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| 05000341/LER-1996-001, :on 960205,EDG CW Function Potentially Lost Due to Ice Formation in Pump Columns.Performed Operability Determination on Dgsw Pumps B & C |
- on 960205,EDG CW Function Potentially Lost Due to Ice Formation in Pump Columns.Performed Operability Determination on Dgsw Pumps B & C
| 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability |
| 05000341/LER-1996-002, :on 960207,ESFA of Torus to Drywell Vacuum Breaker Occurred Due to Personnel Error.Enhanced TRS Procedure to Improve Human Factors Aspect of Using Procedure |
- on 960207,ESFA of Torus to Drywell Vacuum Breaker Occurred Due to Personnel Error.Enhanced TRS Procedure to Improve Human Factors Aspect of Using Procedure
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 05000341/LER-1996-003, :on 960216,ECCS Outside Design Basis During ESF Bus 64C Undervoltage Protection Testing Occurred.Caused by Consequences of Bus 64C Udervoltage Testing Lineup.Dedicated Operator W/No Duties Stationed in CR |
- on 960216,ECCS Outside Design Basis During ESF Bus 64C Undervoltage Protection Testing Occurred.Caused by Consequences of Bus 64C Udervoltage Testing Lineup.Dedicated Operator W/No Duties Stationed in CR
| 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition |
| 05000341/LER-1996-004, :on 960310,high Particulate Levels Found in EDG 11 Fuel Oil.Caused by Draining Day Tank Into Bottom of FOST Day Before Maint Creating Turbulence Near Sampling Point. Changed Out Fuel Oil in FOST for EDG 11 W/Fresh Fuel Oil |
- on 960310,high Particulate Levels Found in EDG 11 Fuel Oil.Caused by Draining Day Tank Into Bottom of FOST Day Before Maint Creating Turbulence Near Sampling Point. Changed Out Fuel Oil in FOST for EDG 11 W/Fresh Fuel Oil
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(1) |
| 05000341/LER-1996-005-01, Forwards LER 96-005-01 Re EECW Being in Unanalyzed Condition & Subsequent TS Required Shutdown.Commitments Made by Util, Listed | Forwards LER 96-005-01 Re EECW Being in Unanalyzed Condition & Subsequent TS Required Shutdown.Commitments Made by Util, Listed | |
| 05000341/LER-1996-005, :on 960327,declared EECW Inoperable & TS Required Shutdown Commenced Due to Design Issue.Design Mod Implemented to Provide SR make-up Sources for Both make-up Water & Nitrogen to EECW make-up Tank |
- on 960327,declared EECW Inoperable & TS Required Shutdown Commenced Due to Design Issue.Design Mod Implemented to Provide SR make-up Sources for Both make-up Water & Nitrogen to EECW make-up Tank
| 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown |
| 05000341/LER-1996-006, :on 960324,missed ASME Section 11 Required Surveillance Insp.Caused by Inadequate Review of Change in Inservice Testing Program.Check Valve Inspected & Relief Request VR-48 Revised |
- on 960324,missed ASME Section 11 Required Surveillance Insp.Caused by Inadequate Review of Change in Inservice Testing Program.Check Valve Inspected & Relief Request VR-48 Revised
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| 05000341/LER-1996-007, :on 960419,RCIC Sys Declared Inoperable Due to Turbine Shaft Gland Leakage.Caused by Steam Leakage Past Seat of RCIC Turbine Steam Admission Valve |
- on 960419,RCIC Sys Declared Inoperable Due to Turbine Shaft Gland Leakage.Caused by Steam Leakage Past Seat of RCIC Turbine Steam Admission Valve
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 05000341/LER-1996-008, :on 951213,one Megawatt Thermal Nonconservative Bias Found in Core Thermal Power Calculation.Caused by Heat Pump Seal Purge Flow Being Considered Insignificant During Original Heat Balance & Thermal Power Calculation |
- on 951213,one Megawatt Thermal Nonconservative Bias Found in Core Thermal Power Calculation.Caused by Heat Pump Seal Purge Flow Being Considered Insignificant During Original Heat Balance & Thermal Power Calculation
