ML051820267

Steam Generator Voltage Based Alternate Repair Criteria for Axial Outside Diameter Stress Corrosion Cracking - Cycle 6 Ninety Day Report

ML051820267
Person / Time
Site:	Watts Bar
Issue date:	06/28/2005
From:	Pace P Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML051820267 (3)

Text

Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 JUN 2 8 2005 10 CFR 50.4 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Gentlemen:

In the Matter of ) Docket No.50-390 Tennessee Valley Authority WATTS BAR NUCLEAR PLANT (WBN) UNIT 1 - STEAM GENERATOR VOLTAGE BASED ALTERNATE REPAIR CRITERIA FOR AXIAL OUTSIDE DIAMETER STRESS CORROSION CRACKING (ODSCC) - CYCLE 6 NINETY DAY REPORT The purpose of this letter is to provide NRC the Axial ODSCC Cycle 6 report, SG-SGDA-05-24, Revision 1, entitled "Condition Monitoring and Operational Assessment: GL 95-05 Alternate Repair Criterion End of Cycle 6," dated June 2005. In accordance with the recommendations in Generic Letter 95-05, "Voltage-Based Repair Criteria for Westinghouse Steam Generator Tubes Affected by Outside Diameter Stress Corrosion Cracking," Attachment 1, Section 6.b, and TVA's commitment in an April 10, 2000, letter to NRC, the Enclosure provides the 90-day report for the Cycle 6 outage.

There are no regulatory commitments associated with this submittal. If you have any questions concerning this report, please contact me at (423) 365-1824.

Sincerely, P. L. Pace Manager, Site Licensing and Industry Affairs Enclosure Cc: See Page 2 0 Pw ed on ecWWd Dam

U.S. Nuclear Regulatory Commission Page 2 JUN 2 8 2005 Enclosure Cc: (Enclosure)

NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Mr. D. V. Pickett, Project Manager U.S. Nuclear Regulatory Commission MS 08G9a One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303

ENCLOSURE WATTS BAR NUCLEAR PLANT UNIT 1 CONDITION MONITORING AND OPERATIONAL ASSESSMENT:

GL 95-05 ALTERNATE REPAIR CRITERION END OF CYCLE 6 90-DAY REPORT REVISION 1