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| {{#Wiki_filter:FloridaPower&LightCompanySt.LucieUnitf2Nuclear,PlantSpecialReportForDDYCURRENTEXAMINATIONOFSTEAMGENERATORTUBINGDURINGOCTOBER,1987NuclearEnergyServicesMaterials,CodesandInspectionsDepartmentJunoBeach,Florida33408SSi10104i38S1024PDRADOCK050003899PDC II15(,, | | {{#Wiki_filter:FloridaPower&LightCompanySt.LucieUnitf2Nuclear,PlantSpecialReportForDDYCURRENTEXAMINATION OFSTEAMGENERATOR TUBINGDURINGOCTOBER,1987NuclearEnergyServicesMaterials, CodesandInspections Department JunoBeach,Florida33408SSi10104i3 8S1024PDRADOCK050003899PDC II15(,, |
| IntroductionTheNuclearEnergyServices,Materials,Codes&InspectionDepartment,conductedaninserviceeddycurrentexaminationoftheFloridaPower&LightSt.LucieUnitg2SteamGeneratorTubinginOctober,1987.Theextentofthisexaminationincluded1004ofnon-pluggedhotlegandcoldlegtubesinaccordancewithplanttechnicalspecificationsusingmulti-frequencyeddycurrentequipmentanddifferentialbobbincoiltestprobes.TheeddycurrentdatawassubjectedtotwoindependentanalysesusingcertifieddataanalystsfromCombustionEngineering,NDETechnologyandZetec,Inc.DiscrepanciesintheindependentanalyseswereresolvedbyLevelIIIindividualsfromtherespectiveagencies.St.LucieUnitg2containstwoCombustionEngineeringseries67recirculatingsteamgeneratorsidentifiedasPSL-2AandPSL-2B.Eachsteamgeneratorcontainsapproximately8,411u-bendtubesmadeofinconel600.AbaselineeddycurrentexaminationwasperformedinJuly,1982andthefirstinserviceeddycurrentexaminationwasperformedinOctober,1984.AnunscheduledinserviceeddycurrentexaminationwaslastperformedinMarch,1985,duetoprimarytosecondarytubeleakagewhichwasidentifiedandattributedtoflow;inducedvibrationalwearatthediagonalandverticalsupportstraps,referredtoasbatwings(Figures1and2).Toobtainwearprogressiondata,29tubeswhichwerepluggedinMarch,1985werede-pluggedinApril,1986andexaminedusingastandardbobbincoilandasegmentedbobbincoilprobe.Thesegmentedbobbincoilprobeprovidesweardataatbothsidesofthetubeincontactwiththebatwing.TheresultsofthiswearprogressionanalysesispresentedinCombustionEngineeringreportCEN-328datedMay,1986.Applicationof'hewearprogressionmodelandconservativemanagementpracticeduringtheOctober,1987outageresultedin"preventivemaintenanceplugging"ofsix(6)additionaltubesinPSL-2Aandtwo(2)additionaltubesinPSL-2B.Table1providesasummarybysteamgeneratoroftubesexamined,indicationsoftubewallpenetrationandtubesplugged.Table2providesalistingoftubespluggedasaresultoftheOctober,1987examinationandapplicationofwearprogressionmodels.RefertoFigure1asakeytolocationcodes.Atotalof8tubeswerepluggedinthePSL-2Ageneratorand10tubeswerepluggedinthePSL-2Bgenerator.Seven(7)tubesinPSL-2Awerepluggedasaresultofwearatbatwingorverticalsupportstraps.One(1)tubewaspluggedasaresultofwearfromaforeignobject;identifiedbyvisualexaminationtobealengthofweldwireattheperipheryofthetubebundle.Ten(10)tubeswerepluggedinPSL-2Basaresultofwearatbatwingorverticalsupportstraps.Table3providesalistingofallindicationsoftubewallpenetrationbylocationforeachsteamgenerator.
