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| {{#Wiki_filter:.~REGULA'J;ORY INFORMATION DISTRIBUTIO SYSTEM(RIDS)ACCESSION NBR:9812080045 DOC.DATE: | | {{#Wiki_filter:.~REGULA'J;ORY INFORMATION DISTRIBUTIO SYSTEM (RIDS)ACCESSION NBR:9812080045 DOC.DATE: 98/12/03 NOTARIZED: |
| 98/12/03NOTARIZED: | | YES lACIL:50-315 Donald C.Cook Nuclear Power Plant, Unit 1, Indiana M 50-3).6 Donald C.Cook Nuclear Power.Plant, Unit 2;Indiana M AUTH A'fAME"-AUTHOR AFFILIATION POWERS,R.P. |
| YESlACIL:50-315 DonaldC.CookNuclearPowerPlant,Unit1,IndianaM50-3).6DonaldC.CookNuclearPower.Plant,Unit2;IndianaMAUTHA'fAME"-AUTHORAFFILIATION POWERS,R.P.
| | Indiana Michigan Power Co.RECIP.NAME RECIPIENT AFFILIATION Records Management Branch (Document Control Desk)DOCKET¹05000315 05000316 |
| IndianaMichiganPowerCo.RECIP.NAME RECIPIENT AFFILIATION RecordsManagement Branch(Document ControlDesk)DOCKET¹0500031505000316
| |
|
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| ==SUBJECT:== | | ==SUBJECT:== |
| Application foramendstolicensesDPR-58EDPR-74,revising TS4.6.5.1,"IceCondensedr,Ice Bed"Sassociated basestoreflectmaxicecondenser flowchannelblockageassumedinaccidentanalyses. | | Application for amends to licenses DPR-58 E DPR-74,revising TS 4.6.5.1,"Ice Condensedr,Ice Bed" S associated bases to reflect max ice condenser flow channel blockage assumed in accident analyses.DISTRIBUTION CODE: AOOID COPIES RECEIVED:LTR I ENCL I SIZE: TITLE: OR Submittal: |
| DISTRIBUTION CODE:AOOIDCOPIESRECEIVED:LTR IENCLISIZE:TITLE:ORSubmittal: | | General Distribution NOTES: RECIPIENT ID CODE/NAME PD3-3 LA STANG, J COPIES LTTR ENCL 1 1 1 1 RECIPIENT ID CODE/NAME PD3-3 PD COPIES LTTR ENCL 1 1 0 INTERN.FIL CE NRR DE/EMCB NRR/DSSA/SPLB NUDOCS-ABSTRACT EXTERNAL: NOAC 1 1 1 1 1 1 1 1 1 1 I I NRR/DE/ECGB/A NRR/DRCH/HICB NRR/DSSA/SRXB OGC/HDS3 NRC PDR 1 1 1 1 1 1 1 0 1.1 D NOTE TO ALL"RZDS" RECIPIENTS: |
| GeneralDistribution NOTES:RECIPIENT IDCODE/NAME PD3-3LASTANG,JCOPIESLTTRENCL1111RECIPIENT IDCODE/NAME PD3-3PDCOPIESLTTRENCL110INTERN.FILCENRRDE/EMCBNRR/DSSA/SPLB NUDOCS-ABSTRACT EXTERNAL:
| | PLEASE HELP US TO REDUCE WASTE.TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTR1BUTZON LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD)ON EXTENSION 415-2083 TOTAL NUMBER OF COPIES REQUIRED: LTTR 13 ENCL 12 |
| NOAC1111111111IINRR/DE/ECGB/A NRR/DRCH/HICB NRR/DSSA/SRXB OGC/HDS3NRCPDR111111101.1DNOTETOALL"RZDS"RECIPIENTS:
| | .3 Indiana Michlga~Power Company~500 Circle Drive Buchanan, Ml 491071373ÃIRON MA NICHIGAM P8lfM December 3, 1998 AEP:NRC: 09000 Docket Nos.: 50-315 50-316 U.S.Nuclear Regulatory Commission ATTN: Document Control Desk Mail Stop 0-Pl-17 Washington, DC 20555-0001 Gentlemen: |
| PLEASEHELPUSTOREDUCEWASTE.TOHAVEYOURNAMEORORGANIZATION REMOVEDFROMDISTR1BUTZON LISTSORREDUCETHENUMBEROFCOPIESRECEIVEDBYYOUORYOURORGANIZATION, CONTACTTHEDOCUMENTCONTROLDESK(DCD)ONEXTENSION 415-2083TOTALNUMBEROFCOPIESREQUIRED:
| | Donald C.Cook Nuclear Plant Units 1 and 2 TECHNICAL SPECIFICATIONS CHANGE REQUEST ICE CONDENSER FLOW CHANNELS Indiana Michigan Power Company, the Licensee for Donald C.Cook Nuclear Plant units 1 and 2, proposes to amend Appendix A, technical specifications (T/S),'f facility operating licenses DPR-58 and DPR-74 pursuant to 10 CFR 50.90.The Licensee proposes to revise T/S 4.6.5.1,"Ice Condenser, Ice Bed," and its associated bases to reflect the maximum ice condenser flow channel blockage assumed in'the accident analyses.Attachment 1 provides a detailed description and safety analysis of the proposed changes.Attachments 2A and 2B provide marked up T/S pages for unit 1 and unit 2, respectively, Attachments 3A and 3B provide the proposed T/S pages with the changes incorporated for unit 1 and unit 2, respectively. |
| LTTR13ENCL12
| | Attachment 4 describes the evaluation performed in accordance with 10 CFR 50.92(c), which concludes that no significant hazards consideration is involved.Attachment 5 provides the environmental assessment. |
| .3IndianaMichlga~PowerCompany~500CircleDriveBuchanan, Ml491071373 | | The proposed changes have been reviewed by the plant nuclear safety review committee and by the nuclear safety and design review committee. |
| ÃIRONMANICHIGAMP8lfMDecember3,1998AEP:NRC:09000DocketNos.:50-31550-316U.S.NuclearRegulatory Commission ATTN:DocumentControlDeskMailStop0-Pl-17Washington, DC20555-0001 Gentlemen: | | 98f2080045 98f203 PDR, ADOCK 05000815 P'DR U.S.Nuclear Regulatory Commission Page 2 AEP:NRC: 09000 Copies of this letter and its attachments are being transmitted to the Michigan Public Service Commission and Michigan Department of Public Health, in accordance with the requirements of 10 CFR 50.91.Sincerely, R.P.Powers Vice President SWORN TO AND SOBSCRIBED BEFORE ME THIS~i DAY OF)i I/I 1998 Notary Public My Commission Expires/jmc~ANiCE M.BiGKERS Attachments |
| DonaldC.CookNuclearPlantUnits1and2TECHNICAL SPECIFICATIONS CHANGEREQUESTICECONDENSER FLOWCHANNELSIndianaMichiganPowerCompany,theLicenseeforDonaldC.CookNuclearPlantunits1and2,proposestoamendAppendixA,technical specifications (T/S),'ffacilityoperating licensesDPR-58andDPR-74pursuantto10CFR50.90.TheLicenseeproposestoreviseT/S4.6.5.1,"IceCondenser, IceBed,"anditsassociated basestoreflectthemaximumicecondenser flowchannelblockageassumedin'theaccidentanalyses.
| | ~@8Fob o Be+on CoNIQ, M My Commission Expires Feb.16,2001 c: J.A.Abramson, w/attachments J.L.Caldwell, w/attachments MDEQ-DW&RPD, w/attachments NRC Resident Inspector, w/attachments J.R.Sampson, w/attachments U.S.Nuclear Regulatory Commission Page 3 AEP:NRC: 09000 bc: T.P, Beilman, w/attachments J.J.Euto B.J.Hickle G.Homna FOLIO, w/attachments D.F.Kunsemiller/J. |
| Attachment 1providesadetaileddescription andsafetyanalysisoftheproposedchanges.Attachments 2Aand2BprovidemarkedupT/Spagesforunit1andunit2,respectively, Attachments 3Aand3BprovidetheproposedT/Spageswiththechangesincorporated forunit1andunit2,respectively. | | BE Kingseed/G. |
| Attachment 4describes theevaluation performed inaccordance with10CFR50.92(c), | | P.Arent/M.J.Gumns M.W.Rencheck/E. |
| whichconcludes thatnosignificant hazardsconsideration isinvolved.
| |
| Attachment 5providestheenvironmental assessment. | |
| Theproposedchangeshavebeenreviewedbytheplantnuclearsafetyreviewcommittee andbythenuclearsafetyanddesignreviewcommittee.
