NL-03-1858, Cycle 12 and Unit 2 Cycle 10 Core Operating Limits Reports

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Cycle 12 and Unit 2 Cycle 10 Core Operating Limits Reports
ML032801503
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 10/02/2003
From: Gasser J
Southern Nuclear Operating Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-03-1858
Download: ML032801503 (31)
v • d • e


Text

Jeffrey T.Gasser Southern Nuclear Vice President Operating Company, Inc.

40 Inverness Center Parkway Post Office Box 1295 Birmingham, Alabama 35201 Tel 205.992.7721 Fax 205.992.0403 SOUTHERN A October 2, 2003 COMPANY Energy to Serve YourWorld w Docket Nos.: 50-424 NL-03-1858 50-425 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Vogtle Electric Generating Plant Unit 1 Cycle 12 and Unit 2 Cycle 10 Core Operating Limits Reports Ladies and Gentlemen:

Pursuant to the reporting requirements of Vogtle Electric Generating Plant (VEGP)

Technical Specification 5.6.5, Southern Nuclear Operating Company (SNC) is submitting Revision 0 of the Unit I Cycle 12 Core Operating Limits Report (COLR) and Revision I of the Unit 2 Cycle 10 COLR.

This letter contains no NRC commitments. If you have any questions, please advise.

Sincerely, Je y T. Gasser JTG/RJF

Enclosures:

Unit I Cycle 12 and Unit 2 Cycle 10 Core Operating Limits Reports cc: Southern Nuclear Operating Company Mr. J. D. Woodard, Executive Vice President Mr. W. F. Kitchens, General Manager - Plant Vogtle Mr. M. Sheibani, Engineering Supervisor - Plant Vogtle Document Services RTYPE: CVC7000 U. S. Nuclear Regulatory Commission Mr. L. A. Reyes, Regional Administrator Mr. F. Rinaldi, NRR Project Manager - Vogtle Mr. J. Zeiler, Senior Resident Inspector - Vogtle AC) C)(

VOGTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 1 CYCLE 12 CORE OPERATING LIMITS REPORT REVISION 0 SEPTEMBER 2003

COLR for VEGP UNIT 1 CYCLE 12 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for VEGP UNIT 1 CYCLE 12 has been prepared in accordance with the requirements of Technical Specification 5.6.5.

The Technical Requirement affected by this report is listed below:

13.1.1 SHUTDOWN MARGIN - MODES I and 2 The Technical Specifications affected by this report are listed below:

3.1.1 SHUTDOWN MARGIN - MODES 3,4 and 5 3.1.3 Moderator Temperature Coefficient 3.1.5 Shutdown Bank Insertion Limits 3.1.6 Control Bank Insertion Limits 3.2.1 Heat Flux Hot Channel Factor - FQ(Z) 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor - FAH 3.2.3 Axial Flux Difference 3.9.1 Boron Concentration PAGE 1 of 14

COLR for VEGP UNIT 1 CYCLE 12 2.0 OPERATING LIMITS The cycle-specific parameter limits for the specifications listed in section 1.0 are presented in the following subsections. These limits have been developed using NRC-approved methodologies, including those specified in Technical Specification 5.6.5.

2.1 SHUTDOWN MARGIN - MODES 1 AND 2 (Technical Requirement 13.1.1) 2.1.1 The SHUTDOWN MARGIN shall be greater than or equal to 1.30 percent Ak/k.

2.2 SHUTDOWN MARGIN - MODES 3.4 AND 5 (Specification 3.1.1) 2.2.1 The SHUTDOWN MARGIN shall be greater than or equal to the limits shown in Figures 1 and 2.

2.3 Moderator Temperature Coefficient (Specification 3.1.3) 2.3.1 The Moderator Temperature Coefficient (MTC) limits are:

The BOIJARO/HZP - MTC shall be less positive than +0.7 x 104 Ak/kPF for power levels up to 70 percent RTP with a linear ramp to 0 Ak/kPF at 100 percent RTP.

The EOIARO/RTP-MTC shall be less negative than

-5.50 x 10 Ak/kfPF.'

2.3.2 The MTC Surveillance limits are:

The 300 ppm/ARO/RTP-MTC should be less negative than or equal to -4.75 x 104 Ak/k&F. 1 The 60 ppm/ARO/RTP-MTC should be less negative than

-5.35 x 10-4 hk/kF.1 where: BOL stands for Beginning of Cycle Life ARO stands for All Rods Out HZP stands for Hot Zero THERMAL POWER EOL stands for End of Cycle Ufe RTP stands for RATED THERMAL POWER 2.4 Shutdown Bank Insertion Limits (Specification 3.1.5) 2.4.1 The shutdown banks shall be withdrawn to a position greater than or equal to 225 steps.

2.5 Control Bank Insertion Limits (Specification 3.1.6) 2.5.1 The control banks shall be limited in physical insertion as shown in Figure 3.

