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Hydrodemolition on the Guri Dam in Venezuela

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Hydrodemolition on the Guri Dam in Venezuela December 2011 Hydrodemolition on the Guri Dam in Venezuela Steel gates on top of the Guri Dam control overflow from the reservoir down the three On the inside spillway channels, which have a combined flow Precision Waterjet Concepts Installs Waterjet Cutting System .......pg. 4 capacity of 27,000 m3/s. Swedish Prime Minister Fredrik Reinfeldt Visits TST Sweden ......pg. 4 Photograph courtesy of Conjet AB. High Pressure Equipment Company Launches New Website ........pg. 8 See Article on page 2 Peinemann’s 2 LTC Now Available on a Lightweight Vertical Setup .............................................................................pg. 10 Hydrodemolition on the Guri Dam in Venezuela he 10,235 MW the environment have combined to erode the surface T capacity Guri with caving and loosening of the concrete. Hydroelectric Power Station in Fapco proposed Venezuela is one of the hydrodemolition the world’s largest technique of using high hydroelectric power pressure waterjetting generation schemes. to selectively remove Officially known only the weakened and as Central Hidroeléctrica Simón Bolívar, it was built damaged sections of in the state of Bolívar to dam the River Caroni across the concrete spillway, the Necuima Canyon, about 100 km upstream with its and leave a very rough confluence with the River Orinoco, one of the longest surface for bonding rivers in South America. The scheme’s 20 turbines, on the fresh concrete. equally split in two separate powerhouses, have an Pneumatic breakers annual generating capacity of 47,000 GWh and account would leave fractures for around 70% of Venezuela’s power requirements. and micro cracking in the The Conjet Robot was undamaged concrete left operated from a platform Guri went on stream in 1978, but the original 2,935 in place. Fapco worked specially designed and made MW power station was expanded in 1986 to its current closely with Conjet AB, by Fapco to cater to the capacity, creating a reservoir covering 4,250 km2. The a leading manufacturer geometry and slope of the height of the combined concrete gravity and earth of hydrodemolition spillway channels, which embankment dam was raised to 162 m and crest length equipment, and the have an average slope of 51°. increased to 7,426 m. Steel gates on top of the concrete (continued on page 14) section of the dam control overflow from the reservoir down three huge adjacent spillway channels, which have a combined flow capacity of 27,000 3m /s. Your Ultra High Pressure Source • Hose working pressures up to 46,000 psi • Gun hose, supply hose and flex lances The Conjet 364 Robot was bought by Fapco • Complete range of specifically for repairing the spillways as the NPT, medium and high hydrodemolition technique produces a very rough pressure adapters surface for bonding on the fresh concrete. and fittings • Needle, ball and check The surfaces on parts of the spillway needed repairing valves up to 60,000 psi and the Venezuelan government’s power station owner working pressure and operator, Corporación Eléctrica Nacional, awarded a Outstanding Quality . contract for the spillway renovation to the local general Outstanding Service and civil engineering contractor Fapco C.A. based in Puerto Ordaz, Bolívar. The dam spillways have been Contact your SPIR STAR representative for more information. 10002 Sam Houston Center Drive • Houston, TX 77064 Phone: 281.664.7800 • Fax: 281.664.7850 in operation for over 30 years and the force of the fast Toll Free: 800.890.7827 • Fax: 888.893.1255 flowing water and continuous exposure to the sun and Web: www.spirstar.com • ISO 9001:2008 Certified © SPIR STAR 2011 Page 2 WJTA-IMCA on the web: www.wjta.org December 2011 New Sewer Jetting Resources Striving to Help Contractors Be More Productive New WARTHOG ® Web Site! sewernozzles.com • Improved Look & Layout • Expanded Video Vault • More Interactive Features • Dealer Contacts Worldwide Easily locate • Operator Manuals any of our • Maintenance Tips & Kits dealers worldwide. CA 2012 T ALO XLOOKING FOR A DEALER? #NN9CTVJQIUŠCTGUQNFVJTQWIJ5VQPG#IGsCWVJQTK\GFFGCNGTUQPN[ G )QVQYYYUGYGTPQ\\NGUEQOFGCNGTUCPFEJQQUG[QWT5VCVGQT%QWPVT[ VQſPFCFGCNGTPGCT[QW UNITED STATES UäIowa UäNorth Carolina INTERNATIONAL UäAlabama UäKansas UäOhio UäAfrica UäArizona UäKentucky UäOklahoma UäAustrailia THE INDUSTRY’S MOST UäArkansas UäLouisiana UäOregon UäCanada UäCalifornia UäMaryland UäPennsylvania UäChina UäColorado UäMass UäSouth Carolina UäDenmark POWERFUL AND UäConnecticut UäMichigan UäTexas UäFrance UäDelaware UäMinnesota UäUtah UäItaly UäFlorida UäMississippi UäVirginia UäNetherlands DURABLE TOOLS UäGeorgia UäMissouri UäWashington UäNew Zealand UäIdaho UäNebraska UäWisconsin UäUnited Kingdom UäIllinois UäNew Jersey UäIndiana UäNew York ® NEW WT™ WU™ WV™ New WARTHOG Catalog! • New Maximum Puller Model • New High-Speed Technology NEW Scan this QR code WGP-1™ WD™ WH™ WS™ • Tool Specications Š with your smart phone s 97 ) • Jetting Charts for an instant link MAXIMUM s HQTŒŒ5GYGT.KPGU to our new web site PULLINGPOWER 46*1) • Part Diagrams Proudly Manufactured Tools that WORK. # 46*1 6JGNEW9#46*1)9)2Š 9 Tools that LAST. 9KVJWRVQ40% MORE and the new catalog! HQTYCTFVJTWUV • Service & Overhaul Kits WWW.SEWERNOZZLES.COM in the United States 10KBP01012011 0'9 #2QYGTHWN0GY9# Proudly Manufactured in the United States Call 1-866-795-1586 or Click on www.sewernozzles.com for a Distributor Near You Precision Waterjet Concepts Installs Waterjet Cutting System recision Waterjet Concepts Quaal attributes his company’s P Inc. has installed a success to an overall increase in Jet Edge Mid Rail Gantry awareness about waterjet technology waterjet cutting system at its as well as to his company’s full-service 5-axis and 2-axis commitment to quality and its full- waterjet cutting facility in service solutions approach that Northern Minnesota. The Mid includes CNC programming, intricate Rail Gantry is the company’s 3D cutting, high-volume 2D cutting, second Jet Edge system. They CMM inspection, final machining and also have two 5-axis waterjets. welding. The company even machines its own 5-axis fixtures on a vertical With their new system, machining center to ensure parts are Precision Waterjet Concepts Mirror cutting a 12 ft. x 7 ft. 2-in. AR 500 plate.) cut to customer specification. can now cut large parts twice as fast thanks to the system’s dual Precision Waterjet Concepts abrasivejet cutting heads with originally started as a 5-axis only mirroring capabilities. Powered shop, but added its first Jet Edge by a 60KSI, 150hp Jet Edge system in 2006 after determining that iP60-150 waterjet intensifier many customers also needed high- pump, the Mid Rail Gantry is volume parts cutting services that were capable of processing materials impractical on a 5-axis system. up to 8 ft. x 13 ft. The system complements the company’s “We chose Jet Edge for our 2-axis existing 5-axis waterjets which systems because they are easier to process materials up to 144 run and maintain than the competitor in. x 96 in. x 36 in., and its systems that we looked at, plus workhorse Jet Edge High Rail 2d cutting the profile of a 2-in. thick plate and Gantry System which features etching the layout for the welder. (continued on page 6) four abrasivejet cutting heads for high-volume cutting of materials up to 9 ft. x 13 ft. The High Rail Gantry also is powered by a Jet Edge iP60-150 pump. Swedish Prime Minister Fredrik Reinfeldt Visits TST Sweden An ISO9001:2008-certified company, Precision Waterjet Concepts serves a n October 14, 2011, Swedish wide variety of customers nationwide O Prime Minister Fredrik Reinfeldt and cuts virtually any material, visited TST Sweden AB, a WJTA-IMCA specializing in abrasion resistant (AR) corporate member who manufactures plating and titanium. protective clothing for operators working with hydrodemolition and waterblasting Precision Waterjet Concepts has at ultra high pressures. TST Sweden is grown an average of 20-30% each year based in the heart of Sweden’s textile since opening in 2002 and has had to area in the town of Kinna in the province relocate three times to accommodate of Västra Götaland. its growth, says Joe Quaal, company president. In 2008, the company built For more information, call +46 320 20 Swedish Prime Minister a state-of-the-art 19,000 square foot 5880, email [email protected] or visit www.tst-sweden.com. Fredrik Reinfeldt tries on a headquarters in Pequot Lakes, MN, cooling vest. designing it especially for the waterjet Photograph courtesy of TST Sweden AB. cutting process and for future growth. Page 4 WJTA-IMCA on the web: www.wjta.org December 2011 Precision Waterjet Concepts Installs Waterjet Cutting System, from page 4 we were looking for a manufacturer Introducing BART – in Minnesota The Barton Abrasive that could get someone in here Removal Tool quick if there BART is the rst truly convenient, was a problem,” cost-effective and totally portable Quaal says. “We abrasive removal system available went with a Mid Joe Quaal, to the waterjet industry. The BART Rail Gantry president of system achieves removal rates for our second Precision Waterjet of over 2000 lbs./hr. system because Concepts. US and Foreign Patents Pending. of the mirroring system and programmable head • Simple spacing. We cut a lot of extremely • Convenient large parts and we can save a lot • Effective of time and money by mirroring. See a demo video at Fifty percent of the time, we are www.barton.com/BART mirroring. The programmable head spacing also saves us 10-15 minutes Barton per job on set up time.” USA/Canada 800.741.7756 Phone 518.798.5462 Fax 518.798.5728 Quaal noted that Jet Edge’s [email protected] mirroring system holds much tighter tolerances than competitor systems that he had considered. “When we bought the second system, I got quotes from four companies and visited them all,” he says. “The Jet Edge’s tolerance was impressive.
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