ML20210G073

Forwards Rev 1 to Safety Evaluation for Operation of Catawba Units 1 & 2 W/Positive Moderator Coefficient, Clarifying & Supplementing 860606 & 0715 Reload Submittals

ML20210G073
Person / Time
Site:	Catawba
Issue date:	09/16/1986
From:	Tucker H DUKE POWER CO.
To:	Harold Denton, Youngblood B Office of Nuclear Reactor Regulation
Shared Package
ML20210G079	List: ML20210G073 ML20210G100
References
NUDOCS 8609250329
Download: ML20210G073 (2)

Text

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• DUKE POWER GOMPANY P.O. Box 33180 CHARLOTTE, N.C. 28242 HAL H. TI1CKER TELEPHONE September 16, 1986 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Attention: Mr. B. J. Youngblood, Project Director PWR Project Directorate No. 4 Re: Catawba Nuclear Station, Unit 1 Docket No. 50-413 Technical Specifications Amendment for Unit 1/ Cycle 2 Reload

Dear Mr. Denton:

Enclosed is clarification for Attachment 5 which was transmitted by my letter of July 15, 1986.

l Attachment 5 to the July 15, 1986 letter transmitted the report " Safety Evaluation for Operation of Catawba Units 1 and 2 With a Positive Moderator Coefficient".

-Upon further review of this report several errors were identified. We enclose herewith the corrected report (Revision 1).

. The changes contained in the Revision I report are noted by a bar in the right l margin and are summarized as follows:

Section 2.III.H Rupture of a Main Feedwater Pipe - Method of Analysis: The second sentence referencing 1971 decay heat was removed since the 1971 decay heat model was used in the previous analysis.

Section 2.III.I Control Rod Ejection - Results and

Conclusions:

The peak clad average temperature should be 2696, not 2683 degrees F as previously reported.

Section 2.III.J Accidental Depressurization of the Reactor Coolant System - Results and

Conclusions:

The reactor trip should be low pressurizer pressure, not over temperature delta-T as previously reported.

Section 3

Conclusions:

The first sentence should state Catawba, not McGuire as previously reported.

This request is a supplement to the June 6, 1986 and July 15, 1986 reload submittals for Catawba Unit 1; therefore no additional fees have been remitted with this submittal.

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Mr. Harald R. Denten, Dir:ctcr September 16, 1986 Page Two Pursuant to 10 CFR 50.91 (b) (1) the appropriate South Carolina State Official is being provided a copy of this amendment request.

Very truly yours, a

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Hal B. Tucker RWO/26/slb Attachment xc: Dr. J. Nelson Grace, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgfa 30323 Mr. Heyward Shealy, Chief Bureau of Radiological Health South Carolina Department of Health &

, Environmental Control 2600 Bull Street Columbia, South Carolina 29201 INPO Records Center Suite 1500 1100 Circle 75 Parkway Atlanta, Georgia 30339 i

l American Nuclear Insurers e/o Dottie Sherman, ANI Library The Exchange, Suite 245 270 Farmington Avenue i Farmington, CT 06032 l M&M Nuclear Consultants 1221 Avenue of the Americas New York, New York 10020 NRC Resident Inspector Catawba Nuclear Station l

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