ML17229A786

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Rev 2 to Cable Derating in Conduits W/Fire Barrier Coatings.
ML17229A786
Person / Time
Site: Saint Lucie  NextEra Energy icon.png
Issue date: 06/16/1998
From:
FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML17229A785 List:
References
PSL-OFJE-96-001, PSL-OFJE-96-001-R02, PSL-OFJE-96-1, PSL-OFJE-96-1-R2, NUDOCS 9806300530
Download: ML17229A786 (31)
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Text

St.LucieUnits1and2DocketNos.50-335and50-389L-98-175Attachment 3Pagei'Calculation No:Title:0RevisionforNRCGL92-08RAI¹2RevisionforHeatLoadINITIALISSUEol-I4-9812-17-968-12-96Oro-fr-9812-17-968-12-96oro-~r.I12-18-968-14-96No.DescritionDateREVISIONS ChkdDateArDate980b300530 980b2bPDRADQCK05000335PPDRampcalc.05/98

PageiiCalculation No.Rev.TitlePae1012121315SectionCoverListofEffective PagesTableofContents1.0Purpose2.0References

2.0 References

2.0References

2.0 References

2.0References

2.0 References

2.0References

2.0 Reference

3.0Methodology

3.0 Methodology

3.0Methodology 4.0Assumptions/Bases 4.0Assumptions/Bases 4.0Assumptions/Bases 4.0Assumptions/Bases Rev.000Pae16171819202122232425Section5.0Calculation

5.0 Calculation

5.0Calculation

5.0 Calculation

5.0Calculation

5.0 Calculation

5.0Calculation

5.0 Calculation

6.0Results6.0ResultsRev.Pampcalc.05/98 PageiiiCALCULATION NUMBERREV.1.02.03.04.05.06.0CoverSheetListofEffective PagesTableofContentsPurpose/Scope References Methodology Assumptions/Bases Calculation Results10121624ICEAPub.No.S-66-5245.NEMAStdWC7-88,ExcerptTable2-456-1NUCONInternational, Inc.,"Pyrolysis GasChromatography Analysisof9Thermo-Lag FireBarrierSamples",

P.O.No.LJ950WP-006,12May1995NUCLEARREGULATORY COMMISSION "SECONDREQUESTFORADDITIONAL INFORMATION

-GENERICLETTER92-08,"THERMO-LAG 330-1FIREBARRIERS",

ST.LUCIEPLANT,UNIT1AND2,ANDTURKEYPOINTPLANT,UNIT3AND4(TACNO.M82809)ampcalc.05/98 CALCULATION NO.REV.SHEETNO.~1.0ELIBEQSEThepurposeofthiscalculation istodetermine orupdateampacityvaluesforpowercablesroutedinSt.LucieUnit1andUnit2conduitswrappedwithThermo-Lag firebarriersystemsaslistedinpreviouscalculations (Ref.2.3).Thisdocumentoutlinesthemethodology usedtodetermine powercableampacityincluding deratingfactors.Wrappedconduitderatingfactorsaredetermined forexistingfirebarriersandforupgradedsystems.Existingcableprotection willbeupgradedoncertainconduitstomaintainrequiredlevelsofprotection.

Thecablesintheconduitshavebeenevaluated torequireprotection becausenoredundant functions oralternate conduitroutesexisttoeliminate theneedforprotection (Ref.2.76-2.88).Byperforming anevaluation withupgradedconduitwrap,cableampacitymarginsmaybeverifiedtoensureadequatecapabilities existforproviding powertoaffectedelectrical loads.Revision1tothiscalculation addsadiscussion oftheoperating heatloads(Wattsperfoot)forthewrappedcablesandacomparison ofthecablesatSt.LucieplanttothecablestestedatOmegaLaboratories forTexasUtilities'omanche PeakPlant(Ref.2.26).Heatloadfactorsprovideanadditional assurance thatcablesinstalled atSt.Lucieareenveloped bythetestconfiguration.

Revision2ofthiscalculation changesthecabletabulations forcablecurrentcarryingcapacitybasedonIEEEambientconditions with'NoSun-0Ft/s'elocity airflow(Ref.2.75)andtoenhancethecalculation inresponsetoNRCquestions fromtheSandiaNationalLaboratories'eview toclarifyexistingassumptions andinputs(Ref.2.105).Engineering reviewedtheampacityderatingtestsperformed byUnderwriters Laboratories forFloridaPowerCorporation (FPC)forCrystalRiverNuclearStation(Ref.2.109)asrecommended bytheNRCtodetermine applicability toSt.LuciePlant.FPCinstalled upgradestoThermo-Lag firebarriersusingMecatissfirebarriersystems.Thisisnotapplicable toSt.Lucieinstallations; however,theinitial/baseline firetestsprovideinformation onexistingThermo-Lag firebarriers.

TheFPCtestingconcluded thatforone(1)inchconduit,installation ofThermo-Lag 3-hourfirebarriersincreased thecurrentcarryingcapacityofaffectedcables;i.e.,AmpacityDeratingFactor(ADF)of4.26%andAmpacityCorrection Factor(ACF)of1.04.Forfour(4)inchconduit,onehourThermo-Lag firebarriersalsoincreased thecurrentcapacityofaffectedcables;i.e.,ADFof3.31%andACFof1.03%.Threehourfirebarriersonfour(4)inchconduitderatedthecurrentcapacityofaffectedcables;however,nottothedegreethathadbeenpreviously reported; i.e.,ADFof2.69%andACFof0.973.Deratingfactorsoriginally usedforSt.LuciePlantcablesaremoreconservative thanthesevaluesandaretherefore boundedbytheFPCtesting.Revision0andRevision1ofthiscalculation listedallaffectedcablesinprotected conduitswhetherthecableprovidedpower,control,lowlevelsignalorotherfunctionwhichwasonlyintermittently energized, suchasvalvepowercables.Revision2removedthecablesthatdonotrequireconsideration ofampacityderatingforcontinuous loading.ampcalc.05/98 CALCULATION NO.REV.SHEETNO.~2.02.1FloridaPower5LightCompany,St.LuciePlantUnitNo.1,Appendix"R"SafeShutdownAnalysis, 8770-B-048, Revision2.2.2FloridaPower5LightCompany,St.LuciePlantUnitNo.2,Appendix"R"SafeShutdownAnalysis, 2998-B-048, Revision1.2.3FPLCalculation PSL-BFJE-93-002, Revision1,"Ampacity DeratingResponsetoNRCGL92-08forCableRoutedinConduitswithThermo-Lag 330-1FireBarrierSystemCoating"FPLCalculation PSL-O-F-J-E-90-011, Revision2,"StationBlackoutHotStandbyLoads".2.5FPLCalculation PSL-O-F-J-E-90-012, Revision1,"StationBlackoutColdShutdownLoads".2.6FPLCalculation PSL-1-F-J-E-90-015, Revision0,"SafetyRelatedBatteries 1Aand1B".2.7FPLCalculation PSL-2-F-J-E-90-016, Revision0,"SafetyRelatedBatteries 2Aand2B".2.8FPLCalculation PSL-1-F-J-E-90-017, Revision0,"BatteryChargers'lA,IAA,'IB,1BB,1ABKilowattInputDemand".2.9FPLCalculation PSL-2-F-J-E-90-018, Revision0,"BatteryChargers2A,2AA,2B,2BB,2ABKilowattInputDemand".2.10FPLCalculation PSL-2-F-J-E-90-019, Revision0,"Unit2BatteryChargers2A,2AA,2B,2BBand2ABSizing".2.11FPLCalculation PSL-2-FJE-90-020, Revision4,"St.LucieUnit2Emergency DieselGenerator 2Aand2BElectrical Loads".2.12FPLCalculation PSL-2-F-J-E-90-025, Revision0,"Evaluation ofCalculation WHL-39,Rev.0".2.13FPLCalculation PSL-2-FJE-90-028, Revision1,"Unit2LowDCSystemVoltageCalculation".

