ML20217K804

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Rev 1 to Vegp,Unit 2 Cycle 7 Colr
ML20217K804
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 09/30/1999
From:
SOUTHERN NUCLEAR OPERATING CO.
To:
Shared Package
ML20217K759 List:
References
NUDOCS 9910260246
Download: ML20217K804 (15)
v • d • e


Text

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VOGTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 2 CYCLE 7 I

CORE OPERATING LIMITS REPORT REVISION 1 SEPTEMBER 1999 i

e 9910260246 991015 PDR ADOCK 05000424 p

PDR

COLR for VEGP UNIT 2 CYCLE 7 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for VEGP UNIT 2 CYCLE 7 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-Fo(Z) 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor-FE 3.2.3 Axial Flux Difference 3.9.1 Boron Concentration PAGE 1 of 14

COLR for VEGP UNIT 2 CYCLE 7 1

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 the NRC-approved methodologies specified in Technical Specification 5.6.5.

l 2.1 SHUTDOWN MARGIN - MODES 1 AND 2 (Technical Requirement 13.1.1) j 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) l 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:

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

i The EOUARO/RTP-MTC shall be less negative than -5.5 x 10" ak/k/F.*

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2.3.2 The MTC Surveillance limits are:

The 300 ppm /ARO/RTP MTC should be less negative than or equal to 4

-4.75 x 10 Ak/k/ F.*

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

4

-5.35 x 10 Ak/k/*F.*

where:

BOL stands for Beginning of Cycle Life ARO stands for All Rods Out i

HZP stands for Hot Zero THERMAL POWER EOL stands for End of Cycle Life RTP stands for RATED THERMAL POWER i

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 E1.6) 2.5.1 The control banks shall be limited in physical insertion as shown in Figure 3.

Applicable for full-power T-average of 586.4*F.

i PAGE 2 OF 14

1 COLR for VEGP UNIT 2 CYCLE 7 2.6 '

Heat Flux Hot Channel Factor - Fo(Z) (Specification 3.2.1)

RTP

- Fo l

2.6.1 Fo(Z) s

  • K(Z) for P > 0.5 l

P RTP Fo Fo(Z) s

  • K(Z) for P s 0.5

0.5 where

P =

THERMAL POWER RATED THERMAL POWER 1

RTP 2.6.2 Fo = 2.50 l

2.6.3 K(Z) is provided in Figure 4.

j RTP 2.6.4 '

Fo(Z) s Fo

  • KfZ) for P > 0.5 P
  • W(Z)

RTP Fo(Z) s Fo

  • KfZ) for P $ 0.5 0.5
  • W(Z)

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

2.6.6.

The Fo(Z) penalty factors are provided in Ta~ le 1.

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PAGE 3 of 14

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COLR for VEGP UNIT 2 CYCLE 7 2.7 Nuclear Enthalov Rise Hot Channel Factor - F"a (Specification 3.2.2) l l

2.7.1 FE s FEP e (1 + PFAH * (1-P))

where: P =

THERMAL POWER RATED THERMAL POWER 2.7.2 FEP 1.65

=

2.7.3 PFan 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 2002 ppm.'

  1. This concentration bounds the condition of k.n s 0.95 (all rods in less the most reactive rod) and subcriticality (gl! rods out) over the entire cycle. This concentration includes additional boron to address uncertainties and B depletion, savogtleM_.PtmoLRU2 PAGE 4 of 14 l

b

r.

l COLR for VEGP UNIT 2 CYCLE 7 i

l TABLE 1 Fo(Z) PENALTY FACTOR i

Cycle '

Fo(Z)

Burnup Penalty l

(MWD /MTU)

Factor 30 1.027 1

.150 1.027 362 1.029 575 1.029 1211 1.020 l

1424 1.021 2909 1.046 3334 1.044 3971 1.037 4395 1.050 4820 1.050 6730

.1.020 Notes:

1.

