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| {{#Wiki_filter:4,CATEGORY1REGULATINFORMATIONDISTRZBUTZONII.'STEM(RIDE)ACCESSIONNBR:9704100055DOC.DATE:97/04/04NOTARIZED:NODOCKETFACIL:50-335St.LuciePlant,Unit1,FloridaPowerSLightCo.05000335AUTH.NAMEAUTHORAFFILIATIONSTALL,J.A.FloridaPower&LightCo.RECIP.NAMERECIPIENTAFFILIATIONDocumentControlBranch(DocumentControlDesk) | | {{#Wiki_filter:4,CATEGORY1REGULATINFORMATION DISTRZBUTZONII.'STEM (RIDE)ACCESSION NBR:9704100055 DOC.DATE: |
| | 97/04/04NOTARIZED: |
| | NODOCKETFACIL:50-335 St.LuciePlant,Unit1,FloridaPowerSLightCo.05000335AUTH.NAMEAUTHORAFFILIATION STALL,J.A. |
| | FloridaPower&LightCo.RECIP.NAME RECIPIENT AFFILIATION DocumentControlBranch(Document ControlDesk) |
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| ==SUBJECT:== | | ==SUBJECT:== |
| Providesresponseto'NRCRAIdtd970123recycle14SGruntimeanalysisadoseasssessmentusingStdReviewPlanSection15.1.5methodology.DISTRIBUTIONCODE:A001DCOPIESRECEIVED:LTRENCLSIZE:TITLE:ORSubmittal:GeneralDistributionNOTES:ERECIPIENTIDCODE/NAMEPD2-3LAWIENS,L.INTERNAL:ACRSNRR/DE/ECGB/ANRR/DRCH/HICBNRR/DSSA/SRXBOGC/HDS3EXTERNAL:NOACCOPIESLTTRENCL1111111111111011RECIPIENTIDCODE/NAMEPD2-3PD~ECENTEROl.RR/DEEMCBNRR/DSSA/SPLBNUDOCS-ABSTRACTNRCPDRCOPIESLTTRENCL111111111111DENOTETOALL"RIDS"RECIPIENTS:PLEASEHELPUSTOREDUCEWASTE.TOHAVEYOURNAMEORORGANIZATIONREMOVEDFROMDISTRlBUTIONLISTSORREDUCETHENUMBEROFCOPIESRECEIVEDBYYOUORYOURORGANIZATION,CONTACTTHEDOCUMENTCONTROLDESK(DCD)ONEXTENSION415-2083TOTALNUMBEROFCOPIESREQUIRED:LTTR14ENCL13 0C~4'lTIUi FloridaPower&LightCompany,6501SouthOceanDrive,JensenBeach,FL34957April4,1997L-97-9010CFR50.4U.S.NuclearRegulatoryCommissionAttn:DocumentControlDeskWashington,D.C.20555.RE:St.LucieUnit1DocketNo.50-335RequestforAdditionalInformationNo.1rRAttachment1providestheFloridaPowerEcLightCompany(FPL)responsetotheNRCrequestforadditionalinformation(RAI)datedJanuary,23,1997.FPLletter,L-97-47datedFebruary21,1997,notifiedtheNRCofthescheduleforprovidingtherequestedinformation.Attachment2providestheSt.LucieUnit1doseassessmentusingStandardReviewPlanSection15.1.5methodology.Thedoseassessment,preparedbyScientificApplicationsInternationalCorporation(SAIC)forFPL,isSAICreport,SAIC-97-1008,AnalysisoftheRadiologicalConsequencesofaMainSteamLineBreakOutsideContainmentfortheSt.LucieUnitINuclearPowerPlantUsingiVUREG-0800StandardReviewPlan15.1.5AppendixA,datedMarch14,1997.Thereportprovidesadosecalculationforaonegpmprimarytosecondaryleakforapostulatedmainsteamlinebreak(MSLB)outsidecontainment.Thedoseswerenormalizedtoonegpmsothatotherdosescouldbedeterminedbylinearextrapolationforhigherleakrates.Theresultsshowthat,forthepostulatedMSLBwithinducedsteamgeneratortubeleakagefollowing15monthsofoperation(approximatelythreegpmleakrate),theresultingdoseisconsideredacceptableunderthependingsteamgeneratorrulemakingcriteria,inthattheresultsdonotexceedthe10CFR100and10CFR50AppendixAgeneraldesigncriteria(GDC)19accidentdoselimits.DuringaJuly3,1996,meetingwiththeNRC,FloridaPowerandLightCompany(FPL)committedtoprovidetheresultsoftheSt.LucieUnit1steamgeneratorruntimeanalysistotheNRCwithin90daysofthestartupfromthe1996refuelingoutage(SL1-14).FPLletterL-96-273datedOctober24,1996,providedFPL'splanstooperatetheUnit1steamgeneratorsforfifteen(13)months(i.e.,throughOctober23,1997).TheruntimeanalysiswasaphysicallybasedanalysisthatusedtheguidancecontainedinDraftRegulatoryGuide(RG)1.121,GenericLetter-I95-05,andtheDraftRegulatoryGuide,SteamGeneratorTubeIntegrity.9704i00055970404PDRADOCK,05000335F'DRanFPLGroupcompanylll13llllllllllllllillljlllllllIiHllIllllllll tIta. | | Providesresponseto'NRCRAIdtd970123recycle14SGruntimeanalysisadoseasssessment usingStdReviewPlanSection15.1.5methodology. |
| St.LucieUnitIDocketNo.50-335L-97-90Page2Thisletterdoesnotcontainanynewregulatorycommitments.FPLispreparedtomeetwiththeNRCtodiscusstheresultsofthisandanyotherpreviouslysubmittedanalyses.Pleasecontactusifyouhaveanyadditionalquestions.Verytrulyyours,J.A.StallVicePresidentSt.LuciePlantJAS/GRMAttachmentscc:RegionalAdministrator,RegionII,USNRCSeniorResidentInspector,USNRC,St.LuciePlant St.LucieUnit1DocketNo.50-335L-97-90Attachment1Page1Cycle14SteamGeneratorRuntimeAnalysisfriinlInfinNRCQuestion1RegulatoryGuide(RG)1.78addressestheimpactofchemicalreleasesuponthecontrolroomoperators.ItisstatedinEnclosure3thatthemodelsfordosecalculationweretakenfromthisRG,PleaseclarifyhowthisRGwasutilizedinthisanalysis.FPLResponse1ThisregulatoryGuidewasusedprimarilytocategorizethecontrolroombythetypeofprotectionreferredtoasA,B,orC.Sincetheleaktightnessisindependentofthetypeofairbornematerial,theclassificationsysteminRG1.78providesagoodinitialassessmentofthetypeofprotectioninthedesign.TheformulasfordoseconcentrationwereappliedasrecommendedinRG1.145whichprovidesimprovedmethodsoverRG1.4.NRCQuestion2TheselectionofmeteorologicaldataforSt.Lucieshouldnotbelimitedtoonlyoneyear'worthofdatainordertominimizetheeffectsofannualperturbations.Itisrequestedthataminimumoffiveyearsbeused,orprovidejustificationfortheuseoflessdata.FPLResponse2Weagreethatafiveyearsamplewillproduceabetter.representationofthelocalconditionsneededtoestimatetheX/Qforanysite.InthecaseofSt.Lucietheyearselectedwasclearlyconservativeforselectingthe95%confidencelevel(5%exceedancelevel).For1996thecalculated95%levelwasslightlygreaterthan1E-4,whereasthefiveyearaverageintheFSARwas8.55E-5.Thus,theselectedyearwasconservativeby15%.Asaresultofthisquestionwealsoreviewedthelastfiveyearsofmeteorologicaldatatodeterminethefrequencyofthemostrestrictivestabilityclasses,GandF.WefoundthatthefrequencyforClassGandF(fractionoftimepercentage)waslowerforallyearsthantheselectedyear1995.Theselectedyearof1995istheonlyonewherethetotalfractionofGandFexceed5%.Thus,theselectedyearproducesthemostconservativeX/Qonayearlybasisforthepurposeofthecalculations. | | DISTRIBUTION CODE:A001DCOPIESRECEIVED:LTR ENCLSIZE:TITLE:ORSubmittal: |
