NL-06-2319, Cycle 14 and Unit 2 Cycle 12 - Core Operating Limits Reports

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Cycle 14 and Unit 2 Cycle 12 - Core Operating Limits Reports
ML062970102
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 10/20/2006
From: Grissette D
Southern Nuclear Operating Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-06-2319
Download: ML062970102 (33)
v • d • e


Text

Don E Grissette Southern Nuclear Vice President Operating Company. Inc.

40 Inverness Center Parkway Post Office Box 1295 Birmingham, Alabama 35201 Tel 205.992.6474 Fax 205.992.0341 SOUTHERNN.AM COMPANY October 20, 2006 Energy to Serve YourWorld' Docket Nos.: 50-424 NL-06-2319 50-425 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Vogtle Electric Generating Plant Unit 1 Cycle 14 and Unit 2 Cycle 12 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 is submitting Revision 0 of the Unit Cycle 14 Core Operating Limits Report (COLR) and Revision 1 of the Unit 2 Cycle 12 COLR.

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

Sincerely, Don E. Grissette DEG/LPH/daj

Enclosures:

1. Revision 0 of the Unit Cycle 14 Core Operating Limits Report (COLR)
2. Revision I of the Unit 2 Cycle 12 Core Operating Limits Report (COLR) cc: Southern Nuclear Operating Company Mr. J. T. Gasser, Executive Vice President Mr. T. E. Tynan, General Manager - Plant Vogtle RType: CVC7000 U. S. Nuclear Regulatory Commission Dr. W. D. Travers, Regional Administrator Mr. C. Gratton, NRR Project Manager - Vogtle Mr. G. J. McCoy, Senior Resident Inspector - Vogtle

Enclosure 1 Vogtle Electric Generating Plant Revision 0 of the Unit Cycle 14 Core Operating Limits Report (COLR)

VOGTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 1 CYCLE 14 CORE OPERATING LIMITS REPORT REVISION 0 October 2006

COLR for VEGP UNIT 1 CYCLE 14 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for VEGP UNIT I CYCLE 14 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 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 - FA 3.2.3 Axial Flux Difference 3.9.1 Boron Concentration PAGE 1 of 14

COLR for VEGP UNIT 1 CYCLE 14 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 I 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 BOLIARO/HZP - MTC shall be less positive than +0.7 x 10 Ak/k/0 F for power levels up to 70 percent RTP with a linear ramp to 0 Ak/k/F at 100 percent RTP.

The EOL/ARO/RTP-MTC shall be less negative than

-5.50 x 104 Ak/k/OF.1 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 10-4 Ak/k/OF. 1 The 60 ppm/ARO/RTP-MTC should be less negative than

-5.35 x 104 Ak/k/OF.'

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 Life 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.

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

PAGE 2 of 14

COLR for VEGP UNIT 1 CYCLE 14 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.

2.6 Heat Flux Hot Channel Factor - FQ(Z) (Specification 3.2.1)

FRTP 2.6.1 FQ(Z) _ P

  • K(Z) for P> 0.5 P

FRT P FQ (Z)*5 0.5

  • K(Z) for P:*0.5 where: P = THERMAL POWER RATED THERMAL POWER 2.6.2 FRTP = 2.50 Q

2.6.3 K(Z) is provided in Figure 4.

FRTP *K(Z) 2.6.4 FQ(Z)5 P* W(Z) for P > 0.5 FRTP *K(Z) forP<0.5 F0 (Z):5 0.5

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

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

PAGE 3 of 14

COLR for VEGP UNIT I CYCLE 14 2.7 Nuclear Enthalpy Rise Hot Channel Factor - FN (Specification 3.2.2) 2.7.1 FN<Fa *(1+PFA*(1-P))

THERMAL POWER where: P =

RATED THERMAL POWER 2.7.2 Fr = 1.65 2.7.3 PFa = 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 1900 ppm. 1 1This concentration bounds the condition of Ikf

  • 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.

