ML20235V845

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Forwards Radial Peaking Factor Limit Rept for Cycle 2 Per Tech Spec 6.9.1.9.Functions to Be Used for RAOC & Base Load Operation Included.Refueling Outage Scheduled for 871218 & Criticality Scheduled for 870227
ML20235V845
Person / Time
Site: Catawba Duke Energy icon.png
Issue date: 10/12/1987
From: Tucker H
DUKE POWER CO.
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8710150347
Download: ML20235V845 (9)
v • d • e


Text

p' -- ~p Dmm POWER GOMPANY P.O. DOX 33180 CHARLOTTE, N.O. 28242 HALH.TUCKEH Ten.npuown vme rememarr (704) 073-4531 nommaa reopmmon

\

' October 12, 1987 I

1 U. S. Nuclear Regulatory Commissien i Attention: Document Control Desk l Washington, D. C. 20555 j l

Subject:

.' Catawba N.2 clear Station, Unit 2 Docket No. 50-414 Unit 2 Cycle 2 Peaking Factor Limit Report Technical Specification 6.9.1.9 Gentlemen: l Pursuant to Technical Specification 6.9.1.9, please find attached the Radial Peaking Factor Limit Report for Catawba Nuclear Station, Unit 2 Cycle 2. The enclosed Peaking Factor Limit Report provides the W(z) functions that are to be ,

used for RAOC and base load operation during Cycle 2. A set of data covering '

three specific burnup steps is provided which pennits the determination of W(z) at any cycle burnup through the use of three point interpolation. The information for base load operation has been obtained using, a 5 percent AFD about a measured target in the power interval between 80% and 100% of rated thermal power. The base load operation W(z) is also conservative for a 3 percent AFD about a measured target. Figures 1-3 are the W(z) functions appropriate for RAOC operation and Figures 4-6 are the W(z) functions appropriate for base load operation. All of these W(z) values have been independently verified.

The Unit 2 End-of-Cycle 1 refueling outage is scheduled for December 18, 1987 with Cycle 2 initial criticality scheduled for February 27, 1987.

Very truly yours, 7 / "

( ), /,M .pyr Hal B. Tucker JCT /137/sbn Attachment kk e

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! .U. S. Nucle:r R:gulatory Commission October 12, 1987- l s

[< -Page.Two- j

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1 xc: Dr. J. Nelson Grace, Regional Administrator U. S. Nuclear. Regulatory Commission Region'II  ;

.101~Marietta Street, NW, Suite 2900, l

Atlanta, Georgia 30323 i L Mr..Heyward Shealy, Chief Bureau of Radiological Health South Carolina: Department of Health &

Environmental Control:

2600 Bull Street Columbia, South Carolina 29201

.INPO Records Center Suite'150P 1100'Circie 75 Parkway Atlanta, Georgia 30339.

American Nuclear Insurers c/o Dottie Sherman, ANI Library Tho. Exchange, Suite 245 270 Farmirguen Avenue i Farmingto.., CT: 06032 M&M Nuclear Consultants  ;

1221 Avenue of the Americas New' York, New York 10020 i Mr. P. K. Van Doorn NRC Reside '. Inspector Catawba Muelear Station i

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l PEAKING FACTOR LIMIT RETORT FOR CATAWBA UNIT 2 CYCLE 2  ;

I l

t RAOC AND hASE LOAD OPERATION 'A l

This Peaking Factor Limit Report is provided in accordance with Paragraph i 6.9.1.9 of the Catawba Unit 2 Technical Specifications. l

- The Catawba Unit 2 Cycle 2 elevetion dep.nd nt W(z) values for RAOC operation at beginning, middle, and near end of-life are shown in ,

Figures 1 through 3, respectively. This information is sufficient to determine .W(z) versus core height for Cycle 2 burnups in the range of 0 ,

MWD /MTU to 12000 MWD /MTU through the use of three point interpolation. j 1

The Catawba Unit '2 Cycle 2 elevation dependent W(z) values for base I load operation between 80% and .100% of rated thermal power with a 3  !

percent-AFD about a measured target value at 150, 6000, and 11500 MWD /MTU Cycle 2 burnups are shown in Figures 4 through 6, respectively.

This information is sufficient to determine W(z) versus core height for

.Cycl e 2 burnups in the range of 0 MWD /MTU to 12000 MWD /MTU through the use of three point interpolation.

The minimum allowable power level for base load operation, AFL , for Catawba Unit 2 Cycle 2 is 80 percent of rated thermal power.

