| | | Reporting criterion |
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| 05000309/LER-1980-001, Forwards LER 80-001/01T-1 | Forwards LER 80-001/01T-1 | |
| 05000309/LER-1980-001-01, /01T-1:on 800110,review of Steam Line Break Analysis Revealed Incorrect Assumption Re Feedwater Regulating Valve Bypass Valves at Low Power Levels.Cause Not Stated.Valves Positioned to Limit post-trip Feedwater Flow | /01T-1:on 800110,review of Steam Line Break Analysis Revealed Incorrect Assumption Re Feedwater Regulating Valve Bypass Valves at Low Power Levels.Cause Not Stated.Valves Positioned to Limit post-trip Feedwater Flow | |
| 05000309/LER-1980-002, Forwards LER 80-002/03L-0 | Forwards LER 80-002/03L-0 | |
| 05000309/LER-1980-002-03, /03L-0:on 800108,during Surveillance Testing of Containment Personnel hatch,O-ring Seal on Inner Door Found Leaking excessively.O-rings Replaced | /03L-0:on 800108,during Surveillance Testing of Containment Personnel hatch,O-ring Seal on Inner Door Found Leaking excessively.O-rings Replaced | |
| 05000309/LER-1980-003-03, /03L-0:on 800115,during Routine Refueling Interval Surveillance of B Train Diesel Generator,Generator Output Breaker Failed to Remain Closed Following Fast Start Test. Caused by Weakened Prop Pin Spring on Trip Latch Rollers | /03L-0:on 800115,during Routine Refueling Interval Surveillance of B Train Diesel Generator,Generator Output Breaker Failed to Remain Closed Following Fast Start Test. Caused by Weakened Prop Pin Spring on Trip Latch Rollers | |
| 05000309/LER-1980-003, Forwards LER 80-003/03L-0 | Forwards LER 80-003/03L-0 | |
| 05000309/LER-1980-004, Forwards LER 80-004/01T-1 | Forwards LER 80-004/01T-1 | |
| 05000309/LER-1980-004-01, /01T-1:on 800131,during Routine Insp of Fuel Assemblies Being Removed from Core as Part of Core 4-5 Refueling,Nine Assemblies Found Containing Leaking Fuel Pins.Caused by Crud Deposition During Operation | /01T-1:on 800131,during Routine Insp of Fuel Assemblies Being Removed from Core as Part of Core 4-5 Refueling,Nine Assemblies Found Containing Leaking Fuel Pins.Caused by Crud Deposition During Operation | |
| 05000309/LER-1980-005, Forwards LER 80-005/03L-0 | Forwards LER 80-005/03L-0 | |
| 05000309/LER-1980-005-03, /03L-0:on 800131,during Refueling Operation Leakage Was Noted from Crack in 3/4-inch Drain Line on Loop 1 Safety Injection Header.Cause Unknown.Lines Have Been Eliminated & Associated Header Penetrations Capped | /03L-0:on 800131,during Refueling Operation Leakage Was Noted from Crack in 3/4-inch Drain Line on Loop 1 Safety Injection Header.Cause Unknown.Lines Have Been Eliminated & Associated Header Penetrations Capped | |
| 05000309/LER-1980-006, Forwards LER 80-006/01T-1 | Forwards LER 80-006/01T-1 | |
| 05000309/LER-1980-006-01, /01T-1:on 800312,routine Investigation of Steam Generator Level Indication Channel Failure Determined That Cause of Failure Was Improper Alignment of Component Following Transmitter Mod.Plant Was Placed in Hot Shutdown | /01T-1:on 800312,routine Investigation of Steam Generator Level Indication Channel Failure Determined That Cause of Failure Was Improper Alignment of Component Following Transmitter Mod.Plant Was Placed in Hot Shutdown | |
| 05000309/LER-1980-007-03, /03L-0:on 800319,during Routine Power Escalation Following Refueling Shutdown,Rhr Valves RH-8 & 10 Found Open & Unlocked.Six Addl Valves Found Unlocked.Caused by Personnel Error.Operators Reinstructed on Procedures | /03L-0:on 800319,during Routine Power Escalation Following Refueling Shutdown,Rhr Valves RH-8 & 10 Found Open & Unlocked.Six Addl Valves Found Unlocked.Caused by Personnel Error.Operators Reinstructed on Procedures | |
