Title of article
On-linemonitoringtheincorepowerdistributionbyusingexcoreion-chambersOriginalResearchArticle
Author/Authors
YaqiWang، نويسنده , , FuLi، نويسنده , , ZhengpeiLuo، نويسنده , , SongHan، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
12
From page
315
To page
326
Abstract
Formostofnowadaypressurizedwaterreactors(PWR),excoreion-chambers(EIC)arethesolereal-timesensorsrespondingtotheincorepowerdistribution(IPD).Conventionally,itissupposedthattheEICcouldnotcarryoutinformationoftheIPDinradialdirection.Asaresult,thereisanexcessconservatismwhentheyarebeingusedforthecoremonitoringsofar,andsomeflexibilitiesofthereactoroperationaresacrificed.Thoughprogresseshavebeenmade,therearestillsomeinevitableobstaclesaboutnewlydevelopedmonitoringmethods:mountingandmaintainingalargeamountoffixedincoredetectorsarecostly;andtheIPDcalculatedbyon-linesimulatorsisnotthe“measured”one.FortunatelyvariationsintheIPDmustbedrivenbyreasonablephysicalcauses,andthecorrespondingvariationsinthereadingsoftheEICarenotableenoughtobeidentified.SowithaspecificreferencedIPDmeasuredfromperiodicalfluxmappings,itispossibletoon-linemonitorsuchvariationsbyusingtheEIC.Aimedatthis,aharmonicsgroupingmethodandanalgorithmofhigherorderperturbationvariablesaredeveloped,andaninfluenceequationforcontrolrodsisalsoproposed.ThenapreciserestrictionequationdescribingthereasonablevariationsintheIPDisdeducedforexampleoftheHeatingReactor.Combinedwithaproper-configuredEIC,asystematic“excore-to-incore”methodisrealizedfinally.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2003
Journal title
Nuclear Engineering and Design Eslah
Record number
894614
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