Mobile Water Supply Apparatus
How does NFPA 1901 define a mobile water supply apparatus? - Answer- A vehicle
designed primarily for transporting water to fire emergency scenes to be applied by
other vehicles or pumping equipment.
This apparatus is required to have what? - Answer- A pump, but not necessarily a
fire pump as defined on other vehicles.
A large percentage of mobile water supply apparatuses are built on
____________________, but there are substantial amounts built on
________________ as well. - Answer- Commercial-style chassis, custom chassis
Why are tankers prone to rollovers? - Answer- They have a tendency to be heavy,
large vehicles w/ a high center of gravity.
When axle loading becomes questionable, what should happen? - Answer- The
purchaser should either consider adding axles or reducing the water tank capacity.
As much consideration should be given to ___________________ and
______________________ as is given to power or horsepower. - Answer- Braking
and retarding the speed of the vehicle
A fully-rated fire pump is ___________________________ by NFPA 1901 on mobile
water supply apparatuses. - Answer- Not required
What size water tank do some manufacturers recommend not exceeding if the
chassis has a fully-rated fire pump? - Answer- 1250-gallon water tank
What style fire pump might create the better weight-balanced vehicle? - Answer- A
front-mount style fire pump
NFPA 1901 requires what on mobile water supply apparatus? - Answer- A min. 2
inch tank fill line and two preconnected hose line discharges.
An external fill line capable of filling the water tank at _______________ is required
along w/ the capability to dump water to the _______, __________, and
____________. - Answer- - 1000 gpm minimum
-left, right, and rear
The dump valves must be capable of dumping what percentage of the tank at what
gpm? - Answer- - 90%
- 1000 gpm or greater
What sizes are the side and rear dump valves normally? - Answer- 10 to 12 inches in
diameter and are commonly butterfly valves
How does NFPA 1901 define a mobile water supply apparatus? - Answer- A vehicle
designed primarily for transporting water to fire emergency scenes to be applied by
other vehicles or pumping equipment.
This apparatus is required to have what? - Answer- A pump, but not necessarily a
fire pump as defined on other vehicles.
A large percentage of mobile water supply apparatuses are built on
____________________, but there are substantial amounts built on
________________ as well. - Answer- Commercial-style chassis, custom chassis
Why are tankers prone to rollovers? - Answer- They have a tendency to be heavy,
large vehicles w/ a high center of gravity.
When axle loading becomes questionable, what should happen? - Answer- The
purchaser should either consider adding axles or reducing the water tank capacity.
As much consideration should be given to ___________________ and
______________________ as is given to power or horsepower. - Answer- Braking
and retarding the speed of the vehicle
A fully-rated fire pump is ___________________________ by NFPA 1901 on mobile
water supply apparatuses. - Answer- Not required
What size water tank do some manufacturers recommend not exceeding if the
chassis has a fully-rated fire pump? - Answer- 1250-gallon water tank
What style fire pump might create the better weight-balanced vehicle? - Answer- A
front-mount style fire pump
NFPA 1901 requires what on mobile water supply apparatus? - Answer- A min. 2
inch tank fill line and two preconnected hose line discharges.
An external fill line capable of filling the water tank at _______________ is required
along w/ the capability to dump water to the _______, __________, and
____________. - Answer- - 1000 gpm minimum
-left, right, and rear
The dump valves must be capable of dumping what percentage of the tank at what
gpm? - Answer- - 90%
- 1000 gpm or greater
What sizes are the side and rear dump valves normally? - Answer- 10 to 12 inches in
diameter and are commonly butterfly valves
