thermal power development - Infraline

Central electricity authority Annual Report 2009-10
6.12.6 Future vision for Life Extension /
R&M Programme
Coal based thermal power generation
provides a major share of power availability
in the country. About 70% (539.5 BU) of total
generation (771.5 BU) comes from coal / lignite
based power plants. At present, generation from
coal / lignite units of 200 / 210 MW and above
capacity contributes about 73% (469.5 BU) of
thermal generation (640.8 BU) and 60.85% of
total generation. The first 200 MW unit was
installed in Obra in 1977. Prior to that, the units
were of smaller size and many of these were
of non-reheat type with lower efficiency. Over
a period of past few decades, there has been
growth in the size of thermal units and in steam
parameters resulting in plant’s better efficiency.
So far, R&M activities were confined to
old, small size units to sustain their operation,
improve plant availability and extend their
operating life. However, such units are highly
inefficient and beset with various operational
problems. It is aimed to gradually decommission
such units.
Today, 200/210/250/300 MW and 500MW
coal/lignite units (69810 MW) consisting of
82.6% of coal/ lignite based installed capacity
of 84535 MW form the backbone of Indian
Power Sector. A large number of 200/210
MW machines and few 500MW machines are
in operation for 15-25 years or more. Such
machines through efficiency integrated R&M
provide a good opportunity for performance
enhancement through technology intensive
R&M. Plant specific energy audit studies and
techno-economic analysis are proposed to be
carried out for defining & implementation of
efficiency integrated R&M/LE schemes.
6.13 External Co-operation for R&M of
Thermal Power Station
World Bank and KfW-Germany have
committed to provide an aid of US$180 million
and Euro 90 million respectively for energy
efficient R&M at few identified thermal power
stations in India. Also METI (Ministry of
Economy, Trade and Industry) and MoP have
agreed to extend their cooperation in sharing
of technical expertise as well as in actual
implementation of mutually agreed technoeconomical
R&M solutions.
6.13.1 KfW assisted Programme
Under Energy Efficiency Programme,
KfW Development Bank, Germany has
provided a soft loan of Euro 90 million for the
implementation of energy efficient R&M at the
following thermal power plants:
i) Bokaro ‘B’ TPS, U-1, 2 & 3 (3x210MW) of
DVC.
ii) Kolaghat TPS, U-1, 2 & 3 (3x210MW) of
WBPDCL.
iii) Nasik TPS, U-3 (210MW) of
MahagEnco.
In addition to the above, KfW has provided
a grant of Euro 1.3 million for preparation of
Feasibility Reports/DPR to identify and finalize
the scope of works for R&M/LE for the above
seven units through a consultant. M/s Evonik
Energy services Pvt. Ltd, Essen, Germany has
been selected as consultant through ICB route
to prepare Feasibility Study / DPR for the
above seven units at three power stations. The
implementation of R&M/LE works based on
the Feasibility Report would be taken up by the
concerned utilities.
Present Status
a) Nasik TPS
The Feasibility Report has been submitted
by the M/s Evonik in Feb., 2010. Mahagenco
have requested to incorporate some additional
R&M works before finalization of the DPR.
b) Bokaro ‘B’ TPS
RLA, Steam Path Audit (SPA) and Energy
Audit completed. The reports have been sent
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