ML20078D266

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COLR for Vogtle Electric Generating Plant Unit 1 Cycle 6
ML20078D266
Person / Time
Site: Vogtle Southern Nuclear icon.png
Issue date: 09/30/1994
From:
GEORGIA POWER CO.
To:
Shared Package
ML20076L593 List:
References
NUDOCS 9411030363
Download: ML20078D266 (16)
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Text

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l Vogtle Electric Generating Plant Unit I and Unit 2 Core Operating Limits Report-Unit 1 Cycle 6 -

September 1994 j h

r Revision Insertion Instructions l 1191B Instructions l Active COLR List Replace Unit 1 Report Replace and Title Page P

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9411030't: v41o2s PDR ADDCK 05000424 P PDR

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! Vogtle Electric Generating Plant Unit I and Unit 2 Active Core Operating Limits Report List. l

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September 1994 j

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! Unit 1 Cycle 6- September 1994.

Unit 2 Cycle 4, Revision 1 August 1994 4

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1 V0GTLE ELECTRIC GENERATING' PLANT (VEGP) UNIT 1 CYCLE 6 ,

.i CORE OPERATING LIMITS REPORT-  ;

SEPTEMBER-1994  ?

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COLR'for VEGP UNIT 1 CYCLE 6 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for VEGP UNIT 1 CYCLE 6 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 Hot Channel Factor - F,(Z) 3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor - F1 4

PAGE 1 of 13

COLR for VEGP UNIT 1 CYCLE 6 l

l l 2.0 0PERATING LIMITS i

l 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 percent & /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 limits I

shown in figures 1 and 2.

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

The 80L/AR0/ HIP - MTC shall be less positive than +0.7 x 10-' &/k/*F l for power levels up to 70 percent RTP with a linear ramp to 0 &/k/*F at 100 percent RTP.

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

-5.50 x 10-* M/k/*F.*

2.3.2 The MTC Surveillance limit is:

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

where: BOL stands for Beginning of Cycle Life l ARO stands for All Rods Out l HZP stands for Hot Zero THERMAL POWER l

E0L stands for End of Cycle Life l

RTP stands for RATED THERMAL POWER 2.4 Shutdown Rod Insertion Limit (Specification 3/4.1.3.5) 2.4.1 The shutdcwn rods shall be withdrawn to a position greater than or equal to 225 steps.

2.5 Control Rod Insertion Limits (Specification 3/4.1.3.6) 2.5.1 The control rod banks shall be limited in physical insertion as shown in figure 3.

  • Based on full-power T-average in the range of 584.4 to 588.4*F, inclusive.

PAGE 2 of 13

COLR for VEGP UNIT 1 CYCLE 6 2.6 Axial Flux Difference (Specification 3/4.2.1)

{ relaxed axial offset control' (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} ]

RTP 2.7.1 F,(Z) s

  • K(Z) for P > 0.5 P

RTP Fo(Z) s

  • K(Z) for P s 0.5

0.5 where

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

C RTP 2.7.4 Fa (Z) s F.

  • K(Z) for P > 0.5 P
  • W(Z)

C RTP F (Z) s E,

  • KfZ) for P s 0.5 0.5
  • W(Z) 2.7.5 W(Z) values are provided in figures 6 through 8.

PAGE 3 of 13

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i j COLR for VEGP UNIT 1 CYCLE 6

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2.7.6 The F (Z) penalty factors are provided in table 1. j 4 ,

2.8 Nuclear 2 Salov Rise Hot Channel Factor - FE (Specification 3/4.2.3) ,

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3 1

i RTP j 2.8.1 F6 s Fw * (1 + PF.,, * (1-P)) .

1

- where: P - THERMAL POWER l

RATED THERMAL POWER 4

.y 4

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

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i RTP

i. 2.8.2b Fu - 1.65 for VANTAGE 5 fuel 1

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J j 2.8.3 P F,,, - 0.3 for LOPAR and VANTAGE 5 fuel ,

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PAGE 4 of 13 l

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COLR FOR VEGP UNIT 1 CYCLE 6 5.00 l

l

{ 4.00 ACCEPTABLE  !

