ML20029B218
| ML20029B218 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 02/28/1991 |
| From: | Wallace E TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9103060224 | |
| Download: ML20029B218 (3) | |
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FEB 281991 U.S. Nuclear Regulatory Cornission ATTNt Document Control Desk Washin6 ton, D.C.
20555 Centlement In the Matter of
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Docket Nos. 50-259 Tennoscoe Valley Authority
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50-260 50-296 BROWNS FERRY NUCLEAR PLANT (DFN) - TVA SUPPLEMENTAL RESPONSE TO GENERIC LETTER 88-11, NRC p0SITION ON RADIATION EMBRITTLEMENT OF REACTOR VESSEL KATERIALS AND ITS IMPACT ON PLANT OPERATIONS
- eferences:
1.
Generic Letter 80-11, dated July 12, 1988, "NRC position on Radiation Embrittlement of Reactor Vespel Material and Its Impact on plant Operations" 2.
TVA Response to Generic Lottor 80-11, dated November 30, 1988 This correspondence providos a change to TVA's schedule for submitting revised pressuro-temperature (p-T) limits for DFN Technical Specifications using the methodology of Revisinn 2 to Ro6ulatory Guide (RG) 1.99, Radiation Embrittlement of Reactor Vescol Materials.
Reference 1, requested licensees submit a technical analysis and a proposed schedule for action.
The GL stated the schedule was negotiable provided actions would be completed within two plant outages after the effectivo date of Revision 2 to RG 1.99.
Referenco 2, provided TVA's response to GL 88-11.
The technical analysis concluded that for DFN Units 2 and 3 the current TS are boundin6 with respect to pressure / temperature limits determined using the RG 1,99, Revision 2 methodology.
For DFN Unit 1, the current TS is not bounding with respect to PT limits detennined using the Revision 2 methodology.
Units 2 and 3 will be bounded by the present TS until approximately ten effective full power years (EFpY), which is expoeted to carry the units through two additional cycles. Units 2 and 3 have more operatin6 margin than Unit 1 because the most limiting wold in those reactor vessels has less copper and nickel content and a lower initial nil-ductility transition temperature.
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FEB 28 i991 2
'U.S. Nuclear Regulatory Commission All three DFN units are currently shu.tdown. Units 1 and 3 are on administrative hold with restart dntet, to be determined.
TVA's response to GL 88-11 committed to submit revisions to the BFN TS by March 1, 1991. At the time of the responso to the CL, TVA anticipated restart of Unit 2 in 1989.
The CL 88-11 schedule was based on submittal of the TS revision after Unit 2 restart. The current schedule for Unit 2 anticipates restart in April of 1991.
Accordingly, the schedulo for submittel of these TS revisions is being chant,cd.
TVA will submit these TS revisions by April 30, 1991.
This correspondence changes the schedulo for an existing connitment. No new connitments are containod in this correspondence.
If you have any questions, please telephone Patrick P. Carter at (205) 729-3566.
Very truly yours, TENW6'SSEE VALLEY AUTHORITY 1'Adflav E,d-uo E.G.ha
, Mann r g
Nuclear' Licensing aJd Regulatory Affairs cc Seo page 3
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FEB P.81991 l
U.S. Nuclear Regulatory Commis91on cc American Nuclear Insurers Attention Librarian The Exchange, Suite 245 270 Farmington Avenue Farmington, Connecticut 06032 Ms. S. C. Black, Deputy Director Project Directorate 11-4 U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. Gary Daly, Chairman Limestone County Commission 310 Washin6 ton Street Athens, Alabama 35611 Dr. C. E. Fox State llealth Officer State Department of Public floalth State Office Building Montgomery, Alabama 36194 Mr. J. E. Jones General Electric Company 735 Broad Street Suite 1100 James Building Chattanooga, Tennessee 37402 NRC Resident Inspector Browns Ferry Nuclear Plant Route 12 Box 637 Athens, Alabama 35609-2000 Mr. Thierry M. Ross, Projer.t Manager U.S. Nuclear Re6ulatory Connission one White Flint,. North 11555 Rockville Piko Rockville, Maryland 20052 Mr.. B. A. Wilson, Project Chief U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, coorgia 30323
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