ML17258A788

Forwards Proprietary & Nonproprietary Versions of Low Pressure Turbine Disk Info, in Response to NRC 800225 Request.Proprietary Version Withheld (Ref 10CFR2.790)

ML17258A788
Person / Time
Site:	Ginna
Issue date:	02/12/1981
From:	Maier J ROCHESTER GAS & ELECTRIC CORP.
To:	Eisenhut D Office of Nuclear Reactor Regulation
Shared Package
ML17258A789	List: ML17258A788 ML17258A790 ML17258A791
References
NUDOCS 8102180271
Download: ML17258A788 (6)

Text

H l REGULATORY I)RMATION DISTRIBUTION SYS (RIBS)

ACCESSION NBR:8102180271 DOCBDATE: 81/02/12 NOTARIZED: NO DOCKET FACIL:50 240 Robert Emmet Ginna Nuclear Planti Unit 1F Rochester G 05000244 AUTH INANE AUTHOR AFFILIATION HAIERg J ~ E ~ Rochester Gas 8 Electric Corp, REC IP, NAME RECIPIENT AFFILIATION EISENHUTEDBC. Division of Licensing

SUBJECT:

Forwar ds proprietary 8 nonfor opr ietary versions'f "Low Pressur e Turbine. Disk. Infoi '!. in r esponse.to. NRC 800225.-

requests Proprietary version withhe d (ref 10CFR2 790), ~

SSS. Pied. E am~ )type'B'AV-y DISTRIBUTION CODE$ PA01S COPIES RECEIVED:LTR TITLE: Proprietary Info af ter Issuance

+

of License ENCL

+ SIZED NOTES: copy:SEP Sects Ldr ~ 0500024Ll asHe~ 8~A.'E~7 1

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCLI I0 CODE/NAt<E LTTR ENCL ACTION: CRUTCHF IELD 1 0 CRUTCHF IELD 02 7 7 SNAIDERr R ~ 1 1 INTERNAL: ILE 09 2 2 0 OELD 1 0 REG FIL 01 1 1 EXTERNAL: ACRS 19 16 16 LPDR 1 0 NSIC 1 0 0 )9g gg TOTAL NUMBER OF COPIES REQUIRED:" LTTR + ENCL ~l

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//EN'OCHESTER SR~,':.-.

MAILERGAS AND ELECTRIC CORPORATION A 89 EAST AVENUE, ROCHESTER, N.Y. 14649 JOHN E. TEECPHONC VICE PRES I DENT *RCA coDE 7ld 546-2700 February 12, 1981 Nr. Darrell C. Fisenhut, Acting Director Divison of Operating Reactors Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

Supplemental Information in Response, to NRC Request for Information of February 25, 1980, Relative to Low Pressure Turbine Dis'c Integrity R. E. Ginna Nuclear Power Plant, Unit No. 1 Docket No. 50-244

Dear Nr. Eisenhut:

Enclosed are:

1. One copy Appendix A (Proprietary) Updated responses to Question 1-d.

2. One copy Appendix B (Non-Proprietary) Updated responses to Question 1-d.

Also enclosed are:

1. One copy of Application for Withholding AN-80-3 (Non-Proprietary).

2. One copy of Affidavit (h'on-Proprietary).

The purpose of this letter is to provide you with updated information in response to your request for information of February 25, 1EI80 relative to turbine disc integrity. Our original response dated March 19, 1980 contained the results of site-specific calculations, to respond to guestion 1-d of Chal your letter. These calculations have now been repeated employing a more sophisticated calculational model, which now accounts for thermal and steam bending stresses, and a revised correlation for calculating the crack growth rate.

The results of these calculations are presented in the attach-

'Ã ments which constitute a revision to Apppendix A (proprietary) k pad Appendix B (non-proprietary) of our previous submittal.

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ROCHESTER GAS AND ELECTRIC CORP. SHEET NO.

February 12, 1981 Mr. Darrell C. Eisenhut, Acting Director The attached site specific responses (Appendix A) contain proprietary information of the Nestinghovse Electric Corporation.

A copy of the previously submitted Application for Nithholding Atl-80-('3) dated March 14, 1980 and the associated affidavit is attached and is equally applicable to this new material.

Accordingly, it is requested that the subject Nestinghouse proprietary information be withheld from public disclosure in accordance with the provisions of 10CFR 2.790 of the Commission's regulations.

Correspondence with respect to,the affidavit, or appli-cation for withholding should reference AN-80-(3) and should be addressed to Hr. E. J. Barsness, Manager, CR Disc Program, Nestinghouse Electric Corporation, Steam Turbine Division, N206) Lester Branch Box 9175) Philadelphia, PA 19113.

Very truly yours, Jo n E. Maier Enclosure Subscribed and Sworn to me on this /+~day of February 1981.

SHARON G: CAVALERI lfOTARY PUBLIC, State of N.Y., Monroe County .

Expires March 3019P'J My Commission