- OPERATING REGION B

S (2500,3.1b z 3.00 s

j (1600,2.25) 0 2.00

$ l l

5 UNACCEPTABLE o s OPERATING tu (950,1.30) REGION o 1.00 l

J 0.00 0 500 1000 1500 2000 2F'O J 21711-1 RCS BORON CONCENTRATION (ppm)

FIGURE 1 Rr_ QUIRED SHUTDOWN MARGIN FOR i40 DES 3 AND 4 (MODE 4 WITH AT LEAST ONE REACTOR COOLANT PUMP RUNNING)

PAGE 5 of 13

COLR FOR VEGP UNIT 1 CYCLE 6 I

~

(2500,4.90) 4 i

i

$ 4.00 l

<l ACCEPTABLE E OPERATING

@ REGION o

2 5 3.00 (1250,2.85) cc z

3l:

O y 2.00 5

@ UNACCEPTABLE cc OPERATING REGION g j

$' (460,1.00) l l

0.00 0 500 1000 1500 2000 2500 217 M RCS BORON CONCENTRATION (ppm)

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

PAGE 6 of 13

COLR FOR VEGP UNIT 1 CYCLE 6 (Fully Withdrawn *)

28.0 %,225) (78.0%,225)-

/ /

[ BANK B [

180 I ' U '

(100 %,161) 160 8 / /

1 / /

{5 [ BANK C [

/ /

8' [ /

k / /

8' 5 /

/

/

/

$ [ [ BANK D 8 [ [

/ /

f(0%,46) [

/

20

/

( .2a/., Of 0

0 20 40 60 80 100 (Fully Inserted) *""

POWER (percent of 3565 MWt)

  • Fully withdrawn shall be the condition where control rods are at a position within the interval 2225 and s231 steps withdrawn.

FIGURE 3 ROD BANK INSERTION LIMITS VERSUS THERMAL POWER PAGE 7 of 13

COLR FOR VEGP UNIT 1 CYCLE 6 .

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120 I

100 UNACCEPTABLE UNACCEPTABLE j i

g 80 / \

2 ,

L S

o f ACCEPTABLE l

@ 60 } l i: l 2 [ \

g (-35,50) (+26, 50)

! 40 e

O u; '

T m 20 50 -40 -30 -20 -10 0 10 20 30 40 50 AXIALFLUX DIFFERENCE (percent Al)

FIGURE 4 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER FOR RAOC PAGE 8 of 13

1 COLR FOR VEGP UNIT 1 CYCLE 6 1.20 1.00 b

I 0.80 9

2 m

' O.60 a

m a

$ 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)- NORMALIZEDgF (Z) AS A FUNCTION OF CORE HEIGHT PAGE 9 of 13

COLR FOR VEGP UNIT 1 CYCLE 6 Axial Elevation BOL 1*60 Point feet) W(r) 1 2 00 1.0000 2 11.80 1.0000 3 11.60 1.0000

+

4 11.40 1.0000 5 1120 1.0000

  • 6 11.00 1.0000 1.50
  • 7 10.80 1.0000 8 10.60 1.0000
  • 9 10.40 1.0000 10 10.20 1.0000 a 11 10.00 1.1795 12 9.80 1.1909 A 13 9.60 1.1953 14 9.40 1.1991 1.40 A 15 9.20 1.2011 16 9.00 1.2054 A 17 8.80 1.2159 18 8.60 12258 A 19 8.40 1.2343 20 8.20 1.2392 a 21 8.00 1.2468 1*30 "

22 7.80 12527 23 7.60 12555

_. 24 7.40 12559 N n 25 7.20 1.2539 g A A A C

A

' 26 27 7.00 6.80 1.2497 1.2441 A A 28 6.60 1.2371 A A 29 6.40 1.2288 A 3 "

1.20 a J. 30 6.20 1.2191 A T 31 6.00 1.2094 k n 32 5.80 1.2000 33 5.60 1.1882 34 5.40 1.1762 35 5.20 1.1818 36 5.00 1.1965 37 4.80 1.2118 1.10 38 4.60 1.2272 39 4.40 1.2412 40 4.20 1.2536 41 4.00 1.2646 42 3.80 1.2738 43 3.60 12818 44 3.40 12895 1.00 45 3.20 12989 46 3.00 13152 0 2 4 6 8 10 12 47 2.80 13393 48 2.60 13669 49 2.40 13932 CORE HEIGHT (feet) 50 2.20 1.4187 51 2.00 1.4437 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 6 -

57 0.80 1.0000 58 0.60 1.0000 59 0.40 1.0000 RAOC W(Z) AT 150 MWD /MTU

  • 60 0.20 1.0000 61 0.00 1.0000 Top and Bottom 15% Excluded per This figure is referred to by Technical Specifications 4.2.2.2d, B3/4.2.2 PAGE 10 of 13 21 4 1

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

4 COLR FOR VEGP UNIT 1 CYCLE 6 l

1.60 Axial Elevation MOL

  • I O

2 11.80 1.0000 l 3 11.60 1.0000 i 4 11.40 1.0000 I 5 11.20 1.0000 l 1.50

  • 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 1.2673 12- 9.80 1.2727 1.4C 13 9.60 - 12778 14 9.40 1.2800 15 9.20 12820 16 9.00 1.2803 17 8.80 12770 18 8.60 1.2732 -

19 8.40 1.2654 20 8.20 1.2564 1.30 21 8.00 12507 1 I

22 7.80 1.2536 a

A J a

23 7.60 12602 8 g g dg .