PAGE 4 of 14

COLR for VEGP UNIT 1 CYCLE 14 TABLE 1 FQ(Z) PENALTY FACTOR Cycle FQ(Z)

Bumup Penalty (MWD/MTU) Factor 6124 1.020 6338 1.021 7831 1.021 8044 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 FQ(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 FQ(Z) was determined.
2. Linear interpolation Is adequate for intermediate cycle burnups.
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 I CYCLE 14 5.

4.

<3.

H 2.

1.

0.

1000 1500 2500 RCS BORON CONCENTRATION (ppm)

FIGURE I 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 14 5.

4.

< 3.

2.

1 0

1000 1500 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 14 (Fully Withdrawn*)

t I 1 16I !(t)$.l6L 12125- 1 1 1 1 1 1 1 1 1 1 1 1 1 1. 718.7t%.! .a$)j) 220 200 t I I Y PO 20 I I I I I I I I I I I I I I I I II I I I mu i 1K E ..I I . . I II . I . .I. . 9 II 1 4l 1 1 1 I 1 I1 I1 I I I 180 k

.160

......I ...... ... - . . I- I ..... . I I I I I I I I I I I I I I I I I I I I I I I I~ I I I I I I I I I I I I I I e 140 11!!M1 !111 111111117-11 IMI! 11111 111i

- iii

......- 11 1171 K (

O H 120 0

Ta p.100 IIIIIIIIIIIIiI***I 11111 so8

....... I - ... - -. I== ISIE-M K I 60I1t[111 II111 i 1111 Il11 1 I11V ' II 1111.jj 11i l1 1 40 1Il 201 I I I I I I I I I I I I I I

  • I I I I I I I I I I I I I I I I I I I I I I I I I l I II I I I II II IrI I I II 11 111 111 1 1111 1 1III 1II 1 II 0 10 20 30 40 50 60 70 80 90 1Ii0 POWER (% of Rated Thermal Power)

Fully withdrawn shall be the condition where control rods are at a position within the interval > 225 and < 231 steps withdrawn.

NOTE: The Rod Bank Insertion Limits are based on the control bank withdrawal sequence A, B, C, D and a control bank tip-to-tip 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 14

1. 4

.2 - 'i i 1

.0 ***

20

.8 -- FQ = 2.50 a,1 CORE H _ HT-nT. K(Z) 0.00 1.00

.6 -- 6.00 1.00 12.0 .925 0

.4 0

.L

4. -I i -I- I 4. 1 1 1 t 0.01 , I i I 0 2 4 6 8 10 12 CORE HEIGHT (feet)

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

COLR for VEGP UNIT 1 CYCLE 14 120

.. A II2 IIiii SI I 1 1 iIi i iTi I III 1

iL 15z, 100) (+1o0 100) 1 00o 1 /

810 r4 I

A* CE PTJU ýLE E-9 0

750 0w 1-30 50) - -- (+26, 50)1 40 30-20' 10 A1

-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 I CYCLE 14 Axial Elevation BOL Point (feet) W(Z)

  • 1 12.00 1.0000
1.
  • 2 11.80 1.0000

' 3 11.60 1.0000

  • 4 11.40 1.0000
  • 5 11.20 1.0000 6 11.00 1.3272 7 10.80 1.3199 8 10.60 1.3063 9 10.40 1.2899
1. 10 10.20 1.2821 11 10.00 1.2744 12 9.80 1.2675 13 9.60 1.2611 14 9.40 1.2541 15 9.20 1.2464 16 9.00 1.2336 17 8.80 1.2300 1.4- A 18 8.60 1.2339 19 8.40 1.2370 20 8.20 1.2380 21 8.00 1.2353
1. 3 22 7.80 1.2368 A 23 7.60 1.2389 A 24 7.40 1.2373 N __ 25 7.20 1.2335

- 1.3~ 26 7.00 1.2275 27 6.80 1.1956 A 28 6.60 1.1862 29 6.40 1.1756 30 6.20 1.1638 31 6.00 1.1507

A 32 5.80 1.1426 AA A A A 33 5.60 1.1458 34 5.40 1.1590 35 5.20 1.1704 A A 36 5.00 1.1809 A A 37 4.80 1.1908 38 4.60 1.1996 39 4.40 1.2073 40 4.20 1.2141 41 4.00 1.2197 42 3.80 1.2227 43 3.60 1.2249 44 3.40 1.2289 45 3.20 1.2341 46 3.00 1.2440 1.0 47 2.80 1.2610 48 2.60 1.2834 49 2.40 1.3067

1. _ . . . . . . . .

