ML20216E572
| ML20216E572 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 09/30/1997 |
| From: | Brozak D, Choe W, Maier S TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML20216E570 | List: |
| References | |
| RXE-96-001, RXE-96-1, NUDOCS 9709100238 | |
| Download: ML20216E572 (13) | |
Text
_ _ _ _ _.
RXE-96-001,-Rev. 3 CPSES UNIT 2 CYCLE 3 CORE OPERATING LIMITS REPORT September 1997 l
9 4fN Prepared: -
M Date:
/
Daniel E. Brosak Reactor Physics Approved:
b' N
9!f/97 Date:
Stephen M. Maier Reactor Physics Supervisor k!I!I7 Approved:
e Dater wh.e o. C e
Safety Analysis Manager 9709100238-970903 "
PDR ADOCK 05G00446 P
pg
DISCLAIMER j
The information contained in this report was prepsred for the specific ruquirement of Texas Utilities Electric Company (TUEC),
and may not be appropriate for use in situations other than those for which it was specifically prepared.
TUEC PROVIDES NO WARRANTY HEREUNDER, EXPRESS OR IMPLIED, OR STATUTORY, OF ANY KIND I
OR NATURE WHATSOEVER, REGARDING THIS REPORT OR ITS USE, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES ON MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
By making this report available, TUEC does not authorize its use by others, and any such use is forbidden except with the prior written approval of TUEC.
Any such written approval shall itself be deemed to incorporate the disclaimers of liability and disclaimers of warranties provided herein.
In no event shall TUEC have any liability for any incidental or consequential damages of 'any type in connection with the use, authorized or unauthorized, of this report or of the information in it.
1 i
4 4
11
+
COLR for CPSES Unit 2 Cyclo 3 TABLE OF CONTENTS DISCLAIMER 11 TABLE OF CONTENTS
.......................................... iii LIST OF FIGURES iv SECTION 1.0 CORE OPERATING LIMITS REPORT 1
2.0 OPERATING LIMITS 2
2.1 MODERATOR TEMPERATURE COEFFICIENT 2
2.2 SHUTDOWN ROD INSERTION LIMIT 3
2.3 CONTROL ROD INSERTIch' LIMITS 3
2.4 AXIAL FLUX DIFFERENCE 3
2.5 HEAT FLUX HOT CHANNEL FACTOR 4
2.6 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR 5
2.7
.9HUTDOWN MARGIN 5
9 k
lii
_U
COLR for CPSES Unit 2 Cyclo 3 LIST OF FIGURES FIGURE PAGE 1
ROD BANK INSERTION LIMITS VERSUS THERMAL POWER 6
2 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER 7
i 3
K(Z) - NORMALIZED P (Z) AS A FUNCTION OF g
CORE HEIGHT 8
4 W(Z) AS A FUNCTION OF CORE HEIGHT -
lRev.
(19000 MWD /MTU - EOL) 9 3
l l
l t
iv c
COLR for CPSES Unit 2 Cyclo 3 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for CPSES UNIT 2 CYCLE 3 has been prepared to satisfy the requirements of Technical Specification 6.9.1.6.
The Technical Specifications affected by this report are listed below:
I 3/4.1.1.1 Shutdown Margin - T, Greater Than 200*F 3/4.1.1.2 Shutdown Margin - T,,, Less Than or Equal to 200*F 3/4.1.1.3 Moderator Temperature Coefficient 3/4.1.2.2 Flow Paths - Operating-3/4.1.2.4 Charging Pumps - Operating 3/4.1.2.6 Borated Water Sources - Operating 3/4.1.3.5 Shutdown Rod Insertion Limit 3/4.1.3.6 Control Rod Insertion Limits 3/4.2.1 Axial Flux Difference 3/4.2.2 Heat Flux Hot Channel Factor 3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor 1
COLR for CPSES Unit 2 Cyclo 3 2.0 OPERATING LIMITS The cycle-specific parameter limits for the specifications listed in Section 1.0 are presented in the following subsections.
