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| 05000369/LER-1985-001, :on 841229,daily Health Physics Surveillance of Waste Gas Decay Tank Not Completed within 24 H Interval. Caused by Personnel Error.Use of Duties Checklist Required & Documentation of Duties Will Be Reviewed |
- on 841229,daily Health Physics Surveillance of Waste Gas Decay Tank Not Completed within 24 H Interval. Caused by Personnel Error.Use of Duties Checklist Required & Documentation of Duties Will Be Reviewed
| 10 CFR 50.73(a)(2)(1) |
| 05000369/LER-1985-002-01, :on 850113,required Quarterly Surveillance Not Performed within Allowable Interval.Caused by Personnel Error.Fuel Oil Transfer Pump Performance Test for Each Diesel Will Be Added to Computer Listing |
- on 850113,required Quarterly Surveillance Not Performed within Allowable Interval.Caused by Personnel Error.Fuel Oil Transfer Pump Performance Test for Each Diesel Will Be Added to Computer Listing
| 10 CFR 50.73(a)(2)(i) |
| 05000369/LER-1985-003-01, :on 850120,erroneous Signals to Reactor Protection Sys Created Likelihood of Spurious Trip.Caused by Freezing Temps in Area.On 850121,jumper Installed on Bistable Circuit to Thaw Instruments |
- on 850120,erroneous Signals to Reactor Protection Sys Created Likelihood of Spurious Trip.Caused by Freezing Temps in Area.On 850121,jumper Installed on Bistable Circuit to Thaw Instruments
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function |
| 05000369/LER-1985-003, Advises of Delay of Commitment in LER 85-003 to Reroute Instrument Impulse Lines & to Heat Trace & Insulate by Dec 1985,due to Design & Matl Lead Times.Implementation of Mods Delayed Until 1986 Outage | Advises of Delay of Commitment in LER 85-003 to Reroute Instrument Impulse Lines & to Heat Trace & Insulate by Dec 1985,due to Design & Matl Lead Times.Implementation of Mods Delayed Until 1986 Outage | |
| 05000369/LER-1985-004-01, :on 850128,reactor Tripped on lo-lo Steam Generator Level When Main Feedwater Pump Tripped on Low Suction Pressure Signal.Caused by Failure of Pneumatic Pressure Transmitter.Components Replaced |
- on 850128,reactor Tripped on lo-lo Steam Generator Level When Main Feedwater Pump Tripped on Low Suction Pressure Signal.Caused by Failure of Pneumatic Pressure Transmitter.Components Replaced
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| 05000369/LER-1985-005-01, :on 850201,determined Plant Outside Design Analyses Assumptions,Based on Westinghouse Response Re Negative Flux Rate Trip Setpoint.Bistable Setpoint Reduced to 2.5% Rated Thermal Power |
- on 850201,determined Plant Outside Design Analyses Assumptions,Based on Westinghouse Response Re Negative Flux Rate Trip Setpoint.Bistable Setpoint Reduced to 2.5% Rated Thermal Power
| 10 CFR 50.73(a)(2) |
| 05000369/LER-1985-006-01, :on 850205,reactor Tripped on High Negative Flux Rate Signal.Cause unknown.Post-trip Review Performed & Electronic Recorders Used to Monitor Possible Spikes |
- on 850205,reactor Tripped on High Negative Flux Rate Signal.Cause unknown.Post-trip Review Performed & Electronic Recorders Used to Monitor Possible Spikes
| 10 CFR 50.73(a)(2)(iv), System Actuation |
| 05000369/LER-1985-007-03, :on 850205,two ESF Actuations Occurred During Work on Reactor Protection & Nuclear Instrumentation Sys Channels.Caused by Procedures Allowing Simultaneous Sys Work.Procedures Revised |
- on 850205,two ESF Actuations Occurred During Work on Reactor Protection & Nuclear Instrumentation Sys Channels.Caused by Procedures Allowing Simultaneous Sys Work.Procedures Revised
| 10 CFR 50.73(a)(1), Submit an LER 10 CFR 50.73(a)(2)(iv), System Actuation |
| 05000369/LER-1985-008-01, :on 850206,discovered That Reactor Trip Switchgear Wiring Did Not Satisfy Separation Criteria for safety-related Circuits.Caused by Administrative/Procedural Deficiency.Procedures Revised |
