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{{#Wiki_filter: | {{#Wiki_filter:ATTACEBKNT ARevisetheTechnical Specification pagesasfollows:Remove4.5-34.5-8thru4.5-10Insert4.5-34.5-8thru4.5-104.5-11-8812070225 881129PDRADOCK05000244.PPDC IP' b.Acceptable levelsofperformance forthepumpsshallbethatthepumpsstart,operate,anddeveloptheminimumdischarge pressurefortheflowslistedinthetablebelow:PUMPSRECYCLEFLOWBATEDISCHARGE PRESSUREContainment SprayPumpsResidualHeatRemovalPumpsSafetyInjection Pumps35gpm[200gpm]450gpm[50gpm]150gpm240psig[140psig]138psig[1420psig]1356psigNotes(2)Table4.5-1Notes(1)Itemsinsquarebracketsareeffective untiltheinstallation ofthenewresidualheat.removalminimumflowrecirculation system.(2)Itemsinsquarebracketsareeffective untilinstallation ofthe,newsafetyinjection minimumflowrecirculation system."4.5.2.2Valvesa.Exceptduringcoldorrefueling shutdowns thesprayadditivevalvesshallbetestedatintervals nottoexceedonemonth.Withthepumpsshutdownandthevalvesupstreamanddownstream 4.5-3Proposed andverification madethatthecomponents receivethesafetyinjection inthepropersequence. | ||
efficiency. | Thetestdemonstrates theoperation ofthevalves,pumpcircuitbreakers, andautomatic circuitry.'uring reactoroperation, theinstrumentation whichisdependedonto.initiatesafetyinjection andcontainment sprayisgenerally checkeddailyandtheinitiating circuitsaretestedmonthly.Inaddition, theactivecomponents (pumpsandvalves)aretobetestedmonthlytochecktheoperation ofthestartingcircuitsandtoverifythatthepumpsareinsatisfactory runningorderanddeveloptheminimumrequiredpressuretomeetaccidentconditions.'~'he minimumdischarge pressurevalueslistedinTable4.5-1arebasedonanassumeddegradation ofthepumphead-capacity(characteristic) curveadjustedtowatertemperature of60Fasfollows:Containment SprayPumps5<<*ResidualHeatRemovalPumps5%*SafetyInjection Pumps3:**Percentage isbasedontheheadatthebestefficiency pointofflow.Thetestintervalofonemonthisbasedonthejudgement thatmorefrequenttestingwouldnotsignificantly increasethereliability (i.e.,theprobability thatthecomponent wouldoperatewhenrequired) andwouldresultinincreased wearoverlongperiodsoftime.4.5-8Proposed Othersystemsthatarealsoimportant totheemergency coolingfunctionaretheaccumulators, thecomponent coolingsystem,theservicewatersystemandthecontainment fancoolers.Theaccumulators areapassivesafeguard. | ||
Xnaccordance withthespecifications, thewatervolumeand.pressureintheaccumulators arechecked'eriodically. | |||
Theothersystemsmentioned operatewhenthereactorisinIoperation andbythesemeansarecontinuously monitored forsatisfactory performance. | |||
Thereactorcoolantdraintankpumpsoperateintermittently duringreactoroperation, andthusarealsomonitored forsatisfactory performance. | |||
Theairfiltration portionofthecontainment airrecirculation systemisapassivesafeguard whichisisolatedfromthecoolingairflowduringnormalreactoroperation. | |||
Hencethecharcoalshouldhavealongusefullifetime. | |||
Thefilterframesthathousethecharcoalarestainless steelandshouldalsolastindefinitely. | |||
Thepressure.,drop, filterefficiency, andvalveoperation testfrequencies willassurethatthesystemcanoperatetomeetitsdesignfunctionunderaccidentconditions. | |||
Astheadsorbing charcoalisnormallyisolated, thetestschedule, relatedtohoursofoperation aswellaselapsedtime,willassurethatitdoesnotdegradebelowtherequiredadsorption 4.5-9Proposed. | |||
efficiency. | |||
Thetestconditions forcharcoalsampleadsorbing efficiency arethosewhichmightbeencountered underanaccidentsituation.'~'he controlroomairtreatment systemisdesignedtofilterthecontrolroomatmosphere (recirculation andintakeair)duringcontrolroomisolation conditions. | |||
