ML20216A897
| ML20216A897 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 05/06/1998 |
| From: | VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | |
| Shared Package | |
| ML20216A886 | List: |
| References | |
| NUDOCS 9805140294 | |
| Download: ML20216A897 (9) | |
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CORE OPERATING LIMITS REPORT (COLR)
NORTH ANNA UNIT 2 CYCLE 13 PATTERN UD 1
i Virginia Electric and Power Company
- Page 1 9805140294 980506 POR ADOCK 05000339 P PDR
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l N2C13 CORE OPERATING LIMITS REPORT 1
1.0 INTRODUCTION
The Core Operating Limits Report (COLR) for North Anna Unit 2 l Cycle 13 has been prepared in accordance with Technical Specification 6.9.1.7 The Technical Specifications af fected by i this report are listed below. ,
j 3/4.1.1.4 Moderator Temperature Coefficient l' 3/4.1.3.5 Shutdown Bank Insertion Limit 3/4.1.3.6 Control Bank Insertion Limits Axial Flux Difference ;
3/4.2.1 3/4.2.2 Heat Flux Hot Channel Factor !
3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor and ,
Power Factor Multiplier i
The cycle-specific parameter limits for North Anna 2 Cycle 13 for the specifications listed above are provided on the following pages, and were developed using the NRC-approved methodologies specified in Technical Specification 6.9.1.7.
l N2C13/UD COLR Rev 0, April 1998 Page 2
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2.0 OPERATING LIMITS 1
2.1 Moderator Temperature Coefficient (Specification 3/4.1.1.4) 2.1.1 The moderator temperature coefficient (MTC) limits are:
The BOC/ARO-MTC shall be less positive than or equal to
+0.6E-4 Ak/k/ F below 70 percent of RATED THERMAL POWER.
The BOC/ARO-MTC shall be less positive than or equal to 0 ;
(zero) Ak/k/0 F at or above 70 percent of RATED THERMAL i POWER. j l
The EOC/ARO/RTP-MTC shall be less negative than -S.0E-4 j Ak/k/ F.
2.1.2 The MTC surveillance limits are:
i 1
! The 300 ppm /ARO/RTP-MTC should be less negative than or l equal to -4.0E-4 Ak/k/ F. l The 60 ppm /ARO/RTP-MTC should be less negative than or equal to -4.7E-04 Ak/k/ F.
where: BOC - Beginning of Cycle ARO - All Rods Out i EOC - End of Cycle RTP - RATED THERMAL POWER l
l 2.2 Shutdown Bank Insertion Limit (Specification 3/4.1.3.5) 2.2.1 The shutdown rods shall be withdrawn to 227 steps.
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! 2.3 Control Bank Insertion Limits (Specification 3/4.1.3.6) l 2.3.1 The control rod banks shall be limited in physical insertion as shown in Figure A-1.
I N2C13/UD COLR Rev 0, April 1998 Page 3 l
4 2.4 Axial Flux Difference (Specification 3/4.2.1) l 2.4.1 The axial flux difference limits are provided in Figure A-2.
2.5 Heat Flux Hot Channel Factor-FQ(z) (Specification 3/4.2.2) 2.5.1 The Fg(z) limits are:
2.19 Fg(z)' 5 ---
- K(z) for P > 0.5 P
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Fg(z) $ 4.38
- K(z) for P $ 0.5 THERMAL POWER where: P = ------------------- , and RATED THERMAL POWER K(z) is provided in Figure A-3 l 2.5.2 The Fg(z) surveillance limits are:
2.19 K(z)-
Fg(z)M $ --- for P > 0.5 P N(z)
K(z)
Fg(z)M $ 4.38 * ---- for P $ 0.5 N(z)
N2C13/UD COLR Rev 0, April 1998 Page 4
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THERMAL POWER where: P = ------------------- ,
RATED THERMAL POWER l
K(z) is provided in Figure A-3, and N(z) is a non-equilibrium multiplier on Fg(z)M to account for power distribution transients during normal l
operation, provided in Table A-1. The top and bottom 15% of l the core is excluded per TS 4.2.2.2.G.
