ML17324A799

Forwards Rev 1 to Proprietary XN-NF-85-68(P), DC Cook Unit 2 Limiting Break Loca/Eccs Analysis,10% Steam Generator Tube Plugging & K(Z) Curve. Rev Reflects Changes to Reflood Correlation Per NRC Concerns

ML17324A799
Person / Time
Site:	Cook
Issue date:	04/24/1986
From:	Ward G SIEMENS POWER CORP. (FORMERLY SIEMENS NUCLEAR POWER
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML17324A802	List: ML17324A799
References
GNW:057:86, GNW:57:86, NUDOCS 8604280072
Download: ML17324A799 (5)

Text

F l j I ) I J ' + J' REQULATO INPORNATltlON t DIST~RIDUTI ON .. STER I 5 IDS)1 r j i') ( I ij 1 ACCESSION NBR: 8604280072 DOC. DATE: 86/04/24 NOTARIZED: NO DOCKET FACIL: 50-3ih Donald C. Cook Nuclear Power Planti Unit 2i Indiana 5 050003ib AUTH. NANE AUTHOR AFFILIATION MARDi G. N. Exxon Nuclear Co. i Inc. (subs. of Exxon Corp. )

REC IP. NAl')E RECIPIENT AFFILIATION DENTONi H. R. Office of Nuclear Reactor Regulationi Director (post 85ii25

SUBJECT:

Forwards Rev i to proprietarM XN-NF-85-68(P)i "DC Cook Unit 2 Limiting Break LOCA/ECCS Ana)assisi i0/ Steam Generator Tube Plugging 5 K(Z) Curve. " Rev reflects changes to ref lood correlation per NRC concerns.

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>; II E 'II 'MV > 4'I II E@ON NUCLEAR COMPANY, INC. 2101 HORN RAPIDS ROAD. PO BOX 130, RICHLAND,WA 99352 1509) 375.8100 TELEXL 15 2878 April 24, 1986 GNW:057:86 Donald C. Cook Nuclear Plant No. 2 Docket No. 50-316 License No. DPR-74 TRANSHITTAL OF RESPONSES TO NRC QUESTIONS IN SUPPORT OF UNIT 2 OPERATION Nr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Subject:

Transmittal of Donald C. Cook Unit 2 Limiting Break LOCA/ECCS Analysis, Revision l.

Reference:

Letter from R.A. Copeland to Harold R. Denton dated October 3, 1985 (RAC:067:85).

Dear Nr. Denton:

Enclosed are five copies of the Exxon Nuclear Company technical report XN-NF-85-68(P), Revision 1, entitled "Donald C. Cook Unit 2 Limiting Break LOCA/ECCS Analysis, 10% Steam Generator Tube Plugging and K(z)

Curve," which supports operation of the D.C. Cook Unit 2 Nuclear Plant.

At the request of American Electric Power Service Company (AEPSC), this report is being transmitted directly by Exxon Nuclear.

This revision reflects changes which have been made to the reflood correlation used in the analysis. The reflood correlations were developed by Exxon Nuclear based on the Exxon Nuclear Fuel Cooling Test Facility data. The changes in the reflood correlation were made to resolve NRC concerns which arose during the review of these correlations. Verbal approval has been received from the NRC reviewer to use these correlations as modified.

Exxon Nuclear Company considers information contained in the enclosed technical report to be proprietary. The Affidavit provided with the

" 860428 280072 8604P4

~DR DOCK 050003gg p

PDR AN AFFIUATE OF EXXON CORPORATION

H. R. Denton GNW:057:86 reference letter provides the necessary information to allow the withholding of the responses from public disclosure as required by 10 CFR 2.790(b).

If you have any questions regarding this transmittal, please contact Hr. James G. Feinstein of AEPSC at (614) 233-2040.

Yours very ruly, G. N. Ward, anager Reload Licensing min cc: D. L. Wiggington (NRC) (W/Att)

J. Watt (NRC) (W/Att)

N. P. Alexich (AEPSC)

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