| | Introduction TheNuclearEnergyServices, Materials, Codes&Inspection Department, conducted aninservice eddycurrentexamination oftheFloridaPower&LightSt.LucieUnitg2SteamGenerator TubinginOctober,1987.Theextentofthisexamination included1004ofnon-plugged hotlegandcoldlegtubesinaccordance withplanttechnical specifications usingmulti-frequency eddycurrentequipment anddifferential bobbincoiltestprobes.Theeddycurrentdatawassubjected totwoindependent analysesusingcertified dataanalystsfromCombustion Engineering, NDETechnology andZetec,Inc.Discrepancies intheindependent analyseswereresolvedbyLevelIIIindividuals fromtherespective agencies. |
| | St.LucieUnitg2containstwoCombustion Engineering series67recirculating steamgenerators identified asPSL-2AandPSL-2B.Eachsteamgenerator containsapproximately 8,411u-bendtubesmadeofinconel600.Abaselineeddycurrentexamination wasperformed inJuly,1982andthefirstinservice eddycurrentexamination wasperformed inOctober,1984.Anunscheduled inservice eddycurrentexamination waslastperformed inMarch,1985,duetoprimarytosecondary tubeleakagewhichwasidentified andattributed toflow;inducedvibrational wearatthediagonalandverticalsupportstraps,referredtoasbatwings(Figures1and2).Toobtainwearprogression data,29tubeswhichwerepluggedinMarch,1985werede-plugged inApril,1986andexaminedusingastandardbobbincoilandasegmented bobbincoilprobe.Thesegmented bobbincoilprobeprovidesweardataatbothsidesofthetubeincontactwiththebatwing.Theresultsofthiswearprogression analysesispresented inCombustion Engineering reportCEN-328datedMay,1986.Application of'hewearprogression modelandconservative management practiceduringtheOctober,1987outageresultedin"preventive maintenance plugging" ofsix(6)additional tubesinPSL-2Aandtwo(2)additional tubesinPSL-2B.Table1providesasummarybysteamgenerator oftubesexamined, indications oftubewallpenetration andtubesplugged.Table2providesalistingoftubespluggedasaresultoftheOctober,1987examination andapplication ofwearprogression models.RefertoFigure1asakeytolocationcodes.Atotalof8tubeswerepluggedinthePSL-2Agenerator and10tubeswerepluggedinthePSL-2Bgenerator. |
| | Seven(7)tubesinPSL-2Awerepluggedasaresultofwearatbatwingorverticalsupportstraps.One(1)tubewaspluggedasaresultofwearfromaforeignobject;identified byvisualexamination tobealengthofweldwireattheperiphery ofthetubebundle.Ten(10)tubeswerepluggedinPSL-2Basaresultofwearatbatwingorverticalsupportstraps.Table3providesalistingofallindications oftubewallpenetration bylocationforeachsteamgenerator. |
| EI't,lAr. | | EI't,lAr. |
| Anumberoftubeshadindicationslocatedatthebatwingareaswhichrepresenttheinitiationoftubewalldamagefromvibrationasdiscussedabove.However,thewearattheseareashasnotadvancedtothepointwhichwillproduceameasurableresultintermsofwallpenetration.Therefore,theseindicationsareidentifiedintheeddycurrentdatabaseandtheaffectedtubeswillbemonitoredduringsubsequentexaminationsorotherwisedispositioned.
| | Anumberoftubeshadindications locatedatthebatwingareaswhichrepresent theinitiation oftubewalldamagefromvibration asdiscussed above.However,thewearattheseareashasnotadvancedtothepointwhichwillproduceameasurable resultintermsofwallpenetration. |
| PSL-2APSL-28V2V4vl~~v5DH-(Top)(Bottom)09HOOH-07H06H05H04H03H02HOIHTSHTEHfliI!IIIfI-(Top)-(8ottom)09C38.25"08C38.25"07037.5"06C35.0e-05032.0"04C37.5w03035.0"-02032.0"OIC28.0"TSC.21.5TECINLETOUTLET'T.LUCIKIIleCt'atea~Kiev.1to7DrilledSupporte~Elev.8&9STEAKGENERATORARRANGEMENTFigure1 I | | Therefore, theseindications areidentified intheeddycurrentdatabaseandtheaffectedtubeswillbemonitored duringsubsequent examinations orotherwise dispositioned. |
