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{{#Wiki_filter: | {{#Wiki_filter:ROCHESTER GASANDELECTRICCORPORATION 0z-::89EASTAVENUE,ROCHESTER, N.Y.I4649LEOND.WHITE.JR.VICEPIISSIDCHT tSI.SPECIE ASSACOCCtla546-2700August24,1979Mr.BoyceH.Grier,DirectorU.S.NuclearRegulatory Commission OfficeofInspection andEnforcement RegionI631ParkAvenueKingofPrussia,PA19406 | ||
==Subject:== | ==Subject:== | ||
| Line 22: | Line 22: | ||
==DearMr.Grier:== | ==DearMr.Grier:== | ||
Inaccordance withtherequirements ofI6EBulletin79-17,wehavepreparedathirty(30)dayresponseonthestagnantboratedwatersystemsatR.E.GinnaNuclearPowerPlant,Unit.1.Stagnantportionsofsystemsthatareaccessible duringnormalreactoroperation, wheresurfaceandvolumetric examinations havenotbeenpreviously performed, shallbeexaminedwithinthenextsixty(60)daysinaccordance withtherequirements ofItem2oftheBulletin. | |||
Ifyouhaveanyfurtherquestions donothesitateincontacting us~Verytrulyyours,IIL.D.Whie,Jr.AEC:dmaF4 xc:DirectorDivisionofOperating ReactorsU.S.NuclearRegulatory Commission OfficeofInspection andEnforcement Washington, D.C.20555 ll R.E.GinnaNuclearPowerPlant,Unit1DocketNo.50-244Thirty(30)DayResponsetoI6EBulletin79-17PipeCracksinStagnantBoratedWaterSystemsatPWRPlantAugust24,19791.Thefollowing safetyrelatedstainless steelpipingsystemsasdelineated bytheRochester Gas&ElectricCorporation QualityAssurance Manualcontainstagnantoxygenated boratedwater.a.SafetyInjection System-ThisincludestheSafetyIn-jection(SI)PumpsuctionfromtheBoricAcidStorageTanksandtheSIPumpsdischarge fromvalves888A&Band871AGBtotheReactorCoolantSystemLoopsAGBHot,andColdLegs.b.Containment SpraySystem-ThisincludestheContainment SprayPumpsdischarge fromvalves868AGBtothespraypipinginsidecontainment attheelevation oftheCharcoalDousingSystemcheckvalves.c~ResidualHeatRemovalSystem-ThisincludestheResidualHeatRemovalPumpssuctionfromtheReactorCoolantSystemLoopAHotLegandContainment SumpBandtheRHRpumpsdischarge aftertheRHRHeatExchangers tothesuctionoftheSIPumps,fromPenetration P-111totheReactorCoolantSystemLoopBColdLegandtheSafetyInjection NozzlesontheReactorVessel.Alsofromthedischarge pipingarebranchconnections fortheResidualHeatRe-movalsampleandtotheLetdownsystem.d.Chemical6VolumeControlSystem-ThisincludestheportionofthissystemwhichprovideflowpathsforboricacidfromtheBoricAcidStorageTankstotheChargingPumpsuctionthroughvalvesV-350andV-356.e.Refueling WaterCirculating System-ThisincludespipingfromtheLetdownSystemtovalvesV-820andV-821.f.ReactorCoolantSystem-ThisincludesonlythePressurizer CodeSafetyValveloopseals.1a.Systempressuretests(hydro)andvisualexaminations inaccordance withtheASMEBGPVCode1974EditionSectionXIArticleIWA-5000havebeenperformed forallsystemsidenti-fiedabove.Thefollowing isalistingofthesesystemsandthedateofthetests.a.SafetyInjection System:*SuctionpipingDischarge piping5/13/775/6/77Page1of5 | |||
b. | b.Containment SpraySystem:Suctionpiping(including NaOH)Discharge pipingc.ResidualHeatRemoval:*SuctionpipingDischarge piping(including samplepiping)Tie-intotheLetdownSystemd.Chemical6VolumeControlSystem:Immediate boratepathsV-350andV-356e.Refueling WaterCirculating System:Suction(letdowntoV-820)Discharge (V-821toletdown)5/13/775/16/773/5/793/5/795/7/773/18'/765/7/775/7/77f.ReactorCoolantSystem:Pressurizer SafetyValveLoopSeals4/29/78*NOTE-ThoseportionsofthesesystemswhichtieintotheReactorCoolantSystem(RCS)wereisolatedfromtheRCSduringtheirhydrotest. | ||
