ML20217Q130
| ML20217Q130 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 03/31/1998 |
| From: | SOUTHERN NUCLEAR OPERATING CO. |
| To: | |
| Shared Package | |
| ML20217N604 | List: |
| References | |
| NUDOCS 9804100309 | |
| Download: ML20217Q130 (15) | |
Text
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i l V0GTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 2 CYCLE 7. !
CORE OPERATING LIMITS REPORT i
REVISION 0 March 1998 l- l l-
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l- 1 9804100309 980330 PDR ADOCK 05000425 p PDR ,
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COLR for VEGP UNIT 2 CYCLE 7 l
1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for VEGP UNIT 2 CYCLE 7 has been prepared in accordance with the requirements of Technical Specification 5.6.5.
The Technical Requirement a,ffected by this report is listed below:
13.1.1 SHUTDOWN MARGIN - MODES 1 and 2 The Technical Specifications affected by this report are listed below:
3.1.1 SHUTDOWN MARGIN - MODES 3, 4 and 5 l
3.1.3 Moderator Temperature Coefficient '
3.1.5 Shutdown Bank Insertion Limits 3.1.6 Control Bank Insertion Limits 3.2.1 Heat Flux Hot Channel Factor - F,(Z) i 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor - F$
3.2.3 Axial Flux Difference i
3.9.1 Boron Concentration l
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l PAGE 1 of 14 i
h . ,
l COLR for VEGP UNIT 2 CYCLE 7 l ..
2.0 OPERATING LIMITS The cycle-specific' parameter limits for the specifications listed in Section 1.0 are presented in the following subsections. These limits have been developed using the NRC-approved methodologies specified in Technical Specification 5.6.5.
2.1 SHUTDOWN MARGIN - MODES 1 AND 2 (Technical Requirement 13.1.1) 2.1.1 The SHUTDOWN MARGIN shall be greater than or equal to 1.3% M/k.
2.2 SHUTDOWN MARGIN - MODES 3. 4 AND 5 (Specification 3.1.1) 2.2.1 The SHUTDOWN MARGIN shall be greater than or equal to the limits shown in Figures 1 and 2.
2.3 Moderator Temoerature Coefficient (Specification 3.1.3) 2.3.1 The Moderator Temperature Coefficient (MTC) limits are:
l The BOL/AR0/HZP - MTC shall be less positive than +0.7 x 10-'
&/k/*F for power levels up to 70% RTP with a linear ramp to 0 M/k/*F at 100% RTP.
l The EOL/ARO/RTP-MTC shall be less negative than -5.5 x 10-'
! M/k/'F.*
l l
2.3.2 The MTC Surveillance limits are:
The 300 pps/ARO/RTP-MTC should be less negative than or equal to l -4.75 x 10-' M/k/*F.*
l The 60 ppm /'AR0/RTP-MTC should be less negative than
-5.35 x 10 M/k/'F.*
, 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 l
L 2.4- Shutdown Bank Insertion Limits (Specification 3.1.5) 2.4.1 The shutdown banks shall be withdrawn to a position greater than or equal to 225 steps.
2.5 Control Bank Insertion Limits (Specification 3.1.6) 2.5.1 The control banks shall be limited in physical insertion as shown in i Figure 3.
- Applicable for full-power T-avarage of 586.4*F. ,
j PAGE 2 0F 14
COLR for VEGP UNIT 2 CYCLE 7 2.6 Heat Flux Hot Channel Factor - F o (Z) (Specification 3.2.1) 2.6.1 Fo(Z) -s
- K(Z) for P > 0.5
, P t
I l
p RTP
! Fo (Z) s
- K(Z) for P s 0.5 l 0.5 i
l where: P = THERMAL POWER RATED THERMAL POWER i
l 2.6.2 FRTP - 2.50 2.6.3 K(Z) is provided in Figure 4.
l F
2.6.4 F,(Z) s ,RTP
- K(Z) for P > 0.5 P
- W(Z)
F,(Z) s for P s 0.5 '
0.5
- W(Z) l 2.6.5 W(Z) values are provided in Figures 6 through 9.
