NSD-NRC-97-5010, Transmits Chapter 12, Clime Noding Study, of WCAP 14407, Wgothic Applications to AP600, for NRC Review.Calculation Summary Indicates That Results Insensitive.Proprietary Portion of Document Sent to Westinghouse
| ML20136H079 | |
| Person / Time | |
|---|---|
| Site: | 05200003 |
| Issue date: | 03/14/1997 |
| From: | Mcintyre B WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| To: | Quay T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20136H084 | List: |
| References | |
| NSD-NRC-97-5010, NUDOCS 9703190046 | |
| Download: ML20136H079 (4) | |
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. Westinghouse.
Energy Systems Ba 355 Pittstugh PennsyNania 15230-0355 Electric Corporation NSD-NRC-97-5010 i
DCP/NRC0760 Docket No.: ' STN-52-000 March 14,1997 t
Document Control Desk i
U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION: T. R. QUAY
SUBJECT:
. TRANSMITTAL OF CHAPTER 12, " CLIME NODING STUDY," OF WCAP 14407, "WGOTHIC APPLICATIONS TO AP600"
REFERENCE:
- 1. Westinghouse Letter NSD-NRC-96-4816, "WGOTHIC Applications to AP600, WCAP-14407", September 10, 1996.
Dear Mr. Quay:
By this letter, we are submitting Chapter 12, " Clime Noding Study," of WCAP 14407, "WGOTHIC Applications to AP600" for your review. An annulus model and the AP600 containment evaluation model were 'used as a basis for performing sensitivity calculations with the EGOTHIC code to evaluate clime noding sensitivity. The calculations summarized in Chapter 12 indicate the results are insensitive to either the clime noding pattern or the clime noding structure over the range of variables and conditions evaluated.
Sensitivity calculations reported in Chapter 12 were performed with Version 4.1 of the EGOTHIC '
l code which was configured for testing. Version 4.1 of EGOTHIC corrects an error in the clime
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calculation model that resulted bl an over-prediction of the heat removal in the clime on which film dryout is calculated to occur.
The AP600 containment evaluation model described in Chapter 4 of WCAP-14407 was amended to incorporate features and enhancements identified by both NRC and Westinghouse review. This amended model was used to perform the sensitivity calculations reported in Chapter 12. Pending feedback from the ongoing NRC reviews and detailed checking of support calculations, no future revisions are planned.
The Westinghouse Electric Corporation copyright notice, proprietary information notice, application for withholding and affidavit are attached.
This submittal contains Westinghouse proprietary information consisting of trade secrets, commercial information or financial information which we consider privileged or confidential pursuant to 9703190046 970314 6
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c NSD-NRC-97-5010 DCP/NRC0760 March 14,1997 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. A non-proprietary copy of the enclosed report will be provided within 60 days of this letter.
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 l
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.
Correspondence with respect to the application for withholding should reference AW-97-1084, and should be addressed to B. A. McIntyre, Manager of Advanced Plant Safety and Licensing, Westinghouse Electric Corporation, P.O. Box 355, Pittsburgh, Pennsylvania, 15230-0355.
hk Y B. A. McIntyre, Manager l
Advanced Plant Safety and Licensing jml Enclosure l
cc:
N. J. Liparulo, Westinghouse (w/o Enclosures)
D. Jackson, NRC E. Throm, NRC
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COPYRIGHT NOTICE j
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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 l
l 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, i
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PROPRIETARY INFORMATION NOTICE i
I' Transmitted herewith are proprietary documents furnished to the NRC in connection with requests for k
generic and/or plant specific review and approval.
The' justification for claiming the information so designated as proprietary is:
(a) the information reveals the distinguishing aspects of a process (or, component, structure, tool, method, etc.) where prevention of its use by any of Westinghouse's i
l competitors without license from Westinghouse constitutes a competitive economic advantage over other companies.
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(c)
Its use by a competitor would reduce his expenditure of resources or improve his competitive position in the design, manufacture, shipment, installation, assurance of quality, or licensing a similar product.
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l These lower case letters refer to the types of information Westinghouse customarily holds in l
confidence identified in Section (4)(ii)(a) through (4)(ii)(f) of the affidavit accompanying this l
transmittal pursuant to 10 CFR2.790(b)(1).
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