ML20214L471
| ML20214L471 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 08/28/1986 |
| From: | Tucker H DUKE POWER CO. |
| To: | Harold Denton, Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8609100175 | |
| Download: ML20214L471 (12) | |
Text
.-
Duxe POWER GOMPANY P.O. BOX 33189 CHAmLorrTE, N.C. 28942 HALB. TUCKER run.ernown (704) 07:>4838 August 28, 1986 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Attention:
Mr. B. J. Youngblood, Project Director 4
PWR Project Directorate No. 4
Subject:
Catawba Nuclear Station, Unit 1 Docket No. 50-413 Cycle 2 Reload Peaking Factor Limit Report cycle 2 Reload Safety Evaluation Report
Dear Mr. Denton:
In accordance with my letter dated August 18, 1986, please find enclosed a revised Unit 1 Cycle 2 Reload Peaking Factor Limit Report and an addendum to the original Unit 1 Cycle 2 Reload Safety Evaluation (RSE) Report which was submitted to you per my letter of July 15, 1986.
The original RSE and Peaking Factor Limit Reports covered operation of Catawba Unit 1 Cycle 2 for a Cycle 1 burnup window between 14,000 - 15,250 MWD /MTU. Since Cycle 1 operation was terminated ahead of schedule on August 13, 1986, having achieved 13,650 MWD /MTU, those portions of both reports affected by this change in Cycle 1 operation have been revised as appropriate.
Only two pages (numbers 2 and 11) of the RSE Report were affected. The enclosed addendte is to be attached to the original RSE Report with the areas changed indicated by a bar in the right margin.
The Reloed Peaking Factor Limit Report has been revised in its entirety. The enclosed Peaking Factor Limit Report provides the W(Z) functions that are g be used for RAOC and base load operation during Cycle 2, and the value of APL For i
both RAOC and base load operation, a set of data covering three specific burnup steps is provided which permits the determination of W(Z) at any cycle burnup through the use of three point interpolation. The information for base load operation has been obtained using a + 3 percent AFP about a measured target in the power interval between 80% and 100% of rated thermal power. Figures 1-3 are the j
W(Z) functions appropriate for RAOC operation and Figures 4-6 are the W(Z)
I i
i O
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Mr. Hareld R. Denten, Dir0ctor August 28, 1986 Page Two functions appropriate for base load operation. The appropriate W(Z) function is used to confirm that the heat flux hot channel factor, Fq(Z), will be limited to the values specified in the Technical Specifications.
Very truly yours, en Hal B. Tucker JGT/06/slb Attachments xc:
Dr. J. Nelson Grace, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. Heyward Shealy, Chief Bureau of Radiological Health South Carolina Department of Health &
Environmental Control 2600 Bull Street Columbia, South Carolina 29201 1
INPO Records Center Suite 1500 1100 Circle 75 Parkway Atlanta, Georgia 30339 American Nuclear Insurers e/o Dottie Sherman, ANI Library The Exchange, Suite 245 270 Farmington Avenue l
Farmington, CT 06032 M&M Nuclear Consultants 1221 Avenue of the Americas New York, New York 10020 NRC Resident Inspector Catawba Nuclear Station i
s.
PEAKING FACTOR LIMIT REPORT FOR CATAWBA UNIT 1 CYCLE 2 RAOC AND BASE LOAD OPERATION This Peaking Factor Limit Report is provided in accordance with Paragraph 6.9.1.9 of the Catawba Unit 1 Technical Specifications.
The Catawba Unit 1 Cycle 2 elevation dependent W(z) values for RAOC operation at beginning, middle, and near end-of-life are shown in Figures 1 through 3, respectively. This information is sufficient to determine W(z) versus core height for Cycle 2 burnups in the range of 0 MWD /MTU to 11500 MWD /MTU through the use of three point interpolation.
The Catawba Unit 1 Cycle 2 elevation dependent W(z) values for base load operation between 80% and 100% of rat'ed thermal power with a 3 percent AFQ about a measured target value at 150, 6000, and 11500 MWD /MTU Cycle 2 burnups are shown in Figures 4 through 6, respectively. This information is sufficient to determine W(z) versus core height for Cycle 2 burnups in the range of 0 MWD /MTU to 11500 MWD /MTU through the use of three point interpolation.
The minimum allowable power level for base load operation, APL, for Catawba Unit 1 Cycle 2 is 80 percent of rated thermal power.
