ML20012E015
| ML20012E015 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 03/22/1990 |
| From: | GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20012E012 | List: |
| References | |
| NUDOCS 9003290217 | |
| Download: ML20012E015 (10) | |
Text
o ci i
ENCLOSURE 4 FOR UNIT 2 L
l-i-
)
V0GTLE ELECTRIC GENERATING PLANT (VEGP) UNIT 2 CYCLE 1 CORE OPERATING LIMITS REPORT l
l 9003290217 900322 PDR ADOCK 05000424
- . P -
PDC l-l 1
l
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d
' b i
i COLk for VEGP UNIT 2 CYCLE 1 i
1.0 CORE OPERATING LIMITS REPORT i
This Core Operating Limits Report (COLR) for VEGP UNIT 2 CYCLE 1 has been prepared in accordance with the requirements of Technical Specification 6.8.1.6 The Technical Specifications affected by this report are listed below:
3/4.1.1.1 SHUTDOWN MARGIN - MODES 1 and 2 3/4.1.1.2 SHUTDOWN MARGIN - MODES 3, 4 and 5 j
3/4.1.1.3 Moderator Temperature Coefficient 3/4.1.3.5 Shutdown Rod Insertion Limit 1
3/4.1.3.6 Control Rod Insertion Limits 3/4.2.1 Axial Flux Difference 1
3/4.2.2 Heat Flux Hot Channel Factor - F (Z) i Q
N 3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor - FAH t
i i
b
(
1 i
L
-m
-n
's e
w
l'f _: + ;
1 7 w m
s y'
4
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l COLR for VEGP UNIT 2 CYCLE 1 2.0 OPERATING 141111 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 6.8.1.6 L2.1 SHUTDOWN MARGIN - MODES 1 A@_2_(Specification 3/4.1.1.1) 2.1.1 The SHUTDOWN MARGIN shall be greater than or equal to 1.3% A k/k.
2.2-SHUTDOWN MARGIN - MODES 3. 4 AND 5 (Specification 3/4.1.1.2)
. 2.2.1 The SHt)TDOWN MARGIN shall be greater than or equal to the limits shown in Figures 1 and 2.
2.3 Moderator Temoerature Coefficient (Specification 3/4.1.1.3) 2.3.1 The-Moderator Temperature coefficient (MTC) limits are:
The BOL/AR0/HZP - MTC shall be less positive than oak /kOF.
iiie' E0L/AR0/RTP-MTC shall be less negative than -4.0 x 10-4 6 k/k/0F, L
l 2.3.2-The MTC Surveillance limit is:
e The 300 ppm /AR0/RTP-MTC should be less negative than or equal to
-3.1 x 10-4 A k/k/0F.
L where:
BOL stands for Beginning of Cycle Life L
ARO stands for All Rods Out L
HZP stands for Hot Zero THERMAL POWER E0L stands for End of Cycle Life RTP stands for RATE 0' THERMAL POWER L
l:
t..
l
+-----.
m s
mm -
.n i
yt j
i COLR for VEGP UNIT 2-CYCLE 1 2 ^. 4 Shutdown Rod Insertion Limit (Specification 3/4.1.3.5) 2.4.1 The shutdown rods.shall be withdrawn to a position greater than or equal to 222 steps.
2.5 Control Rod Insertion Limits (Specification 3/4.1.3.6) 2.5.1 The control rod banks shall be limited in physical insertion as shown in Figure 3.
t 2.6 Axial Flux Difference (Specification 3/4.2.1) i (CAOC methodology) 2.6.1 The AXIAL FLUX DIFFERENCE (AFD) target band is +5%, -5% for core average accumulated burnup <3000' MWD /MTV.
2.6.2 The AFD target band is +3%, -12% for core average accumulated burnup >3000 MWD /MTV.
where: MWD /MTV stands for megawatt days / metric ton of initial uranium metal.
2.6.3
.The AFD Acceptable Operation Limits are provided in Figure 4.
j l
L 2.7 Heat Flux Hot Channel Factor - Fg(Z) (Specification 3/4.2.2)
(Fxy methodology)
RTP-l-
FQ F (Z) s
- K(Z) for P > 0.5 2.7.1 Q
P RTP F (Z) s
- K(Z) for P s 0.5 Q
0.5 l
THERMAL POWER L
where: P
=
RATED THERMAL POWER RTP 2.7.2 FQ 2.30
=
l'
b; 9 4:
i k
COLR for VEGP UNIT 2 CYCLE 1 2.7~3 K(Z) is provided in Figure 5.