| HEIlgglPDH-(top)DH(bottom)gyps~~>+~APEBENDRFG!ONTVBE,5UPPORT5PLANTST.LUClKUNlT2Figure2 TABLE1St.LucieUnit2-SummaofInserviceEddCurrentExaminationResultsforOctober1987PSL-2APSL-2BTOTALTUBESEXAMINEDIndicationsofWallPenetrationLessthan20420to39440to1004Total337272366IND186169211TubesPluggedbasedonWearProgressionAnalysisandManagementConservatismTubesPluggedWhichExceededPluggingLimitsTotalTubesPlugged10TotalTubesPluggedToDate208155 TABLE2St.LucieUnit2SteamGeneratorTubesPluedDurintheOctober1987OutaeLineRowSteamGeneratorAIndicationLocation565982929294981309413352424440381164040333736343533V4DHDCDHDHDHDCTSH+11.3LineRovSteamGeneratorBIndicationLocation253869758087881001001118996133414849463692934351624553334747284253V2V2V4V1V3DHV3V3DCV2V2 St.LucieUnit2Examinationram-October1987SteamGeneratorPSL-2AListofallTubeswithFlawsLineRowIndication1Location2733485256575859616464738182879192929496969898108117127129130931051268494951321338394134474752691094244404050381389611353871163331273625403228402029212520332434373634263035222722222833V4+V2+DH+V3+V4+V4+V2DH+DH+V3+V2+DH+V3+V3+-DC+5C+TSC+DH+DH+DH+V3V3DC+DH+V2+5H+V3+V3+TSH+1.00.20.90.20.10.90.80.00.00.91.00.00.90.80.08.94.00.00.00.00.70.80.00.00.729.70.80.711.3 TABLE3St.LucieUnit2ExaminationPrram-October1987SteamGeneratorPSL-2BListofallTubeswithFlawsLineRowIndicationLocation242534386869757678797980838788889799100100111122123134968996963213341112504749488949465697353692939497104304326516222455336212125333547473926282842532123208HV2V2+V2V4DH+V1+V37C+DC+DH+DC+DH+V3V3V3+V3+TSH+DC+DC+V2V2+V2V3+V1+1.00.90.50'0.90.00'0.90'0.00.00.00.00.70'0~00.820.80.00.00.90.61.10.70.5}} | | PSL-2APSL-28V2V4vl~~v5DH-(Top)(Bottom)09HOOH-07H06H05H04H03H02HOIHTSHTEHfliI!IIIfI-(Top)-(8ottom)09C38.25"08C38.25"07037.5"06C35.0e-05032.0"04C37.5w03035.0"-02032.0"OIC28.0"TSC.21.5TECINLETOUTLET'T.LUCIKIIleCt'atea~Kiev.1to7DrilledSupporte~Elev.8&9STEAKGENERATOR ARRANGEMENT Figure1 I |
| | HEIlgglPDH-(top)DH(bottom)gyps~~>+~APEBENDRFG!ONTVBE,5UPPORT5PLANTST.LUClKUNlT2Figure2 TABLE1St.LucieUnit2-SummaofInservice EddCurrentExamination ResultsforOctober1987PSL-2APSL-2BTOTALTUBESEXAMINEDIndications ofWallPenetration Lessthan20420to39440to1004Total337272366IND186169211TubesPluggedbasedonWearProgression AnalysisandManagement Conservatism TubesPluggedWhichExceededPluggingLimitsTotalTubesPlugged10TotalTubesPluggedToDate208155 TABLE2St.LucieUnit2SteamGenerator TubesPluedDurintheOctober1987OutaeLineRowSteamGenerator AIndication Location565982929294981309413352424440381164040333736343533V4DHDCDHDHDHDCTSH+11.3LineRovSteamGenerator BIndication Location253869758087881001001118996133414849463692934351624553334747284253V2V2V4V1V3DHV3V3DCV2V2 St.LucieUnit2Examination ram-October1987SteamGenerator PSL-2AListofallTubeswithFlawsLineRowIndication 1Location2733485256575859616464738182879192929496969898108117127129130931051268494951321338394134474752691094244404050381389611353871163331273625403228402029212520332434373634263035222722222833V4+V2+DH+V3+V4+V4+V2DH+DH+V3+V2+DH+V3+V3+-DC+5C+TSC+DH+DH+DH+V3V3DC+DH+V2+5H+V3+V3+TSH+1.00.20.90.20.10.90.80.00.00.91.00.00.90.80.08.94.00.00.00.00.70.80.00.00.729.70.80.711.3 TABLE3St.LucieUnit2Examination Prram-October1987SteamGenerator PSL-2BListofallTubeswithFlawsLineRowIndication Location242534386869757678797980838788889799100100111122123134968996963213341112504749488949465697353692939497104304326516222455336212125333547473926282842532123208HV2V2+V2V4DH+V1+V37C+DC+DH+DC+DH+V3V3V3+V3+TSH+DC+DC+V2V2+V2V3+V1+1.00.90.50'0.90.00'0.90'0.00.00.00.00.70'0~00.820.80.00.00.90.61.10.70.5}} |
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Category:PRESERVICE & INSERVICE INSPECTION & TEST REPTS
MONTHYEARML17229A9961999-01-14014 January 1999
SG Tube Inservice Insp Special Rept.
