| | | Reporting criterion |
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| 05000339/LER-1981-001, Forwards LER 81-001/03L-0 | Forwards LER 81-001/03L-0 | |
| 05000339/LER-1981-001-03, /03L-0:on 810101,average RCS Temp Outside Tech Specs on Two Occasions.First Caused by Vol Control Tank Being Overborated;Second by Overcooling Primary.Steam Generator Blowdown Secured,Rods Withdrawn & RCS Diluted | /03L-0:on 810101,average RCS Temp Outside Tech Specs on Two Occasions.First Caused by Vol Control Tank Being Overborated;Second by Overcooling Primary.Steam Generator Blowdown Secured,Rods Withdrawn & RCS Diluted | |
| 05000338/LER-1981-001, Forwards LER 81-001/03L-0 | Forwards LER 81-001/03L-0 | |
| 05000338/LER-1981-001-03, /03L:on 810318 & 19,nitrogen Supply Tank Pressure for Associated Pressure Operated Relief Valves Dropped Below Min Required to Operate Valves for Low Temp RCS Overpressurization Protection.Caused by Leaks in Tanks | /03L:on 810318 & 19,nitrogen Supply Tank Pressure for Associated Pressure Operated Relief Valves Dropped Below Min Required to Operate Valves for Low Temp RCS Overpressurization Protection.Caused by Leaks in Tanks | |
| 05000338/LER-1981-002, Forwards LER 81-002/03L-0 | Forwards LER 81-002/03L-0 | |
| 05000338/LER-1981-002-03, /03L-0:on 801231,pressurizer Power Operated Relief Valve Declared Inoperable Because of Low Nitrogen Gas Supply Tank Pressure in 1-GN-TK-1A.Caused by Excessive Usage of Nitrogen to Cycle Relief Valves to Reduce RCS Pressure | /03L-0:on 801231,pressurizer Power Operated Relief Valve Declared Inoperable Because of Low Nitrogen Gas Supply Tank Pressure in 1-GN-TK-1A.Caused by Excessive Usage of Nitrogen to Cycle Relief Valves to Reduce RCS Pressure | |
| 05000339/LER-1981-002, Forwards LER 81-002/03L-0 | Forwards LER 81-002/03L-0 | |
| 05000339/LER-1981-002-03, /03L-0:on 801230,w/unit in Mode 1,steam Flow Channel III Became Erratic W/O Any Annunciators or Computer Alarms.Cause Unknown.Channel Placed in Trip Condition, Calibr & Returned to Svc | /03L-0:on 801230,w/unit in Mode 1,steam Flow Channel III Became Erratic W/O Any Annunciators or Computer Alarms.Cause Unknown.Channel Placed in Trip Condition, Calibr & Returned to Svc | |
| 05000338/LER-1981-003-03, /03L-0:on 810104,loop 3 Reactor Coolant Flow Protection Channel II,F-1435,found Out of Tolerance High. Caused by Voltage Drift in Flow Transmitter Serving Loop. Channel Recalibr | /03L-0:on 810104,loop 3 Reactor Coolant Flow Protection Channel II,F-1435,found Out of Tolerance High. Caused by Voltage Drift in Flow Transmitter Serving Loop. Channel Recalibr | |
| 05000338/LER-1981-003, Forwards LER 81-003/03L-0 | Forwards LER 81-003/03L-0 | |
| 05000339/LER-1981-003, Forwards LER 81-003/03L-0 | Forwards LER 81-003/03L-0 | |
| 05000339/LER-1981-003-03, /03L-0:on 810104,casing Cool Tank Level Indication LI-RS-203B Failed High.Caused by Frozen Transmitter Due to Heat Tracing Failure.Transmitter Was Thawed Out & Redundant Heat Tracing Turned on | /03L-0:on 810104,casing Cool Tank Level Indication LI-RS-203B Failed High.Caused by Frozen Transmitter Due to Heat Tracing Failure.Transmitter Was Thawed Out & Redundant Heat Tracing Turned on | |
