ML17328A871: Difference between revisions
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
||
| Line 18: | Line 18: | ||
=Text= | =Text= | ||
{{#Wiki_filter: | {{#Wiki_filter:ATTACHMENT 1EGG-SD-7799 TECHNICAL EVALUATION REPORTONTHESECOND10-YEARINTERVALINSERVICE INSPECTION PROGRAMPLAN:INDIANAANDMICHIGANELECTRICCOMPANY,DONALDC.COOKNUCLEARPLANT,UNIT1,DOCKETNUMBER50-315B.W.BrownJ.D.MudlinPublished July1988IdahoNationalEngineering Laboratory EG&GIdaho,Inc.IdahoFalls,Idaho83415Preparedfor:U.S.NuclearRegulatory Commission Washington, D.C.20555underDOEContractNo.DE-AC07-76ID01570 gFINNo.06022(Project5)9102010172 910124PDRADOCK05000315PPDR ABSTRACTThisreportpresentstheresultsoftheevaluation oftheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection (ISI),ProgramPlan,Change1,datedDecember1985,including therequestsforrelieffromtheAmericanSocietyofMechanical Engineers (ASHE)BoilerandPressureVesselCodeSectionXIrequirements whichtheLicenseehas'determined tobeimpractical. | ||
I1I CONTENTSABSTRACT~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~o1iSUHMARY.................................................................i> | TheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlanisevaluated inSection2ofthisreport.TheISIProgramPlanisevaluated for(a)compliance withtheappropriate edition/addenda ofSectionXI,(b)acceptability ofexamination sample,(c)exclusion | ||
Fa 2. | : criteria, and(d)compliance withISI-related commitments identified duringtheNuclearRegulatory Commission's (NRC)previouspreservice inspection (PSI)andISIreviews.The.requestsfor-relieffromtheASHECoderequirements whichtheLicenseehasdetermined tobeimpractical forthesecond10-yearinspection intervalareevaluated inSection3ofthisreport.Thisworkwas,funded under:U.S,NuclearRegulatory Commission FINNo.D6022,Project5Operating ReactorLicensing IssuesProgram,ReviewofISIforASHECodeClass1,2,and3Components 11 SUHHARYTheLicensee, IndianaandHichiganElectricCompany,haspreparedtheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection (ISI)ProgramPlanto.meettherequirements ofthe1983Edition,Summer1983Addenda(83S83)oftheASHECodeSectionXIexceptthattheextentofexamination forCodeClass1andCodeClass2pipingweldshasbeendetermined bythe1974EditionthroughSummer1975Addenda(74S75)aspermitted andrequiredby10CFR50.55a(b). | ||
1,('f 2.2. | Thesecond10-yearintervalbeganJuly1,1986andendsJune30,1996.Theinformation intheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlan,Change1,datedDecember1985,wasreviewed, including therequestsforrelieffromtheASHECodeSectionXIrequirements whichtheLicenseehasdetermined tobeimpractical. | ||
Asaresultofthisreview,aRequestforAdditional Information (RAI)wasprepareddescribing theinformation and/orclarification requiredfromtheLicenseeinordertocompletethereview.BasedonthereviewoftheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlan,theLicensee's responsetotheNRC'sRAI,andtherecommendations forthegrantingofrelieffromtheISIexamination requirements thathavebeendetermined tobeimpractical, ithasbeenconcluded thattheDonaldC.CookNuclearPlant,Unit1,Second10-Year'ntervalISIProgramPlan,Change1,datedDecember1985,isacceptable andincompliance with10CFR50.55a(g)(4). | |||
I1I CONTENTSABSTRACT~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~o1iSUHMARY........................................... | |||
......................i>i INTRODUCTION...........................................................1 12.EVALUATION OFINSERVICE INSPECTION PROGRANPLAN........................3 2.1Documents Evaluated..................................;..............3 2.2Compliance withCodeRequirements............... | |||
..........:......3 2.2.1Compliance withApplicable CodeEditions........................3 2.2.2Acceptability oftheExamination Sample..............:..........4 2P'2.3Exclusion Crsteria..............................................4 2.2.4Augmented Examination Commitments.......;... | |||
...................4 2.3Conclusions.........................................................4 03.EVALUATION OFRELIEFREQUESTS.......................................5 3.1Class1Components. | |||
..............................................5 3.1.1ReactorPressureVessel(Noreliefrequests) 3.1.2Pressurizer (Noreliefrequests) 3.1.3HeatExchangers andSteamGenerators (Noreliefrequests) 3.1.4PipingPressureBoundary(Noreliefrequests) 3.1.5PumpPressureBoundary................... | |||
..................5 3.1.5.1RequestforRelief1,Examination Categories B-L-1,B-.L-2,andB-G-1,ReactorCoolantPumpCasingWeld,PumpCasingInternalSurface,andPumpFlangeSurface..... | |||
~..53.1.6ValvePressureBoundary(Noreliefrequests) 3,1.7General(Noreliefrequests) 3.2Class2Components................................................. | |||
~93.2.1PressureVessels(Noreliefrequests) 3A.i.2P>p>ng....................................... | |||
.9~~~~~~~~~~~~~~~93.2.2.1RequestforRelief2,Examination CategoryC-ItemC5.21,Class2Pipe-to-Flued HeadWelds.iv I'IIthA3 3.2.2.2RequestforRelief3,Examination CategoryC-F,ItemC5.21,Class2Pipe-to-Flued HeadWelds...............10 3.2.3'umps (Noreliefrequests) 3.2.4Valves(Noreliefrequests) 3.2.5General(Noreliefrequests) 3.3Class3Components (Noreliefrequests) | |||
.4PressureTests..................................................... | |||
1233.4.1Class1SystemPressureTests..................................12 3.4.1.1RequestforReliefP2(Part1of2),System.Hydrostatic TestofClass1PipingintheChemicalandVolumeControlSystem..................................12 3.4.1.2RequestforReliefP4,SystemHydrostatic TestofClass1PipingintheEmergency CoreCoolingSystem........ | |||
133.4.2Class2SystemPressureTests..................-............. | |||
..143.4.2.1RequestforReliefPl,SystemHydrostatic TestofClass2PipingintheEmergency CoreCoolingSystem........ | |||
143.4.2.2RequestforReliefP2(Part2of2),SystemHydrostatic Test.ofClass2PipingintheChemicalandVolumeControlSystem........................... | |||
3.4.2.3RequestforReliefP3,SystemHydrostatic TestofClass2PipingintheChemicalandVolumeControl~~~~16ystem..................................................... | |||
16S3.4:2.4RequestforReliefP5,SystemHydrostatic TestofClass2PipingintheAuxiliary SpraytoReactorCoolantSystemandPressurizer, andChemicalandVolumeControlSystem.......... | |||
3.4.3Class3SystemPressureTests(Noreliefrequests) 3.4.4General..... | |||
~~~~~~~~~~~~~~~~18.203.4.4.1RequestforReliefP2,SystemHydrostatic TestofClass1and2Pipingin,theChemicalandVolumeControlSystem,;......... | |||
..............................20 3.5General(Noreliefrequests) | |||
~CONCLUSIONo~~'t~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~2345oREFRENCcSo~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ii~~~i24I E'III<~1 TECHNICAL EVALUATION REPORTONTHE'SECOND10-YEARINTERVALINSERVICE INSPECTION PROGRAHPLAN:INDIANAANDHICHIGANELECTRICCOHPANY,DONALDC.COOKNUCLEARPLANT,UNIT1,DOCKETNUHBER50-3151.INTRODUCTION Throughout theservicelifeofawater-cooled nuclearpowerfacility, 10CFR50.55a(g)(4) | |||
(Reference 1)requiresthatcomponents (including supports) whichareclassified asAmericanSocietyofHechanical Engineers | |||
,(ASHE)BoilerandPressureVesselCodeClass1,Class2,andClass3meettherequirements, exceptthedesignandaccessprovisions andthepreservice examination requirements, setforthintheASHECodeSectionXI,"RulesforInservice Inspection ofNuclearPowerPlantComponents," | |||
(Reference 2)totheextentpractical withinthelimitations ofdesign,geometry, andmaterials ofconstruction ofthecomponents. | |||
Thissectionoftheregulations alsorequiresthatinservice examinations ofcomponents andsystempressuretestsconducted duringthesecond120-month inspection intervalshallcomplywiththerequirements inthelatesteditionandaddendaoftheCodeincorporated byreference in10CFR50.55a(b) onthedate12monthspriortothestartofthesecond120-month inspection | |||
: interval, subjecttothelimitations andmodifications listedtherein.Thecomponents (including supports) maymeet.requirements setforthinsubsequent editionsandaddendaofthisCodewhichareincorporated'y reference in10CFR50,55a(b) subjecttothelimitations andmodifications listedtherein.TheLicensee, IndianaandHichiganElectricCompany,haspreparedtheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection (ISI)ProgramPlan,Change1(Reference 3),tomeettherequirements ofthe1983Edition,Summer1983Addenda(83S83)oftheASHECodeSectionXIexceptthattheextentofexamination forCode,Class1andCodeClass2pipingweldshasbeendetermined bythe1974EditionthroughSummer1975Addenda(74S75)aspermitted andrequiredby10CFR50.55a(b). | |||
Thesecond10-yearintervalbeganJuly1,1986andendsJune30,1996.Asrequiredby10CFR50.55a(g)(5), | |||
ifthelicenseedetermines thatcertainCodeexamination requirements areimpractical andrequestsrelieffromthem, thelicenseeshallsubmitinformation andjustifications totheNuclearRegulatory Commission (NRC)tosupportthatdetermination. | |||
Pursuantto10CFR50.55a(g)(6), | |||
theNRCwillevaluatethelicensee's determinations under10CFR50.55a(g)(5) thatCoderequirements areimpractical. | |||
TheNRCmaygrantreliefandmayimposealternative requirements thataredetermined tobeauthorized bylaw,willnotendangerlifeorpropertyorthecommondefenseandsecurity, andare.otherwise inthepublicinterest, jivingdueconsideration totheburdenuponthelicenseethatcouldresultiftherequirements wereimposedonthefacility. | |||
/Theinformation intheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlan,throughChange1,datedDecember1985,wasreviewed, including therequestsforrelieffrom'theASMECodeSectionXIrequirements whichtheLicenseehasdetermined tobeimpractical. | |||
ThereviewoftheISIProgramPlanwasperformed usingtheStandardReviewPlansofNUREG-0800 (Reference 4),Section5.2.4,"ReactorCoolantBoundaryInservice Inspections andTesting", | |||
andSection6.6,"Inservice Inspection ofClass2and3Components." | |||
InaletterdatedFebruary2,1987(Reference 5),theNRCrequested additional information thatwasrequiredinordertocompletetherevie'woftheISIProgramPlan:Therequested information wasprovidedbytheLicenseeinsubmittals datedApril10,1987(Reference 6)andJune1,1987(Reference 7).TheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlanisevaluated inSection2ofthisreport.TheISIProgramPlanisevaluated for(a)compliance withtheappropriate edition/addenda ofSectionXI,(b)acceptability ofexamination sample,(c)exclusion | |||
: criteria, and(d)compliance withISI-related commitments identified duringtheNRC'spreviouspreservice inspection (PSI)andISIreviews.Therequestsforreliefareevaluated inSection3ofthisreport.Unlessotherwise stated,references totheCoderefertotheASMECode,SectionXI,1983Editionincluding AddendathroughSummer1983.Specificinservice test(IST)programsforpumpsandvalvesarebeingevaluated inotherreports. | |||
Fa 2.EVALUATION OFINSERVICE INSPECTION PROGRAMPLANThisevaluation consisted ofareviewoftheapplicable programdocuments todetermine whetherornottheyareincompliance with,theCoderequirements andanylicenseconditions pertinent toISIactivities. | |||
Thissectiondescribes thesubmittals reviewedandtheresultsofthereview.2.1Docume'nt valuatedReviewhasbeencompleted onthefol',owing information providedbytheLicensee: | |||
(a)DonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlan,throughChange1,datedDecember1985;(b)Letter,datedApril10,1987,Licensee's responsetotheNRC'sRAI;and(c)Letter,datedJune1,1987,information theLicenseecommitted tointheApril10,-1987letter.2.2ComliancewithCodeReuirements 2.2.1ComliancewithAlicableCodeditionsTheInservice Inspection ProgramPlanshallbebasedontheCodeeditionsdefinedin10CFR50.55a(g)(4) and10CFR50.55a(b). | |||
