Title of article :
LeakbehaviorofSCCdegradedsteamgeneratortubingsofnuclearpowerplantOriginalResearchArticle
Author/Authors :
SeongSikHwang، نويسنده , , HongPyoKim، نويسنده , , JoungSooKim، نويسنده , , KennethE.Kasza، نويسنده , , JangyulPark، نويسنده , , WilliamJ.Shack، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Abstract :
AforcedoutageduetoasteamgeneratortubeleakinaKoreannuclearpowerplanthasbeenreported.Primarywaterstresscorrosioncrackinghasoccurredinmanytubesintheplant,andtheywererepairedusingsleevesorplugs.Inordertodevelopproperrepaircriteria,itisnecessarytounderstandtheleakbehaviorofthetubescontainingstresscorrosioncracks.Crackedspecimenswerepreparedusingaroomtemperaturecrackingtechnique,andtheleakratesandburstpressuresofthedegradedtubesweredeterminedbothatroomtemperatureandatahightemperature.Sometubeswith100%throughwallcracksdidnotshowaleakageat10.8MPa,whichisthetypicalpressuredifferenceofthepressurizedwaterreactors(PWRs)duringanormaloperation.Insometests,theleakratesofthetubesincreasedwithtimeataconstantpressure.Inahightemperaturepressuretestat282°Conespecimenshowedaverysmallleakageat18.6MPa,whichstoppedafterasmallincreaseinthetestpressure.Becausestresscorrosioncrackscandevelopatrelativelylowstresses,even100%throughwallcrackscanbesotightthattheywillnotleakatanormaloperatingpressure.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