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| 05000341/LER-1996-009, :on 960526,ESF Actuation Occurred.Caused by Plant Operator Attempting to Replace Burned Out Indicating Bulb,Cracked Socket Separated Completely,Resulting in Short Circuit.Lamp Socket Wires Taped |
- on 960526,ESF Actuation Occurred.Caused by Plant Operator Attempting to Replace Burned Out Indicating Bulb,Cracked Socket Separated Completely,Resulting in Short Circuit.Lamp Socket Wires Taped
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| 05000341/LER-1996-010, :on 960719,ESF Actuation & HPCI System Suction Flow Path Transfer Occurred.Caused by Radio Frequency Interference.Posting of CST Instrument Panel and CST Area Completed & Work Request to Repair Phone Initiated |
- on 960719,ESF Actuation & HPCI System Suction Flow Path Transfer Occurred.Caused by Radio Frequency Interference.Posting of CST Instrument Panel and CST Area Completed & Work Request to Repair Phone Initiated
| 10 CFR 50.73(a)(2)(iv), System Actuation |
| 05000341/LER-1996-011, :on 960928,ESF Actuation of Torus to Drywell Vacuum Breaker Occurred.Caused by Lack of Awareness on Part of Operator.Rhr Sys Operating Procedures Revised |
- on 960928,ESF Actuation of Torus to Drywell Vacuum Breaker Occurred.Caused by Lack of Awareness on Part of Operator.Rhr Sys Operating Procedures Revised
| 10 CFR 50.73(a)(2)(iv), System Actuation |
| 05000341/LER-1996-012, :on 961003,engineered Safety Features Actuation of Primary Containment Isolation Valve B3100f014A Occurred. Caused by Personnel Error.Incident Was Discussed with I&C Personnel in Tailgate Meeting |
- on 961003,engineered Safety Features Actuation of Primary Containment Isolation Valve B3100f014A Occurred. Caused by Personnel Error.Incident Was Discussed with I&C Personnel in Tailgate Meeting
| 10 CFR 50.73(a)(2)(iv), System Actuation |
| 05000341/LER-1996-013, :on 961004,determined Nonconservative Bias Existed for Calculating Core Thermal Power Due to Reactor Recirculation Pump Power Computer Point Scaling Error. Discrepancy Corrected |
- on 961004,determined Nonconservative Bias Existed for Calculating Core Thermal Power Due to Reactor Recirculation Pump Power Computer Point Scaling Error. Discrepancy Corrected
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| 05000341/LER-1996-014, :on 961004,Div 2 UHS cross-connect Valve de-energized.Caused by Loose Set Screw on Valve Operator Spline bushing.Cross-connect Path Established & Valves Will Also Be Modified W/Set Screw Recess |
- on 961004,Div 2 UHS cross-connect Valve de-energized.Caused by Loose Set Screw on Valve Operator Spline bushing.Cross-connect Path Established & Valves Will Also Be Modified W/Set Screw Recess
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| 05000341/LER-1996-015, :on 961015,ESF Actuation of Division 2 EECW Occurred During Fill & Vent Evolution of Portion of Sys Located in Drywell Due to Personnel Error.Licensed & non-licensed Operators Were Trained |
- on 961015,ESF Actuation of Division 2 EECW Occurred During Fill & Vent Evolution of Portion of Sys Located in Drywell Due to Personnel Error.Licensed & non-licensed Operators Were Trained
| 10 CFR 50.73(a)(2)(iv), System Actuation |
| 05000341/LER-1996-016-01, Forwards LER 96-016-01 Which Deals W/Esf Actuation | Forwards LER 96-016-01 Which Deals W/Esf Actuation | |
| 05000341/LER-1996-016, :on 961016,ESFA Occurred Due to Loss of Power to DC Bus.Revised Surveillance Procedure & Reviewed Event in 1997 Cycle 1 Electrical Maint Requalification Training.W/ |
- on 961016,ESFA Occurred Due to Loss of Power to DC Bus.Revised Surveillance Procedure & Reviewed Event in 1997 Cycle 1 Electrical Maint Requalification Training.W/
| 10 CFR 50.73(a)(2)(iv), System Actuation |
