RBG-22712, Forwards LERs 85-028-00,85-029-00,85-030-00 & 85-031-00

Forwards LERs 85-028-00,85-029-00,85-030-00 & 85-031-00

ML20137X052
Person / Time
Site:	River Bend
Issue date:	11/27/1985
From:	Booker J GULF STATES UTILITIES CO.
To:	NRC OFFICE OF ADMINISTRATION (ADM)
Shared Package
ML20137X056	List: 05000458/LER-1985-028, :on 851030,main Supply Breaker in 13.8 Kv Normal Switchgear Mistakenly Tripped,Causing Several Actuations.Caused by Personnel Error.Equipment Returned to Normal Operation 05000458/LER-1985-029, :on 851031,isolation of Div 1 RWCU Sys Occurred Causing Closing of Four Outboard Isolation Valves.Caused by Spurious Opening of Contacts on Riley Temp Modules.Mods to Temp Modules to Reduce Transient Susceptibility Begun 05000458/LER-1985-030, :on 851101,Div 1 RWCU Sys Isolation Occurred. Caused by Spurious Rwcs Filter Demineralizer Room 1 High Temp Alarm.Rwcu Sys Placed Back in Operation.Mod in Progress to Correct Flashing & Noise Spiking Problems 05000458/LER-1985-031, :on 851101,Div 1 RWCU Isolation Occurred.Caused by Actuation of Area Selection Switch When Operator Took RWCU Room Temps for Surveillance Test Procedure STP-000-001 & Failed to Place Switch in Bypass.Isolation Reset RBG-22712, Forwards LERs 85-028-00,85-029-00,85-030-00 & 85-031-00
References
RBG-22712, NUDOCS 8512100404
Download: ML20137X052 (1)

Text

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GULF STATES UTILITIES COMPANY MNt4etNDSTAflON PO$f OHFt BOX 220 6t iAANC:SvlLLE. Lout $1ANA 70779 Amt A Coot 604 636 sty'4 344 Dell November 27 1985 RBG-22712 File Nos. G9.5, G9.25.1.3 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C.

20555 Dear Sirt River Bond Station - Unit 1 Docket No. 50-458 Please find enclosed License Event Report Nos.85-028, 85-029,85-030 and 85-031 for River Bend Station - Unit 1.

These reports are submitted pursuant to 10CFR50.73.

Sincerely,

/,[. h M h J. E. Booker Manager-Engineering, Nuc1 car Fuels & Licensing River Bend Nuclear Group

[W !!) AN h

JEB/TFP/PM/ ERG /amg cc U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011 INPO Records Conter 1100 circin 75 Parkway Atlanta, GA 30339-3064 GD12100404 051127 PDH ADOCK 0S000458 0

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