CDC - Mobile Water Supply UPDATED
ACTUAL Exam Questions and CORRECT
Answers
- CORRECT ANSWER -
How many inches of mercury should the priming device and pump achieve? - CORRECT
ANSWER - 22 inches
Explain the priming device test. - CORRECT ANSWER - 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? - CORRECT ANSWER - NFPA 1901 Standard for Automotive Fire Apparatus,
At least 1,000 gallons.
Most MWS apparatuses in use today carry, how many gallons of water? - CORRECT
ANSWER - Between 1,500 and 3,000 gallons of water.
Each department must choose the size of the tank for its apparatus based on what? - CORRECT
ANSWER - Local water requirements
Water system limitations
Road conditions
Bridge weight restrictions
What size water tanks are the most efficient during water shuttle operations? - CORRECT
ANSWER - MWS with tanks less than 2,500 gallons.
,What size water tanks are the most efficient during stationary water supply operations? -
CORRECT ANSWER - MWS with tanks for the 2,500 gallons.
What three external fill connections can be equipped on the MWS apparatus? - CORRECT
ANSWER - 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? - CORRECT
ANSWER - 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?
- CORRECT ANSWER - 90% of the tank volume at an average of 1,000 gpm.
Medium diameter hose supply lines are used for filling then... - CORRECT ANSWER -
the MWS should have at least two external or direct tank fill intakes piped directly to the tank.
Large diameter hose is used then... - CORRECT ANSWER - 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: - CORRECT ANSWER - 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: - CORRECT ANSWER - Dump
valve
, What NFPA requires three dump valves to be installed on all MWS apparatus? - CORRECT
ANSWER - NFPA 1901
As you move around the apparatus, what general problems are you looking for? - CORRECT
ANSWER - Fluid leaks, dents, low tire pressure, cleanliness, and broken, or missing
equipment.
When looking at the body panel, what should you be looking for? - CORRECT
ANSWER - 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? - CORRECT
ANSWER - Looking for cracks and discoloration.
When looking at the circuit breakers and/or fuses what should you be looking for? - CORRECT
ANSWER - Looking at the main panel to see if any circuits are tripped or if any fuses are
blown.
Engine compartment: Engine oil - CORRECT ANSWER - Check whether engine oil is
clean and at full mark.
Engine compartment: air Filter Restriction Gauge - CORRECT ANSWER - Check the air
filter restriction gauge to determine if the air filter needs to be changed.
Engine compartment: Coolant Overflow Reservoir - CORRECT ANSWER - Coolant in
the overflow reservoir should be clean and halfway between max and min level for your
apparatus.
Engine compartment: Cooling Fan, Hoses, and Radiator - CORRECT ANSWER - Check
the cooling fan, hoses, and the radiator for cracks.
Engine compartment: Windshield Washer Fluid - CORRECT ANSWER - Check the
windshield washer fluid level.
ACTUAL Exam Questions and CORRECT
Answers
- CORRECT ANSWER -
How many inches of mercury should the priming device and pump achieve? - CORRECT
ANSWER - 22 inches
Explain the priming device test. - CORRECT ANSWER - 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? - CORRECT ANSWER - NFPA 1901 Standard for Automotive Fire Apparatus,
At least 1,000 gallons.
Most MWS apparatuses in use today carry, how many gallons of water? - CORRECT
ANSWER - Between 1,500 and 3,000 gallons of water.
Each department must choose the size of the tank for its apparatus based on what? - CORRECT
ANSWER - Local water requirements
Water system limitations
Road conditions
Bridge weight restrictions
What size water tanks are the most efficient during water shuttle operations? - CORRECT
ANSWER - MWS with tanks less than 2,500 gallons.
,What size water tanks are the most efficient during stationary water supply operations? -
CORRECT ANSWER - MWS with tanks for the 2,500 gallons.
What three external fill connections can be equipped on the MWS apparatus? - CORRECT
ANSWER - 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? - CORRECT
ANSWER - 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?
- CORRECT ANSWER - 90% of the tank volume at an average of 1,000 gpm.
Medium diameter hose supply lines are used for filling then... - CORRECT ANSWER -
the MWS should have at least two external or direct tank fill intakes piped directly to the tank.
Large diameter hose is used then... - CORRECT ANSWER - 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: - CORRECT ANSWER - 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: - CORRECT ANSWER - Dump
valve
, What NFPA requires three dump valves to be installed on all MWS apparatus? - CORRECT
ANSWER - NFPA 1901
As you move around the apparatus, what general problems are you looking for? - CORRECT
ANSWER - Fluid leaks, dents, low tire pressure, cleanliness, and broken, or missing
equipment.
When looking at the body panel, what should you be looking for? - CORRECT
ANSWER - 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? - CORRECT
ANSWER - Looking for cracks and discoloration.
When looking at the circuit breakers and/or fuses what should you be looking for? - CORRECT
ANSWER - Looking at the main panel to see if any circuits are tripped or if any fuses are
blown.
Engine compartment: Engine oil - CORRECT ANSWER - Check whether engine oil is
clean and at full mark.
Engine compartment: air Filter Restriction Gauge - CORRECT ANSWER - Check the air
filter restriction gauge to determine if the air filter needs to be changed.
Engine compartment: Coolant Overflow Reservoir - CORRECT ANSWER - Coolant in
the overflow reservoir should be clean and halfway between max and min level for your
apparatus.
Engine compartment: Cooling Fan, Hoses, and Radiator - CORRECT ANSWER - Check
the cooling fan, hoses, and the radiator for cracks.
Engine compartment: Windshield Washer Fluid - CORRECT ANSWER - Check the
windshield washer fluid level.