| |
| 98f2080045 98f203PDR,ADOCK05000815P'DR U.S.NuclearRegulatory Commission Page2AEP:NRC:09000Copiesofthisletteranditsattachments arebeingtransmitted totheMichiganPublicServiceCommission andMichiganDepartment ofPublicHealth,inaccordance withtherequirements of10CFR50.91.Sincerely, R.P.PowersVicePresident SWORNTOANDSOBSCRIBED BEFOREMETHIS~iDAYOF)iI/I1998NotaryPublicMyCommission Expires/jmc~ANiCEM.BiGKERSAttachments | |
| ~@8FoboBe+onCoNIQ,MMyCommission ExpiresFeb.16,2001c:J.A.Abramson, w/attachments J.L.Caldwell, w/attachments MDEQ-DW&RPD,w/attachments NRCResidentInspector, w/attachments J.R.Sampson,w/attachments U.S.NuclearRegulatory Commission Page3AEP:NRC:09000bc:T.P,Beilman,w/attachments J.J.EutoB.J.HickleG.HomnaFOLIO,w/attachments D.F.Kunsemiller/J. | |
| BEKingseed/G.
| |
| P.Arent/M.J.GumnsM.W.Rencheck/E. | |
| R.Eckstein/D. | | R.Eckstein/D. |
| F.Powell/D. | | F.Powell/D.R.Hafer/K.R.Baker J.F.Stang, Jr.,-NRC Washington, DC, w/attachments ATTACHMENT 1 TO AEP:NRC: 09000 DESCRIPTION AND SAFETY ANALYSIS FOR PROPOSED CHANGES Attachment 1 to AEP:NRC: 09000 Page 1 Descri tion and Safet Anal sis for the Pro osed Chan es A.Summary of Proposed Changes The Licensee proposes to revise technical specification (T/S)4.6.5.1.b.3 and 4.6.5.1.c,"Ice Condenser, Ice Bed," and its associated bases for Donald C.Cook Nuclear Plant units 1 and 2.The proposed change would revise the surveillance for ice condenser flow channels to provide a more conservative sampling approach for initially assessing the potential for flow channel blockage and to impose specific criteria for assessing the extent and significance of any observed blockage when compared to the maximum blockage allowed by analysis.This criteria is not adequately defined in the current surveillance. |
| R.Hafer/K.R.BakerJ.F.Stang,Jr.,-NRCWashington, DC,w/attachments ATTACHMENT 1TOAEP:NRC:09000DESCRIPTION ANDSAFETYANALYSISFORPROPOSEDCHANGES Attachment 1toAEP:NRC:09000Page1DescritionandSafetAnalsisfortheProosedChanesA.SummaryofProposedChangesTheLicenseeproposestorevisetechnical specification (T/S)4.6.5.1.b.3 and4.6.5.1.c, "IceCondenser, IceBed,"anditsassociated basesforDonaldC.CookNuclearPlantunits1and2.Theproposedchangewouldrevisethesurveillance foricecondenser flowchannelstoprovideamoreconservative samplingapproachforinitially assessing thepotential forflowchannelblockageandtoimposespecificcriteriaforassessing theextentandsignificance ofanyobservedblockagewhencomparedtothemaximumblockageallowedbyanalysis. | | Additionally, the surveillance will be changed to utilize the term flow channel (vice flow passage)to be consistent with corresponding T/S 3.6.5.1.b. |
| Thiscriteriaisnotadequately definedinthecurrentsurveillance.
| | Information currently located in 4.6.5.1.b.3, involving areas not considered to be a flow"channel," is relocated to T/S 4.6.5.1.c. |
| Additionally, thesurveillance willbechangedtoutilizethetermflowchannel(viceflowpassage)tobeconsistent withcorresponding T/S3.6.5.1.b. | | Finally, the bases are revised to define a flow channel and the reason for the maximum allowable blockage.The current bases provide no information related to flow channel blockage.The proposed changes are described in detail in section E of this attachment. |
| Information currently locatedin4.6.5.1.b.3, involving areasnotconsidered tobeaflow"channel," | | T/S pages that are marked to show the proposed changes are provided in attachments 2A and 2B for unit 1 and unit 2, respectively. |
| isrelocated toT/S4.6.5.1.c.
| | The proposed T/S pages with the'changes incorporated are provided in attachments 3A and 3B for unit 1 and unit 2, respectively. |
| Finally,thebasesarerevisedtodefineaflowchannelandthereasonforthemaximumallowable blockage. | | B.Description of the Current Requirements T/S surveillance requirement 4.6.5.1.b.3 requires an inspection every 18 months to confirm that flow passages (top deck floor grating, intermediate deck and flow passages between ice baskets and past lattice frames)in each ice condenser bay have not accumulated frost or ice exceeding a nominal thickness of 3/8 of an'inch.This is accomplished by visual inspection of at least two flow passages per bay.Exceeding the criteria for either selected passage requires visual inspection of an additional 20 representative passages.More than one restricted flow passage per bay is evidence of abnormal degradation of the ice condenser. |
| Thecurrentbasesprovidenoinformation relatedtoflowchannelblockage.
| | Surveillance requirement 4.6.5.1.c requires a similar assessment of the lower inlet plenum support structures and turning vanes.C.Bases for the Current Requirements No bases are provided for the current surveillance requirements. |
| Theproposedchangesaredescribed indetailinsectionEofthisattachment.
| | However, it is clear that the approach was based on the assumption that frost and ice buildup would be fairly uniform throughout each bay of the ice condenser. |
| T/Spagesthataremarkedtoshowtheproposedchangesareprovidedinattachments 2Aand2Bforunit1andunit2,respectively. | | Therefore, inspection of a few flow channels would provide a good indication of overall conditions in that bay, constituting the basis for acceptance or 0 I Attachment 1 to AEP:NRC: 09000 Page 2 indicating the need for additional inspection/evaluation of ice condenser conditions. |
| TheproposedT/Spageswiththe'changesincorporated areprovidedinattachments 3Aand3Bforunit1andunit2,respectively.
| | A criterion to resolve"indications of abnormal degradation" was not provided in the surveillance or the bases.D.Need for Revision of the Requirement The Licensee is submitting this amendment to T/S surveillance 4.6.5'.b.3 and 4.6.5.1.c, to: i.address the potential for non-uniform accumulation of frost/ice within the ice condensers by increasing the sample size to selectively include areas where operating experience has shown increased accumulation; ii.provide a specific numerical acceptance criteria (based on analysis)for assessing"indications of abnormal degradation" in flow channels;iii.clarify the term flow"channel" and consistently utilize it in surveillance 4.6.5.1.b.3. |
| B.Description oftheCurrentRequirements T/Ssurveillance requirement 4.6.5.1.b.3 requiresaninspection every18monthstoconfirmthatflowpassages(topdeckfloorgrating,intermediate deckandflowpassagesbetweenicebasketsandpastlatticeframes)ineachicecondenser bayhavenotaccumulated frostoriceexceeding anominalthickness of3/8ofan'inch.Thisisaccomplished byvisualinspection ofatleasttwoflowpassagesperbay.Exceeding thecriteriaforeitherselectedpassagerequiresvisualinspection ofanadditional 20representative passages. | | because this term is used in the corresponding T/S LCO 3.6.5.1b;and iv.remove from T/S 4.6.5.1.b.3. |
| Morethanonerestricted flowpassageperbayisevidenceofabnormaldegradation oftheicecondenser.