Theremaining pipingtotheRCSwashydrotested duringtheRCShydrotest on4/29/78.Inaccordance withtheInservice Inspection ProgramfoundinRochester GasandElectric's QualityAssurance Manual,AppendixB,whichmeetstherequirements of10CFR50.55a(g), | |||
surfaceandvolumetric examinations havebeenperformed ontheSafetyIn-jectionSystem,ResidualHeatRemovalSystemandthePressurizer SafetyValveloopseals.Surfaceandvolumetric examinations arenotperformed ontheContainment SpraySystem,ChemicalandVolumeControlSystems,theRefueling WaterCirculating SystemandportionsoftheSafetyInjection Systemforthefollowing reasons:a.Containment SpraySystems-Thisportionofthesystemareexemptedcomponents asallowedbytheASMEBGPVCode1974EditionSectionXIArticlesIWC-1220. | |||
b.Chemical6VolumeControlSystem-Theportionsofthissystemareexemptedcomponents asallowedbytheASMEB&PVCode1974EditionSectionXIArticlesIWC-1220andarenotwithinthescopeofArticleIWD-2600. | |||
c.Refueling WaterCirculating System-TheportionsofthissystemarenotwithinthescopeoftheASMEBGPVCode1974EditionSectionXIArticleIWD-2600. | |||
Page2of5 | |||
d. | d.SafetyInjection System-Theportionsincludethe3"and4"discharge pipingwhichareexemptedcomponents bytheASMEBGPVCode1974EditionSectionXIArticleIWC-1220. | ||
Thefollowing isasummaryofinservice inspection, visual,surfaceandvolumetric examinations performed ontheSafetyInjection System,ResidualHeatRemovalSystemandthePressurizer SafetyValveLoopSealswithinthe10yearperiodfrom1970to1979.Theseexami-nationshavebeencategorized bylowpressure/high pressure(suction/discharge) andbypipesize..a.SafetyInjection LowPressure: | |||
8II10"HighPressure: | |||
2IIVisual20welds'1weld13weldsSurfaceandVolumetric 65RT's,85weldsUT's9welds1weldb.ResidualHeatRemoval:LowPressure: | |||
6II8li10"HighPressure: | |||
41I6Tl8II10"Visual01weld14welds04welds1weld3weldsSurfaceandVolumetric 2welds3welds28welds2welds15welds11welds12weldsc~SafetyLine4IIPressurizer SafetyValveLoopSeals:SurfaceandVisualVolumetric 3welds.5weldsTheseinservice examinations wereconducted inaccordance withtheASMEBoilerandPressureVesselCodeJuly1,1974,EditionsofSectionsVandXIthroughtheSummer1975Addenda.Thiswouldincludetheprocedure qualification requirements andacceptance criteria. | |||
However,onOctober8,1976aleakwasdetectedinasectionof8"Schedule10stainless steelpipeasreportedinLER76-24onOctober11,1976.Thisleakresultedinultrasonic examination beingperformed on75weldsintheaffectedsystem.Theprocedures andtechniques usedwerequalified andverifiedoncrackedpipingwhich'had beenremovedfromserviceandutilizedasatestmock-up.Severalotherweldsinrelatedsystemswerealsoexaminedwithnofurtherproblemsfound.Corrective actiononthecracksfoundbothfromleakageandultra-sonicexaminations werelistedinLER76-24onOctober11,1976andsupplemented reportsonOctober22,1979,December21,1976,February10,1977andJune8,1977.Page3of5 | |||
