NRC-96-4635, Forwards Proprietary & Nonproprietary Summary of Applicability of Zuber-Staub Film Stability Model & Method to Address Water Coverage in AP600 PCS Evaluation Model. Proprietary Summary Withheld Per 10CFR2.790

Forwards Proprietary & Nonproprietary Summary of Applicability of Zuber-Staub Film Stability Model & Method to Address Water Coverage in AP600 PCS Evaluation Model. Proprietary Summary Withheld Per 10CFR2.790

ML20097B837
Person / Time
Site:	05200003
Issue date:	01/31/1996
From:	Mcintyre B WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:	Quay T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML19311B985	List: ML20097B848 NRC-96-4635, Forwards Proprietary & Nonproprietary Summary of Applicability of Zuber-Staub Film Stability Model & Method to Address Water Coverage in AP600 PCS Evaluation Model. Proprietary Summary Withheld Per 10CFR2.790
References
NTD-NRC-96-4635, NUDOCS 9602070261
Download: ML20097B837 (4)

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bb o-Westinghouse Energy Systems ea 355 Pittsburgh Pennsylvania 15230-0355 Electric Corporation NTD-NRC-96-4635 DCP/NRC0457 Docket No: STN-52-003 January 31,1996 Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555 ,

ATTENTION: MR. T. R. QUAY

SUBJECT:

AP600 CONTAINMENT DBA EVALUATION MODEL (WATER COVERAGE MODEL)

Dear Mr. Quay:

Enclosure i to this letter provides information on the water coverage model utilized in the AP600 Containment Design Basis Accident evaluation model to provide a conservative estimate of the shell evaporation rates. The enclosure also addresses the applicability of the Zuber-Staub Film Stability model as applied in the AP600 Contaimnent DBA evaluation model. A complete discussion of the water coverage model will be included in the WGOTHIC Applications Report which is scheduled for completion in June,1996. The enclosure report is provided at this time to support NRC activities toward completion of the AP600 Supplemental Draft Safety Evaluation Report.

This submittal contains Westinghouse proprietary information consisting of trade secrets, commercial information or financial information which we consider privileged or confidential pursuant to 10CFR2.790. Therefore, it is requested that the Westinghouse proprietary information attached hereto be handled on a confidential basis and be withheld from public disclosures. The non-proprietary copy of Enclosure 1 is provided as Enclosure 2.

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9602070261 960131 PDR A

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i NTD-NRC-96-4635 i DCP/NRC0457 January 31,1996 This material is for your internal use only and rnay be used for the purpose for which it is submitted, it should not be otherwise used, disclosed, duplicated, or disseminated, in whole or in part, to any other person or organization outside the Conunission, the Office of Nuclear Reactor Regulation, the Office of Nuclear Regulatory Research and the necessary subcontractors that have signed a proprietary non-disclosure agreement with Westinghouse without the express written approval of Westinghouse.

l Correspondence with respect to the application for withholding should reference AW-96-920, and should be addressed to Brian A. McIntyre, Manager of Advanced Plant Safety and Licensing, Westinghouse Electric Corporation, P.O. Box 355, Pittsburgh, Pennsylvania, 15230-0355.

l . Please contact John C. Butler (412-374-5268) if you have any questions concerning this submittal.

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Bri A. McIntyre, Manager.

Advanced Plant Safety and Licensing

/nja Attachment cc: T. Kenyon, NRC (w/o Attaclunent or Enclosures)

D. Jackson, NRC (IEl)

E. Throm, NRC (IEl)

J. Kudrick, NRC (IE1) l P. Boehnert, ACRS (IEl) l B. A. McIntyre, Westinghouse (w/o Attachment or Enclosures)

N. J. Liparulo, Westinghouse (w/o Attachment or Enclosures)

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COPYRIGHT NOTICE The reports transmitted herewith each bear a Westinghouse copyright notice. The NRC is permitted to make the number of copies of the information contained in these reports which are necessary for its internal use in connection with generic and plant-specific reviews and approvals as well as the issuance, denial, amendment, transfer, renewal, modification, suspension, revocation, or violation of a license, permit, order, or regulation subject to the requirements of 10 CFR 2.790 regarding restrictions on public disclosure to the extent such information has been identified as proprietary by <

Westinghouse, copyright protection notwithstanding. With respect to the non-proprietary versions of these reports, the NRC is permitted to make the number of copies beyond those necessary for its internal use which are necessary in order to have one copy available for public viewing in the appropriate docket files in the public document room in Washington, D.C. and in local public document rooms as may be required by NRC regulations if the number of copies submitted is insufficient for this purpose. Copies made by the NRC must include the copyright notice in all instances and the proprietary notice if the original was identified as proprietary.

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PROPRIETARY INFORMATION NOTICE Transmitted herewith are proprietary and/or non-proprietary versions of documents furnished to the NRC in connection with requests for generic and/or plant specific review and approval.

In order to conform to the requirements of 10 CFR 2.790 of the Commission's regulations concerning the protection of proprietary information so submitted to the NRC, the information which is proprietary in the proprietary versions is contained within brackets, and where the proprietary information has been deleted in the non-proprietary versions, only the brackets remain (the information that was contained within the brackets in the proprietary versions having been deleted).

The justification for claiming the information so designated as proprietary is indicated in both versions by means of lower case letters (a) through (f) contained within parentheses located as a superscript immediately following the brackets enclosing each item of information being identified as proprietary or in the margin opposite such information. These lower case letters refer to the types of information Westinghouse customarily holds in confidence identified in Section (4)(ii)(a) through (4)(ii)(f) of the affidavit accompanying this transmittal pursuant to 10 CFR2.790(b)(1),

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