Driver operator mobile water Actual Exam
Study Questions with Verified Results
1. Identify FIVE requirements for a MWS apparatus that can be found in
NFPA 1901 –
ANSWER a. An MWS apparatus equipped with a fire pump must have a tank
to pump line at least two inches in diameter and be capable of supplying the
pump with 500 GPM until at least 80% of the tank is emptied.
b. An MWS apparatus must be equipped with at least one external fill
connection connected into the tank that allows the tank to be filled at a
minimum rate of 1000 GPM.
c. The external fill connection should be equipped with a valve, strainer, and a
30 degree elbow.
d.Valves that are three inches or larger must be of the slow closing design.
e. An MWS apparatus must have at least three large tank discharges capable of
discharging 90% of the tank volume at an average of 1000 GPM.
2. Pressure Control Test - ANSWER a. Engage the pump and set it to the
pump capacity.
b. Set the pressure control device.
c. Close the discharge valves.
,d. Note the pump discharge
3. The three parts of the pressure control test require you to close the flowing
valves one at a time: - ANSWER In no less than 3 seconds and no more
than 10 seconds
4. The gauge and flow meter readings with actual pitot tube readings. The two
readings should differ by no more than: - ANSWER 10%
5. The tank to pump flow rate test measures whether the piping between an
apparatus water tank and fire pump meets the minimum flow standards of: -
ANSWER NFPA 1901
6. Rope or test stand - ANSWER Secures test nozzles
7. Pitot tube - ANSWER Measures the velocity pressure of a stream of water
8. Tachometer - ANSWER Checks engine speed
9. Solid stream nozzles - ANSWER Needed to match the volumes pumped for
different tests
10.Compound gauge - ANSWER Checks the pump intake pressure
11.Flow Meter - ANSWER Reads the flow of water directly in GPM
, 12.Identify the TWO most important reasons for maintaining good MWS
apparatus records. - ANSWER Keeps everyone on the team informed about
equipment conditions.
13.When Checking the left front or right front side of the fire apparatus, don't
forget to inspect the: - ANSWER saddle tanks
14.Daily inspection - ANSWER Ensure auxiliary fuel tank is full
Operate pump primer
Inspect auxiliary winterization system.
15.Weekly Inspection - ANSWER Clean intake strainers
16.Pre-service pump certification test are conducted by: - ANSWER An
independent testing agency
17.When using a static body of water as your water source during fire apparatus
service testing, the water surface must not be more than___ feet above the
centerline of the pump intake and the water must be at least _____ feet deep.
- ANSWER 10 Feet above
4 Feet deep
18.If the engine speed check proves the MWS apparatus is running at a
different speed than what which it was originally rated, you need to? -
ANSWER Stop the testing until the problem is corrected.
Study Questions with Verified Results
1. Identify FIVE requirements for a MWS apparatus that can be found in
NFPA 1901 –
ANSWER a. An MWS apparatus equipped with a fire pump must have a tank
to pump line at least two inches in diameter and be capable of supplying the
pump with 500 GPM until at least 80% of the tank is emptied.
b. An MWS apparatus must be equipped with at least one external fill
connection connected into the tank that allows the tank to be filled at a
minimum rate of 1000 GPM.
c. The external fill connection should be equipped with a valve, strainer, and a
30 degree elbow.
d.Valves that are three inches or larger must be of the slow closing design.
e. An MWS apparatus must have at least three large tank discharges capable of
discharging 90% of the tank volume at an average of 1000 GPM.
2. Pressure Control Test - ANSWER a. Engage the pump and set it to the
pump capacity.
b. Set the pressure control device.
c. Close the discharge valves.
,d. Note the pump discharge
3. The three parts of the pressure control test require you to close the flowing
valves one at a time: - ANSWER In no less than 3 seconds and no more
than 10 seconds
4. The gauge and flow meter readings with actual pitot tube readings. The two
readings should differ by no more than: - ANSWER 10%
5. The tank to pump flow rate test measures whether the piping between an
apparatus water tank and fire pump meets the minimum flow standards of: -
ANSWER NFPA 1901
6. Rope or test stand - ANSWER Secures test nozzles
7. Pitot tube - ANSWER Measures the velocity pressure of a stream of water
8. Tachometer - ANSWER Checks engine speed
9. Solid stream nozzles - ANSWER Needed to match the volumes pumped for
different tests
10.Compound gauge - ANSWER Checks the pump intake pressure
11.Flow Meter - ANSWER Reads the flow of water directly in GPM
, 12.Identify the TWO most important reasons for maintaining good MWS
apparatus records. - ANSWER Keeps everyone on the team informed about
equipment conditions.
13.When Checking the left front or right front side of the fire apparatus, don't
forget to inspect the: - ANSWER saddle tanks
14.Daily inspection - ANSWER Ensure auxiliary fuel tank is full
Operate pump primer
Inspect auxiliary winterization system.
15.Weekly Inspection - ANSWER Clean intake strainers
16.Pre-service pump certification test are conducted by: - ANSWER An
independent testing agency
17.When using a static body of water as your water source during fire apparatus
service testing, the water surface must not be more than___ feet above the
centerline of the pump intake and the water must be at least _____ feet deep.
- ANSWER 10 Feet above
4 Feet deep
18.If the engine speed check proves the MWS apparatus is running at a
different speed than what which it was originally rated, you need to? -
ANSWER Stop the testing until the problem is corrected.