ML17229A6861998-04-0303 April 1998
Form OAR-1 Owners Activity Rept, for Slp Unit 1,second Interval,Third Period
ML17229A6131998-01-12012 January 1998
Rev 1 to ISI-PSL-1, St Lucie Nuclear Plant,Unit 1 ISI Sketches.
ML17229A4411997-06-19019 June 1997
SG Tube ISI Special Rept.
ML17229A0851996-10-18018 October 1996
NIS-1 Owner Data Rept for Isi.
ML17228B4611996-03-25025 March 1996
Form NIS-1 Owners Data Rept for Inservice Insps, for 960325
ML17228B0261995-02-0303 February 1995
Rev 0 to Second ISI Interval Second Insp Period Third Outage 1994 Summary Rept Submittal.
ML17228A8361994-08-0303 August 1994
Rev 1 to JNS-PSL-204, Second Ten-Yr ISI Interval IST Program for Pumps & Valves,St Lucie Nuclear Power Plant Unit 2.
ML20071H9701994-07-0808 July 1994
Second ISI Interval First Insp Period First Outage 1994 Summary Rept Submittal for St Lucie Unit 2
ML17228A3021993-09-0606 September 1993
Rev 0 to Second ISI Interval Second Insp Period Second Outage 1993 Summary Rept Submittal.
ML20137K4911993-07-21021 July 1993
Npp,Unit 2,Second 10-yr Inservice Insp Interval IST Program
ML17228A2401993-07-21021 July 1993
Second Ten Yr Inservice Insp Interval Inservice Testing Program.
ML17227A6091992-09-22022 September 1992
Spring 1992 Refueling Outage ISI Rept.
ML17227A3621992-03-23023 March 1992
Owners Data Rept for Inservice Insp (Forms NIS-1 & NIS-2), St Lucie Unit 1.
ML17227A3191991-12-31031 December 1991
Steam Generator Inservice Insp Rept St Lucie Unit 1 for 1991
ML17223B1421991-03-0707 March 1991
Inservice Insp Summary Rept for St Lucie Unit 2,1990 Refueling Outage.
ML17223A9231990-08-28028 August 1990
Owners Rept for Inservice Insps as Required by Provisions of ASME Code Rules.
ML17223B1201990-07-16016 July 1990
Steam Generator Inservice Insp Rept.
ML17223A2311989-07-17017 July 1989
Inservice Insp Rept for 890201-0428.Exam Included Class I & II Components & Piping Sys
ML17222A6251988-12-14014 December 1988
Errata to 881130 Inservice Insp Rept,Consisting of Forms NIS-1 & NIS-2, Owners Rept for Repairs or Replacements.
ML17222A6001988-11-30030 November 1988
Inservice Insp Rept for Second 10 Yr Interval
ML17222A5621988-10-31031 October 1988
Eddy Current Exam of Steam Generator Tubing During Oct 1987.
ML17221A6391988-02-12012 February 1988
1987 Inservice Insp Summary Rept, Describing Insp & Testing of ASME Code,Section Xi,Class 1 & 2 Components & Piping Sys & Corrective Measures Recommended & Taken
ML17219A6911987-07-10010 July 1987
1987 Inservice Insp Summary Rept.
ML17216A5101986-04-25025 April 1986
Inservice Insp Rept for 851020-1224.Listed Components Inspected & NDE Techniques & Results Discussed.Statement Re Status of Work for Current Interval Encl
ML17219A2171985-12-31031 December 1985
1986 Inservice Insp Summary Rept.
ML17215A7631985-02-19019 February 1985
Rev 0 to Vol 1 of 1984 Inservice Insp Final Rept.
