ML19325E988

Responds to NRC Bulletin 88-010, Nonconforming Molded-Case Circuit Breakers. Results of Review Will Be Provided by 891215

ML19325E988
Person / Time
Site:	Browns Ferry
Issue date:	11/07/1989
From:	Michael Ray TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-88-010, IEB-88-10, NUDOCS 8911130146
Download: ML19325E988 (2)

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• a I TENNESSEE VALLEY AUTHORITY  !

!' CHATTANOOGA, TENNESSEE 37401 h i

SN 157B Lookout Place l

i NOV 07 seg i,

U.S. Nuclear Regulatory Commission ATIN: Document Control Desk Washington, D.C. 20555 4

Gentlemen:

In the Matter of .

) Docket Nos. 50-259 Tennessee Valley Authority ) 50-260 50-296 BROWNS FERRY NUCLEAR PLANT (BFN)'- RESPONSE TO NRC BULLETIN NO. 88-10, SUPPLEMENT 1: NONCONFORMING MOLDED-CASE CIRCUIT BREAKERS (MCCB) i

Reference:

M. J. Ray's letter to NRC dated June 23,1989, "TVA's Response to Bulletin 88-10: Nonconforming Molded-Case Circuit Breakers" ,

The subject supplement to the bulletin requested TVA to review written reports I submitted to NRC (reference) in accordance with Bulletin No. 88-10 and verify that they meet the bulletin provisions as clartfled by Supplement 1. Initial review of Bulletin 88-10 was in accordance with the seven NRC positions specified in Supplement 1. ,

Before receiving Bulletin 88-10, Supplement 1,.TVA identified and informed NRC that the list of MCCBs provided in Enclosure 2 of BFN's response (reference) to Bulletin 88-10 was potentially incomplete. TVA had overlooked identifying and verifying traceability of MCCBs used in the following applications:

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1 - Breakers on Class IE boards which feed non-safety loads Breakers used as penetration protection devices l TVA has recently determined that the review effort in these areas will take longer to complete than originally anticipated. Therefore, TVA will provide

-the results of our review, including verification that the response meets the H provisions of Bulletin 88-10 as clarified by Supplement 1, by December 15, 1989. Records will be maintained for a period of five years.

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i. I 8911130146 891107 An Equal Opportunity Employer l-

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U.S. Nuclear Regulatory Commission NOV 07 ses

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Please refer any questions concerning this response to Patrick P. Carter, BFN ,

Site Licensing, (205) 3570. 1 Very truly yours, TENNESSEE VALLEY AUTHORITY b \ 9[ s Manage , Nuclear Licensing and Regulatory Affairs cc: Ms. S. C. Black, Assistant Director for Projects l TVA Projects Division U.S. Nuclear Regulatory Commtssion '

One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. B. A. Wilson, Assistant Director ,

for Inspection Programs TVA Projects Division -

U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637 Athens, Alabama 35609-2000 h

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