50 2.20 1.3297 51 2.00 1.3523 0.0 2.0 4.0 6.0 8.0 1().0 12.0 52 1.80 1.3742 53 1.60 1.3952 Core Height - feet 54 1.40 1.4151 55 1.20 1.4337 56 1.00 1.4500

  • 57 0.80 1.0000 This figure Is referred to by Specification 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.ng temperature range from 586.4 to 587.4*F.
  • 61 0.00 1.0000 Top and Bottom 5 Axial Points

COLR for VEGP UNIT I CYCLE 14 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 1.3732 7 10.80 1.3560 8 10.60 1.3349 9 10.40 1.3103
1. 10 10.20 1.2914 11 10.00 1.2843 12 9.80 1.2769 5-- 13 9.60 1.2680 14 9.40 1.2582 15 9.20 1.2435 16 9.00 1.2268 4 17 8.80 1.2185
1. A 18 8.60 1.2182 19 8.40 1.2184 A 20 8.20 1.2163 21 8.00 1.2175 22 7.80 1.2178 A A 23 7.60 1.2149 24 7.40 1.2102 25 7.20 1.2036 N 1.1955

-~ 1. 26 7.00 27 6.80 1.1737 A A 28 6.60 1.1634 A A 29 6.40 1.1529 AA 30 6.20 1.1415 31 6.00 1.1328 32 5.80 1.1302 33 5.60 1.1320 A

34 5.40 1.1415 A AA 35 5.20 1.1501 36 5.00 1.1593 A A 37 4.80 1.1685 A A 38 4.60 1.1765

- - N .

39 4.40 1.1837 40 4.20 1.1898 41 4.00 1.1947 42 3.80 1.2009

1. 43 3.60 1.2074 44 3.40 1.2144 OA A 45 3.20 1.2199 46 3.00 1.2287 47 2.80 1.2454 48 2.60 1.2670 49 2.40 1.2875 50 2.20 1.3079
1. I 51 2.00 1.3283 2.0 4.0 6.0 8.0 10.0 12.0 52 1.80 1.3498 0.0 53 1.60 1.3718 Core Height - feet 54 1.40 1.3929 55 1.20 1.4127 56 1.00 1.4306
  • 57 0.80 1.0000
  • 58 0.60 1.0000 This figure Isreferred to by SpecflIcation B32.1
  • 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,,g temperature range from 586.4 to 587.4°F.
  • 61 0.00 1.0000 Top and Bottomn 5 Axial Points
  • Excluded per Tedmical Specification Basis B3.2.1 FIGURE 7 RAOC W(Z) AT 4000 MWD/MTU PAGE 12 of 14

COLR for VEGP UNIT 1 CYCLE 14 Axial Elevation MOL-2 Pcnt (feet) W(Z)

  • 1 12.00 1.0000 1.6
  • 2 11.80 1.0000
  • 3 11.60 1.0000
  • 4 11.40 1.0000
  • 5 11.20 1.0000 6 11.00 1.2855 7 10.80 1.2815 8 10.60 1.2745 9 10.40 1.2819 10 10.20 1.2857 11 10.00 1.2857 12 9.80 1.2858 13 9.60 1.2838 14 9.40 1.2791 15 9.20 1.2741 16 9.00 1.2647 17 8.80 1.2538
1. 4------------------ 18 8.60 1.2518 19 8.40 1.2496 20 8.20 1.2488 21 8.00 1.2456 22 7.80 1.2481 23 7.60 1.2521 24 7.40 1.2519 25 7.20 1.2491 N

- 1. 3 26 27 7.00 6.80 1.2437 1.2359 28 6.60 1.2259 29 6.40 1.2141 30 6.20 1.2005 31 6.00 1.1845 2A 32 5.80 1.1750 A A 33 5.60 1.1758 A A A 34 5.40 1.1807