~~1b. | ~~1b.Certainportionsofthosesystemidentified aboveareinter-mittently stagnantandarerecirculated onamonthlybasisorhaveflowoccuringonaquarterly basiswithwaterfromtheRefueling WaterStorageTank.Thesesystemsareasfollows:a.SafetyXnjection System-ThisincludesthesuctionfromtheRefueling WaterStorageTankthroughtheSlPumpstotheRefueling WaterStorageTank,whichisrecirculated onamonthlybasis.b.Containment SpraySystem-Thisincludesthesuctionfrom'heRefueling WaterStorageTankthroughtheCSPumpstotheRefueling WaterStorageTank,whichisrecirculated onamonthlybasis.c.ResidualHeatRemovalSystem-ThisincludesthesuctionfromtheRefueling WaterStorageTankthroughtheRHRPumpsandRHRHeatExchangers totheRefueling WaterStorageTank,whichisrecirculated onamonthlybasis.d.Chemical8VolumeControlSystem-ThisincludesthepipingfromtheRefueling WaterStorageTankthroughvalveAOV-112BtothesuctionogtheChargingPumps.whichreceivesflowduringthequarterly testingofAOV-112B. | ||
~A 1c. | Chemistry controlsfortheRefueling WaterStorageTankandtheBoricAcidStorageTanksfollows:a.Refueling WaterStorageTank(RWST):Thechemistry oftheRWSTiscontrolled byuseofthespentfuelpitdemineralizer. | ||
Priortoandaftereachrefueling theRWSTisnormallyrecirculated tobringtheCl6Fwithinspecification. | |||
TheWestinghouse specifi-cationswere0.5ppmC1and0.15ppmF.Thenewlimitsare0.15ppmforbothClSF.WehavenormallybeenwithinlimitsforFbutoccasionally the0.5ppmlimitforchloridehasbeenexceeded. | |||
OxygenintheRWSTisnotsampledandtherearenoconcentration requirements. | |||
TheRWSTisopentoatmosphere andtherefore willabsorboxygen,soaconcentration specification ismeaningless. | |||
Boronismaintained between2000-3000ppmandsampledmonthly.b.BoricAcidStorageTanks:Chloride, | |||
: Flouride, OxygenandpHarenotnormallysampledforonthestoragetanks.Theonlycontrolfortheseimpurities isbydemineralization ofallprocessed boricacid(mixedbedandcationD.Z.'s).Boronconcentration ischeckedthreetimesperweek.Modifications previously completed toincreaserecirculation ofthesetankshas.beenforwarded totheNRCunderLER76-24.Reference item1dofthisbulletinresponse.'age 4of5 | |||
~A 1c.Preservice nondestructive examinations performed ontheweldjointsofthesepipingsystemswasvolumetric utilizing radiographic examinations. | |||
Theseexaminations wereper-formedbytheM.W.KelloggCo.duringspoolpieceshopfabrication andbyPittsburgh TestingLaboratories duringfieldinstallation. | |||
Allradiography wasperformed inaccordance withtheAmericanNationalStandardCodeforPressurePipingANSIB-31.1.1d.Rochester GasandElectricCorporation reportedtotheUSNRConOctober8,1976byLicenseeEventReport76-24,information regarding cracksintheSafetyInjection PipingbetweentheBoricAcidStorageTanksandandtheSafetyInjection Pump.Supplemental reportswereforwarded totheNRCon11/11/76, 11/22/76, 2/10/77and6/8/77regarding LER76-24.Alsoon12/21/76, RGGEprovidedtheNRCwithresponsetoI&ECircular76-06.Allcorrective actionsperformed asaresultofLER76-24andIGECircular76-06areincludedinthesecorre-spondences. | |||
Page5of5 I0III'g~~}} | |||
Revision as of 14:00, 29 June 2018
| ML17244A863 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 08/24/1979 |
| From: | WHITE L D ROCHESTER GAS & ELECTRIC CORP. |
| To: | GRIER B H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 7910030590 | |
| Download: ML17244A863 (12) | |
Text