'Applicable for full-power T-average of 586.40 F to 587.40 F.

PAGE 2 of 14

COLR for VEGP UNIT 1 CYCLE 12 2.6 Heat Flux Hot Channel Factor - FQ(Z) (Specification 3.2.1)

RTP Fa 2.6.1 Fa(Z) *-

  • K(Z) for P > 0.5 P

RTP F0 Fa(Z)

  • 2 K(Z) for P
  • 0.5

0.5 where

P = THERMAL POWER RATED THERMAL POWER RTP 2.6.2 F0 = 2.50 2.6.3 K(Z) is provided in Figure 4.

RTP 2.6.4 FO(Z)

  • En K(Z) for P > 0.5 P W(Z)

RTP Fa(Z) s FQ

  • K(Z) for P < 0.5 0.5 *W(Z) 2.6.5 W(Z) values are provided in Figures 6 through 9.

2.6.6 The Fa(Z) penalty factors are provided in Table 1.

PAGE 3 of 14

COLR for VEGP UNIT 1 CYCLE 12 2.7 Nuclear EnthalDy Rise Hot Channel Factor - FaNH (Specification 3.2.2) 2.7.1 FIS

  • FRH * (1 + PFAH * (1-P))

where: P = THERMAL POWER RATED THERMAL POWER 2.7.2 FaRH = 1.65 2.7.3 PFAH = 0.3 2.8 Axial Flux Difference (Specification 3.2.3) 2.8.1 The Axial Flux Difference (AFD) acceptable operation limits are provided in Figure 5.

2.9 Boron Concentration (Specification 3.9.1) 2.9.1 The boron concentration shall be greater than or equal to 1905 ppm.'

'This concentration bounds the condition of kff < 0.95 (all rods in less the most reactive rod) and subcriticality fall rods out) over the entire cycle. This concentration includes additional boron to address uncertainties and B'0 depletion.

PAGE 4 of 14

COLR for VEGP UNIT 1 CYCLE 12 TABLE 1 Fa(Z) PENALTY FACTOR Cycle Fa(Z)

Burnup Penalty (MWD/MTU) Factor 150 1.020 363 1.032 576 1.036 789 1.033 1003 1.029 1216 1.023 1429 1.020 Notes:

1. The Penalty Factor, to be applied to Fa(Z) in accordance with SR 3.2.1.2, is the maximum factor by which Fa(Z) is expected to increase over a 39 EFPD interval (surveillance interval of 31 EFPD plus the maximum allowable extension not to exceed 25% of the surveillance interval per SR 3.0.2) starting from the burnup at which the Fa(Z) was determined.
2. Linear interpolation is adequate for intermediate cycle bumups.
3. For all cycle bumups outside the range of the table, a penalty factor of 1.020 shall be used.

PAGE 5 of 14

COLR for VEGP UNIT 1 CYCLE 12 5.00 4.00 ACCEPTABLE OPERATING REGION F

3.00. (2500, 3.1 3.00 REQUIRED SHUTDOWN 9 . ~~~~~MARGIN

.160002.

I 01 I UNACC EPTABLE X_______.__ OPERATING (950,1 .30) REGION 1.00 nnn

'I.wJI I

0 500 1000 1500 2000 2500 2175M1 RCS BORON CONCENTRATION (ppm)

FIGURE 1 REQUIRED SHUTDOWN MARGIN FOR MODES 3 AND 4 (FOUR LOOPS FILLED AND VENTED AND AT LEAST ONE REACTOR COOLANT PUMP RUNNING)

PAGE 6 of 14

COLR for VEGP UNIT 1 CYCLE 12 IfI. --. - . .

720,49 4.00 F 9 ACCEPTABLE OPERATING REGION l 3.00 (120 . 2.85)/

0 REQUIRED SHUTDOWN C', MARGIN I

§ 2.00 I

1.00 I _4 A /(460, 1.00)

I I*

UNACCEPTABLE OPERATING REGION

- I nnn U.

u.uu i

0 500 1000 1500 2000 2500 MM7s1 RCS BORON CONCENTRATION (ppm)

FIGURE 2 REQUIRED SHUTDOWN MARGIN FOR MODES 4 AND 5 (MODE 4 WHEN FIGURE 1 NOT APPLICABLE)

PAGE 7 of 14

COLR for VEGP UNIT 1 CYCLE 12 (Fully Withdrawn *)

161)

I I

E zI, 0

0 0 20 40 60 80 100 POWER (percent of Rated Thermal Power) 7$1 Fully wi shall be the condition where control rods are at a posi Won within the kItenrva] 2 and S231 steps withdrawn.

NOTE: The Rod Bank Insertion Umits are based on the controt bank withdrawal sequence A, B. C, D and a control bank tp-op distance of 115 steps.

FIGURE 3 ROD BANK INSERTION LIMITS VERSUS % OF RATED THERMAL POWER PAGE 8 of 14

COLR for VEGP UNIT 1 CYCLE 12 Jn.