| 05000309/LER-1980-007, Forwards LER 80-007/03L-0 | Forwards LER 80-007/03L-0 | |
| 05000309/LER-1980-008, Forwards LER 80-008/03L-0 | Forwards LER 80-008/03L-0 | |
| 05000309/LER-1980-008-03, /03L-0:on 800321,during Special Testing of Trip Matrix Portion of Reactor Protective Sys,Found One Set of Relay Contacts on One Matrix Relay Would Not Open Reliably Upon de-energization.Cause Not Stated | /03L-0:on 800321,during Special Testing of Trip Matrix Portion of Reactor Protective Sys,Found One Set of Relay Contacts on One Matrix Relay Would Not Open Reliably Upon de-energization.Cause Not Stated | |
| 05000309/LER-1980-009-03, /03L-0:on 800408,during Routine Monthly Surveillance Procedure 3.1.2,LPIS Loop 3 Header Stop Valve Failed to Operate as Required.Caused Unstated.Valve Recycled & Operated Satisfactorily | /03L-0:on 800408,during Routine Monthly Surveillance Procedure 3.1.2,LPIS Loop 3 Header Stop Valve Failed to Operate as Required.Caused Unstated.Valve Recycled & Operated Satisfactorily | |
| 05000309/LER-1980-009, Forwards LER 80-009/03L-0 | Forwards LER 80-009/03L-0 | |
| 05000309/LER-1980-010-03, /03L-0:on 800408,during Routine Surveillance Test of Auxiliary Feedwater Pump P-25A,small Amount of Oil Was Discharged from Pump Thrust Bearing.Cause Unknown.Personnel Have Been Instructed to Be Alert for Repetition of Event | /03L-0:on 800408,during Routine Surveillance Test of Auxiliary Feedwater Pump P-25A,small Amount of Oil Was Discharged from Pump Thrust Bearing.Cause Unknown.Personnel Have Been Instructed to Be Alert for Repetition of Event | |
| 05000309/LER-1980-010, Forwards LER 80-010/03L-0 | Forwards LER 80-010/03L-0 | |
| 05000309/LER-1980-011-03, /03L-0:on 800422,during Special Testing of Trip Matrix Portion of Reactor Protection Sys,One Set of Relay Contacts on Relay Would Not Open Reliably Upon de-energization of Relay.Cause Not Stated | /03L-0:on 800422,during Special Testing of Trip Matrix Portion of Reactor Protection Sys,One Set of Relay Contacts on Relay Would Not Open Reliably Upon de-energization of Relay.Cause Not Stated | |
| 05000309/LER-1980-011, Forwards LER 80-011/03L-0 | Forwards LER 80-011/03L-0 | |
| 05000309/LER-1980-012-03, /03L-0:on 800506,during Monthly Surveillance Test Procedure,Low Power Safety Injection Loop 3 Header Stop Valve Failed to Operate as Required.Caused by Broken Weld in Coupling of Operating Extension Shaft | /03L-0:on 800506,during Monthly Surveillance Test Procedure,Low Power Safety Injection Loop 3 Header Stop Valve Failed to Operate as Required.Caused by Broken Weld in Coupling of Operating Extension Shaft | |
| 05000309/LER-1980-012, Forwards LER 80-012/03L-0 | Forwards LER 80-012/03L-0 | |
| 05000309/LER-1980-013-03, /03L-0:on 800507,during Routine Power Operation, Auxiliary Operator Noticed S-charging Pump Was Not Lined Up W/Required Degree of Separation.Caused by Personnel Error. Surveillance Test Procedure Revised | /03L-0:on 800507,during Routine Power Operation, Auxiliary Operator Noticed S-charging Pump Was Not Lined Up W/Required Degree of Separation.Caused by Personnel Error. Surveillance Test Procedure Revised | |
| 05000309/LER-1980-013, Forwards LER 80-013/03L-0 | Forwards LER 80-013/03L-0 | |
