ML17261A624

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Proposed Tech Specs Incorporating Requirements for Reactor Vessel Level Indication Sys
ML17261A624
Person / Time
Site: Ginna Constellation icon.png
Issue date: 09/24/1987
From:
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17261A621 List:
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.D.3, TASK-2.E.1.2, TASK-2.F.1, TASK-2.F.2, TASK-2.G.1, TASK-TM NUDOCS 8710010029
Download: ML17261A624 (10)


Text

AttachmentARevisetheTechnicalSpecificationpagesasfollows:RemoveInsertpage3.5-15page4.1-7page3.5-15page4.1-7"971001002906000~4487092+PDR~DGC~PDRgj,p

'k TABLE3.5-4AccidentMonitorinInstrumentationTOTAIREQUIREDNO.OFCHANNELS(7)MINIMUMCHANNELSOPERABLE(7)1.PressurizerWaterLevel(1)2.AuxiliaryFeedwaterFlowRate(2)(3)3.SteamGeneratorWaterLevel-WideRange(3)2/steamgenerator1/steamgenerator1/steamgenerator1/steamgenerator4.ReactorCoolantSystemSubcoolingMarginMonitor(4)5.PressurizerPORVPositionindicator(5)6.PORVBlockValvePositionIndicator(1)7.PressurizerSafetyValvePositionIndicator(5)2/Valve1/Valve2/Valve1/Valve0/Valve1/Valve8.ContainmentPressure(8)9.ContainmentWaterLevel(NarrowRange,SumpA)1(6)1(6)10.ContainmentWaterIevel(WideRange,SumpB)ll.Core-ExitThermocouples12.ReactorVesselLevelIndicationSystem4/corequadrant2/corequadrantNotes(1)Emergencypowerforpressurizerequipment,NUREG-0737,itemII.G.l.(2)'3)Auxiliaryfeedwatersystemflowindication,NUREG-0737,itemII.E.1.2.Only2outofthe3indications(twosteamgeneratorauxiliaryfeedwaterflowandonewide-rangesteamgeneratorlevel)arerequiredtobeoperable,NUREG-0737,itemII.E.1.2.(4)Instrumentationfordetectionofinadequatecorecooling,NUREG-0737,itemII.'F.2.1.(5)Directindicationofreliefandsafetyvalveposition,NUREG-0737,itemII.D.3.TwochannelsincludeaprimarydetectorandRTDasthebackupdetector.(6)OperationmaycontinuewithlessthantheminimumchannelsoperableprovidedthattherequirementsofTechnicalSpecification3.1.5.1aremet.(7)SeeSpecification3.5.2forrequiredaction.(8)Containmentpressuremonitor,NUREG-0737,itemII.F.1.4.3s5)5Proposed II ChannelDescritionTABLE4.1-1'CONTINUED)CheckCalibrateTestRemarks25.ContainmentPressure26.SteamGeneratorPressureS27.TurbineFirstStagePressureSMNarrowrangecontainmentpressure(-3.0,+3psig)excluded28.EmergencyPlanRadiationInstruments29.j30.IEnvironmentalMonitorsLossofVoltage/DegradedVoltage480VoltSafeguardsBusNANANA31.TripofMainFeedwaterPumpsNA32.SteamFlowAVGNAR34.ChlorineDetector,ControlNARoomAirIntake35.036.AmmoniaDetector,ControlRoomAirIntakeNARadiationDetectors,ControlNARoomAirIntake37.ReactorVesselLevelIndicationSystemNA AttachmentBTheReactorVesselZ,evelIndication(RVZ,IS)wasinstalledduringtheSpring1986refuelingoutage.AdescriptionoftheRVLISandplansforimplementingrevisedEmergencyOperatingProcedureshavepreviouslybeenprovidedtotheNRCinlettersdatedDecember22,1986,March18,1987andSeptember18,1987.TheRVLISisbeingincorporatedintotheGinnaTechnicalSpecificationstosatisfyaNUREG-0737requirementtransmittedbyaD.G.EisenhutletterdatedNovember1,1983.Thisletterprovided"ModelTechnicalSpecifications"tobeincorporatedfortheRVLIS.TheproposedRVZIStechnicalspecificationsareidentical'tothemodelspecificationsexcepttheyhavebeenmodifiedtofittheGinnaformat.ThedetailedchangesarelistedonTable1.Inaccordancewith10CFR50.91,thischangetotheTechnicalSpecificationshasbeenevaluatedagainst,threecriteriatodetermineiftheoperationofthefacilityinaccordancewiththeproposedamendementwould:l.Involveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated;or2.Createthepossibilityofanewordifferentkindofaccidentpreviouslyevaluated;or3.Involveasignificantreductioninmarginofsafety.Theproposedchangesdonot,involveasignificant'hange-intheprobabilityofanaccidentpreviouslyevaluatedbecauseRVLISisaninstrumentsysteminvolvingsmallconnections(3/8inch)tothereactorcoolantsystem.TheRVLISprovidesnoautomaticactuationoncontrolfunctionsandthereforewillnot.impacttheprobabilityofpreviouslyanalyzedaccidents.IncorporationoftheRVLISintoTechnicalSpecificationsmaydecreasetheconsequencesofcertainaccidentsbyimplementinginstrumentationdesignedtodetect'an'daidintheresponsetoinadequatecorecooling.TheproposedchangesdonotcreatethepossibilityofanewordifferentkindofaccidentfromanypreviouslyevaluatedbecausethechangesinvolveonlyspecifyingoperabilityandsurveillancerequirementsoftheRVLIS.Theproposedchangesdonotinvolveasignificantreductioninmarginofsafetybecausespecifyingoperabilityandsurveill-ancerequirements,infact,increasesafetymarginsbyprovidingadditionalinformationusefultoplantoperatorsinrespondingtotransienteventsandaccidents.

1e~II Therefore,RochesterGasandElectricsubmitsthattheissuesassociatedwiththisamendment.requestareoutsidethecriteriaof10CFR50.91andanosignificanthazardsfindingiswarranted.

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Table1DetailedTechnicalSpecificationChangesLocationpp3.5-15pp4.1-7DescritionofChaneaddeditem12addeditem37ReasonforChaneNUREG-0737requirementNUREG-0737requirement