Title of article
PassivesystemreliabilityanalysisusingtheAPSRAmethodologyOriginalResearchArticle
Author/Authors
A.K.Nayak، نويسنده , , M.R. Gartia، نويسنده , , A.Antony، نويسنده , , G.Vinod، نويسنده , , R.K.Sinha، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
11
From page
1430
To page
1440
Abstract
Inthispaper,wepresentamethodologyknownasAPSRA(AssessmentofPassiveSystemReliAbility)forevaluationofreliabilityofpassivesystems.ThemethodologyhasbeenappliedtotheboilingnaturalcirculationsystemintheMainHeatTransportSystemoftheIndianAHWRconcept.IntheAPSRAmethodology,thepassivesystemreliabilityisevaluatedfromtheevaluationofthefailureprobabilityofthesystemtocarryoutthedesiredfunction.Themethodologyfirstdeterminestheoperationalcharacteristicsofthesystemandthefailureconditionsbyassigningapredeterminedfailurecriteria.Thefailuresurfaceispredictedusingabestestimatecodeconsideringdeviationsoftheoperatingparametersfromtheirnominalstates,whichaffectthenaturalcirculationperformance.Sinceapplicabilityofthebestestimatecodestopassivesystemsareneitherprovennorunderstoodenough,APSRAreliesmoreonexperimentaldataforvariousaspectsofnaturalcirculationsuchassteady-statenaturalcirculation,flowinstabilities,CHFunderoscillatorycondition,etc.APSRAproposestocomparethecodepredictionswiththetestdatatogeneratetheuncertaintiesonthefailureparameterprediction,whichislaterconsideredinthecodeforaccuratepredictionoffailuresurfaceofthesystem.Oncethefailuresurfaceofthesystemispredicted,thecauseoffailureisexaminedthroughrootdiagnosis,whichoccursmainlyduetofailureofmechanicalcomponents.ThefailureprobabilityofthesecomponentsareevaluatedthroughaclassicalPSAtreatmentusingthegenericdata.Reliabilityofthenaturalcirculationsystemisevaluatedfromtheprobabilityofavailabilityofthecomponentsforthesuccessofnaturalcirculationinthesystem.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895101
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