Part 21 Report - 1998-182

ACCESSION #: 9804300128 SIEMENS April 1, 1998 NRC:98:020 Document Control Desk ATTN: Chief, Planning, Program and Management Support Branch U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Interim Report of Evaluation of a Deviation Pursuant to 10 CFR 21.21(a)(2) Ref.: 1. Letter, J. S. Holm (SPC) to Document Control Desk (NRC), "Interim Report of Evaluation of a Deviation Pursuant to 10 CFR 21.21 (a)(2)," NRC:98:001, January 15, 1998. Ref.: 2. Letter, J. F Mallay (SPC) to Document Control Desk (NRC), "RELAP4 Excessive Variability, NRC:98:016, March 17, 1998. The following interim report was provided to the NRC by the Reference 1 letter pursuant to the requirements of 10 CFR 21 to submit an Interim report on issues for which an evaluation will not be completed within 60 days of discovery: 98-001 "RELAP4 Excessive Variability." Additional information regarding the evaluation was provided in Reference 2. Reference 1 indicated that the scheduled completion date for the evaluation was April 3, 1998. The last portion of the evaluation is underway, and the revised completion date is May 1, 1998. The evaluation addresses the impact on all plants for which SPC performs LBLOCA analysis, all of which have been completed except one. The results to date are consistent with the discussion in Reference 2, which indicated that the peak cladding temperature was lower after correcting for the deviation. If you have any questions or if I can be of further assistance, please call me at (509) 375-8757. Very truly yours, James F. Mallay, Director Regulatory Affairs /arn/jak cc: Mr. E. Y. Wang (USNRC) Project No. 702 Siemens Power Corporation Nuclear Division 2101 Horn Rapids Road Tel: (509) 375-8100 Engineering & Manufacturing P.O. Box 130 Fax: (509) 375-8402 Richland, WA 99352-0130 *** END OF DOCUMENT ***

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