1..&CU - - -

1.40 N 1 0.80 9

z 0.60C 2

C]

0 n-An-z Fo0 -2.50 Ii CORE HEIGHT -M, 0.20 - 0.000 1.0DO- I I I 6.000 1.0DO 25 12.000 0.9:

0 0 2.0 4.0 6.0 8.0 10.0 12.0 CORE HEIGHT (ft) 2l75-FIGURE 4 K(Z) - NORMALIZED FQ(Z) AS A FUNCTION OF CORE HEIGHT PAGE 9 of 14

COLR for VEGP UNIT 1 CYCLE 12 Is 1i . - - . - . . . . -

I I L _ I(15,

0) (+10.100) _

100 ~~~1 (1, 16)__

UNACCEPTABLE UNACCEPTABLE UNACCE.L . I I

80 0

QUV l ACCEPTABLE

0. (- 0, 50) (+26,50) 40 0 20- - - -

0' Lj====L.

-51Do -40 -30 10 I 0 m1 10 I 20I 30 I _i 50 40 AXIAL FLUX DIFFERENCE (percentA)

FIGURE 5 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF % OF RATED THERMAL POWER FOR RAOC PAGE 10 of 14

COLR for VEGP UNIT 1 CYCLE 12 Axial Eevation BOL Point (feet) WCZ) 12.00 1.0000

  • 2 11.80 1.0000

- - * ~~~~3 11.60 1.0000

  • 4 11.40 1.0000
  • 5 11.20 1.0000
  • 6 11.00 1.0000
  • 7 10.80 1.0000

_. 89 10.60 1.0000 10.40 1.0000

  • 10 10.20 1.0000 10.00 1.2600 9.80 1.2518 9.60 1.2419 9.40 1.2303 18 16 9.20 1.2210 19 9.00 1.2171 117 8.80 1.2148 8.60 1.2152 24 8.40 1.2208 8.20 1.2230

_--- 2124 26 8.00 1.2277 27 7.80 1.2321 28 7.60 1.2333 N

2268 7.40 1.2322 30 7.20 1.2290 7.00 1.2239 32 6.80 1.1929 33 6.60 1.1851 29 6.40 1.1773 6.20 1.1684 A 371 6.00 1.1580 37 5.80 1.1561 38 5.60 1.1606 5.40 1.1782 35 40 5.20 1.1938 41 36 5.00 1.2084 42 4.80 1.2227 4.60 1.2358 44 4.40 1.2481 35 4.20 12592 46 4.00 1.2689 47 3.80 1.2734

_ _ - 342 3.60 1.2764 49 3.40 1.2783 50 3.20 1.2827 51 3.00 1.2892 42 2.80 1.3049 2.60 1.3284 2.40 1.3500 55 2.20 1.3714 46 2.00 1.3925 1.80 1.0000 0.0 2.0 4.0 6.0 8.0 1.60 1.0000 1.40 1.0000 Core Height - feet 1.20 1.0000 1.00 1.0000

  • 57 0.80 1.0000 This figure Ir refemd to by Specification B3.2. 1
  • 58 0.60 1.0000
  • 59 0.40 1.0000 These W(Z) values are consistent with Figure 5, and are valid
  • 60 0.20 1.0000 over the HMP T,.g temperature range from 586.4 to S87A.F.
  • 61 0.00 1.0000

COLR for VEGP UNIT I CYCLE 12

_ A Elevation MOL-1 (fee) WZ) 12.00 1.0000

  • 2 11.80 1.0000

_

  • 3 11.60 1.0000
  • 4 11.40 1.0000 11.20 1.0000

]6 11.00 1.0000

  • 7 10.80 1.0000 10.60 1.0000
  • 9 10.40 1.0000
  • 10 10.20 1.0000 11 10.00 1.3294

- - 12 3 9.80 1.3240 13 9.60 1.3142 14 0.40 1.3001 15 9.20 1.2792 18 9.00 1.2567

_ 317 8.80 1.2429 18 8.60 1.2391 19 8.40 1.2381 20 8.20 1.2352

- - - 21 8.00 1.2354 22 7.80 1.2345 23 7.60 1.2304 24 7.40 1.2243 N 25 7.20 1.2162

- 1. 26 7.00 1.2064 27 6.80 1.1830 28 6.60 1.1710 29 6.40 1.1590

- -- ~~~30 6.20 1.1470

31. 6.00 1.1554 32 5.80 1.1490 33 5.60 1.1466 34 5.40 1;1507

-- ~~~~35 5.20 1.1583 36 5.00 1.1654 37 4.80 1.1718 38 4.60 1.1773

- -- ~~~39 4.40 1.1821 40 4.20 1.1873 41 4.00 1.1914 42 3.80 1.1978 43 3.60 1.2052 d 6044 3.40 1.2118 45 3.20 1.2171 46 3.00 1.2249 47 2.80 1.2355

- -- ~~~~48 2.60 1.2510 49 2.40 1.2737 50 2.20 1.2966 5I 2.00 1.3189

- - * ~~~52 1.80 1.0000

  • 53 1.60 1.0000 0.0 2.0 4.0 6.0 9.0 10.0 12. 0 54 1.40 1.0000 Core Height - feet
  • 55 1.20 1.0000
  • 56 1.00 1.0000
  • 57 0.80 1.0000 Th'E figure It referred to by Specificatdon B3.2.1
  • 58 0.60 1.0000
  • 59 0.40 1.0000 These W(Z) values are consistent with Figure 5, and are vall d * ~~~~~600.20 1.0000 over the 1M T=, temperature range from 586A to 587AT.