- on 850206,discovered That Reactor Trip Switchgear Wiring Did Not Satisfy Separation Criteria for safety-related Circuits.Caused by Administrative/Procedural Deficiency.Procedures Revised
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function |
| 05000369/LER-1985-009-01, :on 850219,estmated 1 Cubic Ft of Contaminated Spent Resin Released from Vent.Resin Discovered on 850220 on Roof of Auxiliary Bldg & Other Bldgs.Caused by Personnel Error |
- on 850219,estmated 1 Cubic Ft of Contaminated Spent Resin Released from Vent.Resin Discovered on 850220 on Roof of Auxiliary Bldg & Other Bldgs.Caused by Personnel Error
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| 05000369/LER-1985-010-01, :on 850320,keyswitch for Door on Reactor Side of Containment Personnel Airlock in Bypass Position.Caused by Procedural Deficiency.Procedures Will Be Changed to Ensure Switches Returned to Active Position |
- on 850320,keyswitch for Door on Reactor Side of Containment Personnel Airlock in Bypass Position.Caused by Procedural Deficiency.Procedures Will Be Changed to Ensure Switches Returned to Active Position
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function |
| 05000369/LER-1985-011-01, :on 850409,samples Taken from Cold Leg Accumulator a Prior to Unit Shutdown Revealed Low Boron Concentration.Caused by Component Failure.Boron Concentration Returned to within Specs |
- on 850409,samples Taken from Cold Leg Accumulator a Prior to Unit Shutdown Revealed Low Boron Concentration.Caused by Component Failure.Boron Concentration Returned to within Specs
| 10 CFR 50.73(a)(2)(1) |
| 05000369/LER-1985-012-01, :from 850214-0425,fire Doors Normally Locked Closed Were Unlocked & Not Verified Closed Daily Nor Was Fire Watch Posted.Caused by Administrative/Procedural Deficiency.Required Surveillance Implemented |
- from 850214-0425,fire Doors Normally Locked Closed Were Unlocked & Not Verified Closed Daily Nor Was Fire Watch Posted.Caused by Administrative/Procedural Deficiency.Required Surveillance Implemented
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| 05000369/LER-1985-013-01, :on 850502,during Refueling,Gearcase Lubricating Grease Found in Electrical Compartments of Limitorque Motor Operated Valve Actuators 1VX-1A & 1VX-2B. Caused by Error During Previous Maint Work |
- on 850502,during Refueling,Gearcase Lubricating Grease Found in Electrical Compartments of Limitorque Motor Operated Valve Actuators 1VX-1A & 1VX-2B. Caused by Error During Previous Maint Work
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| 05000369/LER-1985-014-01, :on 850507,core Alterations Started W/O Completion of Required Surveillance on Source Range Neutron Flux Monitors While in Mode 6.Caused by Administrative/ Procedural Deficiency.New Procedure Planned |
- on 850507,core Alterations Started W/O Completion of Required Surveillance on Source Range Neutron Flux Monitors While in Mode 6.Caused by Administrative/ Procedural Deficiency.New Procedure Planned
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| 05000369/LER-1985-015-02, :on 850508,auxiliary & Reactor Bldg Side Door Lower Airlock Seals Deflated,Causing Loss of Containment Integrity.Caused by Maladjustment of Airlock Door Pin Limit Switches Combined W/Design Deficiency |
- on 850508,auxiliary & Reactor Bldg Side Door Lower Airlock Seals Deflated,Causing Loss of Containment Integrity.Caused by Maladjustment of Airlock Door Pin Limit Switches Combined W/Design Deficiency
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| 05000369/LER-1985-016-01, :on 850508,discovered That Temp Compensation Chart Not Incorporated in Hydrogen Analyzer Operation Emergency Procedure.Caused by Procedural Deficiency.Temp Compensation Charts Incorporated in Procedure |