| St.LucieUnit1DocketNo.50-335L-97-90Attachment1Page2Table1ReviewofmeteoroloicaldataforSt.LucieYear1991(avebyquarter)%ClassF3.509%ClassG0.77119923.4701.15319933.4480.9521994(avebyquarter)1995usedinanalsis)FiveYearAverae2.724.7853.3860.452.4840.962NRCQuestion3ThemannerinwhichthecontrolroomengineeredsafetyfeaturesystemwasdescribedasoperatingisdifferentthanthatdescribedinNUREG/CR4191,"SurveyofLicenseeControlRoomHabitabilityPractices."Itisnotclearwhetherthecontrolroomwasincorrectlymodeledorthemannerofoperationwaschanged.Pleaseexplain.FPLResponse3ThecontrolroomatSt.LucieUnit1meetstheobjectivesinthechecklistitemsinNUREG/CR4191.Periodicscheduledtestingindicatesthatanairexchangerateoflessthan0.25volume/hourduringanisolatedconditionproducesacontrolroompressureof1/8incheswater.Forthereferenceprobabilisticassessmentcalculationamodelwasusedwhichlumpedallinputsandoutputsintosingleparameters.Thetailsofthedistributionweretakenaslargeenoughtocovervariationintiming.Theprobabilisticassessmentusedrealisticdesignvaluesfortheparametersandthenassignedrangestoassessvariationsinthevalues.DatafortherealisticoperationarenotnecessarilythesameastheconservativevaluesusedforaccidentanalysisassumptionsinChapter15wheretheloss-'of-coolant-accident(LOCA)sourcetermisexpectedtoboundotheraccidentdosesforthecontrolroom.Hence,thesimplifiedprobabilisticmodelingapproachshowssignificantmarginovertheassumptionsusedintheSRPtypeanalysiswhichaccountsforcontrolroomfeaturesusingaccidentboundingassumptions. | | GeneralDistribution NOTES:ERECIPIENT IDCODE/NAME PD2-3LAWIENS,L.INTERNAL: |
| | ACRSNRR/DE/ECGB/A NRR/DRCH/HICB NRR/DSSA/SRXB OGC/HDS3EXTERNAL: |
| | NOACCOPIESLTTRENCL1111111111111011RECIPIENT IDCODE/NAME PD2-3PD~ECENTEROl.RR/DEEMCBNRR/DSSA/SPLB NUDOCS-ABSTRACT NRCPDRCOPIESLTTRENCL111111111111DENOTETOALL"RIDS"RECIPIENTS: |
| | PLEASEHELPUSTOREDUCEWASTE.TOHAVEYOURNAMEORORGANIZATION REMOVEDFROMDISTRlBUTION LISTSORREDUCETHENUMBEROFCOPIESRECEIVEDBYYOUORYOURORGANIZATION, CONTACTTHEDOCUMENTCONTROLDESK(DCD)ONEXTENSION 415-2083TOTALNUMBEROFCOPIESREQUIRED: |
| | LTTR14ENCL13 0C~4'lTIUi FloridaPower&LightCompany,6501SouthOceanDrive,JensenBeach,FL34957April4,1997L-97-9010CFR50.4U.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, D.C.20555.RE:St.LucieUnit1DocketNo.50-335RequestforAdditional Information No.1rRAttachment 1providestheFloridaPowerEcLightCompany(FPL)responsetotheNRCrequestforadditional information (RAI)datedJanuary,23, 1997.FPLletter,L-97-47datedFebruary21,1997,notifiedtheNRCofthescheduleforproviding therequested information. |
| | Attachment 2providestheSt.LucieUnit1doseassessment usingStandardReviewPlanSection15.1.5methodology. |
| | Thedoseassessment, preparedbyScientific Applications International Corporation (SAIC)forFPL,isSAICreport,SAIC-97-1008, AnalysisoftheRadiological Consequences ofaMainSteamLineBreakOutsideContainment fortheSt.LucieUnitINuclearPowerPlantUsingiVUREG-0800StandardReviewPlan15.1.5AppendixA,datedMarch14,1997.Thereportprovidesadosecalculation foraonegpmprimarytosecondary leakforapostulated mainsteamlinebreak(MSLB)outsidecontainment. |
| | Thedoseswerenormalized toonegpmsothatotherdosescouldbedetermined bylinearextrapolation forhigherleakrates.Theresultsshowthat,forthepostulated MSLBwithinducedsteamgenerator tubeleakagefollowing 15monthsofoperation (approximately threegpmleakrate),theresulting doseisconsidered acceptable underthependingsteamgenerator rulemakingcriteria, inthattheresultsdonotexceedthe10CFR100and10CFR50AppendixAgeneraldesigncriteria(GDC)19accidentdoselimits.DuringaJuly3,1996,meetingwiththeNRC,FloridaPowerandLightCompany(FPL)committed toprovidetheresultsoftheSt.LucieUnit1steamgenerator runtimeanalysistotheNRCwithin90daysofthestartupfromthe1996refueling outage(SL1-14). |
| | FPLletterL-96-273datedOctober24,1996,providedFPL'splanstooperatetheUnit1steamgenerators forfifteen(13)months(i.e.,throughOctober23,1997).Theruntimeanalysiswasaphysically basedanalysisthatusedtheguidancecontained inDraftRegulatory Guide(RG)1.121,GenericLetter-I95-05,andtheDraftRegulatory Guide,SteamGenerator TubeIntegrity. |
| | 9704i00055 970404PDRADOCK,05000335 F'DRanFPLGroupcompanylll13llllllllllllllillljlllllllIiHllIllllllll tIta. |
| | St.LucieUnitIDocketNo.50-335L-97-90Page2Thisletterdoesnotcontainanynewregulatory commitments. |
| | FPLispreparedtomeetwiththeNRCtodiscusstheresultsofthisandanyotherpreviously submitted analyses. |
| | Pleasecontactusifyouhaveanyadditional questions. |
| | Verytrulyyours,J.A.StallVicePresident St.LuciePlantJAS/GRMAttachments cc:RegionalAdministrator, RegionII,USNRCSeniorResidentInspector, USNRC,St.LuciePlant St.LucieUnit1DocketNo.50-335L-97-90Attachment 1Page1Cycle14SteamGenerator RuntimeAnalysisfriinlInfinNRCQuestion1Regulatory Guide(RG)1.78addresses theimpactofchemicalreleasesuponthecontrolroomoperators. |