BasedonthestartingdateofJuly1,-1986,theCodeapplicable tothesecondintervalISIprogramisthe1980EditionwithAddendathroughWinter1981.AsstatedinSection1ofthisreport,theLicenseehaswrittentheDonaldC.CookNuclearP'.ant,Unit1,Second10-YearIntervalISIProgramPlan,throughChange1,tomeettherequirements ofthe1983Edition', | |||
Summer1983AddendaotheCodeexceptthattheextentofexamination forCodeClassIandCodeClass2pipingweldshasbeendetermined bythe1974EditionthroughSummer1975Addendaaspermitted andrequiredby10C.'R50.55a(b). | |||
Theuseof83SS3wasapprovedbytheNRCinaletterdatedJanuarv15,1986(Reference 8). | |||
1,('f 2.2.2AccetabilitoftheExamination SamleInservice volumetric, surface,andvisualexaminations shallbeperformed onASMECodeClass1,2,and3components andtheirsupportsusingsamplingschedules described inSectionXIoftheASNECodeand10CFR50.55a(b). | |||
Samplesizeandweldselection havebeenimplemented inaccordance withtheCodeandappeartobecorrect.2.2.3xclusionCriteriaThecriteriausedtoexcludecomponents fromexamination shallbeconsistent withParagraphs IWB-1220, IMC-1220, IWC-1230, IWD-1220, and10CFR50.55a(b). | |||
Theexclusion criteriahavebeenappliedbytheLicenseeinaccordance withtheCodeasdiscussed intheISIProgramPlanandappeartobecorrect.2.2.4Augmented Examination Commitments Thefollowing augmented examinations willbeimplemented duringthesecond10-yearinspection interval: | |||
(a)TheLicenseehascommitted tovolumetrically examinea7.5i'ample ofweldsintheContainment SpraySystem.(b)Examinations fortheReactorPressureVesselareincompliance withRegulatory Guide1.150,"Ultrasonic TestingofReactorVesselWeldsDuringPreservice andInservice Examination" (Reference 9).(c)Augmented examinations perRegulatory Guide1.14,"ReactorCoolantPumpFlywheelIntegrity" (Reference 10).2.3Conclusions Basedonthereviewofthedocuments listedabove,itisconcluded thattheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlan,throughChange1,datedDecember1985,isacceptable andincompliance with10CFR50.55a(g)(4). | |||
10~0(yg\ | 10~0(yg\ | ||
'. | '.EVALUATION OFRELIEFREQUESTSTherequestsforrelieffromtheASMECoderequirements whichtheLicenseehasdetermined tobeimpractical forthesecond10-yearinspection intervalareevaluated inthefollowing sections. | ||
Licensee' | 3.1lassComonent3.1.1ReactorPressureVessel(Noreliefrequests) 3.l.2~i(II1ift.)3.1.3HeatExchanersandSteamGenerators (Noreliefrequests) 3.1.4PiinPressur'e Boundar(Noreliefrequests) 3.1;5PumPressureBoundar3.1.5.1RevestforReliefIExamination Catepries8--I8-L-2andB-G-IReactorCoolantPumCasinoMeldPumCasinoInternalSurface'ndPumFlaneSurfaceCodeReuirement: | ||
l4 J'valuation:TheLicensee' | SectionXI,TableIWB-2500-1, Examination CategoryB-L-I,Item812.10requiresa100%volumetric examination ofthepressureretaining pumpcasingweldsasdefinedbyFigureIWB-2500-16. | ||
SectionXI,TableIWB-2500-1, Examination CategoryB-L-2,Item812.20requiresa100%visual(VT-3)examination oftheinternalsurfacesofClass1pumpcasings.SectionXI,TableIWB-2500-.', | |||
Examination CategoryB-G-1,Item86.190requiresa100%visual(VT-1)examination oftheflangesurfacesofClass1pumpswhenconnection isdisassembled. | |||
Examination includes.1',nchannularsurfaceofflangesurrounding eachstud. | |||
Licensee's CodeReliefRevest:Reliefisrequested fromperforming theCode-required volumetric examination ofpumpcasingweld1-RCPandfromperforming theCode-required visualexaminations oftheinternalsurfacesofthepumpcasingsandthesurfacesofthepumpflanges.iensee'sProo'sedAlternative xamination: | |||
TheLicenseestatesthat,'nlieuofthe'requirements ofSectionXIforcategories B-L-1andB-L-2,avisualexamination (VT-2)willbeperformed on.theexternalsurfacesofonepumpduringthehydrostatic pressuretests.Inaddition, asurfaceexamination willbeperformed onthispumpontheaccessible externalsurfaceoftheweld.Ifapumphastobedisassembled formaintenance, visualexaminations willbemadeoftheinternalsurfaces(VT-3)andtheflangesurface(VT-1)tosatisfytheB-L-2andB-G-1Coderequirements. | |||
TheLicenseestatesthattheneedforthevolumetric examination according totheB-L-1requirement willbereevaluated atthattime.Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesubstantial radiation exposurethatinspection personnel willincurandthesubstantial costsinvolveddonotjustifythepossibleinformation thatmightbegainedabouttheweldandadjacentbasemetal.ThepumpcasingismadefromASNESA-351,GradeCF-SH,acastaustenitic stainless steelthathasalonghistoryofsatisfactory serviceinhandlingfluids.Thecasingwasmadeintwosectionstofacilitate thecastingprocess,andthetwosectionsareweldedtogetherwithamatchingfillermaterial. | |||
Thematerialhasgoodfracturetoughness, andunlikeferriticsteels,isnotsubjecttofractureprevention criteria. | |||
Volumetric andinternalcasingvisualexamination willrequirecompletedisassembly ofthepump.Disassembly ofthepump,s.orageoftheinternals, andplacement offilmforthemany IhI radiographic exposures thatwillberequired, willexposepersonnel tosubstantial radiation. | |||
Fromexperience atothernuclearplantsexamining reactorcoolantpumps,personnel exposurecouldbeintherangebetween35to100man-rem.Flushingorshielding wouldnotbeexpectedtosignificantly reduceradiation levels.Basedoncostsincurredbyothernuclearplants,thispumpexamination isestimated tocostabout$500,000,whichdoesnotincludecostsassociated withunitunavailability shouldth'isexamination requireextending anoutage.TheCode-required examination willrequiredisassembly ofapumpunderadverseconditions wherethereisapossibility ofcausingdamagetothepumpinternals. | |||
Thereisnootherreasontodisassemble anyofthesepumpsotherthantoperformtheseexaminations. | |||
Thisexamination willalsorequirehandlingthereactorvesselupperinternalassemblyanadditional time,astheupperinternals willhavetobeputbackintothereactorvesseltominimizeairborneradiation duringthepumpexamination. | |||
Basedontheforegoing, andthefactthatCodereliefwasgrantedfortheD.C.Cookreactorcoolantpumpsforthefirstinterval, aswassimilarly grantedforreactorcoolantpumpsinothernuclearplants,theLicenseebelievesthattheradiation exposureandcostsforthisexamination donotjustifyperforming thevolumetric andvisualexaminations tomeettherequirements ofCategories B-L-l,B-L-2,andB-G-I.Evaluation: | |||
Thevisualexamination istodetermine whetherunanticipated severedegradation ofthecasingisoccurring duetophenomena suchaserosion,corrosion, orcracking. | |||
However,previousexperience duringexamination ofpumpsatotherplantshasnotshownanysignificant degradation ofpumpcasings.Theconceptofvisualexamination ifthepumpisdisassembled formaintenance isacceptable. | |||
Ifthepumpisdisassembled for maintenance, theCode-required volumetric examination ofthepumpcasingweldshouldalsobeperformed. | |||
Thedisassembly ofthepumpssolelyforthepurposeofinspection isamajoreffortand,inadditiontothepossibility ofadditional wear.'rdamagetotheinternalsurfacesofthepumps,couldresultinlargeamountsofradiation exposuretopersonnel. | |||
However,ifoneofthepumpsisdisassembled formaintenance, thecasingweld,internalsurfaces, andflangesurfacewouldbeexamined, inwhichcasereliefwouldnotberequiredfor'thatparticular pump.Conclusions: | |||
Basedontheaboveevaluation, itisconcluded thatcompliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended that:(a)TheLicensee's proposaltoperformthevisualexamination oftheinternalsurfaces(VT-3)andtheflangesurface(VT-I)ofthepumps,whenevertheyaremadeaccessible duetodisassembly formaintenance, shouldbeaccepted, providedthattheCode-r'equired volumetric examination ofthepumpcasingweldisalsoperformed; and(b)Reliefshouldbegrantedattheendoftheintervalifoneofthesubjectpumps,forwhichthevisualandvolumetric examinations arerequired, hasnotbeendisassembled formaintenance. | |||
3.1.6:ValvePressureBoundar(Noreliefrequests) 3.1.7General(Noreliefrequests) 3.2Class2Comonents3.2.1PressureVessels(Noreliefrequests) 3.2.2~Piin3.2.2.1euestforRelief2Examination CateorC-FternC5.lassPie-to-Flued HeadWeldsCodeReuirement: | |||
SectionXI,TableIWC-2500-1, Examinat)on CategoryC-F,ItemC5.21requiresa100%%usurfaceandvolumetric examination ofthepressureretaining circumferential weldsinClass2piping,greaterthanI/2inchnominalwallthickness, asdefinedbyFigureIWC-2500-7. | |||
icensee's CodeReliefReuest:Reliefisrequested fromperforming theCode-required surfaceandvolumetric examination ofpipe-to-flued headweld01SintheFeedwater SystemandLfluedhead-to-pipe weld12FintheMainSteamSystem.Licensee's ProosedAlternative xamination: | |||
TheLicenseestatesthat,inlieuoftherequirements ofSectionXI,thefirstaccessible weldoutsideeachpenetration willbeexaminedwiththeCode-required surfaceandvolumetric examinations. | |||
Thisproposedalternative examination wasusedinthefirst10-yearinterval. | |||
Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesubjectweldsaretotallyenclosedwithinapenetration sleeve,andareinaccessible forexamination. | |||
Sincetheinaccessible pipe-to-flued headweldthickness issubstantially heavierthanthe.proposedalternative weldtobeexaminedandtheyareexposedtothesameenvironment, theoveralllevelofplantsafetywillnotbereducedbyperforming thealternative examination. | |||
l4 J'valuation: | |||
TheLicensee's submittal hasbeenreviewed, including thedrawingwhichshowstheexa'mination obstructions. | |||
TheCode-required surfaceandvolumetric examinations ofthesubjectweldsareimpractical toperformbecausetheseweldsarelocatedinsidecontainment penetrations andarecompletely inaccessible. | |||
Becausethefirstaccessible weldoutsideeachpenetration willreceivetheCode-required surfaceandvolumetric examinations, samplesizeismaintained. | |||
Thesubjectweldscanonlybeexaminedbyinspecting forevidenceofleakageduringsystemhydrostatic tests.Althoughthesecontainment penetration weldscannotbevieweddirectly, theLicenseeshouldconductvisualexaminations forevidenceofleakageinthevicinityoftheseweldswhenthehydrostatic pressuretestsareperformed. | |||
Bd'hb1i,<<ilddthattheCode-required surfaceandvolumetric examinations ofthesubjectweldsareimpractical toperformandthattheproposedalternative examination ensuresanacceptable levelofinservice structural integrity. | |||
Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested providedthatvisualexaminations areperformed onthetwocontainment penetration assemblies when'eakageandhydrostatic testsareconducted inaccordance withIWA-5000. | |||
3.2.2.2ReuestforRelief3Examination CateorC-FItemC5.21lassPie-to-Flued HeadWeldsCodeReuirement; SectionXI,TableIWC-2500-1, Examination CategoryC-F,ItemC5.21requiresa100/surfaceandvolumetric examination ofthepressureretaining circumferentia'. | |||
weldsinClass2piping,greaterthanI/2inchnominalwallthickness, asdefinedbyFigureIWC-2500-7. | |||
10 icensee's CodeReliefRevest:Reliefisrequested fromperforming theCode-required surfaceandvolumetric examinations ofpipe-to-flued headweldIOFintheMainSteamSystem.icensee's ProosedAlternative xamination: | |||
TheLicenseestatesthat,inlieuoftherequirements ofSectionXI,oneadjacentweldinonemainsteamline.willbeexaminedwiththeCode-required surfaceandvolumetric examinations. | |||
Thisproposedalternative examination wasusedinthefirst10-yearinterval. | |||
Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesubjectweldisinaccessible duetothelargepipewhiprestraint whichsurrounds theweld.andadjacentarea.Volumetric examination byultrasonics isimpractical becausetheweldcannotbereach'edforpositioning andhandlingthetransducer, andradiography isimpractical becausetheexposurewouldhavetobemadethroughtherestraint. | |||
