• 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