ML20029D793

Forwards Proprietary Sketches on Design of Stage 4 of Automatic Depressurization Sys,In Support of Response to NRC RAI on AP600 (Q952.64).Sketches Withheld (Ref 10CFR9.17(a)(4))

ML20029D793
Person / Time
Site:	05200003
Issue date:	04/29/1994
From:	Liparulo N WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:	Borchardt R NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML19304C085	List: ML20029D793 ML20029D796
References
NTD-NRC-94-4109, NUDOCS 9405100105
Download: ML20029D793 (5)

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"'"sbutth PennsyNania 15230 0355 Electric Corporation NTD-NRC-94-4109 DCP/NRC0043 Docket No.: STN-52-003 April 29,1994 Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555 ATTENTION: MR. R. W. BORCHARDT

SUBJECT:

ADDITIONAL INFORMATION IN SUPPORT OF WESTINGHOUSE RESPONSE TO RAI 952f>4 ON THE AP600 DESIGN

Dear Mr. Borchardt:

The enclosures to this letter provides information in support of an NRC request for additional  ;

information on the AP600 (Q952.64), which requests information on the design of Stage 4 of the  ;

Automatic Depressurization System (ADS).

The following information is included in the enclosure:

Sketch 1 AP600 ADS 4th Stage - West Compartment Sketch 2 AP600 ADS 4th Stage - East Compartment The piping sketches provided in the enclosure represent preliminary routings. The details of the routing are subject to change as a result of ongoing design activities.

This submittal contains Westinghouse proprietary information consisting of trade secrets, commercial i 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 Nuclear Regulatory Research and the necessary subcontractors that have signed a p.mprietary l non-disclosure agreement with Westinghouse without the express written approval of Westingiouse, l

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- 940siooios 940429 PDR ADDCK.05200003 4#f A PDR If

I NTD-NRC 94-4109 l DCP/NRC0043 April 29,1994 '

Correspondence with respect to the application for withholding should reference AW-94-618, and should be addressed to N. J. Uparuto, Manager of Nuclear Safety And Regulatory Activities, Westinghouse Electric Corporation, P.O. Box 355, Pittsburgh, Pennsylvania, 15230-0355.

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

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N. J, Liparulo, Manager  ;

Nuclear Safety & Regulatory Activities

/nja-Enclosure Attachments ec: T. Kenyon, NRC R. Hasselberg, NRC L Shotkin, NRC B. A. McIntyre, Westinghouse (w/o Attachrnents, Enclosure) 1676A

Westinghouse Proprietary Class 2C Enclosure to Westinghouse Letter NTD-NRC-94-4109 Sketch 1 AP600 ADS 4th Stage - West Compartment Sketch 2 AP600 ADS 4th Stage - East Compartment P

1676A

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COPYRIGIIT NOTICE 4

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 not withstanding. 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 nurnber of copies submitted is insufficient for this purpose. 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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1 PROPRIEl'ARY INFORMATION NOTICE hransmitted herewith are proprietary and/or non-proprietary versions of documents furnished to the j NRC in connection with requests for generic and/or plant specific review and approval. l 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 l 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 parenti' eses located as a superscript immediately following the brackets enclosing each item of information being identified as proprietaty 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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