ML17266A018: Difference between revisions

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SECTIONXImayhaveallowancesformultiplecleanings.NounexpectedorexotictypesofcorrosionhaveoccurredthroughouttestingbyDoworCombustionEngineering.InparticulartheInconelTubesshowratesofcorrosionveryclosetozeros8)Thisisconsidered,tobeamaintenanceevolutionofapreventativenature.Consideringtheprecedingandthat:l.Theprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimport-anttosafetypreviouslyevaluatedintheSafetyAnalysisReportisnotincreased.2.ThepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSafetyAnalysisReportisnotcreated.3.ThemarginofsafetyasdefinedinthebasesforanyPlantTechnicalSpecificationisnotreduced.IT'ISCONCLUDEDTHATTHEPROPOSEDSTEAM'GENERATORCHEMICALCLEANINGPROGRAMDOESNOTINVOLVEANUNREVIEWEDSAFETYQUESTION+"ThisopinionisbasedoninformationabouttheSteamGeneratorChemicalCleaningProgramasitpresentlyexists.XII-2 SECTIONXXCertaindevelopmentalandprocesstestingworkisongoingatthistimeandmayresultinchangestotheprogram.Itisintendedtosubjectanychangesthatmayoccur,whenfinali-zed,tothesamereviewprocessasisconductedonthisEvaluationReport.Adeterminationwillbemade'thatthesechanges,ifany,donotaffecttheFloridaPowerandLightopinionofthiscleaningoperationpriortocommencementofcleaningactivitiesontheSt.LuciePlantSteamGenerators.XII-3 C
SECTIONXImayhaveallowancesformultiplecleanings.NounexpectedorexotictypesofcorrosionhaveoccurredthroughouttestingbyDoworCombustionEngineering.InparticulartheInconelTubesshowratesofcorrosionveryclosetozeros8)Thisisconsidered,tobeamaintenanceevolutionofapreventativenature.Consideringtheprecedingandthat:l.Theprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimport-anttosafetypreviouslyevaluatedintheSafetyAnalysisReportisnotincreased.2.ThepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSafetyAnalysisReportisnotcreated.3.ThemarginofsafetyasdefinedinthebasesforanyPlantTechnicalSpecificationisnotreduced.IT'ISCONCLUDEDTHATTHEPROPOSEDSTEAM'GENERATORCHEMICALCLEANINGPROGRAMDOESNOTINVOLVEANUNREVIEWEDSAFETYQUESTION+"ThisopinionisbasedoninformationabouttheSteamGeneratorChemicalCleaningProgramasitpresentlyexists.XII-2 SECTIONXXCertaindevelopmentalandprocesstestingworkisongoingatthistimeandmayresultinchangestotheprogram.Itisintendedtosubjectanychangesthatmayoccur,whenfinali-zed,tothesamereviewprocessasisconductedonthisEvaluationReport.Adeterminationwillbemade'thatthesechanges,ifany,donotaffecttheFloridaPowerandLightopinionofthiscleaningoperationpriortocommencementofcleaningactivitiesontheSt.LuciePlantSteamGenerators.XII-3 C
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}}

Revision as of 12:02, 18 May 2018

Steam Generator Chem Cleaning Prog for St Lucie Plant Unit #1 Safety Eval Rept. Engr Drawing Encl
ML17266A018
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 11/24/1978
From: UHRIG R E
FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML17266A017 List:
References
NUDOCS 7812270275
Download: ML17266A018 (158)
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{{#Wiki_filter:FLORIDAPOWERgi:LIGHTCO.STEAMGENERATORCHEMICALCLEANINGPROGRAMFORST.LUCIEPLANTUNITNO~ISAFET'YEVALUATIONREPORTNOVEMBER24,1978 $H;i'bjg't7r<~~:.W4i.>'tII INDEXSECTIONISECTIONIISECTIONIIISECTIONIV"SECTIONVSECTIONVISECTIONVIISECTlONVIIISECTIONIXSECT10NXSECTIONXISECTIONXIIIntroductionTheProblemTheProgramSolventCorrosionEngineeringSystemInstallationSystemOperationWasteDisposalPreandPostInspectionContingencyPlanf'rContaminatedWasteVibrationFloridaPowerandLightCompanyOpinion tq INTRODUCTIONThisdocumentcontainstheFloridaPowerandLightCompanySteamGeneratorSecondarySideChemicalCleaningProgramDescriptionandSafetyEvaluationfortheSt.LuciePlantUnitglSteamGenerators.Itistheintentofthisprogramto"capture"thedentingprogressionatSt.Lucieinitsearlystagestoallowfutureunrestrictedoperationandavoidcostlyrepairsthatcanoccurinadvancedstagesofthisproblem.Toaccomplishthisprogram,thecapabilitiesoffour(0)Companieshavebeenbroughttogetheranddirectedtowardsacommongoal....thechemicalcleaningoftheSt.LuciePlantSteamGenerators.TheCompaniesandtheirresponsibilitiesare:1)FloridaPowerandLightCompany--overallprogramco-ordinationandresponsibility.2)CombustionEngineering--NSSSVendor--Sol-ventProcessQualification;Engineering-TestingandSupport;CorrosionTesting;TechnicalReview;LicenseAssistance;VibrationTestingandAnalysis. 3)DowChemicalCompany--SolventVendor--SolventProcessdevelopmentandtesting;EngineeringReview;Technicaldirectionforprocessuse;AnalyticalServices;EnvironmentalandWasteDisposalAssistance.0)EbascoServices--ArchitecturalEngineersforSt.LuciePlant--Detaileddesignpack-age;materialsprocurementassistance;SystemConstruction;removalofsystemaftercleaning;EngineeringandTechnicalreview.ItisthehopeofFloridaPowerandLightCompanythatthesuccessfulculminationofthiseffortwillresultinaviabletreatmentforthisproblematSt.LuciePlantandthroughouttheNuclearPressurizedWaterReactorIndustry.Respectlly,CharlesA.MooreProjectManagerSteamGeneratorChemicalCleaningFloridaPowerandLightCompany SECTIONITHEPROBLEMTheSt.IucieUnitglSteamGeneratorshavetwo(2)setsofdrilledcarbonsteelpartialsupportplatesintheupperpartofthetubebundle(SeeFig.I-1).Approx-'mately2220ofthe8519tubespassthruoneorbothofthesepartialsupportplates(SeeFig.I-2andI-3).Theremainderofthetubesattheseelevationsandallothertube-to-supportintersectionsareoftheCombustionEngineering"Egg-Crate"design.Noproblemsareindicatedinthe"Egg-Crate"supportarrangementsoftheSt.LuciePlantSteamGenerators.(SeeFig.I-4.)IThepartialplatesareone(1)inchthickanddrilledsuch'hatanapproximate8milradialannulusexistswhentheInconeltubeisinserted(SeeFig.I-5).Duringplantoperationstheseannulibecomefouledwithcorrosionpro-ductsfromthesecondarysystemsvianormalSteamGeneratormake-up.Whilethiscondition,initself,mightnotbeofmajorconcern,theresultofthisfoulingisthateffectivelya"mini-concentrator"iscreatedinthe.crevices,which'allowscontaminantsintheSteamGeneratorbulkwatertoconcentratetohighlevelsintheannuli. SECTIONIConcentrationfactorsofgreaterthan10,')'30havebeenobservedintestingperformedbyPWRNSSS-Vendors(SeeF1g.I-6andI-7).Specifically,fromcondenserinleakage,chloridesconcentrateinthefouledcrevicesforminganacidchloridethatcausesaccelerated(Non-protectivemagnetite)corrosiontooccurcontinuouslyonthecarbonsteelsupportplates.Inthereactionoftheiron(Fe)withoxygen(02)toformFe0~(magnetite),theproductformedoccupiesapproximatelytwicethespaceastheoriginalreactants.Thiscausesacompactingofthematerialinthecreviceeventuallyresultinginacouplingbetweenthetubeandthetubesupportplate.Asthecorrosioncontinues,sincethemagnetitecannotexitfromthedeep(1")crevice,pressureisexertedonthetubesandlikewiseonthetubesupportplate,Thisisthebeginningofthephenomenonknownas"denting",inthatthesteamgeneratortubeactuallystartsto'hourglass'r'neckdown'nthetubesupportplate,duetotheincreasingpressure.Co'ncurrentwiththetubedenting,pressuresarealsobeingexertedonthetubesupportplate.Thedenting,inadvancedstages,leadstotwo(2)problems: SECTIONI(1)Thetubeisreducedininsidediameter(ID)toapointofcrackinginwardly,causingpri-marytosecondaryleakage.(2)Thestressonthetubesupportplatecausesdeformationandcrackingwhichcanleadtolossoftubesupportandtubefailuresduetotheshearingactionfromplatemovement.Itcanbeclearlyseenthatadvancedstagesofdentingareundesireable.Atthistime,St.LuciePlantiswellremovedfromtheeffectsdescribedaboveandeffectiveremedialactionshouldpreventsuchaconditionfromdeveloping.ThefollowingpagescontainsummariesoftheSt.LuciePlantSteamGeneratorinspections,asfoundattheApril,1978refuelingoutageandtheNovember,1978shutdownforSteamGeneratorInspection. ST.LUCIE-ISTEAMGENERATORASUMMARYOFEDDYCURRENTTESTRESULTSAPRIL,1978REFUELINGTUBESEXAMINED/oOFTOTALHOTSIDEDEFECTDETECTIONCOLDSIDEDEFECTDETECTION5801006.91.2NOREPORTABLETUBEWALLDEGRADATIONNOREPORTABLETUBEWALLDEGRADATIONHOTSIDESLUDGE600.70INCHMAXIMUMCOLDSIDESLUDGE,600.73$INCHMAXIMUM ST.LUCIEISTEAMGENERATORASUMMARYOFDENTINDICATIONSAPRIL,1978REFUELINGINSPECTEDTUBE/SUPPORTPIATEINTERSECTIONSNUMBER.OFTOTALNUMBERWITHCENTERDENTSfoOFINTERSECTIONSINSPECTED-WITHDENTSglOHOTSIDEg9HOTSIDEf10COLDSIDEg9COLDSIDE275275510357'4.5'57'2.9'82Ogo4.2'.5'fofoOFSUPPORTPLATEINTERSECTXONSTESTEDWITHDENTSfoOFTUBESINSPECTEDWITHDENTSINDICATIONSATSUPPORTPLATEEDGES6.3'4.6'2(PREDOMINANTLYATglOHOT) FLORIDAPOWERANDLIGHTST.LUCIEINUCLEARPOWERPLANTEXCERPTSFROMSTEAMGENERATORSECONDARYSIDEVISUALINSPECTIONAPRIL18 SECTIONIFloridaPowerandLihtSt.Lucie1NuclearPowerPlantSteamGeneratorSecondarSideVisualInsectionINTRODUCTIONThisreportcoversthevisualinspectionofthesecondarysideofsteamgeneratorsattheFloridaPowerandLightSt.Lucie1NuclearPowerPlant,performedbyCombustionEngineering,Inc.(C-E)duringApril1978.Theinspectionwasaccomplishedduringascheduledrefuelingoutagetodeterminetheoverallconditionofthesteamgenerators.InitialcriticalityoccurredinApril1976withanaccumulatedpowerhistoryofapproximately370effectivefull-powerdayspriortothisvisualinspection.SpecialequipmentprovidedbyC-Eforthevisualinspec-tionincludedaspeciallyadaptedclose-upcamera,horoscope,fiberopticsequipment,a35mmcamera,samplecollectingequipment,andothermiscellaneousitemsusedintheinspection.INSPECTIONTheactualvisualinspectionofthe"A"steamgeneratorbeganApril2,1978inthedryer/separatorregion.Thisregionwasfoundtobeingoodgeneralconditionwithdryerchevronsandsupportsfreefromheavydeposits.Alight SECTIONIlayerofloosepowderymagnetite,whichwaseasilyremovedbywiping,wasobservedonthetopandsidesoftheseparatorcans.Theseparatorwallperforationswerefreeofanyappreciablebuildupofmagnetite.Thecandeckwascleanwithonlyminoraccumulationsofmagnetite.Theexaminationofthefeedwaterringarearevealedthatthefeedwaterringwascoatedwithamoderatelayerofmag-netite.Thefeedwaterdischargeelbowswereexaminedandnoevidenceoferosionwasdiscovered.Theinspectionteamthenproceededtothetubebundleareabelowthecandeck.lngeneral,therewasamoderatetoheavycoatingofmagnetiteonallsurfacesparticulatlythebafflewalkandtheIbeamsupports.Thetubebundleandverticalsupportstrips,however,werenoticeabilyfreefromheavydeposits..Thelightfilmofloosepowderymagnetitewhichcoatedthetubeswaseasilyremovedtorevealbaremetal.Acloseexaminationoftheouterperipheryofthedrilledtubesupportplates,supportsnumber9and10,revealednoapparentdistortionintheplates.Thesupportplate/baffleclearanceweremeasuredatbothelevations.Theone-fourthinch(+~")diameterflowholeswereopenandfreefromnotice-ablebuildup.Thetube/supportplateannuliwereinspectedaroundtheperipheryoftheuppersupportplateonboththe SECTIONIhotandcoldlegsidesandeachannulusappearedtobecompletelyplugged.Anattemptwasmadetoinserta.feelergaugeintotheannulusatseverallocations.Thisattemptfailed,aseachlocationcheckedwouldnotacceptthetipofa0.002"gauge.Thenominalinstalledradialgapfortheseannuliis0.00'7".Severalattemptsweremadetoremovethematerialfromtheannuliwithoutsuccess.Severaloftheverticalsupportstripsweremeasuredbeforeandafterwirebrushingtoremoveoxidesanddeposits.Therewasnodifferenceinthebefore.andaftermeasurementswiththeaveragethicknessbeing0.094".Thenominalin-stalledthicknessoftheverticalstripswas0.090-0.005".Theinspectionoftheareasaccessiblefromthesecondarymanwaywasconcludedatthispoint.Theinspectionthenproceededtothehandholeregion.Accesstothe90handholewasbarredbytheECTapparatus;therefore,theinspectorscouldexamineonlythehandholelocatedonthe0axis'hetubesadjacenttothishandholewerecoatedwithamoderatelayerofloosepowderymagnetite.Thislayerwaseasilyremovedbywipingwithaglovedhand.Alightbuildupofmagnetitewasinevidenceonthesurfaceofthetubesheet.Atthispointtheinspectionwasconcludedfortheday. SECTIONITheinspectionofthe"B"steamgeneratorbeganthe,afternoonofApril3,19'78withtheexaminationofthehandholeregion.Thetubesadjacenttothehandholelocatedonthe90axiswereobservedtobecoatedwithalighttomoderatelayerofloosepowderymagnetite.Thislayer,asinthe"A"steamgenerator,waseasilyremovedbywipingwithaglovedhand.Approximatelyone-halfinch(~")ofwaterwascoveringthetubesheetsurface.Thislayerpreventedthedeterminationofthesludgethicknessonthetubesheet.Thefirsteggcratecouldbeseenfromthehandholeandappearedtobefreefromdepositsinthecrevicesbetweenthetubesandeggcratebars.Anexamin-ationoftheeggcratewasconductedwithfiberopticsequipment.Noabnormalitieswereseen.Theinspectionwasthenmovedtothedryer/separatorregion.Therewasnobasicdifferenceintheconditionsobservedinthisregionfromthosepreviouslydescribedfortheunit"A"generator.TheinspectionofthetubebundleareaalsorevealedIthesamebasicconditionsasseeninthe"A"steamgenerator.Thedrilledtubesupportplateswerecloselyexaminedandnovisualevidenceofdistortionwasseen.Thesupportplate/baffleannulusmeasurementsshowedthatingeneral 4l SECTIONIthesupportplatesinthisgeneratorareclosertothebafflethanthoseingenerator"A".Ofparticularnoteistheone-eighthinch(l/8")annulusmeasuredatthecenterofthelowerplate,supportnumber9,onthecoldlegside.Specialeffortwastakeninthisgeneratortoinsertafeelergaugeintothetube/supportplateannuli.Thetipofa0.002"gaugecouldnotbeforcedintoanyofthelocationschecked.Asecondattemptwasmadewithastraightwirefileddowntoapproximately0.002".Againtheinspectorshadnosuccess.CONCLUSIONSBothsteamgeneratorswererelativelycleanandingoodcondition.However,inbothsteamgeneratorsthetube/tubesupportplateannuli(wherevisible)werecompletelyplugged.Attemptstoinsertafeelergaugeintotheannulitomeasuretheannulargapsprovedfruitlessasevena2mil.thickgaugefailedtogoin.Insamplesofsteamgeneratorcrudfromotherplantsiron(asmagnetite)hasusuallybeenthemajorsamplecom-ponentwithcopperastheminorcomponent.IntheSt.LucieIlsteamgeneratorsamplesthesituationwasreversed.Asindicate'dbysampleresults(AttachmentB)ahighcontentofelementalcopperwaspresentinallsamples.Othermetalssuchasnickelandzincwerealso'oted.I-11 0 ATFAGQKlTB)STEAMGELT'ERATORSAMPLESCHEt)ICALANALYSIS hOTE:(F.P.-FlamePhotometry)(A.A.-AtomicAbsorption)(N/D-HoneDetectable)ResultsValuesReortedas/FoundSt.Lucie"A"SteamGeneratorSamlesSemi-uantitiveX-RaFluorescenceAnment8Page1of4ElementSodium(F.P.)Magnesium(A.A.)AluminumSiliconPhosphorous=SulfurChlorinePotassiumCalciumTitaniumYanodiumCromiumhanganeseIron.CoboltNickelCopperZincZirconiummolybdenumTinLeadS-i'iverWaterLevelIndicationNozzler0.1(0.1.0.190.0660.0370.0075H/D0.00250.0130.54N/D0.45.0.5138.0H/D2.935.62.70.015~H/D0.0950.013N/DIBeam~FlanezO.10.200.0660.0450.0031H/DN/D0.0364'43N/D0.120.1324.7H/D5.451.43.5N/D0.00940.170.00890.015SurfaceofSteamSeparatorCan(SmallHolesArea)0.074c0.10.240.0420.0600.0046N/DN/D0.0210.41N/D0.180.2622.60.0614.255.23.40.00860.0240.140.0069H/DTopoftheIBeamcO.l0.330.0670.0500.00570.0130.00190.0200.31N/D0.0990.3331.90.0554.542.52.8N/D0.0160.120.013N/DCanDeckFloor~0.1(0.1O.290.066.'.0520.0047N/DN/D0.0330.45N/D0.140.2124'0.0365.450.73.3N/D0.00790.170.011N/DTopofFeedwater~Rin~0.1<0.10.150.0920.0630.008N/D0.001H/D0.48N/D0.120,1323.1.H/D5.254.03.0H/DH/D0,200.01N/0TopofTubeBundleH/DH/D0.210.100.0580.010H/D0.00120.0080.50N/D0.120.1622.9H/D6.950.93.6N/D0.0140.240.013H/D NOTE:F.P.-FlamePhotometry)A.A.-AtomicAbsorption)H/D-NoneDetectable)Semi-uantitiveX-RaFluorescenceResultsValuesReortedasXFoundAttachmentBPage2of4St.Lucie"B"SteamGeneratorSamlesElementSodium(F.P.)thgnesium(A.A.).AluminumSiliconPhosphorousSulfurChlorinePotassiumCalciumTitaniumVanadiumChromiumtlanganeseIronCoboltftickelCopperZincZirconiumt~aolybdenumTinLeadSilverWaterLevelIndicationNozzle<0.1c0.10.210.061'.022N/00.0051N/D0.00910.44'/D0.340.41'0.30.0671.921.52.10.027N/00.0670.00670.019IBeam~Flane0.074<0.10.340.0720.058N/D0.014N/00.020.0,50N/D0.(l0.3832.10.0674.241.73.0N/DH/D0.0970.023H/0SurfaceofSteamSeparatorCan(SmallHolesArea0.074+0.10.250.0320.0470.0074N/0H/D0.0230.41N/D0.190.2624.60.0624.851..23.70.010H/00.130.00710.0099Topofthe-IBeam0.074(0.10.280.069'0.0510.006N/D0.00130.0190.37H/D0.120.3233.20.0454.540.43.4H/D0.0140.110.011CanDeckFloor<0.10.220.0420.0470.003N/DN/D0.0300.37N/00.140.1926.50.0355.049.83.10.012H/D0.160.0130.017~TopofFeedivaterRingN/0'/00.300.230.0670.019N/DN/DN/D0.48N/00.0890.1119.1N/07.455.63.3N/0N/00.100.032r</0TopofTubeBundle(0.1c'0.10.170.100.0600.0061N/00.001H/00.43N/D0.110.1424.3H/D5.4,51.93.10.008fl/00.210.01 AttachmentBPage3of4X-RaDiffractionResultsSt.Lucie"A"SteamGeneratorSamles.~51LstaterLevelIndicationNozzle~Ma'orFe304CuMinorTracaFe203IBeamFlangeCuFe304CUOSurfaceofSteamSeparatorCan(SmallHolesArea)CuFe304TopoftheIBeamCuFe304Cu0CanDeckFloorCuFe304CUOTopofFeedwaterRingCuF'3'4.CuOCu20TopofTubeBundleCuFe304CUO Attachment0Page4of4X-RaDiffractionResultsSt.Lucie"B"SteamGeneratorSamlesSamleLocation1/aterLevelIndicationNozzle~lia'orFe304CuHioorFe,o,TraceIBeamFlangeCuFe304CUOSurfaceofSteamSeparatorCan(SmallHolesArea)CuFe304TopoftheIBeamCuFe304CUOCanDeckFloorCuFe304CuoTopofFeedleaterRingCuFe304CuoTopofTubeBundleCuFe304.<Cu0Cu>0 ST.LUCIEINovEMBER,1978sHUTDowNSUMMARYOFEDDYCURRENTTESTRESULTSSTEAMGENERATOR1AHOTSIDETUBESUPPELEVNUMBEROFTESTSFREQOFINDICATOCCURRINGfoINDICATIONAVGDENT(mr,s)9106973249112713.0392.19.90TUBESUPPELEVNUMBEROFTESTSSTEAMGENERATOR1ACOLDSIDEFREQOFINDICATOCCURRINGfoINDICATIONAVGDENT(mLS)91069732$63529.016.0.14.g5 ST.LUCIEINOVEMBER,1978SHUTDOWNSUMMARYOFEDDYCURRENTTESTRESULTSSTEAMGENERATOR1BHOTSIDETUBESUPPELEVNUMBEROFTESTSFREQOFINDICATOCCURRINGfoINDICATIONAVGDENT-(MLS)910QO230361016.727123STEAMGENERATOR1BCOLDSIDETUBESUPPELEVNUMBEROFTESTSFREQOFINDICATOCCURRING/oINDICATIONAVG(MLS)910-5392297g95137~21l.00 SECTIONISTEAMGENERATORCONDITIONBothsteamgeneratorswereinspectedbyECTandvisualtechniquesduringtheNovember,19'P8outagetodeterminetheconditionofthesupportplatesandtocheckforanyothercircumstanceswhichwouldcomplicatecleaning.Therewasnoevidenceofsupportplatecrackingineithergenerator,norwasthereevidenceofyieldingwithinthesupportplate.Indeed,exceptforthefactthatmost(butnotall)supportplateannuliwereclosed,thesupportplatesappearedtobeincompletelynominalcon-dition.TheECTexaminationshowedthatthelevelofdentinghadincreasedslightly(lessthanonemil)fromthepreviousexamination.Whilemoredetailedcalculationsarestillunderway,thegenerallevelofdentingfoundwasdeterminedtobelessthanthatrequiredforplateyielding,whichisconsistentwiththevisualstatus.Thesupportplateswillbere-checkedforevidenceofcrackingbeforethestartofanycleaningoperations. ~~~/)aOkIIVIE~K/4~I(IIIIllaf%3lP/IIIIIlllllIlll%50 00000OOOC4000~Cr00090OOCn00000ROw4"(le"l80ST.LUCIEIDRILlEDPLATE(ELEV.10)No.of'ubes--'7'72f0of'otalHeatedSurface-11.7/0I-21 o1Ct4>051o44Tpg</'POO000C'A0'i0tlg(1tlgWiST.LUCIEIDRIXZZDPIATE(EEZV.9)No.of'ubes--2224f,ofTotalHeatedSurface-31.4foI-22 Figel-0BARSUPPORTVE.W'!GALS'TR,1p5j'TRlp~~cjST.LUClE.lTUBESUPPORTI-23 '.':INCONEL'UBE'::";.:i',750."0;D;.-DIA,"tQvlt'24K000000000Q00C~0.00QQQe~4Ir'tt'I-24

