NG-06-0633, 10 CFR 50.46 Annual Report of Changes in Peak Cladding Temperature for Duane Arnold Energy Center

10 CFR 50.46 Annual Report of Changes in Peak Cladding Temperature for Duane Arnold Energy Center

ML062770271
Person / Time
Site:	Duane Arnold
Issue date:	09/20/2006
From:	Vanmiddlesworth G Duane Arnold
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NG-06-0633
Download: ML062770271 (2)

Text

FPL Energy Duane Arnold, LLC 3277 DAEC Road Palo, Iowa 52324 FPLEnergy.

Duane Arnold Energy Center September 20, 2006 NG-06-0633 10 CFR 50.46(a)(3)(ii)

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Duane Arnold Energy Center Docket 50-331 License No. DPR-49 10 CFR 50.46 Annual Report of Changes in Peak Cladding Temperature for the Duane Arnold Enermy Center

Reference:

Letter from G. Van Middlesworth (NMC) to USNRC, "10 CFR 50.46 Annual Report of Changes in Peak Cladding Temperature for the Duane Arnold Energy Center," NG-05-0483, dated September 21, 2005.

In accordance with 10 CFR 50.46(a)(3)(ii), FPL Energy Duane Arnold, LLC (hereafter FPL Energy Duane Arnold) hereby submits the annual report regarding the changes in the calculated peak cladding temperature (PCT) of the GE14 fuel currently utilized at the Duane Arnold Energy Center (DAEC). This report covers the period from the last annual report (reference) through August 31, 2006.

Our fuel vendor notified FPL Energy Duane Arnold of a change in the current Loss-of-Coolant Accident analysis methodology subsequent to the referenced report. However, this methodology change had no impact on the calculated licensing basis PCT for the DAEC.

Enclosed is a current summary of the DAEC's analysis of record.

This letter contains no new commitments.

an Middlesworth Site Vice President, Duane Arnold Energy Center FPL Energy Duane Arnold Enclosure cc: Administrator, Region Ill, USNRC Project Manager, Duane Arnold Energy Center, USNRC Resident Inspector, Duane Arnold Energy Center, USNRC 1 DI

Enclosure to NG-06-0633 September 20, 2006 10 CFR 50.46 ANNUAL REPORT for DAEC - 2006 Peak Cladding Temperature(')

-(2).

Last Acceptable Model Results : 151 00 F Previously Reports Errors and Changes:

2001(3): + 55 0 F 2002 -2005: + 10°F New Errors and Changes: 0°F Analysis of Record Results: 1575 0 F (1) Licensing Basis PCT (LBPCT), as defined in NEDE-23785-1-P-A, "The GESTR-LOCA and SAFER Models for the Evaluation of the Loss-of-Coolant Accident:

Volume III - SAFER/GESTR Application Methodology," February 1985.

(2) General Electric Report, "Safety Analysis Report for Duane Arnold Energy Center Extended Power Uprate," NEDC-32980P, Revision 1, April 2001.

(3) 30-day Special Report submitted June 7, 2001 (NG-01-0754). This report concluded that no re-analysis was required and reset the 50°F reporting threshold under

§50.46 (a)(3)(i) back to zero.