2.14FPLCalculation PSL-1-F-J-E-91-002, Revision0,"Instrument Inverters 1A,1B,1C51DACOutputLoading".

2.15FPLCalculation PSL-1-F-J-E-91-004, Revision0,"Unit1HighDCSystemVoltageAnalysis".

2.16FPLCalculation PSL2-FJE-91-007, Revision0,"PSL2-Comparison ofAnticipated Electrical LoadingConditions toEquipment Ratings".

2.17FPLEvaluation JPN-PSL-SEMP-92-039, Revision1,"Operability Assessment ofThermo-Lag 330-1".ampcalc.05/98 CALCULATION NO.REV.SHEETNO~2.0(cont'd)2.18FPLCalculation PSL-2FJE-93-001, Revision1,"St.Lucie-Unit2ShortCircuit,VoltageDropandPSB-1AnalysisCalculation."

2.19FPLCalculation PSL-OFJE-93-004, Revision0,"St.LucieStationBlackoutEmergency DieselGenerator Transient Analysis".

2.20FPLCalculation PTN-BFJM-96-005, Revision0,"FireBarrierAmpacityCorrection Factors-Extrapolation ofTestResultsfor3HourBarrier".

2.21EBASCOServices, Incorporated, Calculation EC-100,Revision1,"FireWrappedConduitsCableAmpacityDocumentforSt.LucieUnits1and2".2.22EBASCOServices, Incorporated, Calculation EC-192,Revision2,"MOVTOLHeaterSelection Calculation".

i2.23EBASCOServices, Incorporated, Calculation WHL-8,Revision7,"PowerCableAmpacityDocumentforSt.Lucie¹2".2.24EBASCOServices, Incorporated, Calculation WHL-25,Revision2,"Instrument Inverters ACOutputLoading".

2.25Industrial TestingLaboratories (ITL)ReportNo.84-10-5,DatedOctober,1984,"Ampacity Testfor600VoltPowerCablesInstalled inaFiveFootLengthofTwoInchConduitProtected withThreeHourFireRatedDesignofThermo-Lag 330-1FireBarrierSystem."2.26OmegaPointLaboratories, "Ampacity DeratingofFireProtected Cables",ProjectNo.12340-94583,95165-95168,95246, Electrical TesttoDetermine theAmpacityDeratingofaProtective EnvelopeforClass1EElectrical

Circuits, datedMarch19,1993;Preparedfor:TUElectric-ComanchePeakSteamElectricStation.2.27FloridaPower&LightCompany,St.LuciePlaritUnit1,Drawing8770-G-366, Revision34,ReactorContainment BldgEl.45'-0Conduit,Trays&Grounding Plans.2.28FloridaPower&LightCompany,St.LuciePlantUnit1,Drawing8770-G-375, Sheet1,Revision22,ReactorContainment BldgPenetration Details.2.29FloridaPower&.LightCompany,St.LuciePlantUnit1,Drawing8770-G-390, Revision20,ReactorAuxiliary BuildingEl-0.50'onduit, TraysandGrounding Sh.1.2.30FloridaPower&LightCompany,St.LuciePlantUnit1,Drawing8770-G-391, Revision27,ReactorAuxiliary BldgEl-0.50'onduit, Trays&Grounding-Sh.

2.2.31FloridaPower&LightCompany,St.LuciaPlantUnit1,Drawing8770-G-392, Revision35,ReactorAuxiliary BuildingEl.19'-6Conduit,Trays&Grounding

-Sh.1.ampcalc.05/98 CALCULATION NO.REV.SHEETNO.~2.0(cont'd)2.32FloridaPower&LightCompany,St.LuciePlantUnit1,Drawing8770-G-393, Revision30,ReactorAuxiliary BuildingEl.19'-6Conduit,Trays&Grounding

-Sh.2.2.33FloridaPower&LightCompany,St.LuciePlantUnit1,Drawing8770-G-395, Revision20,ReactorAuxiliary

Building, El.43'-0,62'-0Conduit,Trays&Grounding.

2.342.35FloridaPower&LightCompany,St.LuciePlantUnit1,Drawing8770-G-424 S01,Revision6,FireProtection ReactorAuxiliary BuildingEl-0.50'.FloridaPower&LightCompany,St.LuciePlantUnit1',Drawing8770-G-424 S02,Revision7,FireProtection ReactorAuxiliary BuildingEl.19.50'.2.36FloridaPower&LightCompany,St.LuciePlantUnit1,Drawing8770-G-424 S03,Revision7,FireProtection ReactorAuxiliary BuildingEl.43.00'.2.372.38FloridaPower&LightCompany,St.LuciePlantUnit1,Drawing8770-G-424 S04,Revision4,FireProtection ReactorAuxiliary BuildingEl.19.50'ndEl.43.00'.11FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-366, Revision14,ReactorContainment Bldg.El.45'-0Conduit,Trays&Grounding Plan.2.39FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-375, Sheet1,Revision13,ReactorContainment Bldg.Penetration Details.2.40FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-390, Revision16,ReactorAuxiliary BuildingEl.(-)0.50'Conduit,Trays&Grounding Sh.1.241FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-391, Revision17,ReactorAuxiliary BuildingEl.(-)0.50'Conduit,Trays&Grounding Sh.2.2.42FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-392, Revision15,ReactorAuxiliary BuildingEl.19'-6ConduitTrays&Grounding-Sh.

1.2.43FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-393, Revision14,ReactorAuxiliary BuildingEl.19'-6Conduit,Tray&Grounding-Sh.

2.2.44FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-395, Revision14,ReactorAuxiliary BuildingEl.43'-0,62'-0Conduit,Trays&Grounding Sh.2.2.45FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet2,Revision4,RABEl.19.50'onduit Layout.anpcnlc.05/98 i2.0CALCULATlON NO.(cont'd)REV.SHEETNO.~2.46FloridaPower5.LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet3,Revision4,RABEl.19.50'onduit Layout.2.47FloridaPower5.LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet4,Revision4,RABEl.19.50'onduit Layout2.48FloridaPower&.LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet6J,Revision1,R.A.B.andR.C.B.Appendix'R'rapped ConduitSummary.2.49FloridaPower5LightCompany,St.LuciePlantUnit2,'Drawing 2998-G-411, Sheet7,Revision7,RABEl.19.50'onduit Layout.2.50FloridaPower5.LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet8,Revision5,RABEI.19.50'onduit Layout.2.51FloridaPower5LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet9,Revision5,RABEl.19.50'onduit Layout.2.52FloridaPower5.LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet10,Revision4,RABEl.19.50'onduit Layout.2.53FloridaPower5LightCompany,St.LuciaPlantUnit2,Drawing2998-G-411, Sheet13,Revision3,RABEl.19.50'onduit Layout.2.54FloridaPower8cLightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet14,Revision5,RABEl.19.50'onduit Layout.2.55FloridaPower5.LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet15,Revision3,RABEl.19.50'onduit Layout.2.56FloridaPower5LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet16,Revision2,RABEl.19.50'onduit LayoutSh.16.2.57FloridaPower8cLightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet17,Revision3,RABEl.19.50'onduit LayoutSh.17.2.58FloridaPower5LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet18,Revision2,RABfl.19.50'onduit LayoutSh.18.2.59FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet19,Revision4,RABEl.19.50'onduit LayoutSh.19.ampcalc.05/98 CALCULATION NO.REV.SHEETNO.~2.0(cont'd)2.60FloridaPower&.LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet20,Revision7,ReactorAuxiliary BuildingElectrical Penetration AreaConduitLayoutSh.20.2.61FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet22,Revision9,RABEl.43.00'onduit Layout.2.62FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet23,Revision6,RABEl.43.00'onduit LayoutSh.23.2.63FloridaPower&.LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet29,Revision9,RABEl.43.00'onduit LayoutSh.29.2.64FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet30,Revision7,RABEl.43.00'onduit Layout.2.65FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet34,Revision12,ReactorAuxiliary BuildingEl.43.00'onduit LayoutSh.34.2.66FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet35,Revision9,RABEl.43.00ConduitLayout.2.67FloridaPower8cLightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet36,Revision7,ReactorAuxiliary BuildingEl.43.00'onduit LayoutSh.36.2.68FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet37,Revision6,ReactorAuxiliary BuildingEl.43.00'onduit LayoutSh.37.2.69FloridaPower&.LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet38,Revision7,ReactorAuxiliary BuildingEl.43.00'onduit LayoutSh.38.2.70FloridaPower&LightCompany,St.LuciePlantUnit2,Drawing2998-G-411, Sheet39,Revision8,RABEl.43.00'onduit Layout.2.71FloridaPower&LightCompany,St.LuciePlantUnit1,CableandConduitLists,8770-A-328.

