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{{#Wiki_filter:Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000May 20,2014ATTN: Document Control DeskU. S. Nuclear Regulatory CommissionWashington, D.C. 20555-0001
{{#Wiki_filter:Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 May 20,2014ATTN: Document Control DeskU. S. Nuclear Regulatory Commission Washington, D.C. 20555-0001


==Subject:==
==Subject:==
10 cFR 5A.4Watts Bar Nuclear Plant, Unit 1Facility Operating License No. NPF-90NRC Docket No.50-390REVISION O OF THE CYCLE 13 GORE OPERATING LIII'IITS REPORT(coLR)Pursuant to Watts Bar Nuclear Plant Technical Specifications Section 5.9.5.d,Tennessee Valley Authority (TVA) has enclosed Revision 0 of the Unit 1 Cycle 13COLR. The analytical methods used to determine the core operating limits werepreviously reviewed and approved by the NRC.There are no regulatory commitments contained in this letter or the enclosure. Shouldyou have questions regarding this submittal, please contact Russell A. Stroud at (423)365-1435.Respectfully,%,,44*"k6nristopner R. church /Site Vice PresidentWatts Bar Nuclear PlantWatts Bar Nuclear Plant, Unit 1, Cycle 13 Core Operating Limits ReportRevision 0 March 2014
10 cFR 5A.4Watts Bar Nuclear Plant, Unit 1Facility Operating License No. NPF-90NRC Docket No.50-390 REVISION O OF THE CYCLE 13 GORE OPERATING LIII'IITS REPORT(coLR)Pursuant to Watts Bar Nuclear Plant Technical Specifications Section 5.9.5.d,Tennessee Valley Authority (TVA) has enclosed Revision 0 of the Unit 1 Cycle 13COLR. The analytical methods used to determine the core operating limits werepreviously reviewed and approved by the NRC.There are no regulatory commitments contained in this letter or the enclosure.
Shouldyou have questions regarding this submittal, please contact Russell A. Stroud at (423)365-1435.
Respectfully,
%,,44*"k6nristopner R. church /Site Vice President Watts Bar Nuclear PlantWatts Bar Nuclear Plant, Unit 1, Cycle 13 Core Operating Limits ReportRevision 0 March 2014


