MAC/MTT-OPS-1
26 FEB 2019
SECTION 6
Employment
6-8
TANK DRAIN
Remote or manually operated drain valves are
typically used to drain water from the tank after
daily operations or when the water tank is
prepared for maintenance. Gravity or pressure
tank drains are also employed very successfully in
water haulage or supply operations. Pressurized
drains systems work very well when performing
bulk water haulage from a main supply site to
remote fill sites or established holding ponds. This
pressurized system is also very effective in
providing water for drilling and fire suppression
operations.
DUMP BAR
The dump bar application is for laying a heavy
defined pattern of water directly onto the
roadway. This application can be used for
increasing the moisture content of road beds for
compaction, confined areas for which the use of
the spray heads is not desired, narrow haul roads
where discharge beyond the side of the tanker is
not required, confined application in high wind
conditions, and preparation of roadways for
grader applications. The dump bar function is
capable of being operated in the intermittent
mode.
The pressure dump bar is designed to force water
into the upper layer of the road. The pressure
feature is also useful for high wind conditions at
high ground speeds.
If the dump bar is activated (pressure or gravity)
and the water tanker has stopped, damage to the
road surface can occur. Ensure that the dump bar
is OFF when coming to a stop to prevent road
surface damage. Physical and mechanical delays
will occur when turning the dump bar OFF.
The gravity dump bar can also be used as a tank
drain.Water Cannon
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