ML20073F931
| ML20073F931 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 04/30/1991 |
| From: | Wallace E TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-88-11, NUDOCS 9105030068 | |
| Download: ML20073F931 (3) | |
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/(PR 301991 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Centlemen:
In the Matter of ) Docket Nos. 50-259 Tennessee Valley Authority ) 50-260 50-296 BROWNS FERRY NUCLEAR PLANT (BFN) - TVA SUPPLEMENTAL RESPONSE TO CENERIC LETTER (GL) 88-11, NRC POSITION ON RADIATION EMBRITTLEMENT OF REACTOR VESSEL KATERIALS AND ITS IMPACT ON PLANT OPERATIONS
References:
- 1. Generic Letter 88-11, dated July 12, 1988, "NRC Position on Radiation Embrittlement of Reactor Vessel Material and Its Impact on plant Operations"
- 2. TVA Response to Gencele Letter 88-11, dated November 30, 1988
- 3. TVA Supplemental Response to Generic Letter 88-11, dated February 28, 1991 This-correspondence provides a change to TVA's schedule for submitting revised pressure-temperature (P-T) limits for BFN Technical Specifications (TS) using the methodology of Revision 2 to Regulatory Guide (RG) 1.99, Radiatlon Embrittlement of Reactor Vessel Materials.
Reference 1, requested licensees submit a technical analysis and a proposed schedule for action. The CL stated tho schedule was negotiable provided actions would be completed within two plant outages af ter the effectivo date of Revision 2 to RG 1.99.
Reference 2, provided TVA's response to GL 88-11. The technical analysis concluded that for BFN Units 2 and 3 the current TS are bounding with respect to pressure / temperature limits determined using the RG 1.99, Revision 2 methodology. For BFN Unit 1, the current TS is not bounding with respect to PT limito determined 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 expected to carry the unlts
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,,' -: 23 U.,8. Nuclear Regulatory Commission APR 301991 w through_two additional cycles._ Units 2 and-3 have'more operating margin than-Unit ='. because.the most limiting wold in those' reactor vessels has less copper and nickel-content, and a lower initial nil-ductility-transition temperature.
All'three.BFN units are currently shutdown. Units 1 and 3 are on administrative hold with restart dates to be determined. TVA's response to GL 88-11 committed to submit revisions to the BFN TS by March 1, 1991.
At the~ timo of the response to the OL, TVA anticipated restart of Unit 2 in 1989. -The GL 88-11 schedule was based on submittal of the TS revision after Unit 2 restart.1 TVA anticipates Unit 2 will restart in May 1991.
Accordingly, the schedulo for submittal of these TS revisions is being )
changed. TVA will submit these TS revisions by October 4, 1991.
-)
l This correspondence changes the schedule.for an exlsting commitment. No
~
new' commitments.are-contained in this correspondenco. l l
If you have any questions,.please telephone Patrick P. Carter at (205)-729-3566.
,Vory trulyjyours, TENNESSEE VALLEY AUTHORITY ttA,,, ,
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E. G. : adlace , 'Kanage 4 Nuclear Licensing and
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. *- U.S. Nuclear. Regulatory' Commission. APR 3 0. B91
!cci American Nuclear Insurers Attention . Librarian The Exchange,~ Suite.245 270. Farmington Avenue Farmington, Connecticut <06032 Ms. S. C... Black, Deputy Director ,
Project Directorate II-A U.-S.' Nuclear Regulatory Commission One White Flint, North 11555.Rockville Pike
- Rockville, Maryland :20852
'Mr. Gary Daly, Chairman Limestone County Commission
- .310 Washington Street i LAthens.' Alabama 35611 h
Dr. C. E.' Fox _.
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State Health Officer
. State' Department of Public Health State 0ffice Building-Montgomery,-Alabama 36194
, 1Mr. J. E. Jones ~
- General Electric Company 735 Broad Street; .
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. Suite 1108l James. Building
~_ Chattanooga; TennesseeL 37402
'WRC Resident Inspector-Browns; Ferry Nuclear Plant' RouteL12,-Box 637-
- -Athens Alabamai- 35609-2000 -_.
e Mc'_Thierry
. M. Ross, Project Manager U.S. Nuclear Regulatory Commlnsion One' White Flint, North
.1155b>Rockvillo Pike.
Rochville,' Maryland 120852
' Mr. B. A.'. Wilson,l ProjectfChlef'-
.. .U.S. Nuclear l Regulatory.Comminsion b Region:II, L101 Marietta;Streetf1NWLSuite 2900 '
AtlantayCeorgia :30323:
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