==Enclosure:==
==Enclosure:==


U.S. Nuclear Regulatory CommissionPage 2cc (Enclosure):NRC Regional Administrator - Region llNRR Project Manager - Watts Bar Nuclear PlantNRC Senior Resident lnspector - Watts Bar Nuclear Plant, Unit 1 EnclosureWatts Bar Nuclear Plant, Unit 1, Cycle 13Core Operating Limits ReportRevision 0March 2014 Prepared by:QA Record136 140320 800WATTS BAR NUCLEAR PIANT, UNIT 1, CYCLE 13CORE OPERATING LIMITS REPORTRevision 0March 2014DateLJ/C L,!,^tu*u ,n., ,@nase' oai-f, +14qReviewed by:3r.t m .E'rc,l* ^ t I /25 /zo*Manager, PWR Nuclear Fuels EngineeringApproved by:0.P b,eokar*nPORC ChairmanPlant ManagerRevisionDate ofPORCApprovalPORCMeetingNumberAffectedPaqesReason fnr Revision03'27, tt{{14{allinitial issueUnit 1Watts BarCycle 13Revision 0Page 1 of 10 1.02.0Unit IWATTS BARBOLAROHZPEOLRTPCORE OPERATING LIMITS REPORTThis Core Operating Limits Report (COLR) for Watts Bar Unit 1 Cycle 13 has been prepared inaccordance with the requirements of the Technical Specifications 5.9.5.The Technical Specifications affected by this report are listed below:3.1.4 Moderator Temperature Coefficient (MTC)3.1.6 Shutdown Bank Insertion Limits3.I.7 Control Bank Insertion Limits3.2.1 Heat Flux Hot Channel Factor (Fq(Z))3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (Far)3.2.3 Axial Flux Difference (AFD)3.5.1 Accumulators3.5.4 Refueling Water Storage Tank (RWST)3.9.I BoronConcentrationOPERATINGLIMITSThe cycle-specific parameter limits for the specifications listed in section 1.0 are presented in thefollowing subsections. These limits have been developed using the NRC approvedmethodologies specified in the Technical Specifications Section 5.9.5.The following abbreviations are used in this section:Beginning of Cycle LifeA11 Rods OutHot Zero Thermal PowerEnd of Cycle LifeRated Thermal PowerCycle 13Revision 0Page 2 of 10 2.1 MODERATOR TEMPERATURE COEF'F'ICIENT . MTC (LCO 3.1.4)2.1.1 The MTC limits are:The AROIHZP - MTC shall be less positive than or equal to 0 AldldoF (upper limil.With the measured BOL/ARO/HZP - MTC more positive than -1.17 x l0-5 Ak/ldoF(as-measured MTC limit), establish confrol rod withdrawal limits to ensure the MTCremains less positive than or equal to 0 AldldoF (upper limit) for all times in core life.The EOL/ARO/RTP - MTC shall be less negative than or equal to4.5 x 104 LklW"F (lowerlimi!.2.1.2 The 300 ppm surveillance limit is:The measured 300 ppm /ARO/RTP-MTC should be less negative than or equal to-3.75 x 104 Ak/ldoF.2.1.3 The 60 ppm surveillance limit is:The measured 60 ppm /ARO/RTP-MTC should be less negative than or equal to4.28x 104 Ak/l/oF.2.2 SHUTDOWN BAIIK INSERTION LIMTTS (LCO 3.1.6)2.2.1 The shutdown banks shall be withdrawn to a position greater than or eqtnlto 225steps withdrawn.2.3 CONTROL BArYK INSERTION LrLrTS (LCO 3.1.42.3.1 The control banks are fully withdrawn or shall be limited in physical insertion asshown in Figure 1.2.3.2Eachcontrol bank shall be considered fully withdrawn from the core at greater than orequal to 225 steps.2.3.3 Thecontrol banks shall be operated in sequence by withdrawal of Bank A, Bank B,Bank C, and Bank D. The confrol banla shall be sequenced in reverse order uponinsertion.Cycle 13Revision 0Unit IWATTS BARPage 3 of l0 2.3.4Each control bank not fully withdrawn from the core shall be operated with thefollowing overlap as a fimction of park position.2.4Unit IWATTS BARHEAT FLUX HOT CHANNEL FACTOR -Fo(Z) (LCO 3.2.1)Fa(Z) s [CFQ/ P]
U.S. Nuclear Regulatory Commission Page 2cc (Enclosure):
NRC Regional Administrator  
- Region llNRR Project Manager - Watts Bar Nuclear PlantNRC Senior Resident lnspector  
- Watts Bar Nuclear Plant, Unit 1 Enclosure Watts Bar Nuclear Plant, Unit 1, Cycle 13Core Operating Limits ReportRevision 0March 2014 Prepared by:QA Record136 140320 800WATTS BAR NUCLEAR PIANT, UNIT 1, CYCLE 13CORE OPERATING LIMITS REPORTRevision 0March 2014DateLJ/C L,!,^tu*u  
,n., ,@nase' oai-f, +14qReviewed by:3r.t m .E'rc,l*  
^ t I /25 /zo*Manager, PWR Nuclear Fuels Engineering Approved by:0.P b,eokar*n PORC ChairmanPlant ManagerRevisionDate ofPORCApprovalPORCMeetingNumberAffectedPaqesReason fnr Revision03'27, tt{{14{allinitial issueUnit 1Watts BarCycle 13Revision 0Page 1 of 10 1.02.0Unit IWATTS BARBOLAROHZPEOLRTPCORE OPERATING LIMITS REPORTThis Core Operating Limits Report (COLR) for Watts Bar Unit 1 Cycle 13 has been prepared inaccordance with the requirements of the Technical Specifications 5.9.5.The Technical Specifications affected by this report are listed below:3.1.4 Moderator Temperature Coefficient (MTC)3.1.6 Shutdown Bank Insertion Limits3.I.7 Control Bank Insertion Limits3.2.1 Heat Flux Hot Channel Factor (Fq(Z))3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (Far)3.2.3 Axial Flux Difference (AFD)3.5.1 Accumulators 3.5.4 Refueling Water Storage Tank (RWST)3.9.I BoronConcentration OPERATINGLIMITS The cycle-specific parameter limits for the specifications listed in section 1.0 are presented in thefollowing subsections.