| | ItisstatedinEnclosure 3thatthemodelsfordosecalculation weretakenfromthisRG,PleaseclarifyhowthisRGwasutilizedinthisanalysis. |
| | FPLResponse1Thisregulatory Guidewasusedprimarily tocategorize thecontrolroombythetypeofprotection referredtoasA,B,orC.Sincetheleaktightness isindependent ofthetypeofairbornematerial, theclassification systeminRG1.78providesagoodinitialassessment ofthetypeofprotection inthedesign.Theformulasfordoseconcentration wereappliedasrecommended inRG1.145whichprovidesimprovedmethodsoverRG1.4.NRCQuestion2Theselection ofmeteorological dataforSt.Lucieshouldnotbelimitedtoonlyoneyear'worthofdatainordertominimizetheeffectsofannualperturbations. |
| | Itisrequested thataminimumoffiveyearsbeused,orprovidejustification fortheuseoflessdata.FPLResponse2Weagreethatafiveyearsamplewillproduceabetter.representation ofthelocalconditions neededtoestimatetheX/Qforanysite.InthecaseofSt.Lucietheyearselectedwasclearlyconservative forselecting the95%confidence level(5%exceedance level).For1996thecalculated 95%levelwasslightlygreaterthan1E-4,whereasthefiveyearaverageintheFSARwas8.55E-5.Thus,theselectedyearwasconservative by15%.Asaresultofthisquestionwealsoreviewedthelastfiveyearsofmeteorological datatodetermine thefrequency ofthemostrestrictive stability classes,GandF.Wefoundthatthefrequency forClassGandF(fraction oftimepercentage) waslowerforallyearsthantheselectedyear1995.Theselectedyearof1995istheonlyonewherethetotalfractionofGandFexceed5%.Thus,theselectedyearproducesthemostconservative X/Qonayearlybasisforthepurposeofthecalculations. |
| | St.LucieUnit1DocketNo.50-335L-97-90Attachment 1Page2Table1Reviewofmeteorolo icaldataforSt.LucieYear1991(avebyquarter)%ClassF3.509%ClassG0.77119923.4701.15319933.4480.9521994(avebyquarter)1995usedinanalsis)FiveYearAverae2.724.7853.3860.452.4840.962NRCQuestion3Themannerinwhichthecontrolroomengineered safetyfeaturesystemwasdescribed asoperating isdifferent thanthatdescribed inNUREG/CR4191,"SurveyofLicenseeControlRoomHabitability Practices." |
| | Itisnotclearwhetherthecontrolroomwasincorrectly modeledorthemannerofoperation waschanged.Pleaseexplain.FPLResponse3ThecontrolroomatSt.LucieUnit1meetstheobjectives inthechecklistitemsinNUREG/CR4191.Periodicscheduled testingindicates thatanairexchangerateoflessthan0.25volume/hour duringanisolatedcondition producesacontrolroompressureof1/8incheswater.Forthereference probabilistic assessment calculation amodelwasusedwhichlumpedallinputsandoutputsintosingleparameters. |
| | Thetailsofthedistribution weretakenaslargeenoughtocovervariation intiming.Theprobabilistic assessment usedrealistic designvaluesfortheparameters andthenassignedrangestoassessvariations inthevalues.Datafortherealistic operation arenotnecessarily thesameastheconservative valuesusedforaccidentanalysisassumptions inChapter15wheretheloss-'of-coolant-accident (LOCA)sourcetermisexpectedtoboundotheraccidentdosesforthecontrolroom.Hence,thesimplified probabilistic modelingapproachshowssignificant marginovertheassumptions usedintheSRPtypeanalysiswhichaccountsforcontrolroomfeaturesusingaccidentboundingassumptions. |
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Category:CORRESPONDENCE-LETTERS
MONTHYEARML17241A5001999-10-21021 October 1999
Forwards Rev 3 to Emergency Response Data Sys (ERDS) Data Point Library for St Lucie Unit 1.Rev Provides Replacement Pages & Follows Format Recommended by NUREG 1394, ERDS Implementation, Rev 1,App C
ML17309A9981999-10-19019 October 1999
Forwards Revised Epips,Including Rev 3 to EPIP-10 & Rev 25 to HP-202.EPIP-10 Added Onsite Monitoring Points,Made Administrative Changes & Incorporated New Attachments & HP-202 Added Red Team Survey Points
ML20217F6171999-10-0808 October 1999
Forwards Insp Repts 50-335/99-11 & 50-389/99-11 on 990827 & 990907-09.No Violations Identified.Matl Encl Contained Safeguards Info as Defined by 10CFR73.21 & Disclosed to Unauthorized Individuals Prohibited by Section 147 of AEA
ML17241A4811999-10-0101 October 1999
Reports Number of Tubes Plugged During Unit 1 Refueling Outage SL1-16,per TS 4.4.5.5.a
ML20212M1601999-09-28028 September 1999
Refers to 990908 Engineering Meeting Conducted at NRC Region II to Discuss Engineering Issues at Lucie & Turkey Point Facilities.List of Attendees & Copy of Presentation Handout Encl
ML17241A4701999-09-25025 September 1999
Forwards Info Requested by NRC Staff During 990916 Telcon to Complete Staff Review of Request for risk-informed Extension of Action Completion/Aot Specified for Inoperable Train of LPSI Sys at Plant
ML17241A4721999-09-24024 September 1999
Forwards Rev 1 to Plant Change/Mod (PCM) 99016 to St Lucie Unit 1,Cycle 16 COLR, IAW TS 6.9.1.11.d.Refueling Overhaul Activities Are Currently in Progress & Reactor Operations for Cycle 16 Are Scheduled to Commence in Oct 1999
ML17241A4681999-09-22022 September 1999
Requests Restriction Be Added to Senior Operator License SOP-21093 for TE Bolander.Nrc Forms 369,encl.Encl Withheld Per 10CFR2.790(a)(6)
ML17241A4671999-09-20020 September 1999
Forwards Completed NRC Form 536, Operator Licensing Exam Data, for St Lucie Units 1 & 2,as Requested in Administrative Ltr 99-03, Preparation & Scheduling of Operator Licensing Exams.
