ML20134A037

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VEGP Unit 1 Cycle 7 COLR, Rev 1
ML20134A037
Person / Time
Site: Vogtle Southern Nuclear icon.png
Issue date: 01/22/1997
From:
GEORGIA POWER CO.
To:
Shared Package
ML20134A031 List:
References
NUDOCS 9701280146
Download: ML20134A037 (15)
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! V0GTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 1 CYCLE 7 CORE OPERATING LIMITS REPORT REVISION 1 JANUARY 1997 i

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9701280146 970122 PDR ADOCK 05000424-P PDR.G

COLR for VEGP UNIT 1 CYCLE 7 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for VEGP UNIT 1 CYCLE 7 has been prepared in accordance with the requirements of Technical Specification 5.6.5.

1 The Technical Requirement affected by this report is listed below:

13.1.1 SHUTDOWN MARGIN - MODES I and 2 l I

The Technical Specifications affected by this report are listed below: i 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 - F N,,

3.2.3 Axial Flux Difference 3.9.1 Boron Concentration l

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PAGE 1 of 14 i

?

COLR for VEGP UNIT 1 CYCLE 7

I

! 2.0 OPERATING LIMITS 1

The cycle-specific parameter limits for the specifications listed in ser. tion 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) I The SHUTDOWN MARGIN shall be greater than or equal to I

2.1.1 1.3 percent & /k.  !

I 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) l 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 percent RTP with a linear ramp to 0 &/k/*F at 100 percent RTP.

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

-5.50 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 l equal to -4.75 x 10-' M/k/*F.*

The 60 ppm /'ARO/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 E0L stands for End of Cycle Life RTP stands for RATED THERMAL POWER 2.4 Dutdown 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.

  • Based on full-power T-average of 586.4*F.

PAGE 2 of 14 '

1 COLR for VEGP UNIT 1 CYCLE 7 1

2.6 Heat Flux Hot Channel Factor - F o (Z) (Specification 3.2.1) i RTP 2.6.1 Fo (Z) s

  • K(Z) for P > 0.5
P RTP Fo (Z) s
  • K(Z) for P s 0.5 l 0.5-where: P = THERMAL POWER RATED THERMAL POWER RTP 2.6.2 Fo - 2.50 2.6.3 K(Z) is provided in figure 5.

RTP 2.6.4 Fo (Z) s E.

  • K(Z) for P > 0.5 P
  • W(Z)

RTP Fo (Z) s F,

  • K(Z) 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 Fo(Z) penalty factors are provided in table 1.

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PAGE 3 of 14 ,

o

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

1 COLR for VEGP UNIT 1 CYCLE 7 l

2.7 Nuclear Enthalov Rise Hot Channel Factor - FR (Specification 3.2.2) i RTP 2.7.1 FN s F ,, * (1 + PF,,, * (1-P))

i where: P - THERMAL POWER RATED THERMAL POWER ,

l j RTP

2.7.2a F ,,, = 1.53 for LOPAR fuel and I

i RTP l 2.7.2b F ,,, - 1.65 for VANTAGE 5 fuel  ;

2.7.3 P F ,, = 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) 1 l

2.9.1 The boron concentration shall be greater than or equal to 2096 ppm.'

  1. This concentration bounds the condition of k,,, s 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 B

depletion.

PAGE 4 of 14 l

COLR for VEGP UNIT 1 CYCLE 7 TABLE 1 F,(Z) PENALTY FACTOR Cycle F,(Z)

Burnup Penalty (MWD /MTV) Factor 360 1.021 1408 1.021 3085 1.024 3295 1.030 3924 1.033 4344 1.031 4973 1.026 5392 1.024 6021 1.023 6650 1.022 7069 1.021 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 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 l 1

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 1.0200 shall be used. l l

PAGE 5 of 14

COLR FOR VEGP UNIT 1 CYCLE 7

5.00

'.' 4.00 ACCEPTABLE OPERATING

{

y REGION E

U

8. 3.00 REQUIRED E SHUTDOWN g MARGIN /

, E (1600,2.25) 2 #

y 2.00 8

$ UNACCEPTABLE I s OPERATING

  • (950,1.30) REGION j 1.00  :

1 0.00 2500 0 500 1000 1500 2000 mu (

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

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COLR FOR VEGP UNIT 1 CYCLE 7 5.00 (2500,4.90) 2 4.00

- ACCEPTABLE j OPERATING

< REGION E

b g 3.00 4

- (1250,2.85)

E REQUIRED

@ SHUTDOWN

< MARGIN 3: 2.00 8

H \

UNACCEPTABLE

@ OPERATING i co REGION l j

(460,1.00) 1 0.00 0 500 1000 1500 2000 2500 21751 RCS BORON CONCENTRATION (ppm) i FIGURE 2 REQUIRED SHUTDOWN MARGIN FOR MODES 4 AND 5 (MODE 4 WITH NO REACTOR COOLANT PUMPS RUNNING)

PAGE 7 of 14 4

COLR FOR VEGP UNIT 1 CYCLE 7 (Fully Withdrawn *)

ffh 28.0 %,225) (78.0%, 225)-

/ / .