1. 35 5.20 1.1836 36 5.00 1.1875 37 4.80 1.1908 38 4.60 1.1923 39 4.40 1.1924 40 4.20 1.1910 41 4.00 1.1881 42 3.80 1.1840
1. 43 3.60 1.1784 44 3.40 1.1722 45 3.20 1.1693 46 3.00 1.1697 47 2.80 1.1726 48 2.60 1.1798 49 2.40 1.1869 50 2.20 1.1940
1. I 51 2.00 1.2014 52 1.80 1.2089 0.0 2.0 4.0 6.0 8.0 10.0 12.0 53 1.60 1.2169 Core Height - feet 54 1.40 1.2256 55 1.20 1.2341 56 1.00 1.2419
  • 57 0.80 1.0000 This figure bs referred to by Specficatlon B3.1I
  • 58 0.60 1.0000
  • 59 0.40 1.0000 These W(Z) values are consistent with Figure S, and are valid
  • 60 0.20 1.0000
  • 61 0.00 1.0000 over the 1FF T,,g temperature range from 586.4 to 587.4KF. Top and Bottom 5 Axial Points

COLR for VEGP UNIT 1 CYCLE 14 Axial Elevation EOL Point (feet) W(Z) 1 12.00 1.0000 I 2 11.80 1.0000 3 11.60 1.0000 4 11.40 1.0000

  • 5 11.20 1.0000 6 11.00 1.2788 7 10.80 1.2740 8 10.60 1.2655 9 10.40 1.2565 1 10 10.20 1.2452 11 10.00 1.2313 12 9.80 1.2257 13 9.60 1.2261 14 9.40 1.2342 15 9.20 1.2409 16 9.00 1.2436 17 8.80 1.2491 1 18 8.60 1.2566 19 8.40 1.2623 20 8.20 1.2708 21 8.00 1.2797 22 7.80 1.2899 23 7.60 1.2960 24 7.40 1.2990 25 7.20 1.3002 N 26 7.00 1.2985

"-1 27 6.80 1.2938 28 6.60 1.2864 29 6.40 1.2764 30 6.20 1.2641 1= 31 6.00 1.2503 32 5.80 1.2395 33 5.60 1.2336 34 5.40 1.2325 35 5.20 1.2356 36 5.00 1.2372 37 4.80 1.2363 38 4.60 1.2335 39 4.40 1.2285 40 4.20 1.2214 41 4.00 1.2122 42 3.80 1.2013

1. 43 3.60 1.1896 44 3.40 1.1799 45 3.20 1.1715 46 3.00 1.1705 47 2.80 1.1754 48 2.60 1.1879 49 2.40 1.1988 50 2.20 1.2096 1.01 1 1 1 .1 1 1 1 1 1 1 1 51 2.00 1.2204 10.0 12.0 52 1.80 1.2313 0.0 2.0 4.0 6.0 8.0 53 1.60 1.2423 Core Height - feet 54 1.40 1.2535 55 1.20 1.2646 56 1.00 1.2752 57 0.80 1.0000 This figure Is referred to by Specification B3..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 0 61 0.00 1.0000 ever the HFP T., temperature range from 596.4 to 587.4 F.

Top and Bottom 5 Axial Points S Excluded per Technical Specification Basis B3.2.1 FIGURE 9 RAOC W(Z) AT 18,000 MWDIMTU PAGE 14 of 14

Enclosure 2 Vogtle Electric Generating Plant Revision 1 of the Unit 2 Cycle 12 Core Operating Limits Report (COLR)

VOGTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 2 CYCLE 12 CORE OPERATING LIMITS REPORT REVISION I October 2006

COLR for VEGP UNIT 2 CYCLE 12 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for VEGP UNIT 2 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 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 Limits 3.1.6 Control Bank Insertion Limits 3.2.1 Heat Flux Hot Channel Factor - Fa(Z) 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor - FNH 3.2.3 Axial Flux Difference 3.9.1 Boron Concentration Page 1 of 14

COLR for VEGP UNIT 2 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 I and 2.

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

The BOLIARO/HZP - MTC shall be less positive than +0.7 x 10-4 Ak/k/°F for power levels up to 70% RTP with a linear ramp to 0 Ak/k/PF at 100% RTP.