OVERVIEWOFDTINGPROCESSSTEAM+WATERHIGHERQUALITYSLOWPURESTEAMANNULUSSTEAMBLANKETEDFASTPURESTEAMtog1~'r,'0(0t.gP.0FLMSTEAM+WATERLQWFLOWSTEAM+WATERSTEAM+WATER+IMPURITIESCLEANANNULUS~FLUSHEDBYHIGHVELOCITYSTEAM-WATERMIXTURE'ITTLEORNOSUPERHEATINANNULUS'QCONCENTRATEQNOFSOLUBLEIMPURITIESCONCENTRATINGANNULUS'LUGGEDWITHSUSPENDEDCORROSIONPRODUCTS,LOWSOLUBIUTYMATL,etc.+SIGNIFICANTSUPERHEAT~LONIVELOCITYDENTEDTUBE~CONDENSERINLEAKAGE~CONCENTRATIONOFACIDSALTSINANNULUSHZO+MgCIZ~Mg0)+ZHCICNITIATIONOF"FASTLINEARMAGNETITE"GROWTHONCARBONSTEEL CLOSEUPOFDENTINGPROCESSHIGHCONCFe2INSOLUTION(FeC!2)pH-5-7(?)Cl7000-60(?)PPMFe+2OH02~Fe304eOHOROCOPPERDEPOSITIONINVICINITYCu+2eCuATINNERSURFACEFeFe+2e,l(0'ooo00bFASTUNEARMAGNETITENOBARRIERTOANIONTRANSFERMICRO-CRACKED,LAMINATEDATOUTERSURFACEOFFLMCONTROLLINGREACTIONPH30+2e2H20+H2tNi,Co,CuMETALLICDEPOSITS~REACTIONCONTROLLED(LIMITED)BYRATEOFREDUCTION-[H>0]ORpHAVAILABILITYOFCATHODICSURFACES(Ni,Co,Cu?)POSS.OTHERREDUCINGREACTIONS SECTIONIXTHEPROGRAMRecognizingtheneedf'rexpeditioushandlingofthisproblem,FloridaPowerandLightinitiatedapro-gramtodevelopandimplementaSteamGeneratorChemicalCleaningProgramgearedtowardstheApril,19'79RefuelingOutage'uchaprocessischemicallyfeasiblebecausedissolvingsludgeandcrevicemagnetiteisanacid-basereaction,whilecorrosionofthecarbonsteelbasemetalisanoxidation-reductionreaction.Byaddingagentstoinhibittheoxidation-reductionreaction,themagnetitecanthenbedissolvedwithrelativelylowlevelsofbasemetalcorrosion'heprogramhasfour(0)parallelpathsofaction,summarizedbelow:Path1.SolventDevelomentSinceaviableprocessdidnotexistatthestartofthisprogram,thereareallowancesfordevelopmentalworkduring.thecourseoftesting.PhaseThisinvolvedcompetitiveevaluationoftwo(2)possiblevendorsofacleaningprocessbycomparingtheresultsofrespective"Pot"boilercleaning SECTIONIIeffortsattheCombustionEngineeringTestFacilityinWindsor,Connecticut.TheparticipatingvendorswereDowChemicalandHalliburtonServices.Inboth"Pot".boilerunitsnumeroustestspecimenswerein-eludedforevaluatingsolventactionondentedtubecrevicesandcorrosioneffectsonthevariousmetalsoftheSt.LuciePlantSteamGenerators.Additionally,anactualsampleofsupportplatefromtheMillstoneUnitg2(asimilarC-EUnit)wasincludedineachrun.Aftercarefulevaluationoftheresults,DowChemicalwasselectedtocontinuetheprogram.WhilebothDowandHalliburtonprocesseshadachievedsomesuccessandshowedstrongpotential,theDowprocesswasdeterminedtobemoreviable,consideringthelimitedamountoftimetocompletedevelopmentoftheprogram(approximatelysix(6)months).IntermediatePhaseTheperiodbetweenPhaseIandPhaseIltestingisbeingusedtoallowadditionalprocessimprovementworkandconsistsofaseriesof"Pot"boilertestsinDowChemicalsLarkinLabsinMidland,Michigan.Basically,ineachsuccessiverunasingleparameteris'ariedtodeterminethemosteffectiveprocess SECTIONIIcombination.TheobjectiveistoraisetheDowprocesstoitshighestpossiblelevelofefficiencypriortothePhaseIItestinginJanuary,l979.PhaseIIIIThisphaseconsistsofperformingatestcleaningonaCombustionEngineering"Model"BoilerintheChattanoogaTestFacility.The"Model"BoilersarelargerthantheNindsorPotBoilersandintermsofdesign,morecloselyrepresentanactualsteamgenerator.ThemodelboilertobecleanedisbeingoperatedtodentwithfaultchemistryintendedtoduplicatetheSt.LucieSteamGeneratorsituationinashortperiodoftime.Theresultsofthisphasewillbestronglyconsideredinafinaldeterminationtoproceedto-wardschemicalcleaningtheSt.LucieUnitglSteamhGenerators.PathII.VibrationAnalsisThevibrationanalysistestprogramisintendedtoacquirebaselinevibrationdatarepresentativeofSt.LuciePlantSteamGeneratorsbeforecleaninganddataon

SECTIONIIwhatisconsideredtobethepost-cleanedgeometry.A.comparisoncanthenbemadetodetermineifincreasedvibrationcharacteristicshaveoccurredasaresultofthechemicalcleaning.Severalrunsarebeingperformedtoconservativelyboundtheactualcleaningoperation.ThistestingisbeingperformedintheCombustionEngineeringWindsorVibrationTestFacility.ThedataanalysisisbeingdirectedandconductedbyCombustionEngineeringSteamGeneratordesignengineersattheChattanoogaFacility.Thebaselinerunandthefirstpostcleanedrunhavebeencompletedandpreliminaryresultsarefavorable.Asecondpostcleanedvibrationrunatamoreconservativelevelisbeingconductedatthistimeandprovisionshavebeenmadeforathirdrun.Theintentofthisaddit-ionaltestingistomakeallowancesforapossiblesecondcleaningoftheSt.LucieSteamGeneratorsatsometimeinthefutureandalsoto"profile"thevibrationcharacter-isticsofC-ESteamGeneratorsofthisdesign.PathIII.EnineerinandSstemInstallation(1)DesignThesystemdesignhasbeendevelopedusingtheC-EEngineeringGroupforinitialdesignworkutilizinginputfromDowChemical.ThefinaldesignandconstructionpackageisbeingdevelopedbytheEbascoOnsiteUnitgl SECTIONIIBackfitGroup.InputandreviewarecontinuouslybeingprovidedbyC-E,DowChemicalandFP8cLtoEbascoasthefinaldesignpackageisbeingassembled.AformalacceptancereviewwillbeconductedbyEbasco,C-E,andDowtoensureallcapabilitiesandconsiderationshavebeenincorporatedbeforesystemconstructionisauthorizedbyFloridaPowerandLight.(2)SystemInstallationThesystemtoapplythecleaningprocesswillbeconstructedbytheonsiteBackfitorganizationconsistingoflaborandfieldsupervisionbyEbascounderthedirectionofFloridaPowerandLightConstructionDepartment.Portionsofthesystemoutsidecontainmentwillbebuiltpriortorefuelingshutdown.Theremainderofthesystem(insidecontainment)willbeinstalledduringtheearlypartoftheoutage.Finalschedulingandworksequencinghavenotbeencompletedatthistime.Theentiresystemf'rperformingchemicalcleaningistemporaryandallportionsofthesysteminsidecontain-mentand/orhavinganyeffectsonplantoperationwillberemoved.aftercleaning.=Nopermanentplantchangesarerequiredtoperformthiscleaning. SECTIONIIPathIV.ProramReviewThepurposeofthisdocumentistocompilethepro-gramintoasinglepackagetoallowFloridaPowerandLighttoconducttheappropriatereviewsandtopro-videtheNuclearRegulatoryCommissionwiththeinformationonwhichFloridaPowerandLighthasbaseditsreview.Itshouldberecognizedthatportionsofthetestprogramhavenotbeencompletedatthistimeandof'ecessity,thisinformationwillbeprovidedlater,whenavailable.(A)FloridaPowerandLightTheprogramisbeingdevelopedinsuchamannerastoreceiveappropriatereviewsbythefollowinggroups:leFloridaPowerandLightCompanyEnvir-onmentalReviewGroup(Non-Rad.EffluentsandWasteDisposal)2.FloridaPowerandLightQualityAssuranceDepartment.St.LuciePlantQualityControlDe-partment.FloridaPowerandLightEngineeringDepartment.