| | the discussion of ice condenser areas not comprising flow channels (as utilized in the analysis of ii.above)and consolidate these areas under T/S 4.6.5.1.c where similar areas are included;E.Description of the Proposed Changes The Licensee proposes to revise T/S surveillance 4.6.5.1.b.3 to: i.require an increase in the surveillance sample size from the current 2 flow channels per ice condenser bay to 4 flow channels per bay.The additional two flow channels inspected are specified to include one in radial rows 1 (adjacent to the containment wall)and one in radial row 9 (adjacent to the crane wall);ii.in the case of discovering more than one restricted flow channel per ice condenser bay, require a 100%inspection of the bay to determine that the bay is less than 15%blocked;and iii.(and iv.)consistently utilize the term flow"channel" in lieu of flow"passage" to maintain consistency with corresponding T/S LCO 3.6.5.1b.The meaning of the term flow channel is clarified by removing mention of the top deck floor grating area and the intermediate deck area.These two areas are relocated to T/S 4.6.5.1.c where other areas important to ice condenser performance are included.The Licensee proposes to include appropriate bases for T/S 4.6.5.1.b.3 and 4.6.5.1.c consistent with the changes described in i, ii, iii, and iv above.The bases should also clarify the intent of"representative" sample of 20 additional flow channels as utilized in the T/S. |
| Surveillance requirement 4.6.5.1.c requiresasimilarassessment ofthelowerinletplenumsupportstructures andturningvanes.C.BasesfortheCurrentRequirements Nobasesareprovidedforthecurrentsurveillance requirements. | |
| However,itisclearthattheapproachwasbasedontheassumption thatfrostandicebuildupwouldbefairlyuniformthroughout eachbayoftheicecondenser. | |
| Therefore, inspection ofafewflowchannelswouldprovideagoodindication ofoverallconditions inthatbay,constituting thebasisforacceptance or 0I Attachment 1toAEP:NRC:09000Page2indicating theneedforadditional inspection/evaluation oficecondenser conditions. | |
| Acriterion toresolve"indications ofabnormaldegradation" wasnotprovidedinthesurveillance orthebases.D.NeedforRevisionoftheRequirement TheLicenseeissubmitting thisamendment toT/Ssurveillance 4.6.5'.b.3and4.6.5.1.c, to:i.addressthepotential fornon-uniform accumulation offrost/ice withintheicecondensers byincreasing thesamplesizetoselectively includeareaswhereoperating experience hasshownincreased accumulation; ii.provideaspecificnumerical acceptance criteria(basedonanalysis) forassessing "indications ofabnormaldegradation" inflowchannels; iii.clarifythetermflow"channel" andconsistently utilizeitinsurveillance 4.6.5.1.b.3.
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| becausethistermisusedinthecorresponding T/SLCO3.6.5.1b; andiv.removefromT/S4.6.5.1.b.3.
| |
| thediscussion oficecondenser areasnotcomprising flowchannels(asutilizedintheanalysisofii.above)andconsolidate theseareasunderT/S4.6.5.1.c wheresimilarareasareincluded; E.Description oftheProposedChangesTheLicenseeproposestoreviseT/Ssurveillance 4.6.5.1.b.3 to:i.requireanincreaseinthesurveillance samplesizefromthecurrent2flowchannelspericecondenser bayto4flowchannelsperbay.Theadditional twoflowchannelsinspected arespecified toincludeoneinradialrows1(adjacent tothecontainment wall)andoneinradialrow9(adjacent tothecranewall);ii.inthecaseofdiscovering morethanonerestricted flowchannelpericecondenser bay,requirea100%inspection ofthebaytodetermine thatthebayislessthan15%blocked;andiii.(andiv.)consistently utilizethetermflow"channel" inlieuofflow"passage" tomaintainconsistency withcorresponding T/SLCO3.6.5.1b.
| |
| Themeaningofthetermflowchannelisclarified byremovingmentionofthetopdeckfloorgratingareaandtheintermediate deckarea.Thesetwoareasarerelocated toT/S4.6.5.1.cwhereotherareasimportant toicecondenser performance areincluded.
| |
| TheLicenseeproposestoincludeappropriate basesforT/S4.6.5.1.b.3 and4.6.5.1.c consistent withthechangesdescribed ini,ii,iii,andivabove.Thebasesshouldalsoclarifytheintentof"representative" sampleof20additional flowchannelsasutilizedintheT/S.
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| Attachment 1toAEP:NRC:09000Page3F.BasesoftheProposedChangesInJanuary1998,adetailedinspection andmappingoftheaccumulation offrostandiceintheunit1andunit2icecondenser flowchannelswasperformed. | | Attachment 1 to AEP:NRC: 09000 Page 3 F.Bases of the Proposed Changes In January 1998, a detailed inspection and mapping of the accumulation of frost and ice in the unit 1 and unit 2 ice condenser flow channels was performed. |
| Theinspection showedthattheflowchannelsineachicecondenser bayassociated withicebasketsinradialrows1(adjacent tothecontainment wall)andradialrow9(adjacent tothecranewall)hadthemostaccumulations offrostandice.Evaluation oftheinspection resultsattributed thecondition toaslighttemperature gradientintheicecondensers resulting fromthegenerally warmercranewallandthecoolercontainment wall.Thisgradienthasbeenattributed tocausingtheincreased sublimation ratesobservedforiceinrow9baskets.Someofthemasslostduetosublimation inrow9isbelievedtomigratetocoolerregionsoftheicecondenser andshowsupinrow1asincreased frosting.
| | The inspection showed that the flow channels in each ice condenser bay associated with ice baskets in radial rows 1 (adjacent to the containment wall)and radial row 9 (adjacent to the crane wall)had the most accumulations of frost and ice.Evaluation of the inspection results attributed the condition to a slight temperature gradient in the ice condensers resulting from the generally warmer crane wall and the cooler containment wall.This gradient has been attributed to causing the increased sublimation rates observed for ice in row 9 baskets.Some of the mass lost due to sublimation in row 9 is believed to migrate to cooler regions of the ice condenser and shows up in row 1 as increased frosting.Due to the higher sublimation rates in row 9, these baskets have most frequently been subjected to ice addition activities. |
| Duetothehighersublimation ratesinrow9,thesebasketshavemostfrequently beensubjected toiceadditionactivities.
| | Ice additions to the baskets can result in ice spillage into the adjacent flow channels.This ice then becomes a potential nucleation site for frost growth and accumulation. |
| Iceadditions tothebasketscanresultinicespillageintotheadjacentflowchannels.
| | The ice condenser mapping showed that frost and ice accumulation frequently involves relatively localized areas attributed to the nucleation and growth mechanism. |
| Thisicethenbecomesapotential nucleation siteforfrostgrowthandaccumulation.
| | Due to this mechanism, the flow channels in radial rows 1 and 9 are generally not representative of the other flow channels in rows 2 through 8.To provide reasonable assurance that rows 1 and 9 are properly assessed during ice channel surveillance activities, the specification is being changed to require 1 additional sample from each radial row 1 and radial row 9 in each bay.This has the effect of biasing the sample in a conservative direction that should tend to promote sample expansion and additional evaluation utilizing the 15%blockage criteria when warranted. |
| Theicecondenser mappingshowedthatfrostandiceaccumulation frequently involvesrelatively localized areasattributed tothenucleation andgrowthmechanism.
| | The nucleation and growth mechanism is also the reason that expansion of sampling due to discovery of obstructed channels is specified to be performed in the area that the obstruction was found.This is considered more representative and conservative than randomly expanding the sample to areas not adjacent to the area of the observed obstruction. |
| Duetothismechanism, theflowchannelsinradialrows1and9aregenerally notrepresentative oftheotherflowchannelsinrows2through8.Toprovidereasonable assurance thatrows1and9areproperlyassessedduringicechannelsurveillance activities, thespecification isbeingchangedtorequire1additional samplefromeachradialrow1andradialrow9ineachbay.Thishastheeffectofbiasingthesampleinaconservative direction thatshouldtendtopromotesampleexpansion andadditional evaluation utilizing the15%blockagecriteriawhenwarranted.
| | As described in Chapter 14.3.4, Containment Integrity Analysis of the Cook Nuclear Plant Updated Final Safety Analysis Report (UFSAR), a Transient Mass Distribution (TMD)computer code was utilized for the sub-compartment analysis of the unit 1 and unit 2 containments. |
| Thenucleation andgrowthmechanism isalsothereasonthatexpansion ofsamplingduetodiscovery ofobstructed channelsisspecified tobeperformed intheareathattheobstruction wasfound.Thisisconsidered morerepresentative andconservative thanrandomlyexpanding thesampletoareasnotadjacenttotheareaoftheobservedobstruction.
| | The analysis was performed assuming a total blockage of up to 15%of the flow areas through the ice condensers. |
| Asdescribed inChapter14.3.4,Containment Integrity AnalysisoftheCookNuclearPlantUpdatedFinalSafetyAnalysisReport(UFSAR),aTransient MassDistribution (TMD)computercodewasutilizedforthesub-compartment analysisoftheunit1andunit2containments.
| | The analysis was applicable to both unit 1 and unit 2 and assessed the effects of the 15%ice condenser flow blockage on the peak differential pressure acting across the operating deck, the crane wall, and the containment shell.The analysis models the lower compartment as 6 elements and the ice condenser is modeled with 6 sections.The analysis does not perform detailed flow channel analysis, but the TMD analysis lumps the ice condenser bays with as few as 2.75 bays together.The 15%flow blockage analysis assumed a uniform ice blockage throughout the ice condenser flow paths.The basis for the TMD flow areas Attachment 1 to AEP:NRC: 09000 Page 4 includes the areas between the ends of the lattice frames and the wall panel air ducts on both the crane wall and the containment wall sides.The minimum ice condenser flow area through each bay occurs at the lattice frame support elevations and is taken to be the net open area at these support elevations. |
| Theanalysiswasperformed assumingatotalblockageofupto15%oftheflowareasthroughtheicecondensers.
