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Use:
1) Disperse small oil spills (less than 150 barrels), or 2) where
dispersant must be applied to a small specific area, or 3) when
aircraft cannot be used, or 4) to test the effectiveness of dispersant
on an oil.
Description:
A skid mounted dual pump spray system
utilizing seawater as a carrier for dispersant. Dispersant and
seawater pumps are individually
controlled and both fluids are metered
individually. Pumps are hydraulically powered from the vessel system
on M/V Timbalier Bay
or a separate power pack if mounted
on a vessel of opportunity. Dispersants are stored and transported
in a 300-gallon stainless
steel cargo tank. Fluids are applied
through an adjustable spray nozzle attached to the fire monitor
that is mounted on the skid.
For dispersing
a windrow of oil the vessel travels parallel to the slick
with the monitor pointed at a right
angle to the direction of the
vessel and almost parallel
to the water surface. The spray nozzle
is then adjusted to yield a uniform
linear pattern on the water surface.
Depending on wind velocity, a 40’ - 60’ pattern can be obtained. The resulting
spray swath width, vessel speed, and
desired gallons of chemical per acre
are used to determine the correct dispersant pump injection
rate in gpm.
The CGA
skimming vessel Grand Bay, Bastian Bay and RW Armstrong have built-in
spray systems with identical components,
except dispersant tanks hold 350
gallons.
CGA/MSRC
personnel operate the system under the direction of the customer
or authorized representative. Aerial
observation and direction are recommended.
Appropriate
governmental approval is required before any dispersants are
applied.
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