Title of article :
Leak-tightnesscharacteristicsconcerningthecontainmentstructuresoftheHTTROriginalResearchArticle
Author/Authors :
NariakiSakaba، نويسنده , , KazuhikoIigaki، نويسنده , , MasaakiKondo، نويسنده , , KoichiEmori، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
Abstract :
ThecontainmentstructuresoftheHTTRconsistofthereactorcontainmentvessel,theservicearea,andtheemergencyairpurificationsystem,whichminimisethereleaseoffissionproductsinpostulatedaccidents,whichleadtofissionproductreleasefromthereactorfacilities.Thereactorcontainmentvesselisdesignedtowithstandthetemperatureandpressuretransientsandtobeleak-tightinthecaseofaruptureoftheprimaryconcentrichot-gasduct,etc.Thepressureinsidetheserviceareaismaintainedatanegativepressurebytheemergencyairpurificationsystem.Theemergencyairpurificationsystemwillalsoremoveairborneradioactivityandwillmaintainacorrectpressureintheservicearea.
Theleak-tightnesscharacteristicsofthecontainmentstructuresaredescribedinthispaper.Themeasuredleakageratesofthereactorcontainmentvesselwereenoughlessthanthespecifiedleakagelimitof0.1%/dconfirmedduringthecommissioningtestsandannualinspections.Theserviceareawaskeptinawaythatthedesignpressurebecomeswellbelowitsallowablelimitationbytheemergencyairpurificationsystem,whichfiltersefficiencyofparticleremovalandiodineremovalwelloverthelimitedvalues.
Theobtaineddatademonstratethatthereactorcontainmentstructureswerefabricatedtominimisethereleaseoffissionproductsinthepostulatedaccidentswithfissionproductreleasefromthereactorfacilities.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
