[attachment=9682]
Gas Plant
(NATIONAL THERMAL POWER CORPORATION)
Albert Einstein said “We owe a lot to the Indians, who taught us how to count, without which no worth while scientific discovery could have been made. From counting to launching satellites, to making supercomputers India has done it all. Maintaining the same zeal in the power sector are various power companies, the most prominent among which is NTPC. The National Thermal Power Corporation was established in 1975 to play a major in the Indian power sector. Today with an installed capacity of 18,351MW the corporation is looking ahead with an ambitious corporate plan to achieve a capacity of 30,000MW by year 2007 and 40,000MW by year 2012. Operating 13 coal based and 7 gas based stations, NTPC with its share of about 19% of India’s total capacity generates 24.4% of the country’s power.
A consistent high level performer in operations NTPC provides the benchmark for the Indian power sector. Inspired by a glorious past and brilliant present, NTPC is heading towards a brighter tomorrow. Every milestone achieved is a dream come true for its 23,000 dedicated employees working in its plants across the country.
BREAKING NEW GROUNDS
As part of the corporate growth strategy, NTPC is diversifying into hydel and non conventional energy development. As part of this plan NTPC and ABB Alston have launched their 50:50 joint ventures. The company will seek business for renovation and modernization of power plants. Also NTPC is presently in the process of tying up LNG supplies for the expansion of its gas based station.
FINANCIAL MILE STONES
The corporation achieved a net turn over Rs 16479.24 crore. The provisional profit, after tax, rose to Rs 3401.96 crore registering an improvement 20.81% over the previous year profit of Rs. 2815.73 crore. In the Asiaweeks ranking of the top 1000 companies of Asia-Pacific region, NTPC has improved its ranking to 299 from the previous year ranking of 344 in terms of sales volume.
LEADING THE RACE
During 1998-99, the corporation an all time high of 109.5 billion units of electricity at a plant load factor of 76.6% and availability of 89.36%. With the expertise gained over the years in power station management, NTPC has successfully revived three sick coal based power stations namely Badarpur (705MW), Unchahar (420MW) and now 840MW and Talcher thermal (460MW).
GENERATING GREEN POWER
The corporation has been identified as implementing agency for “Green House Gas Emission Prevention Project” by the USDOE and USAID. NTPC has set up a “Centre for Power Efficiency and Environmental Protection” (CENPEEP) which functions as a resource centre for development and dissemination of latest technologies. For the 12th consecutive year, NTPC achieved all the targets set for it under the memorandum of understanding with the Government of India and was rated excellent.
• Engineering and Operation services awarded ISO9001
• Contracts Division accredited with ISO9002
• Vindhyanchal, Korba, Rihand, Kawas, Gandhar stations awarded ISO9002
• Dadri station accredited with ISO14001
NTPC-DADRI
(An ISO 14001 & 9002 Certified Station)
NTPC Dadri was set up in the central sector in the year 1975 in response to widening demand and supply gap with the main objective of planning, promoting & organizing an integrated development of thermal power in India .Ever since its inception, NTPC has never looked back and the corporation is treading steps of success one after the other. The only PSU to have achieved excellent rating in respect of MoU targets signed with the Government of India each year.
NTPC is poised to become a 40000 MW giant corporation by the end of 11th plan i.e. 2012 AD. Lighting up one fourth of the nation, NTPC has installed capacity of 19291 MW from it’s 13 coal based stations and 7 gas based stations as on 31:03:2000 with it’s commitment to provide quality power, all the operating stations of NTPC located in the national capital region & western region have acquired ISO 9002 certification . The service groups like Engineering, contracts, Materials and operation services have also bagged the ISO 9001 certification. NTPC Dadri, Ramagundam, Vindhyachal and Korba stations have also bagged ISO 14001 certification.
STATION AT A GLANCE
NTPC Dadri is the modal project of NTPC. It is situated 60 km away from Delhi in the Gautam Budh Nagar district, Uttar Pradesh. The station has an installed capacity of 1669MW of power-840 MW from coal based units and 829 MW from gas based units. The station is excelling in performance ever since it’s commercial operation. Consistently in receipt of meritorious productivity awards, the coal based units of the station stood first in the country in terms of PLF for the financial year 1999-2000 by generating an all time national high PLF of 96.12%. With the most modern O& M practices, NTPC Dadri is committed to generate clean and green power.