- on 850508,discovered That Temp Compensation Chart Not Incorporated in Hydrogen Analyzer Operation Emergency Procedure.Caused by Procedural Deficiency.Temp Compensation Charts Incorporated in Procedure
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| 05000369/LER-1985-017-01, :on 850515,diesel Generator 1A Experienced Invalid Automatic Start Due to Unit Blackout Signal.Caused by Electrical Disturbance to Power Transmission Sys During Severe Storm & Listed Design Deficiency |
- on 850515,diesel Generator 1A Experienced Invalid Automatic Start Due to Unit Blackout Signal.Caused by Electrical Disturbance to Power Transmission Sys During Severe Storm & Listed Design Deficiency
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| 05000369/LER-1985-018-01, :on 850525,valve 1RV-429 in Containment Ventilation Cooling Water Sys Outside Containment Found Open,Allowing Flow Path Between Auxiliary Bldg & Upper Containment Through Inside Containment Valve |
- on 850525,valve 1RV-429 in Containment Ventilation Cooling Water Sys Outside Containment Found Open,Allowing Flow Path Between Auxiliary Bldg & Upper Containment Through Inside Containment Valve
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| 05000369/LER-1985-019-01, :on 850530,cable Transits Penetrating Units 1 & 2 Reactor Bldg Walls Discovered to Be Fire Barriers.Caused by Oversight During Development of Fire Barrier Insp Procedure.Procedures Revised |
- on 850530,cable Transits Penetrating Units 1 & 2 Reactor Bldg Walls Discovered to Be Fire Barriers.Caused by Oversight During Development of Fire Barrier Insp Procedure.Procedures Revised
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| 05000369/LER-1985-020-01, :on 850607,diesel Generator 1B Experienced Two Invalid Automatic Starts.Caused by Power Distribution Sys Disturbances Due to Severe Weather.Start Sys Will Be Modified |
- on 850607,diesel Generator 1B Experienced Two Invalid Automatic Starts.Caused by Power Distribution Sys Disturbances Due to Severe Weather.Start Sys Will Be Modified
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| 05000369/LER-1985-021, :on 850605,personnel Overexposure Occurred. Calculations Indicate Dose of 10.6 Rems to Skin & 0.03 Rem to Whole Body.Control & Disposal of Protective Clothing Revised to Prevent Recurrence of Incident |
- on 850605,personnel Overexposure Occurred. Calculations Indicate Dose of 10.6 Rems to Skin & 0.03 Rem to Whole Body.Control & Disposal of Protective Clothing Revised to Prevent Recurrence of Incident
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| 05000369/LER-1985-021-01, Forwards LER 85-021-01 Re Personnel Exposure,Initially Determined to Be Overexposure.Revised Calculation Indicates No Overexposure Occurred | Forwards LER 85-021-01 Re Personnel Exposure,Initially Determined to Be Overexposure.Revised Calculation Indicates No Overexposure Occurred | |
| 05000369/LER-1985-022-01, :on 850623,unplanned ESF Actuation Occurred on Loss of Both Main Feed Pumps Signal.Caused by Voltage Transient When Trend Chart Recorder Reinserted.Recorder Will Be Replaced |
- on 850623,unplanned ESF Actuation Occurred on Loss of Both Main Feed Pumps Signal.Caused by Voltage Transient When Trend Chart Recorder Reinserted.Recorder Will Be Replaced
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| 05000369/LER-1985-023-01, :on 850703,violation of Electrical Channel Separation Requirements by Temporary Cable Routing Discovered.Caused by Administrative/Procedural Deficiency. Cable Removed from Blue Channel Cable Tray |
- on 850703,violation of Electrical Channel Separation Requirements by Temporary Cable Routing Discovered.Caused by Administrative/Procedural Deficiency. Cable Removed from Blue Channel Cable Tray
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| 05000369/LER-1985-024-01, :on 850723,determined That Operability Test Not Performed on Station Standby Battery Charger.On 850813, Found That Standby Charger Placed in Svc Twice Supplying Vital Loads on Channels 2 & 4 |