HEPAfiltersareinstalled beforethecharcoalfilterstoremoveparticulate matterand.preventcloggingoftheiodineadsorbers. | |||
The'harcoal filtersreducetheairborneradioiodine inthecontrolroom.Bypassleakagemustbeataminimuminorderforthesefilterstoperformtheirdesignedfunction. | |||
Iftheperformances areasspecified thecalculated doseswillbelessthanthoseanalyzed.'etesting ofthepostaccidentcharcoalsystemorthecontrolroomemergency airtreatment systemintheeventofpainting, | |||
-fire",orchemicalreleaseisrequiredonlyifthesystemisoperating andisKproviding filtration fortheareainwhichthepainting, fire,orchemicalreleaseoccurs.Testingoftheairfiltration systemswillbe,totheextentitcan,giventheconfiguration ofthe"systems,inaccordance withANSIN510-1975, "TestingofNuclearAir-Cleaning Systems." | |||
4.5-10Proposed References= | |||
(1)UFSARSection6.3''(2)UFSARFigures15.6-12and15.6-13(3)UFSARSection6.5.1.2.4 (4)UFSARSection6..4.3.14.5-11Proposed. | |||
ATTACE992lT BPlantmodifications plannedfortheSpring1989Refueling Outagewillmodifytheexistingminimumflowrecirculation systemsfortheresidualheatremoval(RHR)and,safetyinjection (SI)pumps.Thesemodifications arebeingimplemented inordertoofferanincreased. | |||
marginofpumpprotection duringconditions whichrequirepumpoperation atminimumflow.Theseconditions wouldexistwhenthereactorcoolantsystem(RCS)pressureishigherthantheshutoffheadofthepumps.Thenewdesignminimumflowwillbeincreased. | |||
abovetheflowthatpresently exists.Thisincreased recirculation flowcapability willprovidetheopportunity toconducttherequiredmonthlyperiodictestsatahigherpumpflowratethanispresently incorporated inTable4.5-1oftheTechnical Specifications andwhichisreflected inthepumpinservice testprogram.Adetaileddescription oftheplannedplantmodifications andevaluations ofthebenefitsofthesechangeswasprovidedtothe5RCinourresponsetoBulletin88-04,Potential Safety-Related PumpLoss,datedJuly7,1988andwhichisincorporated asapartofthisdocument. | |||
Increasing thesurveillance testflowrateforperiodicpumptestingwillreducethepotential forpumpinternalaccelerated wearduetolowflowoperation. | |||
RHRtestflowisproposedtobeincreased from200gpmto450gpm.SItestflowisproposedtobeincreased from50gpmto150gpm.ThedetailedchangesarelistedonTable1.Theproposed"recycleflowrate"fortheRHRpumpswillbeabletobeachievedbyutilizing thenewminimumflowrecirculation lineplannedaspartoftheRHRsystemmodification. | |||
The"recycleflowrate"fortheSIpumpswillbeabletobeachievedbyutilizing theexistingtestlinecombinedwiththenewminimumflowrecirculation lineaspartoftheSIplantmodification described inourresponsetoBulletin88-04.Theproposedflowrateswillbecomparable totheminimumflowvaluesrecommended bythepumpmanufacturers forcontinuous pumpoperation. | |||
Theyalsorepresent themaximumflowsobtainable duringpoweroperation. | |||
Thesurveillance testflowrates willbeincreased fortheRHRpumpsfrom11-oto25%ofbestefficiency pointofflowandfortheSIpumpsfrom12'-oto35-oofbestefficiency pointofflow.Priortotheplantmodifications beingcompleted, thesurveillance testflowrates andcorresponding discharge pressures mustremainasreflected inthecurrentTechnical Specifications. | |||
Thedischarge pressurevaluesintheTechnical Specification corresponding totherecycleflowratesforRHRandSIneedalsobeadjustedtoaccountfortheincrease'in testflowrate. | |||
