|
Although
Meghalaya has so far only developed hydro power, there
are considerable coal reserves in Garo Hills which can
produce 1000 MW or more of thermal power on a long term
basis. A mix of 30 % thermal and 70 % hydro by the year
2001 AD is considered desirable for ensuring a reliable
power system in the state. The MeSEB has a project
report ready for a 120 MW thermal power station to be
located at Nangalbibra with provisions for expansion to
240 MW. In order to achieve a better hydro thermal
balance and to save the state from having to purchase
expensive power from outside in the years of scanty
rainfall, the construction of a 120 MW thermal power
station at Nangalbibra has become a matter of urgency.
The
abstract of the project report is given below:
Location
Nangalbibra, South Garo Hills District, Meghalaya, 130
KM from Guwahati (Assam).
Installed
capacity The scheme
envisages installation of 4 x 30 MW turbo generator with
provision for expansion to 8 x 30 MW in future.
Fuel
Coal from West Darrangiri coal fields, 1.5 KM away from
the proposed power station.
Quality
of coal High calorific
value (6700 Kcal/Kg), low ash content (4.8 %) and high
sulphur (2.5 %). (vi) Dissolved solid: 53.00 ppm; (vii)
pH: 7.8 ppm.
Boilers
The boiler will be of natural circulation, dry bottom,
balance drag, non-reheated type employing direct fire
system and suitably designed for burning high calorific
value and low ash content coal with low ash fusion
temperature.
Steam
turbines The
turbines will be of single cylinder condensing type
operating at 3000 rpm coupled to an air cooled
uninundated land required for the power house is
available.
Heavy
machinery transportation
The project site is connected with Dudnai (Assam) by an
all weather metaled road. With minor modifications and
strengthening of the road and bridges, transportation of
machinery of up to 48 MT would be possible.
Proposed
site merits (a)
Proximity to coal and water with economic cost of
transportation of coal; (b) Availability of acquired
land; (c) Proximity to 132 KV grid sub-station; (d)
Proximity to the proposed A.C.C. 2500 TPD cement factory
at Siju, with 60 million units of annual power
requirement which is likely to increase with future
expansion of the cement factory.
Pollution
The project has been cleared by the National Committee
on Environmental Planning and Co-ordination of
Department of Science and Technology generator.
Land
availability
Non-agricultural and.
Climatic
conditions (a)
Maximum temperature - 36.80 C; (b) Minimum temperature -
8.70 C; (c) Average rainfall - 3360 mm
|
Brief Description of the
Thermal Project
