ML20058C166

Core Surveillance Rept for North Anna 2 Cycle 8 Pattern Qf

ML20058C166
Person / Time
Site:	North Anna
Issue date:	10/25/1990
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML20058C164	List: ML20058C161 ML20058C166
References
NUDOCS 9011010017
Download: ML20058C166 (9)

Text

,

CORE SURVEILLANCE REPORT FOR NORTH ANNA 2 CYCLE 8 PATTERN OF i

i l

^

9011010017 901023ADOCK 05000339 PDR PDC P

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

1 l.

i l

I

)

FIGlRE 7 - AXIAL FLUX DIFFERENCE LIMITS i

AS A FUNCTION OF RATED THERMAL POWER l

FROM 9000 MWD /MTV BLRNUP TO EOL FOR NORTH ANNA UNIT 2 CYCLE 8 l

l

• 20602 i

l l

2 i

l

)

1.00602 I.12.100)I (4.100f I

i /

\\

E I

t

/'

1 I Unaccastable

~ 1.006811 i

/

i on...,4.,

l

/

in..t.l,i.

\\l 1

i i

E vo iratwn

i. 6.t

/

I\\

l t

5

/

\\

(-17.50)

(+M,50) i

• 4.08401l 5

l l

l' M

' l.08481 1

1 l

l I

i

0....

l

-5.00681 3.98401 1.00601 1.00+61 3.86401 5.00601 PERCENTTLUXDIFFERENCE(DELTA-1)

.l

.l l

)

d i

r

l' l

d FIGLRE 6 - AXIAL FLUX DIFFERENCE LIMITS l

AS A FUNCTION OF RATED THERMAL POWER J

FROM 150 MWD /MTU BURNUP TO 9000 MWD /MTU l

FOR NORTH ANNA UNIT 2 CYCLE 8 i

1 l

J

)

4 1.20+0!

l l

l 1.00+0!

(-12.1001

(+4.100)

/

\\

.g l/

l

\\

Unacceptadle j

8.00401:

Onoratien 1 3

2

/ Acbeotable\\

~

E

/

Up3 ration

\\

=

, l.00+01

/

\\

/

2 l

E

(-27.50)

(+20.50) j 4.00601 I

I s

r

• 2.00+Ps 0.00+00

-5.00401

-3.00+01

-1.00+01 1.00+01 3.3O+01 5.00+0i PERCENTFLUXOlFFERENCE(DELTA-l) 1 r

i

-,.-..,.,.....,--..,_m.,

.---,w, w y.

--w.

....,.,,p

,,.,...m.,

,,--me,

,,--3,,

2 j

FIGlRE 5 - N(Z) FUNCTION FOR N2C8 AT 2893 MW FROM 16100 MWD /MTU BLRNUP TO EOL TOP AND BOTTOM 15 PERCENT EXCLUDED AS PER TECH SPEC 4.2.2.2.G 1

1 HEIGHT N(Z)

-l (FEET)

J 10.20 1.171 10.00 1.167 9.80 1.161

~

9.60 1.157 i

9.40 1.153 9.20 1.156 1.22100 9.00 1.167

~

x 8.80 1.182

\\

8.60 1.192 8.40 1.200

[

8.20 1.207 1.20600 8.00 1.211-d

]

\\

7.80 1.213 g

/

\\

7.60 1.215 7.40 1.219

\\

\\

d 7.20 1.221 1*18400

=

7.00 1.221 l

\\

f

=

6.80 1.222 6.60 1.220

\\

/

6.40 1.217

=

l d 1.11400 1

1

( /

6.20 1.209 l

g

\\

f

(/

6.00 1.201 l

=

\\

/

v 5.80 1.189 l

g 5.60 1.177 5.40 1.162 i

1 14'80 5.20 1.143

)

[

5.00 1.131 4.80 1.129 t(C 4.60 1.129 1.12t00 4.40 1.129 4.20 1.128 0.00100 2.00+00 4.00100 6.00+00 8.00600 1.00+01 4.00 1.125 COREHEICHT(FEET) 3.80 1.123 3.60 1.124 3.40 1.123 3.20 1.127 3.00 1.133 2.80 1.143 2.60 1.153

'l 2.40 1.163 2.20 1.172 2.00 1.180-1.80 1.188

3 i

NORTH ANNA UNIT 2 CYCLE 8 CORE SURVEILLANCEJ M I

This Core Surveillance Report is provided in accordance with Section j

6.9.1.7 of the North Anna Unit 2 Technical Specifications.