| | This includes the net open area left between the crane wall and the containment wall inside surfaces, after subtracting out the areas for the ice condenser equipment at that elevation, that includes: ice baskets full of ice, lattice frame, lattice frame columns, wall panel air ducts, wall panel cradles, and other appurtenances. |
| Theanalysiswasapplicable tobothunit1andunit2andassessedtheeffectsofthe15%icecondenser flowblockageonthepeakdifferential pressureactingacrosstheoperating deck,thecranewall,andthecontainment shell.Theanalysismodelsthelowercompartment as6elementsandtheicecondenser ismodeledwith6sections.
| | This is conservative, as the minimum area would be at the lattice frame elevation, and the flow areas elsewhere would be larger.The blockage was assumed to be permanent, i.e., no credit was taken for the high energy flow of air and steam entering the ice condenser to blow out or melt accumulations of frost or ice.Additionally, the one dimensional flow model of the current TMD code does not consider the beneficial effects of cross-flow within the ice condenser. |
| Theanalysisdoesnotperformdetailedflowchannelanalysis, buttheTMDanalysislumpstheicecondenser bayswithasfewas2.75baystogether.
| | G.Impact of 0he Proposed Changes The proposed changes are required to support startup of unit 1.The ice condenser is required to be operable prior to entering mode 4.If the change is not approved, the mode change cannot be made.This submittal affects some of the same pages as submittals AEP:NRC:1319 and AEP:NRC:1291. |
| The15%flowblockageanalysisassumedauniformiceblockagethroughout theicecondenser flowpaths.ThebasisfortheTMDflowareas Attachment 1toAEP:NRC:09000Page4includestheareasbetweentheendsofthelatticeframesandthewallpanelairductsonboththecranewallandthecontainment wallsides.Theminimumicecondenser flowareathrougheachbayoccursatthelatticeframesupportelevations andistakentobethenetopenareaatthesesupportelevations.
| | AEP:NRC:1319 involves proposed changes to the ice condenser ice weight T/S and AEP:NRC:1291, involving the distributed ignition system, provides new bases pages that affect the same pages as this submittal'he T/S pages in attachments 2A, 2B, 3A, and 3B do not reflect the changes proposed in the other submittals. |
| Thisincludesthenetopenarealeftbetweenthecranewallandthecontainment wallinsidesurfaces, aftersubtracting outtheareasfortheicecondenser equipment atthatelevation, thatincludes:
| | Changes will be incorporated based on when each request is approved.H.Schedule Requirements The Licensee requests approval of this request by January 20, 1999, to meet the startup schedule.}} |
| icebasketsfullofice,latticeframe,latticeframecolumns,wallpanelairducts,wallpanelcradles,andotherappurtenances.
| |
| Thisisconservative, astheminimumareawouldbeatthelatticeframeelevation, andtheflowareaselsewhere wouldbelarger.Theblockagewasassumedtobepermanent, i.e.,nocreditwastakenforthehighenergyflowofairandsteamenteringtheicecondenser toblowoutormeltaccumulations offrostorice.Additionally, theonedimensional flowmodelofthecurrentTMDcodedoesnotconsiderthebeneficial effectsofcross-flow withintheicecondenser.
| |
| G.Impactof0heProposedChangesTheproposedchangesarerequiredtosupportstartupofunit1.Theicecondenser isrequiredtobeoperablepriortoenteringmode4.Ifthechangeisnotapproved, themodechangecannotbemade.Thissubmittal affectssomeofthesamepagesassubmittals AEP:NRC:1319 andAEP:NRC:1291. | |
| AEP:NRC:1319 involvesproposedchangestotheicecondenser iceweightT/SandAEP:NRC:1291, involving thedistributed ignitionsystem,providesnewbasespagesthataffectthesamepagesasthissubmittal'he T/Spagesinattachments 2A,2B,3A,and3Bdonotreflectthechangesproposedintheothersubmittals. | |
| Changeswillbeincorporated basedonwheneachrequestisapproved.
| |
| H.ScheduleRequirements TheLicenseerequestsapprovalofthisrequestbyJanuary20,1999,tomeetthestartupschedule.}} | |
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Supplement to Application for Amends to Licenses DPR-58 & DPR-74,replacing Correct TS Pages Inadvertently Included in 990923 Submittal.Attached Pages Also Include Appropriate Administrative Changes
ML17335A5411999-10-0101 October 1999
Application for Amends to Licenses DPR-58 & DPR-74,revising Containment Recirculation Sump Water Inventory.Calculation & non-proprietary WCAP-15302 Rept Also Encl
ML17326A1571999-09-23023 September 1999
Application for Amends to Licenses DPR-58 & DPR-74,involving Movement of Loads in Excess of Design Basis Seismic Capability of Auxiliary Bldg Load Handling Equipment & Structures
ML17326A1421999-09-17017 September 1999
Application for Amends to Licenses DPR-58 & DPR-74,to Allow Credit of Rod Cluster Control Assemblies for Cold Leg Large Break LOCA Subcriticality.Ts Pages & non-proprietary Versions of WCAP-15246 Encl.Proprietary Version Withheld
ML17326A1161999-09-10010 September 1999
Application for Amends to Licenses DPR-58 & DPR-74,revising TS Surveillance Requirement 4.4.7,TS Tables 4.4-3,3.4-1 & TS Surveillance Requirement 4.11.2.2 Re RCS & Gas Storage Tank Sampling
ML17326A0921999-08-17017 August 1999
Application for Amend to License DPR-58,to Change TS 3/4.4.5 & Bases for TS 3/4.4.5,3/4.4.6.2 & 3/4.4.8 to Remove voltage-based Repair Criteria,F* Repair Criteria & Sleeving Methodologies from Unit 1 TS & Clarify Bases Sections
ML17325B6041999-05-21021 May 1999
Application for Amends to Licenses DPR-58 & DPR-74,revising Limitations of Positive Reactivity Additions in Several TS Action Statements
ML17325B5511999-04-19019 April 1999
Application for Amends to Licenses DPR-58 & DPR-74,revising TS 3/4.8.1.2, Electrical Power Systems & Associated Bases to Provide one-time Extension of 18-month Surveillance Interval for Specific SRs
ML17335A3661998-12-0303 December 1998
Application for Amends to Licenses DPR-58 & DPR-74,adding TS for Distributed Ignition Sys
ML17335A3631998-12-0303 December 1998
Application for Amend to License DPR-58,revising TS 3/4.7.7, Sealed Source Contamination & Associated Bases to Address Testing Requirements for Fission Detectors
ML17335A3591998-12-0303 December 1998
Application for Amends to Licenses DPR-58 & DPR-74,making Administrative Changes to Remove Obsolete Info,To Provide Consistency Between Units 1 & 2,to Provide Consistency with Std Tech Specs,To Provide Clarification & to Correct Typos
ML17335A3561998-12-0303 December 1998
Application for Amends to Licenses DPR-58 & DPR-74,revising TS 4.6.5.1, Ice Condenser,Ice Bed & Associated Bases to Reflect Max Ice Condenser Flow Channel Blockage Assumed in Accident Analyses
ML17335A2631998-10-0808 October 1998
Application for Amends to Licenses DPR-58 & DPR-74,revising TS Containment Sys Bases 3/4.6.1.4 Re Internal Pressure & 3/4.6.1.5 Re Air Temp
ML17335A2761998-10-0808 October 1998
Application for Amends to Licenses DPR-58 & DPR-74,placing Tighter Restrictions on Amount of Time RWST Water Level Instrumentation Can Be Out of Svc Before Compensatory Actions Are Required
