ML18033B025

Responds to Violations Noted in Insp Repts 50-259/89-28, 50-260/89-28 & 50-296/89-28.Corrective Actions:Util Will Add Addl Layers of Gypsum Wall Board on Corridor Side of Wall Panels Prior to Restart of Unit 2

ML18033B025
Person / Time
Site:	Browns Ferry
Issue date:	10/31/1989
From:	Michael Ray TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 8911090007
Download: ML18033B025 (6)

Text

ACCELERATED DISTRIBUTION DEMONSTFMTION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

CESSION NBR:8911090007 ,DOC.DATE: 89/10/31

~ NOTARIZED: NO DOCKET ACIL:50-259 Browns Ferry Nuclear Power Station, .Unit 1, Tennessee

~

05000259 50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 50-296 Browns Ferry Nuclear Power Station, Unit 3, Tennessee 05000296 AUTH. NAME 'UTHOR AFFILIATION RAY,M.J. Tennessee Valley -Authority RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Responds to violations noted in Insp Repts 50-259,260 296/89-28 re commitment to replace fire wall..

DISTRIBUTION CODE: IEOID TITLE: General (50 COPIES RECEIVED:LTR ( ENCL L Dkt)-Insp Rept/Notice of Violation Response SIZE:

NOTES:1 Copy each to: B.Wilson,D.M.Crutchfield,B.D.Liaw,S.Black 05000259 R.Pierson, 1 Copy each to: S.Black,D.M.Crutchfield,B.D.Liaw, 05000260

.R.Pierson,B.Wilson 1 Copy each to: S. Black,D.M.Crutchfield,B.D.Liaw, 05000296 R.Pierson,B.Wilson RECIPIENT COPIES RECIPIENT COPIES ID . CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD 1 1 GEARS,G 1 1 RNAL: ACRS 2. 2 AEOD 1 1 AEOD/DEIIB 1 1 AEOD/TPAD 1 1 DEDRO 1 1 NRR SHANKMAN,S 1 1 NRR/DEST DIR 1 1 NRR/DLPQ/PEB 1 1 NRR/DOEA DIR 11 1 1 NRR/DREP/EPB 10-1 1 NRR/DREP/RPB 10 2 2 NRR/DRIS/DIR 1 -1 NRR/PMAS/ILRB12 1 1 NUDOCS-ABSTRACT 1 1 B N,J 1 1 OGC/HDS2 1 1 02 1 1 RES MORISSEAUiD 1 1 RGN2 FILE 01 1 1 EXTERNAL: LPDR 1 1 NRC PDR 1. 1 NSIC 1 1 NOTES: 5 5 NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US 10 REDUCE iVASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM P 1-37 (EXT. 3%79'O ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

'OTAL NUMBER OF COPIES REQUIRED: LTTR 31 ENCL 31

l TENNESSEE VALLEY AUTHORITY CHATTANOOGA, TENNESSEE 37aot e 5N 1578 Lookout Place 00T 31 569 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Hashington, D.C. 20555 Gentlemen:

In the Matter of Docket No. 50-260 Tennessee Valley Authority )

BROHNS FERRY NUCLEAR PLANT (BFN) COMMITMENT TO REPLACE FIRE HALL This letter will satisfy unresolved item 50-259/89-28-01, 50-260/89-28-01, and 50-296/89-28-01 as identified in NRC Inspection Report 50-259/89-28, 50-260/89-28, 50-296/89-28. NRC Inspection Report 89-28 stated:

.the walls separating the battery, battery board and DC equipment rooms for each Unit (Fire Areas 17, 18 and 19) from the control building (Fire Area 16) do not appear to meet the required fire rating. These walls are 20 gauge sheet metal panels with a resin-impregnated kraft paper honeycomb core that has been covered. with 5/8" fire code type gypsum board on each side of the panels. The combustible core'of these panels reduces the fire resistance rating of the panels to an unacceptable level. TVA has agreed to install additional layers of gypsum wall board on the corridor side of the wall panels. This modification would increase the fire resistance rating of these walls. The NRC inspection team determined that this modification would be acceptable. Because of the lo<< fuel loading, existing detection and existing suppression in the affected areas, the inspection team also determined that the actual physical modification would not have to be completed until the end of the next refueling outage for Unit 2. TVA will, however, be required to commit to modification of the existing walls, and to propose additional compensatory measu'res to be maintained until the modification is completed. The formal commitment to modify the wall and proposal of compensatory measures will be required before unit 2 restart. This item is identified as Unresolved Item 50-259/89-28-01, 50-260/89-28-01 and 50-296/89-28-01."

This situation was identified to NRC in telephone calls to NRC prior to the inspection. TVA has evaluated this situation and has determined it will be advantageous to implement the modification before restart rather than use compensatory measures.

TVA will add additional layers of gypsum wall board on the corridor side of the wall panels prior to restart of Unit 2. This modification will achieve a one hour fire rating for the wall which will provide adequate compartmentation in accordance with the BFN Fire Hazards Analysis. The completion of this mcdification will satisfy the unresolved item contained in NRC Inspection Repo~ t 89-28.

Tne comi itment contained in this letter is listed in the enclosure.

R~~g ~A~~ar.'>'>7 ~~:~ilr>"~J I="i!h ADOb,-':0.:)02. g U PIC An Equal Opportunity Employer

U.S. Nuclear Regulatory Commission o~T Bi SSS If you have any questions, please telephone Patrick P. Carier at (205) 729-3570. P Very truly yours, TENNESSEE VALLEY AUTHORITY I

y Manag,r, Nucl ar. Li cens ing and Regu1 a tory Affairs cc (Enclosure):,

Ms. S: C. Black, Assistant Director for Projects TVA Projects Division U.S. Nuclear Regulatory Commission One White Flint, Nor.th 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

ENCLOSURE Browns Ferry Nuclear Plant Appendix R Fire Nail Commitment Contained in Letter TVA will add additional layers of gypsum wall board on the corridor 'side of the wall panels prior to restart of Unit 2.