| 05000341/LER-1996-017-01, Forwards LER 96-017-01,re Failure of Multiple SRVs to Open within Required TS Allowable Tolerance.Listed Commitments Included | Forwards LER 96-017-01,re Failure of Multiple SRVs to Open within Required TS Allowable Tolerance.Listed Commitments Included | |
| 05000341/LER-1996-017-02, Forwards LER 96-017-02,re Failure of Multiple SRVs to Open within TS Required Tolerance.Commitments Made within Ltr, Listed | Forwards LER 96-017-02,re Failure of Multiple SRVs to Open within TS Required Tolerance.Commitments Made within Ltr, Listed | 10 CFR 50.73(a)(2)(v), Loss of Safety Function |
| 05000341/LER-1996-017-03, Forwards LER 96-017-03 Re Failure of SRVs to Open within Specified TS Required Tolerance.Revised Commitments Made by Util,Listed | Forwards LER 96-017-03 Re Failure of SRVs to Open within Specified TS Required Tolerance.Revised Commitments Made by Util,Listed | |
| 05000341/LER-1996-018, :on 961105,w/plant in Operational Condition 4 Reactor Head Stud 27 Inadvertently Detensioned During Trim Adjustments.Caused by Transposition Error in Elongation Data Sheet.Stud 27 Retensioned & Procedures Revised |
- on 961105,w/plant in Operational Condition 4 Reactor Head Stud 27 Inadvertently Detensioned During Trim Adjustments.Caused by Transposition Error in Elongation Data Sheet.Stud 27 Retensioned & Procedures Revised
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(1) |
| 05000341/LER-1996-019, :on 961119,inoperable Standby Feedwater Sys Flow Path for 10CFR50,App R Application Discovered.Caused by Inadequate Design Review of App R Dedicated Shutdown. Operating Procedures Revised |
- on 961119,inoperable Standby Feedwater Sys Flow Path for 10CFR50,App R Application Discovered.Caused by Inadequate Design Review of App R Dedicated Shutdown. Operating Procedures Revised
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 05000341/LER-1996-020, :on 961203,loss of Shutdown Cooling Was Noted Due to ESF Actuation.Control Circuitry for Closure of Valve Investigated & All Connections Having Potential to de-energize Relay Checked |
- on 961203,loss of Shutdown Cooling Was Noted Due to ESF Actuation.Control Circuitry for Closure of Valve Investigated & All Connections Having Potential to de-energize Relay Checked
| 10 CFR 50.73(a)(2) |
| 05000341/LER-1996-021, :on 961204,automatic Reactor Scram on high-high Scram Discharge Volume During Shutdown Occurred. Caused by Personnel Error.Night Order Was Issued |
- on 961204,automatic Reactor Scram on high-high Scram Discharge Volume During Shutdown Occurred. Caused by Personnel Error.Night Order Was Issued
| 10 CFR 50.73(a)(2)(iv), System Actuation |
| 05000341/LER-1996-022, :on 961207,TS 3.3.7.5 Required Plant SD Occurred Due to Lack of Control Room Indication for Safety Relief Valve.Pressure Switch Sensing Tap for SRV a Relocated |
- on 961207,TS 3.3.7.5 Required Plant SD Occurred Due to Lack of Control Room Indication for Safety Relief Valve.Pressure Switch Sensing Tap for SRV a Relocated
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 05000341/LER-1996-023, :on 961224,TS Required shutdown-drywall to Suppression Chamber Vacuum Breaker Failed to Indicate Closed.Caused by Insufficient Detail in Maint Procedures. T2300F400J Vacuum Breaker Replaced |
- on 961224,TS Required shutdown-drywall to Suppression Chamber Vacuum Breaker Failed to Indicate Closed.Caused by Insufficient Detail in Maint Procedures. T2300F400J Vacuum Breaker Replaced
| 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown |
| 05000341/LER-1996-024, :on 961228,automatic Reactor Scram Occurred Due to Perturbations in Reference Leg Backfill Sys While Placing Sys in Service.Procedures Revised |
- on 961228,automatic Reactor Scram Occurred Due to Perturbations in Reference Leg Backfill Sys While Placing Sys in Service.Procedures Revised
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