ML20082P233
| ML20082P233 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 09/03/1991 |
| From: | Skolds J SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20082P236 | List: |
| References | |
| NUDOCS 9109100245 | |
| Download: ML20082P233 (2) | |
Text
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Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC t0555 Gentlemen:
Subject:
VIRGIL C. SUMMER NUCLEAR STATION DOCKET NO. 50/395 OPERATING LICENSE NO. NPF-12 l,
RELOAD NUCLEAR DESIGN METH000 LOGY (NRR 900013)
South Carolina Electric & Gas Company (SCE&G) intends to perform core reload nuclear design analyses "in house" for the Virgil C. Summer Nuclear Station (VCSNS) beginning with Cycle 8.
As such, SCE&G has prepared a topical report which demonstrates SCE&G's ability to perform the reload calculations using standard Westinghouse methodologies previously approved by the NRC. Six copies of the report, "huclear Physics Methodology for Reload Design," dated July 1991, are enclosed.
The topical report describes the computer programs and physics models used by SCE&G to analyze the VCSNS core. Comparisons between predictions and operating data (including startup physics test measurements) for Cycles 3,4, and 5 are utilized to demonstrate SCE&G's qualifications to perform the reload design calculations for VCSNS. Because standard Westinghouse methodology is used in all of the calculations, a plant specific uncertainty analysis is not included in the topical. Westinghouse has thoroughly reviewed the report and all supportin calculations and has concluded that SCELG correctly applied the methodolo ies.
The methodology used and described in the topical report reflects current Westinghouse practices. SCE&G intends to upgrade the reload nuclear design methodology for VCSNS such that it remains current with the latest approved 4
calculational techniques employed by Westinghouse. SCE&G will accomplish this through involvement in a technology exchange program with Westinghouse.
SCE&G has utilized this program since May 1987, to obtain reload core design computer programs and methodologies that have been previously approved by the NRC.
As previously mentioned, SCE&G intends to begin formal application of the reload design methodology to support the Cycle 8 fuel load, which is scheduled for the spring of 1993. To support this schedule, SCE&G requests that the NRC review and approve the topical report by September 1, 1992.
Very truly yours, p
John L. Skolds EWR:JLS:1cd 8 I Enclosure d
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t Document Control Desk NRR 900013 Page 2 of 2 c:
- 0. W. Dixon Jr.
R. R. Mahan R. J. White w/ Attachment S. D. Ebneter w/ Attachment G. F. Wunder w/ Attachment General Managers NRC Resident inspector (w/ Attachment)
J. B. Knotts Jr.
(w/ Attachment)
B. L. Johnson NSRC (w/ Attachment)
File (810.37)
(w/ Attachment)
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NUCLEAR EXCELLENCE - A SUMMER TRADITION!