- on 850723,determined That Operability Test Not Performed on Station Standby Battery Charger.On 850813, Found That Standby Charger Placed in Svc Twice Supplying Vital Loads on Channels 2 & 4
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| 05000369/LER-1985-025-01, :on 850909,train Chillers & Air Handling Unit for Control Ventilation Area Sys Tripped.Caused by Design Deficiency Allowing Both Chillers to Become Inoperable Due to Blown Fuse.Fuse Replaced.Wiring Reviewed |
- on 850909,train Chillers & Air Handling Unit for Control Ventilation Area Sys Tripped.Caused by Design Deficiency Allowing Both Chillers to Become Inoperable Due to Blown Fuse.Fuse Replaced.Wiring Reviewed
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| 05000369/LER-1985-026-01, :on 850911,vendor-employed Minor Exposed in Excess of Quarterly Dose Limit of 125 Mrem.Caused by Individual Misrepresenting Age to Work in Radiation Control Area.Birth Dates Will Be Verified |
- on 850911,vendor-employed Minor Exposed in Excess of Quarterly Dose Limit of 125 Mrem.Caused by Individual Misrepresenting Age to Work in Radiation Control Area.Birth Dates Will Be Verified
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| 05000369/LER-1985-027-01, :on 850911,pressurizer Heater Group 1B Inoperable While Diesel Generator 1A Inoperable.Caused by Personnel Error.Generator Returned to Operable.Rept Will Be Reviewed W/Personnel |
- on 850911,pressurizer Heater Group 1B Inoperable While Diesel Generator 1A Inoperable.Caused by Personnel Error.Generator Returned to Operable.Rept Will Be Reviewed W/Personnel
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| 05000369/LER-1985-028-01, :on 850919,environmentally Sealed Valcor Model 526 Inside Containment Valve Failed.Caused by Ruptured Seal as Result of Improper Installation.Four Valves Resealed & Returned to Svc.New Design Being Studied |
- on 850919,environmentally Sealed Valcor Model 526 Inside Containment Valve Failed.Caused by Ruptured Seal as Result of Improper Installation.Four Valves Resealed & Returned to Svc.New Design Being Studied
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| 05000369/LER-1985-029-01, :on 851001,Westinghouse Notified Util That Reanalysis of Peak Containment Pressure Calculation Resulted in Greater Value than Internal Pressure of 15 Psig.Emergency Procedure for Nd Spray Initiation Revised |
- on 851001,Westinghouse Notified Util That Reanalysis of Peak Containment Pressure Calculation Resulted in Greater Value than Internal Pressure of 15 Psig.Emergency Procedure for Nd Spray Initiation Revised
| 10 CFR 50.73(a)(2)(vi) |
| 05000369/LER-1985-030-01, :on 851009,valve 1RN-33 Found in Locked Closed Position Instead of Locked Open Due to Reversed Local Valve Position Indicator.Cause Unknown.Valve Opened & Properly Labeled |
- on 851009,valve 1RN-33 Found in Locked Closed Position Instead of Locked Open Due to Reversed Local Valve Position Indicator.Cause Unknown.Valve Opened & Properly Labeled
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| 05000369/LER-1985-031-01, :on 851017,Train B Chiller for Control Area Ventilation/Chilled Water Sys Tripped on Low Yc Flow While Train B Sys Inoperable.Cause Could Not Be Determined. Pressure Switch Repaired & Tubes Cleaned |
- on 851017,Train B Chiller for Control Area Ventilation/Chilled Water Sys Tripped on Low Yc Flow While Train B Sys Inoperable.Cause Could Not Be Determined. Pressure Switch Repaired & Tubes Cleaned
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| 05000369/LER-1985-032-01, :on 851018,QA Surveillance Revealed That Chemical & Vol Control Sys Valves 1NV-223 & 2NV-223 Not Partially Stroked.Caused by Lack of Relevant Procedures. Partial Stroke Requirement Will Be Deleted |