2.72FloridaPower&LightCompany,St.LuciePlantUnit2,CableandConduitLists,2998-A-328.

2.73FloridaPower&.LightCompany,St.LuciePlantUnitNo.1,ControlWiringDiagrams(CWD),8770-B-327 series.2.74FloridaPower&.LightCompany,St.LuciePlantUnitNo.2,ControlWiringDiagrams(CWD),2998-B-327 series.anpcnlc.05/98 CALCULATION NO.REV.SHEETNO.~2.0(cont'd)2.75IEEEStandardPowerCableAmpacityTables,IEEEStd.835-1994, ApprovedDateSeptember 22,1994.2.76Engineering Evaluation St.LucieUnit1,JPN-PSL-SEMP-94-052, "ReviewofAppendix'R'ualification ofThermo-Lag Protected ConduitsinFireAreaA."2.77Engineering Evaluation St.LucieUnit1,JPN-PSL-SEMP-94-053, "ReviewofThermo-Lag Protected ConduitsinFireArea8."2.78Engineering Evaluation St.LucieUnit1,JPN-PSL-SEMP-94-054, "ReviewofThermo-Lag Protected ConduitsinFireAreaC."2.79Engineering Evaluation St.LucieUnit1,JPN-PSL-SEMP-94-055, "ReviewofAppendixR'ualification ofThermo-Lag Protected ConduitsinFireAreaE."2.80Engineering Evaluation St.LucieUnit1,JPN-PSL-SEMP-94-056, "ReviewofThermo-Lag Protected ConduitsinFireAreaN."2.81Engineering Evaluation St.LucieUnit1,JPN-PSL-SEMP-94-064, "ReviewofThermo-Lag Protected ConduitsinFireAreaO."2.82Engineering Evaluation St.LucieUnit2,JPN-PSL-SEMP-94-057, "ReviewofAppendix'R'ualification ofThermo-Lag Protected ConduitsinFireAreaA."2.83Engineering Evaluation St.LucieUnit2,JPN-PSL-SEMP-94-058, "ReviewofAppendix'R'ualification ofThermo-Lag Protected ConduitsinFireAreaB."2.84Engineering Evaluation St.LucieUnit2,JPN-PSL-SEMP-94-059, Qualification ofThermo-Lag Protected ConduitsinFireAreaC.""ReviewofAppendix'R'.85Engineering Evaluation St.LucieUnit2,JPN-PSL-SEMP-94-060, "ReviewofAppendix'R'ualification ofThermo-Lag Protected ConduitsinFireAreaH."2.86Engineering Evaluation St.LucieUnit2,JPN-PSL-SEMP-94-061, "ReviewofAppendixR'ualification ofThermo-Lag Protected ConduitsinFireAreaI."2.87Engineering Evaluation St.LucieUnit2,JPN-PSL-SEMP-94-062, "ReviewofAppendix'R'ualification ofThermo-Lag Protected ConduitsinFireAreaM."2.88Engineering Evaluation St.LucieUnit2,JPN-PSL-SEMP-94-063, "ReviewofAppendix'R'ualification ofThermo-Lag Protected ConduitsinFireAreaO."ampcalc.05/98 CALCULATION NO.REV.SHEETNO.~2.0(cont'd)2.89StandardHandbookforElectrical Engineers, 11thEdition.2.90Westinghouse ElectricCorporation Drawing¹9552D65, Sheet3,"St.LucieUnitNo.2ElectricHydrogenRecombiner SolidStatePowerController Schem",EMDRACNo.2998-3031, Revision1~2.91St.LucieUnitNo.1,Cable&ConduitList8770-B-328, Installation Notes,Sh.12,Rev.9.I2.92FPLSt.LucieUnit1Drawing8770-G-275 Sh.1,Revision12,"6.9kVSwgr&4.16kVSwgrOneLineWiringDiagramSh.1".2.93FPLSt.LucieUnit1Drawing8770-G-275 Sh.7,Revision12,"480VMotorControlCentersOneLineWiringDiagramSh.7".2.94FPLSt.LucieUnit2Drawing2998-G-275 Sh.18,Revision5,"4.16kVSwitchgear No.2A3and2B3OneLineDiagrams".

2.95FPLSt.LucieUnit2Drawing2998-G-275 Sh.19,Revision3,"4.16kVSwitchgear No.2AB,No.2A4andNo.2B4OneLineDiagrams".

2.96FPLSt.LucieUnit2Drawing2998-G-275 Sh.35,Revision8,"480VMotorControlCenterNo.2B5(Sh.1)OneLineDiagram".

2.97FPLSt.LucieUnit2Drawing2998-G-275 Sh.41,Revision7,"480VMotorControlCenterNo.2B6Sh.2OneLineDiagram".

2.98ICEAPublication No.S-19-81,NEMAStandards Publications No.WC3-1980, ApprovedSeptember 19,1979,"Rubber-Insulated WireandCablefortheTransmission andDistribution ofElectrical Energy",Table2-4.2.99ICEAPublication No.S-66-524, NEMAStandards Publication No.WC7-1988, "Cross-Linked Thermosetting-Polyethylene-Insulated WireandCablefortheTransmission andDistribution ofElectrical Energy".2.100ICEAPublication No.S-68-516, NEMAStandards Publication No.WC8-1988, "Ethylene-Propylene-Rubber-Insulated WireandCablefortheTransmission andDistribution ofElectrical Energy".2.101Engineering Evaluation St.LucieUnits1&2,JPN-PSL-SEEP-94-108, Revision1,"Evaluation ofExistingThermo-Lag FireBarriers" ampcalc.05/98

'2.0CALCULATION NO.(cont'd)REV.SHEETNO.0I2.102Engineering Evaluation JPN-PSL-SENP-95-030, "Response toNRCRequestforAdditional Information Dated12/28/94".