2.6 Nuclear Enthalpy Rise Hot Channel Factor - FAH(N) and Power Factor Multiplier (Specification 3/4.2.3)
FAH(N) 5 1.49*{1 + 0.3*(1 - P))
THERMAL POWER where: P = -------------------
RATED THERMAL POWER l
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i N2C13/UD COLR Rev 0, April 1998 Page 5
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.]_ ~~ I
, _ _ d_._ ..__ . Db.le A-1 I ~ . _ . _ ,_ _
i
__' . _ _ . _ . - . _ -N2C13 NORMAL OPERATION N(z)'s
) I
^
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Height O to 1000 1000 to 3000 3000 to SOOO L5oooio 7oool 7ooo to Sooo Sooo to '7700 i 17700 to EOC Node (feet) _ MWD /MTU { MWD /MTU j MWD /MTU] MWD /MTU ! _ MWD /MTU MWD /MTU i MWD /MTU
_10 . j _10.2 1.159 L1.159 ! 1.159 1.153 ! 1.153 , 1.153_i._1.118_ j 11 1.158 1.158 1.152 1 1.152 1.152 l 1.119 g 10.0 m .1158 1
_12_j 9.8 '
.1.155j _1.155_ _ _1.155_._ 1.150 _ . 1.150 _ j 1.150. _ ! _ 1.125 _
13 [ 9.6 1.155 l 1.155 1.155 1.149 1.149 1.149 1.134 14j 9.4 ! 1.156_.E 1.156_ _ 1.156 1.149_ [. 1.141 15 ._ 9.2, 1 _l.162 ,
_1.162 1.162 1.149 _ 1.153 1.153 [i_ 1_.i149_ _ 1 153_. ! 1.149 16 ! 9.0 1.171 1.171 _ _ 1.171 1.162 __1.162, 1__ 1.162_ _ ( __1.157__
17 ; 8.8 1.181 i 1.181 1.181 1.173 1.173_L 1.173 ! 1.166 _j 1.181 _ _ _1.181_ i 1.180 _ l. 1.177 18 L 8.6 1.188_ 4 1.188_ _ _ 1.1_88._..
1.193 1.193 1.187 1.187_ 1 1.187 1.187 19J 8.4 a 1.193 !
__20 8.2j 1_.197 _._1.197_. _ 1.197 _ 1.193 . 1.193 ; 1.196 . _,_ 1.1_96 _
21 . 8.0 . 1.200 1.200 1.200 1.196 ! 1.196 ! 1.203 1 1.203 22 8 1.203 4 1.205T 1.203 1.198 l 1.198 I 1.209
~
l 1.209
( 1.21 1 1.23 3
[23 1 [7.6 1.205 ] ] 2_05))205 T 11.2057 1.198.
1
_241 74 ; 1.205. ' l _1.205 '
1.197 1.217 _ l. _.1.217 l
25 l 7.2 ' 1.204 1.204 i 1.204 1.194 1.194 I 1.219 1.219
- _26 .a 7.0_ j . 1.200_ [ _1.200 _I'200_ _1.190... _ 1.190 3 55 ] _ 1.218 _ ,
i 1.196 _1.217 ! 1.217
[__27__j _.6.8 J_1.196_;_ 1.196. 4 1.184 __ _ 1.184 L28 .! . 6.6 ; 1.190j 1.190 _ _1.190_ _ ._ 1.177. 1 1.177 1.170, 1_
J 1.214..1.210 ] _1.214_ _.
29 1 6.4a 1.183 1 1.183 1.183 1.170 l 1.210 30 . 1.172 i 1.172 l 1.172 [ 1.162 ! 1.16?. j 1.202 1.202 I.195,_,
31 f' [6.26.0((.l[62 ].1621_1162__[i.ISA 3.15 Q ii.195~.