The appropriate.W(z) function is used to confirm that the heat flux hot channel factor, Fq(z), will be limited to the Technical Specification values of; Fq(z) 5 1.12 [K(2)] for P > 0.50 and P

Fq(z) s 4.64 [K(Z)) for P s 0.50 The appropriate elevation dependent W(z) values, when applied to a power distribution measured under equilibrium conditions, demonstrates that the initial conditions assumed in the LOCA are met, along with the ECCS accep-

. tance criteria of 10CFR10.46.

(1) WCAP-10216-P-A, Relaxation of Conscant Axial Control - Fq Surveillance Technical Specification 1

1' l

. i

^ s jV .

HEIGHT BOL

'? (FT.) W(2)

  • O.0 1.000
  • O.0 1.000-
  • O.0 1.000
  • O.0 1.000
  • O.0 1.000 1.#
  • 1.0 1.000

. , i i

1.2 1.000 1.4 1.000

  • 1.6 1.000 4

1.8 1.543 1.5 w 2.0 1.529 l 1.515 2.2 0 2.4 1.498-2.6 1.480 I

i 2.8 1.461 88 ,

> 3.0 1.440 i 3.2 1.424

e. 3.4 1.421

'v e 3.6 1.418

. o 3.8 1.414

'# 1 ei 4.0 1.406 i J 4.2 1.395

", 4.4 1.380 e 4.6 1.364 4.8 1.34B

_ 1.2 6 5.0 1.322 5.2 1.298 n 5.4 1.276 5.6 1.261 5.8 1.200 I'8

  • 6.0 1.247

' ^ 6.2 1.243 N , , 6.4 1.232

  • . 6.6 1.228 U . 6.8 1.223 1,5 ."
  • 1.216 7.0
  • 7.2 1.206

'a 7.4 1.193 0 7.6 1.177

  • 7.8 1.159 1.M
  • 8.0 1.139 I 8.2 1.118 8.4 1.099 1

"_ 8.6 1.084 l B.8 1.077 i

" 9.0 1.068  !

9.2 1.060 9.4 1.06'

' 9.6 1.061

- 9.8 1.061 I' " '

10.0 1.066 {

  • 10.2 1.070 )

' -

  • 10.4 1.000 i 4
  • 10.6 1.000
  • 10.8 1.000

,,, 1.000

  • 11.0
  • 11.2 1.000
  • 11.4 1.000
  • 11.6 1.000 g,g
  • 11.8 1.000 i
  • 12.0 1.000  ;

. . . . . . u soTTou CORE HEIGHT (FEET) Top 1

1 FIGURE 1 CATAWBA UNIT 2 CYCLE 2 RAoC W(Z) AT 150 MWD /MTU L

TOP AND BOTTOM 15% EXCLUDED AS PER TECH SPEC 4.2.2.2.G l.

\ .. - - _ _ _ _ .

); .s

< ;3

[ q ;. . .. _

,, : 4

,  ; i ..-

p t: >

HEIGHT MOL (FT.). W(2)

  • 0.0 1.000

'

  • O.0 1.000  :'
  • O.0 1.000 V
  • O.O 1.000

.1 *' O.O <1.000 L . 1.5

  • 1.0 1.000

' * . 1.2 .1.000 1 o' 1.4 1. 000 ~ j

-

  • 1.6 1.000 1 1.8 1.270 g,y p 2.O 1.255-7- 2.2 - < 1.240-2.4 1.225

-2.6 1.211 2.8 1.196 g,g 3.0 1.189 3.2 .1.192 I 3.4 1.201.

3;6 1.210 3.8 1.217

1.e 4.0 1.221.

4.2 1.225' 4.4 1.228 - i 4.6 1.231 4.8 1.233" i 1.3 -5.0 ,1,232

5. 2 - -1.229 -

5.4 't.233 5.6 1.241 5.8 1.253 1Je 6.0 ' '

1.266 ,

n: 6.2 t.277 i N' ,"**"'t, 6.4 1.281 we 4, 0 6.6 1.283

. ps ' 1.284

  • 6.8 4 1.5 ,, 7.0 1.284 f .!
? , 7.2 -1.284  !

4, 'p ?'"e* , ,' 7.4 1.281 4

7.6 1.277

?  : ' 7.8 1.270

t. 1.30 , ^? ,, ,,c 8.0 1.259 8.2 1.245

=

'8.4. 1.228 O.6  :-1.212 j 8.8 1.198 .i

~ 1.5 9.0 1.194  ;

9. 2 ' 1.195 ~]

9.4 1.196  :

9.6 1.203 9.8 1.214 l 1W 10.0 1.224 10.2 1.232

  • 10.4 1.000
  • 10.6 1.000
  • 10.8 1.000 1.m
  • 11.0 1.000 i
  • 11.2 1.000
  • 11.4 1.000
  • 11.6 1.000
  • 11.8 1.000

  • 12.0 1.000 1.m . ., 4 . . ..

