ML041480433

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Steam Generator Outside Diamenter Stress Corrosion Cracking Pulled Tube Examination - Cycle 5 Refueling Outage
ML041480433
Person / Time
Site: Watts Bar 
Issue date: 05/20/2004
From: Pace P
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
GL-95-005, TAC MC1048
Download: ML041480433 (2)


Text

Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 MAY 2 0 2004 10 CFR 50.4 U.S. Nuclear Regulatory Commission ATTN:

Document Control Desk Washington, D. C. 20555 Gentlemen:

In the Matter of Tennessee Valley Authority

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Docket No.50-390 WATTS BAR NUCLEAR PLANT (WBN) UNIT 1 -

STEAM GENERATOR OUTSIDE DIAMENTER STRESS CORROSION CRACKING (ODSCC) PULLED TUBE EXAMINATION -

CYCLE 5 REFUELING OUTAGE (TAC NO. MC1048)

The purpose of this submittal is to provide the metallurgical examination results of the pulled steam generator tube from the WBN Unit 1 Cycle 5 Refueling Outage.

TVA implemented the voltage based alternate repair criteria for ODSCC in accordance with Generic Letter 95-05 in the Unit 1 Cycle 4 Refueling Outage.

Generic Letter 95-05 provides guidance for a program of tube removal for testing and examination.

Section 6.b.a of the Generic Letter provides guidance regarding the information to be provided to NRC when the metallurgical examination of the tube becomes available.

The Enclosure provides the results of that examination in the final report SG-SGDA-04-1 Revision 1, "Steam Generator Pulled Tube Examination," dated March 2004.

pnrted req paWe WO36

U.S. Nuclear Regulatory Commission Page 2 WAY 2 0 200't There are no regulatory commitments identified in this report.

If you have any questions about this report, please contact me at (423) 365-1824.

Sincerely, P. L. Pace Manager, Site Licensing and Industry Affairs Enclosure cc: (Enclosure):

NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Ms. Margaret H. Chernoff, Project Manager U.S. Nuclear Regulatory Commission MS 08G9 One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 Mr. M. M. Comar, Project Manager U.S. Nuclear Regulatory Commission MS 08G9 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