ML20070D367
| ML20070D367 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 02/27/1991 |
| From: | Wallace E TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| REF-GTECI-A-17, REF-GTECI-A-47, REF-GTECI-SC, REF-GTECI-SY, TASK-A-17, TASK-A-47, TASK-OR NUDOCS 9102280229 | |
| Download: ML20070D367 (4) | |
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nn lemessee Wiey Autt'onty.1101 Mrket Street Chanaraoga lennessee 374^4 FEB 27 B91 U.S. Nuclear Regulatory Comission ATTN Document Control Desk Washington, D.C.
20555 Gentlement In the Matter of
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Docket Nos. 50-259 Tennessee Valley Authority
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50-296 BROWNS FERRY NUCLEAR PLANT (BFN) - ACTION PLAN TO DISPOSITION CONCERNS RELATED TO UNITS 1 AND 3 SEISHIC CLASS II pIPINC OVER CLASS I COMMODITIES
.Referencei-TVA-letter, dated January 9,1991, plans for the Return to Service of BFN Units 1 and 3 As part of the referenced letter, TVA committed to provide the NRC staff with'the action plan for dispositioning concerns related to Seismic Class II piping-over Class.1 commodities at BFN Units 1 and 3.
TVA-comitted to provide a sumary of the. concerns, a review of the Unit 2 resolution, a discussion of lessons learned, and a description how these concerns will be resolved on Units 1 and 3.
Systems interaction in nuclear power plants is currently being addressed
.by NRC-as Unresolved Safety Issues (USIs) A-17, Seismic Interactions in Nuclear power plants, and A-46. Seismic Qualification of Equipment 11 Operating plants. NRC and tho' industry are developing resolution fo *
-these issues. TVA developed a program to evaluate the specific.Issut of seismically induced water spray from-Seismic Class II piping impinging on
--Unit 2 and' common = Seismic Class I commoditiestprior to restart of
-Unit 2.
This program was submitted by TVA letter, dated March 29,-1988.-
NRC concluded-in Section 2i2.4.2 of NUREC-1232, Supplement 1, dated
-October 24, 1989,- that TVA's program was acceptable-to allow restart of Unit 2.
TVA notified NRC of the completion of this program by letter, dated January 3, 1991.
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U.S. Nuclear Regulatory Commission TVA has determined that the specific issue of seismically induced water spray from Seismic Class II piping impinging on Units 1 and S Seismic Class I commodities will be implemented, in accccdonce with the Unit 2 criteria and implementation precedent, prior to the rentact of Units 1 and 3.
Long-term operation of Units 1, 2. Lnd 3 will require compliance with the final resolution of criteria and scho6ules association with the generic resolution of USIs A-17 and A-46.
F This submittal is provided for inform tional purpocos only.
No NRC action is specifically requested. A summary list of commitments contained in this letter is provided in the Enclosure.
If you have any questions, please contact Joseph E. McCarthy, Manager of Unit 3 Licensing, at (205) 729-3604.
Very truly yours.
IENNESSEE VALLEY AUTHORITY 4
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V' gg E. G. Wa lac Man er Nucleat Licensing -id Regulatory Affairs Enclosure cc:
See page 3
ENCLOSURE 1 BROWNS FERRY NUCLEAR PLANT - UNITS 1 AND 3
SUMMARY
OF COMMITMENTS The speelfic issue of seicmically induced water spray from seismic class II piping impinging on Units 1 and 3 seismic Class I commodities will be implemented, in accordance with the Unit 2 criterin and implement.ation procodont, prior to the restart of Units 1 and 3.
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