2.6.6 The F,(Z) penalty factors are provided in Table 1.
{
PAGE 3 of 14
COLR for VEGP UNIT 2 CYCLE 7 2.7 Nuclear Enthalov Rise Hot Channel Factor - FK (Specification 3.2.2) 2.7.1 FK s F0,TP . () , pp ,(3_p))
where: P = THERMAL POWER RATED THERMAL POWER 2.7.2 Ff,TP - 1.65 2.7.3 P F.,, - 0.3 2.8 Axial Flux Difference (Specification 3.2.3) 2.8.1 The Axial Flux Difference (AFD) Acceptable Operation Limits are provided in Figure 5.
2.9 Boron Concentration (Specification 3.9.1) 2.9.1 The boron concentration shall be greater than or equal to 2002 ppm.#
l 1
- This concentration bounds the condition of k ,, s 0.95 (all rods in less the most l
reactive rod) and subcriticality (all rods out) over the entire cycle. This
- concentration includes additional boron to address uncertainties and B' depletion.
hi\wp\vogtle\COLR97.U2 PAGE 4 of 14
COLR for VEGP UNIT 2 CYCLE 7 TABLE 1 F,(Z) PENALTY FACTOR Cycle F,(Z)
-Burnup Penalty (MWD /MTU) Factor 30 1.027 150 1.027 362 1.029 575 1.029 1211 1.020 1424 1.021 2909 1.046 3334- 1.044 3971 1.037 4395 1.050 4820 1.050 6730 1.020 Notes:
- 1. The Penalty Factor, to be applied to Fo (Z) in accordance with SR 3.2.1.2, is the maximum factor by which Fo (Z) is expected to increase over a 39 EFPD interval (surveillance interval of 31 EFPD plus the maximum allowable extension not to exceed 25% of the surveillance interval per SR 3.0.2) starting from the burnup at which the F,(Z) was determined.
- 2. Linear interpolation is adequate for intermediate cycle burnups.
- 3. For all cycle burnups outside the range of the table, a penalty factor of 1.020 shall be used.
PAGE 5 of 14
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j COLR FOR VEGP UNIT 2 CYCLE 7 1
1 1
5.00 )
I
$ 4.00
$ ACCEPTABLE 8 OPERATING e REGION e
b z (2500,3.1b 5 3.00 m
2 z I 3 (1600,2.25) o h 2.00 I
m
@ UNACCEPTABLE tr s OPERATING 5 (950,1.30) REGION 8 1.00 m
i 0.00 - !
O 500 1000 1500 2000 2500 l mu !
RCS BORON CONCENTRATION (ppm) i l
l.
FIGURE 1 REQUIRED SHUTDOWN MARGIN FOR MODES 3 AND 4 (MODE 4 WITH AT LEAST ONE REACTOR COOLANT PUMP RUNNING) ;
l 1
PAGE 6 of 14 l
i
! COLR FOR VEGP UNIT 2 CYCLE 7 5.00 -
j (2500,4.90) I 1
J
$ 4.00 l
< ACCEPTABLE
- E OPERATING
@ REGION I
E.
E 5 3.00 l
c (1250,2.85) z 3
l 8
y 2.00
)
l 5
@ UNACCEPTABLE l c OPERATING 1 l
g j REGION I w 1.00 m (460,1.00) l l
l 0.00 l 0 500 1000 1500 2000 2500 21 41 l RCS BORON CONCENTRATION (ppm) l FIGURE 2 REQUIRED SHUTDOWN MARGIN FOR MODES 4 AND 5 (MODE 4 WITH NO REACTOR COOLANT PUMPS RUNNING)
PAGE 7 of 14
COLR FOR VEGP UNIT 2 CYCLE 7 (Fully Withdrawn *)
225 #
220 4 28.0 %,225)
/ / (78.0%,225)-
s '
s '
[ BANK B [
180
[
t 160
[(0%,161) ' [ '
(100%,161)
