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www.hydroworld.com March-April 2014 HydroHydro ReviewReview WorldwideWorldwide Silt Solutions How One Indian Dam Owner Resolves Sediment Issues Media sponsor of 14 ICOLD PREVIEW: EXPLORE THE ISSUES SET FOR DISCUSSION IN BALI, INDONESIA 22 STOP LEAKS THROUGH DAMS: A SOLUTION FROM SWEDEN NEW! MARINE HYDROKINETICS 21-23 October, 2014, Sao Paulo, Brazil 28 1403HRW_C1 1 3/14/14 3:08 PM http://hrw.hotims.com RS #1 1403HRW_C2 2 3/14/14 3:08 PM MARCH-APRIL 2014 OPERATIONS & MAINTENANCE 8 Sediment Management for Rangit Dam in India By Siba Prasad Sen Changing the operational profle of the 60 MW Rangit Hydro Power Station in Sikkim resolved seasonal siltation issues while maximizing generation capacity for its owners. ARTICLES 14 Preview of the 82nd Annual ICOLD Meeting By Basuki Hadimuljono Dam design, construction, maintenance and hydroelectric genera- tion professionals can attend a series of seminars, hydro facility tours and a trade exhibition at the International Commission on Large Dams’ 82nd Annual Meeting in Bali, Indonesia. 18 Viewpoints from the Board Room: Black & Veatch 14 By Marla J. Barnes Steve Edwards — the new chairman, president and chief execu- tive offcer of global engineering, consulting and construction frm Black & Veatch — discusses what he sees coming in the future of the hydropower industry globally. 22 Ideas in Action: Dealing with Leakage through a Dam By Ola Hammarberg Excessive leakage through the Vojmsjon Dam in Sweden led the owner to consider a renovation. A steel pile cutoff wall with an interlock system was installed. Since this work was completed in May 2013, leakage through the dam has been cut in half. DEPARTMENTS 2 Viewpoint: 4 Briefngs 26 Small Hydro 32 Index to Selecting Sustainability Advertisers for Hydropower Designs 24 Tech Notes 28 Marine Hydrokinetics ADVISORY BOARD H. Irfan Aker Ian M. Cook Fernando de Menezes e Silva Leon Tromp Luis C. Vintimilla Dolsar Engineering ICCL, Itaipu Binacional Lesotho Highlands Water Consulting Engineer Limited, Turkey United Kingdom Brazil Commission Ecuador Lesotho Emmanuel Maryse Francois-Xausa Peter Thomas Mulvihill C.V.J. Varma James Yang, PhD Antwi-Darkwa Alstom Hydro France Pioneer Generation, Ltd. Council of Power Utilities and Vattenfall Research Volta River Authority France New Zealand The Dams Society India and Development AB Ghana Sweden Enrique Cifres Roger Gill Kanchit Ngamsanroaj Raghunath Gopal eWATER Consultant SL Sustena Partners Electricity Generating (R.G.) Vartak Spain Australia Authority of Thailand Consultant, India Thailand www.hydroworld.com March-April 2014 / HRW 1 1403HRW_REV_1 1 3/17/14 3:32 PM Viewpoint Selecting Sustainability for Hydropower Designs ® Vol. 22, No. 2, March-April 2014 The hydropower industry has expended tremendous effort to ensure that new proj- PennWell Global Energy Group The Water Tower, Gunpowder Mill, ects are developed with environmental and social sustainability in mind. Rightly so. Powermill Lane, Waltham Abbey, Essex, EN9 1BN, UK Sustainability lies at the heart of the design and development of hydropower today, and Telephone: +44 1992 656 600 Fax: +44 1992 656 700 this effort is widely recognized as a diffcult and on-going transition that is essential to E-mail: [email protected] World Wide Web: http://www.hydroworld.com the survival of the industry. PUBLISHER — Marla Barnes But sustainability should not just consider environmental and social impacts; true +1 918 832 9353 [email protected] sustainability should also mean that hydropower installations are designed and built for CHIEF EDITOR — David Appleyard +44 1992 656659 [email protected] the maximum possible operational lifespan. One of the fundamentals of hydropower is SENIOR EDITOR — Elizabeth Ingram that, once constructed, such a project can generate power for a century or even more +1 816 214 5629 [email protected] where electromechanical equipment is refurbished or replaced. However, there have ASSOCIATE EDITOR — Bethany Duarte +1 918 832 9330 [email protected] been a number of recent examples of projects that have apparently lasted far less time PRODUCTION MANAGER — Daniel Greene than their design life as a result of poor construction techniques, substandard materials +1 918 831 9401 [email protected] or the choice of a sub-optimal design. GRAPHIC DESIGNER — Kermit Mulkins +1 918 831 9554 [email protected] For example, changes made to the design of Zimbabwe’s Tokwe-Mukosi Dam more than a decade ago could have contributed to the displacement of thousands of families SUBSCRIBER CUSTOMER SERVICE PO Box 3264, Northbrook, IL 60065-3264, USA earlier this year after water began leaking through cracks in the dam’s walls. Local media Customer Service Phone: 1-847-763-9540 Fax: 