any, shall be included in the processing of the
final payment. The total power consumption will be
measured at the Government's power input to the FGD
system during the final acceptance tests.
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The guaranteed sulfur dioxide removal efficiency of the Flue Gas Cleaning
System shall not be less than [_____] percent and the outlet sulfur dioxide
emission shall not exceed [_____] kg/106 kJ lb/106 Btu for any load on the
steam generators down to 30 percent of maximum rating while in any normal
operating mode (excluding sootblowing) and burning any coal within the
range specified, when the Government provides lime, water, compressed air,
and other utilities to the interface points in accordance with the
Contractor's process flow diagrams, material balances, and these
specifications. Contractor shall guarantee the removal efficiency
specified with any two boilers and their associated flue gas cleaning
equipment in operation at full load. For [_____] percent sulfur dioxide
removal efficiency, the Contractor shall guarantee the maximum system
stoichiometry (lb-mole of Ca0 per lb-mole of S02 entering the system) at
both 100 percent and 50 percent of the maximum rating of the steam
generator and burning any coal within the range specified. The guarantee
at 50 percent rating shall be based on 50 percent of the design gas flow by
weight and an inlet gas temperature of 121 degrees C 250 degrees F.
Contractor shall specify minimum quality of lime on which stoichiometry
calculations are based as 90 percent available CaO by weight. Any increase
in the guaranteed stoichiometry at 50 percent rating and firing the average
coal will reduce the contract price. The operating stoichiometry will be
measured during the final acceptance tests. The measurements will be made
under normal operation and no special cleaning, adjustments or other
preparations will be allowed. Contractor shall include in the design of
the FGD system the necessary provisions for accurate determination of
operating stoichiometry. The proposal shall include a description of the
method by which stoichiometry may be determined. Contractor shall
guarantee that an atomizer can be changed out while the steam generator
which it serves is operating.
2.6.8
Particulate Removal Performance Guarantees
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NOTE: Emission rates will depend upon local or
state air pollution regulations. Negotiations with
the agencies may be necessary.
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The maximum particulate emission leaving the fabric filter baghouses shall
not exceed [_____] kg/106 kJ lb/106 Btu for any flue gas conditions as
specified while in any operating condition and burning any coal within the
ranges specified. The maximum particulate emission shall be defined as the
average of three complete test runs which shall include a proportional part
of the boiler sootblowing cycle. Bag life shall be guaranteed for a
minimum of two years after date of first flue gas passage through the bags.
Fabric filter baghouse will normally be bypassed during 100 percent oil
firing due to plugging of bags, bag guarantee shall be based upon coal/oil
and soot combination firing only. Soot blowing, with fabric filter
baghouse in operation, shall not void guarantee. If 10 percent or more of
the bags in any given compartment fail within the guarantee period, the
Contractor shall replace and install all bags in that compartment at his
own expense. Replacement of bags on a one-by-one as-fails basis will not
normally be allowed. However, the Contractor will be granted the
SECTION 15864N
Page 37
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