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Application
WORLD PUMPS
June 2018
Water & wastewater
Irrigation project aids Indian farmers R
ecent temperatures in Hyderabad, the capital of Telangana state in south-central India, hit record levels. Such extreme temperatures are now increasing in frequency, causing drought and despair for farmers in a region largely dependent on agriculture.
The problem is intensifying as periods of extremely high temperatures are now occurring annually. Worst hit are the states of Andhra Pradesh and Telangana in the southern part of the Indian subcontinent. In Andhra Pradesh, known as the ‘Rice Bowl of India’, 60% of the population live off the land but the high temperatures have created problems for irrigation and crops, hindering economic
development and resulting in 1.4 million farmers leaving the region in 2016.
Irrigation is key About 80% of India’s rainfall occurs from mid-June to mid-October during monsoon season, so efficient irrigation, which has a long tradition in India, is key. Two thirds of the agricultural land
The Srisailam Dam, Andhra Pradesh. (Image courtesy of shutterstock.com)
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depend on the monsoon or regular rainfall, but only one third has reliable irrigation to provide water for people, livestock and farming. As a result, the state government launched the Jala Yagnam project in 2004. Translated as sacred water, the Jala Yagnam project comprises a whole series of irrigation projects of different sizes
WORLD PUMPS
Application June 2018
and will ensure the irrigation of around 3.3 million hectares (8.2 million acres) of agricultural land.
Kaleshwaram project One of the largest sub-projects of Jala Yagnam, the Kaleshwaram project is designed to store approximately 4.7 trillion litres of water (169 TMC - one thousand million ft3) which will irrigate 736,345 hectares of agricultural land in Telangana. For this project, a dam is being built near the village of Kaleshwaram downstream of the point where the Pranahita flows into the Godavari River. The districts of Karimnagar, Medak, Nizamabad, Nalgonda, and Ranga Reddy are to be irrigated from there. The project comprises several pumping stations with reservoirs. The water is transported over a height of 500 m and a distance of 200 km. This is the first multi-stage lift irrigation project of this magnitude and complexity in India. It also contains the longest water transport tunnel in Asia, extending over a distance of 81 km and connecting the dam to a reservoir. An irrigation project of this magnitude is
These pumps have a Francis impeller of 3.5 m, a total weight of 130 t up to 200 t per pump, and an spiral outlet diameter of 5.5 m.
Andritz will manufacture 27 vertical volute pumps for three pumping stations, each with an efficiency of up to 90%.
the first of its kind, not just in India, but worldwide.
Infrastructure contracts In India, infrastructure developments like this are awarded turnkey as so-called
EPC (Engineering, Procurement, Construction) projects. The EPC contract partners are usually large Indian infrastructure companies. In this type of contract, the basic requirement is that key components are only supplied by qualified companies with a healthy balance sheet and good financial standing. In irrigation projects these are the pumps and motors. In the Kaleshwaram project, the Indian infrastructure company Megha Engineering & Infrastructures Ltd. (MEIL) is
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Application
WORLD PUMPS
June 2018
lower energy consumption when the pumps are started up if the guide vane mechanism is closed. In addition, a new hydraulic system with a particularly high specific speed of 400 NSQ and 600 NSQ (a measurement describing the ratio between flow rate, speed, and delivery head) was developed for the pumps in the first and second stations, taking account of the circumstances there. In addition, the weight of the impeller was optimised and the draft tube was downsized. Depending on the plant concerned, a single pump achieves heads between 25 and 107 m and handles a flow rate of 31.1 to 83m3 per second. The largest head achieved is 107 metres, which is approximately the height of the Cathedral Church of Milan, while the pumps with the highest flow rate of 83 m3 per second could completely fill the Cheops Pyramid in Cairo, Egypt, within eight hours.
Completion in 2018 Besides design and delivery of the pumps and spare parts for them, installation and commissioning work on site will also be supervised by Andritz personnel. Completion of the entire project is scheduled for June 2018. Great hopes are being pinned on the success of this infrastructure project. Harnessing sufficient water reserves for reliable irrigation of agricultural land will also bring about a longterm change for the better in the lives of farmers in India’s most populous state of Telangana. The pumps for the Kaleshwaram project are customised vertical volute pumps.
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www.andritz.com acting as EPC contract partner. Based on a joint overall solution for turnkey delivery of the key components, the pumps and motors, ANDRITZ and its long-standing partner ABB were awarded the contract. While ABB Finland is supplying the motors, Andritz will manufacture 27 vertical volute pumps for three pumping stations.
sub-projects. These include delivery of three vertical volute pumps for the Bheema project to irrigate 820 km2 (203,000 acres) of land and five volute pumps for the Kalwakurthy pumping station with a total flow rate of 115 m3 per second.
Guide vane mechanism ANDRITZ portfolio International technology group Andritz supplies plants, equipment, and services for hydropower stations. This portfolio also includes high-quality large and standard pumps used in infrastructure projects for irrigation, desalination, and drinking water supplies. The Andritz Group’s Pumps division is supporting the Jala Yagnam infrastructure project in a total of eleven www.worldpumps.com
The pumps for the Kaleshwaram project are customised vertical volute pumps, each with an efficiency of up to 90%. The special feature of these pumps is that they are similar to turbines because of their size and integrated guide vane mechanism. The guide vane mechanism is adjusted by means of a hydraulic servomotor to suit the changing water level. This can achieve a large increase in efficiency compared to normal pumps and
Contact ANDRITZ GROUP Michael Buchbauer Group Treasury, Corporate Communications & Investor Relations
[email protected] ANDRITZ GROUP ANDRITZ is a globally leading supplier of plants, equipment, and services for hydropower stations, the pulp and paper industry, the metalworking and steel industries, and for solid/liquid separation in the municipal and industrial sectors as well as for animal feed and biomass pelleting. Other important business segments include automation and service business. In addition, the international Group is also active in the power generating sector (steam boiler plants, biomass boilers, recovery boilers, and gasification plants) and in environmental technology (flue gas cleaning plants) and offers equipment for the production of nonwovens, dissolving pulp, and panelboard as well as recycling plants. The publicly listed technology Group is headquartered in Graz, Austria, and has a staff of approximately 25,200 employees. ANDRITZ operates more than 250 sites in over 40 countries. Website: www.andritz.com/pumps