ML20082R793

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Application for Amend to Licenses NPF-9 & NPF-17,revising Pages to 831118 Application Re RCS Flow Rate Requirements
ML20082R793
Person / Time
Site: McGuire, Mcguire  Duke Energy icon.png
Issue date: 12/08/1983
From: Tucker H
DUKE POWER CO.
To: Adensam E, Harold Denton
Office of Nuclear Reactor Regulation
Shared Package
ML20082R795 List:
References
TAC-53214, TAC-53215, NUDOCS 8312130302
Download: ML20082R793 (1)


Text

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DUKE Powen GOMPANY P.O. HOX 33180 CHAMLOTTE, N.C. 28242 HAL H. TIJCKER TE LEPlf0NE vws emmessen (704) 373 4533

====r- - December 8, 1983 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Attention: Ms. E. G. Adensam, Chief Licensing Branch No. 4 Re: McGuire Nuclear Station Docket Nos. 50-369, 50-370

Dear Sir:

My letter of November 18, 1983 contained proposed amendments to Facility Operating Licenses NPF-9 and NPF-17. In particular, changes in the Reactor l

Coolant System flow rate requirements were proposed. Attachments 1 and 2 are revised pages to the November 18, 1983 submittal.

Attachment I revises the propo.;ed limits in the November 18, 1983 submittal.

The flow required for operation at 100 percent rated thermal power (RTP) is the same as in the previous submittal, but the allowable power levels for less than full flow have been reduced in the conservative direction. This revised figure requires a 2 percent reduction in power level for every 1 percent reduction in measured flow below full flow. This relationship has been previously reviewed and accepted in an earlier NRC Safety Evaluation Report on McGuire. (Re: E. G. Adensam letter dated November 23, 1981 to William O. Parker, transmitting Amendment 9 to McGuire Unit 1 Facility Operating License, NPF-9.) .

Attachment 2 is a revised insert to be put in the BASES (Page B 3/4 2-4) to show the breakdown of the 9.1 percent thert:,a1 margin available to offset rod bow penalties. This is provided in response to a request by the NRC Staff.

Please advise if there are additional questions concerning this matter.

I Very truly yours,

&$b/g .

Hal B. Tucker GAC/php Attachments cc: Mr. James P. O'Reilly, Regional Administrator Mr. W. T. Orders U. S. Nuclear Regulatory Commission NRC Resident Inspector Region 71 McGuire Nuclear Station 101 Marietta Street NW, Suite 2900 Atlanta, Georgia 30303 C312130302 831200 PDR ADOCK 05000369

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