Forwards LER 80-085/01T-0
Person / Time
ML19345D321
Site:	Browns Ferry
Issue date:	12/05/1980
From:	Green H TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19345D322	List: 05000259/LER-1980-085, Forwards LER 80-085/01T-0 05000259/LER-1980-085-01, /01T-0:on 801123,river Temp Lowered Causing Differential Temp of Less than 5 F.Caused by Heavy Rainfall. Unit 3 Load Reduced & River Flow Increase Requested
References
NUDOCS 8012120502
Download: ML19345D321 (1)
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LER-1980-085, Forwards LER 80-085/01T-0

Event date:
Report date:
2591980085R00 - NRC Website
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text

1750 Chestnut Street Tower II m r 5a 1980 Mr. James P. O'asilly, Director U.S. I@elaar aegulatory cre=4* aim Office of Inspe:.ticm and Enforrv=mnt Regicn II 101 Marietta Street, Suite 3100 Atlanta, r @ 30303

Dear Mr. O'Beilly:

EFMw VAIL':,I NmcRITY - NOIE E<Y :;UCEAR FIINT IUIT 1 - DOCKET

10. 50-259 - FN'TTTTY CPE?ATI:U LICCEE DPR REPORDEC OCCURICCE REPCRP EFID-50-259/8085 n e 1 % report prcvides details ccncerning heavy rninen11.nica lowered the upstream river 9.'ature causing a differential riw r Smamture of greater than 5 m mis.6 is subnitted in armrdance with Browns Ferry ud.t 1 Technical SpeifirAticm 5.6.3.b.

Very truly yours, E N M C VALLEY N M ERITY H. J. Green Dirwivr of !@rlmr Power Enclosure (3) oc (P2v1 m m ):

Director (3)

Office c# Managenent Infczneticn and Fr@ma Otmtrol j

U.S. Zerlaar angulatory em=4 =aievi

'ueA4 p. Dc 20559 Director (40)

Office of Inspectimi and Enfvu -ut U.S. 2@elaar Regulatory hiaairm Washingtxzt, DC 20555 Mac. Bill Lavallaa Nuclear Safety Analysis Center Palo Alto, em14f= nia 94303 dk Mr. R. F. Sullivan, NBC Inspen/wu, Browns Ferry f

