NRC-94-4064, Forwards Proprietary & Nonproprietary Versions of AP600 Design Change Description Rept. Proprietary Version Withheld.Proprietary Portion of Document Sent to Westinghouse

Forwards Proprietary & Nonproprietary Versions of AP600 Design Change Description Rept. Proprietary Version Withheld.Proprietary Portion of Document Sent to Westinghouse

ML20063K055
Person / Time
Site:	05200003
Issue date:	02/15/1994
From:	Liparulo N WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:	Borchardt R NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20063K058	List: ML20063K067 ML20063K070 NRC-94-4064, Forwards Proprietary & Nonproprietary Versions of AP600 Design Change Description Rept. Proprietary Version Withheld.Proprietary Portion of Document Sent to Westinghouse
References
DCP-NRC0006, DCP-NRC6, NTD-NRC-94-4064, NUDOCS 9402280137
Download: ML20063K055 (4)

Text

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Westinghouse Energy Systems b 355 Pegh PennsyNania 1523D-0355 Electric Corporation NTD-NRC-94-4064 DCP/NRC0006 Docket No.: STN-52-003 February 15,1994 -l Document Control Desk j U.S. Nuclear Regulatory Commission i Washington, D.C. 20555 ATTENTION: MR. R. W. BORCHARDT

SUBJECT:

AP600 DESIGN CHANGE DESCRIPTION REPORT

Dear Mr. Borchardt:

Enclosed with this letter is a report describing eleven changes to the AP600 design as described in the AP600 Standard Safety Analysis Report (SSAR). The enclosed report describes each change, identifies the purpose of the change and discusses the impact on the AP600 safety analyses and probabilistic risk assessment and test programs.

Changes to the Automatic Depressurization System (ADS) and Core Makeup Tank designs were discussed during a meeting between NRC and Westinghouse senior management on December 22, 1993. The impact of the ADS design changes on the ADS test program were discussed with NRC l

staff on January 25,1994. A meeting between Westinghouse and NRC staff is planned for February 22,1994 in Monroeville, PA to discuss the changes in more detail.

The enclosed report is provided as interim documentation of the design changes. The identified impacts on the AP600 SSAR and PRA will be included in future revisions.

I Enclosure 2 contains a non-proprietary copy of the design change description report.

This submittal contains Westinghouse proprietary information consisting of trade secrets, commercial information or financial information which we consider privileged or confidential pursuant to 10CFR9.17(a)(4). Therefore, it is requested that the Westinghouse proprietary information attached hereto be handled on a confidential basis and be withheld from public disclosures.

This material is for your internal use only and may 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 Commission, the Office of Nuclear Reactor Regulation, the Office of Nuc! car Regulatory Research and the necessary subcontractors that have signed a proprietary

- non-disclosure agreement with Westinghouse without the express written approval of Westinghouse. _

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9402280137 940215 j

im^ PDR ADOCK 05200003 pl A PDR 2

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l NTD-NRC-94-4064 DCP/NRC0006 2- February 15,1994 Correspondence with respect to the application for withholding should reference AW-94-591, and should be addressed to N. J. Liparulo, Manager of Nuclear Safety And Regulatory Activities, Westinghouse Electric Corporation, P.O. Box 355, Pittsburgh, Pennsylvania, 15230-0355.

Picase contact Brian A. McIntyre on (412) 374-4334 if you have any questions concerning this transmittal.

I Lh //

N. J. Liparulo, Manag r k

Nuclear Safety & Regulatory Activities

/nja

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Enclosure l Attachments  ;

cc: T. Kenyon, NRC (10 copics of Enclosure 1) j R. Hasselberg, NRC (w/o Enclosures)

B. A. McIntyre, Westinghouse (w/o Enclosures)  ;

i i

1511 A

I COPYRIGIIT NOTICE The reports transmitted herewith each bear a Westinghouse copyright notice. The NRC is permitted to make the number of copics 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 not withstanding. With respect to the non-proprietary versions of these reports, the NRC is permitted to make the number of copics bevond those necessary for its internal use which are necessary in order to have one copy available for pubiic 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. The NRC is not authorized to make copies for the personal use of members of the public who make use of the NRC public document rooms. Copics 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 ,

f 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 i 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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