ROCHESTER GASANDELECTRICCORPORATION 0z-::89EASTAVENUE,ROCHESTER, N.Y.I4649LEOND.WHITE.JR.VICEPIISSIDCHT tSI.SPECIE ASSACOCCtla546-2700August24,1979Mr.BoyceH.Grier,DirectorU.S.NuclearRegulatory Commission OfficeofInspection andEnforcement RegionI631ParkAvenueKingofPrussia,PA19406
Subject:
I8EBulletin79-17Thirty(30)DayResponseR.E.GinnaNuclearPowerPlant,Unit1DocketNo.50-244
DearMr.Grier:
Inaccordance withtherequirements ofI6EBulletin79-17,wehavepreparedathirty(30)dayresponseonthestagnantboratedwatersystemsatR.E.GinnaNuclearPowerPlant,Unit.1.Stagnantportionsofsystemsthatareaccessible duringnormalreactoroperation, wheresurfaceandvolumetric examinations havenotbeenpreviously performed, shallbeexaminedwithinthenextsixty(60)daysinaccordance withtherequirements ofItem2oftheBulletin.
Ifyouhaveanyfurtherquestions donothesitateincontacting us~Verytrulyyours,IIL.D.Whie,Jr.AEC:dmaF4 xc:DirectorDivisionofOperating ReactorsU.S.NuclearRegulatory Commission OfficeofInspection andEnforcement Washington, D.C.20555 ll R.E.GinnaNuclearPowerPlant,Unit1DocketNo.50-244Thirty(30)DayResponsetoI6EBulletin79-17PipeCracksinStagnantBoratedWaterSystemsatPWRPlantAugust24,19791.Thefollowing safetyrelatedstainless steelpipingsystemsasdelineated bytheRochester Gas&ElectricCorporation QualityAssurance Manualcontainstagnantoxygenated boratedwater.a.SafetyInjection System-ThisincludestheSafetyIn-jection(SI)PumpsuctionfromtheBoricAcidStorageTanksandtheSIPumpsdischarge fromvalves888A&Band871AGBtotheReactorCoolantSystemLoopsAGBHot,andColdLegs.b.Containment SpraySystem-ThisincludestheContainment SprayPumpsdischarge fromvalves868AGBtothespraypipinginsidecontainment attheelevation oftheCharcoalDousingSystemcheckvalves.c~ResidualHeatRemovalSystem-ThisincludestheResidualHeatRemovalPumpssuctionfromtheReactorCoolantSystemLoopAHotLegandContainment SumpBandtheRHRpumpsdischarge aftertheRHRHeatExchangers tothesuctionoftheSIPumps,fromPenetration P-111totheReactorCoolantSystemLoopBColdLegandtheSafetyInjection NozzlesontheReactorVessel.Alsofromthedischarge pipingarebranchconnections fortheResidualHeatRe-movalsampleandtotheLetdownsystem.d.Chemical6VolumeControlSystem-ThisincludestheportionofthissystemwhichprovideflowpathsforboricacidfromtheBoricAcidStorageTankstotheChargingPumpsuctionthroughvalvesV-350andV-356.e.Refueling WaterCirculating System-ThisincludespipingfromtheLetdownSystemtovalvesV-820andV-821.f.ReactorCoolantSystem-ThisincludesonlythePressurizer CodeSafetyValveloopseals.1a.Systempressuretests(hydro)andvisualexaminations inaccordance withtheASMEBGPVCode1974EditionSectionXIArticleIWA-5000havebeenperformed forallsystemsidenti-fiedabove.Thefollowing isalistingofthesesystemsandthedateofthetests.a.SafetyInjection System:*SuctionpipingDischarge piping5/13/775/6/77Page1of5
b.Containment SpraySystem:Suctionpiping(including NaOH)Discharge pipingc.ResidualHeatRemoval:*SuctionpipingDischarge piping(including samplepiping)Tie-intotheLetdownSystemd.Chemical6VolumeControlSystem:Immediate boratepathsV-350andV-356e.Refueling WaterCirculating System:Suction(letdowntoV-820)Discharge (V-821toletdown)5/13/775/16/773/5/793/5/795/7/773/18'/765/7/775/7/77f.ReactorCoolantSystem:Pressurizer SafetyValveLoopSeals4/29/78*NOTE-ThoseportionsofthesesystemswhichtieintotheReactorCoolantSystem(RCS)wereisolatedfromtheRCSduringtheirhydrotest.
