Text

Cycle 8 Relaxed Power Distribution Control Pattern - Core Surveillance Rept
	ML20245C493
Person / Time
Site:	North Anna
Issue date:	06/05/1989
From:	; VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	;
Shared Package
ML20245C394	List: ML20245C392; ML20245C493;
References
	NUDOCS 8906260207
	Download: ML20245C493 (9)
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7 NORTH ANNA 1 CYCLE 8 RPDC PATTERN AN CORE SURVEILLANCE R 1

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6906260207 690626 PDR ADOOK 050003:.t F' PDC 1

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NORTH ANNA UNIT 1 CYCLE 8 CORE SURVEILLANCE REPORT

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This Core Surveillance Report is provided in accordance with Section 6.9.1.7 of the North Anna Unit.1 Technical Specifications. 3 1

1 The burnup-dependent' Cycle 8 N(z) function- for Technical Specification !

4.2.2.2.C is shown in Figures 1-6. N(z)'was calculated according to the '

procedure of VEP-NE-1-A. j I

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The N(z) function

will be used to confirm that the heat flux hot channel .i factor, FQ(z), will be limited to the Technical Specifications values of 1 J

2.19 K(z)

FQ(z) s ---------- , P > 0.5 and P

1 FQ(z) s 4.38 K(Z), P s 0.5. !

The Cycle 8 Axial Flux Difference (AFD) limits for Tc:hnical Specification 3.2.1 are shown in. Figure 7. These limits were calculated according to i the methods.of VEP-NE-1-A and are comparable to the Cycle 7 limits.

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The limits on Axial Flux Difference assure that the FQ(z) upper bound envelope is not exceeded during either normal operation or in the event of xenon redistribution following power changes.

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, ilong with.the ECCS acceptance criteria of 10CFR50.46. .

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FIGURE 1 - N(Z) FUNCTION FOR NIC8 AT 2893 MW l FROM 0 to 1000 MWD /MTU BURNUP i

. TOP A 2 BOTTOM 15 PERCENT EXCLUDED AS PER' TECH SPEC 4.4.2.z.G HEIGHT N(Z) j (FEET) 1.80 1 253 ,

2.00 1.245 j 2.20 1.236 ;

2.40. 1.226 l 2.60 1.216 I 2.80 1.204 l 1.26+00 3.00. 1.192 1

-3.20 1.180

\ 3.40 1.167

( 3.60 1.157-3.80 '1.148 4.00 1.143.

1.22+00 4.20 1.139 i me 4.40 1.136 4 5 4.60 1.131.

d 4.80 1.124

5.00

$ 1.117 d

" 5.20. 1.109 E . 18+00 ( 5.40 5.60 1.104 1.101

"' 5.80 1.104 6.00 1.107 d 6.20 1.112 8 / 6.40 1.114 W fN / 6.60 1.120 g 1.14+00 ' / \ / 6.80 1.127

/ 7.00 1.134

/ 7.20 7.40 7.60 1.139 1.143 1.147 1.10 M 0. ,

\N/ 7.80 8.00 1.150 1.151 8.20 1.151 0.00+D0 2. 00 + Of* 4.00+00 8.00+00 8.00+00 1.00+01 8.40 1:149 COREHEIGHT(FEET) 8.60 1.147 8.80 1.142

. 9.00 1.134 9.20 1.129 9.40 1.131 9.60 1.139 9.80 '

1.145 10.00 1.151 10.20 1.157

FIGlRE 2 - N(Z) FUNCTION FOR NIC8 AT 2893'MW FROM 1000 to 3000 MWD /MTU BLRNUP TOP AND BOTTOM 15 PERCENT EXCLUDED AS PER TECH SPEC 4.2.2.2.G HEIGHT. N(Z)'

(FEET).

1.80 1.253 2.00' 1.245 2.20 1.236s 2.40 1.226 2.60 1.216 2.80 '1.204 3.00 1.192

-1.26+00 3.20 1.180 3.40 1.167.