ML20094P4701984-08-0909 August 1984
Inservice Insp Rept on 830302-840516,describing Exams Performed on Pressure Containment Appurtenance for in-core Instrumentation Flange Assembly
1999-01-14
[Table view]
Category:TEXT-SAFETY REPORT
MONTHYEARML17241A4891999-10-0707 October 1999
LER 99-004-00:on 990912,noted That MSSV Surveillance Was Outside of TS Requirements.Caused by Setpoint Drift.Subject MSSVs Are Being Refurbished & Retested Prior to Unit Startup from SL1-16 Refueling Outage.With 991007 Ltr
ML17241A4951999-09-30030 September 1999
Monthly Operating Repts for Sept 1999 for St Lucie,Units 1 & 2.With 991014 Ltr
ML17241A4741999-08-31031 August 1999
Rev 1 to PCM 99016, St Lucie Unit 1,Cycle 16 Colr.
ML17241A4591999-08-31031 August 1999
Monthly Operating Repts for Aug 1999 for St Lucie,Units 1 & 2.With 990913 Ltr
ML17241A4301999-07-31031 July 1999
Monthly Operating Repts for Jul 1999 for St Lucie Units 1 & 2.With 990805 Ltr
ML17241A4111999-07-16016 July 1999
LER 99-007-00:on 990610,unplanned Cooldown Transient Occurred Due to Personnel Error.Trained & Briefed Personnel & Revised Procedures.With 990716 Ltr
ML17241A4031999-07-0606 July 1999
LER 99-006-00:on 990605,sub-critical Reactor Trip Occurred Due to Inadvertent MSIV Opening.Caused by Personnel Error. Provided Operation Supervision Instruction to Operating Crews,Stand Down Meetings & Operator Aids.With 990706 Ltr
ML17241A4041999-07-0606 July 1999
LER 99-005-00:on 990604,CEA Drop Resulted in Manual Reactor Trip.Caused by Procedural Inadequacies.Procedure Changes Are Planned to Correct Lack of Procedural Guidance for CEA Subgroup Power Switch Replacement.With 990706 Ltr
ML17241A4091999-06-30030 June 1999
Monthly Operating Repts for June 1999 for St Lucie,Units 1 & 2.With 990712 Ltr
ML17241A3941999-06-30030 June 1999
LER 99-004-01:on 990415,as Found Cycle 10 Psv Setpoints Were Outside TS Limits.Caused by Manufacturing Process Defect. All Three Psvs Were Replaced with pre-tested Valves During Cycle 11 Refueling Outage.With 990630 Ltr
ML17355A3681999-06-30030 June 1999
Revised Update to Topical QA Rept, Dtd June 1999
ML17241A3551999-06-0404 June 1999
LER 99-002-00:on 990505,both Trains of Safety Injection Actuation Were Blocked During Surveillance.Caused by Procedure Error.Procedure Revised.With 990604 Ltr
ML17241A3631999-05-31031 May 1999
Monthly Operating Repts for May 1999 for St Lucie Units 1 & 2.With 990610 Ltr
ML17241A3321999-05-17017 May 1999
LER 99-004-00:on 990415,determined That as Found Cycle 10 Psv Setpoints Outside TS Limits.Root Cause Under Investigation.Psvs Replaced with pe-tested Valves During Cycle 11
ML17241A3271999-05-0606 May 1999
LER 99-003-00:on 990406,ECCS Suction Header Leak Resulted in Both ECCS Trains Being Inoperable & Entry Into TS 3.0.3. Caused by Chloride Induced OD Stress Corrosion Cracking of Piping.Made Code Repairs & Coated Piping.With 990506 Ltr
ML17241A3331999-04-30030 April 1999
Monthly Operating Rept for Apr 1999 for St Lucie,Units 1 & 2.With 990517 Ltr
ML17229B0801999-04-0707 April 1999
LER 99-002-00:on 990311,SG ECT Error Caused Operation with Condition Prohibited by Ts.Caused by Deficiencies in Data Analysis Guideline Instructions.Licensee Will Change Data Analysis Guidelines for Lead Analysts.With 990407 Ltr
ML17229B0841999-04-0707 April 1999
Rev 2 to PSL-ENG-SEMS-98-102, Engineering Evaluation of ECCS Suction Lines.
