ML20205A958

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Rev 0 to VEGP Unit 1 Cycle 9 Colr
ML20205A958
Person / Time
Site: Vogtle 
Issue date: 03/31/1999
From:
SOUTHERN NUCLEAR OPERATING CO.
To:
Shared Package
ML20205A949 List:
References
NUDOCS 9903310110
Download: ML20205A958 (15)
v • d • e


Text

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V0GTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 1 CYCLE 9 l

CORE OPERATING LIMITS REPORT REVISION 0 MARCH 1999 9903310110 990325

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FDR ADOCK 05000424 P

PDR 4

I

9 COLR for VEGP UNIT 1 CYCLE 9 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for VEGP UNIT 1 CYCLE 9 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 - F,(Z) 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor - Fh 3.2.3 Axial Flux Difference 3.9.1 Boron Concentration

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i PAGE 1 of 14

COLR for VEGP UNIT 1 CYCLE 9 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 & /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 Temoerature Coefficient.(Specification 3.1.3) 2.3.1 The Moderator Temperature Coefficient (MTC) limits are:

The BOL/AR0/HZP - MTC shall be less positive than +0.7 x 10" M/k/*F for puer levels up to 70 percent RTP with a linear ramp to 0 &/l:/*F at 100 percent RTP.

The E0L/AR0/RTP-MTC shall be less negative than

-5.50 x 10 &/k/*F.2 2.3.2 The MTC Surveillance limits are:

The 300 ppm /AR0/RTP-MTC should be less negative than or equal to -4.75 x 10" M/k/*F.*

The 60 ppm

-5.35x10'/AR0/RTP-MTCshouldbelessnegativethan M/k/*F.*

where:

BOL stands for Beginning of Cycle Life ARO stands fo'r 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 ?25 stops.

2.5 Control' Bank Insertion Limits _ (Specification 3.1.6)

I 2.5.1 The control banks shall be limited in physical insertion as

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l shown in figure 3.

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' Applicable for full-power T-average of 586.4*F.

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PAGE 2 of 14 L

i COLR for VEGP UNIT 1 CYCLE 9 2.6 Heat Flux Hot Channel Factor - F,(Z) (Specification 3.2.1)

RTP 2.6.1 F,(Z) s

  • K(Z) for P > 0.5 P

RTP F,(Z) s

  • K(Z) for P s 0.5

0.5 where

P THERMAL POWER

=

RATED THERMAL POWER RTP 2.6.2 F.

2.50 2.6.3 K(Z) is provided in figure 4.

RTP 2.6.4 F,(1) s f,

  • K(Z) for P > 0.5 P
  • W(Z)

RTP F,(Z) s f,

  • K(U 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 F,(Z) penalty factors are provided in table 1.

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l PAGE 3 of 14 l

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COLR for VEGP UNIT 1 CYCLE 9 l

l 2.7 Nuclear Enthalov Rise Hot Channel Factor - F1 (Specification 3.2.2) l RTP 2.7.1 F% s F,w * (1 + H,n * (1-6) where:

P THERMAL POWER RATED THERMAL POWER RTP 2.7.2a F,

1.53 for LOPAR fuel, and l

RTP 2.7.2b F,

1.65 for VANTAGE 5 and VANTAGE + fuel 0.3 for LOPAR and VANTAGE 5 and VANTAGE + fuel j

2.7.3 P F,,

=

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 1980 ppm.'

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'This concentration bounds the condition of k,,, s 0.95 (all rods in less the most reactiva md) and subcriticality (11]. rods out) over the entire cycle.

This concentration includes additional boron to address uncertainties and B'*

depletion.

i PAGE 4 of 14 l

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COLR for VEGP UNIT 1 CYCLE 9 TABLE 1

-F,(Z) PENALTY FACTOR Cycle F,(Z)

Burnup Penalty (MWD /MTU)

Factor All Burnups 1.020 Notes:

1.

