| | | Reporting criterion |
|---|
| 05000458/LER-1996-001-01, :on 960104,reactor Manually Scrammed Due to High Turbine Vibration.Due to Tight Clearance Between Low Pressure Turbine B Rotor & Stationary Parts.High Loads/Low Load Valves Being Modified |
- on 960104,reactor Manually Scrammed Due to High Turbine Vibration.Due to Tight Clearance Between Low Pressure Turbine B Rotor & Stationary Parts.High Loads/Low Load Valves Being Modified
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.72(b)(3)(ii), Degraded or Unanalyzed Condition 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) |
| 05000458/LER-1996-002, :on 960105,return Piping Weld for RHR Was Missing from Suppression Pool Level.Caused by Lack of Fusion on C Steel Side of Weld.Reassembled Pipe in Sys During Scheduled Maint Period Outage |
- on 960105,return Piping Weld for RHR Was Missing from Suppression Pool Level.Caused by Lack of Fusion on C Steel Side of Weld.Reassembled Pipe in Sys During Scheduled Maint Period Outage
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(x) 10 CFR 50.72(b)(3)(ii), Degraded or Unanalyzed Condition 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) |
| 05000458/LER-1996-003, :on 960113,ESF Actuations Occurred Due to Electrical Protection Assembly Breaker Trip.Electrical Protection Assembly Replaced |
- on 960113,ESF Actuations Occurred Due to Electrical Protection Assembly Breaker Trip.Electrical Protection Assembly Replaced
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i) 10 CFR 50.72(b)(3)(ii), Degraded or Unanalyzed Condition 10 CFR 50.73(a)(2) |
| 05000458/LER-1996-004, :on 960115,CI of Various BOP Valves Occurred Due to Inattention to Detail.I&C Technician Counseled |
- on 960115,CI of Various BOP Valves Occurred Due to Inattention to Detail.I&C Technician Counseled
| 10 CFR 50.73(a)(2)(iv), System Actuation |
| 05000458/LER-1996-005, :on 960116,discovered Noncompliance W/License Condition by Inadequate Tagging of Hose & Cabling Due to Mgt Change.Trained Operator & Revised Controlling Procedure |
- on 960116,discovered Noncompliance W/License Condition by Inadequate Tagging of Hose & Cabling Due to Mgt Change.Trained Operator & Revised Controlling Procedure
| 10 CFR 50.73(a)(2)(i) 10 CFR 50.72(b)(3)(ii), Degraded or Unanalyzed Condition 10 CFR 50.73(a)(2)(viii) 10 CFR 50.73(a)(2) |
| 05000458/LER-1996-006, :on 960118,misinterpretation of Containment isolation-shutdown Requirements Occurred.Caused by Failure to Have Adequately Considered Plant Operating Practices. In-progress Fuel Movement Activities Suspended |
- on 960118,misinterpretation of Containment isolation-shutdown Requirements Occurred.Caused by Failure to Have Adequately Considered Plant Operating Practices. In-progress Fuel Movement Activities Suspended
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.72(b)(3)(ii), Degraded or Unanalyzed Condition 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) |
| 05000458/LER-1996-007, :on 960214,failure of Containment Airlock Pneumatic Sys Ball Valve Occurred.Caused by Debris Internal to Sys.Inspected,Lubricated & Properly Torqued Ball Valves & Initiated Design Modification |
- on 960214,failure of Containment Airlock Pneumatic Sys Ball Valve Occurred.Caused by Debris Internal to Sys.Inspected,Lubricated & Properly Torqued Ball Valves & Initiated Design Modification
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) |
| 05000458/LER-1996-008, :on 960214,mispositioned Drywell Pressure Transmitter Isolation Valve Caused Condition Prohibited by Ts.Restored & Verified Position of Other SR Instrumentation Valves |
- on 960214,mispositioned Drywell Pressure Transmitter Isolation Valve Caused Condition Prohibited by Ts.Restored & Verified Position of Other SR Instrumentation Valves
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 05000458/LER-1996-009, :on 960214,DG Overspeed Tripped.Caused by Field Flash Relay Failure.Component Replaced & in-depth Evaluation Performed on Effects of Max Temp in Cabinet |
