ML18039A595

Forwards LER 98-003-00 Re Automatic Reactor Scram on Unit 2 from 100% Power.Event Was Result of Valve Failure Which Caused Generator Stator Cooling Water to Exceed High Temp Setpoint for Tt Which Resulted in Automatic Reactor Scram

ML18039A595
Person / Time
Site:	Browns Ferry
Issue date:	10/28/1998
From:	Singer K TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML18039A596	List: ML18039A595 ML18039A597
References
NUDOCS 9811090163
Download: ML18039A595 (6)

Text

~ CATEGORY 1 ~

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RXDS)

ACCESSION NBR :9811090163 DOC.DATE: 98/10/28 .NOTARIZED: NO DOCKET FACIL 50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 AUTH. NAME AUTHOR AFFILIATION SINGER, K. W. Tennessee Valley Authority RECZP.NAME RECIPIENT AFFILIATION Records Management Branch (Document Control Desk)

SUBJECT:

Forwards LER 98-003-00 re automatic reactor scram on Unit 2 from 100% power. Event result of valve failure which caused generator stator cooling water to exceed high temp setpoi poin t for. turb3.ne trip which resulted in automatic reactor scram.

DXSTRZBUTZON CODE: IE22T COPXES RECEIVED:LTR, I ENCL 1 SIZE:

TITL'E: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc. E NOTES:

RECIPIENT COPIES RECZPZENT COPIES ID CODE/NAME LTTR ENCL ZD CODE/NAME LTTR ENCL PD2-3-PD 1 1 DEAGAZIO,A 1 1 INTERNAL:- ACRS 1 1 AEOD S 2 2 AEOD/SPD/RRAB 1 .1 ATE 1 1 NRR/DE/ECGB 1 1 1 1 NRR/DE/EMEB 1 1 NRR/DRCH/HZCB 1 1 NRR/DRCH/HOHB 1 1 NRR/DRCH/HQMB 1 . 1 NRR/DRPM/PECB RES/DET/EIB 1

1 1

.1 NRR/DSSA/SPLB RGN2 FILE 01 1,1 1 1 LZTCO BRYCE,J H 1 1 D EXTERNAL: L ST LOBBY WARD 1 1 NOAC POORE,W- 1 1 NOAC QUEENER,DS 1 1 NRC PDR 1 1 NUDOCS FULL TXT 1 1 NOTE TO ALL "RIDS'i RECIPIENTS PLEASE HELP'US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED: LTTR 23 ENCL 23

Tennessee Valley Authority, Post Office Box 2000. Decatur. Alabama 35609-2000 Karl W. Singer Vce President, Browns Feny Nucfear Rant October 28, 1998 10 CFR 50.73 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) UNIT 2 DOCKET NO. 50-260 FACILITY'OPERATING LICENSE DPR-52 L1'CENSEE EVENT REPORT (LER) 50-260/1998003 The enclosed report provides details concerning an automatic '*-

reactor scram on Unit 2 from 100 percent power. This event was -

the result of a valve failure which caused the generator stator cooling water to exceed the high temperature setpoint for the turbine trip which resulted in an automatic reactor scram.

This report is submitted in accordance with 10 CFR 50.73 (a)(2)(iv) as an event that resulted in an automatic actuation of an engineered safety feature, including the reactor protection system.

Sincerely, K. W. Singer cc: See page 2 W CPo 98ii090i'h3 'tt8i028 PDR ADOCK OS000260 S PDR

~I U.S. Nuclear Regulatory Commission Page 2 October 28, 1998 Enclosure-cc (Enclosure)'r.

A. W. De Agazio, Project Manager U.S. Nuclear Regulatory Commission

'One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. Harold 0. Christensen, Branch Chief U.S. Nuclear Regulatory Commission Region 11 61 Forsyth Street, S. W.

Suite 23T85 Atlanta, Georgia 30303 NRC Resident.-inspector Browns Ferry Nuclear Plant 10833 Shaw, Road Athens, Alabama 35611 Mr. L. Raghavan, Senior Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852