ML20093K810

Forwards Peaking Factor Limit Rept for Cycle 2 Base Load Operation in Burnup Range of 1,200 to 10,200 Mwd/Mtu,Per 840614 Application to Amend Licenses NPF-9 & NPF-17.Check Encl

ML20093K810
Person / Time
Site:	McGuire, Mcguire
Issue date:	07/20/1984
From:	Tucker H DUKE POWER CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
References
TAC-55177, TAC-55178, NUDOCS 8407310202
Download: ML20093K810 (8)

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iV DUKE POWER GOMPANY P.O. Box 33189

' CliARLOTrE. N.C. 28242 -

HALH. TUCKER ruternoxz ena,emesseur (704) 07:>4531 July 20, 1984 mu. --

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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

Subject:

McGuire Nuclear Station Docket Nos. 50-369 and 50-370 Base Load Operation Technical Specifications

Dear Mr. Denton:

My letter of June 14, 1984 submitted proposed license amendments to Facility Operating Licenses NPF-9 and NPF-17 for McGuire Nuclear Station, Units 1 and 2, respectively. The amendments (which werel subsequently approved on June 21,1984) expanded the Power Distribution Limits section of the McGuire Unit 1 Techni:a1 Specifications to include Base Load Operation in addition to the previously approved RAOC Operation.

The McGuire 1 Cycle 2 Peaking Factor Limit Report format and content were amended to provide information which permits the exact determination of W(z) versus core height as a function of cycle burnup through the use of three point interpolation of three sets of burnup specific data. The report provides the elevation dependent W(z) values that are to be used as inputs to define the appropriate fitting coef-ficients for W(z) interpolations to be performed as a function of cycle burnup and axial elevation for RAOC and Base Load Operation,'and the value for APLND. The June 14, 1984 submittal (Attachment 2A) included an amended McGuire Unit 1/ Cycle 2 Peaking Factor Limit Report which contained the W(z) functions for RAOC Operation during Cycle 2 and Base Load Operation in the Cycle 2 burnup range of 1200 to 6000 MWD /MTU, and indicated that the base load W(z) functions for the remainder of Cycle 2 (Burnups greater than 6000 MWD /MTU) would be submitted in July, 1984.

Attached is the Peaking Factor Limit Report for McGuire Unit 1/ Cycle 2 Base Load Operation in the Cycle 2 burnup range of 1200 to 10,200 MWD /MTU. This information has been derived for Base Load Operation with a 3 percent AFD about a measured target in the power interval from 80 to 100 percent of rated thermal power. The

.W(z) functions for Cycle 2 burnups of 1200, 3000, and 6000 MWD /MTU were previously transmitted in the June 14, 1984 submittal. These functions are included in Figures 1--3 of the attached report for' completeness. W(z) functions for the re-mainder of Cycle 2 (8000 and 9500 MWD /MTU) are given in figures 4 and 5.

Using the W(z) functions shown in figures 1-5, the W(z) values for Cycle burnups between 1200 and 10,200 MWD /MTU can be determined using three point interpolation (for three point interpolation, the W(z) values from the three burnup steps closest to the measured burnup are used).

8407310202 840720 PDR ADOCK 05000369 Apf 4g0 P

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E g-2 In addition,ithe June 14. 1984 submittal indicated that'the application contained one Class III License Amendment for McGuire Unit 1 and one Class I Amendment for McGuire' Unit 2.(pursuant to 10 CFR 170.22), and that consequently.

!a check in the amount of $4,400.00'would be forwarded separately in accordance with 10 CFR 170.12. This check is enclosed.

Very-truly yours, hh l

f, Hal B. Tucker PBN:glb Attachment Enclosure cc:

(w/ attachment)

Mr. James'P. O'Reilly, Regional Administrator U.1S. Nuclear Regulatory Commission Region II, 101 Marietta Street,164, Suite 2900 Atlanta, Georgia 30323 Mr. Dayne Brown, Chief Radiation Protection Branch Division of Facility' Services Department of Human Resources P. O. Box 12200 Raleigh, North Carolina 27605 Mr. W. T. Orders Senior Resident Inspector McGuire Nuclear Station 4

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-PEAXING FACTOR LIMIT REPORT'FOR MCGUIRE UNIT 1, CYCLE 2 BASE LOAD OPERATION This Peaking Factor Limit Rap";rt 'is provided in accordance with Paragraph 6.9.1.9 of_ the McGuire Unit 1 Technied Specifications.

The McGuire Unit 1 Cycle 2 'elevstion dependent W(z) values for base load operation between 80% and 100% of rated thermal power with a 3 percent AFD about a measured target value-at 1200, 3000, 6C00, 8000, and 9500 MWD /MTU Cycle 2 burnups are shown in'Fi W(z) gures 1 through 5 respectively. This information is sufficient to determine versus core height for tycle 2 burnups in the range of 1200 MWD /MTU to 10,200 MWD /MTV through the. use of three point interpolation. W(z) was calculated using the method described in Part 8 of Reference 1.

The minimum allowable power level for ba:;e load operation, APLND for McGuire 1 Cycle 2 is 80 percent of rated thermal power. The appropriate W(z) function is used to confirm that the heat flux hot channel factor, F (z) will be limited to the Technical Specification values of:

9

~2.15 F (z) 1 P

[K(z)] for P > 0.50 and 9

F (z) 1 4.30 [K(z)] for P 1 0.50 q

The appropriate elevation dependent W(z) values, when appliea to a power distribution measured under equilibrium conditions, demonstrates that the initial conditions assumed in the LOCA are met, along with the ECCS acceptance criteria of 10CFR50.46.

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