05000260/LER-1997-007, Forwards LER 97-007-00 Re Reactor Scram from 70 Percent Power.Event Resulted from Pressure Perturbation in electro- Hydraulic Control Sys at Turbine Control Valves

Forwards LER 97-007-00 Re Reactor Scram from 70 Percent Power.Event Resulted from Pressure Perturbation in electro- Hydraulic Control Sys at Turbine Control Valves

ML18038B994
Person / Time
Site:	Browns Ferry
Issue date:	11/25/1997
From:	Crane C TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML18038B995	List: 05000260/LER-1997-007, Forwards LER 97-007-00 Re Reactor Scram from 70 Percent Power.Event Resulted from Pressure Perturbation in electro- Hydraulic Control Sys at Turbine Control Valves 05000260/LER-1997-007-02, :on 971028,Unit 2 Automatically Scrammed.Caused by Momentary Pressure Drop in electro-hydraulic Control Sys at Turbine Control Valves.Scram Contactor Replaced
References
NUDOCS 9712020125
Download: ML18038B994 (6)

LER-1997-007, Forwards LER 97-007-00 Re Reactor Scram from 70 Percent Power.Event Resulted from Pressure Perturbation in electro- Hydraulic Control Sys at Turbine Control Valves

Event date:
Report date:
Reporting criterion:	10 CFR 50.73(a)(2)(iv), System Actuation
2601997007R00 - NRC Website

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REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9712020125 DOC.DATE: 97/11/25 NOTARIZED: NO FACZL:50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee AUTH.NBME AUTHOR AFFILIATION CRANE, C.'M.

Tennessee Valley Authority RECZP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

DOCKET 05000260 SUBJECT':

Forwards LER 97-007-00 re reactor scram resulting from pressure perturbation in electro-hydraulic control sys.Rept submitted in accordance w/10CFR50.73(a)(2)(iv) as event, resulted in automatic actuation of ESF, including RPS.

DISTRIBUTION CODE: IE22T COPIES RECEIVED:LTR r

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SIZE: Z +

TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.

NOTES:

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1 RECIPXENT ID CODE/NAME DEAGAZIO,A'OPIES LTTR ENCL 1

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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:

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Tennessee valley Authority. p"s; ctime Bcx 2000. Deca! ur. Azoarna 35609 2000 Christopher M. Chris Crane Vice Pres~cent, Br',rs "=..<<"r 8 c'ear Pant November 25, 1997 U.S.. Nuclear Regulatory Commission ATTN:

Document Control Desk Washington, D.

C.

20555 10 CFR 50.73

Dear Sir,

BROWNS'ERRY NUCLEAR PLANT (BFN)

UNITS 2 - DOCKET NO. 50-260 FACILITY OPERATING LICENSE DPR-52 LICENSEE EVENT REPORT

{LER) 50-260/97007 The enclosed report provides details concerning a reactor scram from 70 percent power.

This event resulted from a pressure perturbation in the Electro-Hydraulic Control System at the turbine control valves.

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, C.

M. Crane c:

Se page 2

'97i2020i25 'tt7Ii25 PDR ADOCK 05000260 S

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U. S. Nuclear Regulatory Commission Page 2

November 25, 1997 Enclosure cc (Enclosure):

Mr. Mark S. Lesser, Branch Chief U.S. Nuclear Regulatory Commission Region iX 61 Forsyth Street, S.

W.

Suite 23T85

Atlanta, Georgia 30303 NRC Resident inspector Browns Ferry Nuclear Plant 10833 Shaw Road

Athens, Alabama 35611 Mr. J.

F. Williams,. Project Manager U.S,. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852

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