SECTIONII5FPEcL,PowerResourcesDepartment.6~St.LuciePlantFacilityReviewGroup.7.FloridaPowerandLightCompanyNuclearReviewBoard(B)NuclearRegulatoryCommissionl.AmeetingwasheldonAugust31,1978withrepresentativesoftheNuclearRegulatoryCommissiontoinformthemofFloridaPowerandLight'sintenttodevelopaSteamGeneratorChemicalCleaningPro-gramfortheSt.LuciePlant.2.AsecondmeetingwasheldwithrepresentativesoftheNuclearRegulatoryCommissiononOctober26,1978.Forthismeetingmoredetailwasprovidedontheprogram,scheduleandprogress.NuclearRegulatoryCommissionwasalsoinformedofFloridaPowerandLight'sselectionofDowChemicalforcontinuationoftheprogram.3.Thissubmittalisintendedtoprovideadditionalmaterialfortheinformationof'heNuclearRegulatoryICommission.Additionalmeetingsandcorrespondencewillb'eutilizedasnecessarytoensurepropercommuni'cationbetweenFloridaPowerandLightandtheNuclearRegulatoryCommission.

SECTIONIXISOLVENTSFORMULATIONThechemicalformulationsofthevarioussolventsystemsproposedforuseatSt.LucieareproprietaryatTheDowChemicalCompany.Adescriptionofthesolventsystemswillbedisclosedunderprovision10CFR2.790forreviewbytheNuclearRegulatoryCommission(NRC).ThisdisclosureisseparatedfromthissubmittalandcopiesofthedescriptionofthesolventsystemarerequestedtobereturnedtoTheDowChemicalCompanywhennolongerneededforNRCreview. SECTIONIIISOLVENTSSOLVENTHANDLINGThechemicalsusedtoformulatetheproposedsolventsystemsforuseatSt.Luciearebasicallycommonindustrialchemicals.Industrialproceduresandpracticesexistsothatthepersonnelhandlingthesechemicalsandtheenviron-mentinwhichtheyareusedcanbeprotectedfromexcessiveexposure.Asformulatedforusethechemicalsaregreatlydilutedwithwater,thusfurtherminimizingexposure.Furthermore,specifictoxicologicalandenvironmentaldatawillbegeneratedfortheformulationswheredeemednecessary'othtoxicologicalandenvironmentaldataregardingthesechemicalswillbeincorporatedintotheplanningforandactualoperationsemployedfortheSt.LucieSteamGeneratorCleaning.SOLVENTFLAMMABILITYThesolventsproposedforuseintheSt.Iuciecleaningareallwaterbasedandasaresultnotspontaneously:.flammableatconditionsanticipatedduringuseorindisposal' SECTIONIIISOLVENTTHERMALDECOMPOSITIONBoththeoreticalandlaboratorytestsindicatethatthetypesofsolventsproposedforuseatSt.Luciethermallydecomposeatelevatedtemperaturesasfollows:VaporMajor--ammoniaandcarbondioxideMinor--acetaldehyde,ethane,ethylene,propane,propyleneandmethane.LiquidMajor--carboxylicacidsaltsandinorganicsulfatesaltsoMinor--mixtureof'ingleaminessuchasdimethylamines,trimethylamines,etc.Prolongedheatingwillcausedecompositiontocarbondioxideandammonia.Becauseoftherinsingoperationplannedaftertheclean-ingprocessonlyminortracesofresidualsolventwillbeexpectedinthegenerators.

SECTIONIIISOLVENTQUALIFICATIONPOTANDMODELBOILERTESTINGPROGRAMTheCombustionEngineeringWindsor,Connecticut,PotBoilerFacilitywasusedforsolventscreening.Thosetestshavebeencompleted,andtheresultingtestspeci-Imensarecurrentlyinanalysis.TheCombustionEngineeringChattanooga,Tennessee,ModelBoilerFacilitywillbeusedfortheprincipalconfirmatorysolventtest.Thatfacilityisnowbeingpreparedforthetestbyoperationunderfaultedchemistryconditionsintendedtogeneratesupport-platedentingsimilartothatobservedatSt.Lucie.Itisexpectedthatthemodelboilertestwilltakeplaceearlyin1979.Thisreportsectionsummarizesthe"PotBoiler"resultsavailabletodate,anddescribesthetestplannedforthemodelboiler.TheWindsor"PotBoiler"Facility,isahighlyflexibletestloopcapableofheating(amongothertests)four(0)tube"potboilers'lwhichcanbeusedtosimulatetheeffectsoffaultedchemistryoperation.Twosuch"potboilers"wereselectedforthescreen'ingtestsinthisprogram.Thetwo"pots"hadbhenoperatedonfaulted(i.e.,highchloride,pre-packedcreviceconditions)volatilechemistry.These SECTIONIII"pots"displayedseveraldentindicationseach,asdeter-minedbyECTmeasurement.The"pots"weremodifiedforthetestbyaddingaloosesludgeinordertobettersimulatethesludgecompositionfoundatthepreceedingSt.Lucieinspection;however,aboutonehalfofthesludgeinthe"pots"wasbakedonduringthecourseofthepreceedinghigh-temperatureoperation.Inaddition,sufficientInconelsurfacewasaddedtosimulatetheoverallInconelsurfaceareatovolumeratioofSt.Lucie,sinceitwasbelievedthatthisparametermightbesignificanttotheperformanceofthesolventinhibitors.Anattachedphotographshowsthe"pot"internalsaspreparedforcleaning.ItcanbeseentQatavarietyofmetallurgicalspecimens,includingreversedents,werehunginthe"pot"tomeasurecorrosionratesonrepresenta-tivematerials.ApieceoftheMillstoneIIsupportplatewasalsoincludedtoallowcomparisonoffield-grownmagnetitedentingdepositstothelaboratory-grownreversedentsandthedentsgrownduring"pot"operation.The"pots"werethencleanedbythesolventvendorper-sonnelusingtheirprescribedsolventformulationsandpro-cedures.CombustionEngineeringpersonnelwerepresentatalltimestomonitortestproceduresandoperateequipmentwherenecessary.FloridaPowerandLightpersonnelwerepresentforalloperationsjudgedtobeimportanttotest SECTIONIIIorfieldsuccess.Followingcleaning,the"pots"wereopenedandexaminedbyallparties.Thereafter,theywerereturnedtotheloopforoperationathightemperature(simulatingSt.Luciesteamconditions)tocheckforpossiblesolventhangovereffects.Attheconclusionofhangovertesting,thepotswereopenedanddisassembledforcompleteexamination.Basedonthesetestsandotherexperimentalresultsmadeavailabletoit,FloridaPowerandLightselectedDowChemicalforfurthertesting.Therefore,althoughtheresultswerepromisingonbothvendors,thebalanceofthisdiscussionwilladdressonlytheDowresults.TheprincipalresultsavailabletodateontheDow"pot"canbesummarizedasfollows:l.Thecorrosionrateswere.acceptable,andinparti-cularwerewithinthecriterionforcarbonsteelcorrosionbeingtestedbythevibrationprogram.2.Thesludgeremovalwasgood,withonlyasmallfractionofaninchofmaterialleftonthebottomofthe"pot".3.TherewasnoobservabledegradationoftheInconeltubes,eitherbyvisualorECTindications..TheMillstonespecimenwascompletelycleaned.5.Thereversedentsand"potboiler"U-tubedentswereallcleanedtosomeextent,rangingfromcompletecleaningtoroughlyhalfcleaned. SECTIONIII6.Therewerenoobservablehangovereffects.Withinthelimitsoftheprogramstatus,thesearecon-sideredtobeacceptableresultsinallcases.Thelimitedcleaningofsomedentsisattributedtotherelativelypoorsolventcirculationofthe"potboilers";goodsolventcir-culationisanimportantcontributortodeepcrevicepene-trationbythe.solventpackage.ThisconclusionwillbetestedintheChattanoogamodelboiler,wherefluidcir-culationismuchclosertothatexpectedinatypicalSteamGenerator.TheChattanoogamodelboilertestisnowscheduledforJanuary,1979,althoughpreparationshavebeenunderwaysinceSeptember,1978.Inparticular,amodelboilerwasfabri-catedhaving16heatedtubesinageometrysimulatingSt.Lucie(seeattachedFigureXII-1).AsupportplatesimulatingSt.Luciewasincluded,withtheintentionofgeneratingseveraldentsforcleaning(seeattachedphoto).DentingisbeingachievedbyinjectionofactualSt.LucieseawaterandsludgesimulatingtheSt.Luciesludgecom-position..AllvolatiletreatmentisbeingmaintainedusingAmerzine(catalizedhydrazine),whichistheSt.Lucievolatileadditive. SECTIONIIIItisintendedthattheChattanoogatestsimulatetheSt.Luciefieldoperationsascloselyaspractical.Thesolventcirculationequipment,therefore,willbescaledandusedinamannercalculatedtocloselysimulatetheconditionsexpectedinthegenerators.Theresultsofthemodelboilertestwillbereportedwhenthetesthasbeencompleted.I

COMBUSTIONENGINEERING)INC.WINDSORTESTFACILITYPOTBOILERThisunitwasoneoftwousedforFloridaPowerandLightCompanySolventVendorSelectionRuns.Phototakenpriortocleaning.0~]g),$KUnitwasoperatedwithAVTFaultChemistrytofoulanddentforSolventCleaningTest.NotenumerouscorrosionspecimenstoevaluatesolventeffectsonSteamGeneratormaterials. SECTIONIIICOMBUSTIONENGINEERING,,INC.CHATTANOOGATESTFACILITYMODELBOILERThisunitwillbeusedforPhaseIISolventQualificationTesting.Phototakenduringfabrication.OCT~IK>%aNOTE"Egg-Crate"supportanddrilledsolidsupportplate.

I~I<<I<<~I~<<hv<<wvt<<<<<<t<<<<'4.-WCf'+.'.~~+IIorI00<<RHAOOHHIR(54HSPH'dWWC)HO(IIOF<eV&uMblIOrn~W4<<~<<<<~CL~~L~lf.8IIIII1I<<I<<JtOA<<ICCu.d9ggg~cr'M~4<<LCCCg<<IC.nTIIAllCAI~~ICI~<<~LAClrl)TV8ESHEETcISAacrIcrrmac~rawlcg.ICg<<~glrsvg;<<vr<<I<<lemi:wc.~y~CVy;lll~q>-..grrIrrrl,r".~lMM-E@8033-2<<4"~~<<<<~~<<~<<1~ SECTIONIIICHEMICALCLEANINGPROCESSDESCRIPTION1.0CoerRemovalNC-00Thissolventwi.'llbemixedattheSt.LuciePlantsitepriortouse.Thisentailsacquisitionofdemineralizedwaterandadditionofchemicals.Themixingshouldtake8-10hoursforcompletion,1.1.InjectionofNC-300---2hours.1.2Bulkcirculationatambienttemperatureabout10hours.13Analysisofcopperwillbeusedtomonitortheprocess.1.4Drainsolvent--2hours.2.0WaterRinse2.1Accumulate70,000gallonsofdemineralizedwaterandinjectintotheSteamGenerator---2hours.2.2Circulaterinsewateranddrain---2$hours'OTE:Timesnotedareestimatesusedforplanningpurposes. SECTIONIII3.0SludeSolventNS-Thebulkofthissolventwillarriveonsiteinaliquidconcentratedform.Theconcentratewillbeaddedtowater.AliquidchemicalwillbeaddedwithmixingtocomplywithNS-5specifications.ThismixingcanbedoneduringtheNC-300stage.3.1InjectNS-5into'theSteamGenerators---2hours.3.2'eginbulkcirculationoftheSteamGeneratorsandheatingto190F.Theheatingshouldtake0hours.Thisstagewillrunapproximately24hoursafterreachingtemperature.3.3Ironanalysishourlybyatomicabsorptiori.3.0Norethanoneironsludgestepmaybeneeded.Additionalstageswouldfollowthesameprocedure.3.5Begincoolingsolventfornextstage---3hours.3.6Drainsystemwithnitrogen---2hours.