The Penalty Factor, to be applied to F,(Z) in accordance with SR 3.2.1.2, is the maximum factor by which F,(Z) is expected to increase over a 39 EFPD interval (surveillance interval of 31 EFPD plus the

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maximum allowable extension not to exceed 25% of the surveillance interval per SR 3.0.2) starting from the burnup at which the F,(Z) was determined.

PAGE 5 of 14 L

i COLR FOR VEGP UNIT 1 CYCLE 9 l

l 5.00 l

4.00 ACCEPTABLE

{

OPERATING REGION l

y E

3.00 S

REQUIRED z

SHUTDOWN 5

MARGIN x

g (1600,2.25) r j 2.00 i

O O

D UNACCEPTABLE s

OPERATING (950,1.30)

REGION 1.00 0.00 0

500 1000 1500 2000 2500 2175 1 RCS BORON CONCENTRATION (ppm)

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

PAGE 6 of 14 m

9 COLR FOR VEGP UNIT 1 CYCLE 9 5.00 (2500,4.90)

J 4.00 ACCEPTABLE

_g OPEPATING REGION c

& 3.00 (1250,2.85)

E REQUIRED SHUTDOWN MARGIN Y

is 2.00 8

H s

UNACCEPTABLE rn OPERATING REGION j

(460,1.00) 0.00 0

500 1000 1500 2000 2500 2175 1 RCS BORON CONCENTRATION (ppm)

FIGURE 2 RF 1UIRED SHUTDOWN MARGIN FOR MODES 4 AND 5 (MODE 4 WITH NO REACTOR COOLANT PUMPS RUNNING)

PAGE 7 of 14 L

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COLR F03 VEGP UNIT 1 CYCLE D (Fully Withdrawn *)

20 28.0 %, 225)

(78.0%, 225)-

/

/

[ BANK B

[

J' J

180

I 160 (100%,161) e

/

/

~

k

[ BANK,C

[

/

/

g'

/

/

/

/

2

/

/

80

[

[ BANK D 60 /

/

40

/

f~

20 2/

(30.2%,0)[

i 0

0 20 40 60 80 100 j

POWER (percent of Rated Therma'. cower) l

  • Fully withdrawn sh:JI be the condition where control rods are at a position within the interval 2225 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 RATED THERMAL POWER PAGE f af 14

COLR FOR VEGP UNIT 1 CYCLE 9 1.20 1.00 cc

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S

'WO.80 m

$ 0.60 ma

$ 0.40 Z

F = 2.50 o

R CORE sf HEIGHT K(Z) 0.20 0.000 1.000 6.000 1.000 12.000 0.925 0

0 2.0 4.0 6.0 8.0 10.0 12.0 CORE HEIGHT (ft) 2*

FIGURE 4 K(Z)- NORMALIZED Fo(Z) AS A FUNCTION OF CORE HEIGHT

o. vie 9 of 14 i

COLR FOR VEGP UNIT 1 CYCLE 9 120

(-

(+10,100) 100 UNACCEPTABLE UNACCEPTABLE n.a 80 J

/

T 3

ACCEPTABLE y

60 O

c I

(-35, 50)

(+26, 5d) 40 l

w 3:

2 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 RATED THERMAL POWER FOR RAOC PAGE 10 of 14

m COLR FOR VEGP UNIT 1 CYCLE 9 Axial Elevahon BOL Point (feet)

W(2) 1 12.00 1.0000

-**6

?

