View source for NSD-NRC-96-4871, Forwards Proprietary Rev 1 to Topical Rept WCAP-14171, Wcobra/Trac Applicability to AP600 Large-Break Loss of Coolant Accident. Topical Rept WCAP-14171 Withheld (Ref 10CFR2.790)

{{Adams
| number = ML20129H631
| issue date = 10/30/1996
| title = Forwards Proprietary Rev 1 to Topical Rept WCAP-14171, Wcobra/Trac Applicability to AP600 Large-Break Loss of Coolant Accident. Topical Rept WCAP-14171 Withheld (Ref 10CFR2.790)
| author name = Mcintyre B
| author affiliation = WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
| addressee name = Quay T
| addressee affiliation = NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
| docket = 05200003
| license number = 
| contact person = 
| document report number = NSD-NRC-96-4871, NUDOCS 9611010281
| package number = ML19353D924
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE
| page count = 4
}}

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i Westinghouse                Energy Systems                                                 Ba 355 Pittsburgh Pennsylvania 15230-0355 Electric Corporation NSD-NRC-96-4871                                            <
DCP/NRC0648                                                !
Docket No.: STN-52-003                                     l October 30,1996 Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555 ATTENTION:              T.R. QUAY

==SUBJECT:==
HCOBRA/ TRAC APPLICABILITY TO AP600 LARGE-BREAK LOSS OF COOLANT ACCIDENT, WCAP-14171, REVISION 1 l          

==REFERENCE:==
Letter, R. C. Jones, Jr. (USNRC) to N. J. Liparulo (E), " Acceptance for l                                  Referencing of the Topical Report, WCAP-12945 (P), Westinghouse Code
!                                  Qualification Document for Best-Estimate Loss-of-Coolant Analysis," June 28, 1996 l
l

==Dear Mr. Quay:==

Enclosed is Revision I to Westinghouse Topical Report WCAP-14171, "ECOBRA/ TRAC                                                          ;
!          Applicability to AP600 Large Break Loss of Coolant Accident." This revision superceeds Revision 0                                        :
!          of the report and incorporates changes as discussed during a March 15,1996 meeting between Westinghouse and NRC staff.
i
!          This revision includes changes to the LBLOCA analysis methodology related to complying with the NRC approved LBLOCA methodology (Reference 1). New material provided in the report includes:
j          Chapter 2          -
Revision and finalization of the LBLOCA Phenomena Identification and Ranking Table (PIRT). This revision incorporates NRC comments. This
                    .              chapter also includes updated 3-loop plant and benchmark AP600 calculations using the approved EC/T code version.
i Chapter 3          -
This chapter presents revised simulations of CCTF test run 58 and UPTF test 21.
l l          Chapter 4          -
This chapter has been revised to describe the application of the approved best-estimate LBLOCA methodology (Reference 1) to AP600. Chapter 4 establishes the procedure to calculate peak clad temperature (PCT) at the 95th percentile, consistent with the approved methodology.                                                           ,
: e. g 9611010281 961030                                                                                                       .
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,           PDR           ADOCK 05200003                                                                                                         /
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l NSD-NRC-96-4871 DCP/NRC0648                                                                October 30,1996 The completion of Revision 1 of this report addresses the following open items from the NRC Supplemental Draft Safety Evaluation Report (SDSER):
l l      21.6.3-1          -       This item is addressed in Chapter 4 of the report 21.6.3-2          -       This item is addressed in Chapter 2 of the report 21.6.3-3          -       This item is addressed in Chapter 4 of the report 21.6.3-4          -       This item is addressed in Chapter 3 of the report l      21.6.3-5          -       This item is addressed in Chapter 3 of the report 1
21.6.3-6          -       This item is addressed in Chapter 3 of the report l      21.6.3-7          -       This item is addressed in Chapter 3 of the report
!      The Westinghouse Electric Corporation copyright notice, proprietary information notice, application j      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           >
l 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 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-96-1030, and should be addressed to Brian A. McIntyre, Manager of Advanced Plant Safety and Licensing, Westinghouse Electric Corporation, P.O. Box 355, Pittsburgh, Pennsylvania, 15230-0355.
l       Please contact John C. Butler on (412) 374-5268 if you have any questions concerning this transmittal.
b Brian A.Y$
McIntyre, M nager Advanced Plant Safety and Licensing l
l       /nja Enclosure Attachment cc:     T. Kenyon, NRC (w/o Enclosures / Attachments)
B. Iluffman, NRC (SE)
L. Lois, NRC (IE)
P. Boehnert, ACRS (5E)
N. J. Liparuto, Westinghouse (w/o Enclosures / Attachments) 2984A L

I l                                                      COPYRIGHT NOTICE The reports transmitted herewith each bear a Westinghouse copyright notice. The NRC is pennitted 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                         l restrictions on public disclosure to the extent such information has been identified as proprietary by J
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 l             appropriate docket files in the public document room in Washington, D.C. and in local public                      ,
i             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.
s l
!                                                                                                                               i l
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PROPRIETARY INFORMATION NOTICE 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 that was contained within the brackets in the proprietary versions having been deleted).
The justification for claiming the infonnation 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        I 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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