SECTIONIII4.0ChemicalRinseNR-100ThisstagecanbemixedduringtheNS-5stage.Watermixedwithchemicals.4.1InjectNR-3.00---2hours.4.2CirculateNR-100---1houranddrain--2hours.4.3Analysisrequired'isironconcentrationbyatomicabsorptionofthedrainsample.5.0CoerRemovalSteNC-005.1Mixchemicalsinabout10hours.5.2InjectNC-300---2hours.5.3Bulkcirculateatambienttemperaturefor10hoursanddrain---2hours.5.0Analysisofcopperwillbeusedtomonitortheprocess.5.5Anadditionalcopperstagedependsonanalysis.tran-14 SECTIONIII6.0DentSolvent~6.1Repeatstep3.0(sludgesolventNS-5).6.2InjectNS-5--2hours.6.3Heatsolventto220F.---6hours.6.0ThisstagewillremainintheSteamGeneratorsfor180hoursduringwhichtimethemechanicalagitationviaintermittentbulkcirculationandoscillationwillbeincorporated."ThisstagemaybesubjecttochangependingDowandCombustionEngineering"potboiler"testresults.6.5Analysisofironbyatomicabsorption.6.6CoolNS-$---6hoursanddrain--'-2hours.iver-15 SECTIONIII7.0NN-1007.1Repeatsteps0.0thru0.2.8.0~NC-008.1Mixhalfstrengthsolution.8.2InjectNC-300--2hours.8.3Bulkcirculationforapproximately5hours.(Pendingcopperanalysis.)8.4Drain-2hours.9.0NR-1009.1Repeatsteps4.0thru4.2.9.2MonitorpHofsolution.10.0Passivation10.1Drychemicalsareaddedtodemineralizedwater,andmixed.10.2Injectpassivation--2hourswithslightheating'(<120F)10.3Bulkcirculate--$houranddrain2hours.tran-16 SECTIONIII11.0WaterRinse11.1FillSteamGeneratorscompletelyfullwithwater(140,000gallons)inapproximately0hours.11.2Circulatefor2hours.11.3Checkdrainsampleconductivity."12.0WaterRinse"MayneedsecondwaterrinsependingcriteriaestablishedforeffluentofStep11.0. SECTIONIVCORROSIONCONSIDERATIONS'A)ThechemicalsolventsproposedforuseintheSt.LuciecleaningwillbebatchmixedaccordingtospecificprocedurespriortoinjectionintotheSteamGeneratorasaprimarycontroltoassureIproperconcentrationisattained.Asecondlevelassurancewillbeattainedthroughchemicalanalysisofthesolventsafterthemixingbutpriortoin-jectionintotheSt.LucieSteamGenerator.B)Duringtheactualcleaningoperationthechemicalparametersofconcernforthatspecificsolvent(strength,temperature,dissolvedspecies,pH,etc.)willbemonitoredtofollowtheprogressofthecleaningoperationandthuscontroltheoperation.Asignificantdatabasehasbeengeneratedduringthedevelopmentaltestingoftheproposedcleaningprocesswhichindicatesthatthechemistryispredictableduringuse.Furthermore,thesolventsemployedarebufferedsoupsets.inchemistryarenotexpectedastheyinteractwiththeanticipatedSteamGeneratordeposits. SECTIONIVC)ThephysicalsystemthatwillbeemployedtoapplythesolventstotheSt.LucieSteamGeneratorswillbedesignedsothatfluidvelocitiesinthetemporarysystemandtheSteamGeneratorswillbebelowthoseratesacceptablebasedonthecorrosionresultsattainedforsimilarmaterialstestedinadynamiccorrosiontestsystemsimulatingthecleaningprocess')ThecleaningprocessproposedforuseatSt.Lucieincorporatestheuseofanexternalheatingandcoolingsystemwhichplacesthesolvent'stemper-atureunderthepositivecontroloftheoperators.Furthermore,theheatingandcoolingsystemisdesignedforgradualtemperaturechanges,thuslimitingtopossibilityofupsetsleadingtorapidoveralltemperaturechangesduringthosephasesof'thecleaningprocesswhereheatingand/orcoolingarerequired.E)Thenatureofthecleaningoperationaimedatcrevicecleaningdictatesthattimeisthefactorwhichwillbeusedtodeterminetheendpointoftheoperation.Thespecifictimeforthisoperationwillbebasedonratesfoundtobesufficientforthesatisfactorycleaningoflaboratorycrevicedeposits.ThispredeterminedIV-2

SECTIONIVtimelimitforsolventcontractwillcontroltheendpointofthisphaseofthecleaningoperation.F)Bynaturechemicalsolutionscontainingironand/orcoppercanbecorrosivetometalsduringstorage.ThedesignofwastehandlingsystemsforthespentsolventsresultingfromtheproposedSt.Luciecleaningwilltakethesecorrosivemechanismsintoaccount.IV-3 SECTIONIVRESIDUALEFFECTSOnepotentialconcerninachemicalcleaningisthatsmallamountsof'hesolventswillbeleftbehindincrevices,andthatduringthereturntopoweroperation,thismaterialwillbeconvertedbyhightemperatureintoaggressivecom-pounds.Sucheffectsarecalledresidualeffects,orhang-overeffects.Thereareatleasttwo"reasonsthathangovereffectsareunlikelyintheprocessproposedatSt.Lucienl)Thereareseveralcirculatedrinsestepsofvarioustypesfollowingthepresenceofanycompoundswhichmightbesubjecttohangoverbehavior.Thus,theconcentrationofsuchcompoundsincreviceswillbeverylow.2)ExtensiveDowtestingindicatesthatthethermaldecompositionproductsofthepresentlyproposedsolventsarenot,infact,aggressive.Nevertheless,sincehangovereffectscannotbecompletelyruledoutontheoreticalgrounds,itwasdecidedtotestspecificallytheproposedsolventsforhangovereffects.ThistestingwasprincipallyachievedintheWindsorpotboilerruns.There,attheconclusionofthecleaningrun,IV-4

SECTIONIVthepotboilerwasre-assembledandreturnedtofull-pressureoperation,thussimulatingtheactualreturntopoweroper-ationatSt.Luciefollowingcleaning.Afterseveralweeksofsimulatedpoweroperation,thepotwasdisassembled.andcheckedcarefullyforanysignofhangovereffects.Avarietyofexaminationtechniqueswereusedtodetectanysucheffects:l)Detailedvisualexaminationofallsurfacesbypersonnelfamiliarwithvariouscorrosionevalua-tiontechniques.2)Macrophotographywithcomparisiontopre-hangoverphotographs.3)Eddy-currentexaminationoftheheatedU-tubes.4)Destructivemetallographicexaminationofrepresenta-tivesamplesof'nconelandotherimportantmaterials.Possiblehangovereffectsspecificallyaddressedintheseexaminationswere')Changesincharacterizedpitsinpre-pittedInconelsamples(i.e.,changesindicatingtransitionfrompassivetoactivecorrosionstatus).2)Inconelcrackingorinter-granularattack.3)Hydrogenembrittlement.IV-5 SECTIONIV0)Cracking,inter-granularattack,orlocalizedcorrosionof'arbonorlowalloysteels,especiallyinheat-affectedzonesorweldareas.ThevisualandECTexaminationshavebeencompleted,andshownohangovereffects.Themetallographicexaminationsarestillinprocess,buttodate,shownoevidenceofhang-overeffects.Ifsucheffectsarefoundinsubsequenttesting,theywillbeconsideredinthecontinuingevaluationofthecleaningprogram.Forthepresent,however,itisconcludedthathangovereffectsarenotaconcernintheprocesspro-posedforSt.Iucie. SECTIONIVCORROSIONDATAThefollowingTableIV-1containsalistingofthecorrosionsamplesandtheircorrosionratesincludedintheDowChemicalNindsorPhaseISolventTestingRun.Thetablealsoshowstherelativelocationofeachduringthecleaningoperation.Thecorrosionratesareverylowforallmaterialsofconcern.ThehighestcorrosionratesobservedwereonA508carbonsteel.ByreferringtoFigureIV-la,itcanbeseenthatthisalloyisusediorthetubesheetsandcertainpenetrations,noneofwhichrepresentcriticaltolerancesandarequitecapableofaccommodatingsuchcorrosionrates.Primarilybecauseofvibrationconsiderations,thealloy1010carbonsteelusedforthe"Egg-Crate"stripsisofspecialinterest.Thecorrosionratesshowninthetableforthisalloyarebeingconservativelyboundedbythevibrationtestprogram.CorrosionrateswillbemeasuredintheModelBoilerPhaseIITestRuninChattanoogainJanuary,1979andagainduringtheactualcleaningoperation.IV-7 CORROSIONSPECIMENSTABLEIV-1OOWSPECIMENSANOWEIGHTLOSSESMATERIALMILSCORROSIONDURINGCLEANINGVAPORPHASEBULKSOLUTIONSLUDGEAREA409StainlessSteel405StainlessSteelA508SteelA533Steel1010CarbonSteelInconel(annealed)Inconel(sensitized)CLEANINGEFFECTSSPECIMENS0.0040.0051.5460.2310.201<0.001<0.0010.0410.00512.1631.6862.6710.0010.0020.0340.0056.7340.6281.9780.0010.003SPECIMENVAPORPHASEBULKSOLUTIONSLUDGEAREACAPSULEGROWNREVERSEDENTSMILLSTONEIISUPPORTPLATESEGMENTSTEAMDRYERSEGMENTSSEPARATORCLAMPSEGMENTSINCONEL/CARBONSTEELU-BENDCOUPLESPRE-PITTEDINCONELTUBINGNUTANDBOLTCOUPONSX'XSUPPORTCASTINGS(SA216,GRADEWCB)STRESSEDWELDSAMPLEHEATAFFECTEDZONESAMPLEIV-8 SECTIONIVSTEAMGENERATORMATERIALSAscanbeseenfromFigureIV-la,theSteamGeneratorisconstructedfromavarietyofcarbonandlowalloysteels,togetherwiththeInconel600tubing.Forthepurposesofcleaningcorrosionloss,thecriticalcomponentsarethe,"Egg-Crate"supportsandthesupportplates,bothof'hicharefabricatedofmaterialequivalentto1010carbonsteel.Therefore,whileawidevarietyofotherspecimenshavebeencheckedforcorrosioneffects,theprincipalfocusof'estinghasbeenthe1010carbonsteel.Bylimitingthecorrosionlossofthismaterialtoavaluequalifiedbythevibrationtestingprogram,acceptablepost-cleaningperformanceisassured. ~~Rf~ColL~i

SECTIONVENGINEERING SECTIONVST.IUCIEISECONDARYSIDESTEAMGENERATORCHEMICALCLEANINGUSAGEDESCRIPTION1.0CHEMICALCLEANINGFACILITYDESIGNThechemicalcleaningfacilityconsistsofthreeprincipalsub-systemsasfollows'.Themajorsystemincludestemporarypipingandcomponentsrequiredtoinject,heat,recirculate,oscillate,monitor,drainandflushsolvent(s)intheSteamGenerators.2.Thesecondsystemincludes.temporarypiping,componentsand15storagetanks,withacombinedcapacityof300,000gallons,andisrequiredformixingandstorageofsolvents.3.Thethirdsystemincludestheexi'stingSteamGeneratorBlowdownSystem(SGBS)processstream.TheCoppersolventwastewillbestoredintheavailableSGBTFtankage(3-180,000gallontanks)andprocessedthroughtheexistingBlowdownDeminerali-zationSystem. SECTION72.0CLEANINGFACILITY2.1Themajorsystemisdesignedforamaximumflowcapacityof3500gallonsperminute;theactualflowratewillbedeterminedbytestsnowinprogress,SuctionwillbefromthetwohandholesofeachSteamGenerator,throughastrainerandthentothesuctionsideofthepump.Thedischargeofthepumpgoes>witha6"sidestream~throughasetoftemporaryheatexchangers(designedforsteamheatingandseawatercooling).Two(2)100/apumpsandheatexchangersaredesignedintothesystemforreliability.Associatedinstrumentationandsubloopsnearthepumpsandheatexchangerswillbeasfollowsi1.Pressureindicator2.Temperature3~Samplecooler'ormonitoringsystemchemistryCouponsamplevessel(corrosionspecimens)Thedischargelineoutoftheheatexchangerswillteeinto2lines,onetoeachSteamGeneratorwithV-2

SECTIONVinlinestrainers.ThedischargelinetotheSteamGeneratorwillteeintotwo(2)-8"lineswithisolationvalves.The8"lineswillenterthroughaspecialmanwayplateontheupperportionoftheSteamGenerator.One8"linewillgotothecandeckmanwayandfeedtheexistingdowncomersplacingsolventontheoutsideoftheinnershroudnearthefeedwaterringheader.Theother8"linewillteeintoseveralsmallerlinesthatwillfeeddownthroughtoanareaaroundthedrilledsupportplates.Flowthroughthispathwillbecalledbulkcirculationandflowthroughtheother8"linewill-establishtheoscillationofthisprocess.LiquidlevelinthesecondarysideSteamGeneratorwillbemonitoredbyaleveltransmitterwithre-motereadoutatthecontrolstation.Themainsteamlineswillbepinnedandfloodedandthewaterlevelmonitoredtopreventsolventvaporentry.Amethodforbackflushingstagnantlinesoff'heSteamGeneratorsfollowingthechemicalcleaningwillbeincorporatedtopreventunmonitoredsolventaction.Theprimarysidecoolantlines SECTIONVintotheSteamGeneratorswillbedammed,withthemanwaysopen,forperiodiccheckstoverifynosolventleakageisoccurring.Thefeedwaterlines,ringheadersandannulusflowareawillbeflushedbetweenchemicalstepswithdemineralizedwatersuppliedbytheauxiliaryfeedpumps.Anitrogenblanketintheupperportionof'heSteamGeneratorwillminimizesolventvaporcondensationonupperportionmetalandassistthedrainingaswellassupplementtherequiredNPSHofthepumps.Amalgamatedintothedesignwillbeamethodtoflushthetemporarypipingforremovalofdeleteriousmaterialandtotesttheintegrityofthetemporarysystem.2.2Themixingandstoragetanksystemisbeingdesignedforaflowof1000gpm.Specificationsforthe SECTIONVpumpwillmeetthecriteriaestablishedformaximummixingandminimuminjectiontime.Additionalequipmentbeingconsideredtoenhancemixingandminimizetimeare(1)educatorunitsonthemixingpumps,(2)hopper/conveyor,and(3)atemporarytenttoprotectthechemicalsandsolventsfromtheenvironmentalelements.Tankswillbearrangedandisolatedtopreventthepossibilityofcombiningsolventsystems.Mixingfacilityareasandthecontainmentwillhaveadequatesafetyshowers,etc.f'rpersonnelprotection.V-5/ SECTIONVSTEAMGENERATORCHEMICALCLEANINGPROCESSSYSTEMDESCRIPTIONDES1GNBASISTheSteamGeneratorChemicalCleaningProcessSystemisdesignedtoia)Provideameansofsafelymixingthebulkquan-titiesofchemicalsrequiredforthecleaningoperationandinjectingthemixedsolutionintotheSteamGenerators.b)ProvideameansofcirculatingthechemicalsolventsolutionsthroughtheSteamGeneratorsatsufficientvelocitiestoenhancechemicalsolventreactionandtomaintaintherequiredchemicalconcentrationsandtemperatures.c)Provideameansofheatingandcoolingboththecleaningsolutionvolumes,approximately70,000gallonsperstep,andthemassofbothSteamGenerators.d)Providetwo(2)independentmotivemeansofremovingachemicalsolventsolutionvolumefromthegeneratorsandstoringsuchavolumeofsolventinholdingtanks'-6 SECTIONV'SYSTEMDESCRIPTIONThemajoractivecomponentsofthesystemconsistsoftwo(2)100focapacitycirculationpumps,three(3)'hemicalmix-transferpumpsandmechanizedbulkchemicalhandlingequipment.Theremainderofthesystemconsistsoftwo(2)100/acapacityheatexchangers,chemicalmix'ingtanks,'pentchemicalholdingtanks,pneumaticoperatedcontrolvalvesandthepipingsystem.Refertothesystemflowdiagramforadditionalinsightintothesystem.Thecirculationpumpsareelectricallydrivenhighvolume,lowhead,singlestage,centrifugalpumpsratedat3500gpmat190foothead.Thepumpsareconstructedsuchthatallwettedpartsarestainlesssteel;ie,caststainlessASTMA296,GrCF-8MandwroughtstainlessASTMA276,Type316.Thepumpsareequippedwithmechanicalseals.Asshownbytheattachedflowdiagramthepumpsareinstalledinparallelsoastoprovidetwo(2)100foin-linecapacitypumpcapability.Thepumpsaresuppliedwith480Vthreephaseelectricalpowerfromthesit'econstructionsub-stationg2whichisconnected'throughastep-downtransformerfromFloridaPowerandLight'slocal13.2KVdistributionlines.Alocalstop/startcontrolstationwillbeprovidedforpumpoperation.V-7 SECTIONVThesystemheatexchangersareeach100focapacityunitsoftheshellandtubedesign.Xtisintendedtouseoneheatexchangerforheatingandtheotherforcooling.Fortheheatingmodeofoperation,200psisaturatedsteamsuppliedbythesiteauxiliaryboilerwillbeused.Condensatebuild-upintheshelloftheheatexchangerwillbecontrolledmanuallybythrottlingtheshelldrainvalve.Forthecoolingmodeofoperationlowpressuresaltwaterwillbeused.Thiswaterwillbesuppliedbyatemporarylineconnectedtotheplantintakecoolingwatersystem'ssaltwaterstrainerblow-downline.Underthismethod,theonlyalterationtotheintakecoolingwatersystemwillbeacontinuousblow-Idownofthestrainers.Thesystemprovidestwo(2)basicflowpathsforcir-culationofthesolventsolutions.Theseareclosedcirculationthrougheachgeneratorsimultaneouslyandacyclicflowpathfromonegeneratortotheother,here-afterreferredtoasthe"yo-yo"mode.Eachofthetwo(2)flowpathscanbeusedtoenhancefluidmovementinthegenerators.Changesintheflowpathsareaccomplishedusingthepneumaticoperatedcontrolvalves.Basically,the"yo-yo"modeofoperationtransferssolventsolutionalternatelyfromoneSteamGeneratortotheV-8

