NRC-85-3081, Forwards Proprietary WCAP-10988 & Nonproprietary WCAP-10989, COBRA-NC,Analysis of Main Steam Line Break in Catawba Unit 1 Ice Condenser Containment. Proprietary Version Withheld (Ref 10CFR2.790)

Forwards Proprietary WCAP-10988 & Nonproprietary WCAP-10989, COBRA-NC,Analysis of Main Steam Line Break in Catawba Unit 1 Ice Condenser Containment. Proprietary Version Withheld (Ref 10CFR2.790)

ML20137Z512
Person / Time
Site:	Catawba
Issue date:	11/27/1985
From:	Rahe E WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:	Thomas C Office of Nuclear Reactor Regulation
Shared Package
ML19276C977	List: ML20137Z528 ML20137Z539 NRC-85-3081, Forwards Proprietary WCAP-10988 & Nonproprietary WCAP-10989, COBRA-NC,Analysis of Main Steam Line Break in Catawba Unit 1 Ice Condenser Containment. Proprietary Version Withheld (Ref 10CFR2.790)
References
NS-NRC-85-3081, NUDOCS 8512110321
Download: ML20137Z512 (2)

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' . November 27, 1985 NS-OPLS-0PL-I-85-193 Dr. C. O. Thomas, Qiief Standardization and Special Projects Branch Division of Licensing U. S. Nuclear Regulatory Commission hN/3

. Washington, D. C. 20555 1DPICAL REPORTS WCAP-10988 AND WCAP-10989 " COBRA-NC, ANALYSIS OF MJLIN STEAM LINE BREAK IN THE CATAWBA UNIT 1 ICE CONDENSER CONTAINENT"

Dear Dr. Thomas:

Enclosed are:

1. henty-three (23) copies of the Westinghouse Topical Report WCAP-10988

" COBRA-NC, Analysis of Main Steam Line Break in the Catawba Unit 1 Ice Condenser Containment", November 1985 (Proprietary).

2. henty-three (23) copies of the Westinghouse Topical Report WCAP-10989

" COBRA-NC, Analysis of Main Steam Line Break in the Catawba Unit 1 Ice Condenser Containment" November,1985 (Non-Proprietary).

Also enclosed are:

1. One (1) copy of Application for Withholding, AW-85-082 (Non-Proprietary) with Proprietary Information Notice.

2. One (1) copy of Affidavit (Non-Proprietary).

This report describes the COBRA-NC model of the Catawba ice condenser containment, and a series of calculations of the containment response for a postulated Main Steam Line Break in which superheated steam enters the containment. The heat transfer models as well as the ice condenser drain flow effects are fully described.

This report is submitted for review to the NRC for acceptance as licensing material for reference on one or more applications. This letter may be referenced as part of license applications for Duke Power Co. (Catawba) and Tennessee Valley Authority (Watts Bar).

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This tubmittal contrins propristary information of W:stinghouse Electric Corporstion. In conformanca with th3 requirements of 10CFR Section 2.790, as amended, of the Commission's regulations, we are enclosing with this submittal an application for withholding from public disclosure and an affidavit. The affidavit sets forth the basis on which the information may be withheld from public disclosure by the Commission. Correspondence with respect to the affidavit or application for withholding should reference AW-085-082 and should be addressed to R. A. Wiesemann, Manager, Regulatory and Legislative Affairs, Westinghouse Electric Corporation, P. O. Box 355, Pittsburgh, PA 15230.

The application fee of $150 will be submitted tmder separate cover.

Please feel free in contacting M. P. Osborne, Manager, Transient Analysis-II if you have any questions concerning this matter.

Very truly yours, WBTINGHOUSE ELECTRIC CORPORATION E. P. Rahe, Jr. P iger Nuclear Safety De -tment RH0/dmr Enclosure L__.______________________________________ _ . _ _ _ _ _ . _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ . _ __ _ _ _ _ ._ .____._m.__. ._