ML17241A4581999-09-13013 September 1999
Forwards Info Requested by NRC Staff During 990630 & 0816 Telcons,To Complete Review of Proposed License Amend for Fuel Reload Process Improvement Program
ML17241A4531999-08-31031 August 1999
Informs That No Candidates from St Lucie Plant Will Be Participating in PWR Gfes Being Administered on 991006
ML17241A4521999-08-31031 August 1999
Withdraws Relief Request 16 & Suppl Relief Request 15 with Info Requested During 990526 Telephone Conference Re ISI Insp Plan,Third 10-yr Interval
ML17241A4501999-08-26026 August 1999
Informs That FPL Has Reviewed Reactor Vessel Integrity Database,Called RVID2,re Closure of GL 92-01,rev 1,suppl 1. Requested Corrections & Marked Up Pages from Rvid 2 Database Summary Repts That Correspond to Comments,Attached
ML17241A4371999-08-13013 August 1999
Forwards fitness-for-duty Program Performance Data for six- Month Period Ending 990630,per 10CFR26.71(d)
ML17241A4461999-08-11011 August 1999
Requests That W Rept Entitled, Evaluation of Turbine Missile Ejection Probability Resulting from Extending Test Interval of Interceptor & Reheat Stop Valves at St Lucie Units 1 & 2, Be Withheld from Public Disclosure
L-99-171, Forwards Rev 56 to Physical Security Plan.Summary of Changes & Marked Up Copy of Revised Pages Also Encl.Encls Withheld from Public Disclosure Per 10CFR2.790(a)(3)1999-07-29029 July 1999
Forwards Rev 56 to Physical Security Plan.Summary of Changes & Marked Up Copy of Revised Pages Also Encl.Encls Withheld from Public Disclosure Per 10CFR2.790(a)(3)
ML17309A9911999-07-26026 July 1999
Forwards Revised EPIPs & Revised Procedures That Implement Emergency Plan as Listed.Procedures Provides Instruction for Operational Support Ctr (OSC) Chemistry Supervisor to Establish Remote Labs at Locations Specified
ML17241A4471999-07-22022 July 1999
Requests That Rev 1 to WCAP-14732 & Rev 1,Add 1 to WCAP-14732 Be Withheld from Public Disclosure
ML17241A4221999-07-22022 July 1999
Forwards List of Proposed Licensing Actions for St Lucie Units 1 & 2,planned During Fys 2000 & 2001,in Response to Administrative Ltr 99-02, Operating Reactor Licensing Action Estimates.
ML17241A4151999-07-22022 July 1999
Forwards Revised Relief Request 25 for Second 10-yr ISI Interval for Unit 2
ML17241A4101999-07-16016 July 1999
Forwards FP&L Supplemental Response to NRC Request for Info Re Y2K Readiness at Nuclear Power Plants
ML17309A9881999-07-0707 July 1999
Forwards Rev 5 to EPIP-03, Emergency Response Organization Notification/Staff Augmentation. Rev 5 to EPIP-03 Was Revised to Transfer EP Responsibilities from Training Manager to Protection Svcs Manager
ML20209F1541999-07-0606 July 1999
Informs That NRC in Process of Conducting Operational Safeguards Response Evaluations at Nuclear Power Reactors. Plant Chosen for Such Review Scheduled for Wk of 990823-26
ML17241A4011999-06-30030 June 1999
Forwards Info Copy of Florida Wastewater Permit (FL0002208) (Formerly NPDES Permit) Mod,Which Was Issued by Florida Dept of Environ Protection on 990604
ML17241A3971999-06-30030 June 1999
Forwards Suppl Response to GL 96-05, Periodic Verification of Design-Basis Capability of Safety-Related Movs, as Requested in 990317 Ltr
ML17355A3661999-06-30030 June 1999
Forwards Florida Power & Light Topical QA Rept, Dtd June 1999.Encl I Includes Summary of Changes Made to Topical QA Rept Since 1998
ML17241A3951999-06-29029 June 1999
Provides Response to NRC Request for Info Re Y2K Readiness at Nuclear Power Plants.Gl 98-01, Y2K Readiness of Computer Sys at Nuclear Power Plants, Requested Response on Status of Facility Y2K Readiness by 990701.Disclosure Encl
ML17241A3731999-06-17017 June 1999
Supplements Relief Requests 4,11 & 13 for Third ten-year ISI Interval with Info Requested During 990526 Telcon.Expedited Review Is Requested by 990730 to Avoid Negatively Impacting Upcoming St Lucie Unit 1 Refueling Outage (SL1-16)
ML17241A3641999-06-14014 June 1999
Submits Supplement to Relief Request 24 with Info Requested by Nrc.In Addition Relief Request 24 Is Identical to St Lucie Unit 1 Relief Request 4 for Third ISI Interval Being Supplemented by FPL Ltr L-99-139
ML20195F3871999-06-11011 June 1999
Final Response to FOIA Request for Documents.App a Records Being Withheld in Entirety (Ref FOIA Exemption 5)
IA-99-247, Final Response to FOIA Request for Documents.App a Records Being Withheld in Entirety (Ref FOIA Exemption 5)1999-06-11011 June 1999
Final Response to FOIA Request for Documents.App a Records Being Withheld in Entirety (Ref FOIA Exemption 5)
L-99-129, Forwards Rev 55 to Physical Security Plan,Summary of Changes & Marked Up Copy of Revised Pages.With Directions for Incorporating Rev Into Plan & Copies of Replacement Pages.Rev Withheld,Per 10CFR2.790(a)(3)1999-06-0909 June 1999
Forwards Rev 55 to Physical Security Plan,Summary of Changes & Marked Up Copy of Revised Pages.With Directions for Incorporating Rev Into Plan & Copies of Replacement Pages.Rev Withheld,Per 10CFR2.790(a)(3)
ML17241A3561999-06-0707 June 1999
Forwards Rept Containing Brief Description & Summary of SEs for Changes,Tests & Experiments Which Were Approved for Unit 3 During Period of 970526-981209
ML17241A3601999-06-0707 June 1999
