Untitled - Ministry of Power

100
capacity of 1000 MW (4X250MW). CEA has
cleared the Revised Cost Estimate amounting to
Rs. 6621.32 Cr. at March ,03 PL including IDC &
FC of Rs. 560 Cr. The CCEA approval to the
Revised Cost Estimate is under process.
STATUS OF THE PROJECT WORKS
The work on Tehri Stage-l is in advance stage of
completion. The present status of the Project is
as under:
i) Dam
The 260.5 m. high Earth & Rock Fill Dam,
which would be the highest Earth &Rockfill
Dam in the Asian Region and 4th highest in
the world is in progress. Out of the total
quantity of 256.67 Lac Cum, a quantity of
234.76 Lac. Cum. has been placed till
March’04. The Dam has been raised to an
average level of EL.838.30 m. Balance height
left to be raised is only 1.20 m.
ii) Spillways
The works at various fronts viz., Chute
Spillway, Right Bank Shaft Spillways and
Left Bank Shaft Spillways is progressing well.
The Open excavation for the entire spillways
has been completed. The concreting of
‘Approach Channel, Control Structure &
Spillway Chute has been completed. The
underground excavation of ILO, Gate Shaft
of lLO, T-1 & T-2 Shafts, Drainage Galleries
around Stilling Basin has also been
completed. The completion of ILO circuit viz.,
ILO, Gate Shaft, Shaft & Tunnel T-3, Stilling
basin required for commissioning of 1st unit
is in advance stage of completion.
The supply of Embedded parts of ILO Gates
and Liners have been completed and erection
is in advance stage of completion.
iii) Power House
a. Civil Works
The Civil Works of Power House Complex
have been completed except minor finishing
works. All works of Intake Structure have
been completed. Erection of steel liner and
concreting in Lower Horizontal, vertical and
lower bends of all the four vertical penstocks
have been completed. The concrete lining in
Tail Race Tunnels have also been
completed.
b) Supplies of E&M Equipment
Supplies of generating plant and
equipment from Russia/Ukraine, with
financing arrangements by way of
Suppliers Credit, are complete.
Computerised Control System supplies
from ABB, Germany, with financing
arrangements by way of Buyers Credit
from KfW, Germany, have also been
completed.
All the 4 Nos., 306 MVA Generator
Transformers, manufactured by M/s
BHEL, have been transported & placed
in the Transformer Bay.
The Supplies under ICB for 420 KV Gas
Insulated Switchgear and Busduct,
awarded to Siemens, Germany, with
financing under Buyers Credit from KfW,
Germany are complete. c) Erection of E&M
Equipment Assembly / Erection of Power
House Generating Plant and Equipment is
in progress. Assembly of Generator
Transformer accessories for unit-IV has been
completed and is in progress for balance
three units.
Unit-IV
Boxing of unit has been completed.
Erection of Unit Auxiliaries & Station
Auxiliaries have been completed.
Pre-Commissioning Tests is almost
complete.
Unit-III
The Erection of Spiral Casing, Pit Liner
and concreting of Generator Barrel Floor
upto EL. 605 m. has been completed.
Erection of Turbine Operating Mechanism
has been completed.
The Stator has been lowered in the Pit
and Winding/HV test has been completed.
Rotor has been lowered in the pit and
Erection of upper bracket completed. Final
unit alignment is in progress.
Boxing of unit is in advance stage of
completion.
Unit-II
Erection of Spiral Casing, Hydraulic Testing
and concreting of Generator Barrel Floor
upto EL. 605 M. has been completed.
Erection of Turbine Operating Mechanism
is in advance stage of completion.
Stator Core Assembly in Service Bay is
in progress.
Rotor Assembly in Service Bay is in
progress.
Unit-I
Erection of Draft Tube Cone, Stay Ring
and Spiral casing has been completed.