ML17320B005

Revised Application for Amend to License DPR-74,providing Addl Info on Frequency for Torque Testing Ice Condenser Inlet Doors & Capability to Isolate Containment Svc Air.Rept on Test Dates & Drawing of Isolation Valves Encl

ML17320B005
Person / Time
Site:	Cook
Issue date:	04/19/1984
From:	ALEXICH M P INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	DENTON H R Office of Nuclear Reactor Regulation
References
AEP:NRC:0860-G, AEP:NRC:860-G, NUDOCS 8404260049
Download: ML17320B005 (21)

Text

REGULATORY LNFORMATION DISTRIBUTION SYbIEh1(RIDS)ACCESSION NBR8404260049 DOC~DATE84/04/19NOTARIZED, NODOCKET¹FACIL:50-316 DonaldC.CookNuclearPowerPlant~Unit2~IndianaL05000316AUTHBYNAMEAUTHORAFFILIATION ALEXICH<M.PE IndianaLMichiganElectricCo.RECIP,NAME RECIPIENT AFFILIATION DENTONgH~REOfficeofNuclearReactorRegulationi Director

SUBJECT:

Revisedapplication foramendtoLicenseDPR<<.,74iprovidjng addiinfoonfrequency fortorquetestingicecondenser inletdoors8capability toisolatecontainment svcair,ReptontestdatesLdrawingofisolation valvesencl.DISTRIBUTIQN CODE:A001SCOPIESRECEIVED:LTR gENCLSIZE:TITLE:ORSubmitta1:Genera1Distributiof1NOTES'ECIPIENTIDCODE/NAME NRRORB1BC01INTERNALS ELD/HDS3NRR/DLDIRNTBHEGFILE04COPIESLTTRENCL7710111111RECIPIENT IDCODE/NAME NRR/DE/MTEB NRR/DL/ORAB NRR/DSI/RAB RGN3COPIESLTTRENCL11101111EXTERNAL:

ACRSNRCPDRNTIS09026111LPDRNSIC03051111TOTALNUMBEROFCOPIESREQUIRED:

LTTR25ENCL23 rVRrl}f<<<<gRntOIR't',iR',I)ff.RI}1IR't"))IflRR')iWIIR/ll'll r'IWfIR}r)}<<f(i}I<<R'RRlrjI}I'IWr<<Rllfr)<<rr)RRRIIR',Wl)II<<I'R'rplftW'"}Wt)<<TilJtR1<<In)IhI}"I~IH INDIANA8MICHIGANFLECTRICCOMPANYP.O.BOX16631COLUMBUS, OHIO43216APIi119,1984AEP:NRC:0860G DonaldC.CookNuclearPlantUnit2DocketNo.50-316LicenseNo.DPR-74AMENDMENT TOTECHNICAL SPECIFICATION CHANGEREQUESTMr.HaroldR.Denton,DirectorOfficeofNuclearReactorRegulation U.S.NuclearRegulatory Commission Washington, D.C.20555

DearMr.Denton:

Thisletterprovidesfurtherinformation regarding theTechnical Specification changerequestcontained inourletterNo.AEP:NRC:0860 datedMarch1,1984,asperphoneconversations heldwithmembersofyourstaff.Specifically, wewererequested toprovideadditional detailswithregardtothesecondandfourthproposedchangesinAEP:NRC:0860.

Thesecondchangeinvolvedthefrequency fortorquetestingtheicecondenser inletdoors.Attachment 1tothisletterisplantreportNo.STP.207datedFebruary27,1984.Theplantreportshowsthelowerinletdoortestdatesandthecorresponding condition reports.Thecondition reportsdescribethecausesfortheconditions andthecorrective actionstakentoassurethattherespective doorsfunctionproperly.

Thefourthchangeinvolvedthecapability toisolatecontainment serviceairinModes1,2,3,and4.Specificallyf werequested Table3.6-1bechangedtoaddvalvePCR-40tolistAandvalvePA-342tolistEandtodeletevalvePA-243andablindflange(Item47)fromlistE.Attachment 2tothislettercontainsafigureanddrawingwhichshowthelocationoftheabovevalves.Figure9.8.3fromtheupdatedFSARshowsthephysicallocationofthevalves.Drawing1-2-PO-01 showstheisometric locationofthevalvePCR-40,whichwouldreplaceamanuallyoperatedvalveatthatlocation.

