ML20245C493

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Cycle 8 Relaxed Power Distribution Control Pattern - Core Surveillance Rept
ML20245C493
Person / Time
Site: North Anna Dominion icon.png
Issue date: 06/05/1989
From:
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML20245C394 List:
References
NUDOCS 8906260207
Download: ML20245C493 (9)
v • d • e


Text

7 NORTH ANNA 1 CYCLE 8 RPDC PATTERN AN CORE SURVEILLANCE 1

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1 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 3

6.9.1.7 of the North Anna Unit.1 Technical Specifications.

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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.

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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 d

5.00 1.117 5.20.

1.109 E. 18+00

(

5.40 1.104 5.60 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 1.139 7.40 1.143 7.60 1.147 1.10 M 0.

\\

7.80 1.150 N/

8.00 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'

4.80-1.122 a

i A

5.00 1.116

/

\\

5.20 1.118 C

)

/

/

5.40 1.130 E'

(

j

/

5.60 1.141

= 1.18+00

\\

/

\\/

5.80 1.154 E

f v

6.00 1.164 E

[

6.20 1.172 3

6.40 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 COREHEIGHT(FEET) 8;8 lg 8

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~

3.60 1.119 1.2t+00 3.80 1.115

/ \\

4.00.

1.114

/

\\

4.20 1.117 4.40 1.119

[-

4.60 1.120 3,jg,go 5

4.80 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

"; 1
  • 1 H00

\\

/

6.40 1.179 3

6.60 1.184 f

5 6.80 1.187 5

7.00 1.191 h

/

7.20 1.195

~

1.13+00

\\

/

7.40 1.200

\\

l 7.60 1.205 7.80 1.208 vv i:!!

1.1t+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 8'8 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.____

]

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 j' T

/

4.00 1.114 4.20 1.117 4.40 1.119

[

/

4.60 1.120

= 1.18+00 J

4.80' 1.117

/

( /

5.00 1.116 t

/

\\/

5.20 1.119

/

V 5.40-1.130 d

1

  • U+00

\\

/

5.60 1.142

[

5.80 1.154 3

E

(

6.00 1.164 I

6.20 1.172 f

6.40 1.179 d 1.15+00' 6.60 1.184 8

\\

/

6.80 1.187 W

\\

/

7.00 1.191 E

g 7.20 1.195 I

  • U+00

\\

7.40 1.200 7.60 1.205

\\

l 7.80 1.208 8.00 1.210

\\O/

8.20 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

l 1

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l 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 1.141 5.20 1.158 g

5.40-1.183

=

5.60 1.202

= 1.20+0D 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-

- _ _ _ - _ _ = _ - -

=i i

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.

1.139 4.60 1.136_

[-

4.80 1.135 wg

/

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

=

6.40 1.250 s

g

\\/

6.60 1.256 g

V 6.80 1.262 1.16+00

\\

7.00 1.264 o*

7.20 1.265 k

7.40 1.263

\\

7.60 1.260

,s

\\

/

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

\\

\\

Om sti an

, 6.00+01 w

i j

5

/

\\

\\

w 4.00t01

(-2 7,50)

(+2 ),50)

E U

l 5

i

  • 2.00+01 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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