ML20085N059

Cycle 4 Core Operating Limits Rept

ML20085N059
Person / Time
Site:	Vogtle
Issue date:	09/30/1991
From:	GEORGIA POWER CO.
To:
Shared Package
ML20085N057	List: ELV-03206, Forwards Vogtle Unit 1,Cycle 4 Core Operating Limits Rept. Revised Rept Became Effective Upon Entry Into Mode 5 Following Completion of Fuel Loading ML20085N059
References
NUDOCS 9111140032
Download: ML20085N059 (12)

Text

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O V0GTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 1 CYCLE 4 CORE OPERATING LIMITS REPORT SEPTEMBER 1991 O

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O 9111140032 911107 l PDR ADOCK 05000424 P PDR

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73 COLR for VEGP UNIT 1 CYCLE 4

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1.0 CORE OPERATING LIMITS REPORI This Core Operating Limits Report (COLR) for VEGP UNIT 1 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 Hot Channel f actor - F,(Z)

I 3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor - Fd

,3

,Y PAGE 1 of 12

5 ,

COLR for VEGP UNIT 1 CYCLE 4 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 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 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 limits shown in figures 1 and 2.

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

The BOL/AR0/HZP - MTC shall be less positive than +0.7 x 10 Ak7k/"F

for power levels up to 70 percent RTP with a linear ramo to 0 Ak/k/*F at 100 percent RTP.

{

i The E0L/AR0/RTP-MTC shall be less negative than j -4.8 x 10 Ak/k/'F.

l 2.3.2 The MTC Surveillance limit is:

i- The 300 ppm /AR0/RTP-F -equalto-4.05x10'flTCshouldbelessnegativethanor Ak/k/ F.

where: BOL stands for Beginning of Cycle Life

AR0 stands for All Rods Out t

HZP stands for Hot Zero THERMAL POWER l E0L stands for End of Cycle Life g 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. Control Rod Insertion Limjts (Specification 3/4.1.3.6) 2.5.1 The control rod banks shall be limited in physical insertion as-shown in figure 3.

I PAGE 2 of 12 i

l-COLR for VEGP UNIT 1 CYCLE 4 2.6 Axial Flux Difference (Specification 3/4.2.1)

(relaxed axial offset control (RA0C) 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 fo 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 Fo - 2.50 2.7.3 K(Z) is provided in figure 5.

C RTP 2.7.4 Fo (Z) s Ec

• KfZ) for P > 0.5 P

• W(Z)

C RTP Fo (Z) s Ec

• K(Z1 for P s 0.5 0.5

• W(Z)

O 2.7.5 W(Z) values are provided in figures 6 through 8.

PAGE 3 of 12

~

r COLR for VEGP UNIT 1 CYCLE.4 sO

-2.8 Nuclear Enthalov Rise Hot Channel Factor - Fh (Specification 3/4.2.3)

RTP 2.8.1 . Ff, s F3 , * (1 + PF3 , * (1-P))

where: P - THERMAL POWER RATED-THERMAL POWER RTP-2.8.2a F, 3

1.57 for LOPAR fuel and RTP-

-2.8.2b F, 3

= 1.M for WME 5 fuel

-2.8.3 PF3 , = 0.3 for LOPAR and VANTAGE 5 fuel l

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lO i,s ,s...o .sco u.ui PAGE 4 of 12 i

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

COLR FOR VEGP UNIT 1 CYCLE 4

()

V-5.00 4.00

^

ACCEPTABLE b OPERATING

$C REGION (2500,2.90

=

0 REQUIRED SHUTDOWN h, - -

MARGIN g

O 3 2.00 O_ 8 a UNACCEPTABLE I

• OPERATING

~ (1000.1.30) REGION 1.00 0.00 0 500 1000 1500 2000 2500 zow RCS BORON CONCENTRATION (ppm)

FIGURE 1 REQUIRED SHUTDOWN MARGIN FOR MODES 3 AND 4 (MODE 4 WITH AT LEAST ONE REACTOR COOLANT PUMP RUNNING)

PAGE 5 of 12

r-COLR FOR VEGP UNIT 1 CYCLE 4 5.00 (2500,4.80) 4.00 ACCEPTABLE I OPERATING REQUIRED g REGION SHUTDOWN k MARGIN

$ 3.00 g z

{!

s -

z

, 2.00 .r I UNACCEPTABLE

• OPERATING REGION

~

(500,1.00) 0.00 0 500 -1000 1500 2000 2500 71/5 I RCS BORON CONCENTRATION (ppm)

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

O V

PAGE 6 of 12

r' COLR FOR VEGP UNIT 1 CYCLE 4 (Fully Withdrawn *)

20 (28.0 %,225) (78.0%, 225)-

200 BANK B 180 I I

$ 160 (100 %,161) 8 .-

5

'E 140 g ) BANK C 120 0 [

5' /

~

O 8 /

s

< 80

/

]_ [ .