Upontheinitiation ofthecontainment isolation signal,thisvalveistocloseautomatically, thusproviding containment isolation.

84042b0049 840419PDRADOCK0500031bP'DR HNar'\L+~4P Mr.HaroldR.DentonAEP:NRC:086OGThisdocumenthasbeenpreparedfollowing Corporate procedures whichincorporate areasonable setofcontrolstoinsureitsaccuracyandcompleteness priortosignature bytheundersigned.

Verytrulyyours,~lM..Aexichg)VicePresident thAttachment cc:JohnE.DolanW.G.Smith,Jr.-BridgmanG.CharnoffR.C.CallenE.R.Swanson,NRCResidentInspector

-Bridgman I

DATE:February27,1984INDIANA8MICHIGANELECTRICCOMPANYOlA/ERSY5TKsUBJEcT:STP.207ReportFROM:TotA.L.TetzlaffK.S.ChapmanSTP.207I/CLowerInletDoorTestDatesandtheDatesCondition ReportsllereLlrittenUNIT1UNIT22-779-7711-776-7812-785-7910-797-8012-806-8111-812-827-823<<837-0311-831-84NoneNoneHoneN/AtoSTP.2071-4-79-176 None1-11-79-4 79IIone1-12-80-348 1-1-81-001 NoneNoneNoneNoneHoneNoneHone3-785-787-7811-785-7910-797-8011-8011-833-8110-813-828-821-836-838-8311-83N/AtoSTP.207N/AtoSTP.2072-7-78-404 2-11-78-617 2-5-79-242 NoneHoneHoneHone2-3-81-102 NoneNoneHoneNone2-06-83-527 2-07-83-614 N/AtoSTP.2072-08-83-753 NonePleaseseethefollowing pagesforanexplanation ofwhatwasdonetocorrectandpreventL.I.D.problems.

Condition Reports,Dates,Causes,andCorrective ActionCondition Report1-4-79-176 LER028Discription ofCondition/Event Uete4/10/79EventTine1515UnitAffected1Thetorquerequiredtoopenlowerinletdoor3-Rbeyond6inchesoftravelwasmeasuredtobe902in.-lbs.Theapplicable Technical Specification limitis675in.-lbs.Uponinspecting thedoor,itwasfoundthatsheetmetalscrewsalongthebottomofthedoorwererubbingagainstthesurfaceofthebottomedgeofthedoorframe.INTRASYSTEM

.PageTwoCorrective ActionTakenInitiated JONo.49689Depressed lowerinletdoor3-Rframebottomedgesurfacetoallowdoortobeopenedbeyond6inchesutilizing anopeningtorqueof328inlbs.Asaresultoftheproblemdescribed inthesubjectCondition Report,twoinspections wereconducted onApril13,1979.Thefirstinspection consisted ofobservations madeinbay3only.Thesecondinspection consisted ofobservations conducted throughout theremaining baysbasedonthersuitsofthefirstinspection conducted inbay3.Duringthefirstinspection, thefollowing observations weremade(refertoAttachment

~l):1)abrasionmarksappearedonthedoorframebottomledgewheretwoofthedoor'ssheetmetalscrewsweremakingcontactasthedoorwasopened,2)largedentsinplateBwereobserveddirectlybelowtheabrasionpointstherebysuggesting thatamechanical force,impartedonplateB,mayhaveresultedinforcingplateAupwardsandalsoincreasing thesizeofthegapbetweenplatesA5B,3)theRTVsealant,previously installed inthegapbetweenplatesAEB,wasfoundmissingtherebyallowingthepossibility ofcondensation torunfromatopplateAdownintotheinsulation tofreezeandpushplateAupwardsand4)mineralresidue,indicating condensation flowacrossplateA(fromwarmsidetocoldside)anddowntowardthegapbetweenplatesA8B,wasobserved.Duringthesecondinspection, thefollowing verification weremade:1)itwasverifiedthatnoneoftheotherdoorframebottomledgesexhibited significant damage(dents);thetypeofwhichwasfoundinbay3and2)itwasverifiedthatonlybay14(inadditiontobay3)wasmissingtheRTVsealantinthegapbetweenplatesAandB.Asaresultoftheseinspections, DaycoSheettietalInc.wasorderedtoremovebothplateAandplateBfrombays3and14toallowinspections foricebuildupintheinsulation.

