POWER September 2015 - 20

ager for DSI, there are a lot of different
drivers that lead plants to seek a wind
fence solution. Typically, he said, customers
have a certain area that they're
trying to protect. In some cases, plants
are required to monitor fugitive emissions
and changes are required to prevent
violations. In other situations,
fugitive dust is simply causing a public
relations problem.
The direction of predominant winds at
the plant location could be part of the
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■ It is made of polyester fabric that is
highly resistant to the elements.
■ The knitted design is so strong that it
is self-supporting-no cables needed-
for spans of 20 feet or less.
■ The fabric can withstand very high wind
loads (in excess of 120 mph), which is
when the fence is needed most.
■ Permanent installations are designed to
last 20 years or more with no maintenance
required.
■ The slotted-fabric design (Figure 4) is
more effective than a basket weavestyle
design, and it is self-cleaning because
the vertical filaments will move
in the 27-mm-long slots.
■ It has simple attachment hardware with
no cables or clips to install or maintain
due to stretching.
■ If damaged, repair is simple, requiring
only the section and fabric run to be
spliced into the fence.
■ It has a history of proven performance
in all kinds of environments.
Combining Technologies
Gilroy noted that a plant's integrated fugitive
dust control plan might require the
utilization of multiple technologies.
" There's not necessarily any one apContinuously
Improving
Flow Control. Worldwide.
proach that's going to get you where you
need to get, " he said. " Sometimes you
combine technologies. "
For example, DSI offers a Dry Fog system
www.circorenergy.com
CIRCLE 14 ON READER SERVICE CARD
20
www.powermag.com
that uses special air-atomizing nozzles to
produce a very dry fog to agglomerate and
remove airborne dust particles (see " Use
Dry Fog to Control Coal Dust Hazards "
in the July 2010 issue of POWER in the
online archives). Gilroy suggested that
POWER | September 2015
problem, but not always. Buildings, mountains,
valleys, and other unique features
of a site can influence wind currents in
areas too. For this reason, some fences are
planned using computational fluid dynamics
modeling programs.
" The fence is ultimately designed to
slow air movement over the area of concern
to prevent dust from being picked up
and carried away, " Gilroy said.
Some special features of the DustTamer
system include:
4. The right porosity is important.
This scan shows the slotted design used in the
DustTamer polyester fabric. Courtesy: DSI
http://www.circorenergy.com http://www.powermag.com

POWER September 2015

Table of Contents for the Digital Edition of POWER September 2015

Contents
POWER September 2015 - Cover1
POWER September 2015 - Cover2
POWER September 2015 - Contents
POWER September 2015 - 2
POWER September 2015 - 3
POWER September 2015 - 4
POWER September 2015 - 5
POWER September 2015 - 6
POWER September 2015 - 7
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POWER September 2015 - Cover3
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