| 05000338/LER-1981-004, Forwards LER 81-004/03L-0 | Forwards LER 81-004/03L-0 | |
| 05000338/LER-1981-004-03, /03L-0:on 801229,three Motor Operated Valves Failed to Actuate During Containment Depressurization Actuation Functional Test.Caused by Loose Lead on Breaker/ Controller & Water in Motor.Valves Repaired | /03L-0:on 801229,three Motor Operated Valves Failed to Actuate During Containment Depressurization Actuation Functional Test.Caused by Loose Lead on Breaker/ Controller & Water in Motor.Valves Repaired | |
| 05000339/LER-1981-004, Forwards LER 81-004/03L-0 | Forwards LER 81-004/03L-0 | |
| 05000339/LER-1981-004-03, /03L-0:on 810104,during Mode 1 Operation,Flux Penalty Summing Amplifier Found Failed During Loop Calibr Check.Caused by Faulty NSA Card.Card Replaced & Calibr | /03L-0:on 810104,during Mode 1 Operation,Flux Penalty Summing Amplifier Found Failed During Loop Calibr Check.Caused by Faulty NSA Card.Card Replaced & Calibr | |
| 05000338/LER-1981-005-03, /03L-0:on 810105,discovered That Control Room Floor Sleeve 1FC00108 Was Never Resealed After Being Previously Breached for Cable Installation.Caused by Failure of Personnel to Follow Procedures.Sleeve Resealed | /03L-0:on 810105,discovered That Control Room Floor Sleeve 1FC00108 Was Never Resealed After Being Previously Breached for Cable Installation.Caused by Failure of Personnel to Follow Procedures.Sleeve Resealed | |
| 05000338/LER-1981-005, Forwards LER 81-005/03L-0 | Forwards LER 81-005/03L-0 | |
| 05000339/LER-1981-005, Forwards LER 81-005/03L-0 | Forwards LER 81-005/03L-0 | |
| 05000339/LER-1981-005-03, /03L-0:on 810106,greater than 12-step Disagreement Noted Between Individual Rod Position for Rod B08 in Control Bank D & Group Demand Position.Caused by Voltage Drift in Signal Conditioning Card.Indicator Channel Recalibr | /03L-0:on 810106,greater than 12-step Disagreement Noted Between Individual Rod Position for Rod B08 in Control Bank D & Group Demand Position.Caused by Voltage Drift in Signal Conditioning Card.Indicator Channel Recalibr | |
| 05000338/LER-1981-006, Forwards LER 81-006/03L-0 | Forwards LER 81-006/03L-0 | |
| 05000338/LER-1981-006-03, /03L-0:on 810113,pressurizer Pressure Transmitter PT 1457 Found Out of Calibr.Caused by Instrument Drift. Channel Recalibr | /03L-0:on 810113,pressurizer Pressure Transmitter PT 1457 Found Out of Calibr.Caused by Instrument Drift. Channel Recalibr | |
| 05000339/LER-1981-006-03, /03L-0:on 810107,w/unit at 1% Power,Average RCS Temp Less than 541 F on Two Occasions.Caused by Overfeeding Steam Generators Due to Feedwater Control Problems.Condenser Steam Dumps Closed & Reactor Temp Increased | /03L-0:on 810107,w/unit at 1% Power,Average RCS Temp Less than 541 F on Two Occasions.Caused by Overfeeding Steam Generators Due to Feedwater Control Problems.Condenser Steam Dumps Closed & Reactor Temp Increased | |