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8 01212 o go A

Licensee Event Report

Browns Ferry

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		Reporting criterion
05000259/LER-1980-001, Supplemental LER 80-001/01T-1:on 800107,during Performance of Ster 7902 Per IE Bulletin 79-23,diesel Generator 3A Lost Speed Control.Caused by Deteriorated Elastomer Spider Coupling.Spider Coupling Replaced	Supplemental LER 80-001/01T-1:on 800107,during Performance of Ster 7902 Per IE Bulletin 79-23,diesel Generator 3A Lost Speed Control.Caused by Deteriorated Elastomer Spider Coupling.Spider Coupling Replaced
05000259/LER-1980-001-01, /01T-0:on 800107,in Cold Shutdown While Performing Tests Per IE Bulletin 79-28,speed Control on Diesel Generator 3A Was Lost.Caused by Broken Coupling Which Connects Speed Pickup to Generator Shaft.Coupling Replaced	/01T-0:on 800107,in Cold Shutdown While Performing Tests Per IE Bulletin 79-28,speed Control on Diesel Generator 3A Was Lost.Caused by Broken Coupling Which Connects Speed Pickup to Generator Shaft.Coupling Replaced
05000296/LER-1980-001, Forwards LER 80-001/03L-0	Forwards LER 80-001/03L-0
05000260/LER-1980-001, Forwards LER 80-001/03L-0	Forwards LER 80-001/03L-0
05000296/LER-1980-001-03, /03L-0:on 791230,w/Unit 3 in Shutdown,Bus Tie Board Was de-energized for Startup.Caused by Feeder Cable Failure.Work in Progress to Bypass Bad Cable Sections	/03L-0:on 791230,w/Unit 3 in Shutdown,Bus Tie Board Was de-energized for Startup.Caused by Feeder Cable Failure.Work in Progress to Bypass Bad Cable Sections
05000260/LER-1980-001-03, /03L-0:on 791229,during Normal Operation,While Performing SI 4.2.B-1,switch 1 on Reactor Water Level LITS-3-58D Failed to Operate.Caused by Rendom Failure of Switch in Yarway Model 4418CE.Switch Replaced	/03L-0:on 791229,during Normal Operation,While Performing SI 4.2.B-1,switch 1 on Reactor Water Level LITS-3-58D Failed to Operate.Caused by Rendom Failure of Switch in Yarway Model 4418CE.Switch Replaced
05000259/LER-1980-002-03, /03L-0:on 800112,during Shutdown for Refueling, Wind Direction Channel at 33-ft Elevation Failed Upscale. Caused by Lightning Damage at Meteorological Tower.Series 312D Millivolt to Current Converter Repaired	/03L-0:on 800112,during Shutdown for Refueling, Wind Direction Channel at 33-ft Elevation Failed Upscale. Caused by Lightning Damage at Meteorological Tower.Series 312D Millivolt to Current Converter Repaired
05000259/LER-1980-002, Forwards LER 80-002/03L-0	Forwards LER 80-002/03L-0
05000260/LER-1980-002-03, /03L-0:on 791222,w/unit in Cold Shutdown,Found That Flow Control Valve 2-FCV-68-79 on Recirculation Sys Would Not Operate.Caused by Motor Pinion Gear Being Installed Backwards.Installment Procedures Will Be Revised	/03L-0:on 791222,w/unit in Cold Shutdown,Found That Flow Control Valve 2-FCV-68-79 on Recirculation Sys Would Not Operate.Caused by Motor Pinion Gear Being Installed Backwards.Installment Procedures Will Be Revised
05000296/LER-1980-002-03, /03L-0:on 800117,while Performing Surveillance Instruction 4.5.B.1.d,residual Heat Removal Sys Flow Control Valve FCV.74-73 Tripped in mid-position.Caused by Valve Stem Lubricant Losing Lubricity,Causing Force on Motor	/03L-0:on 800117,while Performing Surveillance Instruction 4.5.B.1.d,residual Heat Removal Sys Flow Control Valve FCV.74-73 Tripped in mid-position.Caused by Valve Stem Lubricant Losing Lubricity,Causing Force on Motor
05000260/LER-1980-002, Forwards LER 80-002/03L-0	Forwards LER 80-002/03L-0
05000296/LER-1980-002, Forwards LER 80-002/03L-0	Forwards LER 80-002/03L-0
05000260/LER-1980-003, Updated LER 80-03L/01X-1:on 800914,during EOC-3 Fuel Shuffling Operations,Fuel Assemblies Tz 758 & Tz 399 Discovered Misoriented 90 Degrees.Caused by Misorientation of 16 Fuel Assemblies During Previous Refueling Outage	Updated LER 80-03L/01X-1:on 800914,during EOC-3 Fuel Shuffling Operations,Fuel Assemblies Tz 758 & Tz 399 Discovered Misoriented 90 Degrees.Caused by Misorientation of 16 Fuel Assemblies During Previous Refueling Outage
05000259/LER-1980-003-03, /03L-0:on 800112,while Performing Local Leak Rate Testing During Refueling Shutdown,Path Leakage Through MSIVs for 3 of 4 Main Steam Lines Exceeded Leak Rate Per Tech Specs.Caused by Normal Wear & Erosion	/03L-0:on 800112,while Performing Local Leak Rate Testing During Refueling Shutdown,Path Leakage Through MSIVs for 3 of 4 Main Steam Lines Exceeded Leak Rate Per Tech Specs.Caused by Normal Wear & Erosion