COLR for VEGP UNIT 1 CYCLE 12 Axia Elevation MOL-2 Point (fee* WZ) 12.00 1.0000

  • 2 11.80 1.0000 11.60 1.0000
  • 4 11.40 1.0000 8 5 11.20 1.0000
  • 66 11.00 1.0000
  • 7 10.80 1.0000 10.60 1.0000 10.40 1.0000
  • 10 10.20 1.0000 11 10.00 1.2793

-- - - - ~~~~~~12 9.80 1.2749 13 9.60 1.2679

- - - - - 14 16 9.40 1.2602 16 9.20 1.2486 9.00 1.2389 17 8.80 1.2261 18 8.60 1.2204 19 8.40 1.2244 20 8.20 1.2249

- - - - ~~~~~~21 8.00 1.2279 22 7.80 1.2326 23 7.60 1.2338 N

24 7.40 1.2327

-- - - - ~~~~25 7.20 1.2292 26 7.00 1.2234 28 6.80 1.2156 6.60 1.2059 6.40 1.1949

-_ --- - 30 6.20 1.1838 La 31 6.00 1.1731 32 5.80 1.1650 33 5.60 1.1638

_ - ___- 34 35 5.40 5.20 1.1692 1.1744 36 5.00 1.1784 37 4.80 1.1811 33 4.60 1.1825

-39 4.40 1.1825 40 4.20 1.1812 41 4.00 1.1786 42 3.80 1.1746

-- - - - ~~~~43 3.60 1.1699 44 3.40 1.1663 45 3.20 1.1665 46 3.00 1.1702 47 2.80 1.1787 2.60 1.1891 49 2.40 1.1988 so 2.20 1.2084 51 2.00 1.2179

-- - - - * ~~~52 1.80 1.0000 0.0 2.0 4.0

  • 53 1.60 1.0000 6.0 8.0 10.0 12.0 54 1.40 1.0000 Core Height - fei at ~

~ ~ ~

  • 55 1.20 1.0000
  • 56 1.00 1.0000
  • 57 0.80 1.0000 ThIs figure Isreferred to by Specificstli Du B3.2.1
  • 58 0.60 1.0000 0.40 1.0000 These W(Z) values are consistent with Figure 5, etnd are valid ' 60 0.20 1.0000 over the 1IFP T,,, temperature range from 586.4 to 587AF. 61 0.00 1.0000
  • Top and Bottom 1596 Excluded per Techn ,icalSpedfication B3.2.1 FIGURE 8 RAOC W(Z) AT 12000 MWD/MTU PAGE 13 of 14

COLR for VEGP UNIT 1 CYCLE 12 IL ]ILIIZ[I 1.6 _ Axial Elevation EOL Point (1et WO 1 12.00 1.0000 2 11.80 1.0000 3 11.60 1.0000 4 11.40 1.0000 S 11.20 1.0000 6 11.00 1.0000 7 10.80 1.0000

1. r 8 10.60 1.0000 9 10.40 1.0000 10 10.20 1.0000 11 10.00 1.2338 12 0.80 1.2316 13 0.60 1.2266 14 0.40 1.2260 15 0.20 1.2393 16 9.00 1.2481 1.4 - - 17 8.80 1.2559 18 8.60 1.2620 10 8.40 1.2673 20 8.20 1.2774 4---- 21 8.00 1.2838 22 7.80 1.2809 23 7.60 1.2912 24 7.40 1.2968 N'1 25 7.20 1.2992 1' 26 7.00 1.2983

"" 27 6.80 1.2945 MA 28 6.60 1.2879 29 6.40 1.2788 30 6.20 1.2673 31 6.00 1.2536 AAM 32 5.80 1.2424 33 5.60 1.2363 t 1is^1 A ^1'1&8,JAAA 0 34 35 36 37 38 39 40 5.40 5.20 5.00 4.80 4.60 4.40 4.20 1.2350 1.2378 1.2396 1.2390 1.2364 1.2316 1.2247 41 4.00 1.2156 42 3.80 1.2049 1 43 3.60 1.1945 44 3.40 1.1847 45 3.20 1.1728 46 3.00 1.1825 47 2.80 1.1871 48 2.60 1.1988 49 2.40 1.2090 50 2.20 1.2192 51 2.00 1.2295 A. - 52 1.80 1.0000 0.0 2.0 4.0 6.0 8.0 10.0 12.0