These limits have been developed using the NRC approvedmethodologies specified in the Technical Specifications Section 5.9.5.The following abbreviations are used in this section:Beginning of Cycle LifeA11 Rods OutHot Zero Thermal PowerEnd of Cycle LifeRated Thermal PowerCycle 13Revision 0Page 2 of 10 2.1 MODERATOR TEMPERATURE COEF'F'ICIENT  
. MTC (LCO 3.1.4)2.1.1 The MTC limits are:The AROIHZP - MTC shall be less positive than or equal to 0 AldldoF (upper limil.With the measured BOL/ARO/HZP  
- MTC more positive than -1.17 x l0-5 Ak/ldoF(as-measured MTC limit), establish confrol rod withdrawal limits to ensure the MTCremains less positive than or equal to 0 AldldoF (upper limit) for all times in core life.The EOL/ARO/RTP  
- MTC shall be less negative than or equal to4.5 x 104 LklW"F (lowerlimi!.
2.1.2 The 300 ppm surveillance limit is:The measured 300 ppm /ARO/RTP-MTC should be less negative than or equal to-3.75 x 104 Ak/ldoF.2.1.3 The 60 ppm surveillance limit is:The measured 60 ppm /ARO/RTP-MTC should be less negative than or equal to4.28x 104 Ak/l/oF.2.2 SHUTDOWN BAIIK INSERTION LIMTTS (LCO 3.1.6)2.2.1 The shutdown banks shall be withdrawn to a position greater than or eqtnlto 225steps withdrawn.
2.3 CONTROL BArYK INSERTION LrLrTS (LCO 3.1.42.3.1 The control banks are fully withdrawn or shall be limited in physical insertion asshown in Figure 1.2.3.2Eachcontrol bank shall be considered fully withdrawn from the core at greater than orequal to 225 steps.2.3.3 Thecontrol banks shall be operated in sequence by withdrawal of Bank A, Bank B,Bank C, and Bank D. The confrol banla shall be sequenced in reverse order uponinsertion.
Cycle 13Revision 0Unit IWATTS BARPage 3 of l0 2.3.4Each control bank not fully withdrawn from the core shall be operated with thefollowing overlap as a fimction of park position.
2.4Unit IWATTS BARHEAT FLUX HOT CHANNEL FACTOR -Fo(Z) (LCO 3.2.1)Fa(Z) s [CFQ/ P]
* K(Z) for P > 0.5Fq(Z)< [CFQ/0.s]
* K(Z) for P > 0.5Fq(Z)< [CFQ/0.s]
* K(z) forP( 0.5Where P : Thermal Power / Rated Thermal Power2.4.1 CFQ =2.502.4.2 K(Z) is provided in Figure 2.2A3 F aw (Z) = Fq"(Z)
* K(z) forP( 0.5Where P : Thermal Power / Rated Thermal Power2.4.1 CFQ =2.502.4.2 K(Z) is provided in Figure 2.2A3 F aw (Z) = Fq"(Z)
* W(Z)1P for P > 0.5Fq*(Z) = Fq"(4
* W(Z)1P for P > 0.5Fq*(Z) = Fq"(4
* W(4t0.5 for P < 0.5where: W(Z) values are provided in Table A.l. The table provides suffrcientinformation to determine W(Z) versus core height for all cycle burnups.2.4.4 Part power W(Z) values are only required to be used when the part power surveillanceis performed using the moveable incore detector system.2.4.5 Faw(Z) Penalty FactorThe Faw(Z) penalty factor is provided in Table A.2.Park Position (steps)225226227228229230231Bank Overlap (steps)109110llltt2I l3114115B ank Difference (steps)116116116116116116I l6Cycle 13Revision 0Page 4 of 10 2.5 NUCLEAR ENTHALPY RrSE HOT CHAI\NEL FACTOR- FasN (LCO 3.2.2)F**iF*** * ( 1 +PF * ( 1-P))where P = Thermal Power / Rated Thermal PowerF*"* = 1.65 forMA-2 fuel, andPF = 0.32.6 AXrAL FLUX DIFFERENCE - AFD (LCO 3.2.3)2.6.1 The AFD limits for Cycle 13 are provided in Figure 3.2.7 REFITELTNG BORON CONCENTRATION (LCO 3.9.1)2.7.1 The refueling boron concentration shall be ) 2000 ppm.2.8 ACCUMULATORS (LCO 3.5.1)2.8.1 There are 704 tritium producing bumable absorber rods (TPBARs) in the reactor corefor Cycle 13.2.9 REFUELTNG WATER STORAGE TAIIK - RWST (LCO 3.5.4)2.9. 1 There are 704 tritium producing bumable absorber rods (TPBARs) in the reactor corefor Cycle 13.Unit IWATTS BARCycle 13Revision 0Page 5 of l0 2502252005025Unit IWATTS BAR? L7sG,a-IE=ffiotn4lr!F9=" L25-F6oo.o.H 100tn-z661?ot)c,re22slit(0.197, 2251t 4 a z - - -.D //.r,,,.'-...,.? / /.,I)i3 il /., 2 il + De'4'-'...-,,Z1,,,,,., ......',.I,7^l/-Dii/o l,., i,lrlf:',,. ". ::.':::",:, i,l-I (0.0, 190),:^/iI' " - ;.' -'---*' l -"'"* "
* W(4t0.5 for P < 0.5where: W(Z) values are provided in Table A.l. The table provides suffrcient information to determine W(Z) versus core height for all cycle burnups.2.4.4 Part power W(Z) values are only required to be used when the part power surveillance is performed using the moveable incore detector system.2.4.5 Faw(Z) Penalty FactorThe Faw(Z) penalty factor is provided in Table A.2.Park Position (steps)225226227228229230231Bank Overlap (steps)109110llltt2I l3114115B ank Difference (steps)116116116116116116I l6Cycle 13Revision 0Page 4 of 10 2.5 NUCLEAR ENTHALPY RrSE HOT CHAI\NEL FACTOR- FasN (LCO 3.2.2)F**iF***  
