ML20134A050

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VEGP Unit 2 Cycle 6 COLR, Rev 1
ML20134A050
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 01/22/1997
From:
GEORGIA POWER CO.
To:
Shared Package
ML20134A031 List:
References
NUDOCS 9701280150
Download: ML20134A050 (15)
v • d • e


Text

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I V0GTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 2 CYCLE 6 CORE OPERATING LIMITS REPORT REVISION 1 January 1997 l

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l 9701290150 970122 PDR ADOCK 05000424 P PDR e

COLR for VEGP UNIT 2 CYCLE 6 l

1.0 CORE OPERATING LIMITS REPORT This core Operating Limits Report (C01,R) for VEGP UNIT 2 CYCLE 6 has been I prepared in accordance with the requirements of Technical Specification 5.6.5. I 1

The Technical Requirement affected by this report is listed below: l 13.1.1 SHUTDOWN MARGIN - MODES 1 and 2 l

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) ,

1 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

l COLR for VEGP UNIT 2 CYCLE 6 I l

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.

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 1.3% M/k. l 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. l l

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 power levels up to 70% RTP with a linear ramp to l O M/k/*F at 100% RTP.

The EOL/AR0/RTP-MTC shall be less negative than -5.5 x 10

  • M/k/*F.*

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 /AR0/RTP-MTC should be less negative than or equal to

-5.35 x 10-' M/k/*F.*

where: BOL stands for Beginning of Cycle Life AR0 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 insert.on as shown in Figure 3.

a

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

PAGE 2 0F 14

1 COLR for VEGP UNIT 2 CYCLE 6 k

2.6 Heat Flux Hot Channel Factor - F,(Z) (Specification 3.2.1) p RTP Q

2.6.1 F,(Z) s

  • K(Z) for P > 0.5 P

p RTP Q

F,(Z) s

  • K(Z) for P s 0.5

0.5 where

P - THERMAL POWER RATED THERMAL POWER 2.6.2 F,RTP = 2.50 2.6.3 K(Z) is provided in Figure 5.

2.6.4 F,(Z) s for P > 0.5 P

  • W(Z)

F,(Z) s for P s 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.

PAGE 3 of 14 l

l

COLR for VEGP UNIT 2 CYCLE 6 2.7 N_yclear Enthalov Rise Hot Channel Factor - FK (Specification 3.2.2) i 2.7.1 F1 s F.R,TP* (1 + PF , * (1-P)) j l

where: P = THERMAL POWER RATED THERMAL POWER I

2.7.2a R P F.,T = 1.53 for LOPAR fuel, and 2.7.2b F,RU - 1.65 for VANTAGE 5 fuel I

2.7.3 PF., = 0.3 for LOPAR and VANTAGE 5 fuel 2.8 Axial Flux Difference (Specification 3.2.3) 2.8.1 The Axial Flux Difference (AFD) Acceptable Operation Limits are provided in Figure 4.

2.9 Boron Concentration (Specification 3.9.1) 2.9.1 The boron concentration shall be greater than or equal to 2008 ppm.'

l l

  1. This concentration bounds the conditions of k,,, s 0.95 (all rods in less the most reactive rod) and subtriticality (All rods out) over the entire cy*cle. This concentration includes additional boron to address uncertainties and B depletion, ks\wp\vegtle\ COLA.U2 PAGE 4 of 14

COLR for VEGP UNIT 2 CYCLE 6 l TABLE I F,(Z) PENALTY FACTOR  ;

Cycle Fo (Z)

Burnup Penalty (MWD /MTU) Factor l 30 1.028 150 1.028 574 1.039 997 1.043 1633 1.041 1844 1.033 2268 1.026 2692 1.025 3115 1.025 3539 1.023 3963 1.021 4174 1.020 Notes:

1. The Penalty Factor, to be applied to Fo(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 F,(Z) was determined.
2. Linear interpolation is adequate for intermediate cycle burnups,
3. For 11]. cycle burnups outside the range of the table, a penalty factor of 1.0200 shall be used.