The Penalty Factor, to be applied to Fo(Z) in accordan*a 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 L

Interval per SR 3.0.2) starting from the burnup at which the Fo(Z) was determined.

l 2.

Linear interpolation is adequate for intermediate cycle bumups.

For gi cycle burnups outside the range of the table, a penalty factor of 1.020 shall j

3.

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be used.

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PAGE 5 of 14 Il l

COLR for VEGP UNIT 2 CYCLE 7 5.00

$ 4.00 4

ACCEPTABLE l

E OPERATING i

3 REGON

.d 4

I 3.00 r'b

(

2 z3 (1600,2.25) 2.00 UNACCEPTABLE E

2 OPERATING i

y (950,1.30)

REGON g 1.00 0.00 0

500 1000 1500 2000 2500 I

\\

sw RCS BORON CONCENTRATION (ppm)

FIGURE 1 REQUIRED SHUTDOWN MARGIN FOR MODES 3 AND 4 (MODE 4 WITH AT LEAST l

ONE REACTOR COOLANT PUMP RUNNING) i PAGE 6 of 14 i

COLR for VEGP UNIT 2 CYCLE 7 5.00 (2500,4.90)

$ 4.00

<3 ACCEPTABLE 1

OPERATING REGION 8 3.00 (1250,2.85)

N

)

O h 2.00 s

O UNACCEPTABLE cc OPERATING REGION g

j E*

(460,1.00)

O 500 1000 1500 2000 2500 m

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 2 CYCLE 7 (Fully Withdrawn *)

22 9 28.0 %, 225)

/ (78.0%,225)

/

/

/

[ BANK B

[

/

/

/

/

N 160' (100%,161)

^

/

/

/

/

g

[BANKC

[

1

/

/

3'

/

/

k

'oo

/

/

2 f

f 5

/

/

/

[ BANK D C

60 40

/

20

/

0 o

20 40 60 80 100 POWER (percent of rated thermal power) he in t al er s23 steps Note: The Rod Bank Insertion Umits are based on the control bank withdrawal sequence A, B, C, D and a control bank t' 4o4lp distance of 115 steps.

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

COLR for VEGP UNIT 2 CYCLE 7 1.40 1.20

+

1.00 92 h0.80 0

0.60 g

Fo = 2.50 z

CORE g 0.40 HEIGHT E y

0.000 1.000 6.000 1.000 12.000

0. 2 0.20 0

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

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

7.

COLR for VEGP UNIT 2 CYCLE 7 140 120

(-15,100)

(+10,100) el 100 f

UNACCEPTABLE g

UNACCEPTABLE e

f

\\

80 2

/

T m

5 L

f ACCEPTABLE

\\

wl 60 e

/

\\

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(-30,50)

(+26, 50) g 40 1

20 i

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-50

-40

-30

-20

-10 0

10 20 30 40 50 AXIALFLUX DIFFERENCE (percent AFD) i FIGURE 5 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF % OF RATED THERMAL POWER FOR RAOC l

I PAGE 10 of 14 1

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COLR for VEGP UNIT 2 CYCLE 7 AMal Elevation BOL Point (feed W(a) 1 12.00 1.0000 l

2 11.80 1.0000 3

11.60 1.0000 4

11.40 1.0000 5

11.20 1.0000 1.6u_

6 11.00 1.0000 7

10.80 1.0000 L

8 10.60 1.0000 9

10.40 1.0000 10 10.20 1.0000 11 10.00 1.3090

}

12 9.80 1.3040 13 M

IM 1*SC 14 9.40 1.2860 15 9.20 1.2742 16 9.00 1.2598 L

17 8.80 1.2498 18 8.60 1.2485 19 8.40 1.2479 20 8.20 1.2490 1.4C 21 8.00 1.2392 22 7.80 1.2355 23 7.60 1.2344 24 7.40 1.2298 25 7.20 1.2252 26 7.00 1.2147 8

a 27 6AD 1.2044 28 6.60 1.1929

, g g

,6 a

1.3C 29 6.40 1.1809 1

A 30 6.20 1.1702

]