The burnup-dependent Cycle 8 N(z) function for Technical Specification 4.2.2.2.C is shown in Figures 1-5.

N(z) was calculated according to the procedure of VEP-NE-1-A.

The N(2) function

• Will be used to confirm that the heat flux hot channel factor, FQ(z), will be lim'ited to the Technical Specifications values of 2.19K(z)

FQ(z) s - --------,

P > 0.5 and l

P FQ(z) s 4.38 K(Z),

P s 0.5.

The Cycle 8 Axial Flux Difference (AFO) limits for Technical Specification 3.2.1 are shown in Figures 6 and 7.

These limits were calculated ac-cording to the methods of VEP-0E-1-A and are comparable to the previous Cycle 8 limits.

The limits on Axial Flux Differ,3nce assure that the FQ(z) upper bound envelope is not exceeded during 91ther normal operation or in the event of. xenon redistribution following power changes.

I i

l

• The N(z) function, when applied to a power distribution measured under equilibrium conditions, demonstrates that the initial conditions assumed in the LOCA analysis are met, along with the ECCS acceptance criteria of l

10CFR50.46.

1 1

1

=

FIGlRE 1 - N(Z) FUNCTION FOR N2C8 AT 2893 MW FROM 0 to 1000 MWD /MTU BLRNUP I

TOP AND BOTTOM 15 PERCENT EXCLUDED AS PER TECH SPEC 4.2.2.2.G i

HEIGHT N(Z)

(FEET) 10.20 1.180 10.00 1.173 4

9.80 1.166 9.60 1.161

~

9.40 1.157 9.20 1.156

\\

9.00 1.150 1.11+00 T

8.80 1.149

(

.h f

8.60 1.155 8.40 1.165

\\

\\

l l

8.20 1.172 1.17400 8.00 1.176

\\

f k

f 7.80 1.179 I

ce O

7.60 1.180 t

k f

k f

j*jg,go 7.40 1.179 7.20 1.177 k

f k,/

d 7.00 1.173 6.80 1.167 E

k f

k [

6.60 1.160

1,jago 6.40 1.149 g

i v

\\

f 6.20 1.140 l

d

\\

f 6.00 1.134 E 1,14,go

\\

/

5.80 1.131 W

/

5.60 1.128 E

\\

/

5.40 1.127

\\

j 5.20 1.125 1.13400

/

5.00 1.125

\\

f 4.80 1.124 l

\\

/

4.60 1.126 l

4.40 1.129 l

1.12f00 4.20 1.134 O.00400 2.0R00 4.00100 6.00100 8.00100 1.00+01

~

COREHEIGHT(FEET) 3.60 1.152

-3.40 1.157 3.2) 1.161 3.00 1.165 2.80 1.167 2.60 1.168 2.40 1.170 2.20 1.174 2.00 1.179 1.80 1.184

3 FIGlRE 2 - N(Z) FUNCTION FOR N2C8 AT 2893 MW FROM 1000 to 3000 MWD /MTV BLRNUP TOP AND BOTTOM 15 PERCENT EXCLUDED AS PER TECH SPEC 4.2.2.2.G i

HEIGHT N(Z)

(FEET) 10.20 1.179 10.00 1.172 9.80 1.168 1.22400 9.60 1.169 9.40 1.171 9.20 1.177-9.00 1.184

^

8.80 1.192

['N 8.60 1.199 1.20600 j

\\

8.40 1.203 8.20 1.206

/

\\

8.00 1.208-7.80

'1.211 Wg

/

)

