ML20215E419

Forwards Rev 1 to Reload Safety Evaluation,Mcguire Nuclear Station,Unit 2 Cycle 4

ML20215E419
Person / Time
Site:	McGuire, Mcguire
Issue date:	06/15/1987
From:	Tucker H DUKE POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML20215E424	List: ML20215E419 ML20215E434
References
TAC-65072, TAC-65073, NUDOCS 8706190364
Download: ML20215E419 (9)

Text

-r

.q-.

.1

,d DUKE POWER GOMPANY P.O. Box 33169

- CHAHLOTTE, N.C. 28242 q

HALH. TUCKER TELEPHONE

..,l'L"","*"A.

m o m sa 1

June 15,'1987-i d

1 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington,.D. C. 20555

Subject:

~ McGuire Nuclear Station Docket Nos. 50-369 and 50-370 McGuire 2/ Cycle 4 Reload Safety Evaluation, Rev. 1 Peaking Factor Limit Report, Rev. 1 i

Gentlement By letter dated April 7, 1987, Duke proposed a technical specification revision in support of the McGuire 2/ Cycle 4 reload.

Contained therein were a Reload Safety Evaluation (RSE) and a Peaking Factor Limit Report (PFLR).

As a result'of damage to fuel assembly P06, a core redesign was initiated. This re-analysis has resulted in revisions to the previously provided RSE and PFLR.

Accordingly, please find attached revised versions of these reports.

Please note that Duke has determined that the existing McGuire specifications as well as proposed revisions remain valid with the revised core design. Currently, criticality is planned for June 25, 1987.

Very truly yours, C/

! nr i

- Hal B. Tucker RLG/83/sbn Attachments j

8706190364 870615

\\

PDR ADOCK 05000370

\\

P PDR M

4D m

e U.*S. Nuc1ccr Regulct:ry Commiccicn June 15, 1987 Page Two i

xc:

(w/o attachments)

Dr. J. Nelson Grace, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. Darl Hood Office of Nuclear Reactor Regulations U. S. Nuclear Regulatory Commission Washington, D. C.

20555 Mr. Dayne Brown, Chief Radiation Protection Section Division of Facility Services Department of Human Resources

'701 Barbour Drive Raleigh, North Carolina 27603-2008 Mr. W. T. Orders NRC Resident Inspector McGuire Nuclear Station i

l

rs '

((

r PEAKING FACTOR LIMIT REPORT FOR MCGUIRE UNIT 2 CYCLE 4 j

RAOC AND BASE LOAD OPERATION This Peaking Factor Limit Report is provided in accordance with Paragraph 6.9.1.9 of the McGuire Unit 2 Technical Specifications.

]

The McGuire Unit 2 Cycle 4 elevation dependent U(z) values for RAOC

'f operation at beginning, middle, and near end-of-life are shown in

]

Figures 1 through 3, respectively.

This information is' sufficient to 1

determine W(z).versus core height for Cycle 4 burnups in the range of 0 j

MWD /MTU.to 13500 MWD /MTU through the use of three point interpolation, j

Th9 McGuire Unit 2 Cycle 4 elevation dependent W(z) values for base load operation between 80% and 100% of rated thermal power with a +5 1

percent AFD about a measured target value at 150, 6000, and 12500 MWD /MTU Cycle 4 burnups are shown in Figures 4 through 6, respectively.

i This.information is sufficient to determine W(z) versus core height for Cycle 4 burnups in the range of 0 MVD/MTU to 13500 MWD /MTU through the use of-three point interpolation.

W(2) values for RAOC and base load operation were calculated using the method described in Part B of Reference 1.

The minimum allowable power level for base load operation, APL for McGuire 2 Cycle'4 is 80 percent of rated thermal power.

b The appropriate W(z) function is used to confirm that the heat flux hot channel factor, Fq(z), will be limited to the Technical Specification values of:

(K(z)) f r P > 0.50 and FMz) $

Fq(z) $ 4.64

[K(z)] for P $ 0.50 The appropriate elevation dependent W(z) values, when applied to a power distribution measured under equilibrium conditions, demonstrates that the initial conditions assumed in the 14CA are met, along with the ECCS acceptance criteria of 10CFR50.46.

(1) WCAP-10216-P-A, Relaxation of Constant Axial Control - Fq Surveillance Technical Specification Revised 6/11/87

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MCGUIRE UNIT 2 CYCLE 4 RAOC W(Z) AT 6000 MWD /MTU TOP AND BOTTOM 15% EXCLUDED AS PER TECH SPEC 4.2.2.2.G

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W a

HEIGHT 810L (FT.)

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(

BASELOAD W(Z) FOR POWERS BETWEEN 80% AND 100% OF RATED THERMAL POWER WITHIN +5% AFD OF THE MEASURED TARGET 6000 MWD /MTU TOP AND BOTTOM 15% EXCLUDED AS PER TECH SPEC 4.2.2 4.G

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• 11.2 1.0000 e 11,4 1.0000

• 11.5 1.0000 e 11.8 g,0000 e 12.0 1.0000 FIGURE 6 MCGUIRE UNIT 2 CYCLE 4 BASELOAD W(Z) FOR POWERS BETWEEN 80% AND 100% OF RATED THERMAL WITHIN +5% AFD OF THE MEASURED TARGET 12500 MWD /MTU

.8 TOP ARD BOTTOM 15% EXCLUDED AS PER TECH SPEC 4.2.2.4 G

.