ML17229B0791999-04-0707 April 1999
LER 99-001-00:on 990309,discovered Inadequate Design & IST SRs for Iodine Removal Sys (Irs).Caused by Original Design Inadequacies & Personnel Error.Naoh Tank Vent Valve V07233 Was Tagged Open.With 990407 Ltr
ML17229B0961999-03-31031 March 1999
Monthly Operating Repts for Mar 1999 for St Lucie,Units 1 & 2.With 990408 Ltr
ML17229B0541999-03-10010 March 1999
LER 99-001-00:on 990211,inadequate TS SRs for SIT & SDC Isolation Valves Were Noted.Caused by Failure to Correctly Implement TS Srs.Submitted LAR to Align Required TS SR with Design Bases Requirements Being Verified.With 990310 Ltr
ML17229B0461999-02-28028 February 1999
Monthly Operating Repts for Feb 1999 for St Lucie,Units 1 & 2.With 990310 Ltr
ML17229B0051999-01-31031 January 1999
Monthly Operating Repts for Jan 1999 for St Lucie,Units 1 & 2.With 990211 Ltr
ML17229A9901999-01-20020 January 1999
LER 98-009-00:on 981223,noted That Facility Operated Outside of Design Basis.Caused by non-conservative MSLB Analysis Inputs.Will Review SR Component Differences Between Units & Will re-baseline LTOP Analysis.With 990120 Ltr
ML17229A9961999-01-14014 January 1999
SG Tube Inservice Insp Special Rept.
ML17229A9821999-01-0404 January 1999
LER 98-010-00:on 981207,RCS Boron Sample Frequency Required by Ts,Was Exceeded by Twelve Minutes.Caused by Personnel Error.Equipment Clearance Order Was Lifted to Draw Required Sample & Operations Procedure Was Changed.With 990104 Ltr
ML17229A9831998-12-31031 December 1998
Monthly Operating Repts for Dec 1998 for St Lucie,Units 1 & 2.With 990111 Ltr
ML17229A9611998-12-22022 December 1998
LER 97-002-01:on 981204,containment Sump Debris Screen Was Not IAW Design.Caused by Inadequate C/As for Sump Screen Anamolies.All Identified Sump Screen Deficiencies Were Dispositioned &/Or Repaired.With 981222 Ltr
ML17229A9561998-12-15015 December 1998
LER 98-008-00:on 981118,missed TS SG U Tube Insp.Caused by Encoding Errors While Using Remote Positioning Fixtures.All SG Tube Surveyed.With 981215 Ltr
ML17241A3581998-12-0909 December 1998
Changes,Tests & Experiments Made as Allowed by 10CFR50.59 for Period of 970526-981209.
ML17229A9421998-11-30030 November 1998
Monthly Operating Repts for Nov 1998 for St Lucie,Units 1 & 2.With 981215 Ltr
ML17229A9301998-11-25025 November 1998
LER 98-005-01:on 980807,discovered That New MOV Methodology Caused Past PORV Block Valve Operability Problem.Caused by Inadequacies in Original Vendor MOV Methodology.Planned Valve Mods Will Be Implemented During Cycle 11 1998 Outage
ML17229A9021998-11-0404 November 1998
LER 98-008-00:on 981008,inadequate Reactor Protection Sys Trip Bypass TS Was Noted.Caused by Poorly Worded Ts. Submitted LAR to Clarify Power Requirements for High Rate of Power Trips.With 981104 Ltr
ML17241A4931998-11-0101 November 1998
Statement of Account for Period of 981101-990930 for Suntrust Bank,As Trustee for Florida Municipal Power Agency Nuclear Decommissioning Trust (St Lucie Project).
ML17229A9051998-10-31031 October 1998
Monthly Operating Repts for Oct 1998 for St Lucie,Units 1 & 2.With 981110 Ltr
ML17229A8871998-10-19019 October 1998
Part 21 Rept Re Potential Defect in Swagelok Stainless Steel Front Ferrule,Part Number SS-503-1 Which Was Machined with Improper Length.C/A Includes Insp Equipment That Will 100% Identify Short Length
ML17229A8781998-10-19019 October 1998
Part 21 Rept Re Potential Defect in Swagelok Stainless Steel Front Ferrule,Part Number SS-503-1,which Was Machined with Improper Length.Insp Equipment That Will 100% Identify Short Length
ML17229A8771998-10-14014 October 1998
LER 98-006-00:on 980918,inadvertent Afas Actuation Was Noted.Caused by Degradation of Multiple Afas Power Supplies. Replaced Afas Power Supplies & Revised Procedures.With 981014 Ltr
ML17229A8761998-10-14014 October 1998
LER 98-007-00:on 980918,identified Discrepancies Between Fire Protection Design Requirements & Field Conditions. Caused by Inadequate Translation & Implementation of Fire Protection Requirements.Procedures Revised.With 981014 Ltr
ML17229A8721998-09-30030 September 1998
Monthly Operating Repts for Sept 1998 for St Lucie Units 1 & 2.With 981009 Ltr
ML17229A8511998-09-0202 September 1998
LER 98-005-00:on 980807,discovered That PORV Margins Were Insufficient to Accommodate Addl Conservatism.Caused by Inadequacies in Original Vendor MOV Methodology.Will Implement Planned Valve Actuator mods.W/980902 Ltr
ML17229A8611998-08-31031 August 1998
Monthly Operating Repts for Aug 1998 for St Lucie,Units 1 & 2.With 980911 Ltr
ML18066A2771998-08-13013 August 1998
Part 21 Rept Re Deficiency in CE Current Screening Methodology for Determining Limiting Fuel Assembly for Detailed PWR thermal-hydraulic Sa.Evaluations Were Performed for Affected Plants to Determine Effect of Deficiency
ML17229A8481998-08-0707 August 1998
Rev 1 to PSL-ENG-SEFJ-98-013, St Lucie Unit 2,Cycle 10 Colr.
