ML20012B242

Forwards Cycle 3 Radial Peaking Factor Limit Rept & Elevation Dependent Peaking Factor Vs Core Height Graph

ML20012B242
Person / Time
Site:	Vogtle
Issue date:	03/06/1990
From:	Hairston W GEORGIA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ELV-01316, ELV-1316, NUDOCS 9003140047
Download: ML20012B242 (3)

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"***""* March 6, 1990 Docket No. 50 424 U. S. Nuclear Regulatory Commission ELV-01316 ATTN: Document Control Desk 395 Washington, DC 20555 Gentlemen:

i V0GTLE ELECTRIC GENERATING PLANT RADIAL. PEAKING FACTOR LIMIT REPORT a Enclosed is the Vogtle 1, Cycle 3 Radial Peaking Factor Limit Report. This report is provided in accordance with Paragraph 6.8.1.6 of the Vogtle Units 1 and 2 Technical Specifications. The enclosure also contains a copy of the elevation dependent peaking factor versus core height graph for Vogtle 1, Cycle 3 which is being submitted in support of the subject report.

Please contact this office if you have any questions.

Sincerely, l Uh) . N S

" 't W. G. Hairston, 111

, i WGH/TMM:kdc

-Enc 1cau/o Radial Peaking Fr.ctor Limit Rept ri  !{

ct; fi,1Eg.i d .L' inter C.c3 gaily Mr. C. X, McCoy Mr. G. Bockhold, Jr.

Mr. P. D. Rushton Mr. R. M. Odom NORMS U. S. Nuclear Reaulatory Commission Mr. S. D. Ebneter, Regional Administrator Mr. D. B. Matthews, Director, Project Directorate 11-3 Mr. R. F. Aiello, Senior Resident inspector, Vogtle m Oil

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ENCLOSURE j V0GTLE ELECTRIC GENERATING PLANT RADIAL PEAKING FACTOR LIMIT REPORT i

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This Radial Peaking Factor Limit Report for Vogtle 1, Cycle 3 is provided i in accordance with Paragraph 6.8.1.6 of the Vogtle Units 1 and 2 Technical Specifications. .

- o The Fxy limits for_ RATED THERMAL POWER within specified core planes for l Cycle 3 shall- be: i RTP  ;

1. FxE less than or equal to 1.775 for all core planes containing Bank "D control rods.  ;

2. For all unrodded core planes:

RTP Fxy less than or equal to 1.705 up to core elevations of 3.7 ft.

• RTP .

Fx less than or equal to 1.660 for core elevations between 3.7 ft and  !

8.y1. f t .

RTP  :

Fxy less than or equal to 1.765 for core elevations above 8.l'f t.  ;

• These. Fxy(z). limits are used to confirm that the heat flux hot channel  :

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factor Fq(z)'will be limited to the Technical Specification values of: i Fq (z) s [2.30/Pj[K(z)) for P > 0.5-and.

.Fq(z) i 4.G0~(K(z)) for P.1 0.5

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assuming the inost limiting axial power distrioutions expected to resul' 2 from the intertion and removal of Control Banks C and D during operations  ;

including the accompanying variations in the axial xenon and power li

,@. distributions as described in the "Fower Distribution Control ar.d trad ,

Follo_ wing Procedures," WCAP-8395, September 1974 Therefore, tht.se Fxy i

limits provide assurance that the initial co w tions u sumed in the tocA J analysis are mat and the ECCS acceptace criterion limit cf 2200M for peak I clad temperature is not' exceeded.

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ENCLOSURE V0GTLE ELECTRIC GENERATING PLANT RADIAL PEAKING FACTOR LIMIT REPORT 2.4 ,,,,,,,y g;,,,,,

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r CORE HEIGHT FX) Likii. --

i BELOW 3.7 FT. 1.705 1.2 '

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3.7 10 8.1 FT. 1.660

' ABOVE 6.1 FT. 1.765 '".  !

• 0 2 4 6 10 12 CORE HEIGHT (FEET) 8 T

MAXIMUM (fgxpREL) VERSUS CORE HEIGHT DURING NORMAL OPERATION FOR V0GTLE 1. CYCLE 3 l-i

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