PAGE 5 of 14

COLR FOR VEGP UNIT 2 CYCLE 6 5.00

$ 4.00 2 ACCEPTABLE 8 OPERATING g REGION S

(2500,3.1b b 3.00 z

(1600,2.25)

[

0 2.00 e

m O UNACCEPTABLE E s OPERATING D (950,1.30) REGION I l

8 1.00 x

O 500 1000 1500 2000 2500 21751 RCS BORON CONCENTRATION (ppm) i 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 2 CYCLE 6 5.00 (2500,4.90)

$ 4.00

< ACCEPTABLE E OPERATING

@ REGION E

5 3.00

/

m (1250,2.85) z 3:

8 g 2.00

)

5 UNACCEPTABLE

@ OPERATING m

REGION g j

$' (460,1.00) j 0.00 2500 0 500 1000 1500 2000 l 217bt j RCS BORON CONCENTRATION (ppm) l l

i I'

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

PAGE 7 of 14 f l

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COLR FOR VEGP UNIT 2 CYCLE 6 (Fully Withdrawn *)

4 28.0 %,225)-

/ / (78.0%,225)- ,

/ / \

[ BANK B [

J A ?

180

- [(0%,161) ' [ '

(100 %,161) l e

t 160

/ /

140

{ [ BANK C [

E z 120

/ /

9 [ [

100

/ /

5 / /

o [ [ BANK D 60

/ /

40 f(0%,46) [

/

20 2 f

/

(30.2%,0)[

20 40 60 80 100 0

(Fully inserted) **

POWER (percent of rated therrnal power)

  • Fully withdrawn shall be the condition where control rods are at a position within the interval 2225 and s231 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 THERMAL POWER PAGE 8 of 14

COLR FOR VEGP UNIT 2 CYCLE 6 140 120 (9"iF) (+10,100) e 100

{

n- UNACCEPTABLE UNACCEPTABLE 80 B

/ \'

so ACCEPTABLE 60 L I \

(+26,50)

@ (-35, 50) 3:

o 40 l 1

l 20  !

l 0

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

l FIGURE 4 l l

AXtAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER ,

I FOR RAOC PAGE 9 of 14

COLR FOR VEGP UNIT 2 CYCLE 6 1.40 1

1.20 0

I 1.00 e

E N l y 0.80 8

u d 0.60 2

g Fo= 2.50 z CORE 0 .40 HEIGHT K(Z) h 3;r 0.000 1.000 6.000 1.000 12.000 OS25 0.20 0

0 2.0 4.0 6.0 8.0 10.0 12.0 I

CORE HEIGHT (ft) ,

I l

FIGURE 5 l

K(Z)- NORMALIZED FO (Z) AS A FUNCTION OF CORE HEIGHT

\

FAGE 10 of 14

COLR FOR VEGP UNIT 2 CYCLE 6 Axial Elevanon BOL Point (feet) W(z) 1 12.00 1.0000 1.60

  • 2 11E0 1.0000 3 1140 1.0000 4 11.40 1.0000 5 11.20 1.0000 6 11.00 1.0000 7 10E0 1.0000 8 1040 1.0000 1*5C 9 10.40 1.0000 10 10.20 IIl000 11 10.00 1.2793 12 9.80 1.2637 13 9.60 1.2522 14 9.40 1.2408 15 9.20 1.2282 16 9.00 1.2140 1.4C 17 8.80 1.2089 18 8.60 1.2097 19 8.40 1.2114 20 8.20 1.2166 21 8.00 1.2200 22 7.80 1.2200 23 7.60 1.2178 A 24 7.40 1.2132

- 1.3C 25 7.20 1.2065 N

- A 26 7.00 1.1981 a

3 g g 27 6.80 6.60 1.1580 1.1770 i 28 A 29 6.40 1.1660 A 30 6.20 1.1545 1*2C

(^ /Q 31 32 33 6.00 5.80 5.60 1.1642 1.1526 1.1488 Al AI 4 Ai 34 5.40 1.1562 35 5.20 1.1680 l& ^aA A l 36 5.00 1.1797 37 4.80 1.1902 38 4.60 1.1999 39 4.40 1.2085 40 4.20 1.2157 1*1C - - ~ . .