Theremaining pipingtotheRCSwashydrotested duringtheRCShydrotest on4/29/78.Inaccordance withtheInservice Inspection ProgramfoundinRochester GasandElectric's QualityAssurance Manual,AppendixB,whichmeetstherequirements of10CFR50.55a(g),
surfaceandvolumetric examinations havebeenperformed ontheSafetyIn-jectionSystem,ResidualHeatRemovalSystemandthePressurizer SafetyValveloopseals.Surfaceandvolumetric examinations arenotperformed ontheContainment SpraySystem,ChemicalandVolumeControlSystems,theRefueling WaterCirculating SystemandportionsoftheSafetyInjection Systemforthefollowing reasons:a.Containment SpraySystems-Thisportionofthesystemareexemptedcomponents asallowedbytheASMEBGPVCode1974EditionSectionXIArticlesIWC-1220.
b.Chemical6VolumeControlSystem-Theportionsofthissystemareexemptedcomponents asallowedbytheASMEB&PVCode1974EditionSectionXIArticlesIWC-1220andarenotwithinthescopeofArticleIWD-2600.
c.Refueling WaterCirculating System-TheportionsofthissystemarenotwithinthescopeoftheASMEBGPVCode1974EditionSectionXIArticleIWD-2600.
Page2of5
d.SafetyInjection System-Theportionsincludethe3"and4"discharge pipingwhichareexemptedcomponents bytheASMEBGPVCode1974EditionSectionXIArticleIWC-1220.
Thefollowing isasummaryofinservice inspection, visual,surfaceandvolumetric examinations performed ontheSafetyInjection System,ResidualHeatRemovalSystemandthePressurizer SafetyValveLoopSealswithinthe10yearperiodfrom1970to1979.Theseexami-nationshavebeencategorized bylowpressure/high pressure(suction/discharge) andbypipesize..a.SafetyInjection LowPressure:
8II10"HighPressure:
2IIVisual20welds'1weld13weldsSurfaceandVolumetric 65RT's,85weldsUT's9welds1weldb.ResidualHeatRemoval:LowPressure:
6II8li10"HighPressure:
41I6Tl8II10"Visual01weld14welds04welds1weld3weldsSurfaceandVolumetric 2welds3welds28welds2welds15welds11welds12weldsc~SafetyLine4IIPressurizer SafetyValveLoopSeals:SurfaceandVisualVolumetric 3welds.5weldsTheseinservice examinations wereconducted inaccordance withtheASMEBoilerandPressureVesselCodeJuly1,1974,EditionsofSectionsVandXIthroughtheSummer1975Addenda.Thiswouldincludetheprocedure qualification requirements andacceptance criteria.
