05000328/LER-1998-001, Forwards LER 98-001-00 Providing Details Re Automatic Turbine & Reactor Trip Due to Failure of Sudden Pressure Relay on B Phase Main Transformer

Forwards LER 98-001-00 Providing Details Re Automatic Turbine & Reactor Trip Due to Failure of Sudden Pressure Relay on B Phase Main Transformer

ML20154D014
Person / Time
Site:	Sequoyah
Issue date:	09/28/1998
From:	Bajestani M TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20154D017	List: 05000328/LER-1998-001, Forwards LER 98-001-00 Providing Details Re Automatic Turbine & Reactor Trip Due to Failure of Sudden Pressure Relay on B Phase Main Transformer 05000328/LER-1998-001-05, :on 980827,turbine Trip Occurred Followed by Reactor Trip.Caused by Failure of Sudden Pressure Relay on B Phase Main Transformer.Control Room Operators Responded & Removed,Inspected & Replaced Failed Relays
References
NUDOCS 9810070097
Download: ML20154D014 (2)

LER-1998-001, Forwards LER 98-001-00 Providing Details Re Automatic Turbine & Reactor Trip Due to Failure of Sudden Pressure Relay on B Phase Main Transformer

Event date:
Report date:
Reporting criterion:	10 CFR 50.73(a)(2)(iv), System Actuation
3281998001R00 - NRC Website

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, Termoseee VaNey Authority Post Offee Box 2000, Soddy Dasy, Tennessee 37379 2000 I

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' Masoud Bajestani

. Site Vee President '.

Sequoyah Nudear Plant I.p 1998

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l September 28, i

f U.S. Nuclear Regulatory Commission 10~CFR 50.73 ATTN:

Document Control Desk Washington, D.C.

20555 Gentlemen:

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- TENNESSEE VALLEY AUTHORITY - - SEQUOYAH NUCLEAR PLANT- (SON) i UNIT.2

- DOCKET NO. 50-328 - FACILITY OPERATING LICENSES

'DPR-79-- LICENSEE EVENTJREPORT (LER) 50-328/1998001.

L The enclosed -report provides' details concerning an automatic

turbine and reactor trip,.resulting from a failure of the M

isudden. pressure relay on the

'B' phase main transformer.

l This eventLis being reported in accordance with 10iCFR 50.73 (a) (2) (iv) as an event that resulted'in a

. automatic' actuation of engineered safety features, including the reactor protection system.

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Sincerely,

&'s;tanip i

e Masoud B i

Encloa I

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9810070097 990928 f

. PDR ADOCK 05000328 e

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l-13. S. Nuclear Regulatory Commission Page 2 September 28, 1998 Enclosure cc (Enclosure) :

INPO Records Center Institute of Nuclear Power Operations 700 Galleria Parkway Atlanta, Georgia 30339-5957 Mr.

R.

W.

Hernan, Project Manager U.S.

Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike "V ~'

Rockville, Maryland 20852-2739 NRC Resident Inspector Sequoyah' Nuclear Plant 2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379-3624

)

Regional Administrator U.S. Nuclear Regulatory Commission Region II Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, Georgia 30303-3415 I

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