ML20072F278

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Rev 1 to Vogtle Electric Generating Plant Unit 2 Cycle 4 Core Operating Limits Rept
ML20072F278
Person / Time
Site: Vogtle Southern Nuclear icon.png
Issue date: 08/31/1994
From:
GEORGIA POWER CO.
To:
Shared Package
ML20072E935 List:
References
NUDOCS 9408230273
Download: ML20072F278 (14)
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Text

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O V0GTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 2 CYCLE 4 CORE OPERATING LIMITS REPORT AUGUST 1994 REVISION 1 O

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9408230273 940012 PDR ADOCK 05000425 R PDR u.

, i l

1 0 1 Vogtle Electric Generating Plant Unit I and Unit 2 l

l Core Operating Limits Report Unit 2 Cycle 4 Revision 1 August 1994 Revision Insertion Instructions Item Instructions Active COLR List Replace Unit 2 Report Replace and Title Page O

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(

l 4

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,- COLR for VEGP UNIT 2 CYCLE 4 l

1 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for VEGP UNIT 2 CYCLE 4 has been prepared in accordance with the requirements of Technical Specification 6.8.1.6.

The Technical Specifications affected by this report are listed below:

3/4.1.1.1 SHUTDOWN MARGIN - MODES 1 and 2 3/4.1.1.2 SHUTDOWN MARGIN - MODES 3, 4 and 5 3/4.1.1.3 Moderator Temperature Coefficient 3/4.1.3.5 Shutdown Rod Insertion Limit 3/4.1.3.6 Control Rod Insertion Limits 3/4.2.1 Axial Flux Difference

(] 3/4.2.2 Heat Flux Hat Channel Factor - Fo (Z)

V 3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor - F6 U(3 REV 1 PAGE 1 of 12

4 COLR for VEGP UNIT 2 CYCLE 4 d

2.0 OPERATING LIM'TS 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 6.8.1.6.

2.1 SHUTDOWN MARGIN - MODES 1 AND 2 (Specification 3/4.1.1.1) 2.1.1 The SHUTDOWN MARGIN shall be greater than or equal to 1.3% Ak/k.

2.2 SHUTDOWN MARGIN - MODES 3, 4 AND 5 (Specification 3/4.1.1.2) 2.2.1 The SHUTDOWN MARGIN shall be greater than or equal to the iimits shown in Figures 1 and 2.

2.3 Moderator Temperature Coefficient (Specification 3/4.1.1.3) 4 2.3.1 The Moderator Temperature Coefficient (MTC) limits are:

The BOL/AR0/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.

f~

b) The E0L/AR0/RTP-MTC shall be less negative than -5.5 x 10-*

Ak/ k/*F .

  • 2.3.2 The MTC Surveillance limit is:

The 300 ppm /AR0/RTP-MTC should be less negative than or equal to

-4.?F x 10-' Ak/k/*F.*

where- 00L 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 Rod Insertion Limit (Specification 3/4.1.3.5) 2.4.1 The shutdown rods shall be withdrawn to a position greater than or equal to 225 steps.

2.5 Contal Rod Insertion limits (Specification 3/4.1.3.6)  ;

2.5.1 The control rod banks shall be liraited in physical insertion as I shown in Figure 3.

O]

\'~

  • Applicable over full-power T-averaga range of 584.4 F through 588.4*,

inclusive .

REV 1 PAGE 2 0F 12

," i i

i COLR for VEGP UNIT 2 CYCLE 4 l

V 2.6 Axial Flux Difference (Specification 3/4.2.1)

(RAOC methodology) 2.6.1 The Axial flux Difference (AFD) Acceptable Operation Limits are provided in Figure 4.

2.7 Heat Flux Hot Channel Factor - F,(Z) (Specification 3/4.2.2)

{F, methodology}

F,RTP 2.7.1 Fe(Z) s

  • K(Z) for P > 0.5 P

F,RTP F,(Z) s

  • K(Z) for P s 0.5

0.5 where

P = THERMAL POWER RATED THERMAL POWER 2.7.2 F,RTP - 2.50 2.7.3 K(Z) is provided in Figure 5.

2.7.4 F[(Z) s for P > 0.5 P

  • W(Z)

F[(Z) s for P s 0.5 0.5

  • W(Z) 2.7.5 W(Z) values are provided in Figures 6 through 8.