Surfaceexamination isimpractical becausetheweldisnotreadilyaccessible forapplication andremovalofpenetrant ormanipulation ofmagneticparticleequipment. | |||
Removalofthepipewhiprestraints wouldrequiretorchcutting2400and2700-lbsectionsthataresupported fromabove.Theserviceconditions towhichanadjacentweldisexposedshouldbenearlyidentical tothatoftheinaccessible weld,ardthustheoveralllevelofplantsafetywillnotbereducedbyperforming theproposedalternative examination. | |||
Evaluation: | |||
TheLicensee's submittal hasbeenreviewed, including thedrawingwhichshowstheexamination obstructions. | |||
TheCode-required surfaceandvolumetric examinations ofthesubjectweldareimpractical becausethisweld(andadjacentarea)issurrounded byalargewhiprestraint andiscompletely inaccessible. | |||
BecauseanadjacentweldwillreceivetheCode-required surfaceandvolumetric | |||
examinations,samplesizeismaintained. | examinations, samplesizeismaintained. | ||
3.4.1;2RvestforReliefP4SstemHdrstaticTestofClas1iinintheEmerencCoreCoolinSstemCodeReuirement:SectionXI,ArticleIWB-5000requiresthat, | Thesubjectweldcanbeexaminedonlybyinspecting forevidenceofleakageduringsystemhydrostatic tests.Althoughthiscontainment penetration weldcannotbevieweddirectly,. | ||
/valuation:Becausethesystem' | theLicenseecouldconductvisualexaminations forevidenceofleakageinthevicinityofthisweldwhenthehydrostatic pressuretestsareperformed. | ||
\I~i Becauseofthis, | d1<<:Bddd1d,dd iddthattheCode-required surfaceandvolumetric examinations ofthesubjectweldareimpractical andthattheproposedalternative examination ensuresanacceptable levelofinservice structural integrity. | ||
Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested providedthatvisualexaminations forevidenceofleakageareperformed inthevicinityofthecoveredweldwhentheCode-required leakageandhydrostatic testsareconducted. | |||
3.2.3~Pums(Noreliefrequests) 3.2.4Valves(Nureliefrequests) | |||
'.2d5General(Noreliefrequests) 3.3Class3Comonents(Noreliefrequests) 3.4PressureTests3.4.1Class1SstemPressure. | |||
Tests3.4.1.1RevestforReliefP2Partof2SystemHdrostatic TestofClass]PiinaintheChemicalandVolumeControlSstemNOTE;Seetheevaluation ofthisrequestforreliefinSection3,4.4.1.12 I | |||
3.4.1;2RvestforReliefP4SstemHdrstaticTestofClas1iinintheEmerencCoreCoolinSstemCodeReuirement: | |||
SectionXI,ArticleIWB-5000requiresthat,foranoperating pressureof2235psig,theClass1pipingbetestedatapressureof2458psig.icensee's CodeReliefReuest:Reliefisrequested fromperforming theCode-required hydrostatic testofthefollowing Class1pipingsectionsintheEmergency CoreCoolingSystemattherequiredtestpressureof2458psig:ValvesIH0-51,SI-142LI-BoronInjection LoopNo.1ValvesIH0-52,SI-142L2-BoronInjection LoopNo.2ValvesIH0-53,SI-142L3-BoronInjection LoopNo.3ValvesIH0-54,SI-142L4-BoronInjection LoopNo.4icensee's ProosedAlternative Examination: | |||
TheLicenseestatesthatthesubjectsectionsofpipingwillbetestedatapressureof2280psig.Thetestwillbeperformed duringHode3withtheRCSpressureat2280psigandtemperature greaterthanorequalto500'F.TheRCSpressurewillbeusedtoblockcheckvalvesSI-142L1throughL4closed;therefore, maximumpressurewillbe2280psig.Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesectionsofthepipingsystemupstreamofcheckvalvesSI-142L1-through L4cannotbetestedatapressureof2458psigwithoutmakingtemporary modifications (blocking thevalvedisc)tokeepthecheckvalvesclosed.Sincethepipingsectionsarepartoftheprimarysystem,plantpersonnel willbesubjected tosubstantial radiation exposureandcontamination inordertocarryoutsuchmodifications forthetest..Theproposedtestpressureishigherthanthe2235psignominaloperating pressureinthesubjectsectionsofpiping,eachapproximately 44to55feetlong.13 | |||
/valuation: | |||
Becausethesystem'sdesigndoesnotpermitpressurizing thesectionsofpipingtotheCode-required pressurewithoutextensive temporary valvemodifications, the..Codetestpressurerequirement isimpractical. | |||
Thevisualinspection ofthepipingduringthepressuretestaswellasthevolumetric examination requirements forselectedweldsinthesystemwillprovideadequateassurance ofthecontinued structural integrity ofthepiping.Thedifference intherequiredtestpressureandthatproposedbytheLicenseedoesnotwarrantimposition oftheCoderequirement. | |||
== | |||
Conclusions:== | |||
Basedontheaboveevaluation, itisconcluded thattheCoderequirements areimpractical andthatthealternative testproposedbytheLicensee, inconjunction withtheotherNDErequirements, willensureanacceptable levelofinservice structural integrity. | |||
Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthe'evelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested. | |||
3.4.2Class2SstemPressureTests3.4.2.1ReuestforReliefPSstemHdrostatic TestofClass2PiinointheEmerencCoreCoolinSstemCodeReuirement: | |||
SectionXI,ArticleIWC-5000requiresthat,forasystemdesignpressureof2485psig,theClass2pipingbetestedatapressureof2733psig.icensee's CodeReliefReuet:Reliefisrequested fromperforming theCode-required hydrostatic testofthefollowing Class2pipingsectionsintheEmergency CoreCoolingSystemattherequiredtestpressureof2733psig:(a)Accumulator No.1Discharge Piping-ValvesIH0-110,SI-166-1, IRV-115,andSI-168-1; 14 lg~,'UJq'l (b)Accumulator No.2Discharge Piping-ValvesIH0-120,SI-166-2, IRV-125,andSI-168-2; (c)Accumulator No.3Discharge Piping-ValvesIH0-130,SI-166-3, IRV-135,andSl-168-3; and(d)Accumulator No.4Discharge Piping-ValvesIH0-140,SI-166-4, IRV-145,andSI-168-4. | |||
icensee's ProosedAlternative Examination: | |||
TheLicenseestatesthatthesubjectsectionsofpipingwillbetestedatapressureof2280psig.Thetestwillbeperformed during.Mode3withtheRCSpressure. | |||
at2280psigandtemperature greaterthanorequalto500'F.TheRCSpressurewillbeusedtoblockthecheckvalves(SI-166-1, | |||
-2,-3,and-4)closed,therefore, limitingmaximumpressureto2280psig.Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesectionofpipingupstreamofcheckvalvesSI-166-1through4cannotbetestedatapressureof2733psigwithoutmakingextensive temporary modifications tokeepthevalvesclosed.Themodifications wouldrequire:(a)disas'sembly ofthevalves,(b)weldingoftemporary blocks(onthedownstream side)insidethevalvebodiestoholda"jackscrew"typearrangement tokeepthevalveclosed,(c)removalofthetemporary blockingdevicesfromthevalvesaftertesting,and(d)performing necessary nondestructive testingtoensuretheintegrity ofthevalvebodiesbeforereturning themtoservice.Thepipingdownstream ofthesevalvesispartoftheRHRSystemandcarriesradioactive fluidduringnormaloperation. | |||
Therefore, plantpersonnel willbesubjected tosubstantial radiation exposureandradioactive contamination inordertocarry.outany.modifications forthetest.Evaluation: | |||
Thesystem'sdesigndoesnotpermitpressurizing thesectionsofpipingtotheCode-required pressurewithouteitherextensive temporary valvemodifications oroverpressurizing theClass1sectionsofconnected piping.15 | |||
\I~i Becauseofthis,thetestpressurerequirement isimpractical toattain.Thesectionsofpipingwillbesubjected toa'ressure slightlyhigherthannormaloperating pressureandatatemperature higherthanthatrequired, bytheCode.Thevisualinspection ofthepipingduringthepressuretestaswellasthevolumetric examination requirements forselectedweldsinthesystemwill'provide adequateassurance ofthecontinued structural integrity ofthepiping.Conclusions: | |||
Basedontheaboveevaluation, itisconcluded thattheCoderequirements areimpractical andthatthealternative testproposedbytheLicensee, inconjunction withtheotherNDErequirements, willensureanacceptable levelofinservice structural integrity. | |||
Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested. | |||
3.4.2.2ReuestforReliefP2Part2of2SstemHdrostatic TestoFClass2PiinintheChemicaland'olume ControlSstemNOTE:Seetheevaluation ofthisrequestforreliefinSection3.4.4.1.3.4.2.3RevestforReliefP3SstmHdrostatic TestofClass2PiinintheChemicalandVolumControlSstemCodeReuirement: | |||
SectionXI,ArticleIMC-5000requiresthat,foradesignpressureof2485psig,theClass2pipingbehydrostatically pressuretestedatapressureof3106psig.Licensee's CodeReliefReuest:Reliefisrequested fromperforming theCode-required hydrostatic pressuretestofthe16 aLetdownLines(ValvesQRV-112,QRV-160,QRV-161,andQRV-162)intheChemicalandVolumeControlSystem(ReactorLetdownandCharging) attherequiredtestpressureof3106psig.icensee's ProosedAlternative xamination: | |||
TheLicenseestatesthatthesubjectsectionofpipingwillbetestedatapressureof2280psigduringNode3usingRCSpressure. | |||
ValvesQRV-illandQRV-112willbeopenedwithQRV-160;QRV-161,andQRV-162closed.Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesubjectsectionofpipingcannotbetestedatapressureof3106psigwithout(a)usingaspareone-inchpluggedconnection inUnit1pipinglocateddownstream ofinstrument QTA-160intheregenerative. | |||
heatexchanger room,whichisconsidered ahighradiation area,and(b)modification, sincenotestconnection existsinUnit2piping.Thispipingcarriesradioactive fluidduringnormaloperation; therefore, plantpersonnel willbesubjecttosubstantial radiation exposureandcontamination | |||
',nordertomodify/add atestconnection. | |||
Asanalternative, extending thetestboundarytoQCR-301wasconsidered. | |||
ThiswouldinvolveusingQPX-301locatedonthedownstream pipingoutsidethe.regenerative heatexchanger roomasatestconnection. | |||
Thisalternative wasalsorejectedbecausevalveQCR-301andtheflangeboltedtotheinletflangeofsafetyvalveSV-051areinthe600-lbclasswhichcannotwithstand theabovetestpressure. | |||
~valuatior: | |||
Thesystem'sdesigndidnotincludeatestconnection toallowpressurizing totheCodetestpressureorpipiengandvalvesratedappropriately toaccommodate therequiredpressureatotherisolation pointsinthesystem.InordertocomplywiththeCoderequirement, theLicenseewouldhavetoinstallatestconnection oroverpressurize lowerratedpipingandcomponents. | |||
Therefore, theCoderequirement is17 impractical. | |||
TheLicensee's proposedalternative testwillsubjectthepipingtoapressureslightlyhigherthannormaloperating pressure. | |||
Therequiredvisualinspection ofthepipingatthetestpressureandotherrequiredNDEoftheweldsinthesystemwillprovideadequateassurance ofthecontinued structural integrity ofthepiping.Conclusions: | |||
Basedontheaboveevaluation, itisconcluded thattheCoderequirements areimpractical andthatthealternative testproposedbytheLicensee, inconjunction withtheotherNOErequirements, willensureanacceptable levelofinservice structural integrity. | |||
Compliance withthespecific. | |||
requirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested. | |||
3.4.2.4RevestforReliefP5SystemHdrostatic TestofClass2PiinintheAuxiliarSratoReactorCoolantSstemandPressurizer andChemicalandVolumeControlSstemCodeReuirement: | |||
SectionXI,ArticleIMC-5000requiresthat,foradesignpressureof2735psig,theClass2pipingbetestedatapressureof3419psig.Licensee's CodeReliefRevest:Reliefisrequested fromperforming theCode-required hydrostatic pressuretestoftheClass2pipingsectionsdescribed bythefollowing pipingboundaries attherequiredtestpressureof3419psig:ValvesQRV-51CS-326ValvesQRY-61CS-322ValvesQRV-62.Licensee's ProosedAlternative Examination: | |||
TheLicenseestatesthatthesubjectsectionsofpipingwillbetestedatapressureof2800psigusinga"stemblock"tokeepvalveQRV-51closed. | |||
+"IlegE<. | +"IlegE<. | ||
icensee' | icensee's BasisforReuestinRelief:TheLicenseestatesthat,inordertoperformthepressuretestofthesesectionsofpiping,valveHARV-51hastobeusedasanisolation valve.This1500-lbclass,air-operated controlvalveisdesignedtowithstand testpressureof3419psigintheopenposition. | ||