Forwards Correction to Annual Radiological Environ Operating Rept for CY98.Util Has Identified Transcription Error on Last Page of Attachment C of Rept,Results from Interlaboratory Comparison Program 1998
ML20195F3941999-05-27027 May 1999
FOIA Request That Memo from J Calvo to Fl Lebdon Re TIA - St Lucie,Unit 1 Environ Qualification of Woodward Governor Controls Be Placed in PDR
ML17241A3461999-05-24024 May 1999
Forwards Revised Relief Request 22 to Clarify Several Areas of Relief.Nrc Action Is Requested to Be Complete by Aug 1999 to Support Planning for Spring 2000 Unit 2 Refueling Outage
ML17241A3391999-05-20020 May 1999
Forwards Notification of Change to Small Break LOCA ECCS Evaluation Model Used for St Lucie Unit 1.Anomaly Was Discovered & Corrected That Resulted in Reducing Calculated PCT for Limiting SBLOCA by More than 50 F
ML17241A3371999-05-20020 May 1999
Forwards Util Suppl to GL 95-07 Response Re pressure-locking & Thermal Binding of safety-related power-operated Gate Valves,In Response to NRC Second RAI Dtd 990225
ML20207C7531999-05-17017 May 1999
Discusses Issue Identified by FPL in Feb 1998 Involving Potential for Fire to Cause Breach of Rc Sys High/Low Pressure Interface Boundary & NRC Decision for Exercise of Enforcement Discretion
ML17241A3301999-05-17017 May 1999
Forwards LER 99-004-00 Re as Found Cycle 10 Psv Setpoints Outside TS Limits,Which Occurred on 990415.Root Cause Determination Not Yet Complete.Suppl to Include Root Cause & Corrective Actions Will Be Submitted
ML17309A9821999-05-10010 May 1999
Forwards Rev 36 to St Lucie Emergency Plan, Per 10CFR50.54(q).Executive Summary & Summary of Changes Incorporated by Rev,Encl
IR 05000335/19980141999-04-29029 April 1999
Provides Confirmation of NRC Staff Conclusions Re Cited & non-cited Violations in Insp Rept 50-335/98-14 & 50-389/98-14.Utils Position Re Consideration of Multiple Spurious Actuations in Event of Fire,Reiterated
ML17241A3221999-04-29029 April 1999
Provides Confirmation of NRC Staff Conclusions Re Cited & non-cited Violations in Insp Rept 50-335/98-14 & 50-389/98-14.Utils Position Re Consideration of Multiple Spurious Actuations in Event of Fire,Reiterated
ML17229B1071999-04-28028 April 1999
Forwards 1998 Annual Environ Operating Rept for St Lucie Unit 2. Rept Includes Discussions of 5-inch Barrier Net Maint & Taprogge Condenser Tube Cleaning Sys Ball Loss,As Agreed at First Biennial Sea Turtle Meeting Held on 980120
ML17229B1051999-04-22022 April 1999
Requests That Listed Individuals Be Placed on Official Serve List for Nuclear Matl Safety & Safeguards Info Notices
ML17229B1061999-04-21021 April 1999
Notifies NRC of Change in Medical Status of Licensed Operator Pf Farnsworth (Docket 55-21285,license SOP-21094). NRC Form 3996, Medical Exam Certification, Encl.Encl Withheld Per 10CFR2.790(a)(6)
ML17309A9851999-04-15015 April 1999
Requests That NRC Review Denial of Appeal from Assessment of Fees Assessed in 981101 Invoice RS0062-99 & Assessment of Fees in Invoice RS0182-99 Which Was Also Denied in 990305 Ltr.Both Invoices Are for Fees Re Inspector GG Warnick
ML20205M0431999-04-13013 April 1999
Eighth Partial Response to FOIA Request for Records.App Q & R Records Encl & Being Made Available in PDR
ML17229B0951999-04-0808 April 1999
Requests Approval of Encl Revised Relief Request 6,in Response to 990322 Telcon with NRC & 10CFR55.55a(a)(3). Request States That Visual VT-3 Exams Will Be Conducted IAW IWA-2213 & Repairs Will Be IAW Util ASME Section IX Program
ML17229B0821999-04-0707 April 1999
Requests Approval of Interim Relief Request 26 Re Repair Requirements for Class 2 ECCS Piping,Per 10CFR50.55a(a)(3) & 50.55a(g)(iii).Alternative Actions Apply Guidance of GLs 91-18 & 90-05 & ASME Code Case N-513.Evaluation,encl
1999-09-28
[Table view]
Category:INCOMING CORRESPONDENCE
MONTHYEARML17241A5001999-10-21021 October 1999
Forwards Rev 3 to Emergency Response Data Sys (ERDS) Data Point Library for St Lucie Unit 1.Rev Provides Replacement Pages & Follows Format Recommended by NUREG 1394, ERDS Implementation, Rev 1,App C
ML17309A9981999-10-19019 October 1999
Forwards Revised Epips,Including Rev 3 to EPIP-10 & Rev 25 to HP-202.EPIP-10 Added Onsite Monitoring Points,Made Administrative Changes & Incorporated New Attachments & HP-202 Added Red Team Survey Points
ML17241A4811999-10-0101 October 1999
Reports Number of Tubes Plugged During Unit 1 Refueling Outage SL1-16,per TS 4.4.5.5.a
ML17241A4701999-09-25025 September 1999
Forwards Info Requested by NRC Staff During 990916 Telcon to Complete Staff Review of Request for risk-informed Extension of Action Completion/Aot Specified for Inoperable Train of LPSI Sys at Plant
ML17241A4721999-09-24024 September 1999
Forwards Rev 1 to Plant Change/Mod (PCM) 99016 to St Lucie Unit 1,Cycle 16 COLR, IAW TS 6.9.1.11.d.Refueling Overhaul Activities Are Currently in Progress & Reactor Operations for Cycle 16 Are Scheduled to Commence in Oct 1999
ML17241A4681999-09-22022 September 1999
Requests Restriction Be Added to Senior Operator License SOP-21093 for TE Bolander.Nrc Forms 369,encl.Encl Withheld Per 10CFR2.790(a)(6)
ML17241A4671999-09-20020 September 1999
Forwards Completed NRC Form 536, Operator Licensing Exam Data, for St Lucie Units 1 & 2,as Requested in Administrative Ltr 99-03, Preparation & Scheduling of Operator Licensing Exams.
