ML020930163

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Cycle 11 Core Operating Limits Report
ML020930163
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 03/28/2002
From: Beasley J
Southern Nuclear Operating Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
LCV-1609
Download: ML020930163 (16)
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Text

J. Barnie Beasley, Jr., P.E. Southern Nuclear Vice President Operating Company, Inc.

40 Inverness Center Parkway Post Office Box 1295 Birmingham, Alabama 35201 Tel 205,992.7110 Fax 205.992.0403 SOUTHERN .. 4A COMPANY Energy to Serve Your WorldSM March 28, 2002 LCV- 1609 Docket Nos: 50-424 50-425 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 Ladies and Gentlemen:

VOGTLE ELECTRIC GENERATING PLANT UNIT 1 CYCLE 11 CORE OPERATING LIMITS REPORT 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 1 Cycle 11 Core Operating Limits Report (COLR).

Sincerely, JBB/RJF Attachment cc: Southern Nuclear Operating Compan'y Mr. J. T. Gasser Mr. M. Sheibani SNC Document Management U. S. Nuclear Regulatory Commission Mr. L. A. Reyes, Regional Administrator Mr. F. Rinaldi, Vogtle Project Manager, NRR Mr. J. Zeiler, Senior Resident Inspector, Vogtle po o(

VOGTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 1 CYCLE 11 CORE OPERATING LIMITS REPORT REVISION 0 MARCH 2002

COLR for VEGP UNIT 1 CYCLE 11 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for VEGP UNIT 1 CYCLE 11 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 - F H 3.2.3 Axial Flux Difference 3.9.1 Boron Concentration PAGE 1 of 14

COLR for VEGP UNIT 1 CYCLE 11 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 BOLJARO/HZP - MTC shall be less positive than +0.7 x 10-4 Ak/k/lF for power levels up to 70 percent RTP with a linear ramp to 0 Ak/kPOF at 100 percent RTP.

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

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

-5.35 x 104 Ak/k/0 F. 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 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.

1Applicable for full-power T-average of 586.4 0 F to 587.40 F.

PAGE 2 of 14

COLR for VEGP UNIT 1 CYCLE 11 2.6 Heat Flux Hot Channel Factor - FQ(Z) (Specification 3.2.1)

RTP Fa 2.6.1 Fo(Z) -

  • K(Z) for P > 0.5 P

RTP Fo F 0(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 FQ(Z)* Fon *K(Z) for P > 0.5 P *W(Z)

RTP FQ(Z) <*F

  • 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 11 2.7 Nuclear Enthalpy Rise Hot Channel Factor - FNH (Specification 3.2.2) 2.7.1 F*H!FT (1 + PFAH * (l-P))

where: P = THERMAL POWER RATED THERMAL POWER 2.7.2 F = 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 1970 ppm.1

'This concentration bounds the condition of kef < 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 B13depletion.

PAGE 4 of 14

COLR for VEGP UNIT 1 CYCLE 11 TABLE 1 Fo(Z) PENALTY FACTOR Cycle Fa(Z)

Burnup Penalty (MWD/MTU) Factor 30 1.020 150 1.030 363 1.029 576 1.025 789 1.022 1002 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 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 1 CYCLE 11 nn-t3f3 I I

,J .UU ACCEPTABLE OPERATING REGION z 3.00 -

I _________________ L REQI UIRED SHUT DOWN

  • 1 (2500, 3.1jjo 0010 MAt RGIN z0 (1600,Z.50 D' AA-- I _ __ _ _ _ 1 I__ 4 mB Z.uu o3 UNACCEPTABLE OPERATING (950, 1.30) REGION 1.00 I + t -~~~~~I-----------

1.00 -

A nrI J AA 0 500 1000 1500 2000 2500 21r5-1 RCS BORON CONCENTRATION (ppm)

FIGURE 1 REQUIRED SHUTDOWN MARGIN FOR MODES 3 AND 4 (MODE 4 WITH AT LEAST ONE REACTOR COOLANT PUMP RUNNING)

PAGE 6 of 14

COLR for VEGP UNIT 1 CYCLE 11 Y

5.00 p (2500, 4.90) i2 4.00 1 4 ACCEPTABLE OPERATING REGION i I 000 E 3.00 (1250, 2.85) z REQUIRED SHUTDOWN MARGIN O* 2.00

/

0 I-co UNACCEPTABLE

..1- OPERATING REGION A I -

1.4t3t3 nn-m i r (460,1.00)

A' nn, 0 500 1000 1500 2000 2500 2176-1 RCS BORON CONCENTRATION (ppm)

FIGURE 2 REQUIRED SHUTDOWN MARGIN FOR MODES 4 AND 5 (MODE 4 WITH NO REACTOR COOLANT PUMPS RUNNING)

PAGE 7 of 14

COLR for VEGP UNIT 1 CYCLE 11 (Fully Withdrawn *)

225 220 280%225) (78.0%, 225-1 14 200 BNKB KB 180 160 r(0%. 161) _ (100%, 161) z 4-o 140 BANKC __