However,itcannotbeusedasanisolation valvebecauseitwasdesignedforadifferential pressureof1200psig.Thevalvecannotbekeptclosedduringpressuretestingat3419psigwithoutextensive, temporary rigging.Themodification wouldrequire:(a)removaloftheairoperatorandinstallation ofa"strongback"tokeepthevalveclosedduringtesting,(b)removalofthe"strongback"afterthetesting,and(c)reinstallation oftheairoperatoronthevalveandrestoring thevalvetooperablecondition beforereturning toservice.Thevalveislocatedinsidetheregenerative heatexchanger room,whichisaveryhighradiation areaandplantpersonnel wouldbesubjected toradiation exposureoffivetosevenman-rems. | |||
Asanalternative, thepossibility ofusingafreezesealplugdownstream ofHARV-51wasconsidered. | |||
Thiswouldinvolveextensive workingtimeclosetothepressurizer sprayvalves,whichareinahighradiation area.Thisalternative was",ejectedbeauseplantpersonnel wouldbesubjecttoanevenhigherradiation eXposureof8.5man-remsduringformation, monitoring, andremovalofthefreezesealplug.Evaluation: | |||
TheabovepipingsystemcannotbetestedtoASHECoderequirements withoutmodifying thesystemand/orexposingpersonnel tolargeamountsofradiation. | |||
TheproposedtestCpressureishigherthanthenormaloperating pressureof2235psigintheapproximately 30-foot-long sectionofpipingforwhichCodereliefisrequested. | |||
Theproposedtes+pressureis25llabovethenormaloperating pressure. | |||
Thus,thetestprovidesreasonable assurance oftheintegrity ofthepiping.19 Clli:Bdthbii,<<<*1ddthattheCoderequirements areimpractical andthatthealternative testproposedbytheLicensee, inconjunction with.theotherNDErequirements, willensure*anacceptable levelofinservice structural integrity. | |||
Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityaridsafety.Therefore, itisrecommended thatreliefbegrantedasrequested. | |||
3.4.3Class3SstemPressureTests(Noreliefrequests) 3.4.4General3.4.4.1ReouestforReliefP2SstemMdrostatic TestoFClass1and2PiinintheChemicalandVolumeControlSstemCodeReuirement: | |||
SectionXI,ArticleIWB-5000requiresthat,foranoperating pressureof2235psig,theClass1pipingbetestedatapressureof2458psig.SectionXI,ArticleIWC-5000requiresthat,foradesignpressureof2735psig,theClass2pipingbetestedatapressureof3419psig.icensee's CodeReliefRevest:Reliefisrequested fromperforming theCode-required hydrostatic testofthefollowing Class1and2pipingsectionsintheChemicalandVolumeControlSystem(Reactor'Letdown andCharging) attheCode-required testpressures of2458and3419psig:(a)Class1piping:Two-inchAuxiliary SprayPiping-ValvesHARV-SlandCS-325;(b)Class2piping:NormalChargingLoop4ColdLeg-ValvesgRY-62,CS-328L4, CS-326,andCS-327;20 (c)Class2piping:Alternate ChargingLine'oLoop1ColdLeg-ValvesHARV-61andCS-328L1. | |||
icensee's ProosedAlternative Examination: | |||
TheLicenseestatesthatthesubjectsectionsofpipingwillbetestedatapressureof2280psigatatemperature above100'F.Thetestwillbeperformed duringMode3withtheReactorCoolantSystem(RCS)pressureat2280psigandtemperature greaterthanorequalto500'F.TheRCSpressurewillbeusedtoblockthecheckvalvesCS-329L1, CS-329L4, andCS-325closed;therefore, maximumpressurewillbe2280psig.Licensee's BasisforReuestinRelief:TheLicenseestatesthatcheckvalvesCS-328L1, CS-328L4, andCS-325arelocatedonthecharginglinesto'heRCSSystem.Thesevalvesmustbedisassembled andtemporarily modifiedtoblockthemclosedinordertoperformtherequiredhydrostatic tests,andplant"personnel willbeexposedtohighradiation andradioactive contamination duringthemodification. | |||
Theproposedtestpressureishigherthan2235psignominaloperating pressureinthesectionofpipingbetween23and115feetlongforwhich'elief isrequested. | |||
fvaluation: | |||
Thesystem'sdesigndoesnotpermitpressurizing thesectionsofpipingtotheCode-required pressurewithouteitherextensive temporary valvemodifications oroverpressurizing theClass1sectionsofconnected piping.Becauseofthis,theCode-required testpressureisimpractical toattain.Thesectionsofpipingwillbesubjected toapressureslightlyhigherthannormaloperating pressureandatatemperature higherthanthatrequiredbytheCode.Thevisual,i'nspection ofthepipingduringthepressuretest,aswellasthevolumetric examination requirements forselectedweldsinthesystems,willprovideadequateassurance ofthecontinued structural integrity ofthepiping.21 j | |||
== | == | ||
Conclusions:== | Conclusions:== | ||
Basedontheaboveevaluation, | |||
Ih) 5. | Basedontheaboveevaluation, itisconcluded thattheCoderequirements areimpractical andthatthealternative testproposedbytheLicensee, inconjunction withtheotherNDErequirements, willensureanacceptable levelof'inservice structural integrity. | ||
711Cf01M~I5Ski11CUIIGT,STOI, | Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested. | ||
3.5Genera1(Noreliefrequests) 22 gPIQ 4.CONCLUSION Pursuantto10CFR50.55a(g)(6), | |||
ithasbeendetermined thatcertainSectionXIrequiredinservice examinations areimpractical toperform.Inthesecases,theLicenseehasdemonstrated thateithertheproposedalternatives wouldprovideanacceptable levelofqualityandsafetyorthatcompliance withtherequirements wouldresultinhardships orunusual\difficulties withoutacompensating increaseinthelevelof.quality'.and safety.Thistechnical evaluation reporthasnotidentified anypractical method'bywhichtheexistingDonaldC.CookNuclearPlant,Unit1,canmeetallthespecificinservice inspection requirements ofSectionXIoftheASHECode.Requiring compliance withalltheexactSectionXIrequiredinspections wouldrequireredesignofasignificant numberofplantsystems,sufficient replacement components tobeobtained, installation ofthenewcomponents, andabaselineexamination ofthesecomponents. | |||
Evenaftertheredesignefforts,completecompliance withtheSectionXIexamination requirements probablycouldnotbeachieved. | |||
Therefore, itisconcluded thatthepublicinterestisnotservedbyimposinacertainprovisions ofSectionXIoftheASthECodethathavebeendetermined tobeimpractical. | |||
Pursuantto10CFR50.55a(g)(6), | |||
reliefisallowedfromtheserequiremerts whichareimpractical toimplement. | |||
Thedevelopment ofneworimprovedexamination techniques willcontiruetobemonitored. | |||
Asimprovements intheseareasareachieved, theNRCmayrequirethatthesetechniques beincorporated inthenextinspection intervalISIprogramplanexamination requirements. | |||
BasedonthereviewoftheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection ProgramPlan,Change1,datedDecember1985,theLicensee's responses totheNRC'sRequestforAdditional Information, andtherecommendations forgrantingrelieffromtheISIexamination requirements thathavebeendetermined tobeimpractical, ithasbeenconcluded thattheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection ProgramPlan,Change1,datedDecember1965,isacceptabl andincompliance with10CFR50.55a(g)(4). | |||
Ih) 5.REFERENCES 1.CodeofFederalRegulations, Volume10;Part50.2.AmericanSocietyofHechanical Engineers BoilerandPressureVesselCode,SectionXI,Division1:1983EditionthroughSummer1983Addenda1974EditionthroughSummer1975Addenda3.DonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection ProgramPlan,Change1,datedDecember1985.4.NUREG-0800, StandardReviewPlans,Section5.2.4,"ReactorCoolantBoundaryInservice Inspection andTesting," | |||
andSection6.6,"Inservice Inspection ofClass2and3Components," | |||
July1981.5.Letter,February2,1987,B.J.Youngblood (NRC)toJ.E.Dolan[IndianaandHichiganElectricCompany(IHEC)],"RequestforAdditional Information forReviewoftheDonaldC.CookNuclearPlant,Units1and2,Second10-YearIntervalInservice Inspection ProgramPlans,Change1,datedDecember1985."6.Letter,April10,1987,H.P.Alexich(IHEC)toH.R.Denton(NRC),"Response toRequestforAdditional Information ontheISISecond10-Year'nterval MeldProgramfortheDonaldC.CookNuclearPlant,Units1and2."7.Letter,June1,1987,M.P.Alexich(IHEC)toT.E.Hurley(NRC),"Response toRequestfor.Additional Information ontheISISecond10-YearIntervalWeldProgramfortheDonaldC.CookNuclearPlant,Units1and2."8.Letter,January15,1986,B.;J.Youngblood (NRC)toJ.E.Dolan(IHEC),"NRCApprovalforIndianaandHichiganElectricCompanytoUseASHECodeSectionXI,1983EditionwithSummer1983AddendafortheISI/ISTProgramfortheDonaldC.CookNuclearPlant,Units1and2."24 9..Regulatory Guide1.150,"Ultrasonic TestingofReactorVesselWeldsDuringPreservice andInservice Examinations," | |||
Revision1,datedFebruary1983.10.Regulatory Guide1.14,"ReactorCoolantPumpFlywheelIntegrity," | |||
Revision1,datedAugust'1975.25 1''E'trEf:%( | |||
711Cf01M~I5Ski11CUIIGT,STOI,STGTBIBUOGRAPHIC DATASHEETEGG-SD-7799 VLIIVCLEA11EOVLATOAV COMMISSIQM I15fOATIIVMSE1IAIVfkkfkfTIDCkkfVMflf,el~iSEEIMSTAUCTIQIISOM TIIE1EVE1555.TITLfAIIQ5VSTITLETechnical Evaluation ReportontheSecond10-YearIntervalInservice Inspection ProgramPlan:IndianaandHichiganElectricCo.,DonaldC.CookNuclearPlant,Unit1,DocketNumber50-3155LEAVE~LAIIILkDATE1EfOATCOMfLETED TEA1MOIeTM5AVT+01ISI July1988~D*TE15fo1TISSVEOB.W.Brown,J.D.HudlinTff1fQAMIMGOAGAIIIZATIOM MAMEAMDMAILIUGAOD155$llkfMffjMCkkrlEG&GIdaho,Inc.P.0.Box1625IdahoFalls,ID83415-2209 MOUTHJuly~,t1QIEGTITASA.'ITQAA vMITMMM4515fIII01G1AIITMVME51TEA1198810SfOIISOIIIIIG QAGAIIIZATIOII IIAV5AMOUAILIUGAQOIIESSllkf~ZMCkff1Haterials Engineering BranchOfficeofNuclearReactorRegulation U.S.NuclearRegulatory Commission Washington, D.C.20555ISSVffLEMEVTkflv MOTE5FIN-D6022 (Propre'ct 5)II~TvfEOf15>OATTechnical | |||
~.f5fIIQDCOVEfIEDIlkMVAM<<MM1$AESTAACTIowaorranThisreportpresentstheresultsoftheevaluation oftheDonaldC.CookNuclearPl,ant,Unit1,Second10-YearIntervalInservice Inspection (ISI)ProgramPlan,Change1,datedDecember1985,including therequestsforrelieffromtheAmericanSocietyofHechanical Engineers (ASHE)BoilerandPressureVesselCodeSect'ionXIrequirements whichtheLicenseehasdetermined tobeimpractical. | |||
InSection2ofthisreport,theISIProgramPlanisevaluated for(a)compliance withtheappropriate edition/addenda ofSectionXI,(b)acceptability oftheexamination sample,(c)exclusion | |||
: criteria, and(d)compliance withISI-related commitments identified duringtheNuclearRegulatory Commission's (NRC)previouspreservice inspection (PSI)andISIreviews.TherequestsforrelieffromtheASHE'Code requirements whichtheLicenseehasdetermined tobeimpractical forthefirst10-yearinspection intervalareevaluated inSection3ofthisreport.I~OQCLIMEMT AMALT515~KETIVQ"DSIGESCAPTO15 | |||
'lfkbki&SILsT> | |||
STATEMEIIT 1iOEMTlflfASloff~ | |||
f4QEOTEAMSUnlimited I~5ECVAITVCLASSIfICATIDM Un'ssifiedjfkvIwortiUnclassified 111VMSfkGIkkGESIffklCE I}} | |||
Revision as of 07:45, 29 June 2018
| ML17328A871 | |
| Person / Time | |
|---|---|
| Site: | Cook |
| Issue date: | 07/30/1988 |
| From: | BROWN B W, MUDLIN J D EG&G IDAHO, INC., IDAHO NATIONAL ENGINEERING & ENVIRONMENTAL LABORATORY |
| To: | NRC |
| Shared Package | |
| ML17328A869 | List: |
| References | |
| CON-FIN-D-6022 EGG-SD-7799, NUDOCS 9102010172 | |
| Download: ML17328A871 (49) | |
Text
ATTACHMENT 1EGG-SD-7799 TECHNICAL EVALUATION REPORTONTHESECOND10-YEARINTERVALINSERVICE INSPECTION PROGRAMPLAN:INDIANAANDMICHIGANELECTRICCOMPANY,DONALDC.COOKNUCLEARPLANT,UNIT1,DOCKETNUMBER50-315B.W.BrownJ.D.MudlinPublished July1988IdahoNationalEngineering Laboratory EG&GIdaho,Inc.IdahoFalls,Idaho83415Preparedfor:U.S.NuclearRegulatory Commission Washington, D.C.20555underDOEContractNo.DE-AC07-76ID01570 gFINNo.06022(Project5)9102010172 910124PDRADOCK05000315PPDR ABSTRACTThisreportpresentstheresultsoftheevaluation oftheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection (ISI),ProgramPlan,Change1,datedDecember1985,including therequestsforrelieffromtheAmericanSocietyofMechanical Engineers (ASHE)BoilerandPressureVesselCodeSectionXIrequirements whichtheLicenseehas'determined tobeimpractical.
TheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlanisevaluated inSection2ofthisreport.TheISIProgramPlanisevaluated for(a)compliance withtheappropriate edition/addenda ofSectionXI,(b)acceptability ofexamination sample,(c)exclusion
- criteria, and(d)compliance withISI-related commitments identified duringtheNuclearRegulatory Commission's (NRC)previouspreservice inspection (PSI)andISIreviews.The.requestsfor-relieffromtheASHECoderequirements whichtheLicenseehasdetermined tobeimpractical forthesecond10-yearinspection intervalareevaluated inSection3ofthisreport.Thisworkwas,funded under:U.S,NuclearRegulatory Commission FINNo.D6022,Project5Operating ReactorLicensing IssuesProgram,ReviewofISIforASHECodeClass1,2,and3Components 11 SUHHARYTheLicensee, IndianaandHichiganElectricCompany,haspreparedtheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection (ISI)ProgramPlanto.meettherequirements ofthe1983Edition,Summer1983Addenda(83S83)oftheASHECodeSectionXIexceptthattheextentofexamination forCodeClass1andCodeClass2pipingweldshasbeendetermined bythe1974EditionthroughSummer1975Addenda(74S75)aspermitted andrequiredby10CFR50.55a(b).
Thesecond10-yearintervalbeganJuly1,1986andendsJune30,1996.Theinformation intheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlan,Change1,datedDecember1985,wasreviewed, including therequestsforrelieffromtheASHECodeSectionXIrequirements whichtheLicenseehasdetermined tobeimpractical.
Asaresultofthisreview,aRequestforAdditional Information (RAI)wasprepareddescribing theinformation and/orclarification requiredfromtheLicenseeinordertocompletethereview.BasedonthereviewoftheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlan,theLicensee's responsetotheNRC'sRAI,andtherecommendations forthegrantingofrelieffromtheISIexamination requirements thathavebeendetermined tobeimpractical, ithasbeenconcluded thattheDonaldC.CookNuclearPlant,Unit1,Second10-Year'ntervalISIProgramPlan,Change1,datedDecember1985,isacceptable andincompliance with10CFR50.55a(g)(4).
I1I CONTENTSABSTRACT~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~o1iSUHMARY...........................................
......................i>i INTRODUCTION...........................................................1 12.EVALUATION OFINSERVICE INSPECTION PROGRANPLAN........................3 2.1Documents Evaluated..................................;..............3 2.2Compliance withCodeRequirements...............
..........:......3 2.2.1Compliance withApplicable CodeEditions........................3 2.2.2Acceptability oftheExamination Sample..............:..........4 2P'2.3Exclusion Crsteria..............................................4 2.2.4Augmented Examination Commitments.......;...
...................4 2.3Conclusions.........................................................4 03.EVALUATION OFRELIEFREQUESTS.......................................5 3.1Class1Components.
..............................................5 3.1.1ReactorPressureVessel(Noreliefrequests) 3.1.2Pressurizer (Noreliefrequests) 3.1.3HeatExchangers andSteamGenerators (Noreliefrequests) 3.1.4PipingPressureBoundary(Noreliefrequests) 3.1.5PumpPressureBoundary...................
..................5 3.1.5.1RequestforRelief1,Examination Categories B-L-1,B-.L-2,andB-G-1,ReactorCoolantPumpCasingWeld,PumpCasingInternalSurface,andPumpFlangeSurface.....
~..53.1.6ValvePressureBoundary(Noreliefrequests) 3,1.7General(Noreliefrequests) 3.2Class2Components.................................................
~93.2.1PressureVessels(Noreliefrequests) 3A.i.2P>p>ng.......................................
.9~~~~~~~~~~~~~~~93.2.2.1RequestforRelief2,Examination CategoryC-ItemC5.21,Class2Pipe-to-Flued HeadWelds.iv I'IIthA3 3.2.2.2RequestforRelief3,Examination CategoryC-F,ItemC5.21,Class2Pipe-to-Flued HeadWelds...............10 3.2.3'umps (Noreliefrequests) 3.2.4Valves(Noreliefrequests) 3.2.5General(Noreliefrequests) 3.3Class3Components (Noreliefrequests)
.4PressureTests.....................................................
1233.4.1Class1SystemPressureTests..................................12 3.4.1.1RequestforReliefP2(Part1of2),System.Hydrostatic TestofClass1PipingintheChemicalandVolumeControlSystem..................................12 3.4.1.2RequestforReliefP4,SystemHydrostatic TestofClass1PipingintheEmergency CoreCoolingSystem........
133.4.2Class2SystemPressureTests..................-.............
..143.4.2.1RequestforReliefPl,SystemHydrostatic TestofClass2PipingintheEmergency CoreCoolingSystem........
143.4.2.2RequestforReliefP2(Part2of2),SystemHydrostatic Test.ofClass2PipingintheChemicalandVolumeControlSystem...........................
3.4.2.3RequestforReliefP3,SystemHydrostatic TestofClass2PipingintheChemicalandVolumeControl~~~~16ystem.....................................................
16S3.4:2.4RequestforReliefP5,SystemHydrostatic TestofClass2PipingintheAuxiliary SpraytoReactorCoolantSystemandPressurizer, andChemicalandVolumeControlSystem..........
3.4.3Class3SystemPressureTests(Noreliefrequests) 3.4.4General.....
~~~~~~~~~~~~~~~~18.203.4.4.1RequestforReliefP2,SystemHydrostatic TestofClass1and2Pipingin,theChemicalandVolumeControlSystem,;.........
..............................20 3.5General(Noreliefrequests)
~CONCLUSIONo~~'t~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~2345oREFRENCcSo~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ii~~~i24I E'III<~1 TECHNICAL EVALUATION REPORTONTHE'SECOND10-YEARINTERVALINSERVICE INSPECTION PROGRAHPLAN:INDIANAANDHICHIGANELECTRICCOHPANY,DONALDC.COOKNUCLEARPLANT,UNIT1,DOCKETNUHBER50-3151.INTRODUCTION Throughout theservicelifeofawater-cooled nuclearpowerfacility, 10CFR50.55a(g)(4)
(Reference 1)requiresthatcomponents (including supports) whichareclassified asAmericanSocietyofHechanical Engineers
,(ASHE)BoilerandPressureVesselCodeClass1,Class2,andClass3meettherequirements, exceptthedesignandaccessprovisions andthepreservice examination requirements, setforthintheASHECodeSectionXI,"RulesforInservice Inspection ofNuclearPowerPlantComponents,"
(Reference 2)totheextentpractical withinthelimitations ofdesign,geometry, andmaterials ofconstruction ofthecomponents.
Thissectionoftheregulations alsorequiresthatinservice examinations ofcomponents andsystempressuretestsconducted duringthesecond120-month inspection intervalshallcomplywiththerequirements inthelatesteditionandaddendaoftheCodeincorporated byreference in10CFR50.55a(b) onthedate12monthspriortothestartofthesecond120-month inspection
- interval, subjecttothelimitations andmodifications listedtherein.Thecomponents (including supports) maymeet.requirements setforthinsubsequent editionsandaddendaofthisCodewhichareincorporated'y reference in10CFR50,55a(b) subjecttothelimitations andmodifications listedtherein.TheLicensee, IndianaandHichiganElectricCompany,haspreparedtheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection (ISI)ProgramPlan,Change1(Reference 3),tomeettherequirements ofthe1983Edition,Summer1983Addenda(83S83)oftheASHECodeSectionXIexceptthattheextentofexamination forCode,Class1andCodeClass2pipingweldshasbeendetermined bythe1974EditionthroughSummer1975Addenda(74S75)aspermitted andrequiredby10CFR50.55a(b).
Thesecond10-yearintervalbeganJuly1,1986andendsJune30,1996.Asrequiredby10CFR50.55a(g)(5),
ifthelicenseedetermines thatcertainCodeexamination requirements areimpractical andrequestsrelieffromthem, thelicenseeshallsubmitinformation andjustifications totheNuclearRegulatory Commission (NRC)tosupportthatdetermination.
Pursuantto10CFR50.55a(g)(6),
theNRCwillevaluatethelicensee's determinations under10CFR50.55a(g)(5) thatCoderequirements areimpractical.
TheNRCmaygrantreliefandmayimposealternative requirements thataredetermined tobeauthorized bylaw,willnotendangerlifeorpropertyorthecommondefenseandsecurity, andare.otherwise inthepublicinterest, jivingdueconsideration totheburdenuponthelicenseethatcouldresultiftherequirements wereimposedonthefacility.
/Theinformation intheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlan,throughChange1,datedDecember1985,wasreviewed, including therequestsforrelieffrom'theASMECodeSectionXIrequirements whichtheLicenseehasdetermined tobeimpractical.
ThereviewoftheISIProgramPlanwasperformed usingtheStandardReviewPlansofNUREG-0800 (Reference 4),Section5.2.4,"ReactorCoolantBoundaryInservice Inspections andTesting",
andSection6.6,"Inservice Inspection ofClass2and3Components."
InaletterdatedFebruary2,1987(Reference 5),theNRCrequested additional information thatwasrequiredinordertocompletetherevie'woftheISIProgramPlan:Therequested information wasprovidedbytheLicenseeinsubmittals datedApril10,1987(Reference 6)andJune1,1987(Reference 7).TheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlanisevaluated inSection2ofthisreport.TheISIProgramPlanisevaluated for(a)compliance withtheappropriate edition/addenda ofSectionXI,(b)acceptability ofexamination sample,(c)exclusion
- criteria, and(d)compliance withISI-related commitments identified duringtheNRC'spreviouspreservice inspection (PSI)andISIreviews.Therequestsforreliefareevaluated inSection3ofthisreport.Unlessotherwise stated,references totheCoderefertotheASMECode,SectionXI,1983Editionincluding AddendathroughSummer1983.Specificinservice test(IST)programsforpumpsandvalvesarebeingevaluated inotherreports.
Fa 2.EVALUATION OFINSERVICE INSPECTION PROGRAMPLANThisevaluation consisted ofareviewoftheapplicable programdocuments todetermine whetherornottheyareincompliance with,theCoderequirements andanylicenseconditions pertinent toISIactivities.
