Part 21 Report - 1997-473

ACCESSION #: 9801280162 SIEMENS January 19, 1998 NRC:98:005 Document Control Desk ATTN: Chief, Planning, Program and Management Support Branch U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Request for Review of ANFB-10 Critical Power Correlation Ref.: 1. Letter, H. D. Curet (SPC) to NRC Document Control Desk, "Request for Review of ANFB-10 Critical Power Correlation, ANF- 1997(P), Revision 0," HDC:97:119, October 30, 1997. SPC has determined that clarification is needed regarding two lines found on page 2-9 of the topical report EMF-1997(P). The two lines that require clarification are: Let H = nodal heated perimeter P = nodal wetted perimeter. The clarification first requires a footnote to the word "nodal" for the final approved version of the topical report. Specifically, this footnote will state: "The ATRIUM-10 considers two regions for the parameter RATIO, an upper region and a lower region. The upper region is treated as one node in which 83 fueled rods contribute to the heated and wetted perimeter. The lower region is treated as one node in which 91 fueled rods contribute to the heated and wetted perimeter." Fifteen copies of the edited page 2-9, which includes the incorporation of changes to clarify the quantitative RATIO for ATRIUM-10 fuel, are enclosed. Brackets have been used to mark proprietary material. The edited pages will be included in the published (A) version of the approved topical report. The affidavit provided with the original topical submittal provides the necessary information required by 10 CFR 2.790(b) to support the withholding of the enclosed information from public disclosure. Siemens Power Corporation Nuclear Division 2101 Horn Rapids Road Engineering & Manufacturing P.O. Box 130 Richland, WA 99352-0130 Tel: (509) 375-8100 Fax: (509) 375-8402 Chief, Planning, Program and Management Support Branch NRC:98:005 January 19, 1998 Page 2 If you have any questions or if I can be of further assistance, please call me at (509) 375-8563. Very truly yours, H. Donald Curet, Manager Product Licensing /arn Enclosures cc: Mr. T. E. Collins (USNRC) Mr. T. L. Huang (USNRC) Mr. L. E. Phillips (USNRC) Mr. E. Y. Wang (USNRC) Project No. 702 *** END OF DOCUMENT ***

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