  • 53 1.60 1.0000 54 1.40 1.0000 Core Height - feet 55 1.20 1.0000 56 1.00 1.0000 57 0.80 1.0000 This figure is referred to by Specification B3.2.1 58 0.60 1.0000 59 0.40 1.0000 These W(Z) values are consistent with Figure 5, and are valid 60 0.20 1.0000 over the HFP T1,F temperature range from 586.4 to 587A.F. 61 0.00 1.0000

VOGTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 2 CYCLE 10 CORE OPERATING LIMITS REPORT REVISION 1 SEPTEMBER 2003

COLR for VEGP UNIT 2 CYCLE 10 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for VEGP UNIT 2 CYCLE 10 has been prepared in accordance with the requirements of Technical Specification 5.6.5.

The Technical Requirement affected by this report is listed below:

13.1.1 SHUTDOWN MARGIN - MODES 1 and 2 The Technical Specifications affected by this report are listed below:

3.1.1 SHUTDOWN MARGIN - MODES 3,4 and 5 3.1.3 Moderator Temperature Coefficient 3.1.5 Shutdown Bank Insertion Umits 3.1.6 Control Bank Insertion Limits 3.2.1 Heat Flux Hot Channel Factor - FO(Z) 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor- F-3.2.3 Axial Flux Difference 3.9.1 Boron Concentration PAGE 1 of 14

COLR for VEGP UNIT 2 CYCLE 10 2.0 OPERATING LIMITS The cycle-specific parameter limits for the specifications listed in Section 1.0 are presented in the following subsections. These limits have been developed using NRC-approved methodologies, including those specified in Technical Specification 5.6.5.

2.1 SHUTDOWN MARGIN - MODES 1 AND 2 (Technical Requirement 13.1.1) 2.1.1 The SHUTDOWN MARGIN shall be greater than or equal to 1.30 percent Ak/k.

2.2 SHUTDOWN MARGIN - MODES 3. 4 AND 5 (Specification 3.1.1) 2.2.1 The SHUTDOWN MARGIN shall be greater than or equal to the limits shown in Figures 1 and 2.

2.3 Moderator Temperature Coefficient (Specification 3.1.3) 2.3.1 The Moderator Temperature Coefficient (MTC) limits are:

The BOUARO/HZP - MTC shall be less positive than +0.7 x 104 Ak/k/PF for power levels up to 70% RTP with a linear ramp to 0 Ak/kf'F at 100% RTP.

The EOUARO/RTP-MTC shall be less negative than -5.50 x 10 4 Ak/kPF.'

2.3.2 The MTC Surveillance limits are:

The 300 ppm/ARO/RTP-MTC should be less negative than or equal to

-4.75 x 104 AkIkPF.'

The 60 ppm/ARO/RTP-MTC should be less negative than

-5.35 x 104 Ak/kf°F.'

where: BOL stands for Beginning of Cycle Ufe ARO stands for All Rods Out HZP stands for Hot Zero THERMAL POWER EOL stands for End of Cycle Ufe RTP stands for RATED THERMAL POWER 2.4 Shutdown Bank Insertion Limits (Specification 3.1.5) 2.4.1 The shutdown banks shall be withdrawn to a position greater than or equal to 225 steps.

2.5 Control Bank Insertion Limits (Specification 3.1.6) 2.5.1 The control banks shall be limited in physical insertion as shown in Figure 3.

Applicable for full-power T-average of 586.40F to 587.40F.

PAGE 2 OF 14

COLR for VEGP UNIT 2 CYCLE 10 2.6 Heat Flux Hot Channel Factor - Fo(Z) (Specification 3.2.1)

RTP F0 2.6.1 Fo(Z) <

  • K(Z) for P > 0.5 P

RTP F0 Fo(Z) < __

  • K(Z) for P
  • 0.5

0.5 where

P = THERMAL POWER RATED THERMAL POWER RTP 2.6.2 F0 = 2.50 2.6.3 K(Z) is provided in Figure 4.

RTP 2.6.4 Fa(Z)

  • F- Km for P > 0.5 P *W(Z)

RTP FO(Z) s FQ *K(Z) for P < 0.5 0.5

  • W(Z) 2.6.5 W(Z) values are provided in Figures 6 through 9.

2.6.6 The Fo(Z) penalty factors are provided in Table 1.

PAGE 3 of 14

COLR for VEGP UNIT 2 CYCLE 10 2.7 Nuclear Enthalnv Rise Hot Channel Factor - FNH (Specification 3.2.2) 2.7.1 FNH

  • FRHP * (1 + PFAH * (1-P))

where: P = THERMAL POWER RATED THERMAL POWER 2.7.2 F:H = 1.65 2.7.3 PFAH = 0.3 2.8 Axial Flux Difference (Specification 3.2.3) 2.8.1 The Axial Flux Difference (AFD) Acceptable Operation Limits are provided in Figure 5.