- on 960214,DG Overspeed Tripped.Caused by Field Flash Relay Failure.Component Replaced & in-depth Evaluation Performed on Effects of Max Temp in Cabinet
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.72(b)(3)(ii), Degraded or Unanalyzed Condition 10 CFR 50.73(a)(2) |
| 05000458/LER-1996-010, :on 960429,reactor SLMCPR Value Given in TS Was non-conservative.Caused by Default Passed to Engineer Performing Analysis.Ge Has Calculated Revised SLMCPR & Associated Operating Limit MCPRs |
- on 960429,reactor SLMCPR Value Given in TS Was non-conservative.Caused by Default Passed to Engineer Performing Analysis.Ge Has Calculated Revised SLMCPR & Associated Operating Limit MCPRs
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.72(b)(3)(ii), Degraded or Unanalyzed Condition 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) 10 CFR 50.73(a)(2)(1) |
| 05000458/LER-1996-011, :on 960516,personnel Error Resulted in Missed Surveillance & Dry Floor Drain Sump Leakage Detection Monitoring Instrumentation Exceeded TS Allowed Outage Times. Appropriate Disciplinary Actions Taken |
- on 960516,personnel Error Resulted in Missed Surveillance & Dry Floor Drain Sump Leakage Detection Monitoring Instrumentation Exceeded TS Allowed Outage Times. Appropriate Disciplinary Actions Taken
| 10 CFR 50.73(a)(2) |
| 05000458/LER-1996-012, :on 960606,manual Reactor Scram Occurred Due to Faulty electro-hydraulic Control Power Supplies.Replaced Power Supplies W/Acceptable Ones |
- on 960606,manual Reactor Scram Occurred Due to Faulty electro-hydraulic Control Power Supplies.Replaced Power Supplies W/Acceptable Ones
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.72(b)(3)(ii), Degraded or Unanalyzed Condition 10 CFR 50.73(a)(2) |
| 05000458/LER-1996-013, :on 960617,Division I RCIC Isolation Occurred Due to Spurious Signal Generated from Failed Trip Unit. Failed Trip Was Replaced & RCIC Sys Was Restored to Operability 960618 |
- on 960617,Division I RCIC Isolation Occurred Due to Spurious Signal Generated from Failed Trip Unit. Failed Trip Was Replaced & RCIC Sys Was Restored to Operability 960618
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(viii) |
| 05000458/LER-1996-014-01, Forwards LER 96-014-01,incorporating Changes Listed | Forwards LER 96-014-01,incorporating Changes Listed | |
| 05000458/LER-1996-014, :on 960710,surveillances Were Missed Due to Human Errors.Caused by Personnel Errors,Procedural Inadequacies & Inadequate Reviews of Test Results.Plant Shut Down to Perform Missed Surveillance |
- on 960710,surveillances Were Missed Due to Human Errors.Caused by Personnel Errors,Procedural Inadequacies & Inadequate Reviews of Test Results.Plant Shut Down to Perform Missed Surveillance
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) |
| 05000458/LER-1996-015-01, :on 961030,inadvertent Bumping of Recently Installed Power Supply Fuse Resulting in Isolation Valve Closure Occurred.Caused by Risk & Consequences Associated with Depressing.Rcic Isolation Were Identified |
- on 961030,inadvertent Bumping of Recently Installed Power Supply Fuse Resulting in Isolation Valve Closure Occurred.Caused by Risk & Consequences Associated with Depressing.Rcic Isolation Were Identified
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.72(b)(3)(ii), Degraded or Unanalyzed Condition 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) |
| 05000458/LER-1996-016, :on 960806,control Bldg Chiller Timer Defeat Switch Was Left in Test Position.Caused by Inadequate Turnover During Test Evolution.Switch Was Returned to Normal & Sys Lineup Was Performed |
- on 960806,control Bldg Chiller Timer Defeat Switch Was Left in Test Position.Caused by Inadequate Turnover During Test Evolution.Switch Was Returned to Normal & Sys Lineup Was Performed
| 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.72(b)(3)(ii), Degraded or Unanalyzed Condition 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) |