ML17241A4581999-09-13013 September 1999
Forwards Info Requested by NRC Staff During 990630 & 0816 Telcons,To Complete Review of Proposed License Amend for Fuel Reload Process Improvement Program
ML17241A4531999-08-31031 August 1999
Informs That No Candidates from St Lucie Plant Will Be Participating in PWR Gfes Being Administered on 991006
ML17241A4521999-08-31031 August 1999
Withdraws Relief Request 16 & Suppl Relief Request 15 with Info Requested During 990526 Telephone Conference Re ISI Insp Plan,Third 10-yr Interval
ML17241A4501999-08-26026 August 1999
Informs That FPL Has Reviewed Reactor Vessel Integrity Database,Called RVID2,re Closure of GL 92-01,rev 1,suppl 1. Requested Corrections & Marked Up Pages from Rvid 2 Database Summary Repts That Correspond to Comments,Attached
ML17241A4371999-08-13013 August 1999
Forwards fitness-for-duty Program Performance Data for six- Month Period Ending 990630,per 10CFR26.71(d)
ML17241A4461999-08-11011 August 1999
Requests That W Rept Entitled, Evaluation of Turbine Missile Ejection Probability Resulting from Extending Test Interval of Interceptor & Reheat Stop Valves at St Lucie Units 1 & 2, Be Withheld from Public Disclosure
L-99-171, Forwards Rev 56 to Physical Security Plan.Summary of Changes & Marked Up Copy of Revised Pages Also Encl.Encls Withheld from Public Disclosure Per 10CFR2.790(a)(3)1999-07-29029 July 1999
Forwards Rev 56 to Physical Security Plan.Summary of Changes & Marked Up Copy of Revised Pages Also Encl.Encls Withheld from Public Disclosure Per 10CFR2.790(a)(3)
ML17309A9911999-07-26026 July 1999
Forwards Revised EPIPs & Revised Procedures That Implement Emergency Plan as Listed.Procedures Provides Instruction for Operational Support Ctr (OSC) Chemistry Supervisor to Establish Remote Labs at Locations Specified
ML17241A4221999-07-22022 July 1999
Forwards List of Proposed Licensing Actions for St Lucie Units 1 & 2,planned During Fys 2000 & 2001,in Response to Administrative Ltr 99-02, Operating Reactor Licensing Action Estimates.
ML17241A4471999-07-22022 July 1999
Requests That Rev 1 to WCAP-14732 & Rev 1,Add 1 to WCAP-14732 Be Withheld from Public Disclosure
ML17241A4151999-07-22022 July 1999
Forwards Revised Relief Request 25 for Second 10-yr ISI Interval for Unit 2
ML17241A4101999-07-16016 July 1999
Forwards FP&L Supplemental Response to NRC Request for Info Re Y2K Readiness at Nuclear Power Plants
ML17309A9881999-07-0707 July 1999
Forwards Rev 5 to EPIP-03, Emergency Response Organization Notification/Staff Augmentation. Rev 5 to EPIP-03 Was Revised to Transfer EP Responsibilities from Training Manager to Protection Svcs Manager
ML17241A4011999-06-30030 June 1999
Forwards Info Copy of Florida Wastewater Permit (FL0002208) (Formerly NPDES Permit) Mod,Which Was Issued by Florida Dept of Environ Protection on 990604
ML17241A3971999-06-30030 June 1999
Forwards Suppl Response to GL 96-05, Periodic Verification of Design-Basis Capability of Safety-Related Movs, as Requested in 990317 Ltr
ML17355A3661999-06-30030 June 1999
Forwards Florida Power & Light Topical QA Rept, Dtd June 1999.Encl I Includes Summary of Changes Made to Topical QA Rept Since 1998
ML17241A3951999-06-29029 June 1999
Provides Response to NRC Request for Info Re Y2K Readiness at Nuclear Power Plants.Gl 98-01, Y2K Readiness of Computer Sys at Nuclear Power Plants, Requested Response on Status of Facility Y2K Readiness by 990701.Disclosure Encl
ML17241A3731999-06-17017 June 1999
Supplements Relief Requests 4,11 & 13 for Third ten-year ISI Interval with Info Requested During 990526 Telcon.Expedited Review Is Requested by 990730 to Avoid Negatively Impacting Upcoming St Lucie Unit 1 Refueling Outage (SL1-16)
ML17241A3641999-06-14014 June 1999
Submits Supplement to Relief Request 24 with Info Requested by Nrc.In Addition Relief Request 24 Is Identical to St Lucie Unit 1 Relief Request 4 for Third ISI Interval Being Supplemented by FPL Ltr L-99-139
L-99-129, Forwards Rev 55 to Physical Security Plan,Summary of Changes & Marked Up Copy of Revised Pages.With Directions for Incorporating Rev Into Plan & Copies of Replacement Pages.Rev Withheld,Per 10CFR2.790(a)(3)1999-06-0909 June 1999
Forwards Rev 55 to Physical Security Plan,Summary of Changes & Marked Up Copy of Revised Pages.With Directions for Incorporating Rev Into Plan & Copies of Replacement Pages.Rev Withheld,Per 10CFR2.790(a)(3)
ML17241A3601999-06-0707 June 1999
Forwards Correction to Annual Radiological Environ Operating Rept for CY98.Util Has Identified Transcription Error on Last Page of Attachment C of Rept,Results from Interlaboratory Comparison Program 1998
ML17241A3561999-06-0707 June 1999
Forwards Rept Containing Brief Description & Summary of SEs for Changes,Tests & Experiments Which Were Approved for Unit 3 During Period of 970526-981209
ML20195F3941999-05-27027 May 1999
FOIA Request That Memo from J Calvo to Fl Lebdon Re TIA - St Lucie,Unit 1 Environ Qualification of Woodward Governor Controls Be Placed in PDR
ML17241A3461999-05-24024 May 1999
Forwards Revised Relief Request 22 to Clarify Several Areas of Relief.Nrc Action Is Requested to Be Complete by Aug 1999 to Support Planning for Spring 2000 Unit 2 Refueling Outage
ML17241A3371999-05-20020 May 1999
Forwards Util Suppl to GL 95-07 Response Re pressure-locking & Thermal Binding of safety-related power-operated Gate Valves,In Response to NRC Second RAI Dtd 990225
ML17241A3391999-05-20020 May 1999
Forwards Notification of Change to Small Break LOCA ECCS Evaluation Model Used for St Lucie Unit 1.Anomaly Was Discovered & Corrected That Resulted in Reducing Calculated PCT for Limiting SBLOCA by More than 50 F
