NRC-94-4174, Forwards Rev 0 to PCS-GSR-001, AP600 Passive Containment Cooling Sys Design Basis Analysis Model & Margin Assessment

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Forwards Rev 0 to PCS-GSR-001, AP600 Passive Containment Cooling Sys Design Basis Analysis Model & Margin Assessment
ML20070F065
Person / Time
Site: 05200003
Issue date: 06/30/1994
From: Liparulo N
WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To: Borchardt R
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20070F068 List:
References
NTD-NRC-94-4174, NUDOCS 9407180162
Download: ML20070F065 (2)


Text

l Westinghouse Energy Systems hx 355 Pittsbutgh Pennsylvania 15233 0355 Electric Corporation NTD-NRC-94-4174 l DCP/NRC0111 l Docket No.: STN-52-003 June 30,1994 Document Control Desk U.S. Nuclear Regulatory Commission 1 Washington, D.C. 20555 4

ATTENTION: MR. R. W. BORCHARDT

SUBJECT:

AP600 PCCS DESIGN BASIS ANALYSIS MODELS AND MARGIN ASSESSMENT REPORT I

Dear Mr. Borchardt:

1 Enclosed with this letter is a report discussing the models used in AP600 Passive Containment Cooling System design basis analyses and an assessment of the margin represented in these analyses. The enclosed report responds to an NRC request for information to support the preparation of the AP600 draft safety evaluation report.

The report shows that the AP600 containment response to design basis accidents is similar to current operating plants and also shows that the margins in the AP600 design basis analyses are comparable to those provided for currently licensed plants.

The Westinghouse Electric Corporation copyright notice is also attached.

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

M

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N. J. Lipa ' o, Ma)+ nager Nuclear Safety Regulatory And Licensing Activities

/nja Enclosure Attachment cc: R. Hasselberg, NRC (10 copics of Enclosure)

T. Kenyon, NRC (w/o Enclosures) -

J. Kudrick, NRC i C. Hoxie, NRC B. A. McIntyre, Westinghouse (w/o Enclosures) 407190162 940630 DR 4 ADOCK 05200003 PDR [

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, es 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 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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