A A

31 6.00 1.2049 A

'^a 32 5.80 1.1930 1

33 5.60 1.1859 i

-N AF 34 5.40 1.1856 I

C 35 5.20 1.1948 -

2 36 5.00 1.2052 k

a m

1.2C 37 4A0 1.2136 aa a

38 4.60 1.2213 M

a A

39 4.40 1.2277 40 4.20 1.2328 41 440 1.2365 i

42 3JO 1.2393 43 3.60 1.2417 44 3.40 1.2430 1.1C 45 3.20 1.2439 46 3.00 1.2508 47 2A0 1.2622 48 2.60 1.2747 49 2.40 1.2892 50 2.20 1.3077 51 2.00 1.3268 52 1.80 1.0000 1.On

'O 2

4 6

8 10 12 53 1.60 14000 54 1.40 1.0000 55 1.20 1.0000 CORE HEIGHT (feet) 56 1.00 1.0000 57 0A0 1.0000 58 0.60 14000 TNs agure le referred to tw Tednical M

0.40 14000 60 0.20 1.0000 spedsomeon 8311 61 0.00 1.0000 t

  • Top and Boneen 18% Emohdod per Technkel *M B3.2.1 FIGURE 6 RAOC W(Z) AT 150 MWD /MTU PAGE 11 of 14

COLR for VEGP UNIT 2 CYCLE 7 Anal Elevation MOI.1 Point (feet)

W(a) 1 12.00 1.0000 2

11.80 1.0000 3

U.60 1.0000 4

11.40 1.0000 5

11.20 1.0000 1.60 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 1.3450 12 9A0 13216 1.5C 13 9.60 1.3022 14 9.40 1.2791 15 920 1.2549 16 9.00 12387 17 8.80 1.2363 18 8.60 1.2412 19 8.40 1.2427 20 8.20 12461 1.4C 21 8.00 1.2472 22 7.80 12448 23 7.60 1.2398 24 7.40 1.2322 a

a 25 720 12225 26 7.00 1.2108 4

27 6.80 1.1973 3:

A 28 6.60 1.1828 i

1.3C 29 6.40 1.1692 A

A 30 620 1.1565 a

31 6.00 1.1697 A

32 5.80 1.1618 mg

  1. g 33 5.60 1.1583 A

34 5.40 1.1620 a

A 35 520 1.1717 h

4 36 5.00 1.1812 i

1.20 g

37 4.80 1.1893 o

38 4.60 1.1967 A

dk4 39 4.40 1.2029 MA 40 420 1.2077 41 440 12165 42 3.80 1.2269 43 3.60 1.2350 44 3.40 12420 1*10 45 3.20 1.2473 46 3 'JO 1.2543 47 2J0 1.2672 48 2.60 1.2868 49 2.40 13102 50 220 13333 51 2.00 13559 52 1.80 14000 1.00 0

2 4

6 8

10 12 53 1.60 1.0000 1.0000 1'.40 54 CORE HEIGHT (feet) l 20 1.0000 55 56 1.00 1.0000 57 0.80 1.0000 58 0.60 1.0000 M

OM 1.0000 This flowsis rotermd e twTechniod Spedecation B3.f 1 60 0.20 1.0000 61 0.00 1.0000

  • Top and Botem 15% E=dM per Technical SpedScallon B3.2.1 FIGURE 7 RAOC W(Z) AT4000 MWD /MTU PAGC.12 of 14

e COLR for VEGP UNIT 2 CYCLE 7 A4al Elevation MOL2 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 1*60 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 9JO 1.2566 13 9.60 1.2395 1.50 if 9.40 1.2328 15 9.20 1.2258 16 9.00 12149 17 8.80 1.1987 18 840 1.1894 19 8.40 1.1999 20 8.20 1.2102 1*4C 21 8.00 1.2164 22 7JO 1.2241 23 740 1.2333 24 7.40 1.2380 25 7.20 1.2396 26 7.00 1.2384 27 6J0 1.2343 d'