2.103NUCONInternational, Inc.,"Pyrolysis GasChromatography Analysisof9Thermo-Lag FireBarrierSamples,Performed forFloridaPower5LightCompany"(Attachment 2).2.104EPRIPowerPlantElectrical Reference Series,Volume4,"WireandCable",Section4.4.2.105NRCSecondRequestforAdditional Information

-GenericLetter92-08,"Thermo-Lag 330-1FireBarriers",

St.LuciePlant,Units1and2,andTurkeyPointPlant,Units3and4(TACNo.M82809),DatedApril23,1998.2.106NRC"SAFETYEVALUATION OFAMPACITYISSUESRELATEDTOTHERMO-LAG FIREBARRIERSATCOMANCHEPEAKSTEAMELECTRICSTATION,UNIT2(TACNO.M85999)",

ToC.LanceTerry,GroupVicePresident, NuclearTUElectric, DatedJune14,1995.2.107NRC"CRYSTALRIVERUNIT3-REQUESTFORADDITIONAL INFORMATION REGARDING THERMO-LAG RELATEDAMPACITYDERATINGISSUES(TACNO.M91772)",

ToMr.RoyA.Anderson, SeniorVicePresident, NuclearOperations, FloridaPowerCorporation, DateMay22,1997.2.108FLORIDAPOWERCORPORATION toU.S.NuclearRegulatory Commission, "Response toRequestforAdditional Information Regarding Thermo-Lag RelatedAmpacityDeratingIssues",DatedJuly3,19972.109NRC"SAFETYEVALUATION ADDRESSING THERMO-LAG RELATEDAMPACITYDERATINGISSUESFORCRYSTALRIVER(TACNO.M91772)",

DatedNovember14,1997.2.110FPLCalculation PSL-BFSM-98-005, Revision0,"ELECTRICAL AMPACITYCORRECTION FACTORSFORTHERMO-LAG FIREBARRIERS".

2.111FPLConstruction Specification MN-3.21,Revision8,"INSTALLATION ANDINSPECTION GUIDELINES FORTHERMO-LAG FIREBARRIERMATERIAL".

mapcalc.05/98 CALCULATION NO.REV.SHEETNO.~3.03.1ReviewtheAppendixRSafeShutdownAnalysis(SSA)forcablesidentified asrequiring protection andconduitsidentified withfirebarriers(Ref.2.1&2.2).3.2ReviewUnit1FireProtection

drawings, 8770-G-424 S01,S02,S03andS04(Ref.2.34-2.37)forconduitsshownandlistedasprotected orshownaseprotection notrequiredbyfurtherevaluation.

Firebarrierswereinstalled ontheeconduitspriortothere-evaluation whichremovedprotection requirements (Ref.Table5.2).3.33.4ReviewUnit2AppendixRwrappedsummarydrawing,2998-G-411, Sheet6J(Ref.2.48)forconduitsshownandlistedasprotected orshownaseprotection notrequiredbyfurtherevaluation.

Firebarrierswereinstalled ontheeconduitspriortothere-evaluation whichremovedprotection requirements (Ref.Table5.35.5.4).fReviewUnit2racewayandconduitlayoutdrawingsforconduitswrappedwithThermo-Lag 330-1firebarriersforRG1.75separation (Ref2.38-2.47, 2.49-2.70).

3.5IdentifycablesinconduitscoveredwithThermo-Lag 330-1firebarriersystemsnotpreviously identified inSSAs;i.e.,RG1.75andcablesinconduitsdesignated e.3.6Determine cablefunctionfromreviewofassociated controlwiringdiagramsandcompilelistingsofpowercablesaffected.

Signalandcontrolcablesdonotcarrysufficient currenttogenerateheatinthecableandreduceampacity.

Powercablestovalvesareexcludedduetotheshortdurationofvalveoperation.

3.7Reviewcalculations issuedbyEBASCO,Services, Inc.andFPLEngineering todetermine loadsandcurrentsusedforaffectedpowercables.Selectworstcaseloadingfrombackground information anddetermine whichloadswillbeappliedtothecablescontinuously orlongerthanthetimewhichwillheatthecablefromtheloadcurrent(Ref.2.3-2.16, 2.18-2.24).

3.8Formotors,determine kilovolt-amperes (KVA)ratingfromhorsepower ratingandthencalculate currentbasedonlinevoltage(480or4160volts)todevice.Motorkilovolt-amp andefficiencies arediscussed inAssumption 4.10and4.11.3.9Obtainderatingfactorsformultiplepowercableinstalled inthesameconduit,thenumberofcurrentcarryingconductors intheconduit(C/C)andtheAmpacityCorrection Factor(ACF)calculated inPSL-BFSM-98-005 (Ref.2.110)~3.9.1The(C/C)deratingfactoraddsapercentage basedontheadverseeffectofmutualinductance ofenergized currentcarryingconductors andtheeffectsonotherconductors withinthesameraceway.Forconduitswithmorethanthree[3]energized'conductors, themutualinductances causethecurrenttomoveawayfromotherenergized conductors whichcreatesinductive heatingandlosseswithintheconduit.ampcalc.05/98 CALCULATION NO.REV.SHEETNO.~3.03.9.2InresponsetotheNRCrequestforadditional information (Ref.2.105),anewfirebarrierheattransfercalculation (Ref.2.110)wascreatedspecifically forSt.Luciefirebarrierinstallations.

Thiscalculation determines anewACFbasedonfirebarriertestingperformed forFPCCrystalRiverStation.ThisrevisedACFwasreviewedagainstexistingACFandaddedinTables5.5.a,5.5.band5.5.c.3.9.3ICEA(Insulated CableEngineers Association) cabledatatablesgiveampacities

[Ic]forthreeconductor (3/c)ortriplexcablesinaconduitinair.Revision1tothiscalculation usedthecableampacityforcablesinconduitinfreeairwith'NoSun-2Ft/s'irvelocitybasedonoperating conditions intheReactorAuxiliary Buildings ofSt.Lucieplant.InresponsetoNRCconcernsinthe1998RAI(Ref.2.105),forRevision2thecurrentcarryingcapacityofindividual cableswaschangedto'NoSun-0Ft/s'irvelocity.

Thisambientcondition isforcablesinstalled indoorswithnoventilation.

Changingtheambientconditions reducedthecablecurrentcapacityamaximumof4.4%forsize00[1/c¹2/0AWG].Thecableampacities arederatedwhenthenumberofconductors inaconduitexceedsthree(3).Cableampacityismultiplied bythefollowing correction factorforinductive heating(Ref.2.104):TotalNumberAmpacityCorrection EarthM~arati~34-67-241.000.800.703.10Calculate deratedampacity(I')foreachpowercable.(I')=lcx(ACF)x(C/CDerating%)3.11Determine marginpercent(%)betweenratedcablecapacityandthederatedampacity(I'):%Margin=(DaratedMm~

-1)x100LoadAmpsRequired(l) 3.12Operating heatloads(Wattsperfoot)arecalculated asfollows:Watts/foot

=(¹ofconductors)

(resistance per1000ft)(loadcurrent)~

/1000Theheatloadsforthederatedcurrentloadona.,cabletypeiscomparedtotheoperating heatloadfortheactualcurrentloadonacabletoassurecabledesignisnotexceeded.

ampcalc.05/98 CALCULATION NO.REV.SHEETNO.~3.13Cableresistance valuesaregivenatatemperature of25'C.Table6-1(attached) providesthefollowing temperature conversion equationforcopperconductors:

R1=R2(259.6/[234.5

+T2]);,where; R2=R1([234.5+T2]/259.5)R2=R1([2345+90]/259.5)=R1(1.2505)R1=resistance at25'CR2=resistance atoperating temperature T2=cabletemperature; i.e.,90'C4.04.1Fireprotection wrapusedatSt.LuciestationistheThermalScience,Inc.(TSI)Thermo-Lag FireBarrierSystem.Typically, thehalf-round "clamshell" coversappliedoverconduitshaveanominalthickness of6/8"forone(1)hourratingsandoneandone-quarter (1-/i)inchforthree(3)hourratings.Installation ofallrequiredfirebarrierswasreviewedandconfirmed orupgradedtobeinstalled perConstruction Specification MN-3.21(Ref.2.'111).4.2Theoriginaldesigncalculations forderatingfactorsbasedonheattransferdetermined thatThermo-Lag barriersreducedampacitybyapproximately 12%,however,forconservatism, aderatingfactorof15%wasselectedforpowercablesizing(Ref.2.21).4.3Controlandinstrumentation cablesarenotsubjecttoampacitylimitsduetothesmalllevelsofcurrentused.Voltagedropinthecontrolcircuitisusuallythelimitingfactorforcabledesignandnormallyrequirestheinstallation oflargercablestoperformrequiredfunctions.