These I
limits have been developed using the NRC-approved methodologies specified in Technical Specification 6.9.1.6b, Items 5, 6,
7, 8,
9, 10, 11, 12, 13, 14, 15, 16, 17, and 19.
These limits have been determined such that all applicable limits of the safety l
analysis are met.
2.1 Moderator Temoerature Coefficient (Specification 3/4.1.1.3) 2.1.1 The Moderator Temperature coefficient (MTC) limits are The BOL/ARO/HZP-MTC shall be less positive than
+5 pcm/ F.
The EOL/ARO/RTP-MTC shall be less negative than
-4 0 pcm/ F.
2.1.2 The MTC surveillance limit is:
The 300 ppm /ARO/RTP-MTC should be less negative than or equal to -31 pcm/ F.
i where BOL stands for Beginning of Cycle Life ARO stands for All Rods Out HZP stands for Hot Zero THERMAL POWER EOL stands for End of Cycle Life RTP stands for RATED THERMAL POWER 2
L.
a
COLF. for CPSES Unit 2 Cyclo 3 2.2 Shutdown Rod Insertion Limit (Specification 3/4.1.3.5) 2.2.1 The shutdown rods shall be fully withdrawn.
Fully withdrawn shall be the condition where shutdown rods are at a position within the interval of 222 and 231 steps withdrawn, inclusive.
2.3. Control Rod Insertion Limits (Specification 3/4.1.3.6) 2.3.1 The control banks shall be limited in physical j
insertion as shown in Figure 1.
2.4 Axial Flux Difference (Specification 3/4.2.1) 2.4.1 The AXIAL FLUX DIFFERENCE (AFD) target band is.+5%, -12% at 100% RTP linearly expanding to +20%, -17% at 50% RTP.
Rev. 3 Below 50% RTP, the AFD target band remains constant at +20%, -17%.
2.4.2,
The AFD Acceptable Operation Limits are provided in Fi ure 2.
b 3
l
COLR for CPSES Unit 2 Cyclo 3 2.5 Heat Flux Hot Channel Pactor (Specification 3/4.2.2)
F,(Z) s (K(Z)] for P > 0.5 P
F,(Z) 1
[K(Z)] for P s 0.5 0.5 where P=
THERMAL POWER RATED THERMAL POWER 2.5.1 F m = 2.40 Rev. 1 g
2.5.2 K(Z) is provided in Figure 3.
2.5.3 Maximum elevation dependent W(Z) values are given in Figure 4 valid for a burnup Rev. 3 range of 19000 MWD /MTU through EOL.
2.5.4 A constant 2% decrease in F, margin allowance shall be used to increase F e(Z) for compliance g
with the 4.2.2.2.f Surveillance Requirement for all cycle burnups.
O 4
_ __g
=
COLR for CPSES Unit 2 Cyclo 3 2.6 Nuclear Enthalov Rise Hot Channel Factor (Specification 3/4.2.3)
F"a s
F"a [1 + PFa (1-P)]
where P=
THERMAL POWER RATED THERMAL POWER 2.6.1 F"a =
1.55 l
2.6.2 PF, 0.3
=
2.7 Shutdown Marcin 2.7.1 Shutdown Maroin - T _ Greater Than 200'F (Specifications 3 /4'.'i.1.1, 3/4.1.2.2, 3/4.1.2.4, and 3/4.1.2.6)
The SHUTDOWN MARGIN shall be greater than or equal to 1.3% Ak/k in MODES 1, 2, 3, and 4.
2.7.2 Shutdown Marcin - T__ Less Than or Eaus1 to 200'F (Specification 3/4.1.1.2)
The SHUTDOWN MARGIN shall be greater than or equal to 1.3% Ak/k in MODE 5.
5
__j
COLR for CPSES UNIT 2 CYCLE 3 FIGURE 1 ROD BANK INSERTION LIMITS VERSUS THERMAL POWER 240 i
l (17.1,222)
(73.1,222) 220
/
/
/
/
ri
/
/
200 BANK B j
r i
1
-" ( 0,18 7 )
>r',r e 180 r
p f
i
'd
/
}_
A
/t M 160
/ii (100, 16 f
)
f if a
/
A r
E 140 I' '
e
/
/
u
/
BANK C
/
A
/
/'
120 g
/
6/
O
/
/
H
/
/
H
/\\
/: I H 100 f
,f
/
/
m
/
1
/
80 fi i
/ i Mh=>
da O
/
O
/
N-
/
40
,f V
fi 20 f
IIl V
(21,0), /!
