ML20248B131

Forwards Proprietary Topical Rept RXE-89-003-P, Steady State Reactor Physics Methodology. Util Results Compared to Westinghouse Design Predictions.Addl Verification Underway. Application for Withholding Encl.Rept Withheld (10CFR2.790)

ML20248B131
Person / Time
Site:	Comanche Peak
Issue date:	07/31/1989
From:	William Cahill, Walker R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML19292J393	List: ML20248B131 ML20248B138
References
TXX-89533, NUDOCS 8908090125
Download: ML20248B131 (3)

Text

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P Log # TXX-89533 File # 904.3 r = 915 (clo) 1UELECTRIC July 31, 1989 William J. Cahill. Jr.

Decutne Vice Presidmt U. S. Nuclear Regulatory Commission Attp: Document Control Desk Washington, D. C. 20555

SUBJECT:

COMANCHE PEAK STEAM CLECTRIC STATION (CPSES)

DOCKET NOS. 50-445 AND 50-446 STEADY STATE REACTOR PHYSICS METHODOLOGY TOPICAL REPORT RXE-89-003 REF: Letter from W. J. Cahill, Jr. (TV Electric) to USNRC, TXX-89047, dated January 21, 1989.

Gentlemen:

TV Electric has developed a steady state reactor physics methodology to be utilized in support of design, licensing, startup and operation of Comanche Peak Steam Electric Station (CPSES) Units 1 and 2. The methodology has been verified by comparison of analytical results to measured results for core configurations ranging from infinite pin cells to power reactors. In addition, based on those comparisons, the reliability of the analytical l results has been quantified to permit application of appropriate uncertainties l

to those reactor physics design parameters important to safety analyses.

Lastly, pre-startup calculations have been performed for Comanche Peak Unit 1, Cycle 1 using the TU Electric methodology. The TU Electric results have been compared to Westinghouse design predictions. The steady state reactor physics analysis capability represents one component of the complete TU Electric reload analysis program described in Reference 1.

Additional verification of the methodology is underway through analyses of i Standard Problems provided by Brookhaven National Laboratory (BNL). The Standard Problems include both an assembly configuration and a core configuration. The TU Electric results of the Standard Problem calculations will be provided to BNL during the third quarter of this year. After BNL completes their review of the TU Electric analyses, the conclusions from that review will be submitted to the NRC by TU Electric.

Enclosed are two copies of Report No. RXE-89-003-P, " Steady State Reactor Physics Methodology" (Proprietary).

Also enclosed are two copies of Report No. RXE-89-003-NP, " Steady State Reactor Physics Methodology" (Non-Proprietary).

l 8900090125 890731 PDR P Enclosure contains " proprietary" information, not for public disclosure.

MI A ADOCK 05000445 Q PNU j l em krth Olive Street LB 81 Dallas, Texas 75201

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1 TXX-89533 )

July 31, 1989 1 Page 2 of 2 l As RXE-89-003-P contains information proprietary to Westinghouse Electric Corporation, it is supported by an affidavit signed by Westinghouse, the owner of the information. The affidavit sets forth the basis on which the i information may be withheld from public disclosure by the Commission and addresses, with specificity, the considerations listed in paragraph (b)(4) of Section 2.790 of the Commission's regulations, Accordingly, it is respectfully requested'that the information which is proprietary to Westinghouse be withheld from public disclosure in accordance with 10CFR2.790 of the Commission's regulations.

A Westinghouse Proprietary Information Notice, an Application for Withholding and an accompanying Affidavit, CAW-89-084, are enclosed. Correspondence with.

respect to the proprietary aspects of ti;e Application for Withholding or the supporting Westinghouse Affidavit should reference CAW-89-084 and should be addressed to R. A. Wiesemann, Manager, Regulatory and Legislative Affairs, Westinghouse Electric Corporation, P. O. Box 355, Pittsburgh, Pennsylvania 15230-0355.

Your timely review of this topical report will be appreciated. If you have any questions on this material, please contact Mickey R. Killgore (214-812-8271) or Jimmy D. Seawright (214-812-4375) of my staff.

Sincerely, Y b William J. Cahill, Jr.

1 By: 4 Roger"D. Walker Manager, Nuclear Licensing i

JDS/vid j Enclosures c - Mr. R. D. Martin, Region IV Resident Inspectors, CPSES (3) l l

~ ,to TXX-89533 PROPRIETARY INFOPEATION NOTICE TRANSKETTED HEREWITH ARE PROPRIETARY AND/OR NON-PROPRIETARY VERSIONS OF D0QJMENE FURNISHED TO EE NRC IN CONNECTION WITH REQUESTS FOR GENERIC AND/OR PLANT SPECIFIC REVIEW AND APPROVAL. -

IN ORDER 10 CONFORM E THE REQUIREMENTS T 10CFR2.790 0F THE COMMISSION'S RIIiULATIONS CONCERNING THE PROTECTION OF PROPRIETARY INFORETION SO SUBMITTED l

30 7HE NRC, IEE INFDPyATION WHICH IS PROPRIETARY IN THE PROPRIETARY VERSIONS IS  ;

CONTAINED WITHIN BRACKED AND WHEE THE PROPRIETARY INFORMATION HAS BEEN j i

DC ETED IN THE NON-PROPRIETARY VERSIONS CHLY THE BPACKETS REMAIN, THE -

Ih7OPEATION WAT WAS CONTAINED WITHIN THE BRACKETS IN THE PROPRIETARY VERSIONS  !

HAVING EEDi DELEIG. THE JUSTIFICATION FOR C1. AIMING THE INFORMATION SO I i

DESIDNATED AS PROPRIETARY IS INDICATE IN BCTIH VERSIONS_

BY MEANS. OF LOWS CASE LETTERS (a) THROUGH (g) CONTAINED WITHIN PARENEESES LOCATED AS A SUPERSCRIPT IMMEDIATELY PDLLORING THE BRACKETS EQ 0 SING EACH ITEM OF Ih70RETION BEING IDENTIFIED AS PROPRIETARY OR IN THE PARGIN OPPOSITE SUCH Ih70RETION. THESE i LOWER CASE LETTERS Patt.R TD THE TYPES T INF0FFATION WESTINGHOUSE QJSIDMARILY HOLDS IN CONFIDENCE DENTIFIED IN SECTIONS (4)(ii)(a) through (4)(ii)(g) 0F THE AFFIDAVIT ACCOMPAhTING 7EIS TRANSMITTAL PURSUANT 7010CFP2.790(b)(1).

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