Thenewdischarge pressurelimitshavebeendetermined byapplyinga5:degradation tothepumphead-capacity (characteristic) curvefortheRHRpumpsanda3%degradation totheSIcharacteristic curve.Pumpcharacteristic curvesaredepictedonFigures6.3-2and6.3-3oftheUFSAR.Thesepercentages arebaseduponthepumpdeveloped headatthebestefficiency pointofflow.Forexample,thetotaldeveloped headforthesafetyinjection pumpatthebestefficiency pointof425gpmis2310feet.The3:degradedpumpcurveisgenerated byreducingthepumpcurveby69.3feetoverthefullrangeofflows.Similarly, thetotaldeveloped headfortheresidualheatremovalpumpatthebestefficiency pointof1800gpmis264feet.The5%degradedpumpcurveisgenerated byreducingthepumpcurveby13.2feetoverthefullrangeofflows.aThedischarge pressurevaluesrepresent therequiredactionlimitsidentified byIMP-3000, SectionXI,1977Editionthroughsummer1978addenda.Thenewdischarge pressurelimitshavebeenestablished consistent withthebasisusedforthecurrentpressures intheTechnical Specification surveillance testtablewhichareapplicable tocurrently-established testflowrates. | |||
Inessence,thenewdischarge pressurelimitsfallontheassumedperformance degradation curvesthathavebeenestablished fortheRHRandSIpumps.Apumpcanbejudged.acceptable based,uponpressureverification atonepointonthiscurveduringthesurveillance test.Inthiscase,thetestpointissimplybeingreadjusted furtheroutonthedegradedperformance curve.Hydraulic analyseshavebeenperformed confirming thatdischarge pressurevaluesatorabovetheproposed, limitswillmeettherequirements forsystemdeliveryunderaccidentconditions asestablished byFigures15.6-12and15.6-13intheUFSAR.TheseanalysesutilizedtheKYPIPEcomputercodedeveloped byNUSCorporation fortheemergency corecoolingsystemforR.E.Ginna.Thiscodehasbeenvalidated. | |||
inaccordance withtheapprovedQualityAssurance Program.TheresultsoftheanalysesrelatingsystemdeliveryversusRCSpressureareshownplottedontheattachedFigures1and2.Thecurvesshowthatrequiredsystemdeliveryisachievedassumingthe5%degradedRHRpumpperformance curve(Figure1)andthe3%degradedSIpumpperformance curve(Figure2).Thecurvesdepictedrepresent themostconservative casesintermsofparameters utilizedwhichlimittheflowdelivered totheRCS.Table1depictsthespecificTechnical Specification changes.Inaccordance with10CFR50.91, thesechangestotheTechnical Specifications havebeenevaluated todetermine iftheoperation ofthefacilityinaccordance withtheproposedamendment would:B-2 1.involveasignificant increaseintheprobability orconsequences ofanaccidentpreviously evaluated; or2.createthepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously evaluated; or3.involveasignificant reduction in.amarginofsafety.Theproposedchangestothesurveillance testsdonotinvolveasignificant changeintheprobability ofanaccidentpreviously evaluated becausetheproposedchangesarebeingmadetoimproveoperability ofthecomponents byreducingthepotential foraccelerated wearduetolowflowoperation duringsurveillance testing.Theproposed. | |||
changesdonotinvolveasignificant changeintheconsequences ofaccidents previously analyzedbecausethe=flowdelivered totheRCSasaresultoftheincreaseinrecirculation flowwillremainabovetherequired. | |||
flowdeliverycurvewhichisutilizedintheaccidentanalysis. | |||
Theproposedchangestothesurveillance testsdonotcreatethepossibility ofanewordifferent kindofaccidentfromanypreviously evaluated becausetheproposedchangesaffectonlythesurveillance testrequirement oftheexistingresidualheatremovalandsafety'injection pumps.Thebasisuponwhichthepumpsarejudgedacceptable isnotchanged,thatis,baseduponnotexceeding themaximumalloweddegradation ofthepumphead-capacitycurvethathasbeendemonstrated tomeettherequireddeliverycurves,Figures15.6-12and15.6-13oftheUFSAR.Theproposedchangestothesurveillance testsdonotinvolveasignificant reduction inthemarginofsafetybecausetheincreased recirculation testflowratewill,infact,increasesafetymarginsbyreducingthepotential foraccelerated wearduetooperation atlowflows.Surveillance testingforthesafetyinjection pumpsencompasses thevastmajorityoftheirexpectedyearlyoperating timeandtherefore theincreaseinthetestflowratefrom12-oto35%ofbestefficiency pointofflowwillbeequivalent totheminimumflowrecommended bythepumpmanufacturer forcontinuous pumpoperation. | |||
