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Mobile Water Supply: Questions & Complete Answers
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Mobile Water Supply: Questions & Complete Answers
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Mobile Water Supply: Questions & Complete AnswersHow many gallons must an MWS apparatus carry? Right Ans - 1,000
gallons
MWS apparatuses must be equipped with at least? Right Ans - One External
Fill Connection
The External Fill Connection should: Right Ans - - Filled at a minimum rate
of 1,000 gmp
- Has a valve, strainer, and 30 degree elbow
- has slow closing designed valves
A larger tank discharge should: Right Ans - - Be located at left, right and
rear side
- discharge 90% of the tank volume
- average rate of 1,000 gpm
Steering wheel should not move more than? Right Ans - 10 degrees in
either direction
Weekly inspections: Right Ans - -Pump and intake strainers
- gearbox and packing glands
- dump system
During a vacuum service test, the system vacuum and pump priming device
should achieve a column of mercury or at least? Right Ans - 22 inches
Steps for Part II pressure control test: Right Ans - 1.) Set the fire pump to
net pump discharge pressure of 150 psi
2.) Reduce engine throttle until net pump discharge pressure drops to 90 psi
3.) Set the pressure control device to maintain the discharge pressure at 90
psi
4.) Close the flowing valves one at a time
, 5.) Pump discharge pressure should rise no more than 30 psi when all valves
are closed.
Two items that should be included on a daily MWS apparatus records Right
Ans - -Coolant levels
-tire conditions
All fire pumps must meet their capacity from a draft at Right Ans - 10 feet
of lift
To determine the pump discharge pressure when supplying an attack
apparatus, you must add the total pressure loss to the: Right Ans -
Required intake pressure of the apparatus being resupplied
Large diameter hoses are generally defined as hoses with a diameter between
Right Ans - 4 and 6 inches
Three true statements about positive displacement pumps: Right Ans - -
There is a piston type and a rotary gear type
-Many have been replaced by centrifugal pumps
- Some can pump water on the forward stroke and on the return stroke
When a dry supply line is being charged, it's important to open the Right
Ans - Bleeder valve
Steps for stationary operation with a PTO-driven fire pump: Right Ans - 1.)
Position the MWS apparatus
2.) Place transmission in neutral
3.) Set parking break
4.) Operate PTO control
5.) Chock wheels
Brake fade can result in driver/ operator being unable to slow or stop
apparatus Right Ans - Steep grades
When two apparatus approach from opposite directions, one may be forced to
back out Right Ans - Long driveways
Roads may not be clear Right Ans - Inclement weather conditions
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