Thissectiondescribes thesubmittals reviewedandtheresultsofthereview.2.1Docume'nt valuatedReviewhasbeencompleted onthefol',owing information providedbytheLicensee:
(a)DonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlan,throughChange1,datedDecember1985;(b)Letter,datedApril10,1987,Licensee's responsetotheNRC'sRAI;and(c)Letter,datedJune1,1987,information theLicenseecommitted tointheApril10,-1987letter.2.2ComliancewithCodeReuirements 2.2.1ComliancewithAlicableCodeditionsTheInservice Inspection ProgramPlanshallbebasedontheCodeeditionsdefinedin10CFR50.55a(g)(4) and10CFR50.55a(b).
BasedonthestartingdateofJuly1,-1986,theCodeapplicable tothesecondintervalISIprogramisthe1980EditionwithAddendathroughWinter1981.AsstatedinSection1ofthisreport,theLicenseehaswrittentheDonaldC.CookNuclearP'.ant,Unit1,Second10-YearIntervalISIProgramPlan,throughChange1,tomeettherequirements ofthe1983Edition',
Summer1983AddendaotheCodeexceptthattheextentofexamination forCodeClassIandCodeClass2pipingweldshasbeendetermined bythe1974EditionthroughSummer1975Addendaaspermitted andrequiredby10C.'R50.55a(b).
Theuseof83SS3wasapprovedbytheNRCinaletterdatedJanuarv15,1986(Reference 8).
1,('f 2.2.2AccetabilitoftheExamination SamleInservice volumetric, surface,andvisualexaminations shallbeperformed onASMECodeClass1,2,and3components andtheirsupportsusingsamplingschedules described inSectionXIoftheASNECodeand10CFR50.55a(b).
Samplesizeandweldselection havebeenimplemented inaccordance withtheCodeandappeartobecorrect.2.2.3xclusionCriteriaThecriteriausedtoexcludecomponents fromexamination shallbeconsistent withParagraphs IWB-1220, IMC-1220, IWC-1230, IWD-1220, and10CFR50.55a(b).
Theexclusion criteriahavebeenappliedbytheLicenseeinaccordance withtheCodeasdiscussed intheISIProgramPlanandappeartobecorrect.2.2.4Augmented Examination Commitments Thefollowing augmented examinations willbeimplemented duringthesecond10-yearinspection interval:
(a)TheLicenseehascommitted tovolumetrically examinea7.5i'ample ofweldsintheContainment SpraySystem.(b)Examinations fortheReactorPressureVesselareincompliance withRegulatory Guide1.150,"Ultrasonic TestingofReactorVesselWeldsDuringPreservice andInservice Examination" (Reference 9).(c)Augmented examinations perRegulatory Guide1.14,"ReactorCoolantPumpFlywheelIntegrity" (Reference 10).2.3Conclusions Basedonthereviewofthedocuments listedabove,itisconcluded thattheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalISIProgramPlan,throughChange1,datedDecember1985,isacceptable andincompliance with10CFR50.55a(g)(4).
10~0(yg\
'.EVALUATION OFRELIEFREQUESTSTherequestsforrelieffromtheASMECoderequirements whichtheLicenseehasdetermined tobeimpractical forthesecond10-yearinspection intervalareevaluated inthefollowing sections.
3.1lassComonent3.1.1ReactorPressureVessel(Noreliefrequests) 3.l.2~i(II1ift.)3.1.3HeatExchanersandSteamGenerators (Noreliefrequests) 3.1.4PiinPressur'e Boundar(Noreliefrequests) 3.1;5PumPressureBoundar3.1.5.1RevestforReliefIExamination Catepries8--I8-L-2andB-G-IReactorCoolantPumCasinoMeldPumCasinoInternalSurface'ndPumFlaneSurfaceCodeReuirement:
SectionXI,TableIWB-2500-1, Examination CategoryB-L-I,Item812.10requiresa100%volumetric examination ofthepressureretaining pumpcasingweldsasdefinedbyFigureIWB-2500-16.
SectionXI,TableIWB-2500-1, Examination CategoryB-L-2,Item812.20requiresa100%visual(VT-3)examination oftheinternalsurfacesofClass1pumpcasings.SectionXI,TableIWB-2500-.',
Examination CategoryB-G-1,Item86.190requiresa100%visual(VT-1)examination oftheflangesurfacesofClass1pumpswhenconnection isdisassembled.
Examination includes.1',nchannularsurfaceofflangesurrounding eachstud.
Licensee's CodeReliefRevest:Reliefisrequested fromperforming theCode-required volumetric examination ofpumpcasingweld1-RCPandfromperforming theCode-required visualexaminations oftheinternalsurfacesofthepumpcasingsandthesurfacesofthepumpflanges.iensee'sProo'sedAlternative xamination:
TheLicenseestatesthat,'nlieuofthe'requirements ofSectionXIforcategories B-L-1andB-L-2,avisualexamination (VT-2)willbeperformed on.theexternalsurfacesofonepumpduringthehydrostatic pressuretests.Inaddition, asurfaceexamination willbeperformed onthispumpontheaccessible externalsurfaceoftheweld.Ifapumphastobedisassembled formaintenance, visualexaminations willbemadeoftheinternalsurfaces(VT-3)andtheflangesurface(VT-1)tosatisfytheB-L-2andB-G-1Coderequirements.
TheLicenseestatesthattheneedforthevolumetric examination according totheB-L-1requirement willbereevaluated atthattime.Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesubstantial radiation exposurethatinspection personnel willincurandthesubstantial costsinvolveddonotjustifythepossibleinformation thatmightbegainedabouttheweldandadjacentbasemetal.ThepumpcasingismadefromASNESA-351,GradeCF-SH,acastaustenitic stainless steelthathasalonghistoryofsatisfactory serviceinhandlingfluids.Thecasingwasmadeintwosectionstofacilitate thecastingprocess,andthetwosectionsareweldedtogetherwithamatchingfillermaterial.
Thematerialhasgoodfracturetoughness, andunlikeferriticsteels,isnotsubjecttofractureprevention criteria.
Volumetric andinternalcasingvisualexamination willrequirecompletedisassembly ofthepump.Disassembly ofthepump,s.orageoftheinternals, andplacement offilmforthemany IhI radiographic exposures thatwillberequired, willexposepersonnel tosubstantial radiation.
Fromexperience atothernuclearplantsexamining reactorcoolantpumps,personnel exposurecouldbeintherangebetween35to100man-rem.Flushingorshielding wouldnotbeexpectedtosignificantly reduceradiation levels.Basedoncostsincurredbyothernuclearplants,thispumpexamination isestimated tocostabout$500,000,whichdoesnotincludecostsassociated withunitunavailability shouldth'isexamination requireextending anoutage.TheCode-required examination willrequiredisassembly ofapumpunderadverseconditions wherethereisapossibility ofcausingdamagetothepumpinternals.
Thereisnootherreasontodisassemble anyofthesepumpsotherthantoperformtheseexaminations.
Thisexamination willalsorequirehandlingthereactorvesselupperinternalassemblyanadditional time,astheupperinternals willhavetobeputbackintothereactorvesseltominimizeairborneradiation duringthepumpexamination.
Basedontheforegoing, andthefactthatCodereliefwasgrantedfortheD.C.Cookreactorcoolantpumpsforthefirstinterval, aswassimilarly grantedforreactorcoolantpumpsinothernuclearplants,theLicenseebelievesthattheradiation exposureandcostsforthisexamination donotjustifyperforming thevolumetric andvisualexaminations tomeettherequirements ofCategories B-L-l,B-L-2,andB-G-I.Evaluation:
Thevisualexamination istodetermine whetherunanticipated severedegradation ofthecasingisoccurring duetophenomena suchaserosion,corrosion, orcracking.
However,previousexperience duringexamination ofpumpsatotherplantshasnotshownanysignificant degradation ofpumpcasings.Theconceptofvisualexamination ifthepumpisdisassembled formaintenance isacceptable.
Ifthepumpisdisassembled for maintenance, theCode-required volumetric examination ofthepumpcasingweldshouldalsobeperformed.
Thedisassembly ofthepumpssolelyforthepurposeofinspection isamajoreffortand,inadditiontothepossibility ofadditional wear.'rdamagetotheinternalsurfacesofthepumps,couldresultinlargeamountsofradiation exposuretopersonnel.
However,ifoneofthepumpsisdisassembled formaintenance, thecasingweld,internalsurfaces, andflangesurfacewouldbeexamined, inwhichcasereliefwouldnotberequiredfor'thatparticular pump.Conclusions:
Basedontheaboveevaluation, itisconcluded thatcompliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended that:(a)TheLicensee's proposaltoperformthevisualexamination oftheinternalsurfaces(VT-3)andtheflangesurface(VT-I)ofthepumps,whenevertheyaremadeaccessible duetodisassembly formaintenance, shouldbeaccepted, providedthattheCode-r'equired volumetric examination ofthepumpcasingweldisalsoperformed; and(b)Reliefshouldbegrantedattheendoftheintervalifoneofthesubjectpumps,forwhichthevisualandvolumetric examinations arerequired, hasnotbeendisassembled formaintenance.
3.1.6:ValvePressureBoundar(Noreliefrequests) 3.1.7General(Noreliefrequests) 3.2Class2Comonents3.2.1PressureVessels(Noreliefrequests) 3.2.2~Piin3.2.2.1euestforRelief2Examination CateorC-FternC5.lassPie-to-Flued HeadWeldsCodeReuirement:
SectionXI,TableIWC-2500-1, Examinat)on CategoryC-F,ItemC5.21requiresa100%%usurfaceandvolumetric examination ofthepressureretaining circumferential weldsinClass2piping,greaterthanI/2inchnominalwallthickness, asdefinedbyFigureIWC-2500-7.
icensee's CodeReliefReuest:Reliefisrequested fromperforming theCode-required surfaceandvolumetric examination ofpipe-to-flued headweld01SintheFeedwater SystemandLfluedhead-to-pipe weld12FintheMainSteamSystem.Licensee's ProosedAlternative xamination:
TheLicenseestatesthat,inlieuoftherequirements ofSectionXI,thefirstaccessible weldoutsideeachpenetration willbeexaminedwiththeCode-required surfaceandvolumetric examinations.
Thisproposedalternative examination wasusedinthefirst10-yearinterval.
Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesubjectweldsaretotallyenclosedwithinapenetration sleeve,andareinaccessible forexamination.
Sincetheinaccessible pipe-to-flued headweldthickness issubstantially heavierthanthe.proposedalternative weldtobeexaminedandtheyareexposedtothesameenvironment, theoveralllevelofplantsafetywillnotbereducedbyperforming thealternative examination.
l4 J'valuation:
TheLicensee's submittal hasbeenreviewed, including thedrawingwhichshowstheexa'mination obstructions.
TheCode-required surfaceandvolumetric examinations ofthesubjectweldsareimpractical toperformbecausetheseweldsarelocatedinsidecontainment penetrations andarecompletely inaccessible.
Becausethefirstaccessible weldoutsideeachpenetration willreceivetheCode-required surfaceandvolumetric examinations, samplesizeismaintained.
Thesubjectweldscanonlybeexaminedbyinspecting forevidenceofleakageduringsystemhydrostatic tests.Althoughthesecontainment penetration weldscannotbevieweddirectly, theLicenseeshouldconductvisualexaminations forevidenceofleakageinthevicinityoftheseweldswhenthehydrostatic pressuretestsareperformed.
Bd'hb1i,<<ilddthattheCode-required surfaceandvolumetric examinations ofthesubjectweldsareimpractical toperformandthattheproposedalternative examination ensuresanacceptable levelofinservice structural integrity.
Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested providedthatvisualexaminations areperformed onthetwocontainment penetration assemblies when'eakageandhydrostatic testsareconducted inaccordance withIWA-5000.
3.2.2.2ReuestforRelief3Examination CateorC-FItemC5.21lassPie-to-Flued HeadWeldsCodeReuirement; SectionXI,TableIWC-2500-1, Examination CategoryC-F,ItemC5.21requiresa100/surfaceandvolumetric examination ofthepressureretaining circumferentia'.
weldsinClass2piping,greaterthanI/2inchnominalwallthickness, asdefinedbyFigureIWC-2500-7.
10 icensee's CodeReliefRevest:Reliefisrequested fromperforming theCode-required surfaceandvolumetric examinations ofpipe-to-flued headweldIOFintheMainSteamSystem.icensee's ProosedAlternative xamination:
TheLicenseestatesthat,inlieuoftherequirements ofSectionXI,oneadjacentweldinonemainsteamline.willbeexaminedwiththeCode-required surfaceandvolumetric examinations.