Theresidualheatremovalpumpsoperateduringplantcooldowns andrefueling operations atflowrates wellbeyondthesurveillance testflowrate. | |||
Theyearlyoperating timeforthesepumpswhilespentinthesurveillance testmodeissmallcomparedtothetotalexpectedoperating time,intheorderof5%.Nevertheless, increasing thetestflowratefrom11%to25%ofbestefficiency pointofflowwillhaveapositivelongtermeffect.ThebasisforGinnaTechnical Specifications relatedtoSXandRHRsurveillance testingflowrates anddischarge pressureistheassumedminimumpumpdeliverycharacteristics usedintheUFSARChapter15accidentanalyses. | |||
Becauseallsuchassumptions remainunchanged asaresultofthisproposedlicenseamendment, theoverallmarginofsafetyisnotreduced,anditdoesnotinvolveanunreviewed, safetyquestion. | |||
B-3 Therefore, Rochester GasandElectricsubmitsthattheissuesassociated withthisAmendment requestareoutsidethecriteriaof10CFR50.91 andanosignificant hazardsfindingiswarranted. | |||
B-4 | |||
~I~t~~~fII'II~~~~~~~~~~~~~I0I''II~~~~I'l'I:II | ~I~t~~~fII'II~~~~~~~~~~~~~I0I''II~~~~I'l'I:II | ||
==- | ==-SAFETYlNJECTlON FLOWCVC4UMPDEGRADEDOXD~'CI41~i~lAUJCL.J~REQUIREDEPZgo+x~0xvaw~~lJI-QOgIO~M~Xo>nXCYCDI~ZZZ4JCLUMPDEGRADED~~SIFlOW-GPMx100~~1.REQUIREDFlOWBASEDONUFSARFIGURE15.6-122.BASEDON:~SISPUMPPERFORMANCE DEGRADED.~SIPUMPSUCTIONHEAD=15%RWSTLEVEl~PUMPCINJECTING INTOLOOPgCOLDLEG.~~~}} | ||
Revision as of 14:40, 29 June 2018
| ML17251A378 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 11/29/1988 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17251A376 | List: |
| References | |
| NUDOCS 8812070225 | |
| Download: ML17251A378 (13) | |
Text
{{#Wiki_filter:ATTACEBKNT ARevisetheTechnical Specification pagesasfollows:Remove4.5-34.5-8thru4.5-10Insert4.5-34.5-8thru4.5-104.5-11-8812070225 881129PDRADOCK05000244.PPDC IP' b.Acceptable levelsofperformance forthepumpsshallbethatthepumpsstart,operate,anddeveloptheminimumdischarge pressurefortheflowslistedinthetablebelow:PUMPSRECYCLEFLOWBATEDISCHARGE PRESSUREContainment SprayPumpsResidualHeatRemovalPumpsSafetyInjection Pumps35gpm[200gpm]450gpm[50gpm]150gpm240psig[140psig]138psig[1420psig]1356psigNotes(2)Table4.5-1Notes(1)Itemsinsquarebracketsareeffective untiltheinstallation ofthenewresidualheat.removalminimumflowrecirculation system.(2)Itemsinsquarebracketsareeffective untilinstallation ofthe,newsafetyinjection minimumflowrecirculation system."4.5.2.2Valvesa.Exceptduringcoldorrefueling shutdowns thesprayadditivevalvesshallbetestedatintervals nottoexceedonemonth.Withthepumpsshutdownandthevalvesupstreamanddownstream 4.5-3Proposed andverification madethatthecomponents receivethesafetyinjection inthepropersequence. Thetestdemonstrates theoperation ofthevalves,pumpcircuitbreakers, andautomatic circuitry.'uring reactoroperation, theinstrumentation whichisdependedonto.initiatesafetyinjection andcontainment sprayisgenerally checkeddailyandtheinitiating circuitsaretestedmonthly.Inaddition, theactivecomponents (pumpsandvalves)aretobetestedmonthlytochecktheoperation ofthestartingcircuitsandtoverifythatthepumpsareinsatisfactory runningorderanddeveloptheminimumrequiredpressuretomeetaccidentconditions.'