[proposed][bid]. At least two of the five installations shall have been a
fly ash application and at least two of the five shall have utilized the
pulse jet cleaning method. The Contractor shall also have provided at
least one dry FGD system on a coal-fired boiler that has been utilizing a
spray dryer sulfur dioxide absorber and a fabric filter baghouse is in
operation at least 24 months prior to the close of bid date for the
proposed system. The previous commercial system shall have the following
design features in common with the system to be provided under this
contract:
a.
Lime slurry preparation system including storage bin and lime
slaker;
b.
Rotary atomization, or two-fluid nozzle atomization using
c.
Spray dryer design inlet temperature of 177 degrees C 350 degrees F
or lower; and
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NOTE: 80 to 85 percent sulfur dioxide removal is
possible with most commercial units. Negotiate with
most commercial units. Negotiate with state and
local air pollution authorities prior to bidding
emission trading should be utilized. Emission
trading includes trading, off-sets, and banking.
Ensure that any reductions in emissions are banked
for future use or sale.
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d.
Minimum [_____] percent sulfur dioxide removal over a gas flow
range of 30 percent to 100 percent of design gas flow. Process
control system used and instrumentation provided shall be the same
as those in applications at pilot plant or commercial
installations use for qualifying experience.
1.5.1.1
Auxiliary Manufacturer Experience
The lime slurry individual equipment may be the manufacturer's standard,
but the particular combination of that equipment into a lime slurry
preparation system shall have a history of successful and reliable
operation for a period of at least three years. Mechanical draft equipment
and appurtenances and ductwork and expansion joint equipment and materials
shall have an acceptable history of satisfactory reliable operation in
industrial steam plant use for a period of at least three years at
comparable temperature, pressure, voltage, and design stress levels. The
Contractor shall provide information necessary to demonstrate history of
operation.
1.5.2
Certificates
1.5.2.1
Pipe Welding Procedures
Submit the welding procedures and the heat treatment records for pipe
fabrication.
1.5.2.2
Weld Testing Procedures
Describe procedures for nondestructive testing which shall be performed on
SECTION 15864N
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