Aftertheplateswereremoved,itwasverifiedthattheinsulation inbay3washeavilyloadedwithice.Theinsulation in.bay14,however,revealednoevidenceofwateroricebuildup.Basedohtheobservations madeduringtheseinspections, itisapparentthatdoor3-RplateAwasforcedupwards(andincontactwiththedoor'ssheetmetalscrews)asaresultofacwbination ofmechanical impacttransmitted fromplateBandinsulation expansion asaresultoffreezingcondensation.

Duringtheinsulation, itbecameobviousthatnotonlydidtheblowstoplashBforceplateAupwardsbutalsoresultedinwideningthegapbetweenplatesA8Bwhichresultedinahighprobability ofincreasing condensation flowintotheinsulation.

PageThree~Uponccmpleting theinspections described intheattachedinvestigation report,DaycoSheettietalInc.replacedallofthefrozeninsulation alongthebay3doorframebottcmledgeandplatesAEBwerereinstalled inbothbay3andbay14.Inaddition, RTVsealantwasinstalled alongtheentirelengthofthegapbetweenplatesA8Binbothbays.TheRTVsealantisconsidered apermanent fixinprohibiting condensation flowdownthroughthegapandintotheinsulation.

Toverifythatanadequateclearance betweenthesheetmetalscrewsandplateAexistedafterthecompletion oftherepairstobays3and14,thefollowing initialopeningtorquemeasurements weremade:~BaIl~tliFL1A~T3314148.5LBS8.5LBS9.5LBS9.0LBS41IN41IN41IN41IN348INLBS348INLBS309INLBS369INLBS*Technical Specification maximumacceptable torqueis675INLBS.Tocompletely eliminate thepossibility ofthisprobleminthefuture,aRFChasbeenwrittentoreplacethehorizontal plateAwithaplatethatwouldslopedowninthedirectionasshowninAttachment

¹2.Theslopingfeatureofthethisplatewouldprovideasignificantly greaterclearance betweentheplateandthedoor'ssheetmetalscrews.Thegreaterclearance willallowplateBtoabsorbimpactwithoutcausingplantAtointerfere withthedoor'sopeningtravel.ItisplannedtoinstalltheRFCineachunitduringeachunit'upcomingrefueling outage.(Thishasbeencanpleted)

Inanattempttodetectanydamagetothedoorsthatwouldresultinanincreaseinthedoor's.openingtorque,theinitialopeningforcewillbere-measured justpriortopowerescalation attheendofeveryicecondenser basketweighingproject.Thisinvestigation wasdonebyK.A.Tonerthy3,1979LER79-028EventDescription AndProbableConsequences:

Whileperforming aroutinesurveillance testitwasdiscovered thatthetorquerequiredtoopenlowericecondenser inletdoor3-Rexceededthelimitidentified underT.S.3.6.5.3.CauseDescription AndCorrective Actions:Thesheetmetalscrewslocatedalongthebottomofthedoorwerediscovered toberubbingagainstthesurfaceattheedgeofthedoorframerequiring excessive forcetoopenthedoor.Thedoorframeedgewasdepressed toallowproperclearance, andaretestwasperformed withsatisfactory results.(see supplement)

SUPPLEt1ENT TOLER¹79-028/03L-0 SUPPLEHENT TOCAUSEDESCRIPTION Following aninspection oftheremaining icecondenser doorsforsimilarproblems, adesignchangewassubmitted tochangethepositioning ofthelowerinletdoorframestoallowagreaterclearance betweenthedoorandframe.

