Tender Document for Repowering Project of Ghorasal 3rd Unit - BPDB

RE-POWERING PROJECT OF GHORASAL 3 RD UNIT
TECHNICAL REQUIREMENTS
1.1 DESCRIPTION OF THE PROJECT:
Re-Powering of Ghorasal 3 rd Unit with inclusion of GTG and HRSG having configuration of
2:2:1 (Two GTG + Two HRSG + one existing STG) at Site conditions (35 0 C, 1.013 mbar,
98% R.H.) is intended to be set up by Bangladesh Power Development Board at
Ghorasal, Narsingdi, Bangladesh. Approx. 17 acres of land is allocated for implementation
of this project. Natural Gas will be used as fuel of this Power Plant.
The Gas turbine(s) shall be equipped with the bypass stacks and diverter dampers to
allow continuous and reliable simple cycle operation.
The proposed Plant will be installed in the land as Shown in the site layout. The Project
will be implemented on turnkey basis.
The Power Station step-up transformers would be connected with the 230 kV Power Plant
Sub-Station through underground cable and other necessary electrical equipment as
shown in the single line diagram.
Short-circuit and ground-fault current of Ghorasal 230 kV Grid Sub-station.
MVA BASE MVA 3-PHASE MVA PHASE-GND
........ 12123 13605
The following parameters are to be considered in plant design:
Sub-Tropical Monsoon.
Temperature: 5 0 C to 45 0 C.
Relative Humidity: 36% to 100%.
Annual Rain Fall: 120 cm to 345 cm.
Wind Velocity: 200 km/hr.
Seismic Horizontal ground Acceleration: 0.2 g.
Other parameters (e.g. soil & water to be analysed by the Tenderer at his
own cost) as per Tender Requirement.
The project may be classified into the following broad areas. Details are
however given later in the scope of work.
1. Survey preparation of drawing, land development, landscaping of the
proposed site.
2. The supply and construction of the Power plant equipment.
3. Equipping of 230 kV material/equipment at the Power Plant Sub-Station
as per single line diagram enclosed.
4. Supply and Construction of all civil work for a power station complete in
all respect.
5. Supply and construction of entire Gas Fuel system for the plant, fire
protection system etc.
Re-Powering Ghorasal 210 MW 3 rd Unit (Vol-2A of 2) 4