ELV-02597, Forwards Proprietary WCAP-12460 & Nonproprietary WCAP-12461, Westinghouse Revised Thermal...(For RTD Bypass Loops) & Proprietary WCAP-12462 & Nonproprietary WCAP-12463, Westinghouse Revised Thermal Design Procedure..

Forwards Proprietary WCAP-12460 & Nonproprietary WCAP-12461, Westinghouse Revised Thermal...(For RTD Bypass Loops) & Proprietary WCAP-12462 & Nonproprietary WCAP-12463, Westinghouse Revised Thermal Design Procedure..

ML20070H263
Person / Time
Site:	Vogtle
Issue date:	03/06/1991
From:	Mccoy C GEORGIA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML19310D315	List: ELV-02597, Forwards Proprietary WCAP-12460 & Nonproprietary WCAP-12461, Westinghouse Revised Thermal...(For RTD Bypass Loops) & Proprietary WCAP-12462 & Nonproprietary WCAP-12463, Westinghouse Revised Thermal Design Procedure.. ML20070H271 ML20070H289 ML20070H301 ML20070H305
References
ELV-02597, ELV-2597, NUDOCS 9103140016
Download: ML20070H263 (2)

Text

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lye *NJume. Georgia Power i voce rwet nv emom exuc wem  ;

March 6, 1991 ELV-02597 0868 Docket Nos. 50-424 l 50-425 O. S, Nuclear Regulatory Commission j ATTN: Document Control Desk l Washington,-D. C. 20555 i

Gentlemen:

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- :V0GTLE ELECTRIC GENERATING PLANT

, REVISED THERMAL DESIGN PROCEDURE INSTRUMENT UNCERTAINTY METHODOLOGY  ;

The. analyses that support the Technical Specifications changes proposed by o Georgia Power Company (GPC) in letter ELV-02166 dated Nor ter 29, 1990,

• utilized the Westinghouse Revised Thermal Design Procedure (RTDP). At a meeting with the NRC staff on February 13, 1991, GPC was requested to provide additional information concerning the application of the RTDP to the Vogtle Electric Generating Plant (VEGP) analyses.

The requested information is contained in the following documents which are enclosed with this letter:

1. 10 copies of WCAP-12460, " WESTINGHOUSE REVISED THERMAL DESIGN PROCEDURE INSTRUMENT UNCERTAINTY METHODOLOGY FOR GEORGIA POWER V0GTLE 1 AND 2 NUCLEAR POWER STATION-(FOR RTD BYPASS LOOPS)" (Proprietary).

2. 10 copies of WCAP-12461, ' WESTINGHOUSE REVISED THERMAL DESIGN PROCEDURE INSTRUMENT UNCERTAINTY METHODOLOGY FOR GEORGIA POWER-V0GTLE 1 AND 2 NUCLEAR POWER STATION (FOR RTD BYPASS LOOPS)" (Non-Proprietary).

3. :10 copies of WCAP-12462, " WESTINGHOUSE REVISED THERMAL DESIGN PROCEDURE' INSTRUMENT UNCERTAINTY METHODOLOGY FOR GEORGIA POWER-V0GTLE 1 AND 2 NUCLEAR POWER STATION (FOR RTD BYPASS LOOP ELIMINATION)" (Proprietary)

4. 10 copies of WCAP-12463, " WESTINGHOUSE REVISED THERMAL DESIGN PROCEDURE INSTRUMENT UNCERTAINTY METHODOLOGY FOR GEORGIA POWER V0GTLE 1 AND 2 NUCLEAR POWER STATION (FOR RTD BYPASS LOOP ELIMINATION)" (Non-Proprietary)

Also enclosed are Westinghouse authorization letters CAW-91-128 and CAW-91-129, accompanying affidavits, Proprietary Information Notices, and Copyright Notices.

910314oo16 91o3o6 ^

G,4 7 " avocn osoooa2< PDR i

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Georgialbwer d t

U. S. Nuclear Regulatory Comission ELV-02597 .

Page 2 Since Items 1 and 3 contain information proprietary to Westinghouse Electric

-Corporation, they are supported by affidavits signed by Westinghouse, the owner of the information. The affidavits set forth the basis on which the information

.may be withheld from public disclosure by the Commission and address with s)ecificity the considerations listed in paragraph (b)(4) of Section 2.790 of 1ie Comission's regulations.

Accordingly, it is res)ectfully requested that the information which is l

-pro)rietary to Westing 1ouse be withheld from public disclosure in accordance witi 10 CFR Section 2.790 of the Commission's regulations.

l Correspondencewithrespecttethecepfrightor-proprietaryaspectsoftheitems listed above or the supporting Westing ouse affidavits should reference l CAW-91-128 or CAW-91-129 and should be addressed to R. P. DiPiazza, Manager of  ;

Operating Plant Licensing Support, Westinghouse Electric crporation, P. O. Box i 355,'Pittsburgh. Pennsylvania 15230-0355.

The'RTDP application to VEGP's VANTAGE-5 safety analyses bounds instrumentatioii i uncertainties associated with or without the use of resistance temperature i detector bypass manifolds; therefore, GPC is transmitting the information for  !

both cases. Please note that these anslyses were completed without an  !

uncertainty allowance for Venturi fouling on flow measurements. This additional uncertainty allowance wil1~ be addressed in a separate letter.

Sincerel ,  !

C. K. McCoy CKM/HWM/gmb-Enclosures-xc: Georaia Power Comoany

,. .Mr. W. B. Shi3 man-L .Mr. P. D..Rusiton 1 l Mr. R. M. Odom- i l

NORMS l U. S. Nuclear Reculatory Commission Mr. S. D. Ebneter, Regional Administrator 1 Mr.' D. S. Hood, Licensing Project Manager, NRR l

Mr. B. R. Bonser, Senior Resident-Inspector, Vogtle ste m l

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