ML20198G427
| ML20198G427 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 01/08/1998 |
| From: | Terry C, Walker R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TXX-98002, NUDOCS 9801130032 | |
| Download: ML20198G427 (3) | |
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Log # TXX 98002
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File # 10019 h
Ref, # 10CFR50.46 r
C lilELECTRIC' January 8, 1998 C.1. awe Terry Gn.up We ttstiJme 1
U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS.-50 445 AND 50 446 ANNUAL REPORT OF CHANGES IN PEAK CLADDING TEMPERATURE REF:
TU Electric letter logged TXX 97013 from Mr. C L. Terry to the NRC dated January 13, 1997
Dear Sirs:
In accordance with the requirements of 10CFRE0.46(a)(3)(11), TU Electric submits the attached changes or errors discovered in the Emergency Core Cooling System (ECCS) evaluation model used to calculate peak cladding temperature (PCT) and the estimated effect of these changes or errors on the limiting ECCS analysis.
It is the current TV Electric practice to perform a new large break LOCA analysis for each reload cycle thereby establishing a new PCT for each fuel cycle.
The change in the Unit 2 !'CT from that provided in the last report reflects the new analysis performed for fuel cycle 4, and is not the result cf any errors discovered in the ECCS evaluation model. The analysis for Unit I continues to be based on Til Electric metho'! ology and reflects the analysis performed for fuel cycle 6.
9901130032 900100 PDR ADOCK O$000445-lll I
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P. O. Box 1002 Glen Rose Texas 76M3 l
TXXDBdO2:-
- Page 2 cf 2
'This commun1' cation contairs no new licensing basis: commitments regarding 3
CPSES Units-1 and 2.
Sincerely, b,
C. l., Terry By:
- 9Cf RogerY ' Walker Regulatory Affairs Manager-JDS/grp Attachment c-Mr. E. W. Herschoff, Region IV vir.- J. I. Tapia, Region IV Mr. T. J. Polich, NRR Resident Inspectors, CPSES f
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AttaCNenttoTXX98002 Page 1:of I CPSES-UNIT 1 PEAK CLADDING _IEMPERATURE CHANGES _I'El--
ANALYSIS OF RECORD *
(CYCLE 6 ANALYSIS) 2013 ECCS MODEL ASSESSMENTS -
NONE ECCS INPUT ERROR 1
CURRENT PCT VALUE (CYCLE 6 ANALYSIS) 2014 CPSES UNIT 2 PEAK CLADDING TEMPERATURE CHANGES ('F)
-ANALYSIS OF RECORD *
(CYCLE 4 ANALYSIS) 2119 ECCS MODEL ASSESSMENTS -
NONE EC"< INPUT ERROR NONE C0FAU4T PCT VALUE (CYCLE 4 ANALYSIS) 2119
- -Includes penalties-associated with Z equivalent error.
(See referenced letter)-
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