| 05000309/LER-1980-014-01, /01X-1:on 800604,analysis of Reactor Vessel Wall Surveillance Capsule Indicated Higher Shift of RTNDT than Predicted.Caused by Calculation Programs &/Or Errors in Methodology.Preparation of Tech Specs Amend Underway | /01X-1:on 800604,analysis of Reactor Vessel Wall Surveillance Capsule Indicated Higher Shift of RTNDT than Predicted.Caused by Calculation Programs &/Or Errors in Methodology.Preparation of Tech Specs Amend Underway | |
| 05000309/LER-1980-014, Forwards LER 80-014/01X-1 | Forwards LER 80-014/01X-1 | |
| 05000309/LER-1980-015-01, /01T-0:on 800625,analysis Performed for Cycle 5 Did Not Consider four-step,long-term Insertion Allowed by Tech Spec.Reanalysis Completed.Tech Spec Change Will Be Submitted | /01T-0:on 800625,analysis Performed for Cycle 5 Did Not Consider four-step,long-term Insertion Allowed by Tech Spec.Reanalysis Completed.Tech Spec Change Will Be Submitted | |
| 05000309/LER-1980-015, Forwards LER 80-015/01T-0 | Forwards LER 80-015/01T-0 | |
| 05000309/LER-1980-016-03, /03L-0:on 800602,during Startup at 15% Power,Steam Generator 1 Outlet Steam Pressure Found Higher than Other Two Pressures.Caused by Matl Failure in Heat Affected Zone of Guide to Disc Weld.Pieces Welded | /03L-0:on 800602,during Startup at 15% Power,Steam Generator 1 Outlet Steam Pressure Found Higher than Other Two Pressures.Caused by Matl Failure in Heat Affected Zone of Guide to Disc Weld.Pieces Welded | |
| 05000309/LER-1980-016, Forwards LER 80-016/03L-0 | Forwards LER 80-016/03L-0 | |
| 05000309/LER-1980-017-01, /01T-1:on 800822,during Steady State power,25,000 Gallon Blended Makeup Made to Rwst.Boron Sample Indicated Concentration of 1,704 ppm;16 Ppm Below Tech Spec Required Value of 1,720 Ppm.Caused by Insufficient Sample | /01T-1:on 800822,during Steady State power,25,000 Gallon Blended Makeup Made to Rwst.Boron Sample Indicated Concentration of 1,704 ppm;16 Ppm Below Tech Spec Required Value of 1,720 Ppm.Caused by Insufficient Sample | |
| 05000309/LER-1980-017, Forwards LER 80-017/03L-0 | Forwards LER 80-017/03L-0 | |
| 05000309/LER-1980-017-03, /03L-0:on 800822,boron Sample Taken at Completion of Addition to RWST Indicated Concentration Below Tech Spec Limit.Caused by Failure of Technician to Obtain Sufficient Sample Prior to Addition | /03L-0:on 800822,boron Sample Taken at Completion of Addition to RWST Indicated Concentration Below Tech Spec Limit.Caused by Failure of Technician to Obtain Sufficient Sample Prior to Addition | |
| 05000309/LER-1980-018-03, /03L-0:on 800826,during Steady State Power Operation,W/Diesel generator,DG-1B,being Operated in Surveillance mode,DG-1B Auto Tripped on Overspeed.Caused by Loose Overspeed Trip Switch Actuating Arm.Arm Tightened | /03L-0:on 800826,during Steady State Power Operation,W/Diesel generator,DG-1B,being Operated in Surveillance mode,DG-1B Auto Tripped on Overspeed.Caused by Loose Overspeed Trip Switch Actuating Arm.Arm Tightened | |
| 05000309/LER-1980-018, Forwards LER 80-018/03L-0 | Forwards LER 80-018/03L-0 | |
| 05000309/LER-1980-019-03, /03L-0:on 801202,during Routine Surveillance on Reactor Protection Sys,Channel C Positive Symmetric Offset Pretrip Function Discovered Not Available.Caused by Failed Comparator Module.Spare Unit Installed & Returned to Svc | /03L-0:on 801202,during Routine Surveillance on Reactor Protection Sys,Channel C Positive Symmetric Offset Pretrip Function Discovered Not Available.Caused by Failed Comparator Module.Spare Unit Installed & Returned to Svc | |
| 05000309/LER-1980-019, Forwards LER 80-019/03L-0 | Forwards LER 80-019/03L-0 | |