Tender Document for Repowering Project of Ghorasal 3rd Unit - BPDB
Tender Document for Repowering Project of Ghorasal 3rd Unit - BPDB
Tender Document for Repowering Project of Ghorasal 3rd Unit - BPDB
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(2) Minimum KVA rating <strong>of</strong> generators : The generator KVA rating at<br />
0.80 power factor shall<br />
match or exceed gas/steam<br />
turbine drive output under all<br />
load operating conditions.<br />
3.3 Combined Cycle and Ancillary Equipment<br />
3.3.1. Basic Equipment Requirements<br />
The Gas Turbine generating units (Simple Cycle) shall be <strong>of</strong> well-proven design<br />
and the <strong>of</strong>fered model <strong>of</strong> Gas Turbine Generating unit (<strong>of</strong>fered model shall be<br />
within the evolution <strong>of</strong> frame), <strong>of</strong>fered or higher capacity similar type HRSG<br />
manufactured by proposed manufacturer, <strong>of</strong>fered or higher capacity similar type<br />
<strong>Unit</strong> Trans<strong>for</strong>mer <strong>for</strong> GT, manufactured by proposed manufacturer shall have<br />
satisfactory operating experience outside manufacturer's country <strong>for</strong> at least 2<br />
(two) years. <strong>Tender</strong>er shall have to submit separate certificate in this respect,<br />
otherwise <strong>Tender</strong> shall be rejected.<br />
The plant shall require centrifugal type gas booster compressors (GBC<br />
manufacturer will be Man Turbo / Atlas copco, Country <strong>of</strong> origin will be Germany/<br />
USA) as the supply pressure <strong>of</strong> natural gas is in the range <strong>of</strong> 80 - 150 psig.<br />
The extent <strong>of</strong> supply shall include, but not be limited to, the equipment described<br />
herein. All equipment comprising the gas turbine & steam turbine package shall be<br />
pre-assembled in the factory.<br />
(1) The total net base rated output <strong>of</strong> the power plant after conversion to combined<br />
cycle at site conditions (35 0 C, 1.013 bar, 98% relative humidity) shall be not less<br />
than 600 MW.<br />
No <strong>Tender</strong> which proposes less than 600 MW output at site conditions will not be<br />
accepted.<br />
(2) Number <strong>of</strong> generating units : Two(2) unit(s) <strong>of</strong> gas turbine<br />
and one (1) unit <strong>of</strong> existing steam<br />
turbine.<br />
(3) Operating pattern<br />
- Simple cycle mode : Base load as well as peak load.<br />
- Combined cycle mode : base load operation.<br />
3.3.2 Main Steam System<br />
The main steam system <strong>for</strong> the combined cycle unit coming from main<br />
header fed from heat recovery steam generator. To be connected to the existing<br />
header <strong>of</strong> 210 MW power plant (3 rd <strong>Unit</strong>)<br />
Super heater outlet on heat recovery steam generator shall be fitted to<br />
safety valve, non-return valve, by-pass valve and header shut-<strong>of</strong>f valve.<br />
The feeder shall also be fitted with motor-operated vents and drains which<br />
Re-Powering <strong>Ghorasal</strong> 210 MW 3 rd <strong>Unit</strong> (Vol-2A <strong>of</strong> 2) 34
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