41 4.00 1.2220

, 42 3.80 1.2263 l 43 3.60 1.2302 44 3.40 1.2363 45 3.20 1.2428 1 46 3.00 1.2491 l 47 2.80 1.2625 1.On 48 2.60 1.2547 0 2 4 6 8 10 12 49 2.40 1.3073 50 2.20 1.3296 51 2.00 1.3515 52 1.80 1.0000 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 This figure is rt.! erred to by Technical
  • 5 Speofication 83.2.1 ,

{.

61 0.00 1.0000

  • Top and Bottom 15% Excluded per Technical Speofication B3.2.1 FIGURE 6 RAOC W(Z) AT 150 MWD /MTU PAGE 11 Of 14

COLR FOR VEGP UNIT 2 CYCLE 6 Axial Elevanon MOL-1 Pomt (feet! W(z) 1 12.00 1.0000 A. 60

  • 2 11.80 1.0000 3 11.60 1.0000 d

4 11.40 1.0000 5 1120 1.0000 6 11.00 1.0000 7 10.80 1.0000 8 10.60 1.0000 1.50

  • 4 10.40 1.0000 10 10.20 1.0000 11 10.00 IJ303 12 9.80 1.3018 13 9.60 1.2744 14 9.40 1.2468 15 920 1.2322 16 9.00 1.2165 1.40 17 8.80 1.2064 18 8.60 1.2063

, 19 8.40 1.2069 20 8.20 1.2104 a 21 3.00 1.2120 a 22 7.80 1.2104 A 23 7.60 12067

, , 24 7.40 12006 g 1.30 25 7.20 1.1929

- a 26 7.00 1.1834 3 A

' 27 6.80 1.1723 28 6.60 1.1604 a 29 6.40 1.1487 I & 30 6.20 1.1359 a 31 6.00 1.1373

  • i 32 5.80 1.1295 1*2C 5.60 1

4, ga'- 33 1.1289 a 34 5.40 1.1423 a -g] 35 5.20 1.1547

!A 36 5.00 1.1657

& g" 37 4.80 1.1763 M 38 4.60 1.1859 39 4.40 1.1945 1.10 40 420 1.2019 41 4.00 1.2079 42 3.80 1.2132 43 3.60 1.2186 44 3.40 1.2244 45 3.20 1.2334 46 3.00 1.2406 47 2.80 1.2546 1.00 48 2.60 1.2792 0 2 4 6 8 10 12 49 2.40 1.3017 50 220 1.3239 51 2.00 1.3460 52 1.80 1.0000 53 1.60 1.0000 CORE HEIGHT (feet) 54 1.40 1.0000 55 120 1.0000 56 1.00 1.0000 57 0.80 1.0000 58 0.60 1.0000 This fqure is referred to by Technical

  • 59 0.40 1.0000 Spoofication B3.2.1 .

60 0.20 1.0000 61 0.00 1.0000

  • Top and Bottom 15% Excluded per Technical Speofication B3.2.1 FIGURE 7 RAOC W(Z) AT 4000 MWD /MTU PAGE 12 Of 14

l COLR FOR VEGP UNIT 2 CYCLE 6 Amal Elevanon MOL-2 Pomt Hect) W(zl 1 12.00 1.0000 1.60  ;

2 11.80 1.0000 l 3 11.60 1.0000 4 11.40 1.0000 5 11.20 1.0000 i 6 11.00 1.0000 I

  • 7 10.80 1.0000 l 8 10.60 1.0000 1.5C 9 10.40 1.0000 10 10.20 1.0000 11 10.00 1.2476 12 9.80 1.2311 13 9.60 1.2166 14 9.40 1.2056 15 920 1.1937 16 9.00 1.1894 1.40 '