O O
10 20 30 40 50 60 70 80 90 100 PERCENT OF RATED THERMAL POWER NOTES:
1.
Fully withdrawn shall be the condition where control rods are at a position within the interval of 222 and 231 steps withdrawn, inclusive.
2.
Control Bank A shall be fully withdrawn.
l l
l
COLR for CPSES UNIT 2 CYCLE 3 FIGURE 2 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER 100 r
i_
(-16,90)
(9,90) l 90
_ UNACCEPTABLE __
j 3
\\
UNACCEPTABLE OPERATION t
OPERATION
_ 1 1 1
\\
t i
t i
I l
\\
l I
i 80 f
y
/
\\
/.
\\
/
\\
k 70 j
g fd ACCEPTABLE j
g f
j OPERATION g
I 1 I 1
\\
fl i i i A
60 g
y
/
\\
/
t I
\\
II f,,
h 50
(.34,50)
(33,50)-
i E4 k.
O 40 a
g 30 20 i
T 10 0
-40
-30
-20
-10 0
10 20 30 40 DEVIATION FROM TARGET AXIAL FLUX DIFFERENCE (%)
7
~
)
COLR fcr CPSES UNIT 2 CYCLE 3 FIGURE 3 K(Z)
NORMALIZED FQ(Z) AS A FUNCTION OF CORE HEIGHT 1.1 l
( 0,.,0,,1., 0 )
( 6,.,0, ~1,. 0, )
3 I
l
- lii, 0.9 (12.0,0.925).
0.8 I
w O
- k. 0.7 O
l N 0.6
)
l 0.5 O
Ri O.4 I
w 0.3 0.2 0.1 0
9 0
1 2
3 4
5 6
7 8
9 10 11 12 CORE HEIGHT (FEET)
BOTTOM TOP Axial Axial Axial Axial Node K(Z)
Node K(Z)
Node K(Z)
Node K(Z) 1 - 31 1.0000 39 0.9800 47 0.9600 55 0.9400 32 0.9975 40 0.9775 48 0.9575 56 0.9375 33 0.9950 41 0.9750 49 0.9550 57 0.9350 34 0.9925 42 0.9725 50 0.9525 58 0.9325 35 0.9900 43 0.9700 51 0.9500 59 0.9300 36 0.9875 44 0.9675 52 0.9475 60 0.9275 37 0.9850 45 0.9650 53 0.9450 61 0.9250 38 0.9825 46 0.9625 54 0.9425 Core Height (ft) = (Node - 1)
- 0.2 8
C*LR fcr CPSES Unit 2 Cyclo 3 FIGURE 4 W(Z) AS A FUNCTION OF CORE HEIGHT (19000 MWD /NTU - EOL) 1.3 1.25 l
l l
T f
1.2 U
\\
\\\\
1.15
\\
X N
r
\\_/
\\
\\
\\_/
)
1.05 1
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 CORE HEIGHT (FEET)
Axial Axial Axial Axial Node W(Z)
Node' W(Z)
Node W(Z)
Node W(Z) 21 1.146 32 1.113 43 1.128 1 - 10 e
11 1.231 22 1.148 33 1.111 44 1.122 12 1.223 23 1.148 34 1.112 45 1.114 13 1.215 24 1.146 35 1.116 46 1.103 14 1.205 25 1.143 36 1.121 47 1.094
)
15 1.195 26 1.139 37 1.125 48 1.090 g
~
16 1.185 27 1.135 38 1.128 49 1.091 17 1.174 28 1.132 39 1.130 50 1.097 18 1.162 29 1.128 40 1.131 51 1.104 19 1.153
'30 1.124 41 1.132 52 - 61 20 1.147 31 1.118 42 1.131 (Node - 1)
- 0.2 Core Height (ft) e 9
Rev. 3