PLA-6525, 10 CFR 50.46 - Annual Report PLA-6525

10 CFR 50.46 - Annual Report PLA-6525

ML091890778
Person / Time
Site:	Susquehanna
Issue date:	07/30/2009
From:	Spence W Susquehanna
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
PLA-6525
Download: ML091890778 (2)

Text

William H. Spence PPL Susquehanna, LLC  :

President and Chief Nuclear Officer 769 Salem Boulevard *  : i. S -

4 Berwick, PA 18603  %. a, -

JUN 3 0 2809 Tel. 610.774.3683 Fax 610.774.5019 Whspence@pplweb.com p I U. S. Nuclear Regulatory Commission Document Control Desk Mail Stop OP1-17 Washington, DC 20555-0001 SUSQUEHANNA STEAM ELECTRIC STATION 10 CFR 50.46 - ANNUAL REPORT Docket Nos. 50-387 PLA-6525 and 50-388

References:

1) NRC Letterfrom R. Guzman (NRC) to B. T. McKinney (PPL),

"Susquehanna Steam Electric Station Units I and 2 -

Issuance ofAmendment Regardingthe 13-Percent Extended Power Uprate (TAC Nos. MD3309 and MD3310), "dated January30, 2008.

2) PPL Letter PLA-6385, from B. T. McKinney (PPL) to Document ControlDesk (NRC), "10 CFR 50.46 - Annual Report,"

datedJuly 7, 2008.

This report is being sent in accordance with 10 CFR 50.46(a)(3)(ii).

10 CFR 50.46(a)(3)(ii) requires (in part) annual reporting of changes to or errors in evaluation models used for calculating Emergency Core Cooling System (ECCS) performance, and an estimate of their effect on the limiting ECCS analysis.

Additionally, a proposed schedule is required for re-analysis or identification of other actions necessary to show compliance with 10 CFR 50.46 requirements.

The ECCS performance evaluation method applicable to both Susquehanna SES Unit 1 and Unit 2 is the AREVA EXEM BWR - 2000 LOCA Methodology.

Susquehanna SES Unit 2 operated at a licensed thermal power of 3489 MWth (pre-EPU) until April 7, 2009. From the submittal of the last annual 10 CFR 50.46 report (Reference 2) until April 7, 2009, there have been no non-zero Peak Cladding Temperature (PCT) changes reported to PPL Susquehanna, LLC for Unit 2.

Susquehanna SES Units 1 and 2 are currently operating at Extended Power Uprate Conditions (EPU) (Reference 1) with a licensed thermal power of 3952 MWth. Since the NRC approval of EPU (Reference 1), and also since the Reference 2 annual report, until May 27, 2009, there have been no non-zero PCT changes reported to PPL Susquehanna, LLC for Units 1 and 2. Thus, the current licensing basis PCT remains valid and no further actions are required. This letter meets the annual reporting requirements.

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Document Control Desk PLA-6525 PPL Susquehanna, LLC will continue to track future changes to the evaluation models used in the applicable LOCA analysis methods to ensure that the PCT values remain below the 10 CFR 50.46 limit, and to ensure that the 10 CFR 50.46 reporting requirements are met.

If you have any questions, please contact Mr. Christopher K. Hoffman, Acting Manager -

Nuclear Regulatory Affairs at (610) 774-4043.

Sincerely, W. H. Sp~ence copy: NRC Region I R. Janati, DEP/BRP F. W. Jaxheimer, NRC Sr. Resident Inspector B. K. Vaidya, NRC Sr. Project Manager