Title of article
IndirectaircoolingtechniquesforcontrolroddrivesinthehightemperatureengineeringtestreactorOriginalResearchArticle
Author/Authors
TakeshiTakeda، نويسنده , , YukioTachibana، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
16
From page
25
To page
40
Abstract
Thehightemperatureengineeringtestreactor(HTTR)isthefirsthigh-temperaturegas-cooledreactorinJapanwithreactoroutletgastemperatureof950°Candthermalpowerof30MW.SixteenpairsofcontrolrodsareemployedforcontrollingthereactivitychangeoftheHTTR.Eachstandpipeforapairofthecontrolrods,whichisplacedonthetopheaddomeofthereactorpressurevessel,containsonecontrolroddrivemechanism.Thecontrolroddrivemechanismmaymalfunctionbecauseofreductionoftheelectricalinsulationoftheelectromagneticclutchwhenthetemperatureexceeds180°C.Because31standpipesstandclosetogetherinthestandpiperoom,16standpipesforthecontrolrods,whicharelocatedatthecenter,shouldbecooledeffectively.Therefore,thecontrolroddrivesarecooledindirectlybyforcedaircirculationthroughapairofring-ductswithproperairoutletnozzlesandinlets.Basedonanalyticalresults,apairofthering-ductswasinstalledasoneofstructuresinthestandpiperoom.Evaluationresultsthroughtherise-to-powertestoftheHTTRshowedthattemperaturesoftheelectromagneticclutchandtheambientheliumgasinsidethecontrolrodstandpipeshouldbebelowthelimitsof180and75°C,respectively,atfullpoweroperationandatthescramfromtheoperation.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2003
Journal title
Nuclear Engineering and Design Eslah
Record number
894551
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