Nagpur: With the object of enhancement of power-generation capacity of Koradi Thermal Power Station (KPTS) the MAHAGENCO has decided to renovate all old units with effect from August 1, 2015. The old units have been over used for 45 years beyond their power generation life of 35 years, and so all need immediate replacement/ renovation. In the first phase of renovation, the Unit No. 6 will be shut down from Aug 1, and its renovation work will be started.
The renovation will be done by Bharat Heavy Electricals Limited (BHEL) which has entered into a contract with MAHAGENCO. It may be mentioned that it is the BHEL that provides power generation units and also installs them in the power house. The contract of renovation has been given jointly to BHEL, M/s TechPro Chennai and Tata Consultancy Engineers, Bangaluru and M/s ABB Bangaluru, and the time frame is 8 months.
The Unit-6 once had the power generation capacity of 200 MW, which has gone down to 85-90 MW, putting Mahagenco into financial loss. It is believed that the renovated Unit-6 will generate 228 MW electricity. After successful experiments other units will also be renovated. The expenditure on renovation all units is estimated to about Rs 500 crore. At the behest of the Government of India, the World Bank will provide Rs 360 crore and remaining will be contributed by Mahagenco. The renovation work will take care of boilers, generator, ESP and cooling tower, etc.
It may mentioned that when Koradi power house was being set up, as many as 7 units for 1100 MW power generation were installed during 1972 to 1980. Units 1 to 4 were of 120 MW while Unit-5 was of 500 MW, Units 6 and 7 were of 210 MW. Four units are shut down since year 2010, and only 3 units are running, of whom Unit-6 will be shut down from Aug 1.
Pollution of air by ash emitted by chimney will be controlled and brought down to 70 mg per cubic metre from current 360 mg per cubic metre. The life of power generation will increase by 20 years, consumption of coal and oil will be minimized to 10%.
Rajeev Ranjan Kushwaha (firstname.lastname@example.org)