'yIIiIIiil~~IIIIIIII.'r8<irl<DI~III'iVn'r?f-Ao~~Mc<Co~rI+ufl'~gg//o/g/II~FZoPvtl(gUcSPlOPbralpXrrr5a4Q)DC)I(--~I~C<IC&rrrr>~It&~

~CO4+IIAlba)XfrPICrigjFAVrlArr"4(lA79rI)III:IeIIIgdCal~Z<rtrC.PQooW~~,~II'IIrIICA/TW>~4io4~AJAp~Zo~~SAxrg4wCCga,l4r(Pgoo+~+<~regS'cA,9:;gguccrrrs~i

~ChilepIoar>lrr'+iIII~IIIIIr~~rl'://'I'/'1/'/

llr'7I'~ry~.-yrrrran.~(gr~nC.a)04JClI'C>

/Ir~.lIIl.IiII..III~gilS'SI.~Iigirl~III~err.err,rr'/a47E/1+JCrarsMPrrN~r/~rII~,,IIk(orrdcv8=r~Mnl;MCCOY>~oPuIvrJ'<rI+>r>o

.~~y/d&Cro4Od5tWiAC,DC,<.(+<<r~8):~~~IgWrSWMSHC4;v.+gradrIiI~~I~~t PageFourC.R.¹1-11-79-479 LER¹79-056InvestiationReortCR1-11-79-479 Evaluation ofthetestdatatakenduringtheperformance ofTHP4030STP.207revealedthattheopeningtorquelimitof195in-lbswasexceededonlyonlowerinletdoors17L521R.Examination ofpastdatatakenontheUnit1lowerinetdoorsshowsthatthedoorsinbays17and21havebeenaprobleminthepast.Thesedoorshavealwaystestednearorslightlyabovethelimitof195in-lbs.Itseenslikelyfromthisdatathatthespringsusedintheseparticular doorsmightbeslightlystifferthanthoseinthedoorsinotherbays.Thespringtensionadjustment boltsonthesedoors(bays17821)arenowbackedouttotheirlimitandthedooropeningtorquesarebelowthelimitbutonlyslightly, soasapermanent solutioneitherthespringsshouldbereplacedorthespringtensionadjustment boltsshouldbereplacedwithlongerbolts.Preventative Action:AnRFChasbeenwrittentoreplacethespring>adjustment boltsinordertorelievethespringtensiononthoselowerinletdoorswhichhavehighopeningtorquevalues(RFC12-1762).

(Thishasbeencompleted)

LER¹79-056SUPPLEl1ENT TOCAUSEDESCRIPTIOH Adesignchangehasbeeninitiated toreplacethespringadjustment boltswithlongerboltsinordertorelievethespringtensiononthelowerdoors,(RFC12-1762).

(Thishasbeencompleted)

Thedoorswereimmediately readjusted whentheproblemwasfoundandnoactionwasrequiredbyTechnical Specifications

.C.R.¹1-12-80-340 LER80-028Insulation slippeddowncausing2doorstofailwhentesting25KofdoorsperTechnical Specification 4.6.5.3-1-b.

Bay18Bay3hingefrictionwasfoundexistingperTechnical Specification 4.6.5.3.l-b5.

Corrective ActionTaken:Initiated JONo.59677Emergency RFC01-1819waswrittentoreplaceslippedinsulation.

J.O.59677waswrittentomakedoorrepairs.DaycoSheettletalCompanywasassignedthejobforraisingtheinsulation andaddingsheetmetalscrewstoholditinplaceonthedoorjams.AllbayswererepairedperRFC01-1819,andretestedper12THP4030STP.207foropeningandclosingtorqueandhingefriction.

Alldoorswerethenacceptable, meetingallTechnical Specifications.

J.O.nmber59684hasbeenwrittentochecktheUnit2lowerinletdoorsduringthenextoutageinAprilof1981.(Thishasbeencompleted)

PageFiveTheexactfailurenechnismwasnotdeternined duetounitstarttimeconstraints.

Doorremovalwouldhavebeennecessary todetermine exactfailure'mode.

Twomodesarethoughttobepossible; 1-Failureofthe3-MScotchGrip134adhesiveduetoagefatiguing.