Thisappliestocontrolandsignalcablesinconduits, cabletraysandenclosures.

Thecontinuous devicecurrentloadwasusedasabasisforthiscalculation.

Momentary loadrequirements, i.e.,thoselastinglessthan1minute,arenotconsidered.

Loadsofthisdurationarenotsustained longenoughtoinduceheatintheaffectedpowercables.Abnormally highlevelsofcurrentfordevicesaredetectedbyprotective devicesandthecomponent isdesignedtobeseparated fromthepowersourcebeforethecondition damagesthecomponent orcable.4.5Fireprotection barriersinSt.LucieUnit1andUnit2wereoriginally installed oncableconduitsandconduitboxesonly.TherearenopowercabletrayswrappedwithfirebarriersattheSt.Luciestation.However,sectionsofconduits11001F-3",

11001H-3",

21001F-4" and21001H-4" areroutedina"banked"configuration forportionsoftheirroute.Therewerenotestedconfigurations forbankedconduitruns;therefore, theampacitycorrection factorforcabletraywereused.Thebankedconduitsareinasingleplane,theconduitsizeof4inchesissimilartothedepthofcabletrayusedatSt.Lucieandtherequiredprotection isforone-hour(1-hr)withdetection andsuppression.

Usingthecabletrayderatingfactorforthree-hour (3-hr)firebarriersgivesamoreconservative estimateofthecurrentcarryingmarginfortheaffectedcables(11001F,11001G,11001H,11001J,21801W,21801X,21801Yand21801Z).aepcalc.05/98 II f//CALCULATION NO.REV.SHEETNO.~4.04.6Thiscalculation appliestocablesinprotected conduitsinsideandoutsidecontainment ofbothSt.Lucieunits.Theambienttemperature forcablesinsidecontainment isassumedtobe50'C.Outsideofthecontainment buildings, ambienttemperatures areassumedtobe40'C(104'F).Operating temperatures intheRABarenormallycloserto30'C;however,forconservatism, thehighertemperature willbeused.4.7PowercablesutilizedinSt.Luciestationareratedforoperation at90'Cconductor temperature.

Thehighertheinsulation temperature rating,thegreatertheallowable ampacityforagivenconductor size.4.8Conduitsprotected inSt.LucieUnit¹1use(3)hourbarrieroneandone-quarter (1-'/i)inchnominalthickness material.

Conduitsprotected inSt.LucieUnit¹2maybeprotected withone(1)hour5/8"nominalthickness materialorthree(3)houroneandone-quarter (1-~/i)inchnominalthickness material.

Upgradestothefirebarriersystemsforone-hour(1-hr)protection wasprovidedbyusingnominal5/8"thickness Thermo-Lag 330-1pre-shaped half-round sectionsoverlaidwith3/8"nominalthickness Thermo-Lag sections.

Three-hour (3-hr)upgradesisprovidedbyusingoneandone-quarter (1-~/~)inchnominalthickness Thermo-Lag basematerialwithoverlaysofThermo-Lag 770-1.Thenumberof770-1wrapsisdependent onconduitcablefillpercentages.

4.9Conductor currentvaluesfor600voltcablesarebasedonlEEEstandardvalues(Ref.2.75)forconductors rated600to5000volts,90'C(194'F)ambienttemperature withnosolarheatingandzero(0)ft/sventilation/air flow.4.10Whereloadvaluesareonlyknowninkilovolt-amperes (KVAs),thecurrentisdetermined by;amps(singlephaseACorDC):P3xVamps(threephaseAC)ampcalc.05/98 CALCULATION NO.REV.SHEETNO.~4.04.11Theampacitytestingperformed forComanchePeakPlantwasperformed forconduitsranginginsizefrom3/4inchesto5inches.ConduitscoveredwithThermo-Lag 330-1firebarriersatSt.Iucieplantrangefrom1-1/2"to5".Theheatload(I'Rloss)fromeachcablesectionisincludedinTables5.5a,5.5b.5.5.5c.Theseheatloadswerecomparedtothetables/charts usedbyTurkeyPointwhereheatloadswerecomparedtotheOmegaPointLaboratory testforTexasUtilities ComanchePeakPlant(Ref.2.20).Fromthisitisconcluded thatthetestsamplesutilizedarerepresentative oftheconfiguration atSt.Lucie.4.12Therearenoinstalled cabletraysectionsatSt.Lucieprotected byThermo-Lag firebarriers.

However,thereisalargepullboxinstalled inSt.LucieUnit2elevation

(-)0.50',box8243'I-SA whichwasreviewedduetosize.Theboxisa42"x42"x12"enclosure usedasapullboxforthepowercablestoAFWpump2A.Thehorizontal surfaceonthebottomoftheenclosure isexpectedtobemostaffectedbyfiresinthe12"boxdepth.Becausetheoriginaltestperformed byTSIincludeda12"cabletraysectionandtheComanchePeaktestincludeda24"cabletraysection,thelargeenclosure inSt.LucieUnit2isconsidered boundedbytheprevioustests.Revision2toPCM97040,toupgradetosouthwallofthe28.67'levation oftheReactorAuxiliary Building'A'ablePenetration AreaExtension (Loft),willaddashortsectionofThermo-Lag firebarriertocabletrayC17atplanpoint(2116),nearcolumnRAI-RA3.Thisisacontrolcabletrayandisnotaffectedbytheinstallation ofThermo-Lag firebarriers.

Controlcablesarenotrequiredtobeevaluated forcableampacityderatingduetolowlevelofcurrentnormallyused.4.13lnaccordance withReference 2.101,thethickness oftheThermo-Lag andthegapswithintheThermo-Lag, foundduringtheinspection ofthecorrectly installed configurations fortheUnit152onehourandthreehourbarriers, wereinaccordance withtheinstallation instructions ofTSI.Therefore, theconfiguration oftheThermo-Lag barriersatSt.LucieareboundedbytheTSIinstallation instructions.

4.14FPLparticipated inagenericindustrytestprogrammanagedbytheNuclearEnergyInstitute (NEI)whichincludedverification ofthechemicalcomposition ofThermo-Lag material.

AspartoftheNEItestprogram,apyrolysis gaschromatographic analysiswasusedtoqualitatively comparetheorganicconstituents ofvariousThermo-Lag samples.St.Lucieprovided(9)samplesfrominstalled andwarehouse Thermo-Lag materials.

AIIofthesamplestestedatNUCONLaboratory inColumbus, Ohiowerefoundconsistent intermsofchemicalcomposition (Ref.2.103).ResultsofthetestingprogramweresentdirectlytotheNRCbyNEIletterdatedOctober3,1995.PerReference 2.102,theNRCstatedthattherewasessentially nodifferences betweenthesamplesfordifferent lots,areasofthecountryandtheyearthematerialwaspurchased.

cuapcslc.05/98

'CALCULATION NO.REV.SHEETNO.~4.04.15ApplyingtheRevision2ampacitycorrection factorsfor3-hourfirebarrierstocable110028(BatteryCharger18)reducedthepercentmargintoapproximately 2%.Thiswasacceptable withexistingderatingfactorsbutdidnotallowforanyothervariables orpotential deratingfactorincreases.