The appropriate W(z) function is used to confirm that the heat flux hot channel factor, Fq(z), vill be limited to the Technical Specification values of:
[q(~z) s L.}.2 [K(Z)] for P > 0.50 and P
Fq(z) s 4.64 [K(Z)] for P s 0.50 The appropriate elevation dependent W(z) values, when applied to a power distribution measured under equilibrium conditions, demonstrates that the initial conditions assumed in the LOCA are met, along with the ECCS accep.
tance criteria of 10CFR10.46.
(1),WCAP-10216-P-A, Relaxation of Constant Axial Control - Fq Surveillance Technical Specification 4
j 1
HEIGHT BOL (FEET)
W(Z)
- 0.00 1.000
= 0.20 1.000
- 0.40 1.000 O.40 1.000
- O.80 1.000 1.00 1.000 1.20 1.000 1.40 1.000
{
1.60 1.000 f.80 1.556 2.00 1.539 1.60 2.20
- 1.523 2.40 1.504 2.60 1.485
^
1.55 2.80 1.465 3.00 1.442
.i w
3.20 1.425 3.40 1.420 1.50 3.60 1.416 3.80 1.410 l
4.00 1.401 1
4.20 1.390 l
g*45 I
4.40 1.375 4.60 1.358 m.
4.80 1.339 N-1.40 7L 5.00 1.316 5.20 1.291
=
5.40 1.270 l
5.60 1.253 o
1,35 5.80 1.242 6.00 1.239 I
)
6.20 1.235 2;
N 6.40 1.224
- 1. O 6.60 1.210
' l, 6.80 1.196 7.00 1.181 1.25
(
7.20 1.185 a
7.40 1.148 v
7.60 1.128 Z
7.80 1.107 1.20 8.00 1.083 8.20 1.060 8.40 1.037 8.60 1.023 i
1.15 l
a 8.80 1.021 9.00 1.019 3
9.20 1.013 1.10 9.40 1.005
^
7 9.60 1.001 j
9.80 1.000 10.00 1.000 1.05 10.20 1.001 a
- 10.40 1.000
- 10.60 1.000 m-
- 10.80 1.000
. gg,oo 3,oog 1 _
- 11.20 1.000 O
2 4
6 8
10 12 j
= 11.40 1.000 BOTTOM CORE HEIGHT (FEET)
TOP 11;60 1 000 l
. 33.o 3 ooo l
FIGURE 1 t
Catawba Unit 1 Cycle 2 RAOC W(z) at 150 MWD /MTU i
l j
- Top and Botton 15% Excluded as per Tech Spec 4.2.2.2G 4
HEIGHT MOL (FEET)
W(Z)
- O.00 1.000 a-0.20 1.000
- O.40 1.000
+- 0.60 1.000
- O.80 1.000 1.00 1.000
=
- 1.20 1.000
- 1.40 1.000
- 1.60 1.000 1.80 1.255 1*40 2.00,
1.243 2.20 1.232 2.40 1.220 2.60 1.208 2.80 1.196 1.35 3.00 1.191 3.20 1.193 3.40 1.202 3.60 1.211 3.80 1.217 I*
I 1*30 4.20 1.224 4.40 1,.227 e-
-4 4.60 1.230 37
' 'y 4.80 1.232 5.00 1.231 X
1.25 ir 5.20 1.228
^
5.40 1.231 n
a 1
5.60 1.239 J'
5.80 1.250 6.00 1.263
^
w
X X
6.20 1.273 i
N 1.20 J
L 6.40 1.277 Kw w
I
'lL V' 6.60 1.279 6.80 1.279 7.00 1.279 I
7.20 1.278 l
1.15 7.40 1.275 1
7.60 1.271 l
7.80 1.263 l
8.00 1.252 8.20 1.238 8.40 1.221 1.10 8.60 1.205 8.80 1.191 9.00 1.185 9.20 1.183 9.40 1.181 1.05 9.60 1.184 9.80 1.191 10.00 1.197 10.20 1.204
- 10.40 1.000 1 _________.
- 10.60 1.000
- 10.80 1.000 0
2 4
6 8
10 12
- 11.20 1.000
- 11.40 1.000 BOTTOM CORE HEIGHT (FEET)
- 11.60 1.Ooo
- 11.80 1.000 FIGURE 2
. 12.00 1.ooo Catawba Unit 1 Cycle 2 RAOC W(z) at 6000 MWD /MTU i
e Top and 80tton 15% Excluded as para Tech Spec 4.2.2.2G e
o z. :. ::::-
=- : - -
l i
HEIGHT EOL (FEET)
W(2)
O.00 1.000
.