| 05000338/LER-1981-007-99, Plug Found Missing from Tube at Row 1,column 12.On 810202,two More Plugs Found Missing.Caused by Bad Seals.One Tube Was Replugged on 810124.Other Two Tubes Replugged on 810303 | Plug Found Missing from Tube at Row 1,column 12.On 810202,two More Plugs Found Missing.Caused by Bad Seals.One Tube Was Replugged on 810124.Other Two Tubes Replugged on 810303 | |
| 05000339/LER-1981-007, Forwards LER 81-007/03L-0 | Forwards LER 81-007/03L-0 | |
| 05000339/LER-1981-007-03, /03L-0:on 801230,boron Concentration in Boron Acid Storage Tank C & Boron Injection Tank Below Tech Spec. Probably Caused by Inleakage of Unknown Source.Boric Acid Transferred to Tank C.Investigation of Leak Underway | /03L-0:on 801230,boron Concentration in Boron Acid Storage Tank C & Boron Injection Tank Below Tech Spec. Probably Caused by Inleakage of Unknown Source.Boric Acid Transferred to Tank C.Investigation of Leak Underway | |
| 05000338/LER-1981-007, Forwards Updated LER 81-007/99X-1 | Forwards Updated LER 81-007/99X-1 | |
| 05000339/LER-1981-008, Forwards LER 81-008/03L-0 | Forwards LER 81-008/03L-0 | |
| 05000338/LER-1981-008-03, /03L-0:on 810117,steam Generator a Protection Channel 2 Narrow Range Level Transmitter LT-1475 Found Out of Calibr.Caused by Voltage Drift in Level Transmitter Serving Instrument Loop.Recalibr & Returned to Svc | /03L-0:on 810117,steam Generator a Protection Channel 2 Narrow Range Level Transmitter LT-1475 Found Out of Calibr.Caused by Voltage Drift in Level Transmitter Serving Instrument Loop.Recalibr & Returned to Svc | |
| 05000338/LER-1981-008, Forwards LER 81-008/03L-0 | Forwards LER 81-008/03L-0 | |
| 05000339/LER-1981-008-03, /03L-0:on 810107,primary Coolant Iodine Isotopic Analysis Not Made within 2-6 Hour Per Tech Spec Re Power Changes Exceeding 15% Per Hour.Caused by Failure of Operations Personnel to Follow Procedures.Sample Analyzed | /03L-0:on 810107,primary Coolant Iodine Isotopic Analysis Not Made within 2-6 Hour Per Tech Spec Re Power Changes Exceeding 15% Per Hour.Caused by Failure of Operations Personnel to Follow Procedures.Sample Analyzed | |
| 05000339/LER-1981-009, Forwards LER 81-009/03L-0 | Forwards LER 81-009/03L-0 | |
| 05000339/LER-1981-009-03, /03L-0:on 810107,during Leak Test Containment Personnel Hatch Outer Door Leaked Air Past Seals.Caused by Improper Fitup of Door Seals to Frame.Door Adjusted | /03L-0:on 810107,during Leak Test Containment Personnel Hatch Outer Door Leaked Air Past Seals.Caused by Improper Fitup of Door Seals to Frame.Door Adjusted | |
| 05000338/LER-1981-009-03, Combined Leakage in Excess of Allowable Limits Noted from 14 Electrical Penetrations & 23 Valves.Valve Leakage Caused by Valve Seat Deterioration or Limit Switch Drift | Combined Leakage in Excess of Allowable Limits Noted from 14 Electrical Penetrations & 23 Valves.Valve Leakage Caused by Valve Seat Deterioration or Limit Switch Drift | |
| 05000338/LER-1981-009, Forwards Updated LER 81-009/03X-1 | Forwards Updated LER 81-009/03X-1 | |
| 05000338/LER-1981-010, Forwards LER 81-010/03L-0 | Forwards LER 81-010/03L-0 | |