SECTIONVother.FluidflowwillexitoneSteamGeneratorviathelowerhandholesandenterthesecondSteamGeneratorthrutheuppermanwaywithflowdirectedthruthenormalfeed-waterflowpathoutsidethewrapper.Duringthisoperation,thetubebundlesinbothSteamGeneratorsremainfloodedatalltimes.Thatisonlya"slosh"volume(approximately10,000gallons)willbetransferred.Hence,thecycletimeswillbeontheorderof2$to5minutesdependingupontheflowrate.Underthismethod,fluidmovementbythesupportplatestobecleanedwillbeinboththeupanddowndirection.Underthecirculationmodeofoperation,bothSteamGeneratorsarecirculatedsimultaneouslywithfluidexitingfrombothlowerhandholeconnections"andreturningthroughtheuppermanwayconnections.Thedischargeflowisdirectedtotheareaofthesupportplatesinsidethefeedwrapper.Withacirculationrateof3,500gpmforeachgenerator,theturnoverofthesolventsolutionwillbeapproximatelyeverytenminutes.Thiscirculationmodeprovidesthesamefluidmovementvelocityasthe"yo-yo"mode,butonlyinonedirection.Thechemicalmixingtanksandthespentchemicalholdingtanksarerectangular,skidmounted,unlined,carbonsteelconstructed,portabletanks,eachratedat20,000gallonscapacity.EachtankisequippedwithnozzleconnectionsforV-9 SECTIONVfilling,circulatingandemptyingthetanks.Levelindicationineachtankwillbedonebymanualgauging.Thechemicalmix/transferpumpsareelectricallydriven,singlestage,centrifugalpumpsratedat1000gpmat170foothead.Thepumpsareofsimilarconstructionasthemaincirculationpumps~thatis,allwettedpartsarestainlesssteelandequippedwithmechanicalseals.Thesepumpswillalsobesuppliedwithpowerfromthesiteconstructionsub-stationg2.Alocalstop/startcontrolstationwillbeprovidedforeachpump.Thecontrolvalvesarepneumaticallyoperatedbutterflyvalves.Thevalveswillprimarilybeusedinthefullopenorfullclosedmodeofoperationwithlimitedthrottling.Thesevalvesareconstructedofstainlesssteelwithteflonstemsealsandteflonseats.Forthechemicalmixingandtransfertanks,manuallyoperatedbutterflyvalveswillbeusedwithallthewettedpartstefloncoated.Eachgeneratorhasatemporary2-inchlineforbothventingandpressurization'itrogenwillbeusedtopressurizethegeneratorsduringthechemicalcleaningstepstoprovideaninertcovergasand.tosatisfyNPSHrequirementsofthecirculationpumps.Thisnitrogensourceofenergycanalsobeusedtoprovidethemotiveforcetodrainthegeneratorsbygravity.ThesourceofV-10 SECTIONVnitrogenwillbefromtheplantbulknitrogenstoragesystem.MaterialandSolventComatabilitPipingmaterialwillbeprimarilystandardweightcarbonsteelwithstainlesssteelsleevesortargetplatesinhighvelocityareas.Dowwillreviewselectedconstruc-tionmaterialsforusewiththeirproprietarysolvents.Thebutterflycontrolvalveswillhaveallwettedpartsconstructedofstainlesssteelwithteflonseatsandseals.

SECTIONVISYSTEMINSTALLATIONThetemporarysystemtoapplythecleaningprocesswillbeconstructedbytheFloridaPowerandLight/EbascoBackfitConstructionGroup.ConstructionisintendedtostartaboutMarch1,1979ontheportionstobebuiltoutsidetheReactorContainmentBuilding.InstallationoftheremainingpartsofthesysteminsidetheReactorContainmentBuildingwillbecompletedafterReactorShutdownforRefuelingshortlyafterApril1,1979.Theconstructioneffortwillconsist,ofactivitiessuchas:1)Installationofapproximately3000feetofschedule40carbonsteelpiperanginginsizefromthe,12"mainheaderdownto0"linesconnect-ingthetemporarystoragetanks.2)Fittingandweldingofalltheelbows,valves,andfittingsassociatedwiththepipinginIteml.3)Setting15-20,000gallontemporarystorageandbatchingtanksinplace.

SECTIONVI0)Settingtwo(2)3500gpmandthree(3)1000gpmpumpsinplaceandprovidingtemporaryelectricalpower.5)Settingtwo(2)0'15'eatexchangersinplace,pipingupsteamheatingfromtheauxiliaryboilerandcoolingwaterfromtheIntakeCoolingWaterSystem.6)Instrumentationforflows,pressures,levels,etc.7)Pneumaticcontrolsystemforapproximatelytwelve(12)10"controlvalves.8)FabricatingandinstallingspecialfittingsfortheSteamGeneratorManwaysforsupplyandreturnlines.9)Drippan's,spillprotection,splashguards,safetyIshowers,eyewash,etc.10)Pipeinsulationandthermalguards.ll)Removaloftheentiresystemaftercompletionofthetcleaning.Precautionswillbetaken"toensurethatthesystemiscapableof'heproperlevelsofprotectionforbothpersonnelandequipment.Preventionofpersonnelinjuryandequipmentdamagewillbeaparamountconsiderationthrough-outthesystemconstructionandoperation.VI-2

SECTIONVIRadiationExosureEstimatesThefollowingfigure(VI-2)showstheradiationlevelsfoundattheApril,1978Refueling.DuringtheNovember,1978Shutdownsimilarradiationlevelswereseen.BasedonthisandotherRadiationSurveyinformation,theradiationexposuresexpectedtobeincurredduringtheconstructionandoperationofthecleaningsystemwereestimated.Anevaluationoftheactivitiesplannedandthenecessityforproximitytovariousradiationlevelshasshownthatthemajorityofthepersonnelexposurewillbeinconjunctionwiththeconstructionofthetemporarysysteminsidecontainment.RadiationExosureAnalsis-Assumtions1)ThegeneralareaaroundtheSteamGeneratoraveragesapproximately50mrem/hr.2)Thegeneralareaintheupper(Separator)sectionoftheSteamGeneratorisapproximately250mrem/hr.3)Twenty-five(25)menspendan8hourshifteachworkinginsidecontainmentfor15daysand50foof'heirtimeisinthegeneralareaoftheSteamGenerators.0)Six(6)menwork6hourseachforfour(0)daysintheupperpartoftheSteamGenerators.VI-3

SECTIONVI2menx8hrsdax1dsx0mrhr275Man-remB)6menx6hrs.eachx0daysx250mr/hr.36Man-remC)SteamGeneratorInspections(PreandPost)BasedonHistoricalData5menx000mrem/inspectionx2Inspections~Ka'n-remD)EstimatedExposurefromOperationsandMisc.Activities5Man-remTotalEstimate=;120Man-remInFloridaPowerandLight'scontinuingcommitmenttoALARA,maximumeffortswillbeexpendedtoreducethepersonnelexposuretothelowestpossiblelevelsandstillaccomplishthecleaningtask.VI-4 15--20,000Gal./Ea.Batchingand'StorageTanksMixingPumps--1000Gm'tmGenBlowdownTreatmentFacility~~I'IIqtAfaataII~HCC--r-a}-<--SI--I-ir-I--aIIII---r-JJPLIJeOIIIILJqO>>lLJlaI)LIIJ~IIJJIJIJ4JJLJJLJ~JII'-r--ILLI~jIlre~tlat~0+ee~Isrtsaccrar1olrltLoa~~~~~~~~aev~SNRtEEate~~'Rvace>>area~I"'<-I1I5OI4I/IIII,'(y'at~I~O4~~O~O~OO~O~ee4~~Oe~O~O~45>>LA'C~~O4~~O~~~~~1I~aKtrar~trr>>tav11C~rI'1rIrt1I'1~q~Ll.5L~~1IrI/P.~~I~teathat~1Ooeoooeooa~I~ray~ts'cr~tv~IIact-H~r~>>~'aeI~soaleICIAHeatExchangers2--0'l5'I~III.5~L~.er--{-~g~Qse~IrlL1(LIJve~5},IJIsir-~e5>>vPrIIILLILa.I~Ia~~~~~~Circulation.Pumps2--3500Gpm'tCe1IIIIIII}I>>tavelel~IItta1~'II>>srtIE>>arI-triaPIANACIORAtAILlta4V~COOts>>IIEAcroreAAl4~Cl~asv~~OstuvvveI1>>r~ea>>r>>1$CEP>>SAttiLOta>>oatc>>vu>>Eaaat\tstts'ItartoaCe>>OS>>SleeIORQOI!6IALI5ICCA.I1.oeaee'reri~~~sgjIl;IverZIorrapl~Lptr~ripeIK11%trtXIII~EtEalal~~eva1C~E>>Item'lte>>A>>lW>>rllLttttr>>EaegI/lr>>t~tav>>IttI~ttcarteIt>>ates\Pt.I0$rrtteat~AII~I~toll>>leorertaI~~.,JtIlwrtavrvvI&gp,,5"'III5II1\,>>L~eetc~>>A~~~vtI>>cattvCataPIk'ICPESvaaaaaace>>r.cAI>>Iev~4v~LCCtvvcll~Paar~wetkrt~Ig'pw>>'e>>eve>>~IKE~~}a>>>>tvvv5'1aKrtllPv>>EL~~%ratEVEwusatI~vs>>tuelta.~ttsIIIIIII}e\~IEEEvalPI/IL'jrOLrar>>4aItla1>>t.55~sr5>>PE'vsLrtt>>511Jv'ZS-S,-'--EICP~ra11It\VQIA~rattv}Itl~LICt41>>1,tr>>tSVEt>>tto>>EI1>>lltaoWCtC>>'rlFPL-PSLUnitglRlfaIACIOCRttRvr-.5~~~.LocationoiPMajorS/GCCComponentsFigureVt-1

FPEL-St.LucieIRadiationSurveyDataForSteamGeneratorsABBFigureVI-2:GeneralFieldAbove.CanDeck-20-40t1R!jOL!GeneralFieldAbove:,Tube8undle-1000HROpening-200tlRContactontubes-IIIIli/;:4EGeneralFieldAbove~~jFeedRing-100NR!tInsideHandHoles-6000to8000HRIIsl'ILI~I~lCone/BaffleJunctionUnderFeedRing-1000t1R,llf""'I!'I'i}ijja('Iif<0contactonTubeSheet-6000t<R

SECTIONVIISYSTEMOPERATIONI.PRE-OPERATIONALTESTINGA)TheSteamGeneratorChemicalCleaningSystemwillbethoroughlyflushedinaccordancewithsiteprocedurestoensurethatthecleanlinessrequirementsoftheSteamGeneratorsaremaintained.B)Thesystemwillbehydrostaticallytestedtolgtimesthemaximumoperatingpressuretodemonstratethestructuralintegrityandleaktightnessofthesystemanditscomponents.C)Aninitialinserviceinspectionwillbeconductedtodetectsourcesofleakageorpotentialleakage.D)PriortostartingthechemicalcleaningoftheSteamGenerators,anoperationaltestofthesystemwillbeperformedusingdemineralizedwatertodemonstratetheoperationalreliabilityofthesystemanditscomponents.II.OPERATIONA)TheoperationoftheSteamGeneratorChemicalCleaningSystemwillbeco-ordinatedbyBackfitStart-upEngineers/Supervisorsfamiliarwithstart-upactivities.Thevs'1 SECTIONVIIindividualsselectedfortheShiftCo-ordinatorpositionsareparticipatinginthedevelopmentofthecleaningprogramandtheprocedureforoperation.Thisinvolvementwillensurethattheseindividualsarethoroughlyfamiliarwiththecleaningprocess.B)TheSteamGeneratorChemicalCleaningSystemwillbeoperatedbyFloridaPowerandLightUnitgltrainedshiftoperators.Theseshiftoperatorsareconsideredtobebestqualifiedforthisjobsincetheirnormaldutiesroutinelyinvolvelargescalepumpingoperationssuchasthis')Mixing,Batching,andChemistryControlwillbeperformedunderthedirectionoftheDowChemicalProjectConsultants.ActualsupervisionoftheprocesssystemoperationwillbebyFloridaPowerandLightpersonnelinaccordancewithspecificprocedures.D)Constructionlaborwillbeprovidedforhandlingandbulkmixingofdrychemicals.E)Allpersonnelinvolvedinthisprojectwillbeinstructedinthehazards,properhandling,safetyequipmentandsafetyprecautionsnecessarytoensurethatsafeoperatingconditionsaremaintainedatalltimes.Thisinstructionwillincludeoperation,',locationandproperusageofsafetyequipment.VII-2 SECTIONVIIF)Duringoperation,thesystemwillbemonitoredbyDowChemicalEngineersandChemiststofollowtheprogressofthecleaningandthuscontroltheoperation.Thesystemwillbemonitoredphysicallyduringoperationbyperiodicinspectionsofallpipingandcomponentstoensurethatsystemintegrityandsafetyismaintained.G)TheoperatingprocedurewillbedevelopedbyFloridaPowerandLightStart-upEngineers/Supervisorsusingtheguidelinesofthe"ChemicalCleaningProcessDescription"inSectionIIIofthisSafetyEvaluationandinputfromDow,CombustionEngineering,EbascoandFloridaPowerandLight.VII-3 SECTIONVIIISTEAMGENERATORCHEMICALCLEANINGWASTECONSIDERATIONSI.EstimatedVolumesforWasteHandlinTheanticipatedchemicalcleaningsequenceofeventsandgeneratedliquidwastevolumesareasfollows:(Estimatesincludethevolumeassociatedwithbothsteamgeneratorsandassociatedf'luidhandlingsystem.)1)CopperRemoval2)PureWaterRinse3)IronRemoval0)ChemicalRinse5)CopperRemoval6)PureWaterRinse7)Iron(DentCleaningStage)8)ChemicalRinse9)CopperRemoval75,000gallonsof'pentNC-30075,000gallonsofrinsesolution75,000gallonsof'pentNS-575>000gallonsof'R-100rinsesolution75,000gallonsof'pentNC-300147,000gallonsof'insesolution75,000gallonsof'pentNS-575,000gallonsofNR-100rinsesolution75,000gallonsof'pentNC-300