Areviewofthebackground fortheloadcurrentofthiscableshowedthatthecalculation forsizingthebatterychargersandRevision1ofthismadetheassumption thatforworstcaseloading,thechargerswereassumedtobein'current-limit'onditions (315Amps).Aftertheinitial60secondsfollowing aI.OOP,thechargersareloadedontherespective emergency dieselandanycurrentnotrequiredbythedcsystemisusedtorechargethebattery.Currentdemandtorechargethestationbatteries isrninirnal duetotheshortdurationofthedischarge.

Basedonsystemloading,onlyapproximately (6)Ampere-hours isdischarged fromthebatterywhichrepresents 0.25%ofthebatterycapacity.

Inactualapplication, removing0.25%capacityfromthebatteryresultsinasmalleradditional currentdrawfromthechargers.

Normalrecharging takesplaceoveralongerperiodofhours,typically between8-10hours(Ref.2.85,2.9).Basedonthebatteryloadingcalculation (Ref.2.6),thebattery/charger willseeapeakdemandfollowing theLOOPof228Ampereswhichwillfurtherdiminishafterthefirst(30)minutes.Usingthisvalueresultsinamarginof39.65%forcables110028and116018..Inaddition, withinstalled detection andautomatic suppression, protection forconduit110028isonlyrequiredtobefor1-hour.Calculation PSL-BFSM-98-005 (Ref.2.110)concluded that3-hourwrapona4"conduitextrapolated for1-hourprotection hasaACFof0.952.WiththisACF,thecableampacitymarginfor110028becomes64.09%.ToreplacetheexistingThermo-Lag wallaroundFireZoneC-578,Train'8'CEquipment/Inverter Room,firebarrierswereremovedfrom110028andBatteryCharger188conduit116018,cable116018,waschosenbereliedonforsafeshutdowninthisarea.ThecablestoCharger188arephysically thesamesizeasCharger18cablesandtheconduit,116018,isroutedmoreconvenient forprotecting.

ampcalc.05/9>

i'CALCULATION NO.REV.SHEETNO.~5.05.1Thedocuments listedinSection2.0ofthiscalculation werereviewedtoidentifythecableswrappedwithThermo-Lag whichmustbeconsidered forampacityderatingfactors.5.2BillofMateriallistingswerereviewedforcablesidentified in5.1todetermine individual cablesinsulation voltageratingandintendedgenericuse,i.e.,powerorcontrolandtabulated inTable5.1.5.3Frominformation listedindocuments ofSection2.0andappropriate billsofmaterial, Tables5.2,5.3and5Aweregenerated toidentifyaffectedcablesinwrappedconduits.

Thesetablesidentifycabletypes,usagevoltageclass,insulation voltagerating,adescription ofthecableloadforpowercablesandthenumberofcurrentcarryingconductors ineachconduit.5.4Motorloadkilowattandcurrentratingsvaryinpriordocuments depending onbasevaluesused.Forthiscalculation, currentvaluesformotorsweredetermined fromnameplate listingsonreferenced One-LineListdrawings.

5.5Fromthisinformation andSection2.0;Tables5.5.a,5.5.band5.5.cwerecreated.5.6Duringthe1997refueling outagesforbothSt.Lucieunits,cablesinconduitspreviously requiredtobeprotected werereworkedorreroutedintoareaswherethecableswerenolongerrequiredtobeprotected.

St.LucieUnit1PCM97034reroutedcables11001F,11001G,11001Hand11001JwhichconnectStationServiceBattery1AtoDCTestPanel1Afromelevation 19.5'ommon Hallwayand'B'lectrical CablePenetration areas,FireZonesC55WandC-78,toelevation 43.0'romthe'A'attery Room,throughthe'A'witchgear RoomtotheCableSpreadRoomwherethe'A'estpanelislocated,FireZonesA60andB57.Thecableswhichconnectthe'A'Cbusthroughthemanualtransferswitch,inverter1AandtoInstrument Bus1lVIA,11009G,11009Jand11009Q,wererelocated fromthe19.5'ommon Hallway,FireZoneC55W,totheCableSpreadRoom,FireZoneB57,wheretheequipment islocated.St.LucieUnit2PCM96143relocated cables21001A,powertoBatteryCharger1AfromMCC1A5,cables21810Aand21756Ywhichsupply125voltdcpowerto480voltSwitchgear 1A2and4160voltSwitchgear 1A3forbreakercontrolandoperation, andcables20645Cand20646Awhichsupplypowertomiscellaneous equipment fedfromRTGBoards105and106.Thesecableswererelocated outofthe19.5'ommon Hallway,FireZoneC55Wandthe'B'witchgear Room,FireZoneC56,intothe'A'CEquipment/Inverter RoomthroughtheCableSpreadRoom,FireZoneB52.TheabovecableshavebeenremovedfromTables5.5a,5.5bor5.5c.ampcalc.05/98