05000296/LER-1980-003-03, /03L-0:on 800126,while Performing Control Rod Exercise,Control Rod 18-55 Would Not Insert W/Normal Drive Pressure.Caused by Failed Seal in Hydraulic Control Unit Directional Control Valve.Valve Repaired	/03L-0:on 800126,while Performing Control Rod Exercise,Control Rod 18-55 Would Not Insert W/Normal Drive Pressure.Caused by Failed Seal in Hydraulic Control Unit Directional Control Valve.Valve Repaired
05000260/LER-1980-003-03, /03L-0:on 800122,during Normal Operation,Momentary Breach of Secondary Containment Occurred When Air Lock Doors Between Turbine & Reactor Bldg Were Simultaneously Opened.Caused by Misaligned Latch Lock & Latch Bolt	/03L-0:on 800122,during Normal Operation,Momentary Breach of Secondary Containment Occurred When Air Lock Doors Between Turbine & Reactor Bldg Were Simultaneously Opened.Caused by Misaligned Latch Lock & Latch Bolt
05000296/LER-1980-003, Forwards LER 80-003/03L-0	Forwards LER 80-003/03L-0
05000259/LER-1980-003, Forwards LER 80-003/03L-0	Forwards LER 80-003/03L-0
05000260/LER-1980-004, Forwards LER 80-004/03L-0	Forwards LER 80-004/03L-0
05000296/LER-1980-004-03, /03L-0:on 800129,4160 Volt Bus Tie Board de-energized & Restored to Normal Cooling Tower Transformer Feeder.Caused by Need to Return Electrical Sys to Normal Configuration.No Recurrence Control Required	/03L-0:on 800129,4160 Volt Bus Tie Board de-energized & Restored to Normal Cooling Tower Transformer Feeder.Caused by Need to Return Electrical Sys to Normal Configuration.No Recurrence Control Required
05000296/LER-1980-004, Forwards LER 80-004/03L-0	Forwards LER 80-004/03L-0
05000259/LER-1980-004-01, /01T-0:on 800118,during Refueling Outage,Ndt Insp Revealed Linear Indication 7/8 Inch Long in Reactor or Water clean-up Sys Weld DRWC-1-2.Cause Unknown.Defect Will Be Removed & Weld Repaired Prior to Startup	/01T-0:on 800118,during Refueling Outage,Ndt Insp Revealed Linear Indication 7/8 Inch Long in Reactor or Water clean-up Sys Weld DRWC-1-2.Cause Unknown.Defect Will Be Removed & Weld Repaired Prior to Startup
05000260/LER-1980-004-03, /03L-0:on 800122,reactor Water Level Switch LIS-3- 203D Switch 2 Exceeded Tech Spec Limit During Normal Operation.Caused by Model 288A Switch Drifting Above Setpoint.Switch Tested,Inspected & Recalibr	/03L-0:on 800122,reactor Water Level Switch LIS-3- 203D Switch 2 Exceeded Tech Spec Limit During Normal Operation.Caused by Model 288A Switch Drifting Above Setpoint.Switch Tested,Inspected & Recalibr
05000259/LER-1980-004, Forwards LER 80-004/01T-0	Forwards LER 80-004/01T-0
05000296/LER-1980-005-03, /03L-0:on 800205,during Normal Operation,Fcv 74-73 Found Inoperable While Performing Surveillance Instruction. Caused by Random Failure of Gear Tooth in Limit Switch,Size SMB-2,Model 3-G.Limit Switch Replaced	/03L-0:on 800205,during Normal Operation,Fcv 74-73 Found Inoperable While Performing Surveillance Instruction. Caused by Random Failure of Gear Tooth in Limit Switch,Size SMB-2,Model 3-G.Limit Switch Replaced
05000260/LER-1980-005-03, /03L-0:on 800125,while Performing Special Instruction 4.2.B-1 During Normal Operation,Switches 1,2 & 4 on LIS-3-58A Did Not Operate at Proper Setpoint.Caused by Switch 4 Hanging on Magnet.Switches Adjusted	/03L-0:on 800125,while Performing Special Instruction 4.2.B-1 During Normal Operation,Switches 1,2 & 4 on LIS-3-58A Did Not Operate at Proper Setpoint.Caused by Switch 4 Hanging on Magnet.Switches Adjusted
05000260/LER-1980-005, Forwards LER 80-005/03L-0	Forwards LER 80-005/03L-0
05000259/LER-1980-005, Forwards LER 80-005/01T-0	Forwards LER 80-005/01T-0
05000296/LER-1980-005, Forwards LER 80-005/03L-0	Forwards LER 80-005/03L-0
05000259/LER-1980-005-01, /01T-0:on 800118,during Refueling Outage,While Performing Insp Per IE Bulletin 79-14,found No Seismic Restraints in Drywell of Reactor Bldg Closed Cooling Water Piping.Restraints Will Be Installed Prior to Startup	/01T-0:on 800118,during Refueling Outage,While Performing Insp Per IE Bulletin 79-14,found No Seismic Restraints in Drywell of Reactor Bldg Closed Cooling Water Piping.Restraints Will Be Installed Prior to Startup
05000296/LER-1980-006-03, /03L-0:on 800217,w/unit at Steady State Operation, Emergency Equipment Cooling Water Flow Did Not Meet Min Flow of 4 Gpm.Caused by Shells & Mud Preventing Adequate Flow Through Residual Heat Removal Pump 3B Seal Cooler Valve	/03L-0:on 800217,w/unit at Steady State Operation, Emergency Equipment Cooling Water Flow Did Not Meet Min Flow of 4 Gpm.Caused by Shells & Mud Preventing Adequate Flow Through Residual Heat Removal Pump 3B Seal Cooler Valve
