NTPC BARH

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Sachin Singh on October 20, 2009

Around 3,300MW of coal-generated power is being added at Barh near Patna in Bihar, India. The three-unit 1,980MW Barh I is being built by Russian Power Machines Group, and the two-unit 1,320MW Barh II extension by BHEL. Barh has been named a mega power project, and is owned by Indian energy company NTPC (National Thermal Power Corporation).

The foundation stone for Barh I was laid in 1999 but there was at the time doubt about whether the project would ever reach completion, since the Bihar Government was finding it difficult to make land available. Unit 1 is now planned to start operation in October 2009.

"Including Barh, NTPC aims to add over 10GW in new coal-fired plants by 2012."Barh II was announced in 2006 and is expected to be complete by 2010; NTPC had earlier announced capacity enhancement for 2007–2012 from 11,558MW to 17,333MW, which included Barh II. Barh I cost around Rs.19,000 crore. The power will go mostly to North, West and East India. Six 400KV electrical substations link Barh to Kahalgaon, Sasaram and Biharsharif.

BARH NAMED MEGA POWER PROJECT

India's economic growth has put strains on its power supply capacity. NTPC was formed in 1975 to accelerate power development of the country, with the Government of India holding almost 90% of the company's total equity shares.

Including Barh, NTPC aims to add over 10GW in new coal-fired plants by 2012. India's Central Electricity Authority (CEA) cleared Barh I in 2001. The project was financed through domestic and external commercial borrowings, with equity from internal resources of NTPC.

As one of India's mega power projects, Barh is eligible for benefits like import of capital equipment free of customs duty, and price preference of 15% for domestic public sector undertakings (PSUs).

SUPER CRITICAL STEAM GENERATION

The plant uses super-critical steam generation, with water instantly being converted into steam without passing through the boiling phase. Operating pressures are around 250 atmospheres.

The annual coal requirement for Barh is estimated at around 15 million tonnes per annum, met from the Amrapali block of North Karanpura coal fields. NTPC transports coal by rail from North Karanpura to Barh.

BHEL WINS SECOND BARH BOILER CONTRACT

For Barh I, NTPC awarded the contract to Russia-based power equipment supplier, Technopromexport, as part of the Power Machines Group. The group designed, manufactured, supplied, erected and commissioned the three power units for the turbine island. Equipment for each power unit was manufactured at Leningradsky Metallichesky Zavod (steam turbines), Electrosila (turbogenerators) and Kaluga Turbine Works (feedwater turbine-driven pumps).

The KSB Group produced 18 pump sets consisting of nine turbine- or electric-driven boiler feed pumps and nine condensate pumps. The biggest pump sets have a drive rating of 18,000kW each and generate a discharge pressure of 320bar. The machines are being delivered in three shipments starting from April 2007.

Yokogawa India Limited supplied the turnkey automation and control system for the boilers and associated equipment of three power generators. These include the CENTUM CS 3000 R3 Distributed Control System, PRM Plant Resource Manager, DPharp EJA Pressure/Differential Pressure Transmitters and IR8A Infrared Gas Analysers.

The Indian state-run Bharat Heavy Electricals Ltd (BHEL) won the contract for boilers for Barh II, partnering with Alstom and Siemens. Ansaldo Coldaie had also wanted to bid for the Barh II contract, but reportedly could not meet key technical conditions.

"The annual coal requirement for Barh is estimated at around 15 million tonnes per annum."ENVIRONMENT CONCERNS IN BIHAR

Wildlife Week reported complaints that Barh would impact the Taal wetlands, which are extremely rich in avifauna. The Barh project was cleared by the Ministry of Environment and Forests (MoEF) in 2001.

Ornithologists have, however, counted 149 species of resident and migratory water birds in the wetlands, which is an important bird breeding site.

The area is close to the Important Bird Area (IBA) of Kanwar Lake Bird Sanctuary. Wildlife Week accused the MoEF of hurriedly pushed the project through, without heeding high-level advice that a bio-habitat analysis be first conducted as the existing environmental impact assessment was inadequate.

azadavinash on January 2, 2012

We all civilians of Barh city are having proud on NTPC.This must be a reason to develop the Barh city.Due to this NTPC the synario of the ciyt must be changed in a right way what we need. I would like to thank to Bihar government & congratulations to all people of Barh.

      AVINASH AZAD.......

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Photo details

  • Uploaded on October 20, 2009
  • © All Rights Reserved
    by Sachin Singh
    • Camera: EASTMAN KODAK COMPANY KODAK EASYSHARE M883 ZOOM DIGITAL CAMERA
    • Taken on 2009/03/15 11:12:40
    • Exposure: 0.001s (1/1000)
    • Focal Length: 10.30mm
    • F/Stop: f/5.900
    • ISO Speed: ISO64
    • Exposure Bias: 0.00 EV
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