~'he minimumdischarge pressurevalueslistedinTable4.5-1arebasedonanassumeddegradation ofthepumphead-capacity(characteristic) curveadjustedtowatertemperature of60Fasfollows:Containment SprayPumps5<<*ResidualHeatRemovalPumps5%*SafetyInjection Pumps3:**Percentage isbasedontheheadatthebestefficiency pointofflow.Thetestintervalofonemonthisbasedonthejudgement thatmorefrequenttestingwouldnotsignificantly increasethereliability (i.e.,theprobability thatthecomponent wouldoperatewhenrequired) andwouldresultinincreased wearoverlongperiodsoftime.4.5-8Proposed Othersystemsthatarealsoimportant totheemergency coolingfunctionaretheaccumulators, thecomponent coolingsystem,theservicewatersystemandthecontainment fancoolers.Theaccumulators areapassivesafeguard. Xnaccordance withthespecifications, thewatervolumeand.pressureintheaccumulators arechecked'eriodically. Theothersystemsmentioned operatewhenthereactorisinIoperation andbythesemeansarecontinuously monitored forsatisfactory performance. Thereactorcoolantdraintankpumpsoperateintermittently duringreactoroperation, andthusarealsomonitored forsatisfactory performance. Theairfiltration portionofthecontainment airrecirculation systemisapassivesafeguard whichisisolatedfromthecoolingairflowduringnormalreactoroperation. Hencethecharcoalshouldhavealongusefullifetime. Thefilterframesthathousethecharcoalarestainless steelandshouldalsolastindefinitely. Thepressure.,drop, filterefficiency, andvalveoperation testfrequencies willassurethatthesystemcanoperatetomeetitsdesignfunctionunderaccidentconditions. Astheadsorbing charcoalisnormallyisolated, thetestschedule, relatedtohoursofoperation aswellaselapsedtime,willassurethatitdoesnotdegradebelowtherequiredadsorption 4.5-9Proposed. efficiency. Thetestconditions forcharcoalsampleadsorbing efficiency arethosewhichmightbeencountered underanaccidentsituation.'~'he controlroomairtreatment systemisdesignedtofilterthecontrolroomatmosphere (recirculation andintakeair)duringcontrolroomisolation conditions. HEPAfiltersareinstalled beforethecharcoalfilterstoremoveparticulate matterand.preventcloggingoftheiodineadsorbers. The'harcoal filtersreducetheairborneradioiodine inthecontrolroom.Bypassleakagemustbeataminimuminorderforthesefilterstoperformtheirdesignedfunction. Iftheperformances areasspecified thecalculated doseswillbelessthanthoseanalyzed.'etesting ofthepostaccidentcharcoalsystemorthecontrolroomemergency airtreatment systemintheeventofpainting, -fire",orchemicalreleaseisrequiredonlyifthesystemisoperating andisKproviding filtration fortheareainwhichthepainting, fire,orchemicalreleaseoccurs.Testingoftheairfiltration systemswillbe,totheextentitcan,giventheconfiguration ofthe"systems,inaccordance withANSIN510-1975, "TestingofNuclearAir-Cleaning Systems." 4.5-10Proposed References= (1)UFSARSection6.3(2)UFSARFigures15.6-12and15.6-13(3)UFSARSection6.5.1.2.4 (4)UFSARSection6..4.3.14.5-11Proposed. ATTACE992lT BPlantmodifications plannedfortheSpring1989Refueling Outagewillmodifytheexistingminimumflowrecirculation systemsfortheresidualheatremoval(RHR)and,safetyinjection (SI)pumps.Thesemodifications arebeingimplemented inordertoofferanincreased. marginofpumpprotection duringconditions whichrequirepumpoperation atminimumflow.Theseconditions wouldexistwhenthereactorcoolantsystem(RCS)pressureishigherthantheshutoffheadofthepumps.Thenewdesignminimumflowwillbeincreased. abovetheflowthatpresently exists.Thisincreased recirculation flowcapability willprovidetheopportunity toconducttherequiredmonthlyperiodictestsatahigherpumpflowratethanispresently