O V

REV 1 PAGE 3 of 12

9 l

COLR for VEGP UNIT 2 CYCLE 4

\ \

%J 2.8 Nuclear Enthaloy Rise Hot Channel Factor - FR (Specification 3/4.2.3) l i

2.8.1 FR s F,RTP* (1 + pp,,, * (1_p))

l where: P - THERMAL POWER i RATED THERMAL POWER l 1

l 2.8.2a F,RTP - 1.53 for LOPAR fuel, and l 2.8.2b F RTP -

1.65 for VANTAGE 5 fuel 2.8.3 P F., =

0.3 for LOPAR and VANTAGE 5 fuel s

O Li\mp\sogtte\COLR.U2 REV 1 PAGE 4 of 12

~

l COLR for VEGP UNIT 2 CYCLE 4 c) 5.00

$ 4.00

$C ACCEPTABLE OPERATING S

f REGION Z

3 00 2

{ (1600,2.25) 2.00 in

@ UNACCEPTABLE G s OPERATING D (950,1.30) REGION 1.00 0.00 0 500 1000 1500 2000 2500 2175 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)

G V

REV 1 PAGE 5 of 12

l

. l

.. 1 l

, COLR for VEGP UNIT 2 CYCLE 4 C-5.00 (2500,4.90)

$ 4.00 -

< ACCEPTABLE E OPERATING

@ REGION a

E 5 3.00

/

m (1250,2.85)

2 z

3 f)s y

<n 2.00

@ UNACCEPTABLE c OPERATING g j REGION IE (460,1.00) 0.00 0 500 1000 1500 2000 2500 21751 RCS BORON CONCENTRATION (ppm)

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

O REV 1 PAGE 6 of 12

,- l COLR for VEGP UNIT 2 CYCLE 4 (Fully Withdrawn *)

20 4 28.0 %,225) #

/ / (78.0%,225)-

/ /

[BANKB [

} J ?

_ /

T 160 (100%,161) 8 / /

h 140 E [ BANK C [

E z 120 g

/ g

/

9 J }

100 q' / /

k 8

$ [ [ BANK D 60

/ /

f(0%,46)

/

/

20

/

(30.2%,0)[

0 0 P^ 40 60 80 100 (Fully inserted)

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 withdrawn.

FIGURE 3 ROD BANK INSERTION LIMITS VERSUS THERMAL POWER

( )

'J REV 1 PAGE 7 of 12

4 g- COLR for VEGP UNIT 2 CYCLE 4

(_S) 140 120 e (-20,100) (+10,100)

$ 100 S UNACCEPTABLE UNACCEPTABLE a \

E o

5 80

!o

/ \ '

(G

') E o 60 ACCEPTABLE i / \

[E (-35, 50) (+26, 50) 3:

o 40 20 1

0  !

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

FIGURE 4 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER

[-

'a} FOR RAOC REV 1 PAGE 8 of 12

g COLR for VEGP UNIT 2 CYCLE 4

'% )

1.40 1.20 0

0 I 1.00 9

2 W 0.80 8

u 0.60 v g Fo = 2.50 Z CORE 1 0.40 HEIGHT K(Z)

$ 0.000 6.000 1.000 1.000 12.000 0.925 0.20 0

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

'I FIGURE 5 l

O K(Z) - NORMALIZED FO (Z) AS A FUNCTION OF CORE HEIGHT 1

REV 1 PAGE 9 of 12 l

l l

COLR for VEGP UNIT 2 CYCLE 4 V

1.5

! Axial Elevation IOK l'oint (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 6 11.00 1.0000 1.4 7 10.80 1.0000 8 10.60 1.0000 9 10.40 1.0000 10 10.20 1.0000 11 10.00 13238 12 9.80 13161 13 9.60 13066 14 9.40 1.2966 o 15 9.20 1.2810

" 9.0 1.2613 1.3 16 m 17 8.80 1.2558 a,

.--- 18 8.60 1.2646 u" o 19 8.40 1.2692 m " "

N -- 20 8.20 1.2755

  • ' 21 8.00 1.2791 g

22 7.80 1.2786 W "*'"

"n a 23 7.60 1.2753 24 7.40 1.2695 o 25 7.20 1.2616 1.2 , 26 7.00 1.2517

, 27 6.80 1.2410 28 6.60 1.2313 29 6.40 1.2212 O' 30 31 6.20 6.00 1.2096 1.1961 32 5.80 1.1845 33 5.60 1.1825 34 5.40 1.1927 1.1 35 5.20 1.2037 36 5.00 1.2135 37 4.80 1.2220 38 4.60 1.2286 39 4.40 1.2335 40 4.20 1.2365 41 4.00 1.2376 42 3.80 1.2370 43 3.60 1.2363 44 3,40 1.2364 0 1 2 3 4 5 6 7 8 9 10 11 12 $ 3$ l$3j 47 2 1.2307 CORE HEIGHT (Feet) 48 2:80 60 1.2642 49 2.40 1.2775 50 2.20 1.2903 FIGURE 6 51 2.00 13027 52 1.80 1.0000 RAOC W(z) at 10000 MWD /MTU 53 m 1.wm 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 54 0.40 1.0000
  • 60 0.20 1.0000 l 61 0.00 1.0000 i This figure is referred to by Technical J Specifications 4 2.2.2d. B3/4.2.2
  • Top and 110ttom 15% Excluded L Data applicable over a temperature per Technical Specification )