28 6.60 1.2278 1.30 29 6.40 1.2190 1

30 6.20 1.2083 a

d6 31 6.00 1.1954

}

A 32 SJO 1.1836 h

33 5.60 1.1813

\\

Mg

/

34 5.40 1.1927 A

35 5.20 1.2043 g

a

%d6 o

36 5.00 1.2143

. e 37 4J0 1.2229 1.2C asL A

0 38 440 1.2299 39 4.40 1.2352 40 4.20 1.2389 41 4.00 1.2406 42 3JO 1.2416 43 340 1.2425 44 3.40 1.2431 1.1C 45 3.20 1.2445 46 3.00 1.2530 47 2JO 1.2671 48 2.60 1.2821 49 2.40 1.2961 50 2.20 1.3096 51 2.00 1.3226 52 1.80 1.0000 1.00 53 1.60 1.0000 0

2 4

6 8

10 12 54 1.40 1 0000 CORE HEIGHT (feet) 55 1.20 1.0000 56 1.00 1.0000 57 OJO 1.0000 58 0.60 1.0000 59 0.40 1.0000 This fleure le referred to by Technical 60 0.20 1.0000 SpedAcenon 83.2.1 61 0.00 1.0000

  • Top and Botem 15% Excluded per Todwical Spedicadon 83.2.1 FIGURE 8 RAOC W(Z) AT 11000 MWD /MTU PAGE 13 of 14

d COLR for VEGP UNIT 2 CYCLE 7 Axial Elevation EOL Point (feet)

W(z) 1 12.00 1.0000 2

11.80 1.0000 3

11.f ~

1.0000 4

11.40 1.0000 5

11.20 1.0000

1. 6 0'~

6 11.00 1.0000 7

10.80 1.0000 8

10.60 1.0000 i

9 10.@

1.0000 10 10 20 '

1.0000 11 10.00 1.2238 12 9.80 7 2214 13 9.60

14. >

1.5C 14 9.40 1.2164 15 920 1.2101 16 9.00 1.2128 17 8.80 1.2177 18 8.60 L2192 19 8.40 1.2273 20 8.20 1.2493 1.4C 21 8.00 1.2708.

22 7.80 1.2867 23 7.60 12993 24 7.40 1.3081 25 720 1.3133 26 7.00 13151 b

27 6.00 13137

/4 28 6.60 1.3092 3; 1.3C 29 6.40 1.3020 a

e 30 6.20 1.2940 o

a p

31 6.00 1.251 n

L A

32 5JO 1.2760 33 5.60 1.2600 a

4 34 5.40 1.2657 k[

35 520 1.2707 36 540 1E67 1.2C 37 4g gy,9 38 4.60 1.2809 39 4.40 1.2792 40 4.20 1.2751 41 4.00 12683 42 3J0 1.2614 43 340 1.2552 44 3.m 12465 1.1C 45 3.20 1.2356 46 3.00 1.2354 47 2JO 1.2448 48 2A0 1.2562 49 2.40 1.2680 50 2.20 1.2796 i

51 2.00 1.2911 52 1Jo 1.0000 1.Oo 53 1.60 1.0000 0

2 4

6 8

10 12 54 1.40 1.0000 55 120 14000 CORE HEIGHT (leet) 56 1D0 1.0000 57 OJO 1.0000 58 0.60 1.0000 59 0.40 1.0000 TNs Agweis reimrod to gTodnical 60 0.20 1.0000 W K1 61 0.00 1.0000

  • Top and Boemn 18% Excluded per Technkel 9W% B3.2.1 FIGURE 9 RAOC W(Z) AT19000 MWD /MTU PAGE 14 of 14 i

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