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MWS (Mobile Water Supply) CCRE Questions and Answers
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MWS (Mobile Water Supply) CCRE Questions and Answers
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MWS (Mobile Water Supply) CCREQuestions and Answers
"C" in the formula FL = C Q^2 L represents the: - ANSWER-Hose diameter coefficient.
A priming device works by: - ANSWER-Creating a partial vacuum.
All of the following are methods of water discharge used at the dump site EXCEPT: -
ANSWER-Draining.
All of the following are potential water sources for an apparatus fire pump EXCEPT: -
ANSWER-A municipal storm drain.
All of the following are types of portable water tanks EXCEPT: - ANSWER-Locking
tanks.
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 driving an MWS apparatus through areas of
restricted horizontal and vertical clearances are true EXCEPT: - ANSWER-Use the
appropriate turn signal.
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.
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%.
At a water shuttle operation, the second and subsequent mobile water supply
apparatuses may leave the dump site once: - ANSWER-Their entire load has been
dumped.
Before driving over a guarded railroad crossing during an emergency response: -
ANSWER-Look both right and left and proceed cautiously.
Blind curves and intersections - ANSWER-Driver/operator cannot see oncoming cross
traffic and drivers of non-emergency vehicles cannot see oncoming apparatus.
, During an MWS apparatus inspection, the lowest acceptable fuel gauge reading is: -
ANSWER-At least 3/4-full.
During the pre-service hydrostatic test, each pump is hydrostatically tested at a
minimum of: - ANSWER-500 psi over the pump's designed maximum operating
pressure for 10 minutes.
During the set-up of multiple portable water tanks at a water shuttle operation, the
second portable tank is filled: - ANSWER-After the first tank is full and in use.
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: - ANSWER-1,000 gpm.
Floating strainer - ANSWER-May get around the 24-inch minimum depth with this type
of strainer but the filter can only draw water from the bottom.
Flow pressure - ANSWER-the forward velocity of water at the discharge point.
For fill site operations to be successful, it is suggested that you use: - ANSWER-A
pumper at a hydrant to fill the MWS apparatus.
Head pressure - ANSWER-pressure caused by the height of a water supply above the
discharge point.
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 TRUE statements about gravity dump systems. - ANSWER-1. Gravity
dumps rely on nature's gravitational pull to empty water from the tank.
2. Gravity dumps usually employ 8-inch or larger round or square piping with a valve
that extends to the exterior of the apparatus.
3. Manually opened valves on gravity dumps may require someone to climb to the top of
the apparatus tank.
4. The valve on the gravity dump may be designed to open manually or remotely.
Identify the FOUR steps for passing through a straight section of a road or highway. -
ANSWER-1. Maintain apparatus speed.
2. Check the side streets or roads.
3. Check the side and rear view mirrors.
4. Check for oncoming traffic.
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