ML17229A9461998-08-0707 August 1998
Rev 0 to PCM 98016, St Lucie Unit 2,Cycle 11 Colr.
ML17229A8301998-07-31031 July 1998
Monthly Operating Repts for July 1998 for St Lucie,Units 1 & 2.W/980814 Ltr
ML17229A8201998-07-29029 July 1998
LER 98-007-00:on 980630,inadequate Procedure May Have Resulted in SBO Recovery Complications.Caused by Inadequate Procedures.Attached Caution Tags to Appropriate Control switches.W/980729 Ltr
ML17229A7981998-06-30030 June 1998
Monthly Operating Repts for June 1998 for St Lucie,Units 1 & 2.W/980713 Ltr
ML17229A7701998-05-31031 May 1998
Monthly Operating Repts for May 1998 for St Lucie,Units 1 & 2.W/980612 Ltr
ML17229A7411998-05-28028 May 1998
LER 98-004-00:on 980430,discovered Waste Gas Decay Tank Operation W/O Available Oxygen Analyzers,Which Is Prohibited by Ts.Caused by Inadequate Licensee Review of License Amend. Oxygen Analyzer recalibrated.W/980528 Ltr
1999-09-30
[Table view] |
Text
FloridaPower&LightCompanySt.LucieUnitf2Nuclear,PlantSpecialReportForDDYCURRENTEXAMINATION OFSTEAMGENERATOR TUBINGDURINGOCTOBER,1987NuclearEnergyServicesMaterials, CodesandInspections Department JunoBeach,Florida33408SSi10104i3 8S1024PDRADOCK050003899PDC II15(,,
Introduction TheNuclearEnergyServices, Materials, Codes&Inspection Department, conducted aninservice eddycurrentexamination oftheFloridaPower&LightSt.LucieUnitg2SteamGenerator TubinginOctober,1987.Theextentofthisexamination included1004ofnon-plugged hotlegandcoldlegtubesinaccordance withplanttechnical specifications usingmulti-frequency eddycurrentequipment anddifferential bobbincoiltestprobes.Theeddycurrentdatawassubjected totwoindependent analysesusingcertified dataanalystsfromCombustion Engineering, NDETechnology andZetec,Inc.Discrepancies intheindependent analyseswereresolvedbyLevelIIIindividuals fromtherespective agencies.
St.LucieUnitg2containstwoCombustion Engineering series67recirculating steamgenerators identified asPSL-2AandPSL-2B.Eachsteamgenerator containsapproximately 8,411u-bendtubesmadeofinconel600.Abaselineeddycurrentexamination wasperformed inJuly,1982andthefirstinservice eddycurrentexamination wasperformed inOctober,1984.Anunscheduled inservice eddycurrentexamination waslastperformed inMarch,1985,duetoprimarytosecondary tubeleakagewhichwasidentified andattributed toflow;inducedvibrational wearatthediagonalandverticalsupportstraps,referredtoasbatwings(Figures1and2).Toobtainwearprogression data,29tubeswhichwerepluggedinMarch,1985werede-plugged inApril,1986andexaminedusingastandardbobbincoilandasegmented bobbincoilprobe.Thesegmented bobbincoilprobeprovidesweardataatbothsidesofthetubeincontactwiththebatwing.Theresultsofthiswearprogression analysesispresented inCombustion Engineering reportCEN-328datedMay,1986.Application of'hewearprogression modelandconservative management practiceduringtheOctober,1987outageresultedin"preventive maintenance plugging" ofsix(6)additional tubesinPSL-2Aandtwo(2)additional tubesinPSL-2B.Table1providesasummarybysteamgenerator oftubesexamined, indications oftubewallpenetration andtubesplugged.Table2providesalistingoftubespluggedasaresultoftheOctober,1987examination andapplication ofwearprogression models.RefertoFigure1asakeytolocationcodes.Atotalof8tubeswerepluggedinthePSL-2Agenerator and10tubeswerepluggedinthePSL-2Bgenerator.