2.9 Boron Concentration (Specification 3.9.1) 2.9.1 The boron concentration shall be greater than or equal to 1810 ppm.'

'This concentration bounds the condition of ken

  • 0.95 (all rods in less the most reactive rod) and subcriticality (all rods out) over the entire cycle. This concentration includes additional boron to address uncertainties and B10 depletion.

s:\vogUe\Colr\COLR.U2 PAGE 4 of 14

COLR for VEGP UNIT 2 CYCLE 10 TABLE 1 Fo(Z) PENALTY FACTOR Cycle Fa(Z)

Bumup Penalty (MWD/MTU) Factor All Bumups 1.020 Notes:

1. The Penalty Factor, to be applied to FQ(Z) in accordance with SR 3.2.1.2, is the maximum factor by which Fo(Z) is expected to increase over a 39 EFPD interval (surveillance interval of 31 EFPD plus the maximum allowable extension not to exceed 25% of the surveillance interval per SR 3.0.2) starting from the burnup at which the F0(Z) was determined.

PAGE 5 of 14

COLR for VEGP UNIT 2 CYCLE 10 5.1IIfIjE v_

- - Y. q I I I 1 4.00 F 4 ACCEPTABLE c OPERATING REGION z (2500.3.1) a.-.

4 1 I I -

co 3.00 F a5:

00000 M2.0 (1600.

0 a .

1-- 2.00 ,

aU, w UNACC =PTABLE OPEF XATING (950, 1.30) REI 3ION w 1.00 I I 4. 1 I cc A At u.. ..

I h I I-0 500 1000 1500 2000 2500 217s-l RCS BORON CONCENTRATION (ppm)

FIGURE 1 REQUIRED SHUTDOWN MARGIN FOR MODES 3 AND 4 (FOUR LOOPS FILLED AND VENTED AND AT LEAST ONE REACTOR COOLANT PUMP RUNNING)

PAGE 6 of 14

COLR for VEGP UNIT 2 CYCLE 10 5.00 i..

4.00 w C4 ACCEPTABLE OPERATING REGION C,

3.00 .

c (1250.2. .

a uA a

w52.00 UNACCEPTABLE OPERATING REGION 1.*00 ~ ,(460,1.00) 11nn V.V 500 1000 1500 2000 2500 as, RCS BORON CONCENTRATION (ppm)

FIGURE 2 REQUIRED SHUTDOWN MARGIN FOR MODES 4 AND 5 (MODE 4 WHEN FIGURE 1 NOT APPLICABLE)

PAGE 7 of 14

COLR for VEGP UNIT 2 CYCLE 10 (Fully Withdrawn *)

2251 2201 T1 T '

o 16 0 Ubr (100%, 161) t 140 i~~ _ 7 'BANK C _t z 120 0 _ _ _ _ _ _ _

1-=

o 100 - -

0L z

< 80- BAN==gK D _

60 40 (0%,46) = = ____

20 ==_= =

O W-0 20 40 60 80 100 (Fully Inserted)276 POWER (percent of rated thermal power)

Full withdrawn shall be the condition where control rods are at a position within theinteral 22 and 231 steps withdrawn.

Note: The Rod Bank Insertion Umits are based on the control bank withdrawal sequence A.

B,C, D and a control bank tip-to-tp distance of 115 steps.

FIGURE 3 ROD BANK INSERTION LIMITS VERSUS % OF RATED THERMAL POWER PAGE 8 of 14

COLR for VEGP UNIT 2 CYCLE 10 1.4 .0 1.2 a:

Cl 1.0 z

w D- 0.8 .0

-J o 0.6 cc F0 = 2.50 0

z CO RE_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

0.40 HEIGHT K(Z-fvt 0.000 1.000 6.000 1.000 0.2'0 12.000 0.925 . -

0 0 2.0 4.0 6.0 8.0 10.0 12.0 CORE HEIGHT (ft)

FIGURE 4 K(Z) - NORMALIZED F 0 (Z) AS A FUNCTION OF CORE HEIGHT PAGE 9 of 14

COLR for VEGP UNIT 2 CYCLE 10 120

(-15, 100) (+10,100) _

100 UNACCEPTABLE UNACCEPTABLE I 80 co 0 ACCEPTABLE 60 CL l(-30,50) (+26,50)

0. 40 91 20 0 - -====--=-=

-50 -40 -30 -20 -10 0 10 20 30 40 50 AXIAL FLUX DIFFERENCE (percent Al)

FIGURE 5 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF % OF RATED THERMAL POWER FOR RAOC PAGE 10 of 14

COLR for VEGP UNIT 2 CYCLE 10 1.6 Axial Elevation BOL Point (feet) W(Z)

  • 1 12.00 1.0000
  • 2 11.80 1.0000

' 3 11.60 1.0000

  • 4 11.40 1.0000
  • 5 11.20 1.0000
  • 6 11.00 1.0000 1.5- - - - - - - - -
  • 7 10.80 1.0000