- O.20 1.000
- O.40 1.000 O.60 1.000
- .O.80 1.000 1.00 1.000 4
1.20 1.000 l
=
1.40 1.000 1.60 1.000 1.40
'.218 1.80 FL 2.00 1.209
^
2.20 1.200 x
2.40 1.190 2.60 1.184 x
1.35 2.80 1.187 jg 3.00 1.188 i
3.20 1.193 3.40 1.205 3.60 1.221 3.80 1.236 u
1.30 4.00 1.251 4.20 1:263 i
.m.Y w
i C-M 4.40 1.273 4.60 1.279 y
4.80 1.282 1.25 2
5.00 1.281 n
5.20 1.277 x
5.40 1.284
^
5.60 1.301 w
5.80 1.323 N
^-
6.00 1.346 1*20 dL 6.20 1.366 y
w o
V'
"_ws' 6.40 1.378 6.60 1.385 6.80 1.387 7.00 1.386 1.15-7.20 1.380 7.40 1.370 7.60 1.355 i
7.80 1.335 i
8.00 1.310 8.2o 1.282 l
,*,o 8.40 1.249 4
)
8.60 1.222 8.80 1.208 9.00 1.198 1
9.20 1.190 1.05 9.40 1.181 9.60 1.180 l
9.80 1.183 10.00 1.187 10.20 1.191
- 10.40 1.000 T-
- 10.60 1.000 0
2 4
6 8
10 12
- 11.00 1.000
- 11.20 1.000 i
BOTTOM CORE HEIGHT (FEET)
- 11.40 1.000 FIGURE 3
- 11.80 1.000 Catawba Unit 1 Cycle 2 1
RAOC W(z) at 11500 MWD /MTU 4
i
- Top and Botton 15% Excluded as per* Tech Spec 4.2.2.2G i
J:.
r.- :r
- :^ ' -
)
HEIGHT BOL (FEET W(Z)
- O.00 1.000 O.20 1.000 O.40 1.000 l
-* O.60 1.000 l
- O.80 1.000 1.00 1.000 1.20 1.000 a
1.40 1.000 1.60 1.000 i
t.80 1.Os9 1.14 2.00 1.057 2.20 1.055 2.40 1.052 2.60 1.050 2.80 1.048 3.00 1.046 3.20 1.045 1.12 3.40 1.043 3.60 1.041 3.80 1.039 l
4.00 1.037 4.20 1.035 4.40 1.033 1.10 4.60 1.432 4.80 1.030 5.00 1.028 5.20 1.026 5.40 1.023 5.60 1.021 1.08 -
5.80 1.021 6.00 1.024 6.20 1.028
~
6.40 1.032 6.60 1.035 3r 6.80 1.038 7.00 1.041 1.06 -
7.20 1.043 7.40 1.046
- ^ ^ -
7.60 1.047 J"~'^i x,
7.80 1.048
""Z" 8.00 1.049 8.20 1.050
=
Z 8.40 1.050 1.04 8.60 1.050
=
=
1 8.80 1.049
^^
9.00 1.047 9.20 1.046 9.40 1.045 1.02 9.60 1.044 9.80 1.044 10.00 1.046 10.20 1.046
- 10.40 1.000
- 10.60 1.000
- 10.80 1.000 1.::::::::-
- 11.00 1.000 O
2 4
6 8
10 12 = 11.20 1.000
- 11.40 1.000
- 11.60 1.000 BOTTOM CORE HEIGHT (FEET)
- 11.80 1.000
- i2.00 1.000 FIGURE 4 Catawba Unit i Cycle 2 Baseload W(z) for Powers Between 80% and 100% of Rated Thermal Power Within 3% AFD of the Measured Target 150 MWD /MTU
- Top and Botton 15% Excluded as per Tech Spec 4.2.2.2G
-9
I HEIGHT MOL (FEE 7)
W(Z)
O.00 1.000 0.20 1.000
=
O.40 1.000 O.60 1.000 O.80 1.000 1.00 1.000 1.20 1.000 1.40 1.000
=
1.60 1.000 1.80 1.070 1.10 2.00,
1.066 2.20 1.063 2.40
-1.058 2.60 1.053 2.80 1.049 3.00 1.044 3.20 1.039 f
-X
'3.40 1.035 l
f' 3.60 1.033 1.08 3.80 1.031 4.00 1.029 x
4.20 1.026 4.40 1.024 m.
x 4.60 1'.022 4.80 1.021 5.00 1.020 X
5.20 1.019 X
y 5.40 1.019 1.06 5.60 1.020 5.80 1.024 m
6.00 1.028 x
6.20 1.032 N
6.40 1.035
~
X 6.60 1.038 3
6.80 1.039 7.00 1.039 x
7.20 1.041 1.04 l
x mt 7.40 1.045 7.60 1.050 i
X X
7.80 1.054 X
8.00 1.058 X
8.20 1.061 lE 8.40 1.065 L'
8.60 1.068 8.80 1.071 m.