L 24 25 7.40 7.20 1.2623 1.2613 A

3:

4N A A

26 27 7.00 6.80 1.2575 12509 i

g, 28 6.60 1.2417 l 1.20 29 6.40 1.2304  ;

-A f 30 31 6.20 6.00 1.2173 12017 32 5.80 1.1869 33 5.60 1.1817 34 5.40 1.1910 35 5.20 1.2010 36 5.00 1.2094 l

1.10 37 4.80 . 1.2165 38 4.60 12219 ,

l- 39 4.40 1.2258 l 40 4.20 12280 41 4.00 12287 42 3.80 12274 43 3.60 1.2269

! 1.00 44 3.40 12306 4

l 0 2 4 6 8 10 12 [ 3 ]' j 7 47 2.80 12365 CORE HEIGHT (feet) 48 2.60 12475 l 49 2.40 12585 50 2.20 1.2692 51 2.00 12795 52 1.80 1.0000 -

53 1.60 1.0000 54 1.40 1.0000 55 120 1.0000 FIGURE 7 58 o$

0.60

$1.0000 '

RAOC W(Z) AT 9000 MWD /MTU 59 0.40 1.0000 60 0.20 1.0000 l_ 61 0.00 1.0000 Top and Bottom 15% Excluded per This figure is referred to by Technical Speci6 cations 4.2.2.2d, B3/4.2.2 Technical Specification 4.2.2.2 PAGE 11 of 13 2175 1

COLR FOR VEGP UNIT 1 CYCLE 6 Axial Elevation EOL 2 11.80 1.0000 l 3 11.60 1.0000 4 11.40 1.0000 5 1120 1.0000 1.50

  • 6 11.00 1.0000 7 10.80 1.0000 8 10.60 1.0000 9 10.40 1.0000 i 10 10.20 1.0000 1 11 10.00 1.1845 12 9.80 1.1837 13 9.60 1.1844 1.40 14 9.40 1.1866 15 9.20 1.1938 16 9.00 1.2057 17 8.80 1.2169 18 8.60 1.2272 19 8.40 1.2419 20 8.20 12609 1.30 #

N_A 21 22 8.00 7.80 1.2777 1.2906 -

a n I 13003

^

N A

A 4

4 pM A a A

23 24 7.60 7.40 13067 g isa a A 25 26 7.20 7.00 13098 13099 i

l A 27 6.80 13070 A 28 6.60 13028

" 29 6.40 1.2988

1. 2 C' A h 30 6.20 1.2937 31 6.00 1.2868 32 5.80 1.2767 33 5.60 12664 34 5.40 1.2636 35 5.20 1.2681 36 5.00 1.2717 1.10 37 4.80 1.2740 38 4.60 1.2765 39 4.40 12761 40 4.20 1.2729 41 4.00 1.2687 42 3.80 1.2631 43 3.60 1.2558 44 3.40 1.2465 1 00 0 2 4 6 8 10 12 h l:20 ]

47 2.80 1.2451 CORE HEIGHT (feet) $ 2;g jg2g 50 2.20 1.2758 51 2.00 1.2867 52 1.80 1.0000 53 1.60 1.0000 54 1.40 1.0000 55 1.20 1.0000 FIGURE 8

  • 56 1.00 1.0000 57 0.80 1.0000 RAOC W(Z) AT 17000 MWD /MTU y 8;$ };E 60 0.20 1.0000 61 0.00 1.0000
  • Top and Bottom 15% Excluded per This figure is referred to by Technical Specif ications 4.2.2.2d, B3/4.2.2 Technical Specification 4.22.2 PAGE 12 of 13 217M

c J

COLR for VEGP UNIT 1 CYCLE 6 TABLE 1 Fl(Z) PENALTY FACTOR Cycle Fl(Z).

Burnup Penalty (MWD /MTU) Factor 0 1.0357 150 1.0357 362 1.0340 574 1.0353 786- 1.0342 998 1.0311 1210 1.0280 1422 1.0226 1634 1.0200 Notes:

1. . The Penalty Factor, to be applied to~ Fl(Z) in accordance with surveillance requirement 4.2.2.2.f, is the maximum factor by which Fl(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 Technical Specification 4.0.2) starting from the burnup at which the Fj(Z) was determined.
2. Linear interpolation is adequate for intermediate cycle burnups.
3. For All cycle burnups outside the range of the table, a penalty factor I of 1.0200 shall be used.  :

. PAGE 13 of 13

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