The EOL/ARO/RTP-MTC shall be less negative than -5.50 x 10.4 Ak/k/0 F.'

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 10*4 Ak/kfF.'

The 60 ppm/ARO/RTP-MTC should be less negative than -5.35 x 10.4 Ak/k/PF.'

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 Life 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 587.4°F.

Page 2 of 14

COLR for VEGP UNIT 2 CYCLE 12 2.6 Heat Flux Hot Channel Factor - FQ(Z) (Specification 3.2.1)

FRTP 2.6.1 FQ(Z)*; P *K(Z) forP>0.5 P

FRTP FQ (Z)5__

  • K(Z) for P__ 0.5

0.5 where

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

FRTP *K(Z) 2.6.4 FQ (Z)5 P (Z)

P *W(Z) for P > 0.5 FRTP *K(Z)

FQ (Z)5 0.5 W(Z) for P < 0.5 2.6.5 W(Z) values are provided in Figures 6 through 9.

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

Page 3 of 14

COLR for VEGP UNIT 2 CYCLE 12 2.7 Nuclear Enthalpy Rise Hot Channel Factor - FN (Specification 3.2.2) 2.7.1 FNH *5 FRTP * (1 + PFAH * (1-P))

THERMAL POWER where: P=

RATED THERMAL POWER 2.7.2 Fmp = 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 1950 ppm. 1 1This concentration bounds the condition of Ik < 0.95 (all rods in less the most reactive rod) and subcriticality (a.l rods out) over the entire cycle. This concentration includes additional boron to address uncertainties and B10 depletion.

Page 4 of 14

COLR for VEGP UNIT 2 CYCLE 12 TABLE 1 FQ(Z) PENALTY FACTOR Cycle Fo(Z)

Burnup Penalty (MWD/MTU) Factor 5061 1.020 5275 1.022 5488 1.021 5702 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 F0 (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 bumup at which the FQ(Z) was determined.
2. Linear interpolation is adequate for intermediate cycle burnups.
3. For all cycle burnups outside the range of the table, a penalty factor of 1.020 shall be used.

Page 5 of 14

COLR for VEGP UNIT 2 CYCLE 12 5.00 "4.00 ACCEPTABLE OPERATING REGION z (2500.3.1),o 5 3.00 z

000ý (1600,25) co 0 0 UNACC =-PTABLE m OPEF ATING Ow 1.00- S (950, 1.30) REI NION 0.00 0

500 1000 1500 2000 2500 MM1-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 12 (2500,4.

4.00 ACCEPTABLE OPERATING REGION 3.00

-I- (1250,2.85) z 0

x3: 2.00-w.

a:I UNACCEPTABLE OPERATING a: REGION 1.00 l(460, 1.00)"

1n.'C.

0 500 1000 1500 2000 2500 11M-I 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 12 (Fully Withdrawn *)

161)

V z

0 0 Inserted) 20 40 60 80 100 (Fully POWER (percent of rated thermal power) 3,17-Fully withdrawn shall be the condition where control rods are at a position within the interval M225 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-tip 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 12 1.40 1.20 it 0

I.-

U<- 1.00 z0 0.80 n- 0.60 cc F0 = 2.50 0

z CORE 0.40 -HEIGHT K(Z) 0.000 1.000 6.000 1.000 0.20 - 12.000 0.925 0 _

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

FIGURE 4 K(Z) - NORMALIZED Fa (Z) AS A FUNCTION OF CORE HEIGHT Page 9 of 14

COLR for VEGP UNIT 2 CYCLE 12 IL

  • 1.