* i- "t.:*i'**"i"-*" ,,t *7/!,t^/\NKql-i,,...,,. ",,.,",.,,,,,,,,/i--*7,---'i *--T*-"**:",7:1/:::iil -,,..,..,,,.,...."....).....,.............,.',i,^/,I/tlft.1^l//'i//'1*******1it^/),,/ii/t,i/14"i,i1//T,-11i,,j,,,,,,,,,,,,,,,,,,,,, -,, !=/11,^1 tlixt.tI^/111,iCycle 13Revision 00.0o.20,40.50.81.0FRAC.tloN OF RATEDTHERMAT POWERFigure IControl Bank Insertion Limits Versus Thermal PowerFour Loop OperationFully withdrawn region shall be the condition where shutdown and control ba::ks are at a positionwithin the interval of 2225 and,323l steps withdrawnPage 6 of l0 1.11.21.00.90.8o.70.60.5o.40.3o.20.10L(t)=oo-{.olJ-E(I).N-(trELo=20468Core Height (feet)Figure 2K(Z) - Normalized Fq(Z) as a Function of Core Height1012Unit IWATTS BARCycle 13Revision 0E--Heioht K{ZIloI6000 1.000000 1.oo0I 12,ooo0.9256Page 7 of l0 1 F1z,1-I(7 , 10r-I00)r0)rI\IFiACCeptaDreOperation\II\""*ptdSperatiolGt-r--]--_l unacceptaDle r--l ooeration L-I\t--tI\I\I\I\I\@-50 40 20 -10 0 10 20 30 40 50Flux Difierence (Al) %Figure 3Axial Flux Difference Acceptable Operation Limits as a function of Rated Thermal Power (RAOC)120110100908040302010Unit 1WATTS BARb=oL70EEofooE'g(UfsoosCycle 13Revision 0Page 8 of l0 Unit IWATTS BARTable A.1Fq*(Z):Fqt(Z)*W(Z)Cycle 13Revision 0Height(ft)Max W(z)at 150MWDA{TU(30%Power)Max W(z)at 150MWDA{TU(7s%Power)Max W(z)at 150MWDA{TU(t00%Power)Max W(z)at 2000MWDA{TU(100o/oPower)Max W(z)at 10000MWDA/ITU(r00%Power)Max W(z)at 16000MWDA{TU(100%Power)12.0748r.00001.00001.00001.00001.00001.000011.87361.0000r.00001.00001.00001.0000r.000011.67231.00001.00001.00001.00001.00001,0000tt.47tt1.00001.00001.00001.00001.00001.0000u.2698r.00001.00001.0000r.00001.00001,000011.0686r.00001.00001.00001.00001,00001.000010.86731.26471.2807l.213l1.2352r.r969r.218910.66611.25101.26221.20961.23411.19001.211610.46481.23361.23911.2037r.23091.18511.200210.26361.21,401.21781.19681.2308r.r7861.1952r0.06231.20191.20381.19501.2293l.l7141.17559.8611l.l9l91.19191.19521.2263l.162l1.16929.65981.18051.17891.19451.22391.15571.16109.45861.16601.1637l.l9l41.21871.15961.15249.25731.15071.14821.1874t.ztm1.1639l.l47l9.0s61r.13671.13491.18501.2096l.l6g01.14938.85491.1220l.l2l71.18081.21321.17351.15298.6536l.l14lt.tt44t.t7961.21791.18291.15888.45241.12281.r2331.19391.22251.19851.17908.251r1.12221.13291.2079t.224rl.2l151.19708.04991.10971.14021.2185r.22341.22151.2rr87.84861.09091.1461r.22661.21971.22921.22477.il741.08041.15031.23t91.21531.23431.23s07.4/,611.07071.15301.23461.21751.23681.24287.24/i91.06231.15381.23491.21681.23681.24797.04361.05661.15231.23271.21341.234d1.25066.8/,24r.05171.14921.22871.20861.2298r.2s086.64111.04771.14581.22311.20241.22311.24896.43991.04411.14151.21571.1943t.ztu1.24526.23861.04171.13741.20801.18431.20371.23936.0374r.04061.13431.20151.17s1l.l9l5t.2312s.8362r.03961.13071.19421.16671.1772l.22lls.6349r.03841.12631.18581.r5831.1il91.20895.43371.03941.12361.17921.15251.16161.19495.23241.0414t.t2t41.17271.14991.r583l.l83l5.03121.04341.11871.16541.14791.15391.18014.8299L44771.11801.15981.1450l.l52l1.17944.62871.0549l.ll971.1567t.t4t41.15291.17674.42741.05081.11961.15221.13701.15261.17334.22621.06661.11961.t470r.13201.15191.16894.02491.07211.1175l.l4l41.1267r.15051.16363.82371.07il1.11501.13431.1202r.14981.15783.6224r.08291.11451.1292l.ll5l1.15091.15143.42121.09621.12041.13091.ll521.15531.14s13.21991.1il21.1274r.1336l.11621.15161.14553.0r87t.l2s11.13351.13501.1255l.lu61.14992.81751.14181.1420l.l3ggl.l4/,g1.17241.16312.61621.1663t.15791.14991.16851.18931.18232.4150l.l9g51.1810r.r6831.19191.2088r.20042.21371.23371.20611.18871.21531.2280r.2r802.012sr.26811.23101.20881.23831.24661.23511.81121.30211.25551.22821.250sL2A41.25141.61001.33761.27931.24661.2816l.28ll1.2666r.40871.37021.30081.26311.30051.29581,28001.20751.39891.31841.27651.31631.30731.29031.00621.00001.00001.00001.0000r.00001.00000.80501.00001.00001.0000r.00001,00001.00000.60371.00001.00001.00001.00001.00001,00000,40251.00001.00001.00001.00001.00001.00000.20121.00001.00001.00001.00001.00001.00000.00001.00001.00001.00001.00001.00001.0000Page 9 of 10 Table A.2Fo*(Z) Penalty FactorCoreBurnupGrnwD/IvITfI)Fa"(JPenaltyFactorAll Elurnrrps1.O?OONote:1. The Penalty Factor, which is applied to Faw(Z) for compliance with Surveillance Requirement3.2.1.2.a,is the maximum factor by which Fq*(Z) is expected to increase per 3l Effective Full PowerDays (EFPD) starting from the bumup at which the fowlZ; was deterrrined.Unit IWATTS BARCycle 13Revision 0Page l0 of l0}}
* ( 1 +PF * ( 1-P))where P = Thermal Power / Rated Thermal PowerF*"* = 1.65 forMA-2 fuel, andPF = 0.32.6 AXrAL FLUX DIFFERENCE  
- AFD (LCO 3.2.3)2.6.1 The AFD limits for Cycle 13 are provided in Figure 3.2.7 REFITELTNG BORON CONCENTRATION (LCO 3.9.1)2.7.1 The refueling boron concentration shall be ) 2000 ppm.2.8 ACCUMULATORS (LCO 3.5.1)2.8.1 There are 704 tritium producing bumable absorber rods (TPBARs) in the reactor corefor Cycle 13.2.9 REFUELTNG WATER STORAGE TAIIK - RWST (LCO 3.5.4)2.9. 1 There are 704 tritium producing bumable absorber rods (TPBARs) in the reactor corefor Cycle 13.Unit IWATTS BARCycle 13Revision 0Page 5 of l0 2502252005025Unit IWATTS BAR? L7sG,a-IE=ffiotn4lr!F9=" L25-F6oo.o.H 100tn-z661?ot)c,re22slit(0.197, 2251t 4 a z - - -.D //.r,,,.'-...,.?  