847-763-9607 reports suggest a lower cost alternative dam design was chosen against engineering Email: [email protected] advice. Tragically, this development is far from unique, and there are numerous examples SALES MANAGER: EUROPE, ASIA, AFRICA, OCEANIA — Alasdair Evans of projects that require premature refurbishment or redesign, and this inevitably comes +44 1992 656636 [email protected] SALES DIRECTOR: AMERICAS — Howard Lutzk at a considerable cost to owners and operators. +1 913 402 7119 [email protected] Of course, it is not always the case that incentives are in place to maximize design REPRINTS — Rhonda Brown life, but it is essential that dam designers and project engineers do all they can to ensure +1 866 879 9144 [email protected] CORPORATE HEADQUARTERS — PennWell Corp. hydropower developments deliver the maximum possible volume of energy over their 1421 S. Sheridan Road, Tulsa, OK 74112, USA Telephone: +1 918 835 3161 life; to do anything less is a fundamental disservice to the industry. CHAIRMAN — Frank T. Lauinger PRESIDENT/CEO — Robert F. Biolchini CHIEF FINANCIAL OFFICER/SENIOR VICE PRESIDENT — Mark C. Wilmoth Using magazines to make the right decision AUDIENCE DEVELOPMENT MANAGER — Emily Martha Martin It seems that high-quality, concise and business-focused print or digital magazines are V.P. OF AUDIENCE DEVELOPMENT & MARKETING — June Griffn PRODUCTION DIRECTOR — Charlie Cole the top source of information for decision making in the global hydropower industry, The views expressed by contributing authors are those of the individuals according to a recent study into the demographic make-up of those working in the sector. concerned and do not necessarily refect those of HRW or the publishers. This study, by PennWell’s Hydro Group, is based on the readers of HRW-Hydro HRW (ISSN 1072-9542) is published six times in January, March, May, July, September, and November by PennWell Global Energy Group, The Water Tower, Gunpowder Mill, Powermill Lane, Waltham Abbey, Es- Review Worldwide and our sister publication Hydro Review, as well as those visiting sex, EN9 1BN, UK; phone +44 1992 656 600. Printed in the U.K. Ca- nadian GST Registration Number 12681 3153 RT0001. Canada Post HydroWorld.com or attending HydroVision events in the USA, Brazil, Russia and India. International Publications Mail Product (Canadian Distribution) Publi- cations Agreement No. 40029359. @Copyright 2014 by PennWell Corp. Based on these demographics, nearly 80% of those surveyed have more than 10 years (Registered in U.S. Patent Trademark Offce). No part of this periodical may be reproduced without the consent of the publisher. Authorization to of hydro industry-specifc experience and have major responsibilities across the spread photocopy items for internal or personal use, or the internal or personal use of specifc clients, is granted by HRW, ISSN 1072-9542, provided of hydropower projects and companies. that the appropriate fee is paid directly to Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923 USA 508-750-8400. Prior to It is also clear that the need for technical and industry information is high on the list of photocopying items for educational classroom use, please contact Copy- right Clearance Center, 222 Rosewood Drive, Danvers, MA 01923 USA 508-750-8400. Periodicals postage paid at Tulsa, OK and additional priorities, which along with reports on specifc topics are indicated as signifcant drivers mailing offces. Annual subscription rate: US$44 per year. Single cop- ies: US$20. Payments accepted in U.S. funds only. HRW is a subscriber by well over half of all respondents. to Business News Americas news services and incorporates their copy in its news columns. POSTMASTER: Send change of address, other circu- lation information to HRW, PO Box 3264, Northbrook, IL 60065-3264. “HRW” is a registered trademark of PennWell Corp. Return undeliver- able Canadian addresses to P.O. Box 122, Niagara Falls, ON L2E 6S4. Member: BPA International Printed in the U.K.. GST NO. 12681 3153 RT0001 Publications Mail Agreement No. 40029359 Chief Editor 2 HRW / March-April 2014 www.hydroworld.com 1403HRW_2 2 3/14/14 2:56 PM Harness the power from the water At Ingeteam each project is addressed from the concept of i+c, innovation to develop the best solutions and commitment to provide the best service. We provide comprehensive solutions for hydropower plant electrical and control systems, integrating proprietary technologies for automation, Control, Protection protection, regulation and synchronisation. and Regulation Systems Our independence, capability and experience in renewable energy Electrical Systems generating plants allows us to offer profitable solutions, with the highest Substations levels of availability, reliability and safety.