Title of article
DesignandmodificationofsteamgeneratorsafetysystemofFBRMONJUOriginalResearchArticle
Author/Authors
MakotoMatsuura، نويسنده , , MasakazuHatori، نويسنده , , MakinoriIkeda، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
10
From page
1419
To page
1428
Abstract
MONJUisaprototypefastbreederreactor(FBR)inJapan.Thesodium–waterreactioninthesteamgenerator(SG)isoneoftheimportantsafetyassessmentitemsforasodiumcooledreactorlikeMONJU.MONJUisequippedwithhydrogengasdetectorsforthesmallwaterleakdetection,gaspressuregaugesforthemediumleakandsensorsofrupturediscsforthelargeleak.Asadesignbasisaccident,onetubefailurethenfailurepropagationofneighboringthreetubesisassessedtoverifythestructuralintegrityofthesecondarycomponents.AlatestevaluationmethodonthedesignmarginagainsttheoverheatingtuberuptureshowedthatthepresentSGsystemhadnotanenoughmarginintheworstcase.Forimprovingthemargin,itneedstoshortenthetimeofthesodium–waterreactionbyearlierwaterleakdetectionintheSGandsoonerwaterejectionfromtheSGtubes.Therefore,MONJUisnowcarryingoutthefollowingmodificationworks:(1)additionofsteamreliefvalves,(2)additionofagaspressuregaugewithchangingtheinterlocklogicandloweringthetriggerlevel,(3)reducingtheopeningofthevalvesontheSGgasflowlinetothedumptankbecauseofearlierdetectionforthepressurerise.Afterthismodification,thedesignmarginoftheSGsystemwillbesufficientlyimproved.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2007
Journal title
Nuclear Engineering and Design Eslah
Record number
941402
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