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 4

9 10.40 1.0000 l

10 10.20 1.0000 11 10.00 1.1833 12 9.80 1.1791 13 9.60 1.1759 a

14 9.40 1.1710 a

i 15 920 1.1647 16 9.00 1.1597 1.4 17 8.80 1.1609 18 8.60 1.1674 a

19 3.40 1.1 721 20 820 1.1751 21 8.00 1.1760

'a 22 7.80 1.1766 a

23 7.60 1.1793 a

24 7.40 1.1830 25 7.20 1.1840 (i

26 7.00 1.1826 3ll a

27 6.80 1.1792 1

28 6.60 1.1740 29 6 40 1.1672 n

6 30 6.20 1.1592 31 6.00 1.1960

'.2 32 5.80 1.1906 as 33 5.60 1.1914 8 6'o a'6 "

6'a a

a-6 a'

e 34 5.40 12083 6

35 520 1.2240 o

36 5.00 1.2381 37 4.80 12515 38 4.60 1.2634 39 4.40 1.2749

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40 420 12842 41 4.00 1.2954 42 3.80 13077 43 3.60 13187 44 3.40 13287 45 3.20 13381 1.0 46 3.00 13542 47 2.80 13764 0.0 2.0 4.0 6.0 S.0 10.0 12.0 48 2.60 13992 49 2.40 1.4213 CORE HEIGHT (feet) 50 2.20 1.4468 51 2.00 1.4727 52 1.80 1.0000 53 1.60 1.0000 54 1.40 1.0000 55 1.20 1.0000 56 1.00.

1.0000 57 OE0 1.0000 FIGURE 6 58 0.60 1.0000 59 0.40 1.0000 RAOC W(Z) AT 150 MWD /MTU 60 020 1.m00 61 0.00 1.0000

  • Top and Bottom 15% Excluded per Technical Specihcation B3.2.1 This figure is referred to by Technical Spedfication B3.2.1 PAGE 11 of 14 2176 1

COLR rOR VECP UNIT 1 CYCLE 9 Asial Elevation MOL1 Point (feet)

W(Z) 1.f 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

0.80 1.0000 8

10.60 1.0000 9

10.40 1.0000 10 10.20 1.0000 11 10.00 1.3220 i

12 9.80 1.3035 13 9.60 1.2879 14 9.40 1.2687 15 9.20 1.2501 a.4 16 9.00 1.2244 17 8.80 1.2110 j

18 8.60 12092 A

19 8.40 1.2101 20 820 1.2091 a

21 8.00 1.2064 22 7.80 1.2011 23 7.60 1.1960

,3 =

3 4

24 7.40 1.1946

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p 25 7.20 1.1905

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a a

26 7.00 1.1841 1

3

^

27 6.b0 1.1759 A

28 6.60 1.1660 l

"a 29 6.40 1.1547 o

..e

, aaaa 30 6.20 1.1433 a,

6 3,.

31 6.00 1.1576 32 5.80 1.1505 a

n a'

33 5.60 1.1492 i

A, 34 5.40 1.16!5 a

a 35 5.20 1.173t 36 5.00 1.1860 37 4.80 1.1941 38 4.60 1.2031

    • y 39 4.40 1.2110 40 4.20 1.2195 41 4.00 1.2293 42 3.80 1.2391 43 3.60 1.2471 44 3.40 1.2539 i

45 3.20 1.2618

.0.

46 3.00 1.2690 0.0 2.0 4.0 6.0 8.0 10.0 12.0 47 2.80 1.2838 48 2.60 1.3082 CORE HEIGHT (feet) 49 2.40 1.3309 50 2.20 13537

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51 2.00 13766 52 1.80 1.0000 53 1.60 1.0000 54 1.40 1.0000 55 1.20 1.0000 56 1.00 1.0000 FIGURE 7 57 0.80 1.0000 58 0.60 1.0000 59 0.40 1 0000 RAOC W(Z) AT 4000 MWD /MTU 60 0.20 1.0000 61 0.00 1.0000

J COLR FOR VEGP ! "IIT 1 CYCLE 9 i

Asial Elevatwn MOL-2 Point (feet)

W(Z) 1 12.00 1.0000 2

11.80 1.0000

)

3 11.60 1.0000 1

4 11.40 1.0000 j

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 1.2758 12 9.S0 1.2603 13 9.60 1.2482 14 9.40 1.2410 15 920 1.2340 1