/ /.,I)i3 il /., 2 il + De'4'-'...-,,
Z1,,,,,.,  
......',.
I,7^l/-Dii/o l,., i,lrlf:',,. ". ::.':::",:,
i,l-I (0.0, 190),:^/iI' " - ;.' -'---*' l -"'"* "
* i- "t.:*i'**"i"-*"  
,,t *7/!,t^/\NKql-i,,...,,.  
",,.,",.,,,,,,,,
/i--*7,---'
i *--T*-"**
:",7:1/:::iil -,,..,..,,,.,...."....).....,.............,.
',i,^/,I/tlft.1^l//'i//'1*******
1it^/),,/ii/t,i/14"i,i1//T,-11i,,j,,,,,,,,,,,,,,,,,,,,,  
-,, !=/11,^1 tlixt.tI^/111,iCycle 13Revision 00.0o.20,40.50.81.0FRAC.tloN OF RATEDTHERMAT POWERFigure IControl Bank Insertion Limits Versus Thermal PowerFour Loop Operation Fully withdrawn region shall be the condition where shutdown and control ba::ks are at a positionwithin the interval of 2225 and,323l steps withdrawn Page 6 of l0 1.11.21.00.90.8o.70.60.5o.40.3o.20.10L(t)=oo-{.olJ-E(I).N-(trELo=20468Core Height (feet)Figure 2K(Z) - Normalized Fq(Z) as a Function of Core Height1012Unit IWATTS BARCycle 13Revision 0E--Heioht K{ZIloI6000 1.000000 1.oo0I 12,ooo0.9256Page 7 of l0 1 F1z,1-I(7 , 10r-I00)r0)rI\IFiACCeptaDre Operation
\II\""*ptdSperatiol Gt-r--]--_l unacceptaDle r--l ooeration L-I\t--tI\I\I\I\I\@-50 40 20 -10 0 10 20 30 40 50Flux Difierence (Al) %Figure 3Axial Flux Difference Acceptable Operation Limits as a function of Rated Thermal Power (RAOC)120110100908040302010Unit 1WATTS BARb=oL70EEofooE'g(UfsoosCycle 13Revision 0Page 8 of l0 Unit IWATTS BARTable A.1Fq*(Z):Fqt(Z)*W(Z)
Cycle 13Revision 0Height(ft)Max W(z)at 150MWDA{TU(30%Power)Max W(z)at 150MWDA{TU(7s%Power)Max W(z)at 150MWDA{TU(t00%Power)Max W(z)at 2000MWDA{TU(100o/oPower)Max W(z)at 10000MWDA/ITU(r00%Power)Max W(z)at 16000MWDA{TU(100%Power)12.0748r.00001.00001.00001.00001.00001.000011.87361.0000r.00001.00001.00001.0000r.000011.67231.00001.00001.00001.00001.00001,0000tt.47tt1.00001.00001.00001.00001.00001.0000u.2698r.00001.00001.0000r.00001.00001,000011.0686r.00001.00001.00001.00001,00001.000010.86731.26471.2807l.213l1.2352r.r969r.218910.66611.25101.26221.20961.23411.19001.211610.46481.23361.23911.2037r.23091.18511.200210.26361.21,401.21781.19681.2308r.r7861.1952r0.06231.20191.20381.19501.2293l.l7141.17559.8611l.l9l91.19191.19521.2263l.162l1.16929.65981.18051.17891.19451.22391.15571.16109.45861.16601.1637l.l9l41.21871.15961.15249.25731.15071.14821.1874t.ztm1.1639l.l47l9.0s61r.13671.13491.18501.2096l.l6g01.14938.85491.1220l.l2l71.18081.21321.17351.15298.6536l.l14lt.tt44t.t7961.21791.18291.15888.45241.12281.r2331.19391.22251.19851.17908.251r1.12221.13291.2079t.224rl.2l151.19708.04991.10971.14021.2185r.22341.22151.2rr87.84861.09091.1461r.22661.21971.22921.22477.il741.08041.15031.23t91.21531.23431.23s07.4/,611.07071.15301.23461.21751.23681.24287.24/i91.06231.15381.23491.21681.23681.24797.04361.05661.15231.23271.21341.234d1.25066.8/,24r.05171.14921.22871.20861.2298r.2s086.64111.04771.14581.22311.20241.22311.24896.43991.04411.14151.21571.1943t.ztu1.24526.23861.04171.13741.20801.18431.20371.23936.0374r.04061.13431.20151.17s1l.l9l5t.2312s.8362r.03961.13071.19421.16671.1772l.22lls.6349r.03841.12631.18581.r5831.1il91.20895.43371.03941.12361.17921.15251.16161.19495.23241.0414t.t2t41.17271.14991.r583l.l83l5.03121.04341.11871.16541.14791.15391.18014.8299L44771.11801.15981.1450l.l52l1.17944.62871.0549l.ll971.1567t.t4t41.15291.17674.42741.05081.11961.15221.13701.15261.17334.22621.06661.11961.t470r.13201.15191.16894.02491.07211.1175l.l4l41.1267r.15051.16363.82371.07il1.11501.13431.1202r.14981.15783.6224r.08291.11451.1292l.ll5l1.15091.15143.42121.09621.12041.13091.ll521.15531.14s13.21991.1il21.1274r.1336l.11621.15161.14553.0r87t.l2s11.13351.13501.1255l.lu61.14992.81751.14181.1420l.l3ggl.l4/,g1.17241.16312.61621.1663t.15791.14991.16851.18931.18232.4150l.l9g51.1810r.r6831.19191.2088r.20042.21371.23371.20611.18871.21531.2280r.2r802.012sr.26811.23101.20881.23831.24661.23511.81121.30211.25551.22821.250sL2A41.25141.61001.33761.27931.24661.2816l.28ll1.2666r.40871.37021.30081.26311.30051.29581,28001.20751.39891.31841.27651.31631.30731.29031.00621.00001.00001.00001.0000r.00001.00000.80501.00001.00001.0000r.00001,00001.00000.60371.00001.00001.00001.00001.00001,00000,40251.00001.00001.00001.00001.00001.00000.20121.00001.00001.00001.00001.00001.00000.00001.00001.00001.00001.00001.00001.0000Page 9 of 10 Table A.2Fo*(Z) Penalty FactorCoreBurnupGrnwD/IvITfI)
Fa"(JPenaltyFactorAll Elurnrrps 1.O?OONote:1. The Penalty Factor, which is applied to Faw(Z) for compliance with Surveillance Requirement 3.2.1.2.a,is the maximum factor by which Fq*(Z) is expected to increase per 3l Effective Full PowerDays (EFPD) starting from the bumup at which the fowlZ; was deterrrined.
Unit IWATTS BARCycle 13Revision 0Page l0 of l0}}

