Title of article
Developmentofafoulingmonitorforsafety-relatedheatexchangersOriginalResearchArticle
Author/Authors
GyunyoungHeo، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
9
From page
1295
To page
1303
Abstract
Periodicsafetyreviews(PSRs)areperformedtoverifyand/orimprovethesafetyofoperatingnuclearpowerplants.WhenthePSRofGoriUnits3/4inSouthKoreawasperformed,afewsafety-relatedheatexchangerswerepointedoutascomponentsinneedofanageingmanagementprogram.Thisstudysharesthemotivationwiththenecessityoftheageingmanagementprogram.Wedevelopedaconditionmonitoringmethodologyforidentifyingoneoftheageingmechanismsinthesafety-relatedheatexchangersandnameditthefoulingmonitor.Thefoulingmonitoriscomposedof(1)themodelfordeterminingthetestfoulingresistanceandtheprojecteddesignfoulingresistanceatatestcondition,and(2)themonitoringanddetectionoftheirdeviation.Themathematicalmodelfordeterminingtheprojecteddesignfoulingresistanceatatestconditionneedstobeconsideredcarefullybecausetheheatexchanger,andparticularlyinthisstudy,theletdownheatexchanger,isnormallytestedunderoperatingconditionsthatdifferconsiderablyfromthedesignconditions.Thisneedwasmetbydevelopingindependentphysicalandempiricalcorrectionmethodsofwhichconsistencyiscross-checked.Eitherorbothcorrectionmethod(s)convertthedesignfoulingresistanceintoaprojectedfoulingresistance,whichisfinallycomparablewiththetestfoulingresistance.Themonitoringanddetectionmethodtracksthedeviationofthetestfoulingresistanceandtheprojectedfoulingresistance.Consideringthestochasticcharacteristicsoffoulingphenomena,weadoptedthesequentialprobabilityratiotesttodetermineappropriateschedulingforcost-andsafety-optimizedmaintenanceoftheheatexchanger.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895089
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