incorporated inTable4.5-1oftheTechnical Specifications andwhichisreflected inthepumpinservice testprogram.Adetaileddescription oftheplannedplantmodifications andevaluations ofthebenefitsofthesechangeswasprovidedtothe5RCinourresponsetoBulletin88-04,Potential Safety-Related PumpLoss,datedJuly7,1988andwhichisincorporated asapartofthisdocument. Increasing thesurveillance testflowrateforperiodicpumptestingwillreducethepotential forpumpinternalaccelerated wearduetolowflowoperation. RHRtestflowisproposedtobeincreased from200gpmto450gpm.SItestflowisproposedtobeincreased from50gpmto150gpm.ThedetailedchangesarelistedonTable1.Theproposed"recycleflowrate"fortheRHRpumpswillbeabletobeachievedbyutilizing thenewminimumflowrecirculation lineplannedaspartoftheRHRsystemmodification. The"recycleflowrate"fortheSIpumpswillbeabletobeachievedbyutilizing theexistingtestlinecombinedwiththenewminimumflowrecirculation lineaspartoftheSIplantmodification described inourresponsetoBulletin88-04.Theproposedflowrateswillbecomparable totheminimumflowvaluesrecommended bythepumpmanufacturers forcontinuous pumpoperation. Theyalsorepresent themaximumflowsobtainable duringpoweroperation. Thesurveillance testflowrates willbeincreased fortheRHRpumpsfrom11-oto25%ofbestefficiency pointofflowandfortheSIpumpsfrom12'-oto35-oofbestefficiency pointofflow.Priortotheplantmodifications beingcompleted, thesurveillance testflowrates andcorresponding discharge pressures mustremainasreflected inthecurrentTechnical Specifications. Thedischarge pressurevaluesintheTechnical Specification corresponding totherecycleflowratesforRHRandSIneedalsobeadjustedtoaccountfortheincrease'in testflowrate. Thenewdischarge pressurelimitshavebeendetermined byapplyinga5:degradation tothepumphead-capacity (characteristic) curvefortheRHRpumpsanda3%degradation totheSIcharacteristic curve.Pumpcharacteristic curvesaredepictedonFigures6.3-2and6.3-3oftheUFSAR.Thesepercentages arebaseduponthepumpdeveloped headatthebestefficiency pointofflow.Forexample,thetotaldeveloped headforthesafetyinjection pumpatthebestefficiency pointof425gpmis2310feet.The3:degradedpumpcurveisgenerated byreducingthepumpcurveby69.3feetoverthefullrangeofflows.Similarly, thetotaldeveloped headfortheresidualheatremovalpumpatthebestefficiency pointof1800gpmis264feet.The5%degradedpumpcurveisgenerated byreducingthepumpcurveby13.2feetoverthefullrangeofflows.aThedischarge pressurevaluesrepresent therequiredactionlimitsidentified byIMP-3000, SectionXI,1977Editionthroughsummer1978addenda.Thenewdischarge pressurelimitshavebeenestablished consistent withthebasisusedforthecurrentpressures intheTechnical Specification surveillance testtablewhichareapplicable tocurrently-established testflowrates. Inessence,thenewdischarge pressurelimitsfallontheassumedperformance degradation curvesthathavebeenestablished fortheRHRandSIpumps.Apumpcanbejudged.acceptable based,uponpressureverification atonepointonthiscurveduringthesurveillance test.Inthiscase,thetestpointissimplybeingreadjusted furtheroutonthedegradedperformance curve.Hydraulic analyseshavebeenperformed confirming thatdischarge pressurevaluesatorabovetheproposed, limitswillmeettherequirements forsystemdeliveryunderaccidentconditions asestablished byFigures15.6-12and15.6-13intheUFSAR.TheseanalysesutilizedtheKYPIPEcomputercodedeveloped byNUSCorporation fortheemergency corecoolingsystemforR.E.Ginna.Thiscodehasbeenvalidated. inaccordance withtheapprovedQualityAssurance