ML17206A919: Difference between revisions

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| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| page count = 3
| page count = 3
}}
=Text=
{{#Wiki_filter:lSJun<8AS:i~Mr.JamesP.O'Reilly,Director,RegionIIOfficeofInspectionandEnforcementU.S.NuclearRegulatoryCommission101MariettaStreet,Suite3100Atlanta,Georgia30303
==DearMr.O'Reilly:==
Re:RII:JPO50-389IEBulletin79-07FLORIDAPOWERIILIGHTCOMPANYJune14,1979L-79-164FloridaPowerandLightCompanyhasreviewedthesubjectBulletin79-07andaresponseisattached.Verytrulyours,RobertE.UhrigIVicePresidentAdvancedSystems&TechnologyREU:TCG:cfAttachmentcc:HaroldF.Reis,Esquire
ATTACHHENTRE:RII:JPODocket50-389IEBulletin79-07ActionItem1NoneofthemethodsspecifiedintheBulletinwereusedbytheArchitect-Engineer(A/E)ortheNuclearSteamSystemSupply(NSSS)vendor.FloridaPower8LightCompanyusesADLPIPE(option1.92)toperformseismicanalysesofsafetyrelatedpipingplantchangesandmodifications(PCH's).Thiscodeusesthesquarerootsumofthesquaressummationofmomentsforeachprincipalaxisforeachmodeandasquarerootsumofmodelmoments.Noneofthemethodsspecifiedinthesubjectbelletinareusedforseismicanalysisofsafetyrelatedpiping.ActionItem2Notapplicable.ActionItem3ThecodeusedbytheA/EforanalysisoftheSt.LuciepipingsystemshasbeenverifiedagainstthecurrentversionofthePIPESTRESS2010program.ThePIPESTRESS2010programhas,inturn,beencomparedwithsolutionstosampleprogramsgeneratedbysimilar,independentlywrittenprogramsinthepublicdomain,namelyANSYSandPIPESD.ThiscomparisonshowsthePIPESTRESS2010resultstobesubstantiallythesameasresultsgeneratedbytheaboveprogramsandbyhandcalculations.ThecodesandmethodologyusedbytheNSSSvendoraredescribedinSections3.7.2,SeismicSystemAnalysis,and3.7.3,SeismicSubsystemAnalysis,ofthePreliminarySafetyAnalysisReport(PSAR)submittedforSt..LucieUnit2.ADLPIPEhasbeenverifiedbyArthurD.Little,Inc.(ADL)asdescribedinamemorandumfromADLtoNRCdated4/19/79.ActionItem4Notapplicable.
}}
}}

Revision as of 18:05, 26 April 2018

Responds to IE Bulletin 79-07.None of Methods Specified Used by A/E or Nsss.Adl Pipe Used to Perform Seismic Analyses of safety-related Piping Plant Changes & Mods
ML17206A919
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 06/14/1979
From: UHRIG R E
FLORIDA POWER & LIGHT CO.
To: OREILLY J P
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
L-79-164, NUDOCS 7907310191
Download: ML17206A919 (3)


Text

lSJun<8AS:i~Mr.JamesP.O'Reilly,Director,RegionIIOfficeofInspectionandEnforcementU.S.NuclearRegulatoryCommission101MariettaStreet,Suite3100Atlanta,Georgia30303

DearMr.O'Reilly:

Re:RII:JPO50-389IEBulletin79-07FLORIDAPOWERIILIGHTCOMPANYJune14,1979L-79-164FloridaPowerandLightCompanyhasreviewedthesubjectBulletin79-07andaresponseisattached.Verytrulyours,RobertE.UhrigIVicePresidentAdvancedSystems&TechnologyREU:TCG:cfAttachmentcc:HaroldF.Reis,Esquire

ATTACHHENTRE:RII:JPODocket50-389IEBulletin79-07ActionItem1NoneofthemethodsspecifiedintheBulletinwereusedbytheArchitect-Engineer(A/E)ortheNuclearSteamSystemSupply(NSSS)vendor.FloridaPower8LightCompanyusesADLPIPE(option1.92)toperformseismicanalysesofsafetyrelatedpipingplantchangesandmodifications(PCH's).Thiscodeusesthesquarerootsumofthesquaressummationofmomentsforeachprincipalaxisforeachmodeandasquarerootsumofmodelmoments.Noneofthemethodsspecifiedinthesubjectbelletinareusedforseismicanalysisofsafetyrelatedpiping.ActionItem2Notapplicable.ActionItem3ThecodeusedbytheA/EforanalysisoftheSt.LuciepipingsystemshasbeenverifiedagainstthecurrentversionofthePIPESTRESS2010program.ThePIPESTRESS2010programhas,inturn,beencomparedwithsolutionstosampleprogramsgeneratedbysimilar,independentlywrittenprogramsinthepublicdomain,namelyANSYSandPIPESD.ThiscomparisonshowsthePIPESTRESS2010resultstobesubstantiallythesameasresultsgeneratedbytheaboveprogramsandbyhandcalculations.ThecodesandmethodologyusedbytheNSSSvendoraredescribedinSections3.7.2,SeismicSystemAnalysis,and3.7.3,SeismicSubsystemAnalysis,ofthePreliminarySafetyAnalysisReport(PSAR)submittedforSt..LucieUnit2.ADLPIPEhasbeenverifiedbyArthurD.Little,Inc.(ADL)asdescribedinamemorandumfromADLtoNRCdated4/19/79.ActionItem4Notapplicable.