Thisproposedalternative examination wasusedinthefirst10-yearinterval.
Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesubjectweldisinaccessible duetothelargepipewhiprestraint whichsurrounds theweld.andadjacentarea.Volumetric examination byultrasonics isimpractical becausetheweldcannotbereach'edforpositioning andhandlingthetransducer, andradiography isimpractical becausetheexposurewouldhavetobemadethroughtherestraint.
Surfaceexamination isimpractical becausetheweldisnotreadilyaccessible forapplication andremovalofpenetrant ormanipulation ofmagneticparticleequipment.
Removalofthepipewhiprestraints wouldrequiretorchcutting2400and2700-lbsectionsthataresupported fromabove.Theserviceconditions towhichanadjacentweldisexposedshouldbenearlyidentical tothatoftheinaccessible weld,ardthustheoveralllevelofplantsafetywillnotbereducedbyperforming theproposedalternative examination.
Evaluation:
TheLicensee's submittal hasbeenreviewed, including thedrawingwhichshowstheexamination obstructions.
TheCode-required surfaceandvolumetric examinations ofthesubjectweldareimpractical becausethisweld(andadjacentarea)issurrounded byalargewhiprestraint andiscompletely inaccessible.
BecauseanadjacentweldwillreceivetheCode-required surfaceandvolumetric
examinations, samplesizeismaintained.
Thesubjectweldcanbeexaminedonlybyinspecting forevidenceofleakageduringsystemhydrostatic tests.Althoughthiscontainment penetration weldcannotbevieweddirectly,.
theLicenseecouldconductvisualexaminations forevidenceofleakageinthevicinityofthisweldwhenthehydrostatic pressuretestsareperformed.
d1<<:Bddd1d,dd iddthattheCode-required surfaceandvolumetric examinations ofthesubjectweldareimpractical andthattheproposedalternative examination ensuresanacceptable levelofinservice structural integrity.
Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested providedthatvisualexaminations forevidenceofleakageareperformed inthevicinityofthecoveredweldwhentheCode-required leakageandhydrostatic testsareconducted.
3.2.3~Pums(Noreliefrequests) 3.2.4Valves(Nureliefrequests)
'.2d5General(Noreliefrequests) 3.3Class3Comonents(Noreliefrequests) 3.4PressureTests3.4.1Class1SstemPressure.
Tests3.4.1.1RevestforReliefP2Partof2SystemHdrostatic TestofClass]PiinaintheChemicalandVolumeControlSstemNOTE;Seetheevaluation ofthisrequestforreliefinSection3,4.4.1.12 I
3.4.1;2RvestforReliefP4SstemHdrstaticTestofClas1iinintheEmerencCoreCoolinSstemCodeReuirement:
SectionXI,ArticleIWB-5000requiresthat,foranoperating pressureof2235psig,theClass1pipingbetestedatapressureof2458psig.icensee's CodeReliefReuest:Reliefisrequested fromperforming theCode-required hydrostatic testofthefollowing Class1pipingsectionsintheEmergency CoreCoolingSystemattherequiredtestpressureof2458psig:ValvesIH0-51,SI-142LI-BoronInjection LoopNo.1ValvesIH0-52,SI-142L2-BoronInjection LoopNo.2ValvesIH0-53,SI-142L3-BoronInjection LoopNo.3ValvesIH0-54,SI-142L4-BoronInjection LoopNo.4icensee's ProosedAlternative Examination:
TheLicenseestatesthatthesubjectsectionsofpipingwillbetestedatapressureof2280psig.Thetestwillbeperformed duringHode3withtheRCSpressureat2280psigandtemperature greaterthanorequalto500'F.TheRCSpressurewillbeusedtoblockcheckvalvesSI-142L1throughL4closed;therefore, maximumpressurewillbe2280psig.Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesectionsofthepipingsystemupstreamofcheckvalvesSI-142L1-through L4cannotbetestedatapressureof2458psigwithoutmakingtemporary modifications (blocking thevalvedisc)tokeepthecheckvalvesclosed.Sincethepipingsectionsarepartoftheprimarysystem,plantpersonnel willbesubjected tosubstantial radiation exposureandcontamination inordertocarryoutsuchmodifications forthetest..Theproposedtestpressureishigherthanthe2235psignominaloperating pressureinthesubjectsectionsofpiping,eachapproximately 44to55feetlong.13
/valuation:
Becausethesystem'sdesigndoesnotpermitpressurizing thesectionsofpipingtotheCode-required pressurewithoutextensive temporary valvemodifications, the..Codetestpressurerequirement isimpractical.
Thevisualinspection ofthepipingduringthepressuretestaswellasthevolumetric examination requirements forselectedweldsinthesystemwillprovideadequateassurance ofthecontinued structural integrity ofthepiping.Thedifference intherequiredtestpressureandthatproposedbytheLicenseedoesnotwarrantimposition oftheCoderequirement.
==
Conclusions:==
Basedontheaboveevaluation, itisconcluded thattheCoderequirements areimpractical andthatthealternative testproposedbytheLicensee, inconjunction withtheotherNDErequirements, willensureanacceptable levelofinservice structural integrity.
Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthe'evelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested.
3.4.2Class2SstemPressureTests3.4.2.1ReuestforReliefPSstemHdrostatic TestofClass2PiinointheEmerencCoreCoolinSstemCodeReuirement:
SectionXI,ArticleIWC-5000requiresthat,forasystemdesignpressureof2485psig,theClass2pipingbetestedatapressureof2733psig.icensee's CodeReliefReuet:Reliefisrequested fromperforming theCode-required hydrostatic testofthefollowing Class2pipingsectionsintheEmergency CoreCoolingSystemattherequiredtestpressureof2733psig:(a)Accumulator No.1Discharge Piping-ValvesIH0-110,SI-166-1, IRV-115,andSI-168-1; 14 lg~,'UJq'l (b)Accumulator No.2Discharge Piping-ValvesIH0-120,SI-166-2, IRV-125,andSI-168-2; (c)Accumulator No.3Discharge Piping-ValvesIH0-130,SI-166-3, IRV-135,andSl-168-3; and(d)Accumulator No.4Discharge Piping-ValvesIH0-140,SI-166-4, IRV-145,andSI-168-4.
icensee's ProosedAlternative Examination:
TheLicenseestatesthatthesubjectsectionsofpipingwillbetestedatapressureof2280psig.Thetestwillbeperformed during.Mode3withtheRCSpressure.
at2280psigandtemperature greaterthanorequalto500'F.TheRCSpressurewillbeusedtoblockthecheckvalves(SI-166-1,
-2,-3,and-4)closed,therefore, limitingmaximumpressureto2280psig.Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesectionofpipingupstreamofcheckvalvesSI-166-1through4cannotbetestedatapressureof2733psigwithoutmakingextensive temporary modifications tokeepthevalvesclosed.Themodifications wouldrequire:(a)disas'sembly ofthevalves,(b)weldingoftemporary blocks(onthedownstream side)insidethevalvebodiestoholda"jackscrew"typearrangement tokeepthevalveclosed,(c)removalofthetemporary blockingdevicesfromthevalvesaftertesting,and(d)performing necessary nondestructive testingtoensuretheintegrity ofthevalvebodiesbeforereturning themtoservice.Thepipingdownstream ofthesevalvesispartoftheRHRSystemandcarriesradioactive fluidduringnormaloperation.
Therefore, plantpersonnel willbesubjected tosubstantial radiation exposureandradioactive contamination inordertocarry.outany.modifications forthetest.Evaluation:
Thesystem'sdesigndoesnotpermitpressurizing thesectionsofpipingtotheCode-required pressurewithouteitherextensive temporary valvemodifications oroverpressurizing theClass1sectionsofconnected piping.15
\I~i Becauseofthis,thetestpressurerequirement isimpractical toattain.Thesectionsofpipingwillbesubjected toa'ressure slightlyhigherthannormaloperating pressureandatatemperature higherthanthatrequired, bytheCode.Thevisualinspection ofthepipingduringthepressuretestaswellasthevolumetric examination requirements forselectedweldsinthesystemwill'provide adequateassurance ofthecontinued structural integrity ofthepiping.Conclusions:
Basedontheaboveevaluation, itisconcluded thattheCoderequirements areimpractical andthatthealternative testproposedbytheLicensee, inconjunction withtheotherNDErequirements, willensureanacceptable levelofinservice structural integrity.
Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested.
3.4.2.2ReuestforReliefP2Part2of2SstemHdrostatic TestoFClass2PiinintheChemicaland'olume ControlSstemNOTE:Seetheevaluation ofthisrequestforreliefinSection3.4.4.1.3.4.2.3RevestforReliefP3SstmHdrostatic TestofClass2PiinintheChemicalandVolumControlSstemCodeReuirement:
SectionXI,ArticleIMC-5000requiresthat,foradesignpressureof2485psig,theClass2pipingbehydrostatically pressuretestedatapressureof3106psig.Licensee's CodeReliefReuest:Reliefisrequested fromperforming theCode-required hydrostatic pressuretestofthe16 aLetdownLines(ValvesQRV-112,QRV-160,QRV-161,andQRV-162)intheChemicalandVolumeControlSystem(ReactorLetdownandCharging) attherequiredtestpressureof3106psig.icensee's ProosedAlternative xamination:
TheLicenseestatesthatthesubjectsectionofpipingwillbetestedatapressureof2280psigduringNode3usingRCSpressure.
ValvesQRV-illandQRV-112willbeopenedwithQRV-160;QRV-161,andQRV-162closed.Licensee's BasisforReuestinRelief:TheLicenseestatesthatthesubjectsectionofpipingcannotbetestedatapressureof3106psigwithout(a)usingaspareone-inchpluggedconnection inUnit1pipinglocateddownstream ofinstrument QTA-160intheregenerative.
heatexchanger room,whichisconsidered ahighradiation area,and(b)modification, sincenotestconnection existsinUnit2piping.Thispipingcarriesradioactive fluidduringnormaloperation; therefore, plantpersonnel willbesubjecttosubstantial radiation exposureandcontamination
',nordertomodify/add atestconnection.
Asanalternative, extending thetestboundarytoQCR-301wasconsidered.
ThiswouldinvolveusingQPX-301locatedonthedownstream pipingoutsidethe.regenerative heatexchanger roomasatestconnection.
Thisalternative wasalsorejectedbecausevalveQCR-301andtheflangeboltedtotheinletflangeofsafetyvalveSV-051areinthe600-lbclasswhichcannotwithstand theabovetestpressure.
~valuatior:
Thesystem'sdesigndidnotincludeatestconnection toallowpressurizing totheCodetestpressureorpipiengandvalvesratedappropriately toaccommodate therequiredpressureatotherisolation pointsinthesystem.InordertocomplywiththeCoderequirement, theLicenseewouldhavetoinstallatestconnection oroverpressurize lowerratedpipingandcomponents.
Therefore, theCoderequirement is17 impractical.
TheLicensee's proposedalternative testwillsubjectthepipingtoapressureslightlyhigherthannormaloperating pressure.
Therequiredvisualinspection ofthepipingatthetestpressureandotherrequiredNDEoftheweldsinthesystemwillprovideadequateassurance ofthecontinued structural integrity ofthepiping.Conclusions:
Basedontheaboveevaluation, itisconcluded thattheCoderequirements areimpractical andthatthealternative testproposedbytheLicensee, inconjunction withtheotherNOErequirements, willensureanacceptable levelofinservice structural integrity.
Compliance withthespecific.
requirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested.
3.4.2.4RevestforReliefP5SystemHdrostatic TestofClass2PiinintheAuxiliarSratoReactorCoolantSstemandPressurizer andChemicalandVolumeControlSstemCodeReuirement:
SectionXI,ArticleIMC-5000requiresthat,foradesignpressureof2735psig,theClass2pipingbetestedatapressureof3419psig.Licensee's CodeReliefRevest:Reliefisrequested fromperforming theCode-required hydrostatic pressuretestoftheClass2pipingsectionsdescribed bythefollowing pipingboundaries attherequiredtestpressureof3419psig:ValvesQRV-51CS-326ValvesQRY-61CS-322ValvesQRV-62.Licensee's ProosedAlternative Examination:
TheLicenseestatesthatthesubjectsectionsofpipingwillbetestedatapressureof2800psigusinga"stemblock"tokeepvalveQRV-51closed.