- - -

  • 8 10.60 1.0000
  • B 10.40 1.0000
  • 10 10.20 1.0000 It 10.00 1.3331 12 9.80 1.2984 13 9.60 1.2789 14 9.40 1.2734 15 9.20 1.2625

,4___ ___ 16 17 9.00 8.80 1.2592 1.2636 18 8.60 1.2723 19 8.40 1.2770 20 8.20 1.2800 21 8.00 1.2794 22 7.80 1.2802 23 7.60 1.2801 24 7.40 1.2762 N 25 7.20 1.2697

'-1. 26 7.00 1.609 3~~~ a 27 6.80 1.2252 28 6.60 1.2127 AL 29 6.40 1.1985 30 6.20 1.1828 a A'A 31 6.00 1.1708 32 5.80 1.1662

& ~ _ _ ~~~~

, _A_ _ _ _ _ _ _ 33 5.60 1.1635 34 5.40 1.1638

1. AA a 35 5.20 1.1692 36 5.00 1.1783 37 4.80 1.1875 38 4.60 1.1957 39 4.40 1:2029 40 4.20 1.2090 41 4.00 1.2173 42 3.80 1.2231 43 3.60 1.2281 1.I 44 3.40 1.2316 45 3.20 1.2337 46 3.00 1.2390

-47 2.80 1.2492 48 2.60 1.2612 49 2.40 1.2727 50 2.20 1.2881 51 2.00 1.3053 1.1

  • 52 1.80 1.0000
  • 53 1.60 1.0000 0.0 2.0 4.0 6.0 8.0 10.0 12.0
  • 54 1.40 1.0000
  • 55 1.20 1.0000 Core Height - feet
  • 56 1.00 1.0000
  • 57 0.80 1.0000 This mreis referred to by Spedfication B32.1
  • 58 0.60 1.0000

' 59 0.40 1.0000 These W(Z) values are consistent with FIgure 5 and are valid

  • 60 0.20 1.0000 over the HFP T.av temperature range from 586.4 to 5874°F.
  • 61 0.00 1.0000
  • Top and Bottom 15% Exluded per Tednical Spedlfaion 83.2.1 FIGURE 6 RAOC W(Z) AT1 50 MWD/MTU PAGE 11 of 14

COLR for VEGP UNIT 2 CYCLE 10 1:b Axial Elevation MOL-1 Point (feet) W(Z) 1 12.00 1.0000 2 11.80 1.0000 3 11.60 1.0000 4 11.40 1.0000 5 11.20 1.0000 6 11.00 1.0000

  • 7. 10.80 1.0000
  • 8 10.60 1.0000 9 10.40 1.0000 10 10.20 1.0000 11 10.00 1.3967 12 9.80 1.3673 13 9.60 1.3446 14 9.40 1.3272 15 9.20 1.3026 16 9.00 1.2783 1.4--- 17 8.80 1.2633 18 8.60 1.2582 a 19 8.40 1.2560 20 8.20 1.2516 21 8.00 1.2518

_ _ ~~~~~~~6d 22 7.80 1.2508 23 7.60 1.2464 24 7.40 1.2397

- 1. 25 7.20 1.2309 3 1: 26 7.00 1.2201 a-l-I a6 27 6.80 1.1958 3--a A 28 6.60 1.1824 29 6.40 1.1701 30 6.20 1.1617 A aA- 31 6.00 1.1700 6 l a 32 5.80 1.1626 33 5.60 1.1566 34 5.40 1.1528 1.2 a 35 5.20 1.1573 36 5.00 1.1634 37 4.80 1.1685 38 4.60 1.1731 AAAat^_

39 4.40 1.1773 40 4.20 1.1819 41 4.00 1.1863 42 3.80 1.1922 43 3.60 1.1967 1._i 44 3.40 1.2005 45 3.20 1.2056 46 3.00 1.2126 47 2.80 1.2250 48 2.60 1.2424 49 2.40 1.2600 50 2.20 1.2790 51 2.00 1.3003 1.0 K. 52 1.80 1.0000 53 1.60 1.0000 0.0 2.0 4.0 6.0 8.0 10.0 12.0 54 1.40 1.0000

  • 55 1.20 1.0000 Core Height - feet
  • 56 1.00 1.0000
  • 57 0.80 1.0000 This figure is referred to by Specification B3.2.1
  • 58 0.60 1.0000
  • 59 0.40 1.0000 These W(Z) values are consistent with Figure 5 and are valid
  • 60 0.20 1.0000
  • 61 0.00 1.0000 ever the HFP Tag temperature range from 586.4 to 587.4°F.