The power station also houses the first HVDC station to the country (now under the control of PGCIL) with a power handling capacity of 1500 MW. Towards sustainable development and Eco friendly power generation, the station has taken up task under the green house gas pollution prevention project (GEP project) in association with the centre for power efficiency and environmental protection CENPEEP-NTPC & USAID. The station has bagged ISO 14001 &ISO9002 certification during the same financial year 1999-2000, certified by agency of international repute M/s DNV Germany respectively.
COAL TRANSPORTATION AND HANDLING SYSTEM
NTPC Dadri is a rail fed power station and the coal supply is linked with Piparwar block of north Karanpura coal fields Ltd in Bihar state, located 1200 Km away from the power station from Dadri railway station. The coal rakes are brought to NTPS siding and unloading points through railway track which is totally electrified and constructed by NTPC Dadri. The station has facility for receiving coal through BOBR rakes at wagon tippler. There are two streams in CHP, each having a capacity of 1400 MT/hour. As the station is a rail fed station it is expected to maintain a coal stock of approximately One month. The stock yard has a capacity of 5 lacs MT and coal can be stored /retrieved through a Stacker Reclaimer. From track hopper or stock yard, coal is fed into coal bunkers through conveyors after being crushed to a size of less than 20 mm. Since April 1997, the station has also starting receiving washed coal from washery set up at Piperwar in Bihar. Effective dust suppression and dust extraction systems are installed to minimise the fugitive dust emission during the unloading and handling of coal.
POWER EVACUATION
Dadri switchyard is the largest switchyard in country, in terms of power evacuating capacity. With a power handling capacity of 4500 MW, it is the most critical switchyard in the northern grid. The generating voltages of coal and gas units are stepped up to 220 KV by the respective generator transformers are connected to separate 220 KV switchyard. Further both the stations are connected to the same 400 KV switchyard through separate two banks each of 500 MVA interconnecting transformers of 400/220 KV.
The system has also connected to 500 KV Rihand – Dadri HVDC terminal for evacuation of 1500 MW power. The Inter state 400 KV lines emanating from Dadri switchyard are Malerkotla (Punjab), Muradnagar (UP), Ballabgarh (Haryana),Mandola(DELHI) and Panipat (BBMB system). Through the Mandola double circuit lines, Dadri 400 KV switchyard feeds up to 1500 MW to the Delhi system .On the preventive maintenance front for the first time in the country, the practice of periodical Hotline water washing is adopted, both for 220 KV 400 KV bays.
ENERGY CONSERVATION
In NTPC a full fledged Energy Conservation group is dedicated to the mission of conserving energy. he focus is on Optimising auxiliary power consumption, reducing consumption of fuel oil and lub oil, reducing specific coal consumption by improving heat rate, reducing DM water consumption and stopping wastage of which can be put to use. NCPS is vigorously pursuing the promotion of non conventional sources of energy. Three numbers 500 LPD solar water heaters are installed at guest house and plant canteen. Solar photo voltaic street light system and six solar photo voltaic traffic warning lights have been installed and are functional at NCPS. Further on anvil is the installation of the street light system in other areas along with installation of solar photo voltaic water pumping system in the plant area for horticulture purposes.
ASH HANDLING SYSTEM
Station is first in the country to adopt Dry ash handling system, handling about 1.5 million tons of ash per annum. The system is highly eco friendly and redresses all the negative environmental effects Fly ash and Bottom ash is handled separately and taken to ash mount on conveyors from respective storage bins. The construction of ash mount is unique. The mount shell caters to the storage of ash for the entire plant life and would be constructed to a final height of 55 meters with 140 acres as the top surface area. Ash mount construction requires only 1/3rd land requirement and extremely low water requirement of 2% in comparison to the conventional wet ash disposal system. Nature is recreated on the finished mount slopes by extensive turfing, tree plantation etc. Finished mount slopes can be commercially exploited to generate revenue