E / /
140
[ct [ BANK C [
E / /
z 120 9 / /
100 t / /
80 I $ [ [ BANK D 60 .
/
f(0%,46)
/
f 40 A
/
20
/ ~
1 (30.2%,0)[
0 20 40 60 80 100 (Fully inserted) "
POWER (percent of rated thermal power) 1
- Fully withdrawn shall be the condaion where control rods are at a position wnhin the interval 2225 and 5231 steps withdrawn. I Note: The Rod Bank Insertion Lirnits are based on the control bank withdrawal sequence A, B C, D and a control bank tip-to-tip distance of 115 steps.
i FIGURE 3 l ROD BANK INSERTION LIMI'S VERSUS % OF RATED THERMAL POWER PAGE 8 of 14
1 COLR FOR VEGP UNIT 2 CYCLE 7 I
1.40 1.20 O
2
- u. 1.00 E
h 0.80 S !
u 1
d 0.60
! 2 l cc FO= 2.50 O
z CORE 0.40 HEIGHT K(Z) g 0.000 1.000 6.000 1.000 12.000 0.925 0.20 i
O O 2.0 4.0 6.0 8.0 10.0 12.0 CORE HEIGHT (ft)
FIGURE 4 K(Z)- NORMALIZED FO (Z) AS A FUNCTION OF CORE HE!GHT PAGE 9 of 14
I COLR FOR VEGP UNIT 2 CYCLE 7 140 120 e (-20,100) (+10,100) y 100 ' '
UNACCEPTABLE UNACCEPTABLE 80
!3 /
f
\ ~
E ) ACCEPTABLE I
60 E f g !
l E, f \
l 5 (-35, 50) (+26, 50)
E o 40 1
. 20 I i
i i
e 1
0
-50 -40 -30 -20 -10 0 10 20 30 40 50 AXIAL FLUX DIFFERENCE (percent AFD)
FIGURE 5 AXML FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER FOR RAOC PAGE 10 of 14
COLR FOR VEGP UNIT 2 CYCLE 7 Axial Elevanon BOL Point (feet) W(z) 1 12.00 1.0000 2 11.80 1.0000 3 11.60 1.0000 4 11.40 1.0000 5 11.20 1.0000
'* 60
- 6 11.00 1.0000
{
- 7 10.80 1.0000 1
- 8 10.60 1.0000 l
- 9 10.40 1.0000 10 10.20 1.0000 11 10.00 1.3090 12 9.80 1.3040 1.50 - - - 13 9.60 1.2970 14 9.40 1.2860 15 9.20 1.2742 16 9.00 1.2598 17 8.80 1.2498 18 8.60 1.2485 19 8.40 1.2479 20 8.20 12450 1,40 21 8.00 1.2392 l 22 7.80 1.2355 i 23 7.60 1.2344 l 24 7.40 1.2298 25 720 1.2232 1
- 26 7.00 1.2147 l N u 27 6.80 12044 l 3: A p 28 6.60 1.1929 1.30 . 29 6.40 1.1809 A A 30 6.20 1.1702 j A & 31 6.00 12049 l A a 32 5.80 1.1930 5.60 g % /
y 33 34 5.40 1.1859 1.1856
& 35 5.20 1.1948 "1'u a [ 36 5.00 1.2052 1.20 aa a 37 4.80 1.2136
& A 38 4.60 1.2213 a 39 4.40 1.2277 40 4.20 1.2328 41 4.00 1.2365 42 3.80 1.2393 43 3.60 1.2417 44 3.40 1.2430 1*10 45 3.20 12439 46 3.00 1.2508 47 2.80 1.2622 48 2.60 1.2747 49 2.40 1.2892 50 2.20 1.3077 51 2.00 1.3268 1.00