ML17241A3301999-05-17017 May 1999
Forwards LER 99-004-00 Re as Found Cycle 10 Psv Setpoints Outside TS Limits,Which Occurred on 990415.Root Cause Determination Not Yet Complete.Suppl to Include Root Cause & Corrective Actions Will Be Submitted
ML17309A9821999-05-10010 May 1999
Forwards Rev 36 to St Lucie Emergency Plan, Per 10CFR50.54(q).Executive Summary & Summary of Changes Incorporated by Rev,Encl
ML17241A3221999-04-29029 April 1999
Provides Confirmation of NRC Staff Conclusions Re Cited & non-cited Violations in Insp Rept 50-335/98-14 & 50-389/98-14.Utils Position Re Consideration of Multiple Spurious Actuations in Event of Fire,Reiterated
IR 05000335/19980141999-04-29029 April 1999
Provides Confirmation of NRC Staff Conclusions Re Cited & non-cited Violations in Insp Rept 50-335/98-14 & 50-389/98-14.Utils Position Re Consideration of Multiple Spurious Actuations in Event of Fire,Reiterated
ML17229B1071999-04-28028 April 1999
Forwards 1998 Annual Environ Operating Rept for St Lucie Unit 2. Rept Includes Discussions of 5-inch Barrier Net Maint & Taprogge Condenser Tube Cleaning Sys Ball Loss,As Agreed at First Biennial Sea Turtle Meeting Held on 980120
ML17229B1051999-04-22022 April 1999
Requests That Listed Individuals Be Placed on Official Serve List for Nuclear Matl Safety & Safeguards Info Notices
ML17229B1061999-04-21021 April 1999
Notifies NRC of Change in Medical Status of Licensed Operator Pf Farnsworth (Docket 55-21285,license SOP-21094). NRC Form 3996, Medical Exam Certification, Encl.Encl Withheld Per 10CFR2.790(a)(6)
ML17309A9851999-04-15015 April 1999
Requests That NRC Review Denial of Appeal from Assessment of Fees Assessed in 981101 Invoice RS0062-99 & Assessment of Fees in Invoice RS0182-99 Which Was Also Denied in 990305 Ltr.Both Invoices Are for Fees Re Inspector GG Warnick
ML17229B0951999-04-0808 April 1999
Requests Approval of Encl Revised Relief Request 6,in Response to 990322 Telcon with NRC & 10CFR55.55a(a)(3). Request States That Visual VT-3 Exams Will Be Conducted IAW IWA-2213 & Repairs Will Be IAW Util ASME Section IX Program
ML17229B0821999-04-0707 April 1999
Requests Approval of Interim Relief Request 26 Re Repair Requirements for Class 2 ECCS Piping,Per 10CFR50.55a(a)(3) & 50.55a(g)(iii).Alternative Actions Apply Guidance of GLs 91-18 & 90-05 & ASME Code Case N-513.Evaluation,encl
ML17229B0851999-04-0505 April 1999
Requests Approval of Encl Relief Request 25 Which Proposes to Use Alternative Requirements of ASME Code Case N-613 in Lieu of Requirements of ASME Section XI Figures IWB-2500-7(a) & IWB-2500-7(b).Action Requested by Aug 1999
ML17309A9791999-03-31031 March 1999
Forwards Revised EPIPs Including Rev 2 to EPIP-00,rev 2 to EPIP-09,rev 2 to EPIP-10 & Rev 10 to HP-207.Summary of Revs Listed
ML17309A9761999-03-23023 March 1999
Forwards Revised Epips,Including Rev 4 to EPIP-03, Er Organization Notification/Staff Augmentation, Rev 3 to EPIP-05, Activation & Operation of OSC & Rev 14 to HP-200, HP Emergency Organization. Changes to Epips,Discussed
ML17229B0691999-03-19019 March 1999
Transmits TS Pages Requested by NRC for Use in Issuance of Proposed License Amend Re SFP Storage Capacity,Per Soluble Boron Credit
ML17229B0721999-03-16016 March 1999
Requests Approval of Enclosed Relief Requests 23 & 24 Re ISI Plan for Second ten-year Interval.Nrc Action Is Requested to Be Complete by Aug 1999 to Support Planning for Spring 2000 Unit 2 Refueling Outage
ML17355A2631999-03-12012 March 1999
Forwards FPL Decommissioning Fund Status Repts for St Lucie, Units 1 & 2 & Turkey Point,Units 3 & 4.Rept for St Lucie, Unit 2 Provides Status of Decommissioning Funds for All Three Owners of That Unit
ML17229B0481999-03-10010 March 1999
Informs That Util Delivered Matls Requested in Encl 1 of NRC Ltr by Hand on 990308,as Requested by NRC Ltr Dtd 990218
1999-09-25
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4,CATEGORY1REGULATINFORMATION DISTRZBUTZONII.'STEM (RIDE)ACCESSION NBR:9704100055 DOC.DATE:
97/04/04NOTARIZED:
NODOCKETFACIL:50-335 St.LuciePlant,Unit1,FloridaPowerSLightCo.05000335AUTH.NAMEAUTHORAFFILIATION STALL,J.A.
FloridaPower&LightCo.RECIP.NAME RECIPIENT AFFILIATION DocumentControlBranch(Document ControlDesk)
SUBJECT:
Providesresponseto'NRCRAIdtd970123recycle14SGruntimeanalysisadoseasssessment usingStdReviewPlanSection15.1.5methodology.
DISTRIBUTION CODE:A001DCOPIESRECEIVED:LTR ENCLSIZE:TITLE:ORSubmittal:
GeneralDistribution NOTES:ERECIPIENT IDCODE/NAME PD2-3LAWIENS,L.INTERNAL:
ACRSNRR/DE/ECGB/A NRR/DRCH/HICB NRR/DSSA/SRXB OGC/HDS3EXTERNAL:
NOACCOPIESLTTRENCL1111111111111011RECIPIENT IDCODE/NAME PD2-3PD~ECENTEROl.RR/DEEMCBNRR/DSSA/SPLB NUDOCS-ABSTRACT NRCPDRCOPIESLTTRENCL111111111111DENOTETOALL"RIDS"RECIPIENTS:
PLEASEHELPUSTOREDUCEWASTE.TOHAVEYOURNAMEORORGANIZATION REMOVEDFROMDISTRlBUTION LISTSORREDUCETHENUMBEROFCOPIESRECEIVEDBYYOUORYOURORGANIZATION, CONTACTTHEDOCUMENTCONTROLDESK(DCD)ONEXTENSION 415-2083TOTALNUMBEROFCOPIESREQUIRED:
LTTR14ENCL13 0C~4'lTIUi FloridaPower&LightCompany,6501SouthOceanDrive,JensenBeach,FL34957April4,1997L-97-9010CFR50.4U.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, D.C.20555.RE:St.LucieUnit1DocketNo.50-335RequestforAdditional Information No.1rRAttachment 1providestheFloridaPowerEcLightCompany(FPL)responsetotheNRCrequestforadditional information (RAI)datedJanuary,23, 1997.FPLletter,L-97-47datedFebruary21,1997,notifiedtheNRCofthescheduleforproviding therequested information.