ML17335A2671998-10-0808 October 1998
Application for Amends to Licenses DPR-58 & DPR-74,revising TS 3.4.1.3, RCS - Shutdown & Associated Bases to Provide Separate Requirements for Modes 4 & 5 with Loops Filled & Mode 5 with Loops Not Filled
ML17335A2311998-09-14014 September 1998
Application for Amends to Licenses DPR-58 & DPR-74,changing Runout Limits for Safety Injection Pump to 675 Gpm Unless Pump Is Specifically Tested to Higher Flow Rate Not Exceeding 700 Gpm
ML17335A1901998-08-28028 August 1998
Application for Amend to License DPR-58,requesting Extension of SG Surveillance,Which TSs Require to Be Performed on or Before 990408,until End of Current Refuel Cycle Currently Scheduled for Mar 2000.W/assessment of SG Degradation & TSs
ML17334A7471998-06-10010 June 1998
Application for Amends to Licenses DPR-54 & DPR-78,changing Implementation Date to Reduce Boric Acid Concentration in Boric Acid Storage Sys.Attachment 1 to Ltr Contains Description of Proposed Change & Justification for Change
ML17334B7011998-03-0303 March 1998
Application for Amends to TS for Licenses DPR-58 & DPR-74, Removing Word Immediately from Unit 1 Hydrogen Recombiner Surveillance Requirement 4.6.4.2.b.4 & Revising Plants TS 3/4.6.4 Bases
ML17334B6561997-10-0808 October 1997
Application for Amends to Licenses DPR-58 & DPR-78,changing TSs 3/4.6.5 & 3/4.5.5 to Increase Both Minimum Required Ice Mass Per Ice Basket & Total Minimum Required Ice Mass. Proprietary Summary of Sump Inventory Calculations,Encl
ML17333B0431997-09-19019 September 1997
Application for Amends to Licenses DPR-58 & DPR-74,deleting Requirement for Automatic Valve Closure Feature on RHR Sys Suction from RCS
ML17333A9831997-08-11011 August 1997
Application for Amends to Licenses DPR-58 & DPR-74,allowing Filling of ECCS Accumulators W/O Declaring ECCS Equipment Inoperable
ML17335A2101997-08-0101 August 1997
Application for Amends to Licenses DPR-58 & DPR-74,deleting Wording When Secondary Steam Supply Pressure Is Greater than 310 Psig from TS
ML17333A8281997-03-26026 March 1997
Application for Amends to Licenses DPR-58 & DPR-74, Modifying TS 4.7.5.1.e.2 Which Describes Control Room Ventilation Sys Autostart Functions
ML17333A8311997-03-26026 March 1997
Application for Amends to Licenses DPR-58 & DPR-74,changing Grammatical Correction to Wording of Unit 2 TS 3.4.8,Action a for Modes 1,2 & 3 & Returning Frequency Requirement to TS 4.7.1.2.c & 4.7.1.2.d That Was Inadvertently Deleted
ML17333A7121996-12-20020 December 1996
Application for Amends to Licenses DPR-58 & DPR-74, Requesting Rev of Reactor Coolant Pump Flywheel Insp Frequency
ML17334B5941996-07-11011 July 1996
Application for Amends to Licenses DPR-58 & DPR-74,revising TS to Support Operation of Unit 2 at Increased Core Rated Thermal Power of 3,588 Mwt.Rev 1 to WCAP-14489, ...Unit 2 3,600 Mwt Uprating Program Licensing Rept Encl
ML17334B5901996-06-19019 June 1996
Application for Amend to License DPR-58,addressing Applicable Requirements of NRC GL 95-05, Voltage-Based Repair Criteria for Repair of Westinghouse SG Tubes Affected by Outside Diameter Stress Corrosion Cracking.
ML17334B5891996-06-11011 June 1996
Application for Amends to Licenses DPR-58 & DPR-74,removing TSs Certain Requirements for Administrative Controls,Related to QA Requirements,Per Administrative Ltr 96-05
ML17333A4201996-04-0808 April 1996
Application for Amends to Licenses DPR-58 & DPR-74,moving TS 4.0.4 Exemption Statement for MSSVs Into Section 4.7.1.1
ML17333A3551996-03-12012 March 1996
Application for Amend to License DPR-74,removing TSs Re Shutdown & Control Rod Position Indication While in Modes 3, 4 & 5
ML17334B5751996-02-29029 February 1996
Application for Amends to Licenses DPR-58 & DPR-74,revising TS to Reduce Boric Acid Concentration in Boric Acid Storage Sys from Approx 12 Percent to Approx 4 Percent by Weight. Technical Rept Presenting Justificaion for Changes Encl
ML17334B5741996-02-26026 February 1996
Application for Amends to Licenses DPR-58 & DPR-74,modifying TS 5.6.2 to Increase Current Limit on Nominal Fuel Assembly Enrichment for New,Westinghouse - Fabricated Fuel Stored in New Fuel Storage Racks
ML17333A3201996-02-22022 February 1996
Application for Amends to Licenses DPR-58 & DPR-74,proposing to Remove Requirement That Operations Superintendent Must Hold or Have Held Sol at Plant or Similar Reactor
ML17333A3151996-02-22022 February 1996
Application for Amends to Licenses DPR-58 & DPR-74,modifying Table 4.8-1,DG Test Schedule by Ref Rg 1.9,Rev 3 Rather than Rg 1.108,Rev 1 Criteria for Determination of Valid DG Test
ML17333A2641996-01-12012 January 1996
Application for Amends to Licenses DPR-58 & DPR-74,modifying TS Section 4.4.11 to Eliminate SR Demonstrating Operability of Emergency Power Supply for Pressurizer PORVs & Block Valves
ML17333A2391995-12-19019 December 1995
Application for Amends to Licenses DPR-58 & DPR-74,modifying TS 3/4.6.1.2,3/4.6.1.3,3/4.6.1.6 & 3/4.6.1.6 to Require Types A,B & C Tests (Overall Integrated & Local Containment Leakage Rate) to Be Performed Per 10CFR50,App J Option B
ML17332B0111995-11-10010 November 1995
Application for Amends to Licenses DPR-58 & DPR-74,revising Ts,By Modifying Surveillance Testing of EDG During Refueling & Normal Operations
ML17332A9971995-10-20020 October 1995
Application for Amends to Licenses DPR-58 & DPR-74,proposing to Add Exemption to TS 4.0.4 in Surveillance Requirements for MSIV
ML17332A9111995-08-0606 August 1995
Application for Amends to Licenses DPR-58 & DPR-74,informing That Licensee Has 45 Days from Date of Issuance to Implement Amend Unless Otherwise Specified
ML17334B5561995-08-0404 August 1995
Application for Exigent Amend to License DPR-58,modifying TS 4.4.5.4 & 4.4.5.5 for Repair of Hybrid Expansion Joint Sleeved SG Tubes.Proprietary W Rept WCAP-14446, Repair...Of Hybrid Expansion Joint...Tubes Encl.W Rept Withheld
ML17332A8271995-06-30030 June 1995
Application for Amends to Licenses DPR-58 & DPR-74,changing TS Section 5.3.1 to Allow Fuel Reconstitution,Per GL 90-02, Suppl 1
ML17334B5501995-06-20020 June 1995
License Amend Request to Licenses DPR-58 & DPR-74,to Remove Requirements for Fire Protection Systems from Licenses & Guidance in GL 86-10,GL 88-12 & GL 93-07
ML17332A7991995-06-15015 June 1995
Application for Amends to Licenses DPR-58 & DPR-74,revising TS 4.8.1.1.2.e.7 to Reduce Duration of Surveillance Testing for EDGs During Refueling Operations from 24 H to 8 H
ML17334B5481995-05-26026 May 1995
Application for Amends to Licenses DPR-58 & DPR-74.Amends Would Support Operation of Unit 1 at SG Tube Plugging Levels Up to 30%,make One Unit 1 TS More Nearly Like Corresponding Unit 2 TS & Maintain Consistency of Unit 2 Criteria
ML17334B5461995-05-26026 May 1995
Application for Amends to Licenses DPR-58 & DPR-74,modifying Tech Specs 3/4.3.1 (Reactor Trip Sys Instrumentation) & 3/4.3.2 (ESFAS Instrumentation) & Bases to Relocate Tables of Response Time Limits to Ufsar,Per GL 93-08
ML17332A7661995-05-25025 May 1995