Revision as of 15:55, 1 July 2018

Watts Bar, Unit 1, Revision 0 of the Cycle 13 Core Operating Limits Report (Colr)
ML14141A084
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 05/20/2014
From: Church C R
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML14141A084 (13)
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{{#Wiki_filter:Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 May 20,2014ATTN: Document Control DeskU. S. Nuclear Regulatory Commission Washington, D.C. 20555-0001

Subject:

10 cFR 5A.4Watts Bar Nuclear Plant, Unit 1Facility Operating License No. NPF-90NRC Docket No.50-390 REVISION O OF THE CYCLE 13 GORE OPERATING LIII'IITS REPORT(coLR)Pursuant to Watts Bar Nuclear Plant Technical Specifications Section 5.9.5.d,Tennessee Valley Authority (TVA) has enclosed Revision 0 of the Unit 1 Cycle 13COLR. The analytical methods used to determine the core operating limits werepreviously reviewed and approved by the NRC.There are no regulatory commitments contained in this letter or the enclosure. Shouldyou have questions regarding this submittal, please contact Russell A. Stroud at (423)365-1435. Respectfully, %,,44*"k6nristopner R. church /Site Vice President Watts Bar Nuclear PlantWatts Bar Nuclear Plant, Unit 1, Cycle 13 Core Operating Limits ReportRevision 0 March 2014

Enclosure:

U.S. Nuclear Regulatory Commission Page 2cc (Enclosure): NRC Regional Administrator - Region llNRR Project Manager - Watts Bar Nuclear PlantNRC Senior Resident lnspector - Watts Bar Nuclear Plant, Unit 1 Enclosure Watts Bar Nuclear Plant, Unit 1, Cycle 13Core Operating Limits ReportRevision 0March 2014 Prepared by:QA Record136 140320 800WATTS BAR NUCLEAR PIANT, UNIT 1, CYCLE 13CORE OPERATING LIMITS REPORTRevision 0March 2014DateLJ/C L,!,^tu*u ,n., ,@nase' oai-f, +14qReviewed by:3r.t m .E'rc,l* ^ t I /25 /zo*Manager, PWR Nuclear Fuels Engineering Approved by:0.P b,eokar*n PORC ChairmanPlant ManagerRevisionDate ofPORCApprovalPORCMeetingNumberAffectedPaqesReason fnr Revision03'27, tt{{14{allinitial issueUnit 1Watts BarCycle 13Revision 0Page 1 of 10 1.02.0Unit IWATTS BARBOLAROHZPEOLRTPCORE OPERATING LIMITS REPORTThis Core Operating Limits Report (COLR) for Watts Bar Unit 1 Cycle 13 has been prepared inaccordance with the requirements of the Technical Specifications 5.9.5.The Technical Specifications affected by this report are listed below:3.1.4 Moderator Temperature Coefficient (MTC)3.1.6 Shutdown Bank Insertion Limits3.I.7 Control Bank Insertion Limits3.2.1 Heat Flux Hot Channel Factor (Fq(Z))3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (Far)3.2.3 Axial Flux Difference (AFD)3.5.1 Accumulators 3.5.4 Refueling Water Storage Tank (RWST)3.9.I BoronConcentration OPERATINGLIMITS The cycle-specific parameter limits for the specifications listed in section 1.0 are presented in thefollowing subsections. These limits have been developed using the NRC approvedmethodologies specified in the Technical Specifications Section 5.9.5.The following abbreviations are used in this section:Beginning of Cycle LifeA11 Rods OutHot Zero Thermal PowerEnd of Cycle LifeRated Thermal PowerCycle 13Revision 0Page 2 of 10 2.1 MODERATOR TEMPERATURE COEF'F'ICIENT . MTC (LCO 3.1.4)2.1.1 The MTC limits are:The AROIHZP - MTC shall be less positive than or equal to 0 AldldoF (upper limil.With the measured BOL/ARO/HZP - MTC more positive than -1.17 x l0-5 Ak/ldoF(as-measured MTC limit), establish confrol rod withdrawal limits to ensure the MTCremains less positive than or equal to 0 AldldoF (upper limit) for all times in core life.The EOL/ARO/RTP - MTC shall be less negative than or equal to4.5 x 104 LklW"F (lowerlimi!. 2.1.2 The 300 ppm surveillance limit is:The measured 300 ppm /ARO/RTP-MTC should be less negative than or equal to-3.75 x 104 Ak/ldoF.2.1.3 The 60 ppm surveillance limit is:The measured 60 ppm /ARO/RTP-MTC should be less negative than or equal to4.28x 104 Ak/l/oF.2.2 SHUTDOWN BAIIK INSERTION LIMTTS (LCO 3.1.6)2.2.1 The shutdown banks shall be withdrawn to a position greater than or eqtnlto 225steps withdrawn. 2.3 CONTROL BArYK INSERTION LrLrTS (LCO 3.1.42.3.1 The control banks are fully withdrawn or shall be limited in physical insertion asshown in Figure 1.2.3.2Eachcontrol bank shall be considered fully withdrawn from the core at greater than orequal to 225 steps.2.3.3 Thecontrol banks shall be operated in sequence by withdrawal of Bank A, Bank B,Bank C, and Bank D. The confrol banla shall be sequenced in reverse order uponinsertion. Cycle 13Revision 0Unit IWATTS BARPage 3 of l0 2.3.4Each control bank not fully withdrawn from the core shall be operated with thefollowing overlap as a fimction of park position. 2.4Unit IWATTS BARHEAT FLUX HOT CHANNEL FACTOR -Fo(Z) (LCO 3.2.1)Fa(Z) s [CFQ/ P]