SECTIONVIII10)PureWaterRinsell)Iron(DentCleaning)Stage12)PureWaterRinse13)ChemicalRinse14)Passivation15)PureWaterRinse16)FinalPureWaterRinse147t000gallonsofrinsesolution75,000gallonsofSpentNS-575,000gallonsofrinsesolution107,000gallonsofNR-100rinsesolution147,000gallonsofNP-100solution147,000gallonsofrinsesolution107,000gallonsofrinsesolutionA)TotalVolumeConsiderations225,000gallonsof'pentNC-300Solvent225,000gallonsofSpentNS-5Solvent297,000gallonsofNR-100ChemicalRinseSolution147,000gallonsofNP-100PassivationSolution~8QP1,632,000gallonsofTotalliquidvolumewasteVIII-2 SECTIONVIIIII.PlannedDisosalSchemeA.NC-3001)Thequantityofcopperpickedupbythecoppersolventwillbeafunctionof'heamountofcopperwhichhasbeendepositedwithinthesteamgeneratorsDuringthe.DowtrfindsorPotBoilerTest,concentrationsofcopperuptoapproximately2500ppmwereobserved.2)TheplannedmethodforthedisposaloftheSpentNC-300solutionwillbeprocessingviademineralizerslocatedintheSteamGeneratorBlowdownTreatmentFacility.Afterdeminerali-zation,,whichshouldsignificantlyreducetheconcentrationofcopper,dischargeofthedemineralizedeffluenttotheeaststormbasinisplanned.TheSpentNC-300canbedescribedasbeingsimilartoaliquidfertilizer.B.NS-5l)Thequantityofironpickedupintheironremovalstageswillbeafunctionofthequantityofironsludgedepositedwithinthesteamgenerators,plusthedegreeofcomponentcorrosionbythesolvent.DuringtheDowwindsorPotBoilerTest,concentrationsofironuptoabout7500ppmwereobserved. SECTIONVIII2)TheplannedmethodfordisposaloftheSpentNS-5solventwillbeprocessingusingcaustictreatmentforpHneutralizationandpartialprecipitation.Theneutralizedeffluentwillbedischargedtotheeaststormbasin.C)NP-100,NR-100,PureMaterRinses1)Relativelylowconcentrationsofironandcopperareexpectedtobeinthesesolutions.2)Theplannedmethodofdisposalforthepassivationsolutionand,allrinsesolutionsisdischargetotheeaststormbasin.Theproposedschemeisstillunderreviewbythe/FloridaPowerandLightCompanyEnvironmentalDepartment.FinalplanswillincludeprovisionsforcompliancetoapplicableEPAandStateofFloridaregulationscoveringeffluentlimits,surveillances,etc.pertainingtothistypeofwastedisposalprogram.ThewastesfromthisprogramwillbeverysimilartothosegeneratedduringFossilUnitChemicalGleanings,forwhichacceptablewastedisposalprocessesalreadyexist. oaM0000aoooaaaaJoaaIl~~~<<tOoaaaooAll11K.OQAN5'7/SlPerugdpwcfuuWgg'~~7g>><~i~//go'Ci/CjOIOTKlfAMOL-'oao0'Layesid//N/485'~OllaIO~~~~OIOIaa~~Laaoo<<oa~aNaa'-alii~III:LwHCRMAAIAVi0IO0I~Oa~~wp(Oaaa0\KL040Loaaoaaaaaa0OLIO.IILO~Iaal004aalaa040aaalaaaaaaaaaaa~~000000Hlaaaaoa0040ao~oaaaa'aLaa'0~LaaLaaI000\laooLlvlatoLL00Oaa0aooaoaL0olLaaLail0oaaaaaLL00$tlcoaoowB\0loLoaaaolalalat0oaoa0LOOOaOkla\,OMLaOLL'a1000~~Rey.52-lO/22/75D"/G.NO.87704458REV.4bKILNRlw(AFLORIDAPOWER8,LIGHTCOMPANYST.LUCIEPLANTUNIT1~SITEPLANFIGURE1.2-1 LD/LDVV3<'l%TI<<-a<<1<-V<W<Vlwzi<auo*vc~/277lORETCHC~rTOIIXOFSNO.SI<CETOFOKPT.NO.,r,OJI:CT$<<OJCCTg.9(QDE@//-.'80;/gc,'i-po'/AldPovD65FL<-i+~:/+'.ZPO:VCr"."I'2)5~i'<~C:>')JGJATERL~lvE2.osAPPx:3'I+rP(<y<happ/Fax~glg<I'xI~~~~~/or"'---:---/3'-Z"-g-~'ly/w/lofts'fpiEA)sionAPcDEPTHOJ=R4i~R-~$$.((g<t<znPPPgylggiggPggfg//lan.../0-5Se4.0gPzW'CS<'owgAl,::..'...!,z,,-)<~ll~g<;~<~'~g/0'-0'5'-0Id4"lR)SA7M'//=-ziiPzgr7g,grz~/~-/0'-o"/'<"8<"48'-'oSHop.5haroylZllx//-'o"'yJ/~r.'0(l5F'.OFr&~<<)$'O<<L<$$1<<<'YTr11ZlOF7:VIII-6$

SECTIONIXPRE4POSTINSPECTIONPROGRAM SECTIONIXPRE-CIEANINGINSPECTIONSa)AneddycurrentexaminationwillbeconductedonbothSteamGeneratorscovering,asaminimum,therequirementsofthePlantTechnicalSpecificationsandRegulatoryGuidel.83.b)AcomprehensivesecondarysidevisualinspectionwillbeperformedonbothSteamGeneratorsincludingmeasurementstodeterminetheclearancebetweenthepartialsupportsandthewrappertoverifyplatestability.c)CognizantDow,Combustion.Engineering,Ebasco,andFloridaPowerandLightpersonnelofthecleaningeffortwillperformvisualinspectionsoftheSteamGeneratorspriortothecleaningprocessinordertobeabletoassesstheeffectivenessofthecleaning.d)Radioactivityanalysesofsecondarysidesampleswillbeperformedpriortoprimarysidedepressurizationtoverifynoprimarytosecondaryleakageexists. SECTIONIXPOSTCLEANINGINSPECTIONSAcomprehensivesecondarysideinspectionwillbeconductedincluding:1)VisualinspectionbyknowledgeableCombustionEngineeringandFloridaPowerandLightpersonnelforphysicalandmechanicalcharacteristics.2)VisualinspectionsbyDowChemicalpersonnelforeffectsofcleaningwithparticularattentiontocorrosionofSteamGeneratorinternals.3)Detailedanalysesofcorrosionspecimenssub-jectedtothecleaningprocess.0)Samplesofthefinalrinsewaterwillbeanalyzedforcontaminantsetc.toverifytheeffectivenessoftherinses.5)Awiregaugewillbeinsertedintoaccessibleintersectionsoftheupperandlowersupportplatestodetermineiftheannulihavebeencleaned.6)Eddycurrentexaminationsconductedatsubsequentre-fuelingswilldeterminewhetherornotdentinghaseffectively'eenarrested.NOTE:DuringtheNovember,19'78'shutdownandagainduringtheSpring,19'79RefuelingShutdown,cognizantDowCombustionEngineering,EbascoandFloridaPowerandLightpersonnelwillhavebecomethoroughlyfamiliarwiththepre-cleanedSteamGeneratorsinordertocomparewiththepost-cleanedcondition.IX-2 SECTIONXCONTINGENCYPLANFORACTIVITYINSOLVENTWASTEA)Periodicanalyseswillbeperformedtodetermineifthesolventhasbecomecontaminatedwithradioactivity.SincetheSt.LuciePlanthasexperiencednoprimarytosecondaryleakage,itisexpectedthatthesolventandrinsewasteswillbedisposedofasnon-radioactivewaste.B)Atthistime,themostlikelyprocessapplicationwillbewithexternalheatingandcooling.ThismethodhastheReactorCoolantSystematmidnozzlewiththeprimarysideoftheSteamGeneratorsdrained,Thelikeli-hoodofprocesscontaminationfromthereactorcoolantsystemislowusingthisscheme.C)Intheunlikelyeventthatanyofthesolventorrinsewastedoesbecomecontaminated,thefollowingplanwillbeused:1)Eachstepoftheprocesswillbeanalyzedforradioactivity.Thelargestamountof'ontamin-ated,wastethatcanoccura4onetime,willbeonesystemvolume(approximately147,,000gallons).2)ThewastewillbecollectedintheSteamGeneratorBlowdownTreatmentFacility(SGBTF)MonitorTanks(3-180,000gallontanks)andprocessedthrough'

SECTIONXtheDemineralizerSystemoftheSGBTF.ThissystemwasdesignedandconstructedtoprocessradioactivityinSteamGeneratorBlowdownusingionexchangeresinsandhasallprovisionsforactivityreduction,monitoring,collecting,anddischargeofprocessedeffluent.(SeeattachedFSARDescription.)D)Thepotentialforsignificantprocesswastecontaminationisveryremoteasdemonstratedbythefollowingexample:~*')Ten(10)gallonsofreactorcoolantareinadvertentlymixedwithacleaningstep.2)ThegrossactivityislxlOuc/mlapproxim-atelytwoweeksafterreactorshutdown.10gallons(Rxcoolant)147,000gallons(fillvolume)4xlxlOuc/ml=6.8x10uc/mlProcessingwasteofthisactivitydoesnotrepresentaproblemparticularlywiththelargestoragecapacityandhighprocessingcapability(300GPM)oftheSGBTF.Amplespareionexchangeresinswillbeonhandtohandlecontaminatedwasteshoulditoccur.X-2 SECTIONXAnywasteneeding'treatmentandnotreadilydeminer-alizablewouldbeprocessedthrutheradwasteevaporator.X-3 10.4.7STEAMGENERATORBLOWDOWNSYSTEM(SGBS)Steamgeneratorblowdownisutilizedtomaintainthetotaldissolvedsnlids(TDS)contentofsteamgeneratorsecondarysidecoolantwithinnormaloperatinglimits.Primarytosecondaryleakagewouldresultinsomeactivityaccumulationwithinthesteamgeneratorsecondary.Thus,underthesecircumstancestheblowdownstreamwouldhaveanactivitylevelassociatedwithit.Shouldthisactivitylevelexceedaspecifiedlimittheblowdownstreamwouldbeprocessedpriortoitsreleaseviathedis-chareecanal.Threeblowdownprocessstreamsprovidethiscapability.Eachstreamcanprocessthetotalcombinedblowdown(40cpmorgreater)frnmbothunits1and2.Thefacilityisbeineprovidedonabackfitbasisandisexpectedtobecomeoperationalincalendaryear1977.42Duringtheperiodpriortotheoperationofthenewblowdnwntreatmentfacility,steamgeneratorblowdownwillbes'enttotheblnwdnwnflashtank.Ablowdownsamplestreamiscontinuouslymonitoredbyaprocessradiationmonitor.Ifthemonitorindicatesthattheradionuclideconcentrationsare(acceptab]etheblowdnwnwillbedischargedtothecirculatingwaterdis-charge.Ifnot,theblowdownisautomaticallyterminatedandcanberouted,'otheequipment'raintankinthereactorauxiliarybuildingforprocess-ingintheliquidradwastetreatmentsystem.ThegaseousemissionsfromItheblowdownflashtankventwillbecontinuouslydischargedviatheblaw-dawnflashtankvent.Figure10.4-2providestheP&IDforinterimsystemoperation.10.4.7.1DesignBasesTheSGBSdesignbasesarela)tocontrolsteamgeneratorsecondarysidecool'antchemistrywithinnormaloperatinglimits.b)toensurethatanyactivitylevelsassociatedwiththeblowdowneffluentwhencombinedwithotherliquideffluentswillcomplywithlimitatinnseoverninethesereleasesassetforthintheTechnicalSpecifications.c)toprnvideblnwdownsystemcontainmentisolationcapabilityinaccordancewithGeneralDesienCriterion57(GDC57).CTheSGBSisrequiredtosupportnormaloperations.Itisnotrequiredtoachieveasafeshutdown,ormitigatetheconsequencesofanaccident.BasedontheguidancesetforthinRegulatoryGuides1.26and1.29itisaQualityGroupDsystemthatneednotbeseismicallydesigned.SincetheSGBSisnotsafetyrelated,itishousedinastructuredesignedtostandardsappropriatefornon-safetyrelatedstructures.10.4.7.2SystemDescriptionASGBSprocessandinstrumentationdiagramisprovidedhsNormallytheblowdownfromthesteamgeneratorsiscooledblowdownheatexchanger.Theseheatexchaneerseliminateblowdownstoragetankanditsatmosphericvent.BlowdownFigure10.4-1.inaclosedtheneedforapressureisthenX-410.4-6Rev50-8/29/75

reducedbyapressurereducingvalve.Thecooled,lowpressureblowdownisthenrouteddirectlyto'thedischargecanal.Continuousmonitoringofthisblowdownstreamisprovided.Shouldtheactivitylevelintheblow-downstreamexceedaspecifiedvalue,'hestreamisautomaticallydivert-edtooneofthethreeprocessstreams.DiversionoftheblowdownstreamwouldannunciatetheSGBSalarminthecontrolroom.Eachofthethreeblowdownprocessstreamsiscapableofprocessingtheblowdownfrombothunits1and2(40gpmorgreater).Thethree100per-centstreamsandtheassociatedvalvingandpipinginterconnections(seeFigure'10.4-1)provideconsiderableoperationalflexibility.Oneoperatingmodewouldhaveoneprocessstreamalignedtoreceiveunit1blowdownandoneprocessstreamalignedtoreceiveunit2blowdown.Shouldeitherstreamberequired,itwouldbeautomaticallyplacedinservice.TheremainingX-510.4-6@Rev50-8/29/75 spareprocessstreamwould.be.availableto.reprocessliquidsrecirculatedfromamonitortankshouldreprocessingberequired'lowdownsenttoaprocessstreampassesthroughablowdownfilterwheresuspendedsolidsareremoved.Itthenenterstheblowdowndemineralizersystemwherethe,concentrationofexchangeableionsinthecoolantisre-ducedsignificantly.Theprocessedblowdownstreampassesthrougharesintrapenroutetoamonitortank.Sincethedecontaminationfactoroftheprocessstreamismorethansufficienttoachieveactivitylevelsaccept-ableforrelease,themonitortanksmaybepumpeddirectlytothedischargecanal.Theactivityofthisdischargestreamismonitored.andthecapabilityforautomaticisolationisprovided.Prcvisionsarealsoprovidedtoallowthemonitortankcontentstoberecycledtotheplantforuseasmakeup.Lowwaterlevelinamonitortankwillautomaticallyterminatedischargefromthattank.Theblowdowndemineralizationsystemconsistsofacationbeddemineralizerandamixed-beddemineralizerconnectedin,series.Thecationresinusedinthecationandmixed-beddemineralizersisahighcapacity,strongacidex-changeresin.intheH+form.Themixed-bedanionresinisahighcapacity,TypeI,strong-baseexchangeresinoftheOH-form.Spentionexchangeres-insaregravityfedtoaspentresinstoragetankfortemporarystoragepriortodisposalasasolidwaste.SincetheblowdownlinespenetratecontainmentandareconnectedtoaclosedClassIsystem(steamgeneratorsecondary)withincontainment,oneisolationvalveisprovidedinsideandoneoutsideoneachblowdownline.Theisola-32tionvalveislocatedoutsidecontainmentandisautomaticallyclosedonacontainmentisolationsignal(CIS).Table10.4-1providesalistingofdesigndataforSGBScomponents.10.4.7.3ProcessSamlinandMonitorinProcessradiatienmonitoi'ingisprovidedattwopoints,downstreamofthepressurereducingvalveandinthemonitortanklinetothedischargecanalupstreamofthepointofdischarge.Inaddition,samplingcapabilityisprovidedatseverallocationstoallowforperiodicmonitoringofsystemperformances.Thesampling1'ocationsare:a)blowdownfilterinfluentandeffluent..b)demineralizerinfluentandeffluent.c)monitorstoragetankcontentsCapabilityisprovidedtorecirculatethemonitortankcontentspriortosamplingtoinsurearepresentativesample.X-'610.4-7Rev.32-9/6/74 . 10.4.7.4SstemEvaluationRadio.Logicalevaluationsofnormalgaseousandliquidareprovidedin.Sec-tions11.2and11.3.Theprocessstreamsarerequiredifacoincidenceoffailedfuellevel,primarytosecondaryleakageandblowdownratearesuchthatactivitylevelsintheblowdownstreamreachalevelexceedingthatallowablefordirectreleasetothedischargecanal.Shouldthisoccurthree100percentseparateprocessstreams(40gpmorgreater/stream)areavailable.Thus,sufficientredundancyisprovidedtoensuretheavail-abilityoftheprocessstreamasrequiredtosupportnormalplantoperations.Therearenosafetyrelatedfunctionalconsiderationsassociatedwiththissys'erna10.4.7.5InstrumentationInstrumentsareprovidedasrequiredtomonitorsystemoperation.Thenum-ber,typeandlocationareshownonFigure10.4-1.Thesamplingcapability"discussedinSection10.4.7.3isavailabletosupplementprocessinstrumen-tationdata./10.4.7.6TestinandInsectionCorrectinstallationofthesystemwillbeverifiedpriortopreoperationaltestingwhichwillverifysystemfunctionalcapability.Theprocessstreamswillberequiredfromtimetotimeduringplantoperationtherebyprovidinganopportunitytoperiodicallymonitorprocessstreamperformance.X-710.4-8Rev.19-1/20/74