Seven(7)tubesinPSL-2Awerepluggedasaresultofwearatbatwingorverticalsupportstraps.One(1)tubewaspluggedasaresultofwearfromaforeignobject;identified byvisualexamination tobealengthofweldwireattheperiphery ofthetubebundle.Ten(10)tubeswerepluggedinPSL-2Basaresultofwearatbatwingorverticalsupportstraps.Table3providesalistingofallindications oftubewallpenetration bylocationforeachsteamgenerator.
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Anumberoftubeshadindications locatedatthebatwingareaswhichrepresent theinitiation oftubewalldamagefromvibration asdiscussed above.However,thewearattheseareashasnotadvancedtothepointwhichwillproduceameasurable resultintermsofwallpenetration.
Therefore, theseindications areidentified intheeddycurrentdatabaseandtheaffectedtubeswillbemonitored duringsubsequent examinations orotherwise dispositioned.
PSL-2APSL-28V2V4vl~~v5DH-(Top)(Bottom)09HOOH-07H06H05H04H03H02HOIHTSHTEHfliI!IIIfI-(Top)-(8ottom)09C38.25"08C38.25"07037.5"06C35.0e-05032.0"04C37.5w03035.0"-02032.0"OIC28.0"TSC.21.5TECINLETOUTLET'T.LUCIKIIleCt'atea~Kiev.1to7DrilledSupporte~Elev.8&9STEAKGENERATOR ARRANGEMENT Figure1 I
HEIlgglPDH-(top)DH(bottom)gyps~~>+~APEBENDRFG!ONTVBE,5UPPORT5PLANTST.LUClKUNlT2Figure2 TABLE1St.LucieUnit2-SummaofInservice EddCurrentExamination ResultsforOctober1987PSL-2APSL-2BTOTALTUBESEXAMINEDIndications ofWallPenetration Lessthan20420to39440to1004Total337272366IND186169211TubesPluggedbasedonWearProgression AnalysisandManagement Conservatism TubesPluggedWhichExceededPluggingLimitsTotalTubesPlugged10TotalTubesPluggedToDate208155 TABLE2St.LucieUnit2SteamGenerator TubesPluedDurintheOctober1987OutaeLineRowSteamGenerator AIndication Location565982929294981309413352424440381164040333736343533V4DHDCDHDHDHDCTSH+11.3LineRovSteamGenerator BIndication Location253869758087881001001118996133414849463692934351624553334747284253V2V2V4V1V3DHV3V3DCV2V2 St.LucieUnit2Examination ram-October1987SteamGenerator PSL-2AListofallTubeswithFlawsLineRowIndication 1Location2733485256575859616464738182879192929496969898108117127129130931051268494951321338394134474752691094244404050381389611353871163331273625403228402029212520332434373634263035222722222833V4+V2+DH+V3+V4+V4+V2DH+DH+V3+V2+DH+V3+V3+-DC+5C+TSC+DH+DH+DH+V3V3DC+DH+V2+5H+V3+V3+TSH+1.00.20.90.20.10.90.80.00.00.91.00.00.90.80.08.94.00.00.00.00.70.80.00.00.729.70.80.711.3 TABLE3St.LucieUnit2Examination Prram-October1987SteamGenerator PSL-2BListofallTubeswithFlawsLineRowIndication Location242534386869757678797980838788889799100100111122123134968996963213341112504749488949465697353692939497104304326516222455336212125333547473926282842532123208HV2V2+V2V4DH+V1+V37C+DC+DH+DC+DH+V3V3V3+V3+TSH+DC+DC+V2V2+V2V3+V1+1.00.90.50'0.90.00'0.90'0.00.00.00.00.70'0~00.820.80.00.00.90.61.10.70.5