BONM TP CORE Kl0HTL (FEET) j FIGURE 2 m CATAWBA UNIT 2 CYCLE 2 RAOC W(Z) AT 6000 MWD /MTU TOP AND BOTTOM 15% EXCLUDED AS M TECH SPEC 4 92.2.G I

I i

I l

_ _ - = - - - _ - _ - -

i I

,.s , . i HEIGHT EOL i e

(FT.) W(Z) j O.0 1.000

  • O.0 1.000
  • O.O 1.000
  • O.0 1.000 t.-

f

  • O.0 1.000  !

s.3 1.0 1.000 )

1,2 1.000

  • 1.4 1.000
  • 1.6 1.000 1.8 1.246 1.m 2.0 1.231 s 2.2 1.215 2.4 1.199 2.6 1.189 2.8 1.193-

- 1.e 3.0 1.194 3.2 1.199 3.4 1.211 3.6 1.227 3.8 1.242 1.e 4.0 1-257

,,3 4.2 1.269

, 4.4 1.279  ;

^ '

4.6 1.285 l 4.8 1.288 s.3 ,

5.0 1.287 5.2 1.283

, 5.4 1.290

<, 5.6 1.306

, 5.8 1.328 1.m 6.0 1.352 m --

, 6.2 1.372

. N e,,qi* W 6.4 1.385 v e 6.6 -1,392 k l n , 6.8 1.394 1.35 * '

7.0 1.393 .

7.2 ' t.386

, , , 7.4 1.376

, , ,, 7.6 1.361

^

, g , 7.8 1.341 1.se e 8g; ,,, 8.0. 1.316 8.2 1.288 8.4 1.255 8.6 1,228 )

8.8 1.214 1.15 9.0 1.203 9.2 1.196 ,

9.4 1.193 4 9.6 1.197 9.8 1.206 1.te 10.0 1.215 10.2 1.222

  • 10.4 1.000
  • 10.6 1.000
  • 10.8 1.000 -

1.e6

  • 11.0 1.000 I
  • 11.2 1.000
  • 11.4 1.000
  • 11.6 1.000
  • 11.8 1.000 1.m u
  • 12.0 1.000 8  : 4 . . e.

B0 M TP l CORE E IGHT (FEET)

FIGURE 3 CATAWBA UNIT 2 CYCLE 2 )

RAOC W(Z) AT 11500 MWD /KTU TOP AND BOTTOM 15% EXCLUDED AS PER TECH SPEC 4.2.2.2.G

___--__________-_-__a

3 i

  • HEIGHT BOL (FT ) tr( Z )
  • O.0 1.000
  • O.0 1.000
  • O.0 1.000
  • O.0 1.000
  • O.0 1.000
    • ".
  • 1.0 1.000
  • 1.2 1.000 1
  • 1.4 1.000
  • 1.6 1.000 1.8 1.051

,0 ' ' 2.0 1.050

, 2.2 1.050 l 2.4 1.048 1

o 2.6 1.047

    • " 2.8 1.046

~~

3.0 1.045

- 3.2 1.045 3.4 1.044 3.6 1.043

  • 3.8 1.042 4.0 1.040

, 4.2 1.039 4.4 1.037 I* " <, 4.6 1.036 4.8 1.035 5.0 1.033

- 5.2 1.031 5.4 1.029 5.6 1.028

5.8 1.028 6.0 1.031

( m 6.2 1.035 bJ

+ 6.4 1.041 v '# 6.6 1.049 pc 1.057 6.8

  • 7.0 1.065 7.2 1.073 7.4 1.079 7.6 1.086 0 7.8 1.092 8.0 1.099 18 8.2 1.103 e 8.4 1.109 8.6 1.114 8.8 1.117
  • B.O 1.121 1.125

'*

  • 9.2

'** 9.4 1.127 B.6 1.128

'"*t*:

  • 9.8 10.0 1.129 1.129 1*

10.2 1.129

,0, ,

  • 10.4 1.000 o
  • 10.6 1.000 e o
  • 10.8 1.000

+.

  • 11.0 1.000
  • 11.2 1.000
  • 11.4 1.000
  • 11.6 1.000
  • 11.8 1.000 1m u U
  • 12.0 1.000 8 1 4 6 e CORE HEIGHT (FEET) 7gg BOTTou FIGURE 4 CATAWBA UNIT 2 CYCLE 2 BASELOAD W(Z) FOR POWERS BETWEEN 80% AND 100% OF RATED THERMAL POWER WITHIN t3% AFD OF THE MEA 5URED TARGET 150 MWD /MTU TOP AND BOTTOM 15% EXCLUDED AS PER TEPH SPEC 4.2.2.4.G

-; g;-

, .i 5[ *4 E HEIGHT M0w h#; (FT.)' 'W(Z).