'05.0CALCULATION NO.(cont'd)REV.SHEETNO.~St.LuciePlantCableTypesSt.LucieUnit1:Reference Unit1BillofMaterials, 8770-B-325 BOMCableIdentification D02-02D03-03,D03-06,D03-07,D03-08D03-12D15-06D26-02,D26-0652-08BOMSheetSht.D2-1Sht.D3-1Sht.D3-9S}lt.D26-01Sht.D52-01RevisionNo.Description PowerCable,600VCrosslinked Polyethylene PVCJacketforOverallJacket(TeXLPP)ControlCable,600V,Crosslinked Polyethylene PVCJacketforOverallJacket(TeXLPPP)ControlCable,600V,Crosslinked Polyethylene PVCJacketforOverallJacket(TpeXLPPP)PowerCable,5000V(Re.CARS)PowerCable,600V,HTKeriteInsulation, FROverallJacket(TyeHT)ControlCable,600V,FRKeriteInsulation, FROverallJacket(TeMCCC)St.LucieUnit2:Reference Unit2BillofMaterials, 2998-B-325 BOMCableIdentification D15-01,D15-02,D15-03D26-02,D26-03,D26-04,D26-06,D26-07,D26-08D26-10D52-03,D52-08D54-05,D54-06,D54-07D61-05,D61-06D98D99BOMSheetSht.D11-01Sht.D26-01Sht.D26-09Sht.D52-01SIlt.D54-01SIlt.D61-01RevisionNo.3Description PowerCable,5000V,Crosslinked Polyethylene, LeadSheath5NeoreneOverall(TeXLPSLN)PowerCable,600V,HTKeriteInsulation, FROverallJacket(TypeHT)PowerCable,600V,HTKeriteInsulation, FROverallJacket(TeLVPC)ControlCable,600V,FRKeriteInsulation, FROverallJacket(TypeMCCC)PowerCable,600V,Non-shielded, HT,KeriteInsulation FRJacket(TeLVPC)SinalRe:D26,D52,D54Re:D26arapcalc.05/98 CALCULATlON NO.REV.SHEETNO.~6.0(cont'd)ABLE5.2St.LucieUnit1CablesinConduitswith(3)HourThermo-Lag 330-1FireBarrierSystemProtection CABLECONDUITBM/IdTypeUoltInsulation Devicec/c10504A10832A.11601B11002F11002611002H11002J11002M11002N11002P11002Q10504A1155211601B11002F,1488511002F,1488511002H,1488611002H,1488611002M11002M11002P11002PD26-06D15-06D02-02D02-023-1/c¹23-1/c¹4/02-1/c¹5001-1/c¹500ClassRatingM600U5000M600M600D02-02D02-02D02-02D02-021-1/c¹5001-1/c¹5001-1/c¹5001-1/c¹500M600M600M600M600D02-021-1/c¹500M600D02-021-1/c¹500M600D02-021-1/c¹500M600HVE-9BICWP1ABattChgr1BB125VDCBus1BBatt.LeadsIIIII(I1IIIIIIIIIIII125VDCBus1BBatt.Leads2222hlQZES:Reference 8770-B-328, SheetBA,Revision2,"CableandConduitNotes".C-controlorlowvoltagepower(i.e.,120volttoground)M-.-medium voltage(i.e.,480voltnominal)c/c-numberofcurrentcarryingconductors insameconduitListInstallation ampcnlc.05/98 CALCULATION NO.REV.SHEETNO.~5.0(cont'd)St.LucieUnit2CablesinConduitswith(3)HourThermo-Lag 330-1FireBarrierSystemProtection CABLECONDUITBM/IdTypeVoltInsulation c/c20251A20504A20629A20834A20931A20948F20956H20990H21001A21009E21009J21009K21009U21608B21801A21801W21801X21801Y21801Z25071P20504A203362169625019Y20948F22020Q25019Y21001A21009G21009J28161J21009H22020Q21801A21001F,28058J21001F,28058J21001H,28058D21001H,28058DD15-03D98-01D15-06D15-03D26-06D15-01D98-01D26-04D26-04D26-04D26-04D99-04D26-04D98-01D26-04D26-02Class3-1/c¹4/0V3-1/c¹4/0P3-1/c¹4/0V3-1/c¹4/0V2-1/c¹2P3-1/c¹500V2-1/c¹4/0P2-1/c¹2/0P3-1/c¹2/0P2-1/c¹2/0P2-1/c¹2/0P2-1/c¹2/0P2-1/c¹2/0P2-'1/c¹4/0P3-1/c¹2/0P2-1/c¹500PD26-022-1/c¹500PD26-022-1/c¹500PD26-022-1/c¹500PRating5000LPSIP2A600(D26-03)2HVE-9B5000AFWP2A5000ICWP2C600Swgr2A3-55000Xfmr2B2/2BS600(D26-03)DG2AExcCub600Swgr2A2-6600BatChgr2A600InstBus2MA600Inv2A600(D26-04)Inv2C600InstBus2MC600(D26-03)DG2ACP600BatChgr2AA600DCBus2AADCBus2AA600DCBus2AADCBus2AA600DCBus2AADCBus2AA600DCBus2AADCBus2AA4hKEESReference 2998-B-271, Sheet2-14,Revision2,"Electrical GeneralInstallation Notes".L-lowlevelsignal,notpowerC-controlorlowvoltagepower(i.e.,120volttoground)P-mediumvoltagepower(i.e.,480voltnominal)V-highvoltage(i.e.,4160voltnominal)c/c-numberofcurrentcarryingconductors insameconduit()D-¹(cablesize)duplexconstruction

()T-¹(cablesize)triplexed construction

()STP-¹(cablesize)shieldedtwisted-pair ampcnlc.05/98 CALCULATlON NO.REV.SHEETNO.~5.0(cont'd)HRBLER4St.LucieUnit2CablesinConduitswith(1)HourThermo-Lag 330-1FireBarrierSystemProtection CABLECONDUITBM/IdTypeVoltInsulation c/c20292A20597J20597N20630A20833A20946F20948A21010U21118A21643G21643R25050W20292A20597N20597N28093C2155322006S20948A21010H22020Q22016H21643R25067MD26-08D26-03D99-01D15-03D15-03D15-01D15-01D26-04D98-10D26-10D26-10D26-041-3/c¹12T4-1/c¹4/03-1/c¹4/03-1/c¹4/Q3-1/c¹4/03-1lc¹5003-1/c¹5002-1/c¹2/02-1/c¹42-1/c¹42-1/c¹42-1/c¹2/0ClassRatingP600P600P600(D26-03)V5000V5000V5000V5000P600P600(D26-10)P600P600600HydzPmp2B1-TH2Recomb7H2Recomb7AFWP2B3ICWP2B3Xfmr2A53Xfmr2B2/2B53InstBus2MD2DG2AAnn6RM/RS26-1 2RM/RS26-18 2125VBusMD3ampcalc.05/98 CALCULATlON NO.REV.SHEETNO.~5.0(cont'd)St.LucieUnit1(3)HourThermo-Lag 330-1FireBarrierSystemWrapRef.CableAffectedDeviceCableSizeCableHp/LoadResistance KVAAmps/1000ft(lt)(Ref2.98-2.100ACF(Ref.2.20)ACF'Ref.C/C2.110)C/CDeratingCableAmpacity(ic)IEEERev2DeratedDeratedAmpacityAmpacity(I')(I')Rev2MaximumDeratedHeatLoadwatts/ft)

ActualHeatLoad(Watts/ft)

MarginMarginRcv22.9310504AHVE-9B3-1/CA20.21134049.80.97331.011289.6108.9765.551.5291.02122.402.611002F11002G2.9210832A2.611601BICWPIACHRGRIBB125VDCTESTPNLIB3-1/CI4/02-1/CF500l-l/Cf500II/CgSOO0.02780.027868KVA2282130.065560081.80.80.69.9733.942.5121.01.01.0398398190.4231.574318.4374.12549.24405.967.6724.631.295.525.34143.95185.89111.3064.09114.7090.592.611002H11002J125VDCTESTPNLIBI-I/Cf5001-1/Cf5000.0278213.69.5121.0398549.24405.9624.635.34114.7090.592.62.611002M11002N11002P11002125VDCBUSIB125VDCBUSIBl-l/C//500l-l/C$500l-l/Cf500l-l/Cft5000.02780.0278213213.80.80.942.9421.01.0398398318.4374.12318.4374.1224.6324.635.34,5.34114.7075.64114.7075.64hlates4batterychargersarecurrent-limited to315ampsoutput,protected conduit11601Bwithcable11601BtoCharger1BB,sameloadas11002B1.Conduitsprotected with3-hourwrapnotrequiredandnotupgraded.

Cables10504Aand10832A(AFC'0.973)Ref.2.110anpcalc.05/98 CALCULATION NO.REV.SHEETNO.~5.0(cont'd)Iah~A~St.LucieUnit2(3)HourThermo-Lag 330-1FireBarrierSystemWrapRef.CableAffectedDeviceCableSizeCableResistance

/1000ft(Ref2.98-2.100Hp/KVALoadAmps(lr)ACF(Ref.2.20)ACF'Ref.2.110)C/CC/CDeratingCableAmpacity(lc)IEEERev2DeratedDeratedMaximumAmpacityAmpacity(I')DeratedHeat(I')Rev2Load(Watts/It)

ActualHeatLoad(Watts/II)

