Untitled - Ministry of Power

unit #3 of BTPS ‘B’ have been installed.
Installation of additional ESPs in balance units
of BTPS‘B’ unit #1&2 are in advanced stage.
Further, in order to reduce emission level in all
210 MW units, it has been planned to introduce
Ammonia Condition System. At the initial phase,
the system will be implemented in one unit each
at MTPS and BTPS‘B’ and will progressively be
implemented in other 210 MW units of DVC,
subject to its satisfactory performance and fruitful
results.
Beside Stack emission, effluents from the plants
are also monitored and reported to the respective
Pollution Control Boards on regular basis. With
a view to arrest suspended solids of plant drains,
action has been initiated for construction of two
surge ponds at CTPS and one surge pond at
BTPS ‘B’. The Effluent Treatment Plant at MTPS
is nearing completion.
As regards solid waste management, ash from
the thermal plants is being discharged in slurry
form in ash ponds and evacuated from the ponds
at Bokaro, Chandrapura and Durgapur to the
abandoned coal mines of CCL, BCCL and ECL
respectively. For utilization of generated fly ash
from MTPS, a MOU has been signed with M/s
Lafarge India Ltd. for setting up of a fly ash
based cement plant of 1 MTA capacity.
RENOVATION & MODERNISATION
DVC undertook number of R&M Projects under
Phase-I (7th Plan), Phase-II (8th Plan) and Phase-
III (9th Plan) Schemes. All projects taken up in
Phase-I and Phase-II have been completed
except one transferred to Phase-III Scheme.
While most of the projects under Phase-III
Schemes are completed, a few of the balance
projects are in different stages of completion.
All the above plan activities were taken up in
piecemeal manner. Although there was
improvement in respective areas but improvement
in overall performance of the plants upto the
desired level could not be achieved.
In line with thrust given by Government of India
on R&M with Life Extension (LE) of old power
generating units in 10th Plan, DVC planned for
comprehensive R&M/LE of all its old thermal
and hydel units based on Residual Life
Assessment (RLA) studies, to be started during
10th plan for completion in 11th plan period. The
details are indicated below.
THERMAL UNITS
10 old units of vintages ranging from 51 to
25 years viz. BTPS ‘A’ Units # I to III, DTPS
Unit # III and CTPS Units # I to VI have
been taken up for RLA based comprehensive
R&M/LE. NTPC has been engaged as
consultant for the project.
RLA studies of four units namely CTPS Unit
# II & IV, DTPS Unit # III and BTPS ‘A’ Unit
# III are completed. RLA/CA study for CTPS
Unit # I & III, based on specifications
received from NTPC on 09.02.2004, is under
process of tendering.
On review of DPR and Techno-economic
Feasibility Report, CEA advised to restrict the
overall R&M cost per MW to Rs.1.20 crores.
Considering the high R&M cost of NTPC’s
proposal and advice of CEA to restrict the
overall DVC prepared a shelf of proposal for
R&M of these units based on the revised
scope of work and submitted the same to
CEA & NTPC. After a joint review meeting
among CEA, NTPC & DVC on the R&M
proposals, CEA vide letter dt. 07.01.04 &
23.01.04 recommended –
1 To carry out the initial activities like
installation of new ESPs, overhauling, etc.
for revival of BTPS ‘A’ units I, II & III and
to conduct PET for formulating the R&M
activities to be taken up subsequently.
The estimated cost for revival is Rs.50
crores.
2 To proceed ahead for R&M of CTPS
Units # I,II&III and DTPS Unit # III.
Proposal of tendering for installation of new
ESP and revival of BTPS ‘A’ Units I, II & III is
under process. Consent to operate the units
for trial run is expected from JSPCB shortly.
Draft Technical Specification for R&M/ LE of
DTPS Unit # III has been received from NTPC
on 19.02.04. Final Specification/ Bid document
for R&M/ LE of CTPS Units # I, II & III is
awaited from NTPC. Tendering Proposal for
R&M of DTPS Unit # III and CTPS Units # I,
II & III has been initiated.
Regarding R&M/ LE of CTPS Units # IV, V &
VI, it has been decided in a joint meeting of
CEA, DVC, NTPC & BHEL on 26.02.04 that
BHEL would check the feasibility of conversion
of front firing to tangential/corner firing in the
boilers with a view to reduce high oil
consumption using low V.M. Coal. BHEL
experts have not visited Chandrapura site, as
committed. CEA has been requested to
expedite the matter with BHEL.
HYDEL UNITS
4 old units viz. 3 units of Maithon Hydel
Station and 1 unit of Panchet Hydel Station,
of vintages ranging from 47 years, have been
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