BANK D 8 60 /

f(0%,46) 20 '{

/

(30.2%,0)[

0 20 40 60 80 100 POWER (percent of 3411 MWt)

• Fully withdrawn shall be the condition where control rods are at a position within the interval 2225 and (231 steps withdrawn.

FIGURE 3 ROD BANK INSERTION LIMITS VERSUS THERMAL POWER PAGE 7 of 12

COLR FOR VEGP UNIT 1 CYCLE 4 O

120 100 UNACCEPTABLE UNACCEPTABLE

=

E 8 80 5

h ACCEPTABLE _

60 0 !y (-35, 50) (+30, 50) o 40 tz C

20 P50 -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 8 of 12

l

.. . . 1 COLR FOR VEGP UNIT 1 CYCLE 4 1.20 1.00 8

b I 0.80 9

52

$ 0.60 0.40 2

Fa = 2.50 R 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 2*

CORE HEIGHT (ft)

FIGURE 5 K(Z) - NORMAllZED Fo(Z) AS A FUNCTION OF CORE HEIGHT (D

v PAGE 9 of 12

g3 COLR FOR VEGP UNIT 1 CYCLE 4 V

Antal (levaton BOL Point ,

feet) W,Zi 1.6 . 1 i2 00 i.0o00

• 2 11 80 1 0000 j ;i

• 3 11 60 1.0000 l-  ! , ,

• 4 11 40 1.0000 n l4 ll *  ! 11.20 1 0000

!!l l!i, ili 1 . 5

= 6 11 00 1 0o00

!): Ill; alii lll1 l 6 i 11 I-

! 6 1:

• 7 to 80 1 0000 10 60 1 0000

i- *

'til lil4 !{l liii i:

l t-  :) 1 1' 8

9 10 40 5 0o00 1.5 .*

' i ,i >> ' i- 1 ,

10 10 20 1 0000 li' zi

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' I i- 14 i= 11 10.00 1 2289 i- li; ,

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=--- -

12 9 80 t.2003

, ~j 3 :-

lli' 1 1761

-1 ;

'i ' j!: lia; i j'l .i ,i j j; 13 9 60 14 9 40 1 1576

!!!!  !!!' Ilte !t:i i l'i , .ii 1i  ; i;ll ,j!!

15 9,20 1 1452 ilji ;jj! 16 9 00 1.1391 11!  !!!i ll!  !!; i' i's .,i 'il)

! It illl l!Il t

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i li!! ;i ilt ill ili; lill  !!!i it;! ii; g 0; ll

, ll I l 8 40 1,1365 IllI 'lli l ll 'll! ~~

I:ll lll1 11ll Ill!

.li l!ll lill IIlj 18 20 8.20 1.1376

!!II l I ! !_ illl llll Il! llll {ll-- ll-l 1.1405 8.00 IIII .l l ! ll I'll 21 22 7.80 f.1428

- ll l III l lI IlYI II I lll; llll llll llll llll lll l l

!.I llll iii lli llll lIl! IIll illl hhll llll ll l 2 , 1[

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!ill llli l'!! lill lill ll ll ll l fl o llll lll ll!i lll) 27 6.80 1.1495 l llll lll llIl llll lli lIII illl llll llll ll ll l l

-  : . - 28 6.60 1.1470 (j 1.1435

} Ik l!!! lll! !lll III-I ll lll l ll 6.40 i!!; lll -ll --

29 l : llll f,,

!!I! ll} lfl! llll llfl Illl !!Il !I!} llll _nlffl llll ll  ;

1.1292 llle llll III! 'lli illi ll , llll llll 32 5.80

!!ll lll llI' llll 33 5.60 1.1351 1.2 till l!ll lll' llil !il!"ll' Il!i Illl jll lllI llll l- !