- on 851018,QA Surveillance Revealed That Chemical & Vol Control Sys Valves 1NV-223 & 2NV-223 Not Partially Stroked.Caused by Lack of Relevant Procedures. Partial Stroke Requirement Will Be Deleted
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| 05000369/LER-1985-033-01, :on 851030,momentary Blackout on Train B Occurred.Caused by Nuclear Control Operator Inadvertently Opening Diesel Generator Breaker.Procedures for Blackout Implemented.Collars Installed on Generator |
- on 851030,momentary Blackout on Train B Occurred.Caused by Nuclear Control Operator Inadvertently Opening Diesel Generator Breaker.Procedures for Blackout Implemented.Collars Installed on Generator
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| 05000369/LER-1985-034-01, :on 851102,reactor/turbine Trip on Steam Generator 1A lo-lo Level Occurred.Caused by Loss of Instrument Air Due to Rupture of Welded Seam on Flexible Pipe on Discharge Air Compressor B |
- on 851102,reactor/turbine Trip on Steam Generator 1A lo-lo Level Occurred.Caused by Loss of Instrument Air Due to Rupture of Welded Seam on Flexible Pipe on Discharge Air Compressor B
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| 05000369/LER-1985-035-01, :on 851030,B&W Fuel Assemblies Determined Incorrectly Stored Side by Side in Spent Fuel Pool.Caused by Inadequate Personnel Review of Tech Spec.Assemblies Placed in Checkerboard Pattern |
- on 851030,B&W Fuel Assemblies Determined Incorrectly Stored Side by Side in Spent Fuel Pool.Caused by Inadequate Personnel Review of Tech Spec.Assemblies Placed in Checkerboard Pattern
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| 05000369/LER-1985-036-01, :on 851119,reactor Tripped Due to Feedwater Pump Turbine Trip on High Discharge Pressure.Caused by Rod Control Sys Not Lowering Power Enough During Turbine Runback.Failed Fuse Will Be Replaced |
- on 851119,reactor Tripped Due to Feedwater Pump Turbine Trip on High Discharge Pressure.Caused by Rod Control Sys Not Lowering Power Enough During Turbine Runback.Failed Fuse Will Be Replaced
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| 05000369/LER-1985-037-01, :on 851210,Train a ESF Actuation Occurred Due to Actuation of Slave Relay in Reactor Protection Sys.Caused by Personnel Error.Safeguards Safety Injection Signal & Sequencer 1A Reset & Pumps Secured |
- on 851210,Train a ESF Actuation Occurred Due to Actuation of Slave Relay in Reactor Protection Sys.Caused by Personnel Error.Safeguards Safety Injection Signal & Sequencer 1A Reset & Pumps Secured
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| 05000369/LER-1985-038-01, :on 851222,reactor Tripped Due to Turbine Trip from 93% Power.Caused by Ground Fault within Motor Operated Disconnect (MOD) on Main Power Busline 1B.Unit Stabilized & MOD Repaired |
- on 851222,reactor Tripped Due to Turbine Trip from 93% Power.Caused by Ground Fault within Motor Operated Disconnect (MOD) on Main Power Busline 1B.Unit Stabilized & MOD Repaired
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| 05000369/LER-1985-039-01, :on 860101,discovered That Spent Fuel Pool Ventilation Performance Test Not Performed by Required Date of 851210.Caused by Personnel Error.Test Performed for Exhaust Fan 1A |
- on 860101,discovered That Spent Fuel Pool Ventilation Performance Test Not Performed by Required Date of 851210.Caused by Personnel Error.Test Performed for Exhaust Fan 1A
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| 05000369/LER-1985-039, :on 851210,spent Fuel Ventilation Performance Test Not Performed by Required Date.Caused by Personnel Error.Personnel Responsibility Will Be Assigned for Each Performance Test |
- on 851210,spent Fuel Ventilation Performance Test Not Performed by Required Date.Caused by Personnel Error.Personnel Responsibility Will Be Assigned for Each Performance Test
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