Notemperature rangeoftheadhesivecouldbedetermined.

Westinghouse Drawing81139E97.

2-Shearingofthepouriousinsulation blockscausingfailureofthemetaltoinsulation bond.Writtenby:ArtTetzlaffLER80-28CauseDescription AndCorrective Actions:Theinsulation aroundthetwodoorswasfoundtobeslippinginthedownwarddirection.

Therubbingbetweenthedoorsandtheinsulation atthisinterface wasthecauseoftheexcessive torque.Bydesign,theinsulation isbondedtothemetalbyanadhesiveanditwasthisbondthatfailed.AnEmergency designchangewasissued(RFC01-1819)toaddsheetmetalscrewstotheinsulation onallthelowerdoors.ThiswasdoneandalldoorsweretestedandfoundtomeetTechnical Specifications.

AJobOrderhasbeenwrittentochecktheUnit2lowericecondenser doorinsulation duringthenextrefueling outage.Note:ThiswasdoneonUnit2Writtenby:ArtTetzlaffC.R.81-1-81-001 NoLERDescription ofCondition:

Bays2,3,4,5,14,18,20,21,22hadpincotterkeysmissing.Thesubjectpinsattachedthelowerinletdoorspringstothedoor.Corrective ActionTaken:Initiated JONo.59776JobOrderwrittentoinstallallcotterkeyswillbeinstalled beforeUnit1startup.JobOrder59776waswrittentohaveDaycoSheetHetalCo.reinstall themissingcotterpins.AllmissingpinswerereplacedandcheckedinplacebeforetheUnit1start-up.

RFC1-2-1762wascanpleted onUnit1lowerinletdoorsduringthe1900Refueling Outage.ThisRFCchangedthedoorspringadjusters togivemorespringadjustment.

Itisbelievedthecotterpinswereleftoutatthistime.Becausethedoorspringpinsareheldinbygravity,atnotimewerethelowerdoorsinoperable duetothemissingcotterpins.Itisrecanmended thatsubjectCondition Peportbereclassified

'E'.Remarks:TheoriginalCondition Reportwaslostandthisnewreportwascaopleted on3-30-81Writtenby:ArtTetzlaff3-30-84 PageSixC.R.82-7-78-404 LER78-057Description ofCondition:

WhilerunningSTP.207IceCondenser LowerInletDoorsDoors1-Rand14-Lexceedtheacceptance criteriaof675inchpoundsforcetoopenthedoor.Corrective ActionTaken:Smoothedoutroughspotsondoorframes.Whenretested, thedoorshadanopeningforceof613.2(1-R)and567inchpounds(14.L)whichfallwithintheacceptance criteriaasstatedinSTP.207.Investigation Report:Allthedoorswerecheckedforotherroughspots,butnonewerefoundasnotedinSTP.207.Whenrechecked, doors1-Rand14-Lwerefoundtobeinspec.LER78-057Duringasurveillance testontheicecondenser lowerinletdoors,doors1-Rand14-Lexceededtheinitialopeingtorquespecified byT.S.4.6.5.3.1.b.l CauseDescription andCorrective ActionsInvestigation revealedthatthedoorsealswerecatchingonroughspotsonthedoorframes.TheseroughspotsweresmoothedandthedoorswereretestedwiththeinitialopeningforcemeetingtheTechnical Specification requirements.

Allotherdoorswerecheckforsimilarroughareas,nonewerefound.CR02-11-78-617 LERNoneDescription ofCondition:

InletdoorNo.9.Lstuckabout,2"openandexceededthe675in-lbstorquetoopen.Corrective ActionTakenJobOrderWrittenInvestigation Report:Initiated JOHo.04092Baydoor'9Lwouldnotopnmorethan2incheswithoutexcessive force.AJobOrderwaswrittentorepair.Thedoorwasfoundtohaveasmallicebuild-upprobablyfromthedefrostcompleted severaldaysprior.Asatisfactory retestwascanpleted.

Allotherdoorswerefoundinspec.

