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Text
Maria Korsnick R.E. Ginna Nuclear Power Plant, LLC Site Vice President 1503 Lake Road Ontario, New York 14519-9364 585.771.5200 585.771.3943 Fax maria. korsnick@constellation.com Generation Constellation Group Energy April 30, 2007 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION: Document Control Desk
SUBJECT:
R.E. Ginna Nuclear Power Plant Docket No. 50-244 10CFR50.46 Annual ECCS Report
References:
(a) Westinghouse Letter LTR-LIS-06-525,
Subject:
Transmittal of Updated R. E.
Ginna PCT Summaries, dated August 31, 2006.
In accordance with the requirements in IOCFR50.46 paragraph (a)(3)(ii), this annual Emergency Core Cooling System (ECCS) report is hereby submitted by R.E. Ginna Nuclear Power Plant, LLC (Ginna LLC).
Westinghouse, the provider of loss of coolant accident (LOCA) analysis services for the R.E. Ginna Nuclear Power Plant, provided an update to the peak cladding temperature (PCT) margin in Reference (a). This update was the result of a new LOCA Analysis of Record associated with the R.E. Ginna Extended Power Uprate which commenced with Cycle 33. There have been no changes to the PCT margin since the Westinghouse update. A summary of the cumulative PCT changes can be found in Attachment 1 to this letter.
If you should have any questions regarding this submittal, please contact Robert Randall at (585) 771-5219.
Very truly yours, Mary G Kors ick
Attachment:
LOCA PCT Summary, 2007 Update cc: S. J. Collins, NRC D. V. Pickett, NRC Resident Inspector, NRC AcCA looms
ATTACHMENT (1)
LOCA PCT
SUMMARY
2007 UPDATE
ATTACHMENT I LOCA PCT
SUMMARY
Best Estimate Large Break LOCA R.E. Ginna Nuclear Power Plant Evaluation Model: ASTRUM (2004) Fuel: 422 Vantage +
FQ = 2.6 FA H = 1.72 SGTP = 10%
A. Analysis of Record (3/05) (effective 10/06) PCT = 1870'F B. Prior ECCS Model Assessments
- 1. None APCT = 0°F C. Planned Plant Modification Evaluations
- 1. None APCT = 0°F D. 2006 ECCS Model Assessments
- 1. None APCT = 00 F E. Other Margin Allocations
- 1. None APCT = 00 F Licensing Basis PCT = 1870'F ATTACHMENT I LOCA PCT
SUMMARY
Appendix K Small Break LOCA R.E. Ginna Nuclear Power Plant Evaluation Model: NOTRUMP Fuel: 422 Vantage +
FQ = 2.6 F H =1.7 2 SGTP = 10%
A. Analysis of Record (4/05) (effective 10/06) PCT = 1 167°F B. Prior ECCS Model Assessments
- 1. None APCT = 0°F C. Planned Plant Modification Evaluations
- 1. None APCT = 0°F D. 2006 ECCS Model Assessments
- 1. None APCT = 0°F E. Other Margin Allocations
- 1. None APCT = 0°F Licensing Basis PCT = 1167°F
