressure control test Right Ans - Measures ability of pressure control
devices to maintain certain discharge pressures.
, NFPA 1911 requires an MWS apparatus equipped with a fire pump to be
serviced tested: Right Ans - At least once a year or when it has undergone
extensive pump repair.
Periodic documentation should capture things such as: Right Ans - Safety
inspections.
And MWS apparatus should be started with all electrical switches in the off
position in order to: Right Ans - Start the engine without a load.
And MWS apparatus may have a steering system problems if the steering
wheel can be rotated without moving the front tires more than: Right Ans -
10°
Tracking engine performance across time uses data collected in the: Right
Ans - Fuel, oil, and mileage record.
The pressure control service test measures pressure control devices at three
different points. They are: Right Ans - 90 psi, 150 psi, and 250 psi.
Think you understand the characteristics of an MWS apparatus?
What is the best explanation for characteristics of an MWS apparatus?
Right Ans - An individual personality-each apparatus may perform, react, and
handle differently.
All of the following statements about approaching an intersection are true
except: Right Ans - True- you should always drive at a speed where you can
come to a stop, if necessary, even if it slows you down.
True- you should make eye contact with other drivers to make sure that they
see you.
False- you should run a stop sign to save time if you can see that there is no
other traffic.
True- you should stop at all red traffic signal is even if you lose time.
Identify two examples of abiding by state, local, and department driving
regulations and ordinances. Right Ans - Having the appropriate
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