Attachment 2providestheSt.LucieUnit1doseassessment usingStandardReviewPlanSection15.1.5methodology.
Thedoseassessment, preparedbyScientific Applications International Corporation (SAIC)forFPL,isSAICreport,SAIC-97-1008, AnalysisoftheRadiological Consequences ofaMainSteamLineBreakOutsideContainment fortheSt.LucieUnitINuclearPowerPlantUsingiVUREG-0800StandardReviewPlan15.1.5AppendixA,datedMarch14,1997.Thereportprovidesadosecalculation foraonegpmprimarytosecondary leakforapostulated mainsteamlinebreak(MSLB)outsidecontainment.
Thedoseswerenormalized toonegpmsothatotherdosescouldbedetermined bylinearextrapolation forhigherleakrates.Theresultsshowthat,forthepostulated MSLBwithinducedsteamgenerator tubeleakagefollowing 15monthsofoperation (approximately threegpmleakrate),theresulting doseisconsidered acceptable underthependingsteamgenerator rulemakingcriteria, inthattheresultsdonotexceedthe10CFR100and10CFR50AppendixAgeneraldesigncriteria(GDC)19accidentdoselimits.DuringaJuly3,1996,meetingwiththeNRC,FloridaPowerandLightCompany(FPL)committed toprovidetheresultsoftheSt.LucieUnit1steamgenerator runtimeanalysistotheNRCwithin90daysofthestartupfromthe1996refueling outage(SL1-14).
FPLletterL-96-273datedOctober24,1996,providedFPL'splanstooperatetheUnit1steamgenerators forfifteen(13)months(i.e.,throughOctober23,1997).Theruntimeanalysiswasaphysically basedanalysisthatusedtheguidancecontained inDraftRegulatory Guide(RG)1.121,GenericLetter-I95-05,andtheDraftRegulatory Guide,SteamGenerator TubeIntegrity.
9704i00055 970404PDRADOCK,05000335 F'DRanFPLGroupcompanylll13llllllllllllllillljlllllllIiHllIllllllll tIta.
St.LucieUnitIDocketNo.50-335L-97-90Page2Thisletterdoesnotcontainanynewregulatory commitments.
FPLispreparedtomeetwiththeNRCtodiscusstheresultsofthisandanyotherpreviously submitted analyses.
Pleasecontactusifyouhaveanyadditional questions.
Verytrulyyours,J.A.StallVicePresident St.LuciePlantJAS/GRMAttachments cc:RegionalAdministrator, RegionII,USNRCSeniorResidentInspector, USNRC,St.LuciePlant St.LucieUnit1DocketNo.50-335L-97-90Attachment 1Page1Cycle14SteamGenerator RuntimeAnalysisfriinlInfinNRCQuestion1Regulatory Guide(RG)1.78addresses theimpactofchemicalreleasesuponthecontrolroomoperators.
ItisstatedinEnclosure 3thatthemodelsfordosecalculation weretakenfromthisRG,PleaseclarifyhowthisRGwasutilizedinthisanalysis.
FPLResponse1Thisregulatory Guidewasusedprimarily tocategorize thecontrolroombythetypeofprotection referredtoasA,B,orC.Sincetheleaktightness isindependent ofthetypeofairbornematerial, theclassification systeminRG1.78providesagoodinitialassessment ofthetypeofprotection inthedesign.Theformulasfordoseconcentration wereappliedasrecommended inRG1.145whichprovidesimprovedmethodsoverRG1.4.NRCQuestion2Theselection ofmeteorological dataforSt.Lucieshouldnotbelimitedtoonlyoneyear'worthofdatainordertominimizetheeffectsofannualperturbations.
Itisrequested thataminimumoffiveyearsbeused,orprovidejustification fortheuseoflessdata.FPLResponse2Weagreethatafiveyearsamplewillproduceabetter.representation ofthelocalconditions neededtoestimatetheX/Qforanysite.InthecaseofSt.Lucietheyearselectedwasclearlyconservative forselecting the95%confidence level(5%exceedance level).For1996thecalculated 95%levelwasslightlygreaterthan1E-4,whereasthefiveyearaverageintheFSARwas8.55E-5.Thus,theselectedyearwasconservative by15%.Asaresultofthisquestionwealsoreviewedthelastfiveyearsofmeteorological datatodetermine thefrequency ofthemostrestrictive stability classes,GandF.Wefoundthatthefrequency forClassGandF(fraction oftimepercentage) waslowerforallyearsthantheselectedyear1995.Theselectedyearof1995istheonlyonewherethetotalfractionofGandFexceed5%.Thus,theselectedyearproducesthemostconservative X/Qonayearlybasisforthepurposeofthecalculations.
St.LucieUnit1DocketNo.50-335L-97-90Attachment 1Page2Table1Reviewofmeteorolo icaldataforSt.LucieYear1991(avebyquarter)%ClassF3.509%ClassG0.77119923.4701.15319933.4480.9521994(avebyquarter)1995usedinanalsis)FiveYearAverae2.724.7853.3860.452.4840.962NRCQuestion3Themannerinwhichthecontrolroomengineered safetyfeaturesystemwasdescribed asoperating isdifferent thanthatdescribed inNUREG/CR4191,"SurveyofLicenseeControlRoomHabitability Practices."
Itisnotclearwhetherthecontrolroomwasincorrectly modeledorthemannerofoperation waschanged.Pleaseexplain.FPLResponse3ThecontrolroomatSt.LucieUnit1meetstheobjectives inthechecklistitemsinNUREG/CR4191.Periodicscheduled testingindicates thatanairexchangerateoflessthan0.25volume/hour duringanisolatedcondition producesacontrolroompressureof1/8incheswater.Forthereference probabilistic assessment calculation amodelwasusedwhichlumpedallinputsandoutputsintosingleparameters.
Thetailsofthedistribution weretakenaslargeenoughtocovervariation intiming.Theprobabilistic assessment usedrealistic designvaluesfortheparameters andthenassignedrangestoassessvariations inthevalues.Datafortherealistic operation arenotnecessarily thesameastheconservative valuesusedforaccidentanalysisassumptions inChapter15wheretheloss-'of-coolant-accident (LOCA)sourcetermisexpectedtoboundotheraccidentdosesforthecontrolroom.Hence,thesimplified probabilistic modelingapproachshowssignificant marginovertheassumptions usedintheSRPtypeanalysiswhichaccountsforcontrolroomfeaturesusingaccidentboundingassumptions.
Ll
