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HRSGHeat Recovery SteamGenerators bound for SingaporeVogt Power International Inc., a unit of Babcock Power Inc., has received an order fromSiemens AG to supply HRSGs for the gas-fired, combined cycle GMR Energy Power Plantproject in Singapore. Vogt Power will deliver two unfired, three-pressure level HRSGs.The Vogt Power International Inc.located in Louisville, KY, a subsidiaryof Babcock Power Inc.,based in Danvers, MA, has received anorder from Siemens AG. to supply HeatRecovery Steam Generators andassociated equipment for the GMR EnergyPower Plant project located on JurongIsland, Singapore.Vogt Power will design and deliver twounfired, three pressure level, HRSGs withreheat for use behind Siemens SGT5-4000Fgas turbines.The HRSGs will be Vogt’s ‘Loose Harp’design that helps reduce the size andnumber of cranes on site, while allowingfor multiple modes of transportation.GMR Energy is Singapore’s first foreignindependent power project, the gas-firedcombined cycle power plant is expectedto be one of the most efficient units inthe country.The project is due to be complete bythe end of 2013, and will be fuelled byregasified LNG.“We are pleased that our HRSGs will bepart of a plant that will help Singaporemeet its increasing energy demand andour technology will aid in generating safe,reliable, environmentally friendly energy,”Steve Kapsalis, President and CEO of VogtPower International, told WIP.Babcock Power Inc. is one of theworld’s leading suppliers of technology,equipment and services to the powergeneration industry.Babcock Power designs, manufacturesand services heat recovery steamgenerators and simple cycle exhaustsystems through its Vogt PowerInternational Inc. subsidiary located inLouisville, KY. It provides heatexchangers and after market services,including moisture separator reheaters,steam surface condensers and feedwaterheaters for fossil-fired, nuclear andconcentrated solar plants through itsThermal Engineering International (USA)Inc. subsidiary located in Santa FeSprings, CA; and provides new steam generators,environmental solutions (SCRs,flue gas scrubbers and mercury removalsystems), and a complete portfolio ofaftermarket solutions to the electricutility & waste-to-energy industries.WIPInternet linkwww.vogtpower.com36M ARCH 2012 • WORLDWIDE I NDEPENDENT P OWER
HYDROPOWERMore energy from theCanate Hydropower Station, ItalyIn the upgrade of a 40-year-old small hydropower station in Genoa, Northern Italy, the Energyoperator IREN SpA chose Cummins Generator Technologies to provide a 11MWA AvK®synchronous generator via Troyer AG, responsible for the refurbishment project, reports WIP.In the heart of a mountain lies theCanate hydropower station. It issituated at the key point where energyis derived from a pipeline providing drinking water to the city of Genoa, innorth-west Italy on the Gulf of Genoa, anarm of the Ligurian Sea.Genoa is Italy's chief port and a majorcommercial and industrial centre with alocal population of 616,000.The electricity generated by the plant isexported to the nearby electricity gridwhere it makes an important contributionto energy supplies.Troyer AG, a leading hydro solutionsspecialist was commissioned to overseethe sourcing, delivery, installation andstart-up of the power generationequipment – a package involving aturbine, synchronous generator andswitchboards.A low speed Pelton turbine was chosenfor the installation, with a stainless steelrunner designed to be mounted directlyonto the extended generator shaft.Cummins Generator Technologies waschosen to supply the synchronousgenerator – AvK® DIG171 - because of itsreputation for a long lifetime of reliabilityin small hydropower applications.Although the rated speed specified was750rpm, the generatordesign needed to withstandrunaway speeds of1350rpm for 10 minutes.To support the highradial load forces(164kN) from theturbine, the generatorwas mounted on aspecial designed steelbase frame with apedestal sleeve bearingon the drive end.A hydrostatic jackingoil system ensured highpressure oil lubrication ofbearings during start up and shut down ofthe generator.The generator was also equipped with atop-mounted air-to-water heat exchangerto provide for efficient cooling.During the installation work at thepower station, a major challenge wastransporting the generator through anarrow 200-metre long access tunnel foroffloading in the turbine hall.To overcome the 3.8-metre heightrestrictions of the tunnel, the generatorneeded to be loaded on to a low-leveltrailer and the top-mounted water coolerremoved. A truck then slowlymanoeuvred the trailer down through thetunnel.The AvK® generator successfullycompleted operational testing and therefurbished hydropower station is nowoperational - providing parallel power tothe local grid.Local geography plays its part in makinga hydropower station possible. The Alpsare the youngest and highest mountainsystem in Europe. They stretch across thewestern and southern part of thecontinent in a broad arc and are utilisedby a number of countries for theirhydroelectric potential.The mountain range starts near theMediterranean Sea on the borderbetween France and Italy. Then it curvesnorth- and eastward through northernItaly, Switzerland Liechtenstein, southernGermany, Austria and Slovenia. Thissection of the Alps is over 260 km wide.The highest peak, Mont Blanc, situated onthe border between France, Italy andSwitzerland, rises 4,807 metres high. WIPInternet linkwww.cumminsgeneratortechnologies.com.W ORLDWIDE I NDEPENDENT P OWER • MARCH 201237
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