7.60 1.212 0 1.18400

\\

/

(

7.40 1.211 7.20 1.208 g

=

(

7.00 1.203

=

6.80 1.198 3

h

/

6.60 1.189

"' 1.15 + 0 0

\\

f 6.40 1.180 e

r 6.20 1.168 g

6.00 1.154

=

1 5.80 1.141 g

\\

/

5.60 1.131 1.14t00

\\

/

5.40

-1.126 5.20 1.124

\\

/

5.00 1.125 4.80 1.124 (j

4.60 1.126 1.12+00 4.40 1.129 4.20 1,134 0.00+00 2.00+10 4.00400 6.00+00 8.00+00 1.00+01 4.00 1.139 COREHEIGHT(FEET) 3.80 1.145 3.60 1.152 3.s0 1.157 3.20 1.161 3.00 1.165 2.80 1.167 2.60 1.168 2.40-1.170 2.20 1.174 2.00 1.179 1.80 1.184 l

i FIGURE 3 - N(Z) FUNCTION FOR N2C8 AT 2893 MW FROM 3000 to 11000 MWD /MTU BURNUP TOP A W BOTTOM 15 PERCENT EXCLUDED AS PER TECH SPEC 4.2.2.2.G HEIGHT N(Z)

(FEET) 10.20 1.171 10.00 1.164 9.80 1.163 9.60 1.168 9.40 1.172 9.20 1.177 1.21100

^

9.00 1.185

[

\\

8.80 1.192 X

8.60 1.199 8.40 1.203 f

\\

8.20 1.206 1.19400 m

8.00 1.208 f

I d

7.80 1.211 g

\\

7.60 1.212'

/

\\

7.40 1.211 d

1*IH00

/

\\

7.20

-1.208

=

g i

\\ [

7.00 1.203 E

q

/

b 6.80 1.198 6.60 1.189 7

=._

6.40 1.180 d 1.15100 J

6.20 1.168 g

\\

/

6.00 1.154

=

\\

/

5.80 1.141

=

\\

/

5.60 1.130 I

• U

)

/

5.40' 1.122 5.20 1.117 f

V\\

5.00 1.112 4.80 1.114

\\/

4.60 1.118 1,11+00 4,40 1.121 f*fh 0.00400 2.00+00 4.00+00 6.00100 8.00100 1.00+01 COREHEIGHT(FEET) 3.80 1.126 3.60 1.125 1

3.40 1.122 3.20 1.122 3.00 1.127-2.80 1.136 2.60 1.144 2.40 1.152 2.20 1.158 2.00 1.165 1.80 1.170 l

j i

FIGlRE 4 - N(Z) FUNCTION FOR N2C8 AT 2893 MW FROM 11000 to 16100 !!WD/MTU BURNUP TOP AW BOTTOM 15 PERCENT EXCLLDED AS PER TECH SPEC 4.2.2.2.G HEIGHT N(Z)

(FEET) 4 10.20 1.172 10.00 1.166 9.80 1.165 9.60 1.168 9.40 1.171 9.20 1.177 1.22100

~

9.00 1.184

/ \\

8.80 1.192 8.60 1.198

[

8.40 1.203 1.20100 8.20 1.208

.d

/

\\

8.00 1.211' g

/

\\

7.80 1.213 g

/

7.o0 1.215 E I*IId'

)

/

7.40 1.219 7.20 1.221 f

\\

g 7.00 1.221 6.80 1.222 5

\\

/

V 6.60 1.220 4

d 1.t:100

\\

l 6.40 1.217 g

\\

J 6.20 1.209

=

\\

j 6.00 1.201 g

5.80 1.189 5.60 1.177 1 14'00 5.40 1.162

)

[

5.20 1.143 t

5.00 1.131 (C

4.80 1.129 1.12100 4.60 1.129 4.40 1.129 0.00100 2.00100 4.00100 6.00100 1.00i00 1.00101~

4.20 1.128 COREHEIGHT(FEET) 4.00 1.126 3.80 1.124-t 3.60 1.125 3,40 1.124 3.20 1.127 3.00 1.133 2.80 1.143 2.60 1.153 2.40 1.163 2.20 1.172 2.00 1.180 1.80 1.188

)

t

)

s