+"IlegE<.
icensee's BasisforReuestinRelief:TheLicenseestatesthat,inordertoperformthepressuretestofthesesectionsofpiping,valveHARV-51hastobeusedasanisolation valve.This1500-lbclass,air-operated controlvalveisdesignedtowithstand testpressureof3419psigintheopenposition.
However,itcannotbeusedasanisolation valvebecauseitwasdesignedforadifferential pressureof1200psig.Thevalvecannotbekeptclosedduringpressuretestingat3419psigwithoutextensive, temporary rigging.Themodification wouldrequire:(a)removaloftheairoperatorandinstallation ofa"strongback"tokeepthevalveclosedduringtesting,(b)removalofthe"strongback"afterthetesting,and(c)reinstallation oftheairoperatoronthevalveandrestoring thevalvetooperablecondition beforereturning toservice.Thevalveislocatedinsidetheregenerative heatexchanger room,whichisaveryhighradiation areaandplantpersonnel wouldbesubjected toradiation exposureoffivetosevenman-rems.
Asanalternative, thepossibility ofusingafreezesealplugdownstream ofHARV-51wasconsidered.
Thiswouldinvolveextensive workingtimeclosetothepressurizer sprayvalves,whichareinahighradiation area.Thisalternative was",ejectedbeauseplantpersonnel wouldbesubjecttoanevenhigherradiation eXposureof8.5man-remsduringformation, monitoring, andremovalofthefreezesealplug.Evaluation:
TheabovepipingsystemcannotbetestedtoASHECoderequirements withoutmodifying thesystemand/orexposingpersonnel tolargeamountsofradiation.
TheproposedtestCpressureishigherthanthenormaloperating pressureof2235psigintheapproximately 30-foot-long sectionofpipingforwhichCodereliefisrequested.
Theproposedtes+pressureis25llabovethenormaloperating pressure.
Thus,thetestprovidesreasonable assurance oftheintegrity ofthepiping.19 Clli:Bdthbii,<<<*1ddthattheCoderequirements areimpractical andthatthealternative testproposedbytheLicensee, inconjunction with.theotherNDErequirements, willensure*anacceptable levelofinservice structural integrity.
Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityaridsafety.Therefore, itisrecommended thatreliefbegrantedasrequested.
3.4.3Class3SstemPressureTests(Noreliefrequests) 3.4.4General3.4.4.1ReouestforReliefP2SstemMdrostatic TestoFClass1and2PiinintheChemicalandVolumeControlSstemCodeReuirement:
SectionXI,ArticleIWB-5000requiresthat,foranoperating pressureof2235psig,theClass1pipingbetestedatapressureof2458psig.SectionXI,ArticleIWC-5000requiresthat,foradesignpressureof2735psig,theClass2pipingbetestedatapressureof3419psig.icensee's CodeReliefRevest:Reliefisrequested fromperforming theCode-required hydrostatic testofthefollowing Class1and2pipingsectionsintheChemicalandVolumeControlSystem(Reactor'Letdown andCharging) attheCode-required testpressures of2458and3419psig:(a)Class1piping:Two-inchAuxiliary SprayPiping-ValvesHARV-SlandCS-325;(b)Class2piping:NormalChargingLoop4ColdLeg-ValvesgRY-62,CS-328L4, CS-326,andCS-327;20 (c)Class2piping:Alternate ChargingLine'oLoop1ColdLeg-ValvesHARV-61andCS-328L1.
icensee's ProosedAlternative Examination:
TheLicenseestatesthatthesubjectsectionsofpipingwillbetestedatapressureof2280psigatatemperature above100'F.Thetestwillbeperformed duringMode3withtheReactorCoolantSystem(RCS)pressureat2280psigandtemperature greaterthanorequalto500'F.TheRCSpressurewillbeusedtoblockthecheckvalvesCS-329L1, CS-329L4, andCS-325closed;therefore, maximumpressurewillbe2280psig.Licensee's BasisforReuestinRelief:TheLicenseestatesthatcheckvalvesCS-328L1, CS-328L4, andCS-325arelocatedonthecharginglinesto'heRCSSystem.Thesevalvesmustbedisassembled andtemporarily modifiedtoblockthemclosedinordertoperformtherequiredhydrostatic tests,andplant"personnel willbeexposedtohighradiation andradioactive contamination duringthemodification.
Theproposedtestpressureishigherthan2235psignominaloperating pressureinthesectionofpipingbetween23and115feetlongforwhich'elief isrequested.
fvaluation:
Thesystem'sdesigndoesnotpermitpressurizing thesectionsofpipingtotheCode-required pressurewithouteitherextensive temporary valvemodifications oroverpressurizing theClass1sectionsofconnected piping.Becauseofthis,theCode-required testpressureisimpractical toattain.Thesectionsofpipingwillbesubjected toapressureslightlyhigherthannormaloperating pressureandatatemperature higherthanthatrequiredbytheCode.Thevisual,i'nspection ofthepipingduringthepressuretest,aswellasthevolumetric examination requirements forselectedweldsinthesystems,willprovideadequateassurance ofthecontinued structural integrity ofthepiping.21 j
==
Conclusions:==
Basedontheaboveevaluation, itisconcluded thattheCoderequirements areimpractical andthatthealternative testproposedbytheLicensee, inconjunction withtheotherNDErequirements, willensureanacceptable levelof'inservice structural integrity.
Compliance withthespecificrequirements ofSectionXIwouldresultinhardshiporunusualdifficulties withoutacompensating increaseinthelevelofqualityandsafety.Therefore, itisrecommended thatreliefbegrantedasrequested.
3.5Genera1(Noreliefrequests) 22 gPIQ 4.CONCLUSION Pursuantto10CFR50.55a(g)(6),
ithasbeendetermined thatcertainSectionXIrequiredinservice examinations areimpractical toperform.Inthesecases,theLicenseehasdemonstrated thateithertheproposedalternatives wouldprovideanacceptable levelofqualityandsafetyorthatcompliance withtherequirements wouldresultinhardships orunusual\difficulties withoutacompensating increaseinthelevelof.quality'.and safety.Thistechnical evaluation reporthasnotidentified anypractical method'bywhichtheexistingDonaldC.CookNuclearPlant,Unit1,canmeetallthespecificinservice inspection requirements ofSectionXIoftheASHECode.Requiring compliance withalltheexactSectionXIrequiredinspections wouldrequireredesignofasignificant numberofplantsystems,sufficient replacement components tobeobtained, installation ofthenewcomponents, andabaselineexamination ofthesecomponents.
Evenaftertheredesignefforts,completecompliance withtheSectionXIexamination requirements probablycouldnotbeachieved.
Therefore, itisconcluded thatthepublicinterestisnotservedbyimposinacertainprovisions ofSectionXIoftheASthECodethathavebeendetermined tobeimpractical.
Pursuantto10CFR50.55a(g)(6),
reliefisallowedfromtheserequiremerts whichareimpractical toimplement.
Thedevelopment ofneworimprovedexamination techniques willcontiruetobemonitored.
Asimprovements intheseareasareachieved, theNRCmayrequirethatthesetechniques beincorporated inthenextinspection intervalISIprogramplanexamination requirements.
BasedonthereviewoftheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection ProgramPlan,Change1,datedDecember1985,theLicensee's responses totheNRC'sRequestforAdditional Information, andtherecommendations forgrantingrelieffromtheISIexamination requirements thathavebeendetermined tobeimpractical, ithasbeenconcluded thattheDonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection ProgramPlan,Change1,datedDecember1965,isacceptabl andincompliance with10CFR50.55a(g)(4).
Ih) 5.REFERENCES 1.CodeofFederalRegulations, Volume10;Part50.2.AmericanSocietyofHechanical Engineers BoilerandPressureVesselCode,SectionXI,Division1:1983EditionthroughSummer1983Addenda1974EditionthroughSummer1975Addenda3.DonaldC.CookNuclearPlant,Unit1,Second10-YearIntervalInservice Inspection ProgramPlan,Change1,datedDecember1985.4.NUREG-0800, StandardReviewPlans,Section5.2.4,"ReactorCoolantBoundaryInservice Inspection andTesting,"
andSection6.6,"Inservice Inspection ofClass2and3Components,"
July1981.5.Letter,February2,1987,B.J.Youngblood (NRC)toJ.E.Dolan[IndianaandHichiganElectricCompany(IHEC)],"RequestforAdditional Information forReviewoftheDonaldC.CookNuclearPlant,Units1and2,Second10-YearIntervalInservice Inspection ProgramPlans,Change1,datedDecember1985."6.Letter,April10,1987,H.P.Alexich(IHEC)toH.R.Denton(NRC),"Response toRequestforAdditional Information ontheISISecond10-Year'nterval MeldProgramfortheDonaldC.CookNuclearPlant,Units1and2."7.Letter,June1,1987,M.P.Alexich(IHEC)toT.E.Hurley(NRC),"Response toRequestfor.Additional Information ontheISISecond10-YearIntervalWeldProgramfortheDonaldC.CookNuclearPlant,Units1and2."8.Letter,January15,1986,B.;J.Youngblood (NRC)toJ.E.Dolan(IHEC),"NRCApprovalforIndianaandHichiganElectricCompanytoUseASHECodeSectionXI,1983EditionwithSummer1983AddendafortheISI/ISTProgramfortheDonaldC.CookNuclearPlant,Units1and2."24 9..Regulatory Guide1.150,"Ultrasonic TestingofReactorVesselWeldsDuringPreservice andInservice Examinations,"
Revision1,datedFebruary1983.10.Regulatory Guide1.14,"ReactorCoolantPumpFlywheelIntegrity,"
Revision1,datedAugust'1975.25 1E'trEf:%(
711Cf01M~I5Ski11CUIIGT,STOI,STGTBIBUOGRAPHIC DATASHEETEGG-SD-7799 VLIIVCLEA11EOVLATOAV COMMISSIQM I15fOATIIVMSE1IAIVfkkfkfTIDCkkfVMflf,el~iSEEIMSTAUCTIQIISOM TIIE1EVE1555.TITLfAIIQ5VSTITLETechnical Evaluation ReportontheSecond10-YearIntervalInservice Inspection ProgramPlan:IndianaandHichiganElectricCo.,DonaldC.CookNuclearPlant,Unit1,DocketNumber50-3155LEAVE~LAIIILkDATE1EfOATCOMfLETED TEA1MOIeTM5AVT+01ISI July1988~D*TE15fo1TISSVEOB.W.Brown,J.D.HudlinTff1fQAMIMGOAGAIIIZATIOM MAMEAMDMAILIUGAOD155$llkfMffjMCkkrlEG&GIdaho,Inc.P.0.Box1625IdahoFalls,ID83415-2209 MOUTHJuly~,t1QIEGTITASA.'ITQAA vMITMMM4515fIII01G1AIITMVME51TEA1198810SfOIISOIIIIIG QAGAIIIZATIOII IIAV5AMOUAILIUGAQOIIESSllkf~ZMCkff1Haterials Engineering BranchOfficeofNuclearReactorRegulation U.S.NuclearRegulatory Commission Washington, D.C.20555ISSVffLEMEVTkflv MOTE5FIN-D6022 (Propre'ct 5)II~TvfEOf15>OATTechnical
~.f5fIIQDCOVEfIEDIlkMVAM<<MM1$AESTAACTIowaorranThisreportpresentstheresultsoftheevaluation oftheDonaldC.CookNuclearPl,ant,Unit1,Second10-YearIntervalInservice Inspection (ISI)ProgramPlan,Change1,datedDecember1985,including therequestsforrelieffromtheAmericanSocietyofHechanical Engineers (ASHE)BoilerandPressureVesselCodeSect'ionXIrequirements whichtheLicenseehasdetermined tobeimpractical.
InSection2ofthisreport,theISIProgramPlanisevaluated for(a)compliance withtheappropriate edition/addenda ofSectionXI,(b)acceptability oftheexamination sample,(c)exclusion
- criteria, and(d)compliance withISI-related commitments identified duringtheNuclearRegulatory Commission's (NRC)previouspreservice inspection (PSI)andISIreviews.TherequestsforrelieffromtheASHE'Code requirements whichtheLicenseehasdetermined tobeimpractical forthefirst10-yearinspection intervalareevaluated inSection3ofthisreport.I~OQCLIMEMT AMALT515~KETIVQ"DSIGESCAPTO15
'lfkbki&SILsT>
STATEMEIIT 1iOEMTlflfASloff~
f4QEOTEAMSUnlimited I~5ECVAITVCLASSIfICATIDM Un'ssifiedjfkvIwortiUnclassified 111VMSfkGIkkGESIffklCE I