  • K(Z) for P > 0.5Fq(Z)< [CFQ/0.s]
  • K(z) forP( 0.5Where P : Thermal Power / Rated Thermal Power2.4.1 CFQ =2.502.4.2 K(Z) is provided in Figure 2.2A3 F aw (Z) = Fq"(Z)
  • W(Z)1P for P > 0.5Fq*(Z) = Fq"(4
  • W(4t0.5 for P < 0.5where: W(Z) values are provided in Table A.l. The table provides suffrcient information to determine W(Z) versus core height for all cycle burnups.2.4.4 Part power W(Z) values are only required to be used when the part power surveillance is performed using the moveable incore detector system.2.4.5 Faw(Z) Penalty FactorThe Faw(Z) penalty factor is provided in Table A.2.Park Position (steps)225226227228229230231Bank Overlap (steps)109110llltt2I l3114115B ank Difference (steps)116116116116116116I l6Cycle 13Revision 0Page 4 of 10 2.5 NUCLEAR ENTHALPY RrSE HOT CHAI\NEL FACTOR- FasN (LCO 3.2.2)F**iF***
  • ( 1 +PF * ( 1-P))where P = Thermal Power / Rated Thermal PowerF*"* = 1.65 forMA-2 fuel, andPF = 0.32.6 AXrAL FLUX DIFFERENCE

- AFD (LCO 3.2.3)2.6.1 The AFD limits for Cycle 13 are provided in Figure 3.2.7 REFITELTNG BORON CONCENTRATION (LCO 3.9.1)2.7.1 The refueling boron concentration shall be ) 2000 ppm.2.8 ACCUMULATORS (LCO 3.5.1)2.8.1 There are 704 tritium producing bumable absorber rods (TPBARs) in the reactor corefor Cycle 13.2.9 REFUELTNG WATER STORAGE TAIIK - RWST (LCO 3.5.4)2.9. 1 There are 704 tritium producing bumable absorber rods (TPBARs) in the reactor corefor Cycle 13.Unit IWATTS BARCycle 13Revision 0Page 5 of l0 2502252005025Unit IWATTS BAR? L7sG,a-IE=ffiotn4lr!F9=" L25-F6oo.o.H 100tn-z661?ot)c,re22slit(0.197, 2251t 4 a z - - -.D //.r,,,.'-...,.? / /.,I)i3 il /., 2 il + De'4'-'...-,, Z1,,,,,., ......',. I,7^l/-Dii/o l,., i,lrlf:',,. ". ::.':::",:, i,l-I (0.0, 190),:^/iI' " - ;.' -'---*' l -"'"* "

  • i- "t.:*i'**"i"-*"

,,t *7/!,t^/\NKql-i,,...,,. ",,.,",.,,,,,,,, /i--*7,---' i *--T*-"**

",7:1/:::iil -,,..,..,,,.,...."....).....,.............,.