Program.TheresultsoftheanalysesrelatingsystemdeliveryversusRCSpressureareshownplottedontheattachedFigures1and2.Thecurvesshowthatrequiredsystemdeliveryisachievedassumingthe5%degradedRHRpumpperformance curve(Figure1)andthe3%degradedSIpumpperformance curve(Figure2).Thecurvesdepictedrepresent themostconservative casesintermsofparameters utilizedwhichlimittheflowdelivered totheRCS.Table1depictsthespecificTechnical Specification changes.Inaccordance with10CFR50.91, thesechangestotheTechnical Specifications havebeenevaluated todetermine iftheoperation ofthefacilityinaccordance withtheproposedamendment would:B-2 1.involveasignificant increaseintheprobability orconsequences ofanaccidentpreviously evaluated; or2.createthepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously evaluated; or3.involveasignificant reduction in.amarginofsafety.Theproposedchangestothesurveillance testsdonotinvolveasignificant changeintheprobability ofanaccidentpreviously evaluated becausetheproposedchangesarebeingmadetoimproveoperability ofthecomponents byreducingthepotential foraccelerated wearduetolowflowoperation duringsurveillance testing.Theproposed. changesdonotinvolveasignificant changeintheconsequences ofaccidents previously analyzedbecausethe=flowdelivered totheRCSasaresultoftheincreaseinrecirculation flowwillremainabovetherequired. flowdeliverycurvewhichisutilizedintheaccidentanalysis. Theproposedchangestothesurveillance testsdonotcreatethepossibility ofanewordifferent kindofaccidentfromanypreviously evaluated becausetheproposedchangesaffectonlythesurveillance testrequirement oftheexistingresidualheatremovalandsafety'injection pumps.Thebasisuponwhichthepumpsarejudgedacceptable isnotchanged,thatis,baseduponnotexceeding themaximumalloweddegradation ofthepumphead-capacitycurvethathasbeendemonstrated tomeettherequireddeliverycurves,Figures15.6-12and15.6-13oftheUFSAR.Theproposedchangestothesurveillance testsdonotinvolveasignificant reduction inthemarginofsafetybecausetheincreased recirculation testflowratewill,infact,increasesafetymarginsbyreducingthepotential foraccelerated wearduetooperation atlowflows.Surveillance testingforthesafetyinjection pumpsencompasses thevastmajorityoftheirexpectedyearlyoperating timeandtherefore theincreaseinthetestflowratefrom12-oto35%ofbestefficiency pointofflowwillbeequivalent totheminimumflowrecommended bythepumpmanufacturer forcontinuous pumpoperation. Theresidualheatremovalpumpsoperateduringplantcooldowns andrefueling operations atflowrates wellbeyondthesurveillance testflowrate. Theyearlyoperating timeforthesepumpswhilespentinthesurveillance testmodeissmallcomparedtothetotalexpectedoperating time,intheorderof5%.Nevertheless, increasing thetestflowratefrom11%to25%ofbestefficiency pointofflowwillhaveapositivelongtermeffect.ThebasisforGinnaTechnical Specifications relatedtoSXandRHRsurveillance testingflowrates anddischarge pressureistheassumedminimumpumpdeliverycharacteristics usedintheUFSARChapter15accidentanalyses. Becauseallsuchassumptions remainunchanged asaresultofthisproposedlicenseamendment, theoverallmarginofsafetyisnotreduced,anditdoesnotinvolveanunreviewed, safetyquestion. B-3 Therefore, Rochester GasandElectricsubmitsthattheissuesassociated withthisAmendment requestareoutsidethecriteriaof10CFR50.91 andanosignificant hazardsfindingiswarranted. B-4 ~I~t~~~fII'II~~~~~~~~~~~~~I0III~~~~I'l'I:II ==-SAFETYlNJECTlON FLOWCVC4UMPDEGRADEDOXD~'CI41~i~lAUJCL.J~REQUIREDEPZgo+x~0xvaw~~lJI-QOgIO~M~Xo>nXCYCDI~ZZZ4JCLUMPDEGRADED~~SIFlOW-GPMx100~~1.REQUIREDFlOWBASEDONUFSARFIGURE15.6-122.BASEDON:~SISPUMPPERFORMANCE DEGRADED.~SIPUMPSUCTIONHEAD=15%RWSTLEVEl~PUMPCINJECTING INTOLOOPgCOLDLEG.~~~}}