Aragonite Facility Condition
Assessment
at
Ocean Cay, Bahamas
|
=
Client<=
/p>
Han-Padr=
on
Associates, LLP
22 Cortland Street, 33rd Fl
New York, New York 10007
|
for
|
=
&nb=
sp;
AES
Corporation
4300 Wilson Boulevard, 11th Fl
Arlington, VA 22203
|
=
&nb=
sp;
Haley &a=
mp;
Aldrich
465 Medford Street, Suite 2200
Boston, MA 02129-1400
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![3D"Text](3D"OceanCayAragoniteConditionAssessment_files/image003.gif")
Completion
Date
December,
2001
Project Description
Aragonite
is a naturally occurring crystal form of calcium carbonate, CaCO3. It
forms naturally in almost all mollusk shells, and as the calcareous
endoskeleton of warm and cold-water corals. Ocean Cay is the home to an ocean
aragonite mining, storage, and export facility, which occupies a portion of=
the
island. The facilities include
barge unloading, screening, stacking/reclaiming, and shiploading systems. The island is relatively
self-sufficient. There are
accommodations for workers, who rotate on/off the island on a scheduled
basis. Electrical power is su=
pplied
by several diesel generators. Fresh
water is prepared from seawater using a reverse osmosis system.<=
/span>
AES
Corporation was evaluating Ocean Cay as a potential site for a LGN terminal=
and
gas-fired, electrical power generating plant. An assessment of the existing faci=
lities
was needed to ascertain how these facilities, including plans for the expan=
sion
of the aragonite operations, might best be integrated with their plans.
At
the time of the survey, Ocean Cay was handling between 500,000 to 600,000 t=
ons
of aragonite a year. Self-unl=
oading
barges discharge to a shore-side receiving conveyor. The aragonite is screen and stockp=
iled
into two products, an industrial quality grade and a roadway base grade. In a plant expansion for the roadw=
ay
base grade product, the screening operation was added and the corrugated st=
eel
reclaim tunnel was extended toward the shiploader, to provide additional
stockpile capacity for this material.
The facility plans to increase production to 2,000,000 tons per
year. With this, there are pl=
ans to
add a third product. To accom=
modate
this new product, the reclaim tunnel would be extended and the tail of the
reclaim conveyor lengthened.
A
visual site survey was conducted to assess the existing aragonite facilities
and provide a basis for determining the necessary accommodations for both t=
he
existing and planned facilities.
The report described current conditions actions required for the
long-term, and suggestions for how the expansion program could accommodate =
the
LNG additions.
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