Range of 584 4 to 588.4 F. 4.2.2.2 l REV 1 PAGE 10 of 12 i

4 COLR for VEGP UNIT 2 CYCLE 4 1.5 Axial Elevation 12K i 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 6 11.00 1.0000 1.4

  • 7 10.80 1.0000 8 10.60 1.0000 9 10.40 1.0000 10 10.20 1.0000 11 10.00 13297

__ I?. 9.80 13216 1.4 9.60 13129 14 9.40 13035 n 1!. 9.20 1.2891 1.3 It 9.00 1.2721 w, a l') 8.80 1.2693 m 18 8.60 1.2799 N " o a, 19 8.40 1.2857 h n " "..

o

" 20 21 22 8.20 8.00 7.80 1.2917 1.2942 1.2925

" " n.. "

o o 23 7.60 1.2885 a ,, 24 7.40 1.2819 o

n 25 7.20 1.2729 I2 26 7.00 1.2654 27 6.80 1.2584 28 6.60 1.2499 29 6.40 1.2408 30 6.20 1.2302 31 6.00 1.2175 32 5.80 1.2060 i 33 5.60 12020 34 5.40 1.2085 j,j 35 5.20 1.2183 36 5.00 1.2274 37 4.80 1.2349 38 4.60 1.2405 39 4.40 1.2440 40 4.20 1.2455 41 4.00 1.2448 42 3.80 1.2426 43 3.60 1.2404 44 3.40 1.2387 2 20 1 36 0 1 3 4 5 6 7 8 9 10 11 12 $ [m 47 2.80 1.2475 CORE HEIGHT (Feet) 48 2.60 1.2609 49 2.40 1.2745 50 2.20 1.2875 FIGURE 7 51 2.00 13002 52 1.80 1.0000 53 2 60 1**

RAOC W(z) at 12000 MWD /MTU

  • M 1.40 1.0000 55 1.20 1.0000 56 1.00 1.0000 57 0.80 1.0000 3

58 C.60 1.0000 59 0.40 1.0000 60 0.20 1.0000'

+

This figur0 is referred to by Technical 0.m 1.mm

. Specifications 4.2.2.2d. B3/4.2.2 .

Top and Bottom 15% Excluded Data applicable over a temperature per Technical Specification Range of 584.4 to 588.4 F. 4.2.2.2 REV 1 PAGE 11 of 12

m COLR for VEGP UNIT 2 CYCLE 4 l \

'w/ 1.5 Axial Elevation 14K 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 6 11.00 1.0000 7 10.80 1.0000 1.4

  • 8 10.60 1.0000 9 10.40 1.0000 10 10.20 1.0000 11 10.00 13379 12 9.80 13293 13 9.60 13217 14 9.40 13137 n " 15 9.20 13019 n 16 9.00 1.2902 17 8.80 1.2928 1.3 " 8.60 13075

% 18 o

"~~"- 19 8.40 13183

" n 20 8.20 13261 N " 21 8.00 13278

  • "on " " "

22 7.80 13241 n n" '

23 7.60 13171

,,o n no 24 7.40 13074 25 7.20 1.2956 26 7.m 1.2838 1.2 27 6.80 1.2781 28 6.60 1.2710 29 6.40 1.2634 30 6.20 1.2543 g

, 31 6.00 1.2432

(, 32 33 5.80 5.60 1.2319 1.2249 34 5.40 1.2265 35 5.20 1.2347 1.1 36 5.00 1.2433 37 4.80 1.2499 38 4.60 1.2543 39 4.40 1.2565 40 4.20 1.2564 41 4.00 1.2539

~~~

42 3.80 13499 43 3.60 1.2462 44 3.40 1.2423 45 3.20 1.2350 46 3.00 1.2352 0 1 2 3 4 5 6 7 8 9 10 11 12 47 2.80 1.2451 CORE HEIGHT (Feet) 3 50 i'

2.20

'j5;2 1.2877 FIGURE 8 51 2.00 13013 52 1.80 1.0000 53 1.60 1.0

  • o RAOC W(z) at 14000 MWD /MTU
  • 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 59 0.40 1.0000 60 0.20 1.0000 61 0m 1m This figure is referred to by Technical Specifications 4.2.2.2d. 83/4.2.2
  • Topand Bottom 15% Escluded per Technical Specification p) Data

( apphcable Range overF.a temperature of 584.4 to 588.4 4.2.2.2 v

REV 1 PAGE 12 of 12

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