ML18036B343
| ML18036B343 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 06/25/1993 |
| From: | Hebdon F Office of Nuclear Reactor Regulation |
| To: | Medford M Tennessee Valley Authority |
| Shared Package | |
| ML18036B344 | List: |
| References | |
| GL-88-001, TAC-M86252 NUDOCS 9307070265 | |
| Download: ML18036B343 (4) | |
Text
June 25, 1993 Docket No. 50-260 Dr. Mark 0. Hedford,, Vice President Technical Support Tennessee Valley Authority 3B Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801
Dear Dr. Hedford:
SUBJECT:
CORE SPRAY SYSTEM WELD OVERLAY REPAIR BROWNS FERRY NUCLEAR PLANT, UNIT 2 (TAC NO. H86252)
By letter dated April 22, 1993, the Tennessee Valley Authority (TVA) requested NRC approval of the weld overlay repair it performed for flaw indications in the Core Spray (CS) system piping weld identified as TCS-2-421.
TVA discovered these indications while performing augmented examinations, as part of the Browns Ferry Inservice Inspection Program'ISI),
during the Unit 2 Cycle 6.Refueling Outage.
The General Electric Company was contracted by TVA to design and apply the subject weld overlay pursuant to ASHE Section XI code requirements.
Furthermore, it was TVA's intention to accomplish this repair in accordance with the guidelines of.Generic Letter 88-01, "NRC Position On Intergranular Stress Corrosion Cracking (IGSCC) In BWR Austenitic Stainless Steel Piping."
The NRC staff.has completed its review of the full structural weld overlay applied to weld TCS-2-421 as documented by. the enclosed safety evaluation (SE).
Based on the results of this SE, the staff concluded that TVA's weld repair conforms with the guidelines of GL 88-01 and is therefore acceptable.
Sincerely, Original signed by Frederick J.
Hebdon, Director Project Directorate II-4 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation
Enclosure:
Safety Evaluation cc w/enclosure:
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Tennessee Val-ley Authority ATTN:
Dr. Mark 0. Medford Browns Ferry Nuclear Plant CC:
Mr.
W.
H. Kennoy, Director Tennessee Valley Authority ET 12A 400 West Summit Hill Drive Knoxville, Tennessee 37902 Mr. R. 'M. Eytchison, Vice President Nuclear Operations Tennessee Valley Authority 3B Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801 Site Licensing Manager Browns Ferry"Nuclear Plant Tennessee, Valley Authority P.O.
Box 2000 Decatur.,
Alabama 35609-2000 Mr. 0. J. Zeringue, Vice President Browns Ferry Nuclear Plant Tennessee Valley Authority P.O..Box 2000
- Decatur, Alabama 35609-2000 Mr. B.
S. Schofield, Manager Nuclear Licensing and Regulatory Affairs Tennessee Valley Authority 5B Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801 TVA Representative Tennessee Valley Authority 11921 Rockville,Pike Suite 402 Rockville, Maryland 20852 General Counsel Tennessee Val-ley Authority ET 11H 400 West, Summit Hi-ll Drive Knoxville, Tennessee 37902
- Chairman, Limestone County. Commission P.O.
Box 188
- Athens, Alabama 35611 State Health Officer Alabama Dept. of Public Health 434 Monroe Street Montgomery, Alabama 36130-1701 Regional Administrator U.S.N.R.C.
Region II 101 Marietta Street, N.W.
Suite 2900 Atlanta, Georgia 30323 Mr. Charles Patterson, Senior Resident Inspector Browns Ferry Nuclear.Plant U;S.N.R.C.
.Route 12, Box 637
- Athens, Alabama 3561.1
- Manager, Nuclear Assurance and Licensing Browns Ferry Nuclear Plant Tennessee Valley Authority P. 0.
Box 2000
- Decatur, Alabama 35609-.2000