17 8.80 1.1592 18 8.60 1.1899 l

l 10 8.40 1.2000

' l 20 8.20 1.2109 21 8.00 1.2192 l 22 7.80 1.2244 l 1 23 7.60 1.2270 I I 24 7.40 1.2268

^

1.3C a 25 7.20 1.2243 N A 26 7.00 1.2194

  • A 27 6.80 1.2125 N A, 28 6.60 1.2038

" 29 6.40 1.1939

& 30 6.20 1.1840 l k ^ ^gb g

^ A

& 31 32 6.00 5.80 1.1721 1.1620 1*2C a

' ' V 33 34 5.60 5.40 1.1618 1.1738

'g 35 520 1.1541 36 5.00 1.1939 37 4.80 1.2040 38 4.60 1.2130 39 4.40 1.2204

' 40 4.20 1.2262

    • 10 41 4.00 1.2304 ,

42 3.80 1.2330 43 3.60 1.2339 44 3.40 1.2337 45 3.20 1.2351 46 3.00 1.2407 47 2.80 1.2506 1.00 48 1.60 1.2623 0 2 4 6 8 10 12 49 2.40 1.2732 50 2.20 1.2837 51 2.00 1.2941 52 1.80 1.0000 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 f t on B .21

RAOC W(Z) AT 11000 MWD /MTU PAGE 13 Of 14 l l

. . - . . . . . =_.. - - - - . _ . - - - - - - . . - - - - - . _ . - .

)

Amal Elevanon EOL i Point (feet) Wizl 1 12.00 1.0000

. 6g 3

.  ; 33,30 3,0000 1 3 11.60 1.0000 1

! 4 11.40 1.0000 5 11.20 1.0000 ,

6 11.00 1.0000  ;

7 10.80 1.0000 t 8 10.60 1.0000 1.5C

  • e 10.40 1.0000 10 10.20 1.0000 11 10.00 1.1783 12 9.80 1.1757 13 9.60 1.1772 14 9.40 1.1842 15 9.20 1.1869

. 16 0.00 1.1902

. 4C 17 8.80 1.2023 18 8.60 1.2216 19 8.40 1.2391 .

20 8.20 1.2540 i i 21 8.00 1.2701 22 7.80 1.2848 ,

. 23 7.60 1.2948 i 2 4 7A0 1R12

    • 3C r3 25 7.20 1.3039 i N o & A 26 7.00 1.3032 g & & n 27 6.50 1.2994

'. b A o A 28 6.60 1.2927 V V g 29 30 6.40 6.20 1.2834 1.2719 A .

31 6.00 1.2571 1.2C i 32 5.50 1.2443 4 33 5.60 1.2383 6 34 5.40 1.2374 35 5.20 1.2435 36 5.00 1.2502 37 4.50 1.2560 38 4.60 1.2617 39 4.40 1.2648 1.10 40 4.20 1.2655 1 41 4.00 1.2638 l 42 3.80 1.2599

[ 43 3.60 1.2536 44 3.40 1.2454 45 3.20 1.2407 46 3.00 1.2365 47 2.80 1.2390 1.00 48 2.60 1.2504 0 2 4 6 8 10 12 49 2.40 1.2613 50 2.20 1.2720

, 51 2.00 1.2828 52 1.80 1.0000

53 1.60 1.0000 l CORE HEIGHT (feet) f3 jj l

56 1.00 1.0000 57 0.80 1.0000 58 0.60 1.0000 This figure is referred to by Te&nical 59 0.40 1.0000

( Speafcaten B3.2.1 60 0.20 1.0000 61 0.00 1.0000

!

  • Top and Bottom 15% Excluded per Technical Speofcation B3.2.1 f FIGURE 9 RAOC W(Z) AT 19000 MWD /MTU PAGE 14 Of 14

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