I.-

0

'I-

-40 -30 -20 -10 0 10 20 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 12 Axial Elevation BOL Point (feet) W(Z)

  • 1 12.00 1.0000
1.
  • 2 11.80 1.0000
  • 3 11.60 1.0000 T1 I I I I I I I I I I
  • 4 5

6 11.40 11.20 11.00 1.0000 1.0000 1.3478 7 10.80 1.3386 8 10.60 1.3232 9 10.40 1.3063 1o 10.20 1.2842 A 11 10.00 1.2714 A 12 9.80 1.2570 13 9.60 1.2402 A 14 9.40 1.2242 15 9.20 1.2087 A 16 9.00 1.1997 17 8.80 1.1987

1. 18 8.60 1.2027 19 8.40 1.2132 20 8.20 1.2203 21 8.00 1.2264 22 7.80 1.2313 A A 23 7.60 1.2334 24 7.40 1.2329 A A _

25 7.20 1.2304 N

M 1 26 7.00 1.2257 27 6.80 1.1952 A 28 6.60 1.1880 AA A 29 6.40 1.1807 A ,A 30 6.20 1.1720 31 6.00 1.1622 A A A A 32 5.80 1.1571 A ~ AoA 33 5.60 1.1620 A A A A I. 34 5.40 1.1798 A 35 5.20 1.1954 A A A 36 5.00 1.2100 AA 37 4.80 1.2240 38 4.60 1.2371 39 4.40 1.2491 40 4.20 1.2600 41 4.00 1.2700 42 3.80 1.2735

1. 43 3.60 1.2781 44 3.40 1.2875 45 3.20 1.2957 46 3.00 1.3013 47 2.80 1.3106 48 2.60 1.3284 49 2.40 1.3516 50 2.20 1.3742 I. 51 2.00 1.3960 0.0 2.0 4.0 6.0 8.0 10.0 12 .0 52 1.80 1.4174 53 1.60 1.4380 Core Height - feet 54 1.40 1.4576 55 1.20 1.4757 56 1.00 1.4917 57 0.80 1.0000
  • 58 0.60 1.0000 This figure is referred to by Specification B3.2.1.
  • 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 T.,, temperature range from 586.4 to 587.4*F. TUp and Bottom 5 Axial Points
  • Excluded pu Tednical Specification B3.2.1 FIGURE 6 RAOC W (Z) AT 150 MWDIMTU Page 11 of 14

COLR for VEGP UNIT 2 CYCLE 12 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 1.4367 7 10.80 1.4202 8 10.60 1.3988 1 9 10.40 1.3756 10 10.20 1.3483 11 10.00 1.3181 12 9.80 1.2837 A

13 9.60 1.2596 14 9.40 1.2470 A 15 9.20 1.2290 A

16 9.00 1.2129

1. 4 - a 17 8.80 1.2098 A A 18 8.60 1.2105 19 8.40 1.2107 20 8.20 1.2111 A 21 8.00 1.2139 AA 22 7.80 1.2151 23 7.60 1.2135 24 7.40 1.2098 N 25 7.20 1.2042 v- 1.3A 26 7.00 1.1968 A A 27 6.80 1.1760 28 6.60 1.1662 A A 29 6.40 1.1570 30 6.20 1.1496 AA A 31 6.00 1.1610 A A 32 5.80 1.1552 33 5.60 1.1540 34 5.40 1.1619
1. 0 35 5.20 1.1712 A

A A 36 5.00 1.1798 37 4.80 1.1876 38 4.60 1.1945 39 4.40 1.2005 40 4.20 1.2054 41 4.00 1.2097 42 3.80 1.2162

1. 43 3.60 1.2235 44 3.40 1.2318 45 3.20 1.2385 46 3.00 1.2481 47 2.80 1.2623 48 2.60 1.2822 49 2.40 1.3079 50 2.20 1.3332
1. J 51 2.00 1.3580 0.0 2.0 4.0 6.0 8.0 10.0 12.0 52 1.80 1.3824 53 1.60 1.4059 Core Height - feet 54 1.40 1.4284 55 1.20 1.4496 56 1.00 1.4682
  • 57 0.80 1.0000 This figure Is referred to by Specification B3.Z1 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 ever the HFP Tav temperature range from 586.4 to 587.40 F. 61 0.00 1.0000 Top and Bottom 5 Axial Points

COLR for VEGP UNIT 2 CYCLE 12 Axial Elevation MOL-2 Point (feet) W(Z)

