NLS2006097, Annual Report of Changes and Errors in Emergency Core Cooling System Evaluation Models

Annual Report of Changes and Errors in Emergency Core Cooling System Evaluation Models

ML070040191
Person / Time
Site:	Cooper
Issue date:	12/28/2006
From:	Fleming P Nebraska Public Power District (NPPD)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NLS2006097
Download: ML070040191 (3)

Text

H Nebraska Public Power District Always there when you need us 50.46(a)(3)(ii)

NLS2006097 December 28, 2006 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001

Subject:

Annual Report of Changes and Errors in Emergency Core Cooling System Evaluation Models Cooper Nuclear Station, Docket No. 50-298, DPR-46

Reference:

Letter from Paul Fleming, Nebraska Public Power District, to U.S. Nuclear Regulatory Commission, dated October 23, 2006, "Reporting of Changes in Emergency Core Cooling System Evaluation Models" The purpose of this letter is to submit the 2006 annual report of changes or errors in the Emergency Core Cooling System (ECCS) Evaluation Models pursuant to 10 CFR 50.46(a)(3)(ii) for the Cooper Nuclear Station (CNS).

By letter dated October 23, 2006 (Reference) the Nebraska Public Power District (NPPD) reported the reanalysis of the Licensing Basis (LB) Peak Clad Temperature (PCT) for CNS, including the nature of the change and the estimated impact on PCT pursuant to 10 CFR 50.46(a)(3)(i). That letter reported the PCT as 2040'F. NPPD reports that there were no other errors or changes to the ECCS Evaluation Models used for CNS, and that the current value of PCT for CNS is 2040'F as reported in the Reference letter. As a result, CNS continues to comply with the PCT limit of 2200'F specified in 10 CFR 50.46(b)(1).

NPPD has historically submitted the CNS annual report required by 10 CFR 50.46(a)(3)(ii) in the later part of December each year. NPPD advises the Nuclear Regulatory Commission that, beginning with the calendar year 2007 reporting period, this report will be submitted in January of the year following the close of the reporting period. The reporting period for changes to or errors in the ECCS Evaluation Models will be January 1 through December 31 of each year.

COOPER NUCLEAR STATION P.O. Box 98 / Brownville, NE 68321-0098 Telephone: (402) 825-3811 / Fax: (402) 825-5211 www.nppd.com

NLS2006097 Page 2 of 2 If you have any questions regarding this issue please call George Griffith, Fuels and Reactor Engineering Manager, at (402) 825-5831.

Sincerely, PaulV. FI" Licensing Manager

/rr cc: Regional Administrator USNRC - Region IV Senior Project Manager USNRC - NRR Project Directorate IV- I Senior Resident Inspector USNRC - CNS CNS Records NPG Distribution George Griffith

ATTACHMENT 3 LIST OF REGULATORY COMMITMENTS@

ATTACHMENT 3 LIST OF REGULATORY COMMITMENTSN Correspondence Number: NLS2006097 The following table identifies those actions committed to by Nebraska Public Power District (NPPD) in this document. Any other actions discussed in the submittal represent intended or planned actions by NPPD. They are described for information only and are not regulatory commitments. Please notify the Licensing Manager at Cooper Nuclear Station of any questions regarding this document or any associated regulatory commitments.

COMMITMENT COMMITTED DATE COMMITMENT NUMBER OR OUTAGE None

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