%Margin%MarginRev22.9420251A2.9720504A2.9420629ALPSIP2A2HVE-9BAFWP2A3-1/C//4/03-1/Cg4/03-1/C$4/00.06550.06550.065540050606535047.80.80.800.9520.9520.9521.01.01.0190.4226.5767.6725190.4226.5767.6725190.4226.5767.67250.49130.83020.4341295.20320.43353.15248.58382.082.9520834AICWP2C3-1/Cg4/00.065560082.4.800.9521.0190.4226.5767.67251.3342139.81174.972.192.942.720948F20956Ha21118A21608B2.720931ASWGR2A3STASVCXfinr2B2/2BSDG2AEXCCUB2-1/Cg23-1/CF5002-1/CI4/02-1/CS42-IICI/'4IO 0.21130.02780.06551933KVA50.0negligible 6.0.800.5.80268.800.9520.9520.9520.801.00.80112398318.4378.896152.32181.26089.23709.820871.6885.29924.73900.00020.98250.01411487624.1816959.8441.38216.16262.522.1320990HSWGR2A22-1/C//4/00.06550.5.800.9520.80152.32181.26086.54723151636152.162.2421009E2.621009JINVTR2ACIn)2-1/Ck2/0INSTBUS2MA2-1/CIt2/00.10530.105310KVA24.7.80.800.9520.9521.01.01731734.4157138.4164.696138.4164.6964.41570.12850.288348b23566.79291.35345.12.2621009K2.2421009U2.1321801W21801XINVTR2CCIn2-1/Ctr2/0INSTBUS2MC2-1/Cg2/0125VDCBUS2AA2-1/Cf5002-1/C$5000.10530.10530.027810KVA.8028.4.80278.690.952V0.9520.9521.01.00.80173173796138.4164.6964.4157138.4164.6964.4157439.392606.233623.45470.28830.16998.5940291.35409.8665.20345.12479.92118.072.1321801Y21801Z125VDCBUS2AA2-1/Ck'5002-1/C$5000.0278278.690.9520.80796439.392606.233623.45478.594065.20118.07ampcalc.05/98 CALCULATION NO.REV.SHEETNO.~5.0(cont'd)St.LucieUnit2(1)HourThermo-La 330-1FireBarrierSstemWraRef.CableAffectedDeviceCableSizeCableResistance

/1000ft(Ref2.98-2.100HP/LoadACFKVAAmps(Ref.(lt)2.20)ACF'Ref.2.110)Rev.2CICC/CDeratingCableAmpacity(Ic)IEEERev2DentedAmpacity(I')DeratedMaximumActualHeatAmpacity(I')DeratedHeatLoadRev.2Load(Watts/ft)

(Watts/It)

%Margin%MarginRev22.9620292A2.1720597J2.9020597N2.9420630A2.9420833AHYDRAZINE PUMPH2RECOMBAFWP2BICWP2B1-3/Ctr12T4-1/C//4/03-1/C8'4/03-1/C/14/03-1/C//4IO2.10580.06550.06550.065534.660082.4.8975KVA35047.89.94.94.94.9431.070.7031.031.028148.274211.82211.8226.32156.6044.2110.869.509.500.13373.71390.43411.3342461.0970.98367.72166.78472.1774.00376.00171.502.1920946F2.94STA.SVCXfmr2AS3-1/C//5000.02781933KVA268.89.9431.0398354.22374.1211.435.9938.1539.602.1920948A2.942.2421010U2.1321118ASTASVCXfmr2B2/2BS3-1/Ct/500120VACINSTBUS2-1/CI/2/02MDDG2AAnn2I/C4'40.02780.10530.33641933KVA10KVA268.891.028.4.89.94.94.9431.021.060.8039817385354.22153.9760.52374.12162.6211.435.470.16990.00238.15467.22616639.60472.616292.002.2221643GRM/RS-26-1 2-1/C$40.33642.5.89.9421.08575.6579.94.130.00423032.803096.002.2221643R2.72SOSOW2.24RM/RS-26-18 2-1/CI/4125YDCBUSMD2-1/C//2/00.33640.10532.5.891.5.94.9421.031.08575.65153.9779.9162.624.138.200.00420.0013032.80106393096.0010741.33anpcalc.05/98 CALCULATION NO.REV.SHEETNO.~6~0E1KULXSTheresultsshowninTables5.5.a.,5.5.b.and5.5.c.indicatethatwhenusingnewerampacitycorrection factor(ACF)asdetermined incalculation, PTN-BFJM-96-005, forupgradedThermo-Lag firebarrierinstallations, sufficient marginexistsbetweenoperating cableloadsandcablecurrentcarryingcapacity(ampacity).

Thiscalculation revisited priorcalculations, andAppendixRandRG1.75documents toeliminate theconservatism thatexistedintheearliercalculations whenconsidering theloadonaspecificcable.Ampacityvaluesusedinthiscalculation areloadsthatexistlongerthan60seconds;i.e.,donotincludethebatteryorvalveloadsduringthefirstminutewhicharereducesignificant'ly forlongeroperation.

Aslistedabove,thesmallestmarginforSt.LucieUnit1Thermo-Lag (3)hourupgradedwrappedconduitsis~>.Thismarginisforthe125voltDCpowercablesfromBattery1AtoBatteryTestPanel1Aforsupplying 125voltDCbus1A.Loadsonthesecablesaresteadystateloadsafterthefirstminuteofoperation whenthecableissubjected tocontinuous loads.Loadsonthebatterycablearehigherinthefirstminuteduetocyclingofvalvesandothermotors.ThesmallestUnitNo.2marginfor(3)hourupgradedwrappedconduitsisM~Qforthe4160voltpowerfeedercablestoStationServicesTransformers 2B2/2B5.Thisvaluecontainssomeconservatism sinceitassumes100%transformer loading.For(1)hourupgradedwrappedconduitsinSt.LucieUnit2,thesmallestmarginis39~forthe4160voltfeedtoStationServicesTransformer 2A5.Thisvalueincludesconservatism, similartothemargintoTransformers 2B2/2BS,sinceitassumes100~transformer loading.Theoriginalcalculations forcablederatinginSt.LucieUnit1andUnit2usedavalueconsidered conservative at15%.Thiscalculation hasdetermined thatacceptable powercablemarginsexistforinstalled cablesinSt.LuciePlantUnit1andUnit2whenusingderatingvaluesof11%for(1)hourfirebarriersand20%for(3)hourfirebarriersassumingtheinstallation ofThermo-Lag 330-1andThermo-Lag 770-1upgradefirebarriersystems.Arevisiontothecablesinconduits21001F-4" and21001H-4" wasincludedinRevision1tothiscalculation.

Theseconduitswerefoundtobeinabankedconfiguration forpartoftheirroute.Forconservatism, theampacityderatingfactorforcabletrayswasappliedtotheseconduitsections.

Theresultant ampacitymarginchangedfrom91.53%to65.20%usingthecabletrayderatingfactorof31%'.ampcalp.05/98 woI CALCULATION NO.REV.SHEETNO.~6~0RRZULXRRevision1concluded thatinstalled conduitconfigurations atStLucieplantareboundedbytestperformed atOmegalaboratories forTexasUtilities'omanche PeakNuclearPlant.Revision2tothiscalculation resultedinlowermarginsbasedonthecablecurrentcarryingcapacityforambientindoorconditions ofNoSun-0Ft/s'irflow/ventilation.

Inaddition, fieldwalkdownsforenhancements oftheThermo-Lag firebarriersonconduits11002F-3"and11002H-3" intheUnit1ReactorAuxiliary BuildingCableSpreading Room,identified sectionsoftheseconduitswhereacommonenclosure extendedoverbothconduits.

Cablesintheseconduitswerederatedusingtheexistingcabletrayderatingfactorstodetermine margins.Asaresultoftherecalculation ofcircuitsprotected withThermo-Lagfirebarriers, theresultant lowestampacitymargininUnit1forthree-hour (3)firebarriersis~99'orthecablesinconduit11601B-3".

InUnit2,thelowestmarginforconductors inconduitswiththree-hour(3)protection is~~forthepowerfeedertoStationServicetransformer 2B2/2B5.Thesmallestmarginwithone-hour(1)protection is~~,forthepowerfeedstoStationServicestransformers 2A5and2B2/2B5.Basedonthemoreconservative valuesusedintheSt.Lucieampacityderatingcalculation aboveandthereviewoftheFPCampacityderatingtest,theconfiguration andampacityderatingforSt.LucieisboundedbytheFPCtests.ampcalc.05/98

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