',i,^/,I/tlft.1^l//'i//'1******* 1it^/),,/ii/t,i/14"i,i1//T,-11i,,j,,,,,,,,,,,,,,,,,,,,, -,, !=/11,^1 tlixt.tI^/111,iCycle 13Revision 00.0o.20,40.50.81.0FRAC.tloN OF RATEDTHERMAT POWERFigure IControl Bank Insertion Limits Versus Thermal PowerFour Loop Operation Fully withdrawn region shall be the condition where shutdown and control ba::ks are at a positionwithin the interval of 2225 and,323l steps withdrawn Page 6 of l0 1.11.21.00.90.8o.70.60.5o.40.3o.20.10L(t)=oo-{.olJ-E(I).N-(trELo=20468Core Height (feet)Figure 2K(Z) - Normalized Fq(Z) as a Function of Core Height1012Unit IWATTS BARCycle 13Revision 0E--Heioht K{ZIloI6000 1.000000 1.oo0I 12,ooo0.9256Page 7 of l0 1 F1z,1-I(7 , 10r-I00)r0)rI\IFiACCeptaDre Operation \II\""*ptdSperatiol Gt-r--]--_l unacceptaDle r--l ooeration L-I\t--tI\I\I\I\I\@-50 40 20 -10 0 10 20 30 40 50Flux Difierence (Al) %Figure 3Axial Flux Difference Acceptable Operation Limits as a function of Rated Thermal Power (RAOC)120110100908040302010Unit 1WATTS BARb=oL70EEofooE'g(UfsoosCycle 13Revision 0Page 8 of l0 Unit IWATTS BARTable A.1Fq*(Z):Fqt(Z)*W(Z) Cycle 13Revision 0Height(ft)Max W(z)at 150MWDA{TU(30%Power)Max W(z)at 150MWDA{TU(7s%Power)Max W(z)at 150MWDA{TU(t00%Power)Max W(z)at 2000MWDA{TU(100o/oPower)Max W(z)at 10000MWDA/ITU(r00%Power)Max W(z)at 16000MWDA{TU(100%Power)12.0748r.00001.00001.00001.00001.00001.000011.87361.0000r.00001.00001.00001.0000r.000011.67231.00001.00001.00001.00001.00001,0000tt.47tt1.00001.00001.00001.00001.00001.0000u.2698r.00001.00001.0000r.00001.00001,000011.0686r.00001.00001.00001.00001,00001.000010.86731.26471.2807l.213l1.2352r.r969r.218910.66611.25101.26221.20961.23411.19001.211610.46481.23361.23911.2037r.23091.18511.200210.26361.21,401.21781.19681.2308r.r7861.1952r0.06231.20191.20381.19501.2293l.l7141.17559.8611l.l9l91.19191.19521.2263l.162l1.16929.65981.18051.17891.19451.22391.15571.16109.45861.16601.1637l.l9l41.21871.15961.15249.25731.15071.14821.1874t.ztm1.1639l.l47l9.0s61r.13671.13491.18501.2096l.l6g01.14938.85491.1220l.l2l71.18081.21321.17351.15298.6536l.l14lt.tt44t.t7961.21791.18291.15888.45241.12281.r2331.19391.22251.19851.17908.251r1.12221.13291.2079t.224rl.2l151.19708.04991.10971.14021.2185r.22341.22151.2rr87.84861.09091.1461r.22661.21971.22921.22477.il741.08041.15031.23t91.21531.23431.23s07.4/,611.07071.15301.23461.21751.23681.24287.24/i91.06231.15381.23491.21681.23681.24797.04361.05661.15231.23271.21341.234d1.25066.8/,24r.05171.14921.22871.20861.2298r.2s086.64111.04771.14581.22311.20241.22311.24896.43991.04411.14151.21571.1943t.ztu1.24526.23861.04171.13741.20801.18431.20371.23936.0374r.04061.13431.20151.17s1l.l9l5t.2312s.8362r.03961.13071.19421.16671.1772l.22lls.6349r.03841.12631.18581.r5831.1il91.20895.43371.03941.12361.17921.15251.16161.19495.23241.0414t.t2t41.17271.14991.r583l.l83l5.03121.04341.11871.16541.14791.15391.18014.8299L44771.11801.15981.1450l.l52l1.17944.62871.0549l.ll971.1567t.t4t41.15291.17674.42741.05081.11961.15221.13701.15261.17334.22621.06661.11961.t470r.13201.15191.16894.02491.07211.1175l.l4l41.1267r.15051.16363.82371.07il1.11501.13431.1202r.14981.15783.6224r.08291.11451.1292l.ll5l1.15091.15143.42121.09621.12041.13091.ll521.15531.14s13.21991.1il21.1274r.1336l.11621.15161.14553.0r87t.l2s11.13351.13501.1255l.lu61.14992.81751.14181.1420l.l3ggl.l4/,g1.17241.16312.61621.1663t.15791.14991.16851.18931.18232.4150l.l9g51.1810r.r6831.19191.2088r.20042.21371.23371.20611.18871.21531.2280r.2r802.012sr.26811.23101.20881.23831.24661.23511.81121.30211.25551.22821.250sL2A41.25141.61001.33761.27931.24661.2816l.28ll1.2666r.40871.37021.30081.26311.30051.29581,28001.20751.39891.31841.27651.31631.30731.29031.00621.00001.00001.00001.0000r.00001.00000.80501.00001.00001.0000r.00001,00001.00000.60371.00001.00001.00001.00001.00001,00000,40251.00001.00001.00001.00001.00001.00000.20121.00001.00001.00001.00001.00001.00000.00001.00001.00001.00001.00001.00001.0000Page 9 of 10 Table A.2Fo*(Z) Penalty FactorCoreBurnupGrnwD/IvITfI) Fa"(JPenaltyFactorAll Elurnrrps 1.O?OONote:1. The Penalty Factor, which is applied to Faw(Z) for compliance with Surveillance Requirement 3.2.1.2.a,is the maximum factor by which Fq*(Z) is expected to increase per 3l Effective Full PowerDays (EFPD) starting from the bumup at which the fowlZ; was deterrrined. Unit IWATTS BARCycle 13Revision 0Page l0 of l0}}

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