COLR for VEGP UNIT 2 CYCLE 10 1.1 6 IDLIZZL

  • Axial Point 2

3 1

Elevation (feet) 12.00 11.80 11.60 AOL-2 W(Z) 1.0000 1.0000 1.000

  • 4 11.40 1.0000
  • 5 11.20 1.0000
  • 6 11.00 1.0000 7 10.80 1.000 1.1 1

. 1. .1 .1-

  • 8 9

10 11 10.60 10.40 10.20 10.00 1.0000 1.0000 1.0000 1.2757 12 9.80 1.2740 13 9.60 1.2701 14 9.40 1.2635 IS 9.20 1.2563 16 9.00 1.2442 1.1 17 8.80 1.2380 18 8.60 1.2368 19 8.40 1.2404 20 8.20 1.2415 21 8.00 1.2457 22 7.80 1.2515 23 7.60 1.2535 24 7.40 1.2529

.N 25 7.20 1.2495 3--- 26 7.00 1.2437 27 6.80 1.2356

  • - 1.. 28 6.60 1.2254 29 6.40 1.2140 30 6.20 1.2024 a aa~~~~~~~a 31 6.00 1.1887

,A . .'A 32 5.80 1.1762 33 5.60 1.1718 34 5.40 1.1771 1.:  :, A 35 5.20 1.1833 36 5.00 1.1886 37 4.80 1.1926

&A~~~~~~~ 38 4.60 1.1952 39 4.40 1.1964 40 4.20 1.1961 41 4.00 1.1944 42 3.80 1.1911 43 3.60 1.1871

. 1.~ I 44 3.40 1.1836 45 3.20 1.1821 46 3.00 1.1834 47 2.80 1.1897 48 2.60 1.1991

_ - -_ 49 2.40 1.2087 50 2.20 1.2182 51 2.00 1.2276 I Ift

  • 52 1.80 1.0000

__

  • 53 1.60 1.0000 0.0 2.0 4.0 .6.0 8.0 10.0 12.0
  • 54 1.40 1.0000 55 1.20 1.0000 Core Height - feet
  • 56 1.00 1.OOD0
  • 57 0.80 O1.0000 This figure Is referred to by Specification D331
  • 58 0.60 1.0000
  • 59 0.40 1.0000
  • 60 0.20 1.0000 These W(Z) values are consistent with Figure 5 and are valid
  • 61 0.00 1.0000 over the HFP Ta.. temperature range from 586.4 to 587.4F.
  • Top and Rotton 1S%Exuded per Technca Specification B12.1 FIGURE 8 RAOC W(Z) AT 12000 MWD/MTU PAGE 13 of 14

COLR for VEGP UNIT 2 CYCLE 10 1.

6111- _ _ _ _

Axial Point 2

3 4

1 Elevation (feet) 12.00 11.80 11.60 11.40 EOL W(Z) 1.0000 1.0000 1.0000 1.0000

' 5 11.20 1.0000

  • 6 11.00 1.0000 7 10.80 1.0000
1. .11-

- - - . I

_* _ 8 10.60 1.0000

  • 9 10.40 1.0000
  • 10 10.20 1.0000 11 10.00 1.2297

_ _ _12 9.80 1.2271 13 9.60 1.2312 14 9.40 1.2309 15 9.20 1.2297 16 9.00 1.2348

1. 17 8.80 1.2400 18 8.60 1.2451 19 8.40 1.2556 20 8.20 1.2726

_ _ 21 8.00 1.2865 22 - 7.80 1.2853 23 7.60 1.2940 24 7.40 1.2995 25 7.20 1.3020

_ 7 ~ .26 7.00 1.3017 27 6.80 1.2982

-1. 28 6.60 1.2936 29 6.40 1.2893 9AAA - ____

s -30 31 6.20 6.00 1.2834 1.2758 A

AAA, 32 5.80 1.2660 33 5.60 1.2573 34 5.40 1.2539.

1. _ - - - - 35 5.20 1.2543 a a_

a 36 5.00 1.2532 37 4.80 1.2514 38 4.60 1.2487

_ - - - - 39 4.40 1.2434 I~~~~~ 40 4.20 1.2358 41 4.00 1.2260 42 3.80 1.2141 43 3.60 1.2008

1. _ - - _- - - 44 3.40 1.1880 45 3.20 1.1776 46 3.00 1.1848 47 2.80 1.1865 48 2.60 1.1977

_ - - - - - - 49 2.4D 1.2078 50 2.20 1.2179 51 2.00 1.2281

  • 52 1.80 1.0000 1.i _ - - - -
  • U 53 1.60 1.0000 0.0 2.0 4.0 6.0 8.0 10.0 12.0 54 1.40 1.0000 55 1.20 1.0000 Core Height - feet
  • 56 1.00 1.0000
  • 57 0.80 1.0000 This figure Isreferred to by Spedfication B32.-1 58 0.60 1.0000 59 0.40 1.0000
  • 60 020 1.0000 These W(Z) values are consistei at with Figure 5 and are valid
  • 61 0.00 1.0000 ever the HFP T.vg temperature range from 586.4 to 587.4°F.
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