  • 1 12.00 1.0000
1.
  • 2 11.80 1.0000
  • 3 11.60 1.0000
  • 4 11.40 1.0000
  • 5 11.20 1.0000 6 11.00 1.2843 7 10.80 1.2791 8 10.60 1.2781
1. 9 10.40 1.2816 10 10.20 1.2836 11 10.00 1.2836 12 9.80 1.2841 13 9.60 1.2821 14 9.40 1.2773 15 9.20 1.2716 16 9.00 1.2606 17 8.80 1.2511
1. 18 8.60 1.2490 19 8.40 1.2508 20 8.20 1.2501 21 8.00 1.2532 22 7.80 1.2580 23 7.60 1.2589 24 7.40 1.2573 N 25 7.20 1.2530

- 1. 26 7.00 1.2462 27 6.80 1.2371 28 6.60 1.2261 29 6.40 1.2136 30 6.20 1.2008 31 6.00 1.1889 32 5.80 1.1801 33 5.60 1.1776

1. 34 5.40 1.1809 35 5.20 1.1836 36 5.00 1.1861 37 4.80 1.1884 38 4.60 1.1897 39 4.40 1.1894 40 4.20 1.1878 41 4.00 1.1848 42 3.80 1.1805
1. 43 3.60 1.1751 44 3.40 1.1694 45 3.20 1.1671 46 3.00 1.1704 47 2.80 1.1799 48 2.60 1.1902 49 2.40 1.2000 50 2.20 1.2095
1. 51 2.00 1.2190 0.0 2.0 4.0 6.0 8.0 10.0 12.0 52 1.80 1.2284 53 1.60 1.2376 Core Height - feet 54 1.40 1.2468 55 1.20 1.2557 56 1.00 1.2638
  • 57 0.80 1.0000 This figure Is referred to by Specification B3.IM
  • 58 0.60 1.0000
  • 59 0.40 1.0000 These W(Z) values are consdstent with Figure 5, and are valid
  • 60 0.20 1.0000
  • 61 0.00 1.0000 over the HFP Tg temperature range from 586.4 to 587.40F.

Top and Bottom 5 Axial Points

COLR for VEGP UNIT 2 CYCLE 12 Axial Elevation EOL Point (feet) W(Z)

  • 1 12.00 1.0000 1.6
  • 2 11.80 1.0000
  • 3 11.60 1.0000
  • 4 11.40 1.0000
  • 5 11.20 1.0000 6 11.00 1.2837 7 10.80 1.2756 8 10.60 1.2620 9 10.40 1.2486
1. 10 10.20 1.2395 11 10.00 1.2384 12 9.80 1.2387 13 9.60 1.2395 14 9.40 1.2389 15 9.20 1.2371 16 9.00 1.2428 17 8.80 1.2579
1. 18 8.60 1.2731 19 8.40 1.2844 20 8.20 1.2959 21 8.00 1.3034 22 7.80 1.3014 23 7.60 1.3125 24 7.40 1.3185 N

25 7.20 1.3211

- 1. A 26 7.00 1.3202 27 6.80 1.3161 A A 28 6.60 1.3090 29 6.40 1.2992 A A 30 6.20 1.2867 31 6.00 1.2724 A A 32 5.80 1.2599 A At 33 5.60 1.2522 34 5.40 1.2499

1. A A 35 5.20 1.2507 36 5.00 1.2503 37 4.80 1.2476 38 4.60 1.2426 39 4.40 1.2353 40 4.20 1.2258 41 4.00 1.2141 42 3.80 1.2009
1. 43 3.60 1.1889 44 3.40 1.1791 45 3.20 1.1685 46 3.00 1.1803 47 2.80 1.1859 48 2.60 1.1903 49 2.40 1.1946 50 2.20 1.1993 I. 51 2.00 1.2042 0.0 2.0 4.0 6.0 8.0 10.0 12.0 52 1.80 1.2099 53 1.60 1.2163 Core Height - feet 54 1.40 1.2235 55 1.20 1.2314 56 1.00 1.2394
  • 57 0.80 1.0000 This figure Is referred to by Specification B3.2I
  • 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., temperature range from 586.4 to 587.41F.
  • 61 0.00 1.0000 Top and Bottom 5 Axial Points
  • Excluded per Technical Spccification B3.2.1 FIGURE 9 RAOC W (Z) AT 20000 MWD/MTU Page 14 of 14
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