Application for Amends to Licenses DPR-58 & DPR-74.Amends Would Incorporate Cycle & Burnup Dependent Peaking Factor Penalty
ML17332A7741995-05-25025 May 1995
Application for Amends to Licenses DPR-58 & DPR-74,modifying TS 5.3.1 to Allow Fuel Reconstitution,Per GL 90-02,Suppl 1
ML17332A7771995-05-25025 May 1995
Application for Amends to Licenses DPR-58 & DPR-74,modifying TS Table 4.3-2 to Change Main Steam Line Isolation Valve Manual Actuation Sys Surveillance Frequency from Monthly to Quarterly
1999-09-23
[Table view]
Category:TEXT-LICENSE APPLICATIONS & PERMITS
MONTHYEARML17335A5551999-10-12012 October 1999
Application for Amends to Licenses DPR-58 & DPR-74,revising TS Surveillance Requirement 4.6.2.2.d for Spray Additive Sys to Relocate Details Associated with Acceptance Criteria & Test Parameters to Associated TS Bases
ML17335A5591999-10-11011 October 1999
Supplement to Application for Amends to Licenses DPR-58 & DPR-74,replacing Correct TS Pages Inadvertently Included in 990923 Submittal.Attached Pages Also Include Appropriate Administrative Changes
ML17335A5411999-10-0101 October 1999
Application for Amends to Licenses DPR-58 & DPR-74,revising Containment Recirculation Sump Water Inventory.Calculation & non-proprietary WCAP-15302 Rept Also Encl
ML17326A1571999-09-23023 September 1999
Application for Amends to Licenses DPR-58 & DPR-74,involving Movement of Loads in Excess of Design Basis Seismic Capability of Auxiliary Bldg Load Handling Equipment & Structures
ML17326A1421999-09-17017 September 1999
Application for Amends to Licenses DPR-58 & DPR-74,to Allow Credit of Rod Cluster Control Assemblies for Cold Leg Large Break LOCA Subcriticality.Ts Pages & non-proprietary Versions of WCAP-15246 Encl.Proprietary Version Withheld
ML17326A1161999-09-10010 September 1999
Application for Amends to Licenses DPR-58 & DPR-74,revising TS Surveillance Requirement 4.4.7,TS Tables 4.4-3,3.4-1 & TS Surveillance Requirement 4.11.2.2 Re RCS & Gas Storage Tank Sampling
ML17326A0921999-08-17017 August 1999
Application for Amend to License DPR-58,to Change TS 3/4.4.5 & Bases for TS 3/4.4.5,3/4.4.6.2 & 3/4.4.8 to Remove voltage-based Repair Criteria,F* Repair Criteria & Sleeving Methodologies from Unit 1 TS & Clarify Bases Sections
ML17325B6041999-05-21021 May 1999
Application for Amends to Licenses DPR-58 & DPR-74,revising Limitations of Positive Reactivity Additions in Several TS Action Statements
ML17325B5511999-04-19019 April 1999
Application for Amends to Licenses DPR-58 & DPR-74,revising TS 3/4.8.1.2, Electrical Power Systems & Associated Bases to Provide one-time Extension of 18-month Surveillance Interval for Specific SRs
ML17335A3661998-12-0303 December 1998
Application for Amends to Licenses DPR-58 & DPR-74,adding TS for Distributed Ignition Sys
ML17335A3631998-12-0303 December 1998
Application for Amend to License DPR-58,revising TS 3/4.7.7, Sealed Source Contamination & Associated Bases to Address Testing Requirements for Fission Detectors
ML17335A3591998-12-0303 December 1998
Application for Amends to Licenses DPR-58 & DPR-74,making Administrative Changes to Remove Obsolete Info,To Provide Consistency Between Units 1 & 2,to Provide Consistency with Std Tech Specs,To Provide Clarification & to Correct Typos
ML17335A3561998-12-0303 December 1998
Application for Amends to Licenses DPR-58 & DPR-74,revising TS 4.6.5.1, Ice Condenser,Ice Bed & Associated Bases to Reflect Max Ice Condenser Flow Channel Blockage Assumed in Accident Analyses
ML17335A2631998-10-0808 October 1998
Application for Amends to Licenses DPR-58 & DPR-74,revising TS Containment Sys Bases 3/4.6.1.4 Re Internal Pressure & 3/4.6.1.5 Re Air Temp
ML17335A2761998-10-0808 October 1998
Application for Amends to Licenses DPR-58 & DPR-74,placing Tighter Restrictions on Amount of Time RWST Water Level Instrumentation Can Be Out of Svc Before Compensatory Actions Are Required
ML17335A2671998-10-0808 October 1998
Application for Amends to Licenses DPR-58 & DPR-74,revising TS 3.4.1.3, RCS - Shutdown & Associated Bases to Provide Separate Requirements for Modes 4 & 5 with Loops Filled & Mode 5 with Loops Not Filled
ML17335A2311998-09-14014 September 1998
Application for Amends to Licenses DPR-58 & DPR-74,changing Runout Limits for Safety Injection Pump to 675 Gpm Unless Pump Is Specifically Tested to Higher Flow Rate Not Exceeding 700 Gpm
ML17335A1901998-08-28028 August 1998
Application for Amend to License DPR-58,requesting Extension of SG Surveillance,Which TSs Require to Be Performed on or Before 990408,until End of Current Refuel Cycle Currently Scheduled for Mar 2000.W/assessment of SG Degradation & TSs
ML17334A7471998-06-10010 June 1998
Application for Amends to Licenses DPR-54 & DPR-78,changing Implementation Date to Reduce Boric Acid Concentration in Boric Acid Storage Sys.Attachment 1 to Ltr Contains Description of Proposed Change & Justification for Change
ML17334B7011998-03-0303 March 1998
Application for Amends to TS for Licenses DPR-58 & DPR-74, Removing Word Immediately from Unit 1 Hydrogen Recombiner Surveillance Requirement 4.6.4.2.b.4 & Revising Plants TS 3/4.6.4 Bases
ML17334B6561997-10-0808 October 1997
Application for Amends to Licenses DPR-58 & DPR-78,changing TSs 3/4.6.5 & 3/4.5.5 to Increase Both Minimum Required Ice Mass Per Ice Basket & Total Minimum Required Ice Mass. Proprietary Summary of Sump Inventory Calculations,Encl
ML17333B0431997-09-19019 September 1997
Application for Amends to Licenses DPR-58 & DPR-74,deleting Requirement for Automatic Valve Closure Feature on RHR Sys Suction from RCS
ML17333A9831997-08-11011 August 1997
Application for Amends to Licenses DPR-58 & DPR-74,allowing Filling of ECCS Accumulators W/O Declaring ECCS Equipment Inoperable
ML17335A2101997-08-0101 August 1997
Application for Amends to Licenses DPR-58 & DPR-74,deleting Wording When Secondary Steam Supply Pressure Is Greater than 310 Psig from TS
ML17333A8281997-03-26026 March 1997
Application for Amends to Licenses DPR-58 & DPR-74, Modifying TS 4.7.5.1.e.2 Which Describes Control Room Ventilation Sys Autostart Functions
ML17333A8311997-03-26026 March 1997
Application for Amends to Licenses DPR-58 & DPR-74,changing Grammatical Correction to Wording of Unit 2 TS 3.4.8,Action a for Modes 1,2 & 3 & Returning Frequency Requirement to TS 4.7.1.2.c & 4.7.1.2.d That Was Inadvertently Deleted
ML17333A7121996-12-20020 December 1996
Application for Amends to Licenses DPR-58 & DPR-74, Requesting Rev of Reactor Coolant Pump Flywheel Insp Frequency
ML17334B5941996-07-11011 July 1996
Application for Amends to Licenses DPR-58 & DPR-74,revising TS to Support Operation of Unit 2 at Increased Core Rated Thermal Power of 3,588 Mwt.Rev 1 to WCAP-14489, ...Unit 2 3,600 Mwt Uprating Program Licensing Rept Encl
ML17334B5901996-06-19019 June 1996
Application for Amend to License DPR-58,addressing Applicable Requirements of NRC GL 95-05, Voltage-Based Repair Criteria for Repair of Westinghouse SG Tubes Affected by Outside Diameter Stress Corrosion Cracking.