PageSevenPreventive ActionTakenInitialopenningforceforSTP.207iscompleted priortoanyicecondenser defrostactivity.2-5-79-242 LERNoneDescription ofCondition THP4030STP.207step5.1.11IceCondenser doorannunciator doesnotalarminthecontrolrocm.SVpaneldrop94.Contrarytotherequirements ofTS4.6.5.3.1.

Writtenby:BillGillettCorrective ActionTakenJobOrdertocorrectcondition C.R.82-5-79-242 Initiated JONo.10800,Investigation intothecauseofthealarmfailurerevealedthattheannunciator cardfortheicecondenser dooralarmhadfailed.Thecardwasreplacedandtheannunicator testedforproperoperation.

Step5.1.11wasperformed againandproperindication inthecontrolrocmwasreceived.

WrittenBy:B.Hullinger Thisfailurewasonlytheaudiblealamfunction, allindicating lightsfunctioned properlyperB.Gillett.WrittenBy:J.L.Rischling 2-3-81-102 C.R.LERO'oneItemreportedonUnit2lowericecondenser inletdoorspringsDescription ofCondition Bay9lefttopdoorspringshavetwocotterpinsmissing.Themissingcotterpinsdidnotaffectdooroperation.

WrittenBy:ArtTetzlaffJ.O.59684waswrittentocheckcotterkeysonUnit2duringt".arch1981refueling outageperCondition Report1-2-810'1-1-81-001.

All,baydoors1-24werechecked3-20-81,bay9topleftdoorspringcotterpinswerefoundmissing.Thisdidnoteffectdooroperation inanyway.J.O.07232waswrittenon3-20-81toreplacethemissingcotterpins.Pinswerereplaced3-21-81.WrittenBy:ArtTetzlaff PageEightItcouldnotbedetermined whathappenedtothemissingcotterkeysorifanywereeverinstalled.

WrittenBy:J.L.Rischling C.R.02-6-83-527 LER883-056ItemReportedOnUnit2IceCondenser LowerInletDoorsDescription ofCondition Whileperforming lowerinletdoortest(**12THP4030STP.207),

door3Lofbay3didnotmeettheacceptance criteriaofinitialopeningtorquesof<675in.lbs.Thedoorrequired912inlbs.toopen.WrittenBy:fl.J.StarkImmediate ActionTaken:Thedoorwasinspected visuallyitwasdetermined thatthedoorsealwasdirtywhichcausedthedoortostickinitially.

AJobOrderwaswrittentohavethedoorsandsealscleaned.WrittenBy:ti.J.StarkInvestiationReortCR82-06-83-527 Theicecondenser lowerinletdoorsurveillance test12THP4030STP.207wasperformed onJune24,1983tosatisfyTechnical Specification 4.6.5.3.1.

TheleftdoorofBaythreefailedtheinitialopeningtorquelimitof<675in-lbs.Thedoorrequiredatorqueof912in-lbstoopen.Thedoorhinges,andframesealswerevisuallyinspected totrytodetermine theproblem.Theproblemwastheresultoftheframesealsinitially stickingtothedoorbecauseofglycolontheseals.Thedoorwaslinedtocontactthesealsasdesigned.Preventive ActionAJobOrderwaswrittentohavethedoorsealsrepairedorreplaced(JobOrder12967).Uponvisualinspection, itwasdetermined thatcleaningofthesealswould.eliminate theproblem.Thesealswere'cleaned andthedoorretes'ted

.July5,1983.Thedoorsatisfied theTechnical Specification limitof<675in-lbs.Nofurtherpreventive actionisplannedatthistine.Note:Sealsarecleanedaftereveyicecondenser basketweighing.WrittenBy:ti.J.Stark

~PageNineLER83-056Duringsurveillance testingontheicecondenser lowerinletdoors,itwasfoundthatdoor3Lofbay33xceededthemaximumallowable torquelimitoflessthanorequalto675inchpoundsrequiredtoinitially openthedoor.Thiseventisnon-conservative withrespecttoTechnical Specification 4.6.5.3.1;b.l.

Theaction,requirements weremet.Publichealthandsafetywerenotaffected.

