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MWS EOC (Mobile Water Supply) Exam
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MWS EOC (Mobile Water Supply) Exam
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MWS EOC (Mobile Water Supply) ExamA major advantage of a positive displacement pump over a centrifugal pump is that it
can - ANSWER-Pump air, making it self-priming.
According to NFPA 1901, a discharge pressure relief valve must operate within: -
ANSWER-10 seconds after discharge pressure rises 30 psi above the set level.
All of the following factors must be included when determining the total pressure loss
(TPL) except: - ANSWER-Pump pressure loss.
All of the following statements about static water sources are true except. - ANSWER-
The static water source closest to the incident should always be used first.
An important feature of most screw-on intake pressure relief valves is that they: -
ANSWER-Have bleeder valves to vent air when I connected line is being charged.
And MWS apparatus may have a steering system problems if the steering wheel can be
rotated without moving the front tires more than - ANSWER-10°
As operations proceed during water shuttles, make and break personnel at the fill site
should monitor: - ANSWER-Ground conditions.
At a fill site, a cone or similar device is used to: - ANSWER-Mark the stopping point for
an MWS apparatus.
At a water shuttle operation, the amount of water dumped is the amount of water the
tank holds less, - ANSWER-10%
Best type of strainer to use in a shallow stream is a: - ANSWER-Floating strainer.
Both the fill site time and the dump time include the time spent: - ANSWER-
Maneuvering/positioning.
draining - ANSWER-is best method of water discharge
During MWS apparatus service testing the atmospheric air temperature should be
between - ANSWER-0° F and 100° F
During the pre-service hydrostatic test, each pump is hydrostatically tested at a
minimum of: - ANSWER-500 psi over the pumps designated maximum operating
pressure for 10 minutes.
During the vacuum service test, the system vacuum and pump priming device should
achieve a column of mercury of at least: - ANSWER-22 inches.
, Fill site pumpers should have a minimum pump capacity of _____________ gpm -
ANSWER-1,000 gpm.
Flow pressure - ANSWER-Pressure created by the rate of flow or velocity of water
coming from a discharge opening.
Hard suction hose is generally have a diameter of between: - ANSWER-4 and 6 inches.
Head Pressure - ANSWER-is a meassurement based on the force created by the height
of a water supply above a disgharge point.
How many sides are on a tanker - ANSWER-there are 8 sides.
How much larger should a portable water tank used in a water shuttle operation be than
the water tank of the mobile water supply apparatus carrying it? - ANSWER-500
gallons.
Identify four pre-service test for an MWS apparatus equipped with a fire pump -
ANSWER-Road test, independent pump certification test, hydrostatic test, purchase
acceptance test.
Identify the true statement about an MWS apparatus with an automatic transmission. -
ANSWER-The automatic transmission on an MWS apparatus gives you the option of
selecting a gear.
Identify two correct statements about hydrants. - ANSWER-•Grid systems with large
supply mains and looping secondary mains generally have less friction losses and
deterioration.
•if hydrants are color coded, select a light blue hydrant when responding to a large
incident and be sure to test the flow before connecting the hydrant to the fire pump.
Identify two disadvantages of using a nurse tanker operation in a water shuttle. -
ANSWER-All MWS apparatus in the water shuttle are required to have a sizable pump.
Dumping time for each MWS apparatus is significantly higher.
Identify two items that should be included on daily MWS apparatus records: - ANSWER-
Coolant levels.Tire condition.
idnetify four pre-service test - ANSWER-Road test, Independent test, Hydrostatic test &
Purchase acceptance
If using a multi-stage pump for pumping from an internal tank or a hydrant: - ANSWER-
The SERIES/PRESSURE position gives you maximum pressure for a short period.
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