9.00 1.074 1.02 unr 9.20 1.077 9.40 1.080 9.60 1.082 9.80 1.083 10.00 1.084 10.20 1.085
- 10.40 1.000
- 10.60 1.000
- 10.80 1.000 1 _
- 11.00 1.000
+ 11.20 1.000 0
2 4
6 8
10 12
- 11.40 1.000 BOTTOM CORE HEIGHT (FEET)
~$
- 12.00 1.000 FIGURE 5 Catawba Unit 1 Cycle 2 Baseload W(z) for Powers Between 80% and 100% of Rated Thermal Power Within 3% AFD of the Measured Target l
6000 MWD /MTU e Top and Bottom 15% excluoed as per Tech Spec 4.2.2.2G l
l 7:::. _ _ _ L :- - -.... -., - - -.. _ _.
HEIGHT EDL (FEET)
W(Z)
- O.00 1.000
- O.20 1.000
-
- O.40 1.000
- - 0.60 1.000
- Q.80 1.000 1.00 1.000
=
t.20 1.000 e.
1.40 1.000 t.60 1.000 1.10 t.80,
1.080 2.00 1.076 2.20 1.070 m
2.40 1.064 1r 2.60 1.057 2.80 1.050 3.00 1.044 3.20 1.036 x
1.08
^^
3.40 1.035 3.60 1.032
) :
3.80 1.030 4.00 1.027 x
4.20 1.025 4.40 1'.623 K
X 4.60 1.023 4.80 1.027 4
x 3
5.00 1.033 x
5.20 1.042 1.06 x
5.40 1.048 x
1.
5.60 1.054 5.80 1.059 6.00 1.063 a
N 6.20 1.067 3
6.40 1.069 6.60 1.070 8.80 1.070 7.00 1.069 1.04 7.20 1.068 7.40 1.065 X
1 7.60 1.062 7.80 1.057 8.00 1.056 8.20 1.061 3:
x x
8.40 1.065 xx 8.60 1.069 8.80 1.073 1.02 9.00 1.077 9.20 1.080 9.40 1.083 9.60 1.085 b "N 9.80 1.088 10.00 1.091
"~l' 10.20 1.092 l
[*Z
- 10.60 1.000
- 10.40 1.000 t
-~'''
=
1O.80 1.000
+ 11.00 1.000 0
2 4
6 8
to 12 l
- 11.20 1.000 BOTTOM CORE HEIGHT (FEET)
" 80 1 000 FIGURE 6 12.00 1.000 Catawba Unit 1 Cycle 2 i
Baseload W(z) for Powers Between 80% and 100% of Rated Thermal Power Within 3% AFD of the Measured Target 11500 MWD /MTU l
- Top and Bottoo 15% ocluded as per* Tech Spec 4.2.2.2G 7---
--- - ;-_7_ -__ _ 7
O UNIT 1 CYCLE 2 RELOAD SAFETY EVALUATION REPORT ADDENDUM
e
1.3 CONCLUSION
S From the evaluation presented in this report, it is concluded that the Cycle 2 design does not cause the previously acceptable safety limits to be exceeded.
This conclusion is based on the following:
1.
Cycle 1 burnup is between 13,640 and 13,660 MWD /MTU.
2.
Cycle 2 burnup is limited to a maximum of 12,000 MWD /MTU which includes a coastdown.
3.
There is adherence to all plant operating limitations in the Technical Specifications including those changes presented in Section 4.0 of this report.
i
,,,......c.,.
2
~
,~
TABLE 1 CATAWEA UNIT 1 - CYCLE 2 FUEL ASSEMBLY DESIGN PARAMETERS Region 1
2 3
4A 4B Enrichment (w/o U-235)+
1.61 2.40 3.10 3.20 3.41 Density (% Theoretical)+
95.16 94.96 95.04 95.28 95.30 Number of Assemblies 1
64 64 48 16 Approximate Burnup at++
12200*
15600 11700 0
0 Beginning of Cycle 2 (MWD /MTU)
Approximate Burnup at++
22100 25600 24700 13400 11100 End of Cycle 2 (MWD /MTU)
- The burnup noted is for the Region 1 fuel assemblies being used and is not the average for the whole region.
+ All fuel region values are as-built.
++ Based on E0C1 = 13650 MWD /MTV, E0C2 = 12000 MWD /MTU (coastdown included) il mu e-nau l
-