ML18033A850

Advises That Final SER for USI A-46 Implementation Will Be Delayed at Least Until End of CY89.Plant Walkdown Associated W/Resolution of USI A-46 Must Be Deferred at Least One Refueling Outage.Encourages Consolidation of Seismic Issues

ML18033A850
Person / Time
Site:	Browns Ferry
Issue date:	07/31/1989
From:	Michael Ray TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR NUDOCS 8908040020
Download: ML18033A850 (6)

Text

Ac CKLZRATED DI BUTION DEMONSTRATION SYSTEM REGULATORY INFORMATION 'DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:8908040020 DOC.DATE: 89/07/31 NOTARIZED: NO DOCKET FACIL:50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 AUTH. NAME AUTHOR AFFILIATION RAY,M.J. Tennessee Valley Authority RECIP.NAME RECIPXENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Advises that final SER for- USI A-46 implementation will be delayed at least until end of CY89.

DISTRXBUTION CODE: D030D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: TVA Facilities Routine Correspondence NOTES:1 Copy each to: S.Black,D.M.Crutchfield,B.D.Liaw, 05000260 R.Pierson,B.Wilson RECXPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL SIMMS,M PD GEARS,G INTERNAL: ACRS NUDOCS-ABSTRACT OC/LF OGC/HDS2

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TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 37401 SN 157B Lookout Place

~III 3 I $ 89 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Hashington, D.C. 20555 Gentlemen:

In the Hatter of Docket No. 50-260 Tennessee Valley Authority BRONNS FERRY NUCLEAR PLANT (BFN) UNIT 2 REVISED HALKDONN SCHEDULE FOR RESOLUTION OF UNRESOLVED SAFETY ISSUE (USI) A-46

Reference:

R. L. Gridley's letter to NRC dated October 5, 1989 Response to Generic Safety Evaluation Report on Seismic Qualification Utility Group (SQUG) Resolution of Unresolved Safety Issue A-46.

On October 5, 1988, TVA provided NRC a schedule for the plant walkdown associated with the implementation of USI A-46 at BFN. This schedule was contingent upon the completion of generic efforts submitted by the Seismic Qualification Utility Group (SQUG) in its October 9, 1987 letter. The SQUG schedule provided for completion of the Generic Implementation Procedure (GIP) by the end of calendar 1988, followed by NRC review and issuance of a final Safety Evaluation Report (SER) in the first quarter of 1989.

It is now projected that the final SER for USI A-46 implementation will be delayed at least until the end of calendar 1989. Based on this SER schedule slippage, for BFN, the anticipated plant walkdown associated with the resolution of USI A-46 must be deferred at least one refueling outage for would place the walkdown before cycle 8 operation for unit 2.

unit 2. Thisissues It is TVA's policy that resources must be allocated for refueling outage projects at least eight months prior to the start of the outage. The new schedule for BFN is, therefore, consistent with the TVA policy.

As was stated in our previous letter, this schedule is also contingent upon TVA's review of the final GIP after approval by NRC and resolution of all outstanding . Based on this review, TVA wi 1 1 either commit to pursue a generic resolution of USI A-46 or file a plant-specific response. Should the generic resolution be pursued, TVA may elect, at its option, not to perform certain aspects of the generic program based upon suitable justification. TVA also reserves the right to pursue all available appeal options.

oSo 8908040020 890731 r 0 PDR ADOCK 05000260 P PDC An Equal Opportunity Employer

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U.S. Nuclear Regulatory Commission JUL Si.i>w TVA also encourages NRC to consolidate all seismic issues, including seismic margins and the severe accident program, so that a single, cost-effective walkdown can be performed at each plant. This integration is essential to effectively utilize valuable industry and NRC resources.

Very truly yours, TENNESSEE VALLEY AUTHORITY Marfage Nuc ear Licensing and Regulatory Affairs cc: Ms. S. C. Black, Assistant Director for Projects TVA Projects Division U.S. Nuclear Regulatory Commission One Hhite Flint, North 11555'ockville Pike Rockville, Maryland 20852 Mr. B. A. Hilson, Assistant Director for Inspection Programs TVA Projects Division U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NH, Suite 2900 Atlanta, Georgia 30323 NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637 Athens, Alabama 35609-2000

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