\ 3.60 :1.157

' 3.80 1.148 4.00- ~ 1.143 ~

-4.20 1.139 4 an 1.135 1.22+00 4.60 1.130 h'

a 4.80- 1.122 i /

A 5.00 1.116

\ 5.20 1.118 C )

E' j

/ / 5.40 1.130

( / 5.60 1.141

= 1.18+00 \ / \/ 5.80 1.154 E v 6.00 f 1.164 E

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[ 6.20 6.40 1.172 1.179 E 6.60 1.184 S 6.80 1.187 g I.14+00 , 7.00 1.191 7.10 1.195 7.40 1.200 7.60 1.205' v 7.80 1.208 8.00 1.210 1.10f00 8.20 1.210 8.40 1.208 0.00+00 2.00+00 4.00+00 8.00+00 8.00+00 1.00+01 8.60 1.204 8

COREHEIGHT(FEET) 8;8 lg 9.20 1.181 9.40 1.177 9.60 1.180 9.80 1.186 10.00 1.193 10.20 1.198

FIGlRE 3 - N(Z) FUNCTION FOR NIC8 AT 2893 MW FROM 3000 to 5000 MWD /MTU BURNUP TOP AIO BOTTOM 15 PERCENT EXCLUDED AS PER TECH SPEC 4.2.2.2.G HEIGHT. N(Z)

.(FEET) 1.80 1.173 )

2.00 1.167 2.20 1.161 2.40 1.153 2.60 1.146 2.80 1.140 3.00 1.134 3.20 l'.130 3.40 1.124~

1.2t+00 3.60 1.119 3.80 1.115

/\ 4.00. 1.114

/ \ 4.20 1.117 4.40 1.119 5

3,jg,go

[- 4.60 4.80 1.120 1.117 3 5.00 1.116 S ( 5.20 1.119 0 V 5.40 1.130

= 1.17+00 \ 5.60 1.142 T

=

/ 5.80 1.154 E \ j 6.00 1.164

% \ / 6.20 1.172 3 \ 6.40 1.179

"; 1

1 H00 / 6.60 1.184 5 6.80 1.187 5

f 7.00 1.191 ;

h / 7.20 ~

1.195 1.13+00 \ / 7.40 1.200

\ l 7.60 7.80 1.205 1.208 1.1t+00 vv *::: i:!!

8.40 1.208 0.00+00 2.00+00 4.00+00 6.00+00 8.00+00 1.00+01 8.60 1.204 8'8 "

COREHEIGHT(FEET) ,0 9.20 1.181 9.40 1.177 9.60 1.180 9.80 1.186 10.00 1.193 10.20 1.198 mm.____ _ _ __._ _ . _ . . _ . _ _ _ .

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I FIGURE 4 - N(Z) FUNCTION FOR NIC8 AT 2893 MW FROM 5000 to 7000 MWO/MTU BURNUP TOP AND BOTTON 15 PERCENT. EXCLUDED AS PER TECH SiEC 4.2.2.2.G ,

s HEIGHT N(Z)-

(FEET) 1.80 1.173' ;

2.00- 1.167 2.20 1.161- i 2.40 1.153 2.60. 1.146 3 2.80 1.140 '

3.00- 1,134 3.20 1.130 3.40 1.124 3.60 1.119 1.21+00 3.80 1.1150

/ 4.00 1.114 j' T 4.20 1.117 4.40 1.119

= 1.18+00 [ / 4.60 1.120 J

4.80' 1.117

$ / ( / 5.00 1.116 t / \/ 5.20 1.119 d

/ V 5.40- 1.130

1

U+00 \ / 5.60 5.80 1.142 3

[ 1.154 E 6.00 1.164

( I 6.20

"' 1.172 6.40 1.179 d 1.15+00' f 6.60 1.184 8

W

\ / 6.80 1.187

\ / 7.00 1.191 E g 7.20 1.195 I

U+00 \ 7.40 1.200 7.60

\\O/ l 7.80 8.00 8.20 1.205 1.208 1.210 1.210 1.11+00 8.40 1.208 8.60 1.204 0.00+00 2.00+00 4.00+00 6.00+00 8.00+00 1.00+01 8.80 1.198 COREHEIGHT(FEET) 9.00 1.188 9.20 1.181 9.40 1.177 9.60 1.180 9.80 1.186 10.00 1.193 10.20 1.198

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FIGlRE 5 - N(Z) FUNCTION FOR NIC8 AT 2893 MW i FROM.7000 to 15600 MWD /MTU BURNUP TOP A W BOTTOM 15 PERCENT EXCLUDED' AS PER TECH SPEC 4.2.2.2.G HEIGHT' .N(Z)- ..