Thisisthefirstoccurrence ofthistype.CauseDescription andCorrective ActionsInvestigation foundtheproblemwastheresultoftheframesealsinitially stickingtothedoorbecauseofglycolbeingontheseals.Theframesealswerecleanedandthedoorwasretestedsatisfactorily.

Nofutheractionisplannedatthistimesincethisisthefirstoccurrence associated withglycol.C.R.¹2-08-83-753 LER83-003ItenReportedOnSTP.207LowerInletDoorTestDescription ofCondition Thefollowing conditions werefoundduringthetest:Bay1,Leftdoorstuckatabout4"open*'ay3,Rightdoorexceeded675"poundsBay10,Leftdoorstuckatabout4"open-36"toopenBay13,RightdoorclosedRTDcable.Bay14,Rightdoorwouldnotopenpast4"Bay18,RTDstringloose-Droppedabout10'mmediate ActionTaken:WrittenBy:W.T.GillettInitiated JONo.12977513127JobOrdertof1aintenance torepairdoorsJobOrdertoControlsandInstrumentation torepairRTDstringWrittenBy:W.T.GillettInvestigation ReportCR¹2-08-83-753 Illh'ileconducting STP-207("LowerInletDoorTest"),Unit2,fivedoorswerefoundthatexceededthe675inch-pound openingtorquerequiredbyTechnical Specification 3.6.5.3.Inbay-13therightdoorwasclosedonalooseRTDcable.Thecablewasremovedfronthedoorandtie-wrapped upoutoftheway.Thedoorwasretestedsatisfactorily.

1~

~Q~~.,PageTenBay-1leftdoor,bay-10leftdoor,andbay-14rightdoor,allexceededthe675inch-pound Technical Specification limit.JobOrder12977wassenttoMaintenance torepairthedoors.Maintenance foundthedoorstobestickingatthetop.Theymovedthedoorframetoprovidethenecessary gap.Thedoorswereretestedsatisfactorily.

Bay-3'srightdoorexceededtheopeningforceof675inch-pounds.

Thedoorwasinspected andthesealswerecleaned.Thedoorwasretested.satisfactorily.

Inbay-18hnRTDstringhaddroppedabouttenfeet.TheRTDstringwaspulledupandattachedtotheicecondenser framework, asperC8IJobOrdernunber13127.Preventive ActionC.R.2-08-83-753 Changesheetwaswrittento**12THP4030STP.211,"IceBasketWeighing."ThisTPwillinsurethatalldoorsarefreefromobstruction following anicebasketweighingproject.ThisTPalsoinsuresthedoorsealsandsealingsurfacesarefreefromdebristhatcouldcausebinding.ThisT.P.hasbeenincorporated intotheicebasketprocedure intherecentrevision.

WrittenBy:K.S.Chapman/W.

T.GillettLER803-083Duringperfornance oftheicecondenser lowerinletdoorssurveillance test,itwasfoundthatfivedoorsexceededthemaximuminitialopeningforcespecifications.

Thiseventwasnon-conservative withrespecttoTechnical Specification 4.6.5.3.l.b.

Theactionrequirements weremet.PublicHealthandSafetywerenotaffected.

Previousoccurrences ofasimilarnatureincluded:

050-315/75-069,76-001,024,030i038,70-028$052,83-002,316/78-057,83-056.CauseDescription andCorrective Actions:Investigation revealedthatthree(3)ofthedoorsrequiredadjustments tothedoorframe.OnedoorwasfoundtobeclosedonalooseRTDcable.Thecablewasremovedandsecuredawayfromthedoor.Theremaining doorwasinspected andthesealswerecleaned.Thedoorswereretestedsatisfactorily.

(SeeLowerSupplement)

Attachment toLER¹SulenenttoCauseDescritionInvestigation revealedthatthree(3)ofthedoorsrequiredadjustments tothedoorframe.OnedoorwasfoundtobeclosedonalooseRTDcable.Thecablewasremovedandsecuredawayfromthedoor.Theremaining doorwasinspected andthesealswerecleaned.Thedoorswereretestedsatisfactorily.

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