Title of article
Fromfieldtofactory—TakingadvantageofshopmanufacturingforthepebblebedmodularreactorOriginalResearchArticle
Author/Authors
EdwardWallace، نويسنده , , RegisMatzie، نويسنده , , RogerHeiderd، نويسنده , , JohnMaddalena، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
9
From page
445
To page
453
Abstract
Themoveofnuclearplantconstructionfromthefieldtothefactoryforsmall,advancedpebblebedmodularreactor(PBMR)designshassignificantbenefitscomparedtotraditionallightwaterreactor(LWR)fieldorienteddesigns.Theuseofmodularfactoryconstructiontechniqueshasagrowingeconomicbenefitovertimethroughwell-establishedprocesslearningapplications.
ThispaperaddressesthebasicPBMRdesignobjectivesandcommercializationmodelthatdrivethisapproach;providesabrieftechnicaldescriptionofthePBMRdesignandlayoutwithrepresentativeCADviewsanddiscussesderivedfiguresofmerithighlightingtherelativesimplicityofPBMRcomparedtoamodernLWR.ThediscussionemphasizesthatmoreofPBMRcanbebuiltinthefactoryduetothesimpledesignofadirectheliumBraytoncyclecomparedtoanindirectLWRsteamcyclewithitsassociatedequipment.ForthePBMRdesigntherearefewerandlesscumbersomeauxiliaryandsafetysystemswiththeirattendantsupportrequirements.
Additionally,thelaborforceeconomicefficiencyfornuclearprojectsisbetterinthefactorythaninthefield,includingconsiderationoflaborcostsandnuclearqualityprograms.Industriallearningisbetterinthefactorybecauseofthemorecontrolledenvironment,mechanizationoptimizationopportunitiesandbecauseofthemorestablelaborforcecomparedtothefield.Supplychainbenefitsaremorereadilyachievablewithstrategiccontractsformodulesuppliers.Althoughbuildinganuclearpowerplantisnotatypicalhighvolumemanufacturingprocess,forthePBMR-typeofplant,withitshighdegreeofstandardizationandrelativelysmall,simplifieddesign,theshifttofactoryworkhasasignificantimpactonoverallprojectcostduetoearlieridentificationandbettercoordinationofparallelconstructionpaths.ThisisinstarkcontrasttotheconstructionofalargeLWRinthepast.Finally,thePBMRmodularplantconceptcontinuesattheoverallplantlevelwhereuptoeightunitscanbeintegratedintoonesiteonaplotplansmallerthananequivalentlargeLWRwithsimilarelectricoutput.
Thebottomlineisthatschedulesareshorter,theabsolutecostislower,andbotharemorepredictable.Theseadvantageswillyieldahigherreturntoclientsandinvestors
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2006
Journal title
Nuclear Engineering and Design Eslah
Record number
896005
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