ML17334B5891996-06-11011 June 1996
Application for Amends to Licenses DPR-58 & DPR-74,removing TSs Certain Requirements for Administrative Controls,Related to QA Requirements,Per Administrative Ltr 96-05
ML17333A4201996-04-0808 April 1996
Application for Amends to Licenses DPR-58 & DPR-74,moving TS 4.0.4 Exemption Statement for MSSVs Into Section 4.7.1.1
ML17333A3551996-03-12012 March 1996
Application for Amend to License DPR-74,removing TSs Re Shutdown & Control Rod Position Indication While in Modes 3, 4 & 5
ML17334B5751996-02-29029 February 1996
Application for Amends to Licenses DPR-58 & DPR-74,revising TS to Reduce Boric Acid Concentration in Boric Acid Storage Sys from Approx 12 Percent to Approx 4 Percent by Weight. Technical Rept Presenting Justificaion for Changes Encl
ML17334B5741996-02-26026 February 1996
Application for Amends to Licenses DPR-58 & DPR-74,modifying TS 5.6.2 to Increase Current Limit on Nominal Fuel Assembly Enrichment for New,Westinghouse - Fabricated Fuel Stored in New Fuel Storage Racks
ML17333A3201996-02-22022 February 1996
Application for Amends to Licenses DPR-58 & DPR-74,proposing to Remove Requirement That Operations Superintendent Must Hold or Have Held Sol at Plant or Similar Reactor
ML17333A3151996-02-22022 February 1996
Application for Amends to Licenses DPR-58 & DPR-74,modifying Table 4.8-1,DG Test Schedule by Ref Rg 1.9,Rev 3 Rather than Rg 1.108,Rev 1 Criteria for Determination of Valid DG Test
ML17333A2641996-01-12012 January 1996
Application for Amends to Licenses DPR-58 & DPR-74,modifying TS Section 4.4.11 to Eliminate SR Demonstrating Operability of Emergency Power Supply for Pressurizer PORVs & Block Valves
ML17333A2391995-12-19019 December 1995
Application for Amends to Licenses DPR-58 & DPR-74,modifying TS 3/4.6.1.2,3/4.6.1.3,3/4.6.1.6 & 3/4.6.1.6 to Require Types A,B & C Tests (Overall Integrated & Local Containment Leakage Rate) to Be Performed Per 10CFR50,App J Option B
ML17332B0111995-11-10010 November 1995
Application for Amends to Licenses DPR-58 & DPR-74,revising Ts,By Modifying Surveillance Testing of EDG During Refueling & Normal Operations
ML17332A9971995-10-20020 October 1995
Application for Amends to Licenses DPR-58 & DPR-74,proposing to Add Exemption to TS 4.0.4 in Surveillance Requirements for MSIV
ML17332A9111995-08-0606 August 1995
Application for Amends to Licenses DPR-58 & DPR-74,informing That Licensee Has 45 Days from Date of Issuance to Implement Amend Unless Otherwise Specified
ML17334B5561995-08-0404 August 1995
Application for Exigent Amend to License DPR-58,modifying TS 4.4.5.4 & 4.4.5.5 for Repair of Hybrid Expansion Joint Sleeved SG Tubes.Proprietary W Rept WCAP-14446, Repair...Of Hybrid Expansion Joint...Tubes Encl.W Rept Withheld
ML17332A8271995-06-30030 June 1995
Application for Amends to Licenses DPR-58 & DPR-74,changing TS Section 5.3.1 to Allow Fuel Reconstitution,Per GL 90-02, Suppl 1
ML17334B5501995-06-20020 June 1995
License Amend Request to Licenses DPR-58 & DPR-74,to Remove Requirements for Fire Protection Systems from Licenses & Guidance in GL 86-10,GL 88-12 & GL 93-07
ML17332A7991995-06-15015 June 1995
Application for Amends to Licenses DPR-58 & DPR-74,revising TS 4.8.1.1.2.e.7 to Reduce Duration of Surveillance Testing for EDGs During Refueling Operations from 24 H to 8 H
ML17334B5481995-05-26026 May 1995
Application for Amends to Licenses DPR-58 & DPR-74.Amends Would Support Operation of Unit 1 at SG Tube Plugging Levels Up to 30%,make One Unit 1 TS More Nearly Like Corresponding Unit 2 TS & Maintain Consistency of Unit 2 Criteria
ML17334B5461995-05-26026 May 1995
Application for Amends to Licenses DPR-58 & DPR-74,modifying Tech Specs 3/4.3.1 (Reactor Trip Sys Instrumentation) & 3/4.3.2 (ESFAS Instrumentation) & Bases to Relocate Tables of Response Time Limits to Ufsar,Per GL 93-08
ML17332A7661995-05-25025 May 1995
Application for Amends to Licenses DPR-58 & DPR-74.Amends Would Incorporate Cycle & Burnup Dependent Peaking Factor Penalty
ML17332A7741995-05-25025 May 1995
Application for Amends to Licenses DPR-58 & DPR-74,modifying TS 5.3.1 to Allow Fuel Reconstitution,Per GL 90-02,Suppl 1
ML17332A7771995-05-25025 May 1995
Application for Amends to Licenses DPR-58 & DPR-74,modifying TS Table 4.3-2 to Change Main Steam Line Isolation Valve Manual Actuation Sys Surveillance Frequency from Monthly to Quarterly
1999-09-23
[Table view] |
Text
.~REGULA'J;ORY INFORMATION DISTRIBUTIO SYSTEM (RIDS)ACCESSION NBR:9812080045 DOC.DATE: 98/12/03 NOTARIZED:
YES lACIL:50-315 Donald C.Cook Nuclear Power Plant, Unit 1, Indiana M 50-3).6 Donald C.Cook Nuclear Power.Plant, Unit 2;Indiana M AUTH A'fAME"-AUTHOR AFFILIATION POWERS,R.P.
Indiana Michigan Power Co.RECIP.NAME RECIPIENT AFFILIATION Records Management Branch (Document Control Desk)DOCKET¹05000315 05000316
SUBJECT:
Application for amends to licenses DPR-58 E DPR-74,revising TS 4.6.5.1,"Ice Condensedr,Ice Bed" S associated bases to reflect max ice condenser flow channel blockage assumed in accident analyses.DISTRIBUTION CODE: AOOID COPIES RECEIVED:LTR I ENCL I SIZE: TITLE: OR Submittal:
General Distribution NOTES: RECIPIENT ID CODE/NAME PD3-3 LA STANG, J COPIES LTTR ENCL 1 1 1 1 RECIPIENT ID CODE/NAME PD3-3 PD COPIES LTTR ENCL 1 1 0 INTERN.FIL CE NRR DE/EMCB NRR/DSSA/SPLB NUDOCS-ABSTRACT EXTERNAL: NOAC 1 1 1 1 1 1 1 1 1 1 I I NRR/DE/ECGB/A NRR/DRCH/HICB NRR/DSSA/SRXB OGC/HDS3 NRC PDR 1 1 1 1 1 1 1 0 1.1 D NOTE TO ALL"RZDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE.TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTR1BUTZON LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD)ON EXTENSION 415-2083 TOTAL NUMBER OF COPIES REQUIRED: LTTR 13 ENCL 12
.3 Indiana Michlga~Power Company~500 Circle Drive Buchanan, Ml 491071373ÃIRON MA NICHIGAM P8lfM December 3, 1998 AEP:NRC: 09000 Docket Nos.: 50-315 50-316 U.S.Nuclear Regulatory Commission ATTN: Document Control Desk Mail Stop 0-Pl-17 Washington, DC 20555-0001 Gentlemen:
Donald C.Cook Nuclear Plant Units 1 and 2 TECHNICAL SPECIFICATIONS CHANGE REQUEST ICE CONDENSER FLOW CHANNELS Indiana Michigan Power Company, the Licensee for Donald C.Cook Nuclear Plant units 1 and 2, proposes to amend Appendix A, technical specifications (T/S),'f facility operating licenses DPR-58 and DPR-74 pursuant to 10 CFR 50.90.The Licensee proposes to revise T/S 4.6.5.1,"Ice Condenser, Ice Bed," and its associated bases to reflect the maximum ice condenser flow channel blockage assumed in'the accident analyses.Attachment 1 provides a detailed description and safety analysis of the proposed changes.Attachments 2A and 2B provide marked up T/S pages for unit 1 and unit 2, respectively, Attachments 3A and 3B provide the proposed T/S pages with the changes incorporated for unit 1 and unit 2, respectively.
Attachment 4 describes the evaluation performed in accordance with 10 CFR 50.92(c), which concludes that no significant hazards consideration is involved.Attachment 5 provides the environmental assessment.
The proposed changes have been reviewed by the plant nuclear safety review committee and by the nuclear safety and design review committee.
98f2080045 98f203 PDR, ADOCK 05000815 P'DR U.S.Nuclear Regulatory Commission Page 2 AEP:NRC: 09000 Copies of this letter and its attachments are being transmitted to the Michigan Public Service Commission and Michigan Department of Public Health, in accordance with the requirements of 10 CFR 50.91.Sincerely, R.P.Powers Vice President SWORN TO AND SOBSCRIBED BEFORE ME THIS~i DAY OF)i I/I 1998 Notary Public My Commission Expires/jmc~ANiCE M.BiGKERS Attachments
~@8Fob o Be+on CoNIQ, M My Commission Expires Feb.16,2001 c: J.A.Abramson, w/attachments J.L.Caldwell, w/attachments MDEQ-DW&RPD, w/attachments NRC Resident Inspector, w/attachments J.R.Sampson, w/attachments U.S.Nuclear Regulatory Commission Page 3 AEP:NRC: 09000 bc: T.P, Beilman, w/attachments J.J.Euto B.J.Hickle G.Homna FOLIO, w/attachments D.F.Kunsemiller/J.
BE Kingseed/G.
P.Arent/M.J.Gumns M.W.Rencheck/E.
R.Eckstein/D.
F.Powell/D.R.Hafer/K.R.Baker J.F.Stang, Jr.,-NRC Washington, DC, w/attachments ATTACHMENT 1 TO AEP:NRC: 09000 DESCRIPTION AND SAFETY ANALYSIS FOR PROPOSED CHANGES Attachment 1 to AEP:NRC: 09000 Page 1 Descri tion and Safet Anal sis for the Pro osed Chan es A.Summary of Proposed Changes The Licensee proposes to revise technical specification (T/S)4.6.5.1.b.3 and 4.6.5.1.c,"Ice Condenser, Ice Bed," and its associated bases for Donald C.Cook Nuclear Plant units 1 and 2.The proposed change would revise the surveillance for ice condenser flow channels to provide a more conservative sampling approach for initially assessing the potential for flow channel blockage and to impose specific criteria for assessing the extent and significance of any observed blockage when compared to the maximum blockage allowed by analysis.This criteria is not adequately defined in the current surveillance.