TABLE10.4-1~sDESIGNPARAMETERS'FOR'THE'STEAM'GENERATOR'BLOWDOWN'SYSTEM2~TTLTRRSQuantityTypeofelementsParticleretention,micronDesignpressure,psigDesigntemperature,FDesignflow,gpmMaterialCodeDEMINERALIZERSCation3ReplaceableCartridge5'250200300StainlessSteelASMEVIII,DivisionIMixed-'Bed3>>QuantityDesignpressure,psigDesigntemperature,FResinvolume,ft~Designflow,gpmMaterialCodeTANKS~325000150300StainlessSteelASMEVIII,DIVI,Monitor-Storae'3'250200250300StainlessSteelASMEVIII,DIVI'SentResinStoraeQuantityInternalvolume,galDesignpressure,psigDesigntemperature,FMaterialCode31800000Atmospheric200CPgfbra5Patff(kPa'f4>>)ANSI,AWWA,orAPI18000Atmospheric150StainlessSteelASMEVIXI,Div.I4~.PUMPSMonitorTankSluiceResinWater'ransferQuantit'yTypeDesignpressure,psig~3.Centra.fugal15012CentrifugalCentrifugal150150Designtemperature,FCapacity,gpmDesignhead,ftWettedmaterialHorsepowerCode150400150StainlessSteel50N>>A>>150200150StainlessSteel20N>>A>>~1501050StainlessSteel1N.A.X-810.4-9Rev.19-1/20/74 baal/MotoaaaaofvMfo>>llataaf~IlIIM~IIKOIauaa~aoaooawatato<~Ioavoaotoa1000Clo004Jlov4ovffNooolÃchoolofo~aaKv>>a00alarata>>Illvro%.2-786~IMOMIIofvavaala\alaav~Illa>>KIKOMottVliattaaoQ~~IMttaraf~raaIa>>IO0,IMaatM>>Maa>>a>>liat>>0Ofa'IW-0ofvvttarLatavalovaallo0Clo0044lov4ovamoothhafJOOOIbiIaaaMKaMavaflIooooaeafotla>>aataaKtlfat>>aaatollalvalaaaaVaatJg-8~Itatolvv~>>vaoMaaFLORIDAPOWER8LIGHTCOMPANYST.LUCIEPLANTUNITSTEESTEAMGENERATORBLOWDOWNPROCESS,SYSTEI'IDIAGRAMFIG&10.4-1

SECTIONXISTEAMGENERATORTUBEVIBRATIONTESTING

SECTIONXITUBEBUNDLEDYNAMICRESPONSETESTFORCHEMICALLYCLEANEDSTEAMGENERATORINTERIMSUMMARYOFRESULTSFortheSt.LucieUnitlSteamGeneratorschemicalcleaninghasbeenproposedtoremovecorrosionproductsfromthetube/tubesupportplatecrevice.Somedegreeof"tubedenting"hasbeenexperienced,effectivelyin-creasingthetube/tubesupportplateclearanceoncechemicalcleaninghasbeenperformed.Thereexistscon-cernthat,followingtheremovalofcorrosionproductsbychemicalcleaning,theenlargedsupportclearancesmayinducehighertubevibrationlevels.Thissummaryreviewsaprogramforinvestigatingtheeffectsofenlargedtubeclearancesonthedynamiccharacteristicsofarepresenta-tiveSt.LucieUnitlSteamGeneratorTubeBundleThetestresultsprovideexperimentaldatainsupportofthenecessarycomputationswhichwillassesstheeffectsofchemicalcleaningontubevibration.ThetestmodelgeometryisdepictedinFigureXI-1,aswellasitscorrespondencetotheactualSteamGenerator.Thedynamictubeparametersinresponsetoaconstant

SECTIONXIinputacceleration,inducedatthesimulatedtubesheet,areidentified.Afrequencysweeptechniqueandamovable,internallymountedaccelerometerareemployedtomapthedynamicresponsesalongthetubeheight.Thedataisanalyzedandcomparisonsmadebetweenthe"as-built"and"chemicallycleaned"conditions.Parametersof'ignificantinterestforthesecomparisonsare:a.naturalfrequencies;b.modeshapes;c.criticaldampingratios;andd.dynamicresponses.Testingisconductedf'rawaterenvironmentonly.Aresonancedwelltest,inexcessof10cycles,attheendoftheprogramwillinvestigateifextendedresonantvibrationcausestubewearduetofretting.Inadditionananalyticalmodelwasconstructed(seeFigureXI-2)sothatamodelanalysiscouldbeper-formed.Theresultswereofconsiderablehelpinevaluatingthedata.PHASEIRESULTS:Thetestwasinitiallyrunforas-builtgeometry.SupportspacingsareshowninFigureXI-1.Thenominalplateholesizeis0.'780inch.Thenominal"Egg-Crate"stripthicknessis0.090inch.XI-2 SECT10NXIForthe"aftercleaned"conditionaradialdentmagnitudeof0.020inchwasconservativelyassumedfortheplates.Thustheenlargedplateholesizeis0.836inchwhichincludeschemicalactiononbasematerialsThethinned"Egg-Crate"stripthic1oiess(duetochemicalaction)is0.084inch.Acomparativeincreaseinharmonictuberesponseatthesupportplatelevelsoffromtwotofourwasobserved.Littlechangewasobservedatthe"Egg-Crate"levels.Thestructuraleffectsofthisincreaseisbeingevaluated.PHASEIIPLANS~Itisplannedtofurtherincreasetheclearancesinboththeplatesand"Egg-Crates"by0.014inchonthediameter.Alsoadditionalinstrumentationwillbeusedtoassesstheeffectsofimpactingbetweenthetubesandsupportsandgaininformationontheincreaseinrandomtuberesponse.ProvisionshavebeenmadetoperformanadditionalNvibration"runatanevenhigherlevelofmetalremovalifotherfactorsindicateaneedexists.XI-3 C~SPADCE4)YNAW/Cn,SPOTS+78'57C//~W/CRLLYCLED'ZD4784Mg.&/gg/O7OP"tjOtjU7457-&COA1Q7AZgs/~uc.eras:Ori1ledPlate(Kiev.10)Ori1ledPlate(Elev.9)P/o9EC7EC7/7.$'C322,0+C79o4P//DP4CQvC//GY(GfA')PRRr/Rcpurc/oTA@PRE/Low8'/1PRR7/4LPLRrc9fASPRYEC5$07./2$<3PR<7<<L/'6&C/2RrCg74JPRA/PR/2.r/RLSc739.0+<dSPRYE++CR+rzz.ECIJ9.02ac/QPR//QO,C2$'ST4PR//7//CCS//d'87SjLUC1ET.FIGUREXI->1I CC)MUU~IICONKNUINhhRINCi,liI'ENGINEERINGDEPARTMENT,CHATTANOOGA,TENN.CHARGENO.DPSCRIPTION4Y/VrP~/C48S'ŽA'SE-$7.LdC/E2NUMBERSHEETDATE/0-N7FCHECKDATEBYgarma'R,BY.2z.oQ2'F2S22,20o<oz~PgF~6/6E'hV4CO84/VH6Y7/CRC./ViOOE'6O.O.O.7SW'~0VF//YO,37$0~3z7WBZc-+.~ac////7R~=O-VVZ////7(g,'-g)=O./oC/n'7TyCR~-R~)=o.Qpc5s//va.ZoS./8o.oaC///r~/6D/.TX/o/o3/&7uW2O7./ZSZZ.5'c.5'8OirI//5~y~/Sz+oO~C72I~W~P'CioCX'oS)+(.BYZX.BaC~)=.O3Z.3+.OZV3'.ozcc39,039.oFIGUREXI-2Po.C2S +E~~6'S'isoIIAIC4rriIn.Ec.Wp.\tif'v~.97Sa~4lIrACC4516Ãl8SI':2ET:0'QF(SEISIIElGIE.VIROH~MEN:.'"4tEEFIMAGE'0TACOUSTlcALSOC1ET;@4<+~>$.~4g

SEISMICANODYNAMICTESTCAPABILITIESATCOMBUSTIONENGINEERINGINC.ThepurposeofthispresentationistodescribetheequipmentandcapabilitiesofCombustionEngi-neering'sNuclearLaboratoriesforsolvingspecifictechnicalandengineeringproblemsrelatedtodynamicandseismicqualificationtestingofnuclearcomponentsandequipment.Tomeetincreasingdemandsforverificationbytestingofthestructuralintegrityofreactorcomponents(fuelelements,controlroddrivemechanisms,steamgeneratortubesandothers),togetherwiththedemandformorecompleteexperi-mentaldata,theC-EEngineeringDevelopmentDepartmenthasacquiredadditionaltestequipmentandbuiltupadynamictestgroupofskilledmanpower.AlthoughthisgrowthincapabilitywasgeneratedprimarilytosupportC-E'sownreactorcomponentprojects.C-E'sdynamictestfacilityisalsonowrenderingparametrictypeofvibrationandseismicqualificationtestingservicestoutilitiesandvariousequipmentvendorsandusers.Thispresentationisdividedintofivecategories:1)ThestaffingoftheDynamicTestGroup.2)Theexistinganalyticalcapabilities.3)Thetestrachinecapabilities(themainemphasisofthepresentation).4)Theenvironmentaltestcapabilities.5)Anoutlineofacombinedanalytical-experimentalqualificationprogramforaClass1Eelectricalcomponent.STAFFINGThedynamictestgroupiscomposedofateamoffourseniorengineers(PHOsandMSs),astraingaugespecialist,plusexperiencedengineeringspecialistsandseniortechnicians.experiencedwith.vibrationtransducersandtestequipment.ThisteamhasconductedallofC-E'sextensivetestprogramsonfuelassemblies.aswellastheseismicqualificationtestofCEOMs(combinedanalyticalandexperimental)andseveralelectronicpackages.Theyaredirectlyinvolvedintheplanningofproposedandconductedtestprograms.Otherareasofthisteam'sinvolvementinclude:1)Acquisi'onofadigitalvibrationcontrolsystem.2)Dynamictesting,ofsteamgeneratortubes.3)Combined.,analyticalandexperimentalseismicqualificationofplantprotec-tivecabinets.4)Fieldtestingofreactorcomponents.5)Modal'nalysisstudiesanduseofFFTtypedataacquisitionsystemfordeter-minationofnaturalfrequenciesanddampingparametersoflightlydampened.fluid-e'lasticallycoupledtubulararrays.ThestaffengineersalsoprovideconsultingservicestootherC-Edepartmentsandtocustomers.SomeoftheirprojectsaredescribedinRefs.1-4.ANALYTICALCAPABILITIESTheComponentandtheDynamicTestGroupsoftheC-ENuclearLaboratoriesdesignaswellasperformanalysisfortheverificationofstructuralintegrityofcontrolroddrivemechanismsunderpostulatedmechanicalexcitationandseismicdisturbanceconditions.TheSTRUDL,ANSYS,MRI/STARDYNEandSAP-4*computerprogramsareusedtoperformdynamicanalysisoftheCEDMstructures(andalsoofotherstructuresincludingcabinets.testfixtures,etc.)andtocomputetheirresponsecharacteristicstoseismicdisturbanceconditions.Consequently,thedynamictestgroupengineersareintimatelyfamiliarwithappliedresponsespectratechniques,randomvibrationanalysis,andtimehistorymethods.Theyhaveexperiencewiththemathematicalmodelingofnon-linearstructures,too.Thisanalyticalexpertiseiscomplementedbyextensiveexposuretoexperimentaltesting.High>>speeddigitalcomputationandinfo+a-tionprocessinghasbeenemployedtoanalyzedynamicresponsedatafromtests.Theexistingin-housecomputerprograeningcapacityhasrecentlybeenexpandedbytheacquisitionofadigitalvibrationcontrolsystemwithmodalanalysiscapabilities.Thissystemprovidesalladvanceddataanalysisfunctionssuchasstatisticalanaly-sis,Fourferanalysis,PSOs,transferfunctions.autoandcrosscorrelationanalysis,coherencefunctions,zoomcapabilities,shockspectrumanalysis.etc.Fastdigitalplottingroutinesareavailableforallgeneratedfunctions.DYNAMICTESTMACHINECAPABILITIESThenuclearlaboratorieshaveaseriesofelectrodynamicshakers,onemechanicalshaker,andtwohydraulicactuators.Mostimportantoftheseunitsarethe50-lbelectrodynamicshaker,whichhasbeensuccessfullyemployedforresonanceanddampingsurveysinthefield,the1200-lbandthe1500-lbelectrodynamicshakers,andthe22,000-lbforcecapabilityhydraulicactuator.whichdrivestheseismicsimulationfixture.Asecondhydraulicactuator(onorderwith11,000*AllcomputercodesaresubjecttoC-E'squalityassurancerequirerants.

