ML20029A403
| ML20029A403 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 02/15/1991 |
| From: | Tuckman M DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TAC-79337, NUDOCS 9102210306 | |
| Download: ML20029A403 (3) | |
Text
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%Irar Havr<nwin C :ariour N r llUul.!nni livin?3 3GI DUKEPOWER February 15, 1991 U.S. Nuclear Regulatory Commission ATfN: Document Control Desk Washington, D.C. 20555
Subject:
McGuire Nucicar Station Docket Nos. 50-309 and -370 Flux Map Margins to Technical Specification Limits for Unit 1 Cycle 7 (TAC No. 79337)
Reference:
Letter from M.S. Tuckman to NRC, " Unit 1 Cycle 7 Moveable Incote Detector Thimb1n Reduction", dated December 19, 1990 Gentlemen On December 19 1990 Duko Power submitted a proposed amendment to the McGuire Technical Specifications to allow a reduction in the minimum number of moveable incoro detector thimbles required from 75% to 50% for the remainder of McGuire Unit 1 Cycle 7.
Recently, Mr. T.A. Rood of the NRC requested additional flux core map data in support of the proposed amendment. Acordingly, please find attached a tabic containing the requested ir tormation.
For recent flux maps performed at or near 100% powor, Table 1 contains a summary of map number, minimum margin to the Technical Specification F limit, the fuel g
assembly number and location of the minimum margin, minimum margin t.o the Technical Specification F limit, and the fuel assembly number and g
location of the minimum margin.
If you have any questions on the nttached data, please call L.J. Rudy at (704) 373-3413.
Very truly yours,
-M. S. Tuckman 1,JR/s Attachment 6
0 gi 9102210306 910215 2
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. Document. Control Desk FebruaryL15,;1991 Pago 2' F
xc:- (W/ Attachment):
Mr. S.D. Ebneter 1 Regional Administrator
- U.S. Nuclear Regulatory Commission Region--II-101-Marietta St., NW, Suite 2900 LAtlanta, Georgia 30329 5
Mr lDayne Brown, Chief Radiation Protection Branch Division of Facility Services Department of Iluman -Services 701 Barbout Drive Raleigh, N.C. 27603-2008 Mr. ' T. A. Reed Project Manager Office-ofl Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington,- D.C. 20555
'Mr. P.K. VanDoorn1 NRC Ser sor Fesident Inspector McGuiro % 1<:ar Station
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TABLE 1 Flux Map Margins to Technical Specification Limits for Unit 1 Cycle 7 Map ll Margin to F Assembly Il Margin to F Assembly II g;
q Axial /ilor Loc'n llor Loc'n 16
-5.610'5 449 8.44%
35 34/D-13 11 - 1 3
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-5.0441%
449 8.82%
449 33/D-13 D-13 18
-7.8930%
291 8.57%
352 31/L-08 J 06 21
-7.7568%
291 7.52%
321 32/L-08 K-07 27
-6.2299%
338 5.92%
338 23/K-07 K-07 28
+0.0649%
307 5.81%
339 24/L-08 K-07 30
-2.8600%
341 6.05%
339 16/K-09 K-07 39
+0.5494%
342 5.27%
339 15/K-09 K-07 40
-2.5652%
342 5.72%
339 14/K-09 K-07
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