ML20245G251

Forwards Revised Curves for Heatup & Cooldown Limitations to Agree W/Correct Westinghouse Data Attached to Discussed During 890615 Telcon

ML20245G251
Person / Time
Site:	McGuire, Mcguire
Issue date:	06/19/1989
From:	Tucker H DUKE POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
TAC-71963, TAC-71964, NUDOCS 8906290068
Download: ML20245G251 (5)

Text

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4, DUKE POWER GOMPANY P.O. Dox 33189 j OHARLOTTE. N.O. 28242 ]

.HALB. TUCKER rzternoxe 1 vmm eme. men (704) 073-4 sat tutMJL,LA PhDDUOTION

^1, June 19, 1989 U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Document Control Desk Subj ect: McGuire Nuclear Station j Docket Nos. 50-369, 370 (TAC's-71963/71964)

In letters dated January 22, 1989 and May 17, 1989 I submitted revised heat-up 1 and cooldown limitation curves for McGuire Units 1 and 2. These were discussed with NRC staff snembers D. S. Hood and B. J. Elliot in a telephone conference on June 15, 1989.

As a result of this call, I have attached revised curves for McGuire Units 1 and 2 heatup limitations (T.S. Figures 3.4-2 and 3.4-3) and Unit I cooldown limitations (T.S. Figure 3.4-4). This revision changes the footnote for RT after 10EFPY at 1/4 T and 3/4 T on Figures 3.4-2 and 3.4-4 to agree with theET correct Westinghouse data originally attached to my January 22 letter.

Additionally, as discussed on June 15, the Unit I curver have also been revised to accurately reflect the Westinghouse data developed using Regulatory Guide 1.99, Rev. 2. This Westinghouse data was contained in a report dated November 1988 and attached to my original submittal of January 22. Finally, the Unit 2 heatup curve (Figure 3.4-3) is revised to correct a printing error and to ensure agreement with WCAP-11029.

Please contact J. S. Warren at (704) 373-2627 if there are further questions or conunents on this manner.

Very truly yours, M '

llal B. Tucker JSW361/lcs 8906290068 890619 " hp2 PDR ADOCK 05000369t j P PNUf'f I ,

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U. S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation j Region II U. S. Nuclear Regulatory Commission 101 Marietta Street, NW, Suite 2900 . Washington, D.C. 20555

' Atlanta, Georgia 30323 ,

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CONT AINS MARGIN FOR POSSIBLE PHOSPHORUS CONTENT--0.013wt%

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CONTAINS MAROIN FOR POSSIBLE PHOSPHORUS CONTENT-4.013wt%

INSTRUMENT ERRORS. RTNDT INITI AL-0*F 1/4T,166.5'F RTNDT AFTER 10 EFPY 3/47,113*F FIGURE 3.4-4 McGUIRE UNIT 1, REACTOR COOLANT SYSTEM, COOLDOWN LIMITATIONS NRC RG 1.99 REV 2 APPLICABLE FOR THE FIRST 10 EFPY

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