05000260/LER-1980-006-03, /03L-0:on 800203,while Running Electrical Checks on Recirculation Pump,Reactor Recirculation Pump 2A Was Accidentally Tripped.Caused by Misinterpretation of Labels on Recirculation Pump Trip Breakers	/03L-0:on 800203,while Running Electrical Checks on Recirculation Pump,Reactor Recirculation Pump 2A Was Accidentally Tripped.Caused by Misinterpretation of Labels on Recirculation Pump Trip Breakers
05000296/LER-1980-006, Forwards LER 80-006/03L-0	Forwards LER 80-006/03L-0
05000260/LER-1980-006, Forwards LER 80-006/03L-0	Forwards LER 80-006/03L-0
05000259/LER-1980-006-03, /03L-0:on 800122,during Refueling Operations, Control Rod Driveline Accumulator Level Switch LS-1-305-129 on Unit 38-11 Was Found Inoperable.Caused by Broken Reed Switch.Switch Replaced	/03L-0:on 800122,during Refueling Operations, Control Rod Driveline Accumulator Level Switch LS-1-305-129 on Unit 38-11 Was Found Inoperable.Caused by Broken Reed Switch.Switch Replaced
05000259/LER-1980-006, Forwards LER 80-006/03L-0	Forwards LER 80-006/03L-0
05000260/LER-1980-007-03, /03L-0:on 800203,during Normal Operation,Reactor Recirculation Pump 2B Tripped.Caused by Pickup of Recirculation Motor Generator Set Generator Stator Temp Relay.Tests Run,No Problems Found	/03L-0:on 800203,during Normal Operation,Reactor Recirculation Pump 2B Tripped.Caused by Pickup of Recirculation Motor Generator Set Generator Stator Temp Relay.Tests Run,No Problems Found
05000296/LER-1980-007-03, /03L-0:on 800301,after Offsite Power Was Restored to 4-kV Bus Tie Board,Short Period of Time Elapsed Before Reclosure of Bus Tie Boarder Feeder Breaker.Apparent Disagreement in Time Is Still Being Investigated	/03L-0:on 800301,after Offsite Power Was Restored to 4-kV Bus Tie Board,Short Period of Time Elapsed Before Reclosure of Bus Tie Boarder Feeder Breaker.Apparent Disagreement in Time Is Still Being Investigated
05000260/LER-1980-007, Forwards LER 80-007/03L-0	Forwards LER 80-007/03L-0
05000259/LER-1980-007, Forwards LER 80-007/03L-0	Forwards LER 80-007/03L-0
05000259/LER-1980-007-03, /03L-0:on 800125,while Performing SI 4.2.A-16, Calibr Reactor Bldg Isolation &/Or Logic Timers,B Logic Channel Did Not Isolate.Caused by Intermittent Sticking of Relay R1B Resulting in Time Delay Contacts Being Closed	/03L-0:on 800125,while Performing SI 4.2.A-16, Calibr Reactor Bldg Isolation &/Or Logic Timers,B Logic Channel Did Not Isolate.Caused by Intermittent Sticking of Relay R1B Resulting in Time Delay Contacts Being Closed
05000296/LER-1980-007, Forwards LER 80-007/03L-0	Forwards LER 80-007/03L-0
05000296/LER-1980-008, Forwards LER 80-008/03L-0	Forwards LER 80-008/03L-0
05000260/LER-1980-008-31, /03L-0:on 800206,while Conducting Automatic Depressurization Sys Logic Functional Test,Relay 10A-K26 Manually Operated in Place of Relay 2E-K26 Causing Recirculation Pump 2B Trip.Caused by Operator Error	/03L-0:on 800206,while Conducting Automatic Depressurization Sys Logic Functional Test,Relay 10A-K26 Manually Operated in Place of Relay 2E-K26 Causing Recirculation Pump 2B Trip.Caused by Operator Error
05000296/LER-1980-008-03, /03L-0:on 800402,3B Diesel Generator Governor Actuator Would Not Respond Properly During Operability Surveillance Instruction.Cause Unknown.Oil Contamination Suspected.Sump Flushed & Refilled	/03L-0:on 800402,3B Diesel Generator Governor Actuator Would Not Respond Properly During Operability Surveillance Instruction.Cause Unknown.Oil Contamination Suspected.Sump Flushed & Refilled
05000259/LER-1980-008, Forwards Updated LER 80-008/03L-1	Forwards Updated LER 80-008/03L-1
05000260/LER-1980-008, Forwards LER 80-008/03L-0	Forwards LER 80-008/03L-0
05000259/LER-1980-008-03, During Scheduled Refueling Outage,Hpci Turbine Had Crack in Coupling Bearing Support Pedestal.Possibly Caused by Water Hammer in Main Steam Supply Line	During Scheduled Refueling Outage,Hpci Turbine Had Crack in Coupling Bearing Support Pedestal.Possibly Caused by Water Hammer in Main Steam Supply Line
05000296/LER-1980-009, Forwards LER 80-009/03L-0	Forwards LER 80-009/03L-0
05000296/LER-1980-009-03, /03L-0:on 800404,during Normal Operation,Relay 16A-K63B Overheated & Failed,Blowing Fuse Causing Containment Isolation Sys Group 6 Valves to Fail Closed. Caused by Natural Aging of Relay.Relay & Fuse Replaced	/03L-0:on 800404,during Normal Operation,Relay 16A-K63B Overheated & Failed,Blowing Fuse Causing Containment Isolation Sys Group 6 Valves to Fail Closed. Caused by Natural Aging of Relay.Relay & Fuse Replaced
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05000259/LER-1980-085, Forwards LER 80-085/01T-0

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Dear Mr. O'Beilly:

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