Additionally, the surveillance will be changed to utilize the term flow channel (vice flow passage)to be consistent with corresponding T/S 3.6.5.1.b.
Information currently located in 4.6.5.1.b.3, involving areas not considered to be a flow"channel," is relocated to T/S 4.6.5.1.c.
Finally, the bases are revised to define a flow channel and the reason for the maximum allowable blockage.The current bases provide no information related to flow channel blockage.The proposed changes are described in detail in section E of this attachment.
T/S pages that are marked to show the proposed changes are provided in attachments 2A and 2B for unit 1 and unit 2, respectively.
The proposed T/S pages with the'changes incorporated are provided in attachments 3A and 3B for unit 1 and unit 2, respectively.
B.Description of the Current Requirements T/S surveillance requirement 4.6.5.1.b.3 requires an inspection every 18 months to confirm that flow passages (top deck floor grating, intermediate deck and flow passages between ice baskets and past lattice frames)in each ice condenser bay have not accumulated frost or ice exceeding a nominal thickness of 3/8 of an'inch.This is accomplished by visual inspection of at least two flow passages per bay.Exceeding the criteria for either selected passage requires visual inspection of an additional 20 representative passages.More than one restricted flow passage per bay is evidence of abnormal degradation of the ice condenser.
Surveillance requirement 4.6.5.1.c requires a similar assessment of the lower inlet plenum support structures and turning vanes.C.Bases for the Current Requirements No bases are provided for the current surveillance requirements.
However, it is clear that the approach was based on the assumption that frost and ice buildup would be fairly uniform throughout each bay of the ice condenser.
Therefore, inspection of a few flow channels would provide a good indication of overall conditions in that bay, constituting the basis for acceptance or 0 I Attachment 1 to AEP:NRC: 09000 Page 2 indicating the need for additional inspection/evaluation of ice condenser conditions.
A criterion to resolve"indications of abnormal degradation" was not provided in the surveillance or the bases.D.Need for Revision of the Requirement The Licensee is submitting this amendment to T/S surveillance 4.6.5'.b.3 and 4.6.5.1.c, to: i.address the potential for non-uniform accumulation of frost/ice within the ice condensers by increasing the sample size to selectively include areas where operating experience has shown increased accumulation; ii.provide a specific numerical acceptance criteria (based on analysis)for assessing"indications of abnormal degradation" in flow channels;iii.clarify the term flow"channel" and consistently utilize it in surveillance 4.6.5.1.b.3.
because this term is used in the corresponding T/S LCO 3.6.5.1b;and iv.remove from T/S 4.6.5.1.b.3.
the discussion of ice condenser areas not comprising flow channels (as utilized in the analysis of ii.above)and consolidate these areas under T/S 4.6.5.1.c where similar areas are included;E.Description of the Proposed Changes The Licensee proposes to revise T/S surveillance 4.6.5.1.b.3 to: i.require an increase in the surveillance sample size from the current 2 flow channels per ice condenser bay to 4 flow channels per bay.The additional two flow channels inspected are specified to include one in radial rows 1 (adjacent to the containment wall)and one in radial row 9 (adjacent to the crane wall);ii.in the case of discovering more than one restricted flow channel per ice condenser bay, require a 100%inspection of the bay to determine that the bay is less than 15%blocked;and iii.(and iv.)consistently utilize the term flow"channel" in lieu of flow"passage" to maintain consistency with corresponding T/S LCO 3.6.5.1b.The meaning of the term flow channel is clarified by removing mention of the top deck floor grating area and the intermediate deck area.These two areas are relocated to T/S 4.6.5.1.c where other areas important to ice condenser performance are included.The Licensee proposes to include appropriate bases for T/S 4.6.5.1.b.3 and 4.6.5.1.c consistent with the changes described in i, ii, iii, and iv above.The bases should also clarify the intent of"representative" sample of 20 additional flow channels as utilized in the T/S.
Attachment 1 to AEP:NRC: 09000 Page 3 F.Bases of the Proposed Changes In January 1998, a detailed inspection and mapping of the accumulation of frost and ice in the unit 1 and unit 2 ice condenser flow channels was performed.
The inspection showed that the flow channels in each ice condenser bay associated with ice baskets in radial rows 1 (adjacent to the containment wall)and radial row 9 (adjacent to the crane wall)had the most accumulations of frost and ice.Evaluation of the inspection results attributed the condition to a slight temperature gradient in the ice condensers resulting from the generally warmer crane wall and the cooler containment wall.This gradient has been attributed to causing the increased sublimation rates observed for ice in row 9 baskets.Some of the mass lost due to sublimation in row 9 is believed to migrate to cooler regions of the ice condenser and shows up in row 1 as increased frosting.Due to the higher sublimation rates in row 9, these baskets have most frequently been subjected to ice addition activities.
Ice additions to the baskets can result in ice spillage into the adjacent flow channels.This ice then becomes a potential nucleation site for frost growth and accumulation.
The ice condenser mapping showed that frost and ice accumulation frequently involves relatively localized areas attributed to the nucleation and growth mechanism.
Due to this mechanism, the flow channels in radial rows 1 and 9 are generally not representative of the other flow channels in rows 2 through 8.To provide reasonable assurance that rows 1 and 9 are properly assessed during ice channel surveillance activities, the specification is being changed to require 1 additional sample from each radial row 1 and radial row 9 in each bay.This has the effect of biasing the sample in a conservative direction that should tend to promote sample expansion and additional evaluation utilizing the 15%blockage criteria when warranted.
The nucleation and growth mechanism is also the reason that expansion of sampling due to discovery of obstructed channels is specified to be performed in the area that the obstruction was found.This is considered more representative and conservative than randomly expanding the sample to areas not adjacent to the area of the observed obstruction.
As described in Chapter 14.3.4, Containment Integrity Analysis of the Cook Nuclear Plant Updated Final Safety Analysis Report (UFSAR), a Transient Mass Distribution (TMD)computer code was utilized for the sub-compartment analysis of the unit 1 and unit 2 containments.
The analysis was performed assuming a total blockage of up to 15%of the flow areas through the ice condensers.
The analysis was applicable to both unit 1 and unit 2 and assessed the effects of the 15%ice condenser flow blockage on the peak differential pressure acting across the operating deck, the crane wall, and the containment shell.The analysis models the lower compartment as 6 elements and the ice condenser is modeled with 6 sections.The analysis does not perform detailed flow channel analysis, but the TMD analysis lumps the ice condenser bays with as few as 2.75 bays together.The 15%flow blockage analysis assumed a uniform ice blockage throughout the ice condenser flow paths.The basis for the TMD flow areas Attachment 1 to AEP:NRC: 09000 Page 4 includes the areas between the ends of the lattice frames and the wall panel air ducts on both the crane wall and the containment wall sides.The minimum ice condenser flow area through each bay occurs at the lattice frame support elevations and is taken to be the net open area at these support elevations.
This includes the net open area left between the crane wall and the containment wall inside surfaces, after subtracting out the areas for the ice condenser equipment at that elevation, that includes: ice baskets full of ice, lattice frame, lattice frame columns, wall panel air ducts, wall panel cradles, and other appurtenances.
This is conservative, as the minimum area would be at the lattice frame elevation, and the flow areas elsewhere would be larger.The blockage was assumed to be permanent, i.e., no credit was taken for the high energy flow of air and steam entering the ice condenser to blow out or melt accumulations of frost or ice.Additionally, the one dimensional flow model of the current TMD code does not consider the beneficial effects of cross-flow within the ice condenser.
G.Impact of 0he Proposed Changes The proposed changes are required to support startup of unit 1.The ice condenser is required to be operable prior to entering mode 4.If the change is not approved, the mode change cannot be made.This submittal affects some of the same pages as submittals AEP:NRC:1319 and AEP:NRC:1291.
AEP:NRC:1319 involves proposed changes to the ice condenser ice weight T/S and AEP:NRC:1291, involving the distributed ignition system, provides new bases pages that affect the same pages as this submittal'he T/S pages in attachments 2A, 2B, 3A, and 3B do not reflect the changes proposed in the other submittals.
Changes will be incorporated based on when each request is approved.H.Schedule Requirements The Licensee requests approval of this request by January 20, 1999, to meet the startup schedule.