! 34 35 5.40 5.20 1.1522 1.i726 Iill Illi lll> illl illi  :-  :

'l I lill 1111 lij il* ~ ll i l 36 5,00 1.1908 1.2117 ggM llll j ll 37 4.80 Ill' !lil llll lI! l  !! l l' I

lllI I!~ l ll! Il I llA"llll Illl ll jj 2g 40 4.20 27 1.2794 llll llll llII lllI II- I i llI ll l ll l ljj 41 4.o0 1.3000 1.1 3 80 1.3594 illl 1ll 1:l' I!!! I!ti i.lt ll } l l lll l l lill } l 42 illl lil l 'it Il!! li!i i11 li ! I ij l l }lll l l l3 3;80 l 333 45 3.20 1.3722 llll ll l l ll l,ll llll l:ll l l l

} ll llll

-=;

l

46 3.0o 1.3975 l, !l' llll 2.80 1.4293 l I l' l f' .ll ll l l llll l ll l I '

I 47 48 2.60 1.4s33 Illi liij I! l ll Illl ill! lil! lil I!ll lIl lill lll 49 2.40 1.4964 1.0 12 50 2.20 1.5282 3 5 6 7 8 9 10 11 1.5587 0 1 2 4 51 2.00

. 52 1.80 1.0oo0

! CORE HEIGHT (feet)

• 53 1.60 1.000o

• 54 1.40 1.0oo0

. 55 1.20 1.oooO FIGURE 6 1.0oo0 e 56 1.0o a 57 0 80 1.00o0

. 58 0.60 t.oooO RAOC W(Z) AT 150 MWD /MTU e 59 0.40 1.0oo0

• 60 0.20 1.0000

• 61 0.00 1.0000 A

e Top and Bottom 15% Excluded per This figure is referred to by Techmcal Specificanons 4 2.2.2d. 83/4 2.2 Tocnnt ca1 Spect f ication 4.2.2.2 PAGE 10 Of 12 21751

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-4 ,

,, e COLR FOR VEGP UNIT 1 CYCLE 4 pJ-Antal Elevaton MOL Point ifeet) Wa 2 l 1.5 .,

e i a no , oooo 1.0000 l'il I'

' l- -i 'It e 2 11.go l1ll I' l E!!l lI! 'l Ill '!i  ! llll kiI lii' lil? ;o '

og 5 11.20 1 00M Iill !ili lili i llI '}'l I illl lii+ 11ll I l !i!! 1 '8 l l '

• 6 11.00 1 0000 I!l ll lIII l: l !-ll ,l! !!l f! lifl !!l- l'lt 'I=

l g l0 1o do 1**

.j,4 iHI N' :lil l!i. Ul! Ui Nli H!I illi ill 1:!i <

• 10 8

10.20 1.0000 l!l! : l l lll f!l! iill !l IIlI .'

i lllt ;;j.

i='+ 11 12 10.00 9.80 1 2766 1 2564 9.60 1.2326 lIII flll ll!. llll llll lll l l' l' l 'jji

' ll l l!l' l l l' 13 14 9.40 1 21a0 1.2083 9.20

. lll !l llll l ll' l l l lll lll ll

} lll{

ljll j:ll 15 16 9.00 1.2130 l!l 8.80 1.2220 llll llll llll l, l l l' ~ llll llll

' - llll lllll;ll 17 18 8.60- 1 2301 1,3 illl llll l l' lll ll} l ll ll llI lll li(( 19 20 8.40 8.20 1.2346 1.2377 lllllll lll l ll ll ll l

' ' -ll l - l- l l: lll llll  :'

21 22 8.00 7,80 1.2407 1.2217 1.2413

- l" 23 7.60 p

I l n ll-n l l l l 4 l

24 7.40 1.2401 3 l 1,! I l' {[ l ll l~  ; 25 7.20 .i 23ai e

~

26 7.00 1 2204 l a1 l l l  ! fo4 ' - l - 0l lll 27 6.80 1.2206 l

7 --

l l fi 30 6

6.20 1

i.1833 -

1.2 I.'k

- ll l.ll 1.1667

} l l .'d I

i' ll l l l 31 32 6.00 5.80 1.1541 I i l l .l - l oki i l- 33 5.60 1.1515 j

34 5.40 1-1598 i

l, 'l  ! "Ma i t l  !! 35 5.20 1.1702 36 5.00 1.1786 l :l l l 37- 1.1859 l l l l  ; l l -

4.80

I 38 4.00 1.1922 i

I l l

.li 11 l I

l .l l .iI l l l

ll Ij ' 39 4.40 1.1970 l1Il l ll1I l l l l

1 l l .' I c' l .

