ET-NRC-93-3944, Forwards Proprietary Drawings,Providing Details of Steam Distributor Assembly Being Used in AP600 Core Makeup Tank Test Facility.Drawings Withheld (Ref 10CFR2.790)). Proprietary Portion of Document Sent to Westinghouse

Forwards Proprietary Drawings,Providing Details of Steam Distributor Assembly Being Used in AP600 Core Makeup Tank Test Facility.Drawings Withheld (Ref 10CFR2.790)). Proprietary Portion of Document Sent to Westinghouse

ML20056E176
Person / Time
Site:	05200003
Issue date:	08/16/1993
From:	Liparulo N WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:	Borchardt R NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20056E178	List: ET-NRC-93-3944, Forwards Proprietary Drawings,Providing Details of Steam Distributor Assembly Being Used in AP600 Core Makeup Tank Test Facility.Drawings Withheld (Ref 10CFR2.790)). Proprietary Portion of Document Sent to Westinghouse ML20056E180
References
ET-NRC-93-3944, NUDOCS 9308200192
Download: ML20056E176 (4)

Text

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Westinghouse Energy Systems b 32 l 2 Elecific Corporation mosamama n23nsa ET-NRC-93-3944 NSRA-APSL-93-0303 Docket No.: STN-524)03 August 16,1993 Document C4mtrol Desk U. S. Nuclear Regulatory Commission Washington, D. C. 20555 ATTENTION: MR. R. W. BORCHARDT 6UBJECT: TRANSMITTAL OF DRAWING OF A STEAM DISTRIBUTER FOR THE AP600 -

CORE MAKEUP TANK TEST FACILITY

Dear Mr. Borchardt:

Please find attached with this letter, a drawing which provide details of a steam distributer assembly being used in the AP600 Core Makeup Tank (CMT) test facility.

The steam distributcr, which is installed in the inlet to the CMT tank, is being used to improve condensation behavior under low pressure, high drain rate conditions with a cold CMT. The steam distributer minimizes the potential for and magnitude of pressure fluctuations resulting from steam jet penetration into the cold CMT water. At the same time, the distributer improves the drain down behavior of the CMT. It is noted that the pressure oscillations observed in the CMT shakedown tests without the steam distributer do not pose a structural concern. Use of the distributer does however provide for a smoother, more quiescent, CMT draindown behavior. It is Westinghouse *s intention to perform the remainder of the shakedown tests and the matrix tests with a steam distributer installed.

Also attached, in response to a NRC staff request, is a table providing the test conditions and observed behavior from these shakedown tests and core makeup tank test facility piping diagrams. Test data frorn shakedown tests (with and without the steam distributer) will be included in the final test report on the CMT tests.

Plans are underway to install a similar steam distributer device in both the SPES-2 and OSU integral test facilities. Appropriate design changes for the AP600 plant are being evaluated.

The Westinghouse E!cctric Cntporation copyright notice, proprietary information notice, application for withholding and affidavit are attached.

This submittal contains Westinghouse proprietary infortnation 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.

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I y "IinO'"l F 9308200192 DR 930816 I' ADOCK 05200003 6$

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ET-NRC-93-3944 l NSRA-APSI 93-0303 August 16,1993 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 l other person or organir.ation outside the Commission, the Office of Nuclear Reactor Regulation or the  ;

Office of Nuclear Regulatory Research without the express written approval of Westinghouse.  ;

Correspondence with respect to the application for withholding should reference AW-93-506, and  :

should be addressed to N. J. Liparulo, Manager of Nuc! car 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. l Very truly yours,  ;

e k be N. J. Liparulo, Manager i Nuclear Safety & Regulatory Activitics

/nja Attachments cc: T. Kenyon, NRC

! R. Hasselberg, NRC ,

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

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i COPYRIGIIT NOTICE i 1

The reports transmitted herewith each bear a Wtstinghouse copyright notice. The NRC is permitted to j

make the number of copies of the information contained in these reperts which are necessary for its  !

internal use in connection with generic and plant-specific reviews and approvals as well as the issuance, j denia!, amendment, transfer, renewal, modification, suspension, revocation, or violation of a license, pennit. order, or regulation subject to the requirements of 10 CFR 2.790 regarding restrictions on public disclcisure to the extent such information has been identified as proprietary by Westinghouse, copyright  !

i protection not withstanding. With respect to the non-proprietary versions of these reports, the NRC is i permitted to make the number of copies beyond those necessary for its internal use which are necessary i

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 kical public document rooms as may be required by NRC i regulations if the number of copies submitted is insufficient for this purpose The NRC is not authorized  ;

to male copics for the personal use of members of the public who make use of the NRC public document  !

i rooms. 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 INFORM ATION NOTICE $

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Transmitted herewith are proprietary and/or non-proprietary versions of documents furnished to the NRC l m connection with requests for generic and/or plant specific review and approval. l 4

e l In order to conform to the requirements of 10CFR 2.790 of the commission's regulation concernmg 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 j l in the non-proprietarv versions on the brackets remain, the infonnation that was contained within brackets l

j and where the proprietary infonnation has been deleted in the non-proprietary versions only the brackets j j remain, the infonnation that was contained within the brackets in the proprietary versions having been 2

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 l

{ superscript immediately following the brackets enclosing each item of information being identified as i proprietary or in the margin opposite such infortnation. 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 accompanymg this transmittal pursuant to 10CFR2.790(b)(1). i l

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