[ BANK B [

180

[

f I 160

%,161) [ '

(100%,161) g / /

1 / /

E [ BANK C [

i / /

5' / /

5 / /

2' / /

I / /

$ [ [ BANK D 8

  • / /

/ /

40 f(0%,46) [

20

/

(30.2%,0)[

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

  • Fully withdrawn shall be the condition where control rods are at a position within the interval 2225 and 5231 steps wahdrawn.

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 RATED THERMAL POWER PAGE 8 of 14

COLR FOR VEGP UNIT 1 CYCLE 7 120

- . (+ .100) 100 UNACCEPTABLE UNACCEPTABLE

!a 80 / \

1 / \

3 ACCEPTABLE y 60

E ( 35,50)

\

(+26, 50) b 40 5

a k

20

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

FIGURE 4 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER FOR RAOC PAGE 9 of 14

COLR FOR VEGP UNIT 1 CYCLE 7 I 1.20 l

1.00 ,

b b

I 0.80 e

le a 0.60 w

2 8 0.40 Z

Fa = 2.50

^

N CORE E 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)

FIGURE 5 K(Z)- NORMAllZED Fo(Z) AS A FUNCTION OF CORE HEIGHT PAGE 10 of 14

COLR FOR VEGP UNIT 1 CYCLE 7 Anal Elevanon BOL Point (feet) W(z) 1 12.00 1.0000 1.60 4

  • 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 I

8 10.60 1.0000 1*5C

  • 9 10.40 1.0000 10 10.20 1.0000 11 10.00 1.2462 12 9.80 1.2334 13 9 60 1.2269 14 9.40 1.2183 15 9 20 1.2096 16 9.00 1.1967 1.4C 17 8.80 1.1%3 g 18 8.60 1.2108 19 8.40 1.2202 A 20 8.20 1.2303

' 21 8.00 1.2383 l  ! 22 7.80 1.2427 A 23 7.60 1.2448 1.30

$ 24 25 7.40 7.20 1.2442 1.2414 3 26 7.00 1.2366 p

- "4 27 6.80 1.2298 g 28 6.60 1.2219 3 g. i n 29 6.40 1.2141 g

A jb g j 30 6.20 1.2050

^ A a 31 6.00 1.1950 1.2C i f AA 32 5.80 1.1835 o as 33 5.60 1.1774 A

f 34 35 5.40 5.20 1.1861 1.2007 i 36 5.00 1.2148 37 4.80 1.2289 38 4.60 1.2433 39 4.40 1.2564 40 4.20 1.2680 1*1C 41 4.00 1.2783 42 3 80 1.2872 43 3.60 1.2944

' 44 3.40 13001 l

45 3.20 13072 i 46 3.00 13163 l 47 2.80 13280 1.00 48 2.60 1.3432 0 2 4 6 8 10 12 49 2.40 13620 .

50 2.20 13829 CORE HEIGHT (feet)

  • 51 52 2.00 1.80 1.4038 1.0000 l

1

  • 1 53 1.60 1.0000 54 1.40 1.0000 I 55 i.20 1.0000 56 1.09 1.0000 57 0.80 1.0000 58 0.60 1.0000 l FIGURE 6 -

59 0 40 1.0000 60 0.20 1.0000 61 0.00 1.0000 RAOC W(Z) AT 150 i .0/MTU

)

COLR FOR VEGP UNIT 1 CYCLE 7 Axial Elevation MOL 1 Pomt (fe o wg,)

, 1 12 00

. 60 , 1.0000 2 11.80

< , 1.0000 3 11.60

, 1.0000 4

5 11.40 1m

, 11.20 1.0000 6 11,00 1.0000 7 10.80 1.0000 1.5C .

l 10.60 10.40 1.0000 1.0000 10 1030 1.0000 11 10.00 13323 12 9 80 13115 13 9.60 1.2919 14 9.40 1.2756 15 9.20 1.2534 16 9D0 1.2364 1.40 17 8.80 1,2341 a 18 8.60 1.2404 19 8 40 1.2434 g 20 8.20 1.2494 21 8.00 1.2534

& 22 7.80 45 l 1.2538 23 7.60 1.2518 A

, A 24 7.40 1.2472 13C a g 25 7.20 1.2404 26 7.00 1.2318 A 27 6.80 1.2213 G

-- n am 4 28 6.60 1.2097 a 29 6.40 1.1985 3:

'g a f L 30 6.20 1.1856 A 31 6.00 1.1763 A A, 32 5.80 1.1681 1*2C g aa

~

33 5.60 1.1652 34 5.40 1.1769 g

g 35 36 5.20 5.00 1.1894 1.2014 37 4.80 1.2139 38 4.60 1.2258 39 4.40 1.2366 O 4.20 1.2460 1*1C 41 4.00 1.2552 42 3.80 1.2637 43 3.60 1.2708 I 44 3.40 1.2773 l' 45 3.20 1.2861 46 3.00 1.2930

  • 47 2.80 13020 48 2.60 13185 l 1.00 49 2.0 13e9 0 2 4 6 8 10 '

'2 50 2.20 13627 51 2.00 13839 CORE HEIGHT (feet)

  • 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 0.80 1.0000 58 0.60 1.0000 FIGURE 7 $ $2 }.0000 l

RAOC W(Z) AT 4000 MWD /MTU

  • Top and Bottom 15% Excluded per l Technical Speoficaton B3.2.1 j This figure is referred to by Technical Specificaton B3.2.1 PAGE 12 Of 14 21 41

COLR FOR VEGP UNIT 1 CYCLE 7 Axial Elevanon MOL2 Point (feet) W(z) 1.60

  • 1 12.00 1.0000 2 11.80 1.0000 3 11.60 1.0000 4 11.40 1D000 5 11.20 1.0000 6 11.00 1.0000 7 10.80 1.0000 1.5C 8 10.60 1.0000 1
  • 4 10.40 1.0000 10 1010 1.0000 11 10D0 1.2506 12 9.80 1.2416 13 9.60 1.2393 14 9.40 1.2343 15 9.20 11239 1.4C '

16 9.00 12129 17 8.80 1.2103 18 8.60 1.2166 19 8.40 1.2249 20 8.20 11354 i 21 8.00 12435

' 22 7.80 1.2480 23 7.60 124%

1.3C 24 7.40 12483 a 23 7.20 1.2443 A 26 7.00 12379 N ' A 27 6.80 12292 .

28 6.60 1.2187 3

1N k Afi A g 29 6.40 1.2071 l

l 4 30 6.20 1.1952 T A b 31 6.00 1.1810 l

1.2C a a 32 5.80 1.1699 l A ^ 33 5.60 1.1699

" 34 5.40 1.1808 35 5.20 1.1923 36 5.00 1.2024 37 4.80 1.2113 38 4.60 1.2186 39 4.40 1.2245 1.10 40 4.20 12286 41 4.00 1 2312 42 3.80 1.2318 43 3.60 1.2316 44 3.40 12316 l 45 3.20 1.2333 46 3.00 1.2389 1.On 4' 2.80 1.2499 0 2 4 6 8 10 12 $ y d6jyy 50 20 CORE HEIGHT (feet)

  • 51 2:00 2 1:2902 1 3025 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 0.80 1.0000 FIGURE 8 58 0.60 1D000 59 0.40 1.0000 60 0.20 1.0000 RAOC W(Z) AT 11000 MWD /MTU ,

61 0.00 1.0000

COLR FOR VEGP UNIT 1 CYCLE 7 Anal Elevanon EOL Point (f**t) W(z) 1.60

  • 1 12.00 1.0000 2

3 nu i.oooo

, 11.60 1.0000 4 11.40

. 1.0000

  • 11.20 1.0000 6 11.00

. 1.0000 10E0 1.0000 1.50 8 10.60 1.0000 9 10 40

. 1.0000 10 10.20 1.0000 11 10.00 1.2023 12 9.80 1.2005 13 9.60 1.2013 14 9 40 1.2077 15 9.20 1.2133 1.4C 16 9.00 1.2167 17 8.80 1.2193 18 8.60 1.2226 19 8.40 1.22g7 20 8.20 1.2464 21 8.00 1.2620 22 7.80 1.2732 23 7.60 1.2816 1.3C 24 7.40 1.2869

, 25 7.20 1.2891 a 26 7.00 1.2886

^ A 27 6.80 N 1.2851 3

A. JN A a ^ 28 6.60 1.2802

% A- N.

  • 29 6.40 1.2759 4 L 30 6.20 1.2703

% 31 6.00 1.2635 1.2C i 32 5.80 1.2534 33 5.60 1.2450 34 5.40 1.2450 35 5.20 1.2497 36 5.00 1.2541 37 4.80 1.2579 38 4.60 1.2614 39 4.40 1.2623 1.10 40 4.20 1.2616 41 4.00 1.2600 42 3.80 1.2565 43 3.60 1.2509 44 3.40 1.2433 45 3.20 1.2322 46 3.00 1.2325 47 2.80 1.2408 1.00 48 2.60 1.2487 0 2 4 6 8 10 12 49 2.40 1.2595 50 2.20 1.2708 CORE HEIGHT (feet)

  • 51 2m 1.2821 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 0.80 1.0000 58 0.60 1.0000 FIGURE 9 -

59 0.40 1.0000

< 60 0.20 1.0000 RAOC W(Z) AT 19000 MWD /MTU 61 0.00 1.0000 I

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