0)

(0 80o 120/-

100

/ I 80 BANK D 0

cc O 60 40 *(0%, 46) /

20 A nI (30.2%, 0)-

0 20 40 60 80 100 POWER (percent of Rated Thermal Power) 2175-1

  • Fully withdrawn shall be the condition where control rods are at a position within the interval ;225 and s231 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 1 CYCLE 11 1.20 1.00 0

I 0.80 CD IL 0.60 N 2 z

0.4 F0 =2.50 CORE HEIGHT KZ 0.2 0o 0.000 1.000 6.000 1.000 12.000 0.925 n _ ___L_._

0 2.0 4.0 6.0 8.0 10.0 12.0 2175-"

CORE HEIGHT (ft)

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

COLR for VEGP UNIT 1 CYCLE 11 12[I "1 Vt I I I, I

(-12, 100) (+10, 100)1_____

100 UNACCEPTABLE UNACCEPTABLE

0t 80 ACCEPTABLE "C

60 n

-o a, (-25, 50) (+26, 50) 40 w

20

0) - - - - -~-L

-5C ) -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 1 CYCLE 11 Axial Elevation BOL Point

  • t 1 11.80 1.0000
  • t 2 11.60 1.0000
  • 1 3 11.60 1.0000 4 11.20 1.0000 5 11.00 1.0000
  • t 6 10.80 1.0000 7 10.60 1.0000 It 8 10.40 1.0000 9 10.20 1.0000 10 11 10.00 1.3488 12 9.80 1.3221 13 9.60 1.2927 14 9.40 1.2699 15 9.20 1.2496 16 9.00 1.2289 17 8.80 1.2186 18 8.60 1.2164 19 8.40 1.2196 20 8.20 1.2203 21 8.00 1.2243 22 7.80 1.2299 23 7.60 1.2317 24 7.40 1.2313 N 25 7.20 1.2286 26 7.00 1.2240 27 6.80 1.1935 28 6.60 1.1859 29 6.40 1.1784 30 6.20 1.16%

31 6.00 1.1592 32 5.80 1.1539 33 5.60 1.1546 34 5.40 1.1643 35 5.20 1.1783 36 5.00 1.1924 37 4.80 1.2053 38 4.60 1.2176 39 4.40 1.2290 40 4.20 1.2393 41 4.00 1.2484 42 3.80 1.2526 43 3.60 1.2570 44 3.40 1.2602 45 3.20 1.2609 46 3.00 1.2694 47 2.80 1.2865 48 2.60 1.3060 49 2.40 1.3252 50 2.20 1.3451 51 2.00 1.3659

.0 6.0 8.0 12.0  :

41 52 53 54 1.80 1.60 1.A0 1.0000 1.0000 1.0000 Core Height - feet *t 55 1.20 1.0000

  • t 56 1.00 1.0000
  • t 57 0.80 1.0000 58 0.60 1.0000 59 0.40 1.0000 "Thisfigure ib referred to by Spedfication B32..1 *t 60 0.20 1.0000 61 0.00 1.0000 Top and Bottom 15% Excluded per Tedgcal SpedficationB I32.1 These W(Z) values are consistent with Figure 5 and are valid over the HFP Tavg temperature range from 586.4 0F to 587.40 F.

FIGURE 6 RAOC W(Z) AT 150 MWD/MTU PAGE 11 of 14

COLR for VEGP UNIT 1 CYCLE 11 Elevation MOL-1 Point

  • 1 12.00
  • 2 11.80 1.0000
  • 3 11.60 1.0000
  • 45 11.40 1.0000
  • 11.20 1.0000
  • 6 11.00 1.0000 7

8 10.80 1.0000 10.60 1.0000

  • 9 10.40 1.0000
  • 10 10.20 1.0000 11 10.00 1.3554 12 9.80 1.3231 13 9.60 12937 14 9.40 12756 15 9.20 12540 16 9.00 12404 17 8.80 12.374 18 8.60 1.2374 19 8.40 12406 20 8.20 12412 21 8.00 1.2392 22 7.80 1.2351 23 7.60 1.2290 24 7.40 1.2211 N 25 7D0 12114 26 7.00 12001 27 6.80 1.1776 28 6.60 1.1680 29 6.40 1.1582 30 620 1.1499 31 6.00 1.1606 32 5.80 1.1548 33 5.60 1.1516 34 5.40 1.1560 35 5.20 1.1633 36 5.00 1.1702 37 4.80 1.1763 38 4.60 1.1816 39 4.40 1.1861 40 4.20 1.1896 41 4.00 1.1924 42 3.80 1.1987 43 3.60 1.2063 44 3.40 12125 45 3.20 12202 46 3.00 1.2329 47 2.80 12525 48 2.60 1.2766 49 2.40 13002 50 2.20 13236 51 2.00 1.3469
  • 52 1.80 1.0000 12.0 53 1.60 1100 0.0 2.0 4.0 6.0 8.0 10.0 ** 54 1.40 1.0000
  • 55 1.20 1)000 Core Height - feet
  • 56 1.00 1.0000
  • 57 0.80 1.0000
  • 58 0.60 1.0000
  • 59 0.40 1.0000 This fige Is referred to by Specification I3V 1
  • 60 0.20 1I0000
  • 61 0.00 1.000 Top and Bottom 15% Exduded per Technical Spedfication B3.2.1 These W(Z) values are consistent with Figure 5 and are valid over the HFP Tavg temperature range from 586.40Fto 587.40F.

