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CDC - Mobile Water Supply: Questions With Answers
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CDC - Mobile Water Supply: Questions With Answers
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CDC - Mobile Water Supply: Questions With AnswersHow many inches of mercury should the priming device and pump achieve?
Right Ans - 22 inches
Explain the priming device test. Right Ans - Evaluates how quickly a
priming device can create the necessary vacuum to bring water through a
pump to the discharge hose.
According to what NFPA, how much water must an apparatus carry to be
considered a MWS or Tender? Right Ans - NFPA 1901 Standard for
Automotive Fire Apparatus,
At least 1,000 gallons.
Most MWS apparatuses in use today carry, how many gallons of water?
Right Ans - Between 1,500 and 3,000 gallons of water.
Each department must choose the size of the tank for its apparatus based on
what? Right Ans - Local water requirements
Water system limitations
Road conditions
Bridge weight restrictions
What size water tanks are the most efficient during water shuttle operations?
Right Ans - MWS with tanks less than 2,500 gallons.
What size water tanks are the most efficient during stationary water supply
operations? Right Ans - MWS with tanks for the 2,500 gallons.
What three external fill connections can be equipped on the MWS apparatus?
Right Ans - 1. Allows the tank to be filled at a min rate of 1,000 gals/min.
2. Equipped with a valve, strainer, and a 30 degree elbow.
3. Has Valves of slow-closing design (if three inches or larger).
Where should the tank discharge be located on the MWS apparatus? Right
Ans - On the left, right, and rear of the apparatus.
, The tank discharge should be capable of discharging how much of the tank
volume at what rate? Right Ans - 90% of the tank volume at an average of
1,000 gpm.
Medium diameter hose supply lines are used for filling then... Right Ans -
the MWS should have at least two external or direct tank fill intakes piped
directly to the tank.
Large diameter hose is used then... Right Ans - one connection to the tank is
adequate.
If the MWS apparatus is equipped with a FIRE PUMP, it may be referred to as
a...
and must have a tank-to-pump line that is: Right Ans - Tanker-pumper or a
tender-pumper.
1. Capable of supplying the pump with a 500 gpm until at least 80% of the
water in the tank is emptied.
2. At least two inches diameter.
The large tank discharge is commonly referred to as: Right Ans - Dump
valve
What NFPA requires three dump valves to be installed on all MWS apparatus?
Right Ans - NFPA 1901
As you move around the apparatus, what general problems are you looking
for? Right Ans - Fluid leaks, dents, low tire pressure, cleanliness, and
broken, or missing equipment.
When looking at the body panel, what should you be looking for? Right Ans
- Looking for rust, dents, or exposed areas needing touch-up paint.
When looking at the windows and exterior lights, what should you be looking
for? Right Ans - Looking for cracks and discoloration.
When looking at the circuit breakers and/or fuses what should you be looking
for? Right Ans - Looking at the main panel to see if any circuits are tripped
or if any fuses are blown.
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