lbsforce,6-inchdoubleamplitudestrokeandvelocitycapabilityinexcessof40in/sec)willallowenvelopmentofgenerictypeofrequiredresponsespectraforC-Eelectronicpackagesanddevicesthatatepartoftheplantprotectivesystems.Boththe1200-lband1500-lbelectrodynamicshakersareequippedwithanalogtype,dual-channeltrackingfiltervibrationcontrolanddataacquisitionsystems.Theseinstallationsallowcontinuoussine(resonancedwell)tests,andsinesweeptestswithclosedfeedbackloopcontrolledinputmotions.Theelectrodynamicshakersc'nalsobehookeduptothedigitalvibrationcontrolsystemformorecomplexinputmotiontests,suchasrandomorsinebeattests.OneoftheSpectralDynamics,Inc.analogvibrationcontrolsystemsisshowninFig.1withtheUnholtzDickieelectrody-namicshaker,whichissetuptoexciteaclusterofstraightsteamgeneratortubes.Atankenclo-sureisusedtosimulatetheactualwateroperatingenvironmentforthetubes,whicharesupportedoffthebuildingwall.VerticalsupportofthetubesisprovidedbyanM/RadCorpsliptable.Figures2and3showthebiaxial,seismicsimulationfixture,whichhasbeenusedforsinesweep,resonancedwell,andshockresponsespectratests.Forthelattertestmode,theanalogshockspectrumsynthesizerandanalyzerunitsusedinitiallyarenowreplacedbythenewTimeDatar~44yor~t.t">>.g~~r~~(l'.~W~pQ.r~V>r4>%Zr>>>r>'>Q<<rI49r,44~4Fig.2:SeismicsimulationsystemDigitalVibrationControlSystemwhichhasdemon-stratedsuperiorcontroloftheshakertablemotioncomparedwiththeanalogequipment.TheseismicsimulationsystemconsistsofanIPSelectro-hydraulicactuatorandanH/Radtesttable.Thehydraulicactuatorthatdrivesthetablehasanominaldynamicforceratingof+22,000lbswithamaximumstrokeof+3inches.er~"<<MIuII4>gL'4.I>4II7i4>4rlQI4r<<~'<<N',I'~,,~j>Qo.4'a.>>.r>.>44>.4~<<II>>>4.4;-jW,.'g5CII4II'III~II.'~iIFig.1:Steamgeneratortubevibrationteststand/44~r'ig.3:SideviewofseismicsimulationsystemwithmountedCEDH Thedual.highperformanceservo-valvesprovide15gpmfluidflowwithaflatfr'equencyresponseto100Hz.Thepumpingcapacityofthehydraulicpowersupplyis20gpm.Theactuatorisequippedwithaswivelbaseandswivelheadforeaseininstallationanduseofthetesttablefixture.Thetableisconstructedofaluminumwithastructuralsteelsupportframe.Thetopsurfaceofthetableaffordsa5ftx5fttestarea.The1300-lbtableissupporteTIofftheframebyfourtwo-inch-squarearms,pinnedateachcornerofthetableandtothesupportframe.Thearmsrotateonsteelpinswithlubricatedbronzebearings.CzTrimimaQamORglU$33XIBLlL'LiJILtItliiCTPvl'C5!CNllINRTCRTTONROSCTLLOSCORISRAXTRCONTROLTrwTXoRcrllocxxttI/LOflLTRTheactuatorisconnectedtothecenterundersideofthetesttableandanchoredtothefloorthroughavectorbase.Thevectorbasepermitsadjustingthedirectionofinputfromhorizontaltovertical.Asthetableisrestrainedbyitsarms,asinglevectoredinputisconvertedtobothhorizontalandverticalmotions.Therelationshipofthehorizontalandverticalforcesisadjustedbyvaryingtheinputangletotheactuatorwithrespecttothetable.Thisangleisadjustableinfive-degreeincrementsfromverticaltohorizontal.Thehorizontalandverticalcomponentsaredescribedasphase-lockedsincetheyarealwaysactingtogetherinthesamevectordirection.Theentiretestfixtureissecuredtoalargeconcretemassbymeansofconcreteanchors.*ThenewdigitalvibrationcontrolsystemthatdrivestheseismicsimulationfixtureisshowninFig.4alongwithperipheraltypeofsignalcondi-tioningandrecordingequipment:.TheTimeDataCorporationcontrolsystemconsistsofa28kmemoryPDP-11computer,ahardwiredprocessingunitandadualcartridgediskunit.ThehardwarealsoincludestheCRTdisplayunit,aswellashardcopier.Theperipheralequipmentshownconsistsofchargeandvoltageamplifiersforaccelerationandforstrainsignalconditioning,an8-channelCRTtypeoscillograph,aRocklandfilter,andanoscilloscope.Thesoftwareandfrontpaneloptionspurchasedwiththevibrationcontrolsystemprovideforthefollowingtestandanalysiscapabilities:1)Sinesweeptesting(fourchannels).2)Continuousrandomtesting.3)Responsespectrumsynthesis(singleclannal)andanalysis(fourchannels)of30second(minimum)durationshockwaveforms.Dampingandfrequencyresolutionvariableoverawiderange.4)Synthesisofasingleaxisofexcitationof(upto)80seconddurationtimehistoryevents.'*AdditionalinformationaboutthesytemcanbeobtainedfromReferencel.i~gp~Fig.4:Digitalvibrationcontrolsystem5}Nodalanalysis.6)ZoomanalysisandstandardsignalprocessingfunctionssuchasFouriertransfer,Auto/Crosspowerspectraldensity,coherencefunctions,etc.Thedynamictestfacilityhasinexcessof50piezoelectricaccelerometers,andanaccelerometercalibrator,avarietyofquartzandstraingaugetypeofloadcells,25LVDTtypedisplacementtransducersandaseriesofvelocitytransducers.Inadditiontothe.dataacquisitionchannelsofthevariousvibrationcontrolsystems,thedynamictestfacilityisequippedwithtwo8-channellight-tracevisicordersandthree8-channelstripchartrecorders.TheexistingFHtaperecorderwithmultiplexingfeatureaddsanadditional40channelsofpermanentdatarecordingcapability.Thesignalscanbedirectlyprocessedfromtapebythen'uclearlaboratory'sdigitaldatareductioninstallation.ENVIRONMENTALTESTEUIPNENTThreeovensareavailableinthenuclearlaboratoriesfortemperatureaginginanuncon-trolledairenvironment.Theyarecontrollableupto500Fwithcalibratedtemperaturerecordingdevicesavailable.Inaddition,thereareatotalof18autoclavesofvarioussizesrangingfrom1>>inchdiarreterby18incheslongtoa12-inchdiameterby144incheslong.Allareofstainlesssteelconstructionwithratingsupto3200psiat800F.Environmentaltestingundertemperatureandhumiditycontrolledconditionsisperformedina2x2x2-ftenvironmenta.ltestchamber.Specialtestchambershavebeenbuilttoaccow.odatelongtubulartypesoftestspecimensforcontrolledtemperatureandhumidityexposures. OUTLINEFORSEISHICUALIFICATIONAPPROACH0CLSECOHPONENTSFigures3and5showafree-standingcontrolroddrivemechanism(CRDH)ontheseismicsimulationfixture.Thisset-upwasforatesttoqualifyareedswitchpositiontransmitter(RSPT)forcomtrar-cialserviceattworeactorinstallat1onsinconformancewiththerequ1rementsofIEEE344-1975.(SeeRef.1fordetails).TheRSPTisatransducerelementthatsensesthepositionofthecontrolelementassemblywithinareactorcoreandprovidesavoltagesignalanalogoustoit.TheRSPTismounted(insidetheshroud)onacontrolelementdrivemechanism.alargenumberofwhichareinturnmountedontopofthereactorvesselhead.CEOMSEISMICSUPPORTSC-E'splants'havethecapabilityofbeingsitedinareaswherethestipulatedseismicenvironmentatthefundamentalnaturalfrequencyoftheCEDHmaybesohighthatanadditionalseismicsupportwouldberequired.Figure6showsaschematicofsuchare-.actorheadconfiguration.Thedesigncallsfor91CEOHswithvaryingnozzlelength.Thesearetiedtogetherbyaseriesofmechanicalshockarrestersinacriss-crosspatternandaresupportedthroughaseismicsupportplateoffthereactorheadliftstruc-ture(Figs,7and8).Asfortheseismicqualifica-tionrequirementsforthereactorheadarea,there-actorheadliftstructure,theCEOHsandtheRSPTsROTATEOINTOSECTIONVENT~PIPEi'r;~.~'C'Cl:Fig.6:Schematicofreactorheadarea~~3housedinsidetheCEOHshroudareofconcern.Mhere-asthefirsttwoitemsarequalifiedprimarilybyanalyticalmeans(backedupbytestdata),theveri-ficationoftheadequacyoftheRSPTdesignissub-jecttoatest.Astothereactorheadliftstructure,thelargebeamplatetypefiniteelementmodelofFig.9isusedfordeterminationofthestresses.TheloadingcomingfromtheCEDHsintotheheadliftrigstructureisconsideredintheanalysis.~'i"'4~~l0~~Fig.5:TestsetupCEOHonstandFAseismictable-freeAstothequalificationoftheCEDHs.arepresentativedynamicfiniteelementmodelisavailable(Fig.10).Thevalidityofthemodel,intermsofnaturalfrequencies,modeshapes,andcritical,dampingparameters.canbeinvestigatedbyaseriesoftransientexcitationandforcedvibrationtestsonprototypicalfree-standingorsupported,singleCEOHs.Sincethedynamiceffectsoftheheadliftstructurecannotbeneglected,itsfinemeshstressmodelrepresenta-tionisreducedtoasimplebeamtypemodelwhichretainedthedynamicstiffnessandmasscharacter-isticsoftheactualstructure.The91CEDHsare,lumpedintoonelargeCEDHtype,assumingtunedfrequencycharacteristicsforallCEOHs,andthenconnectedbyarepresentat1velinesnubberconnec-tiontothereactorheadliftstructure.Forthis AITACHh'IENTPOINTSI80SEISMICSUPPORTPLAITCI8thl0I)IAIISPLATFORMBEAhlSEISMICPLA'IETRAM.RAILSUPPORTBEAtaK.BRACINGEXTENSIONL'EGS~IFTRIGSKIRTPLENUthPLATETYPICALCEOthNOZZLEREACTORHEAO~TYPICALCEOhlEXHAUSThlANIFOLOINSTRUMENTATIONNOZZLESKIRTTOREACTORHEADCONNECTIONRINGOCEGM~SBSMICSNU88IR0SCALEsI"~2L8"Fig.8:CEDEseismicsupportattachmentpointsPLATFORhlSUPPORT8EAhlELEhIENISFig.7:HeadliftrigwithCEDARScoupledconfiguration,aresponsespectrumanalysisispelformedwiththeloadinginputspecifiedforthereactorvesselheadelevation.SincetheCEDEfrequenciesalehighlyinfluencedbytheCEDHnozzleheight,thenozzlelengthofthemodelisvariedovertheentirerangeandresultsfromallthesecomputationsareenveloped.Thestresslevelsdeterminedbythisconservativequalifica-tionapproachwerefoundacceptableinallcasesstudied.Toincreserealismforplantswithhigherseismicrequirements,paralleltothiseffortananalysisprogramhasbeeninitiatedinwhichtheindividuali.yofall91CEDNS(withdifferentnozzlelengths),snubbers,ortheheadliftrigstructurecomponentscanbeconsideredoverawidefrequencyrange.Fromthefinemesh/stressmodelrepresentationsofcomponents,suchastheseismicplateortheheadliftrigsupportbarrel,super-elementtypemassandstiffnessmatricesweredevelopedandtiedtogetherinalargecomputermodel.Earlyresultsofthissophisticatedanalysisapproachsupportthesimplifiedmethod.FINITEILIA'BITthOCELSUPPORTSKERTSHELLELEh'.ThisSIIIRTTOQO/IPITRAhl.RAII.SUPPORTBEAMELEh'lENISEXTENSIONLEGSO'EAh'IELEhuNISFortheseismicqualificationtestingoftheRSPT,ourtestsetupiscapableofsimulatingitsFig.98Reactorheadliftrigstructurestressmodel Ql~p,QllQLPHQJI>>P>>QLpredictedbytheanalyticalmodelingtechniques.Duringthequalificationtest,theentirestruc-turewillbeexposedtosimultaneous,phase-lockedverticalandhorizontalexcitatjonsofequalmagnitudes.Therandommult1-frequencyinputmotionswillbesynthesizedovertheseismicrange.AnalysisoftheinputresponsespectrawillbeperformedbeyondtheZPAlevel.TheelectricalperformanceoftheRSPTwillbemonitoredforanytransientsorfailuremodes.CONCLUSIONQpPILPT.PoI~>>~~Ill>>Q>>~IIILlQT>>0TTJ>>OISTLIVCTIPJHLJO>>TQL>>25QQITT>>JJTO1T>>IIJITHIJJ>>L>>~IJJ>>JI0J>>%JOJTTTheacquisitionofmoderntestequipmentcombinedwithtestexperiencegainedoverseveralyearsinstructuraltesting,seismicqual1ffcationtesting,fluid-structureinteractionpatterns,andanalyticalmodelingandcomputationtechniques'ormsthebasisforastrongandaggressivedynamictestgroupattheC-EttuclearLaboratorfes.Thelargefinancialinvestmentsmadeduringthepastnotonlyallowustomeetourin-houserequirements,butallowustoprovidecoanterfcalservicestooutsideorganizations.REFERENCESQLlIX1QL,ILl1Llll2.HASLIt<GER,K.H.andMORLACHER,W.R.,HABiaxialSeismicSimulationTestSystem,"TESTHagazfne,June/July1977;CombustionEngi-neeringReprintTIS-5173.HASLIttGER,K.H.,"ForcedVibrationTestingofaNuclearFuelAssembly,"PaperpresentedatASMEVibrationsConference,Chicago,Illinois,September26-28,1977;ASHEPaper77-DET-141;CombustionEngineeringPublica-tionTIS-5139.Fig.10:Scheratfcrepresenationofthetheoreicallymodeled150-inchCEDMin-servicemountingconditions.AfullsfzedCEDHcanbeassembledontheseismicshakertable.Thereedswitchassenblyisinsertedfntheshroudandclampedintoplace.Theeffectsofheseismicsupportconfigurationthencanbesimulatedinaconservativefashanbymeansofamasttypetestfixturemountedontheshakertable.ActualshockarresterscanbeusedtotietheCEOMtothesupporttestfixture.BoththeCEOHanditssupportstructurewillbesubjectedtothesameexcitationspeciffedintermsofresponsespectrafortheOBEandOBEevents.Toguarantetheadequacyofthisapproach,thetestconfigurationhasbeenrodeledandanalyzedforitsrpresentatfvenessofthereactorenvironment.Thecriteriaemployedfortheevalu-ationaresimilarfrequencycharacteristicsoftheCEOLHTaswellas,sufficientlyhighroot-of-the-squaresdisplacementlexcursionsattheRSPTmountinglocations.'Initiallylowlevelsinesweeptestscanbeconductedtodemonstrateagree-mentoftheempiricaldynamiccharacteristics(modelverificatfon-naturalfrequenciesdamping)ofthetestconfigurationwiththecharacter1st1cs3.HORLACHER,W.R.."AnalyticalGenerationofResponseSpectraforEquipmentMountedinLargeCabfnetsTHPaperpresentedatthe17thICESUsersGroupWorldwideConference.Cambridge,Hassachusetts.September15-17,1976;CombustionEngineeringPublicationTIS-4940.LUBIN,B.T.,HASLIttGER,K.H.,PURI,A.,andGOLDBERG,J.."ExperimentalDataontheNaturalFrequencyofaTubularArray,"PaperpresentedatJointAppliedMechanics,FluidsEngineering8BfoengfneeringConference,NewHaven,Connecticut,June15-17,1977;ASHEPaper77-FE-10. SECTIONXIIFPhLCO.OPINIONOFTHEPROGRAM SECT10NXIIPLORIDAPOWERANDLIGHTCOMPANYOPINION1)Theapplicationofthecleaningprocesswillbeaccomplishedwithasystemthatiscompletelytemporary.Allportionsofthesysteminsidecontainmentand/orhavinganyeffectsonplantoperationwillberemoveduponcom-pletionof'hecleaning.2)Nopermanentplantchangesarerequiredtoperformthiscleaningoperation.3)Notechnicalspecificationchangesarenecessaryinordertoperformthecleaning.0)Throughoutlaboratoryand"pot"boilertesting,includingresidualhangovertesting,noadverseeffectshavebeenidentified.ModelBoilerTestsplannedforjanuaryf1979areexpectedtofurtherconfirmthis.5)Aviableprocessexists-additionaldevelopmentalworkbeingdoneisorientedtowardshavingthehighestpossiblelevelofconfidencethattheprocesswillclearthefouledannuli.6)AcomprehensivetubevibrationtestandanalysesprogramisdemonstratingthatthepostcleanedSteamGeneratorwillperformmechanicallyaswellasthepre-cleanedSteamGenerator.7)Corrosiontestinghasrepeatedlydemonstratedthatthecorrosionratesareacceptablylowand,infact,XII-1

SECTIONXImayhaveallowancesformultiplecleanings.NounexpectedorexotictypesofcorrosionhaveoccurredthroughouttestingbyDoworCombustionEngineering.InparticulartheInconelTubesshowratesofcorrosionveryclosetozeros8)Thisisconsidered,tobeamaintenanceevolutionofapreventativenature.Consideringtheprecedingandthat:l.Theprobabilityofoccurrenceortheconsequencesofanaccidentormalfunctionofequipmentimport-anttosafetypreviouslyevaluatedintheSafetyAnalysisReportisnotincreased.2.ThepossibilityforanaccidentormalfunctionofadifferenttypethananyevaluatedpreviouslyintheSafetyAnalysisReportisnotcreated.3.ThemarginofsafetyasdefinedinthebasesforanyPlantTechnicalSpecificationisnotreduced.IT'ISCONCLUDEDTHATTHEPROPOSEDSTEAM'GENERATORCHEMICALCLEANINGPROGRAMDOESNOTINVOLVEANUNREVIEWEDSAFETYQUESTION+"ThisopinionisbasedoninformationabouttheSteamGeneratorChemicalCleaningProgramasitpresentlyexists.XII-2 SECTIONXXCertaindevelopmentalandprocesstestingworkisongoingatthistimeandmayresultinchangestotheprogram.Itisintendedtosubjectanychangesthatmayoccur,whenfinali-zed,tothesamereviewprocessasisconductedonthisEvaluationReport.Adeterminationwillbemade'thatthesechanges,ifany,donotaffecttheFloridaPowerandLightopinionofthiscleaningoperationpriortocommencementofcleaningactivitiesontheSt.LuciePlantSteamGenerators.XII-3 C 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