  • . 0.0 1.000
  • O0 1.000
  • O.0 1.000 3.. *- 0.0 1.000
  • O.0 - 1.000
  • 1.0 1.000 .

g,y

  • 1.2 1.000
  • 1.4 1.000
  • 1. 6 ' 1.000 -

1.8 1.067 2.O' 1.064 4,, 2.2 1.060 0 2.4 1.057 2.6. 1.052 4' 2.8 1.047.

3.0 1.043

.  ; 3.2 1.038 3.4 1.036 4 3.6 1.035 1.s I' 3.8 1.033 4.0 1.031 4

4.2 1.029 e 4.4 1.028 4.6 1.025

4.8 1.023 5.0 1.021' '

i

, 5.2 1.021 +

5.4 1.023.

  • 5.6 1.027 o 5.8 1.032 '

6.0 1.038 r% 0 6.2 1.042 N . I 6.4 1.045~ -i w I'" 1.048 3r .

'l .

6.6 6.8 1.049 7.0 1.050 7.2 1.052 7.4 't.054

; 7.6 1.057 7.8 1.062

.* 8.0 1.065 l 8.2 1.069 i 8.4 1.072 -

  • 8.6 1.075  !

o 8.8 1.077 0 9.0 1.081 1.es 9.2 1.084

. 9.4 1.087 9.6 1.089 0 9.8 1.090

  • I 10.0 1.091 1' o . 10.2 1.091 o
  • 10.4 1.000  :
  • 10.6 1.000 J

'.' e 10.8 11.0 1.000 1.000

,

  • 11.2 1.000
  • 11.4 1.000
  • +1
  • 11.6 1.000 oe i '
  • 11.8 1.000 15 u
  • 12.0 1.000 s e e BOTTOM TP CORE HEIGHT (FEET) t FIGURE 5 CATAWBA UNIT 2 CYCLE 2 BASELOAD W(Z) FOR POWERS BETWEEN 80% AND 100% OF RATED THERMAL POWER i

WITHIN t3% AFD OF THE MEASURED TARGET 6000 MWD /MTU TOP AND BOTTOM 15% EXCU.DED AS PER TECH SPEC 4.2.2.4 G l.

v.

.w g

i

.,,. . :s .:.

HEIGHT EOL  :

( F 7 .. ) . W(2). .)

'Di

  • O.O 1.000 l m' e o,o g,ooo i
  • O.O 1.000  !

O.0 1.000 1.000 j

?; O.0

  • 1.0 1.000 -

q' g,w

  • 1.2 1.000  !
  • 1.4 1.000
  • 1.6 1.000 1.8 1.083 2.0 1.079
  • 2.2 1.074 i e 2.4 1.069. j 2.6 1.063
  • 2.8 1.056  !
  • 3.0 - 1.049 3.2 1.044
3.4 1.041 I v 1.038
  • 3.6 3.8 1.036 18 4.0 1.034

4.2 1.034 4.4 1.033 ee . 4.6 1.032 i O O P 0 4.8 1.033  ;

  • 5.0 1.040 -i
  • 5.2 1.047 e 5.4 1.053 5.6 1.058

' 5.8- 1.063 4 6.0 1.068  !

6.2 1.072 i

, ^o 6.4 1.074 n

N 6.6 1.075 v ,,, 6.8 1.075

'Bt 0 7.0 1.074

7.2 1.073 7.4 1.069

, 7.6 1.066 7.8 1.062 8.0 1.063 o- 8.2 1.067 ,

8.4 1.071 l 8.6 1.074 '

8.8 1.078 9.0 1.082 9.2 1.084

  • 9.4 1.087 1.es 1.089 9.6 9.8 1.091 ,

0 10.0 1.094 '

10.2 1.093

  • *
  • 10.4 1.000
  • 10.6 1.000
  • 10.8 1.000
  • 11.0 1.000 '
  • 11.2 1.000
  • 11.4 1.000
  • 11.6 1.000
  • 11.8 1.000

'

  • 12.0 1.000  ;

'". M

. . . . . n TP 80 CORE HEIGHT (FEET)

FIGURE 6 CATAWBA UNIT 2 CYCLE 2 BASELOAD W(Z) FOR POWERS BETWEEN 80% AND 100% OF RATED THERMAL POWER WITHIN t3% AFD OF THE MEASURED TARGET 11500 MWD /MTU TOP AND BOTTOtA 15% E).CLUDED A$ PER TECH SPEC 4.2.2.4.G

_ _ _ - _ - _ - _

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