- 52 1.80 1.0000 0 2 4 6 8 10 12 53 1.60 1.0000 54 1.40 1.0000 CORE HEIGHT (feet) 55 1.20 1.0000 56 1.00 1.0000 57 0.80 1.0000 58 0.60 1.0000 Th s fgure is referred to by Technical 59 0.40 1.0000 i
Spoofcaten B3.2.1 60 0.20 1.0000 l
- l 61 0.00 1.0000 l
- Top and Bottom 15% Excluded per Technical Spoofcation B3 2.1 FIGURE 6 RAOC W(Z) AT 150 MWD /MTU PAGE 11 Of 14 l
t
, COLR FOR VEGP UNIT 2 CYCLE 7 ,
Axial Elevanon MOL.1 Point (feet) W(z) )
1 12.00 1.0000 i 2 11.80 1.0000 i 3 11.60 1.0000 4 11.40 1.0000 5 11.20 1.0000 1.60 i
- 6 11.00 1.0000 7 10 ,0 1.0000 8 mA 1.0000 9 10.40 1.0000 10 10.20 1.0000 11 10.00 13450 12 9.80 13216 1.50 13 9.60 13022 14 9.40 *2791 15 9.20 1.2549 16 9.00 1.2387 17 8.80 1.236" 18 8.60 1.2412 19 8.40 12427 20 8.20 12461 1.4C 21 8.00 1.2472 22 7.80 1.2448 23 7.60 1.2398 n 24 7.40 1.2322 a 25 7.20 1.2225 C' & 26 7.00 1.2108 i C
A 27 6.80 1.1973 3 1.30
& i 28 6.60 1.1828 29 6.40 1.1692
' 30 620 1.1565 A
l a 31 6.00 1.1697 u A 32 5.80 1.1618 5.60 "a'a a#% 33 34 5.40 1.1583 1.1620 a 35 5.20 1.1717 A " 36 5.00 1.1812 1*20
- 37 4.80 1.1893
- a A J n 38 4.60 1.1%7 .
' A 39 4.40 1.2029 Y"& 40 4.20 1.2077 41 4.00 1.2165 42 3.8u 1 2269 43 3.60 1.2330 44 3.40 12420 1*10 45 3.20 1.2473 ,
! 46 3.00 1.2543 l
47 2.80 1.2672 48 2.60 1.2868 49 2.40 13102 50 2.20 13333 51 2.00 13559 1.00 '
- 52 1.80 1.0000 0 2 4 6 8 10 12
- 53 1.60 1.0000 54 1.40 1.0000 CORE HEIGHT (feet)
- 55' 1.20 1.0000 56 1.00 1.0000 57 0.80 1.0000 58 0.60 1.0000 59 0.40 1.0000 This fgure is referred to by Technical
- Speafcaten B3.2.1 60 0.20 1.0000 61 0.00 1.0000
- Top and Bottom 15% Excluded per Techrucal Spoofcation B3.2.1 FIGURE 7 RAOC W(Z) AT 4000 MWD /MTU PAGE 12 Of 14
COLR FOR VEGP UNIT 2 CYCLE 7 Axial Elevat2on MOL-2 Point (feet) W(z) 1 12.00 1.0000 2 11.80 1.0000 3 11.60 1.0000 4 11.40 1.0000 5 11.20 1.0000 1.60
- 6 11.00 1.0000 7 10.80 1.0000 8 10.60 1.0000 9 10.40 1.0000 10 10.20 1.0000 11 10.00 1.2*/58 12 9.80 1.2566 1.50 * ~, 13 9.60 1.2395 j 14 9.40 1.2328 15 9.20 1.2258 16 9.00 12149 17 8.80 1.1987 18 8.60 1.1894 19 8.40 1.1999 20 8.20 1.2102 1.40 21 8.00 1.2164 22 7.80 1.2241 23 7.60 1.2333 24 7.40 1.2380 25 720 123 %
