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

. Exhaust silencing.
c. Transition piece from exhaust plenum to exhaust ducting.
d. Exhaust stack [as per environmental protection requirement but not
less than 50 m for GT with bypass damper and 50 m for HRSG].
e. Hydraulic operated/controlled diverter damper
f. Motor operated Guillotine damper
g. Thermal insulation and lagging.
h. The GT and HRSG Stacks shall be equipped with automatic
Navigation lighting system
Exhaust system shall be designed to enable the Combined Cycle Power Plant to
run as Simple Cycle mode and Combined Cycle mode as well.
6. Control Compartment (for GT)
2.3 Mechanical System
a. Outdoor enclosure.
b. Turbine control panel.
c. Generator control panel and protection panel.
d. Motor control centre.
e. Heating and air conditioning system.
a. Piping between the on-base equipment and the off-base equipment.
b. Painting, including finished coat and special paints required for corrosion protection
and high temperature resistance.
c. Design, operation and maintenance manuals, including drawings.
d. All other work necessary for the proper operation and maintenance of the gas
turbine generating plant.
e. Lubrication oil for flushing and for the initial filling.
f. All lubricant and chemical additives.
g. Natural gas handling facilities including gas metering and pressure regulating
station.
h. Overhead crane of proper capacity for heaviest piece of GTG & STG units.
i. Closed Cycle cooling water and Circulating water system
2.4 Electrical System
a. One (1) lot : 6.6 KV switchgear.
b. One (1) lot : 400 V power centre.
c. One (1) lot : 400 V common motor control centre.
d. One (1) lot : 400 V unit motor control centre .
e. One (1) lot : 15.75 kv and 6.6 kv XLPE power cables.
f. One (1) lot : Low voltage power cables.
g. One (1) lot : Control and instrument cables.
h. One (1) lot : Race way materials.
i. One (1) lot : Grounding system.
k. One (1) lot : 15.75 kV IPB
2.5 Heat Recovery Steam Generator
One (1) heat recovery steam generators of triple pressure (IP, LP, HP) steam cycle
suitable to utilise exhaust gas from the gas turbine unit including followings.
a. The steam drum and heat transfer sections which consist of the Economiser,
Re-Powering Ghorasal 210 MW 3 rd Unit (Vol-2A of 2) 12