ML18036A473

Application for Amend to License DPR-52,revising LCO for Requiring Two Operable Containment Atmosphere Dilution Sys During Plant Operation

ML18036A473
Person / Time
Site:	Browns Ferry
Issue date:	12/06/1991
From:	Baron R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML18036A474	List: ML18036A473 ML18036A475
References
TVA-BFN-TS-305, NUDOCS 9112120121
Download: ML18036A473 (7)

Text

)ACCELERATED DEMONSATION SYSTEM DISTRIBUTION i~

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9112120121 DOC.DATE: 91/12/06 NOTARIZED: NO DOCKET g FACIL:50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 AUTH. NAME AUTHOR AFFILIATION BARON,R.R. Tennessee Valley Authority RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Application for amend to license DPR-52,revising LCO for requiring two operable containment atmosphere dilution sys during plant operation.

DISTRIBUTION CODE: A001D TITLE: OR COPIES RECEIVED:LTR Submittal: General Distribution Q ENCL f SIZE: +/ i D NOTES RECIPIENT COPIES RECIPIENT COPIES ID'ODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL SANDERS,M. 1 1 HEBDON,F 1 1 D ROSS,T. 2 2 INTERNAL: ACRS 6 6 NRR/DET/ECMB 7D 1 1 D NRR/DET/ESGB 1 1 NRR/DOEA/OTS Bl 1 1 1 NRR/DST SE2 1 1 NRR/DST/SELB 7E 1 1 NRR/DST/SICBSH7 1 1 NRR/DST/SRXB SE 1 1 NUDOCS-ABSTRACT 1 1 1 0 OGC/HDS3 1 0 REG FI E 01 1 1 RES/DSIR/EIB 1 1 EXTERNAL: NRC PDR 1 1 NSIC 1 1 D

D NOTE TO ALL "RIDS" RECIPIENTS PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM P 1-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 24 ENCL 22

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Tennessee Valley Authority, Post Office Box 2000. Decatur, Alabama 35609 TVA-BFN-TS-305 10 CFR 50.90 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of Docket No. 50-260 Tennessee Valley Authority BROWNS FERRY NUCLEAR PLANT (BFN) TVA BFN REQUEST FOR TECHNICAL SPECIFICATION (TS) NO. 305 FOR UNIT 2 LIMITING CONDITION FOR OPERATION (LCO) REQUIREMENTS 3.7.G.l.a AND 3.7.G.3 In accordance with the provisions of 10 CFR 50.4 and 50.90, we are submitting a request for an amendment to license DPR-52 to change the BFN Technical Specifications for Unit 2 (Enclosure 1). The proposed amendment will revise the LCO requirement for requiring two operable Containment Atmosphere Dilution (CAD) systems during plant operation.

On October 16, 1991, BFN staff discovered that CAD tank B was venting nitrogen at an unusually high rate and the vacuum in the insulation space surrounding the tank had degraded. Efforts to locate and repair the leak confirmed that the leak was not due to atmosphere entering the vacuum space from outside the tank; therefore, the leak is believed to be the internal liquid nitrogen storage tank leaking nitrogen gas into the space. Location and repair of such a leak requires cutting into the outer shell of the tank and possibly extensive disassembly. This repair will likely require more time than the 30 days allowed by technical specifications and a forced plant shutdown would be required without a TS change.

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U.S. Nuclear Regulatory Commission The reason and justification for the proposed changes are provided by Enclosure 2. A proposed determination of no significant hazards consideration is provided by Enclosure 3. TVA requests an expeditious review of the proposed changes.

If there are any questions concerning this TS change, please contact R. R. Baron, extension 7566.

Sincerely, R. R. Baron Manager of Site Licensing In the absence of 0. J. Zeringue Vice President, Browns Ferry Operations Subscribed and sworn to before me on t is 6th day of December 1991.

Notary Public t

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Eiici;osur e cc: See page 3

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U.S. Nuclear Regulatory Commission cc (Enclosure):

American Nuclear Insurers Attention: Librarian The Exchange, Suite 245 270 Farmington Avenue Farmington, Connecticut 06032 Mr. Johnny Black, Chairman Limestone County Commission 310 Washington Street Athens, Alabama 35611 Dr. C. E. Fox State Health Officer State Department of Public Health State Office Building Montgomery, Alabama 36194 Mr. J. E. Jones General Electric Company 735 Broad Street Suite 1108 James Building Chattanooga, Tennessee 37402 NRC Resident Inspector Brovns Ferry Nuclear Plant Route 12, Box 637 Athens, Alabama 35611 Mr. Thierry M. Ross, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. B. A. Wilson, Project Chief U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323

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