26 7.00 1.2384 M a 27 6.80 1.2343 3 A 28 6.60 1.2278 1.30 . 29 6.40 1.2190 g 30 6.20 1.2083 a
', a 31 32 6.00 5.80 1.1954 1.1836 33 5.60 1.1813 g e%A A A' 34 5.40 1.1927 A 35 5.2') 1.2043 i a % " 36 5.00 1.2143 1.20 g n g (- 37 38 4.80 4.60 1.2229 1.2299 39 4.40 1.2352 40 4.20 1.2389 41 4.00 1.2406 42 3.80 1.2416 43 3.60 1.2425 44 3.40 1.2431 1.10 45 3.20 1.2445 46 3.00 12530 47 2.80 1.2671 48 2.60 1.2821 49 2.40 1.2%1 50 2.20 1.3096 51 2.00 1.3126 1.00 52 1.80 1.0000 0 2 4 6 8 10 12
- 53 1.60 1.0000 54 1.40 1.0000 CORE HEIGHT (feet) 55 120 1.0000 56 1.00 1.0000 57 0.80 1.0000 58 0.60 1.0000 This fqure is referred to by Tecnical 59 0.40 1.0000 Speafcaton B3.2.1 60 0.20 1.0000 61 0.00 1.0000 l
- Top and Bottorn 15% Excluded per Technical Speofcation B3.2.1 FIG'JRE 8 RAOC W(Z) AT 11000 MWD /MTU PAGE 13 Of 14 l
L_
a .
.. Axial Elevanon EOL Point (feet) W(z) 1 1200 1.0000 2 11.80 1.0000 3 11.60 1.0000 4 11.40 1.0000 5 11.20 1.0000 1.60 i
- 6 11.00 1.0000 7 10.80 1.0000 8 10.60 1.0000 !
9 10.40 1.0000 10 10.20 1.0000 11 10.00 1.2238 12 9.80 1.2214 1.50 13 9.60 1.2215 14 9.40 1.2164 15 9.20 1.2101 16 9.00 1.2128 17 8.80 1.2177 18 8.60 1.2192 19 8.40 1.2273 20 P20 1.2495 1.40 21 8.00 1.2708 22 7.80 1.2867 23 7.60 1.2993 24 7.40 13081 25 7.20 13133
- 26 7.00 13151 N
- 27 6.80 13137 3 1.30 ,
/\ -
28 29 6.60 6.40 13092 13020 A
i
& ,AMp o 30 31 6.20 6.00 1.2940 1.2851 i a a*
N -
32 33 5.80 5.60 1.2760 1.2690 l i
i
" 34 5.40 1.2657 l M 35 5.20 1.2707 l %*A i 36 5.00 1.2767 1.20 37 4.80 1.2799 l
38 4.60 1.2809 l 39 4.40 1.2792 40 4.20 1.2751 I 4.00 41 1.2683 42 3.80 1.2614 43 3.60 1.2552 44 3.40 1.2465 1*10 45 3.20 1.2356 46 3.00 1.2354 47 2.80 1.2448 48 2.60 1.2562 49 2.40 1.2680 50 2.20 1.2796 51 2.00 1.2911 l 1.00 .. 52 1.80 1.0000 0 2 4 6 8 10 12 53 1.60 1.0000 54 1.40 1.0000 55 1.20 1.0000 CORE HEIGHT (feet)
- 56 1.00 1.0000 57 0.80 1.0000 58 0.60 1.0000 59 0.40 1.0000 This figure is referred to by Te<:hnical
- 60 0.20 1.0000 Spoofcaten B3.2.1
- 61 0.00 1.0000
- Top and Bottom 15% Excluded per Techrucal Spoofcanon B3.2.1 FIGURE 9 RAOC W(Z) AT 19000 MWD /MTU PAGE 14 Of 14