ML20245F582
| ML20245F582 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 04/21/1989 |
| From: | Tucker H DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TAC-72886, TAC-72887, NUDOCS 8905020431 | |
| Download: ML20245F582 (4) | |
Text
_
DUKE POWER GOMPANY P.O. nox 33180 011ARLOTTE, N.C. 28242 HALH. TUCKER TELEPHONE vrum Pararnent (7o4) 073-4531 NUUR zASE PMODUCTION April 21, 1989 Document Control Desk U. S. Nuclear Regulatory Commission Washington, D, C.
20555
Subject:
Catawba Nuclear Station, Units 1 and 2 Docket Nos. 50-413 and 50-414 Technical Specification Amendment Demonstration Rod Control Cluster Assemblies (RCCAs)
This letter contains information to supplement my submittal of April 6, 1989 concerning the same subject. The amendment will allow a demonstration program to be conducted at Catawba. This demonstration program will demonstrate the interface compatibility and successful operating experience with Babcock &
Wilcox Fuel Company (BWFC) supplied 17x17 RCCAs and define and compare the operational wear characteristics of wear resistant RCCA coatings and conventional RCCA clad materials.
The three assemblies referenced in my April 6, 1989 submittal will be placed l
in Shutdown Bank
'B'.
The assemblies will be placed at coordinates J-03, G-03 1
and J-13.
The Inconel clad assembly will be placed at coordinates J-13.
Reference FSAR Figure 4.3.2-5A for a typical core pattern. An on-site inspection campaign is planned between cycles 3 and 4 to obtain data on the upper internais guide cards and demonstration RCCAs. The Unit 2 End of Cycle 3 is currently scheduled to start in June, 1990.
Benchmarking of the new RCCAs was performed at BWFC facilities prior to shipment to the site. A second on-site campaign is planned between cycles 4 and 5 for (upper internals) guide cards and RCCAs to acquire wear performance data.
One additional on-site campaign is planned. The schedule for this campaign will be established based on the results of the earlier campaigns. shows the results of predicted and measured rod worths for Catawba 2, cycle 2. shows the expected rod worths'for Catawba 2, cycle 3.
The demonstration rods are in a relatively high worth bank. Actual bank worth me surements will be performed during startup physics testing. Any unusual or nc predicted bank worth values will be identified as a result of these measuretants.
Very truly yours, h,s46lh -
l f./R -
Hal B. Tucker Attachments PGL/III/33 i
\\
8905o2o431 090421 '
\\-
DR ADOCK 05000413 PNU
U. S. Nuclear Regulatory Commission April 21, 1989 Page Two xc:
Mr. S. D. Ebneter, Regional-Administrator U. S. Nuclear Regulatory Commission Region II i
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 American Nuclear Insurers c/o Dottie Sherman, ANI Library The Exchange, Suite 245 270 Farmington Avenue Farmington, CT 06032 l
M&M Nuclear Consultants l
1221 Avenue of the Americas l
New York, New York 10020 INPO Records Center Suite 1500 1100 Circle 75 Parkway Atlanta, Georgia 30339 Mr. W. T. Orders NRC Resident Inspector Catawba Nuclear Station j
i l
1
T 4
3' p
Catawba 2 Cycle 2'
-ZERO POWER PHYSICS = TEST RESULTS AND COMPARISONS ROD EXCHANGE RESULTS MEASURED - DUKE Measured Duke Predicted *-
% Diff.
m Bank Worth Bank Worth ~
Banks Inserted (PCM)
(PCM)
((M-P)/P)*100'
' 2.84 CTL L IN 444 457 CTL C IN (Reference' Bank) 988
'955
+3.46 CTL B IN 788 701
+12.41 CTL A IN 400
'360
+11.11-421
'+3.80 -
SE IN 437
~
348
~ 4.31.
SD IN 333 SC IN 323 345
-6.38 SB IN 820
.779
+5.26_
SA IN 369 339
+8.85 i
' 4~19 j
+
TOTAL WORTH 4902 4705
-1
)i
- Predicted bank worths calculated at a critical baron rf concentration of 1279 ppmb.
i i
l DIFFERENTIAL BORON WORTH OVER REFERENCE BANK i
)
1 I
Measured Duke Predicted
% Diff (PCM/ PPM)
(PCM/ PPM)
((M-P)/P)*100
-10.86
-10.49
+3,53 i
j
-,s y
1 l
Catawba 2 Cycle 3 Rod Exchange' Data-HZP, BOC r
. j 1
j i
Predicted Critical Height Bank Worth of. Control C Alpha Factors Banks Inserted (PCM)~
(SWD)
(No Units) n
- j
.)
D IN 566 152 1.153-
- d l'
C IN (Reference Bank) 1019 B IN 628 160 1.143 I
A IN 280 88 0.902 SE IN 440 116 0.918 j
ST) IN 376 124 1.117
' 1 i
SC IN 376 124 1.117 SB IN 832 185 0.974 SA IN 300 118 1.165 4
TOTAL WORTH 4817 s
Reference Bank Differential Boron Worth = -9.52 PCM/PPMB.
i NOTE: Rod exchanges were performed at the CTRL C IN critical boron concentration of 1300 PPMB, HZP, no xenon conditions.
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