j
_32 . ( _ 5.8 ! 1.149_j 1.149 ! _1.149 _ ._1d4411.144 L 1.184_ L1.184 33 i 5.6 i 1.135 1 1.135 1.135 1.132 1.132 l 1.173 l 1.173 l 34 K4 _1._122_ j_ 1.122 . [ _1.122_ . _.1.1j9 .a._1.11Q _ 1.156 1.156 35 i 5.2 l 1.111 i 1.111 i 1.111 1.106 l 1.106 i 1.135~ 1.135
~
i.09iT I3i9
~
1.098.. I 1.119 36 I 5.0 i 1.105 _i _ 1.105 ] ] 105 1.113 37 4.8 ! 1.104~i 1.104 1.104 1.096 1.096 ! 1.113 38 4.6 i 1.1 67 1.107 1.107 1.098
~
1.098 '~i
~
1.115 1.115 39 _ 4.d[1.113 i.113 1.113 1.100 1.100 _ 1.118[ _ I.118]
l 1.118 1.118 1.104 _1.121._ __1.121_
_._40 41
_..4.04.2 ] 1.118 1.122 i 1.109
[_1.j04_1.109 _ 1.123 1.123 i
1.122 1 _ 12122
- 42__ _3.8_ _ 1.126 _ 1.126 _ _1.126_. .
1.114 _ __1.114. _ __ 1.124_ 1.124_ ._
1.127 43 3.6 1.131 1.13L 1.131 1.121 1.121 _1.127 _
1.130 44_ 4 .3.4
= 1.136 1.136 _ _ 1.136 _ _ 1.130 _ _1.130.._ L1.j31__j 45 : 3.2 i 1.143 1.143 1.143 1.140 1.140 l 1.140 t 1.138 t
1.149 1.150 1.150 1.150 1.151 l 1.150 46 ~3.0 j 1.149~[ ' l 47 2.8 17.~157 ! 1.157 1.159 1.159 l.159 1.166 i 1.166 I _ 48._.[ 2 [ 3 66 1 1.166 _ _ _1.167_ _._.1d68 1 168 _ _ _1.178 __ 1.178 _
49 1 2.4j 1.175 1.175__L .176 1 1.176 1.176 j 1.191 1 1.191 50 1.184 1.184 1.203 2.2 l _1. 183 _ ._ 1.183 _ ! [_ 1.184_1.191_pj _1.213_ j .1.203_ 1.213 _]
51 2 1.190 1.191 1.191 L .0_(1.190 1.223_ [_1.223 j
_52l 1.8. ! _1.197 j 1.197 [ 1.198 _1.198_.L 1.198 !
N2C13/UD COLR Rev 0, April 1998 Page 6
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Figure A-1 f
Control Rod Bank Insertion Limits 230 Fully Wd position = 227 s:eps 210 200 (l.0,194 C-BAblK 190 180 .. _ . _ .
j
/
170 160 r
' /
150 i
e 140 <
/
l g 130 f /
c' ~ ~ ~ " - i g 120 (0,118; l l
!D-BANK 110 l
8 100 0 /
y e0 a:
80 70 80 50 40 !
30
[ 1 20 7 '
10
/ '
.N8, 0)
O 0.8 0.9 1.0 O.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Fraction of Rated Thermal Power f
N2C13/UD COLR Rev 0, April 1998 Page 7
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, 1 Figure A-2 N2C13 Axial Flux Difference Limits 120 110
(-12, 100) (+E, 100) 100 Unacceptable Operation Unacceptable Operation 80
\
i g / Acceptabe Operation 1 70 -
I s
60 -- - - - -
g l @
is
/
l $ (-27,50l (+20, 50)
- n. j 40 30 20 10 0
30 -20 -10 0 10 20 30 Percent Flux Difference (Delta-1)
N2C13/UD COLR Rev 0, April 1998 Page 8
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Figure A-3 K(Z)- Normalized FQ as a Function of Core Height :
1.2 l
1.1 l
1
,6,1.0) j 1.0 %
N N
0.9 (12, .925)
I l 0.8 N
0.7 O
w N
3 4 0.6 I
I cc i O \
A 0 .5 s
x 4
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l 0.4 0.3 0.2 0.1 0.0 0 1 2 3 4 5 6 7 8 9 10 11 12 CORE HEIGHT (FT)
N2C13/UD COLR Rev 0, April 1998 Page 9