40 41

- 42 4.20 4.00 3.80 1.1997 1.2031 1-2089 lll l

ll

!!L

}

l

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11

-- 43 3.60 1.2136 44 3.40 1.2166 ll l l l 1.2185 Ii l I '  ! l l! 45 3.20 46 3.00 1 2214 l ll l- l 47 48 2.80 2,60 1.2274 1.2371-lk lll l ll l l l lll o 2.40 1;2475 1.0 50 2.20 1,2574 0 1 2 3 -4 5 6 7 8 9 10 11 12 1.2671; 51 2.00

• 52 1 80 1 0000

. CORE HEIGHT (feet) = 53 1.60 1.0000

= ,54 1.40 .1.0000 e 50 1.20 1.0000 FIGURE 7 . 56 1.00 i.0000 e 57 0.80 1.0000

. 58 o.60 1.0000 RAOC W(Z) AT 7000 MWO/MTU a 59 0.40 1,0000 e 60 0.20 1,0000

• 61 0.00 1.0000

• Top and Bottom 15% Excluded per' This f6gure is referred to by Technical Specifica0ons 4.2.2.2d B3/4.2.2 Tecnn1eal Spec 1 f ieatt on 4.2.2.2 aou PAGE 11 Of 12

q COLR FOR VEGP UNIT 1 CYCLE 4 V

Autal Elevation EOL 1.$

point .vesti wi z i

• 1 12 00 1 0000

• 2 11.80 1 0000 jj

• 11.60

, i:i 1 0000

-l:I 4,t 3 i, ;i ,

ii 3

4 11.40 1.0000

!!![ ' ! ' .l!!:j Il '

,,i >}!' ll ;l i , i i  ;! I', a 5 11.20 1 0000

- J- = 6 11.00 1 0000 lil !!ll f, l  ! ! ! ,! 'ii' jj=  !!!  !

l l i, ,

l3 e 7 to go i oooo

• 8 10.60 1 0000 I,' i . i

• 9 to 40 1 0000 l4 ,, ..

• 10 10.20 1 0000

!'l lli! i=! l' lit -ii i ti if j~ 11 10.00 1 2221 i

'- 12 9 80 1 2160

,!!j t

lli l a

i! l ;i t ! i-  !!

I,,

I i  !'

I 13 9 60 1 2142 il!l llll I'll lltI f!!! 'll' ill: ll11 ll!l 'Il llii ll!! 5 9$20 I!88 i i lH! i;;!  !!:'  ;!il !ill ll- Ill: 4 i ili -

il!: I 8N IE3

'3

!l- ll !I!! ll ll llI! !ll! llll !lll fl llff llll g g[ 0 I UH I!! !!!! IIH HH !!!! !!n in! :n !!i: lu HH 't l:0  :'u!

q lil ~ l llan! Ihl ilu Nil d!iAu i ih ;!i !jj 'i  ?.E Ui

!E 1L lll sil ihl. !!!I !!il @i i!! 11 Ii: I n j ij 'l  ;:ll  :';;;

o UI Il ut! BC liMlifn li lN jij a it di 2; ;g U;';

V ,, Hli Li illMid illi Ni in n un"iff4 iil lij 2l l:n ug; IHI IIl  !!il lI! Ill I I Illi 11 ll 111; ll11 llH i l:s  ;;

lll 1.2188 llll l 'll llll l l ll l :

l lll .

--l Il ll! lll 32 33 5.80 5.60 1.2142 1.2137

- l l. ll -

lll .:

l ll  !

I l; ll l ll ll; l

-  ! l lll l i i 34 35 5.40 5.20 1.2185 ll' ll l ll lll l ll ll l ll l ll l l- l :l . lj' 36 37 5.00 4,80 1.2275 1.2348 ll lll 38 4.60 1.2394 lll lll ll I ll ll l l lll1 39 4.40 1.2422 1.1 1 2429 40 l lll ll l ll l- ll l j llll l j'j ll lll- lll llll . ::. 41 4.20 4.00 1 2412 lll IIl lll .! l.ll lil? lll lll lll! lll i ll }l l 42 43 3.80 3.60 1 2375 1 2316 j' ll lll l l ll lli lll l l 44 45 3,40 3.20 1 2239 1,2162 l l l l l l l ll ll l 46 3.00 1 2146 l l ,

47 2.80 1.2213 1.0 ll!! ll l l -! f lll lll ll l!ll lll' lll lll 48 49 2.60 2.40 1.2342 1 2467 0 1 2 3 4 5 6 7 8 9 10 11

" 50 2.20 1.2580 51 2.00 1.2697 CORE HEIGHT (feet)

• 52 1.80 1 0000

• 53 1,80 1.0000

• 54 1.40 1.0000 FIGURE 8

. 0 };g l$

• 57 0.80 1.0000 RAOC W(Z) AT 15000 MWD /MTU = $8 0.60 1.oco0

• 59 0.40 1.0000

• 60 0.20 1.0000

• 61 0.00 1.0000

(]

This figuru in referred to by Technical Specifications 4 2.2.2d. B3/4 2 2 n a oct at . 2 rusi PAGE 12 of 12