16 9.00 1.2209

'. 4 17 8.80 1.2178 18 8.60 1.2278 19 8.40 1.2327 20 820 1.2359

}

21 8.00 1.2372 22 7.30 1.2360 23 7.60 1.2356 24 7.40 1.2391

-2 25 7.20 1.2393

^N 26 7.00 1.2364

  • N a

27 6.80 1.2312 A

a 28 6.60 1.2235 29 6.40 1.2138 a

a a

"64A4"64 a

30 620 1.2023 4

4

'a o 'oa 8

3 31 6.00 1.1883 a

3 a o 2

e 32 5.80 1.1766 i

'a 33 5.60 1.1738

'aa 34 5.40 1.1810 35 5.20 1.1912 36 5.00 1.2004 37 4.80 1.2080 38 4.60 1.2141 39 4.40 1.2186 1.1 40 4.20 1.2215 4.

4.00 12228 42 3.80 1.2226 43 3.60 1.2213 44 3.40 1.2207 45 320 1.2227 46 3.00 1.2240

  • C 47 2.80 1.2292 0.0 2.0 4.0 6.0 8.0 10.0 12.0 48 2.60 1.2412 49 2.40 1.2536 CORE HEIGHT (feet) 50 220 12657 51 2.00 1.2775 52 1.80 1.0000 53 1.60 1.0000 54 1.40 1.0000 55 120 1.0000 56 1.00 1.0000 57 0.80 1.0000 FIGURE 8 58 0.60 1.0000 59 0.40 1.0000 RAOC W(Z) AT 12000 MWD /MTU 60 020 1.0000 61 0.00 1.0000
  • Top and Bottom 15% Excluded per Techncal Specification B32.1 TNs figure is referred to by Technical Specircation 83.2.1 PAGE 13 of 14 tus

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4 COLR FOR VEGP UNIT 1 CYCLE 9 Aual Elevation EOL I'oint (feet)

W(Z) a, 1

12.00 1.0000 2

11.8 0 1.0000 3

11.60 1.0000 4

11.40 1.0000 5

11.20 1.0000 6

11.00 1.0000 l

7 10.80 1.0000

{

8 10.60 1.000C J

9 10.40 1.0000 10 10.20 1.0000 11 10.00 1.1939 12 9.80 1.1930 13 9.60 1.1935 14 9.40 1.1982 15 9.20 1.2011

4 16 9.00 1.2059 17 8.80 1.2153 18 8.60 1.2279 19 8 40 1.2427 20 S.20 1.2621 21 8.00 1.2772 22 7.80 1.2903 8

6 6" 4 23 7.60 1.3038

'.3 i

24 7.40 1.3123 a

6 6

-8 25 7.20 1.3170 a

26 7.00 1.3180 3

a,,a 6

27 6.80 1.3155 a

,6aa o 6

28 6.60 1.3098 a

3 3

6 6

29 6.40 1.3010 m

3 30 6.20 1.2897 3

31 6.00 1.2749 a4 32 5.80 1.2614 a

33 5.60 1.2539 34 5.40 1.2510 35 520 1.2548 36 5.00 1.2591 1

37 4.80 1.2607 38 4.60 1.2602 1.1 39 4.40 1.2572 40 4.20 1.2512 41 4.00 1.2474 42 3.80 1.2449 43 3.60 1.2400 44 3.40 1.2334 45 320 1.2283 1.;

46 3.00 1.2309 0.0 2.:

4.0 6.0 E.0 10.0 12.0 l$

j.2 CORE HE!GHT(feet)

};$$

51 2.00 1.2979 52 1.80 1.0000 53 1.60 1.0000 54 1.40 1.0000 55 1.20 1.0000 56 1D0 1.0000 l

FIGURE 9 57 0 80 10000 58 0.60 1.0000 RAOC W(Z) AT 20000 MWD /MTU

};eooo UUU 61 0.00 1.0000

l PAGE 14 of 14 2176 1 p-I)..

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