However,onOctober8,1976aleakwasdetectedinasectionof8"Schedule10stainless steelpipeasreportedinLER76-24onOctober11,1976.Thisleakresultedinultrasonic examination beingperformed on75weldsintheaffectedsystem.Theprocedures andtechniques usedwerequalified andverifiedoncrackedpipingwhich'had beenremovedfromserviceandutilizedasatestmock-up.Severalotherweldsinrelatedsystemswerealsoexaminedwithnofurtherproblemsfound.Corrective actiononthecracksfoundbothfromleakageandultra-sonicexaminations werelistedinLER76-24onOctober11,1976andsupplemented reportsonOctober22,1979,December21,1976,February10,1977andJune8,1977.Page3of5
~~1b.Certainportionsofthosesystemidentified aboveareinter-mittently stagnantandarerecirculated onamonthlybasisorhaveflowoccuringonaquarterly basiswithwaterfromtheRefueling WaterStorageTank.Thesesystemsareasfollows:a.SafetyXnjection System-ThisincludesthesuctionfromtheRefueling WaterStorageTankthroughtheSlPumpstotheRefueling WaterStorageTank,whichisrecirculated onamonthlybasis.b.Containment SpraySystem-Thisincludesthesuctionfrom'heRefueling WaterStorageTankthroughtheCSPumpstotheRefueling WaterStorageTank,whichisrecirculated onamonthlybasis.c.ResidualHeatRemovalSystem-ThisincludesthesuctionfromtheRefueling WaterStorageTankthroughtheRHRPumpsandRHRHeatExchangers totheRefueling WaterStorageTank,whichisrecirculated onamonthlybasis.d.Chemical8VolumeControlSystem-ThisincludesthepipingfromtheRefueling WaterStorageTankthroughvalveAOV-112BtothesuctionogtheChargingPumps.whichreceivesflowduringthequarterly testingofAOV-112B.
Chemistry controlsfortheRefueling WaterStorageTankandtheBoricAcidStorageTanksfollows:a.Refueling WaterStorageTank(RWST):Thechemistry oftheRWSTiscontrolled byuseofthespentfuelpitdemineralizer.
Priortoandaftereachrefueling theRWSTisnormallyrecirculated tobringtheCl6Fwithinspecification.
TheWestinghouse specifi-cationswere0.5ppmC1and0.15ppmF.Thenewlimitsare0.15ppmforbothClSF.WehavenormallybeenwithinlimitsforFbutoccasionally the0.5ppmlimitforchloridehasbeenexceeded.
OxygenintheRWSTisnotsampledandtherearenoconcentration requirements.
TheRWSTisopentoatmosphere andtherefore willabsorboxygen,soaconcentration specification ismeaningless.
Boronismaintained between2000-3000ppmandsampledmonthly.b.BoricAcidStorageTanks:Chloride,
- Flouride, OxygenandpHarenotnormallysampledforonthestoragetanks.Theonlycontrolfortheseimpurities isbydemineralization ofallprocessed boricacid(mixedbedandcationD.Z.'s).Boronconcentration ischeckedthreetimesperweek.Modifications previously completed toincreaserecirculation ofthesetankshas.beenforwarded totheNRCunderLER76-24.Reference item1dofthisbulletinresponse.'age 4of5
~A 1c.Preservice nondestructive examinations performed ontheweldjointsofthesepipingsystemswasvolumetric utilizing radiographic examinations.
Theseexaminations wereper-formedbytheM.W.KelloggCo.duringspoolpieceshopfabrication andbyPittsburgh TestingLaboratories duringfieldinstallation.
Allradiography wasperformed inaccordance withtheAmericanNationalStandardCodeforPressurePipingANSIB-31.1.1d.Rochester GasandElectricCorporation reportedtotheUSNRConOctober8,1976byLicenseeEventReport76-24,information regarding cracksintheSafetyInjection PipingbetweentheBoricAcidStorageTanksandandtheSafetyInjection Pump.Supplemental reportswereforwarded totheNRCon11/11/76, 11/22/76, 2/10/77and6/8/77regarding LER76-24.Alsoon12/21/76, RGGEprovidedtheNRCwithresponsetoI&ECircular76-06.Allcorrective actionsperformed asaresultofLER76-24andIGECircular76-06areincludedinthesecorre-spondences.
Page5of5 I0III'g~~