(FEET) 1.80' .1.173 ;

2.00 1.'167 '

.I 2.20 1.160 -)

2.40 .1.153 j 2.60 l'.146 2.80 1.140 3.00 1.132 1.28+0D 3.20- 1.130 3.40 1.132 3.60 1.138 I I

A 3.80 1.140' 4.00 1.142 N 4.20' 1.141-1.24+00 (- 4.40 1.139 ;

oe. 4.60 .1.136 5 ! 4.80 1.135 g 5.00

) 5.20 1.141 1.158 g 5.40- 1.183

=

= 1.20+0D 5.60 1.202 .

5.80 1.216 !

/ 6.00 1.231 5 6.20 1.240 t

" '6.40 1.250 g 6.60 1.256 W \ 6.80 1.262 g 1.1E+00 \ 7.00 1.264 7.20 l'.265 7.40 1.263 7.60 1.260 V 7.80 1.255 8.00 1.249 1.12+00 8.20 1.242- :

8.40 1.234 0.00+00 2.00+00 4.00+00 6.00+00 8.00+00 1.00+01 8.60 1.224 COREHEIGHT(FEET) 8.80 1.213 9.00 1.197 9.20 1.185 9.40 1.178 9.60 1.180 9.80- 1.185 10.00 1.193 10.20 1.197-

- _ _ _ - _ _ = _ - -

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FIGURE 6 - N(Z) FUNCTION FOR N1C8 AT 2893 MW l~ FROM 15600 MWO/MTU BURNUP TO EOL 1 TOP A W BOTTOM 15 PERCENT EXCLUDED- ;

AS PER TECH SPEC'4.2.2.2.G HEIGHT N(Z)-

(FEET) 1.80 1.166.

2.00 1.157 2.20 1.148 2.40 1.141 2.60 1.132 2.80 1.128 .

3.00 1.126 1' . 2 8 + 0 0 3.20 1.129- l 3.40 1.133 '

3.60 1.138 '

A 3.80 1.140 ,

4.00 .1.142 N 4.20 1.142 1 3,g .; \ 4.40.

4.60 1.139 1.136_ <

w [- 4.80 1.135 g / 5.00 1.141 .

- 5.20 1.158 j g 5.40 1.183 .,

=

5.60 ' 1.202

= 1.20+00 5.80 1.216 l

6.00 1.231

=

6.20 1.240 s

6.40 1.250 g \/ 6.60 1.256 g V 6.80 1.262 ;

o

1.16+00 \' 7.00 1.264 7.20 1.265 k 7.40 1.263

\ ,s 7.60 1.260

\ / N/ 7.80 1.255

(/ 8.00- .1.249 1.12+00 8.20 1.242 8.40- 1.23( '

O.0C+00 2.00+00 4.00+00 6.00+00 8.00+00 1.00+01 .8.60 1.225 .;

COREHEIGHT(FEET) 8.80 1.213

. 9.00 1.198 9.20 1.185 9.40 1.171 9.60 1.167 9.80 1.170-10.00 1.177 10.20 ~1.181

t FIGlRE 7 - AXIAL FLUX DIFFERENCE LIMITS

AS A FUNCTION.0F RATED THERMAL POWER FROM 0 MWD /MTU BLRNUP. TO EOC FOR NORiH AcNA UNIT 1 CYCLE 8 i

l 1.20102 -

f 1.00+02 (.12.103) (+; 100 l

=

= ,

/ \ s

I.00+01 / (

ilnacceptable 3 -

/ \- Operation 5 , Accepta )l.e \

, 6.00+01 w

i Om sti an

\ j 5 / \

w

\

4.00t01 (-2 7,50) (+2 ),50)

E .

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5

2.00+01 i

- 1, j

0.00f00

-5.00+01 -3.00+01 -1.00+01 .1.00+01 3.00+01 5.00+0i PERCENTFLUXDIFFERENCE(DELTA-1) i

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ML20245C493

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