FIGURE 7 RAOC W(Z) AT 4000 MWD/MTU PAGE 12 of 14

COLR for VEGP UNIT 1 CYCLE 11 Axial Elevation MOL-2 Point (1ee W0 6 . 1 1 79 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
1. ,J
  • 8 10.60 1.0000 9 10.40 1.0000
  • 10 10.20 1.0000 11 10.00 1.3024 12 9.80 1.2899 13 9.60 1.2855 14 9.40 1.2785 15 9.20 1.2662 16 9.00 12544 17 8.80 1.2405 18 8.60 1.2309 19 8.40 1.2321 20 8.20 1.2315

. 21 8.00 1.2334 22 7.80 1.2390 N 23 7.60 12405

.24 7.40 1.2397 25 7.20 12362

'-1 L11LL-----Ii IIL 26 7.00 1.2305 AA 27 6.80 1.2225 28 6.60 1.2127 29 6.40 1.2015 30 .620 1.1898 AAA, Aa1 A 31 6.00 1.1781 A' 32 5.80 1.1699 A 33 5.60 1.1679 1.:2 34 35 5.40 5520 1.1710 1.1753 36 5.00 1.1785 37 4.80 1.1803 38 4.60 1.1808 39 4.40 1.1799 40 4.20 1.1778 41 4.00 1.1739 42 3.80 1.1707

1. 43 3.60 1.1693 44 3.40 1.1673 45 3.20 1.1659 46 3.00 1.1659 47 2.80 1.1698 48 2.60 1.1775 49 2.40 1.1856 50 2.20 1.1937

-51 2.00 12025 1 ri - 52 1.80 1.0000 0.0 2.0 4.0 6.0 8.0 10.0 12.0

  • 53 54 1.60 1.40 1.0000 1.0000 Core Height - feet
  • 55 1.20 1.0000 56 1.00 1.0000
  • 57 0.80 1.0000 58 0.60 1.000
  • 59 0.40 1.0000 This figure is referred to by Spedflcation 3.2.1 60 0.20 1.0000 61 0.00 1.0000 Top and Bottom 15% Exduded per Techmial Spedaiction B3.2.

These W(Z) values are consistent with Figure 5 and are valid over the HFP Tavg temperature range from 586.40Fto 587.4 0F.

FIGURE 8 RAOC W(Z) AT 12000 MWD/MTU PAGE 13 of 14

COLR for VEGP UNIT 1 CYCLE 11 Axial Elevation EOL Point

'II II6 I

  • 1 11.80 1.0000 2 11.60 1.0000 3 11.40 1.0000 4 11.20 1.0000 5 11.00 1.0000 6 10.80 1.0000 P 7 10.60 1.0000
1. 5-I
  • 8 10.40 1.0000 9 10.20 1.0000 10 11 10.00 1.2251 12 9.80 1.2274 13 9.60 1.2273 14 9.40 1.2268 15 9.20 1.2255 16 9.00 1.2335 17 8.80 1.2507 18 8.60 1.2647 19 8.40 1.2749 20 8.20 1.2862 21 8.00 1.2946 22 7.80 1.2917 23 7.60 1.3028 24 7.40 1.3092 v 1.3 25 7.20 1.3121 A hA 26 7.00 1.3116 27 6.80 1.3079 A 28 6.60 1.3012 29 6.40 1.2918 30 6.20 12800 SA 'AAAA 31 6.00 1.2653 32 5.80 1.2501 33 5.60 1.2416 A A* 34 5.40 1.2419 1.2 hAA*A 35 5.20 1.2441 36 5.00 1.2443 37 4.80 1.2424 38 4.60 1.2382 39 4.40 1.2318 40 4.20 1.2234 41 4.00 1.2120 42 3.80 1.2016 43 3.60 1.1940 1.1 44 3.40 1.1850 45 3.20 1.1746 46 3.00 1.1772 47 2.80 1.1760 48 2.60 1.1823 49 2.40 1.1875 50 220 1.1955 51 2.00 1.2045 1.01t
  • 52 1.80 1.0000 00 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 58 0.60 1.0000 59 0.40 1.0000 This figure Is referred to by Spedfication B3..Li
  • 60 0.20 1.0000 61 0.00 1.0000
  • Top and Bottom 15% Exduded per Tecnical Specfition B32-1 These W(Z) values are consistent with Figure 5 and are valid over the HFP Tavg temperature range from 586.40 F to 587.4 0F.

FIGURE 9 RAOC W(Z) AT 20000 MWD/MTU PAGE 14 of 14

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