L-2012-204, CFR 50.46, Acceptance Criteria for Emergency Core Cooling Systems in Light Water Nuclear Power Reactors - 2011 Annual Report

CFR 50.46, Acceptance Criteria for Emergency Core Cooling Systems in Light Water Nuclear Power Reactors - 2011 Annual Report

ML12130A204
Person / Time
Site:	Turkey Point
Issue date:	04/30/2012
From:	Kiley M Florida Power & Light Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
L-2012-204
Download: ML12130A204 (3)

Text

IL._ Florida Power and Light Company, 9760 SW 344e St., Homestead, FL 33035 POWERING TODAY.

EMPOWERING TOMORROW.0 April 30, 2012 L-2012-204 10 CFR 50.46 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555 Re: Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 10 CFR 50.46, "Acceptance Criteria for Emergency Core Cooling Systems in Light Water Nuclear Power Reactors" - 2011 Annual Report

Reference:

1. Letter from Michael Kiley (FPL) to U.S. Nuclear Regulatory Commission (L-2011-120),

"Turkey Point Units 3 and 4, Docket Nos. 50-250 and 50-251, 10 CFR 50.46, 'Acceptance Criteria for Emergency Core Cooling Systems in Light Water Nuclear Power Reactors' -

2010 Annual Report," April 26, 2011.

2. Letter from Michael Kiley (FPL) to U.S. Nuclear Regulatory Commission (L-2010-113),

"Turkey Point Units 3 and 4, Docket Nos. 50-250 and 50-251, License Amendment Request for Extended Power Uprate (LAR 205)," Accession No. ML103560169, October 21, 2010.

10 CFR 50.46(a)(3)(ii) requires that licensees report to the Commission at least annually the nature of changes to, or errors discovered in, the Emergency Core Cooling System (ECCS) evaluation models (EM), or in the application of such models that affect the peak clad temperature calculation and their effect on the limiting ECCS analysis. The attachment to this letter provides the Florida Power and Light Company (FPL) report for Turkey Point Units 3 and 4 for 2011.

FPL letter L-2011-120 (Reference 1), submitted the 2010 10 CFR 50.46 annual report. The LBLOCA Peak Clad Temperature (PCT) reported was 1998 'F, and the SBLOCA PCT reported was 1689 'F. The cumulative changes reported by L-2011-120 for the LBLOCA and SBLOCA were 283 'F and 105 'F, respectively.

There were no changes in PCT for the SBLOCA and LBLOCA during 2011. Attachment 1 provides the PCT cumulative changes for the LBLOCA and SBLOCA for Turkey Point Units 3 and 4.

an FPL Group company

L-2012-204 Page 2 of 2 10 CFR 50.46(a)(3)(ii) also requires that a schedule for reanalysis be provided or compliance with the requirements of the regulation be shown. Compliance with 10 CFR 50.46 requirements is demonstrated by the total estimated LBLOCA PCT of 1998 'F, and the SBLOCA PCT of 1689 'F, both remaining well below the limit of 2200 'F and by the total cumulative PCT changes having been calculated conservatively. Accordingly, a schedule for reanalysis is not required. However, the ECCS EM has been revised and re-analysis of the LBLOCA and SBLOCA for Turkey Point Units 3 and 4 has been submitted to the NRC as part of License Amendment Request 205 (Reference 2).

Should there be any questions, please contact Robert Tomonto, Licensing Manager, at 305-246-7327.

Very truly yours, Michael Kiley Vice President Turkey Point Nuclear Plant Attachment cc: Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, Turkey Point Plant

L-2012-204 Attachment I Page I of 1 Table 1 Peak Cladding Cumulative Temperature Change SBLOCA 2010 10 CFR 50.46 Annual Report (Ref. 1) 1689 OF 105 OF Errors in 2011

- Radiation Heat Transfer Logic 0 OF 0 OF

- Maximum Fuel Rod Time Step Logic 0 OF 0 OF 2011 10 CFR 50.46 Annual Report 1689°F 105°F Peak Cladding Cumulative Temperature Chanize LBLOCA 2010 10 CFR 50.46 Annual Report (Ref. 1) 1998 OF 283 OF No Errors in 2011 2011 10 CFR 50.46 Annual Report 1998°OF 283 OF