L' RTP Fxy - Fxy * (1 + PFxy * (1-P))
RTP-
2.7.4 where
1.
Fxy is less than or equal to 1.71 for all core planes containing Bank."D" control rods 2'.
For all unrodded core planes:
l-L RTP Fxy is-less than or equal to 1.54 for core elevations up to and including 5.5 ft.
l L
RTP l
Fyy is less than or equal to 1.62 for core p
elevations above 5.5 ft.
1 9
2.7.5 PFxy - 0.2
{
1 2.8 Nuclear Enthalov Rise Hot Channel Factor - FfH (Specification 3/4.2.3) i l
l-RTP i
l 2.8.1 FjHsF6H * (1 + PFA H * (1-P))
where:
P THERMAL POWER RATED THERMAL POWER RTP 2.8.2 F3H 1.55
=
l 2.8.3 PFAH 0.3
=
i l
.* L p
l-i
. UNIT 2 l.
5.00 i
I l
4.00 l
ACCEPTABLE OPERATING y
REGION 32 n
(2500,3.0) 8.
i d
3.00
'n f
l
~
REQUIRED O
h tr SHUTDOWN j
MARGIN
.h l
z e
3 2.00 5
ACCEPTABl..E 5
OPERATING REGION q
,1.3) 1.00 0.00 0
400' 800 1200 1600 2000 2400 RCS BORON CONCENTRATION (ppm) i FIGURE 1 UNIT 2 REQUIRED SHUTDOWN MARGIN FOR MODES 3 AND 4 (MODE 4 WITH AT LEAST ONE REACTOR COOLANT PUMP RUNNING)
..=
~
.y UNIT 2 7.00 6.00 ACCEPTABLE OPERATING I
(2500,5.0) 5.00 2
REQUIRED
.12 SHUTDOWN y
MA N
g
~
4.00 z
w a
- 5i' Z
3.00 o
3 UNACCEPATABLE cz-OPERATING F
U S
REGION m
v) 2.00 Q
m m
1.00 (450,1.0) 0.00 0
400 800 1200 1600 2000 2400 RCS BORON CONCENTRATION (ppm)
FIGURE 2 UNIT 2 REQUIRED SHUTDOWN MARGIN FOR MODE.5 (MODE 4 WITH NO REACTOR COOLANT PUMPS RUNNING)
c
=
COLR FOR VEGP UNIT 2 CYCLE 1 i
- r-p-7q 200,
I.- B
/
180 g
E/
/
E
@ 160 l (0,161)
/
M 140 L
/
/
E
- u
/
/
E y
E
/
/
E 100 g
E
/
/
E l*lE
[
[
BANK D l
E
/
/
E 60 g
B/
/.
B
[(0,46)
[
f l
E
/
B 20 2
B
/
E o bem$Yd$$dmummmmmmmmanummmmmmmmmmad 0
20 40 60 80 100 RELATIVE POWER (PERCENT)
FIGURE 3 ROD BANK INSERTION LIMITS VERSUS THERMAL POWER
,e m=
COLR.FOR VEGP< UNIT 2 CYCLE 1 140 i
-120-i
-j
.jon UNACCEPTABLE OPERATION i
( 11,90)
(11,90) 80
/
3 a.
'N.
f 1
E l
Ey 60 ACCEPTABLE OPERATION r
O f
n L
=y.
( 31, 50)
(31,50) p-1 40 20 l-l' e
0
=
50
-40
-30
-20
-10 0
10 20 30 40 50~
FLUX DIFFERENCE, Al(percent)
L FIGURE 4 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER
.a.
Q
<g COLR FOR VEGP-. UNIT 2 CYCLE 1 s.-
+;
1.50 1.25-1.00
-mummmmmmmmmmmeunummmmmmmmmmme 7
./ 8 -
0.75
.3x
- e'
,:s.
0.50:
CORE HEIGHT K(Z) 0.000 =
1.000 6.000 1.000 0.25 10.835 0.939 12.000 0.652 0
0 2.0 4.0 6.0 8.0 10.0 12.0 CORE HEIGHT (ft)
FIGURE 5 K(Z) - NORMALIZED F (Z) AS A FUNCTION OF CORE HEIGHT Q
.... _.. -