| 05000338/LER-1981-010-03, /03L-0:on 810211,w/unit in Mode 6,containment Purge & Exhaust Isolation Sys Was Rendered Inoperable When Power to MOV-HV-100B,D Was Lost.Caused by Fault on High Resistance Connection.Defective Parts Replaced | /03L-0:on 810211,w/unit in Mode 6,containment Purge & Exhaust Isolation Sys Was Rendered Inoperable When Power to MOV-HV-100B,D Was Lost.Caused by Fault on High Resistance Connection.Defective Parts Replaced | |
| 05000339/LER-1981-010, Forwards LER 81-010/03L-0 | Forwards LER 81-010/03L-0 | |
| 05000339/LER-1981-010-03, /03L-0:on 810113,w/unit at 100% Power,Overspeed Trip of Turbine Driven Auxiliary Feedwater Pump Occurred During Surveillance Testing.Caused by Failure of Turbine Governor to Control Speed.Governor Was Replaced | /03L-0:on 810113,w/unit at 100% Power,Overspeed Trip of Turbine Driven Auxiliary Feedwater Pump Occurred During Surveillance Testing.Caused by Failure of Turbine Governor to Control Speed.Governor Was Replaced | |
| 05000338/LER-1981-011-03, /03L-0:on 810117,w/unit in Mode 6,loss of Power to Radiation Monitor Common Alarms Panel Was Experienced for Less than 5 Minutes.Caused by Failure of Electrician to Switch Power to Unit 2 During Unit 1 Trip | /03L-0:on 810117,w/unit in Mode 6,loss of Power to Radiation Monitor Common Alarms Panel Was Experienced for Less than 5 Minutes.Caused by Failure of Electrician to Switch Power to Unit 2 During Unit 1 Trip | |
| 05000338/LER-1981-011, Forwards LER 81-011/03L-0 | Forwards LER 81-011/03L-0 | |
| 05000339/LER-1981-011-03, /03L-0:on 810114,w/unit at 100% Power,Breaker for 2-QS-P-1A Spray Pump Racked Out & Suction Valve MOV-QS-200A Closed & de-energized.Caused by Dirty Seat on Vent Valve. Valve Seat Cleaned & Disc Lapped | /03L-0:on 810114,w/unit at 100% Power,Breaker for 2-QS-P-1A Spray Pump Racked Out & Suction Valve MOV-QS-200A Closed & de-energized.Caused by Dirty Seat on Vent Valve. Valve Seat Cleaned & Disc Lapped | |
| 05000339/LER-1981-011, Forwards LER 81-011/03L-0 | Forwards LER 81-011/03L-0 | |
| 05000338/LER-1981-012-03, /03L-0:on 810118,fuel Bldg Supply & Exhaust Fan Suction Dampers Switched to Failed Position,Bypassing Iodine Filter Bank When Control Bank Was Isolated.Caused by Low Outdoor Temp.Dampers Positioned to Exhaust Through Filter | /03L-0:on 810118,fuel Bldg Supply & Exhaust Fan Suction Dampers Switched to Failed Position,Bypassing Iodine Filter Bank When Control Bank Was Isolated.Caused by Low Outdoor Temp.Dampers Positioned to Exhaust Through Filter | |
| 05000338/LER-1981-012, Forwards LER 81-012/03L-0 | Forwards LER 81-012/03L-0 | |
| 05000339/LER-1981-012-03, /03L-0:on 810121,containment Pressure Protection Channel 3 Failed Low.Caused by Blown Transistor on Loop Power Supply Card,Resulting in Power Loss to Each Comparator in Loop.Failed Card Replaced W/Calibr Card | /03L-0:on 810121,containment Pressure Protection Channel 3 Failed Low.Caused by Blown Transistor on Loop Power Supply Card,Resulting in Power Loss to Each Comparator in Loop.Failed Card Replaced W/Calibr Card | |
| 05000339/LER-1981-012, Forwards LER 81-012/03L-0 | Forwards LER 81-012/03L-0 | |
| 05000339/LER-1981-013-03, /03L-0:on 810126,containment Hi & hi-hi Pressure Channel III Annunciator Energized.Caused by Instrument Drift in Nonisolated Power Supply Card S/N 5088,increasing Output Voltage.Card Replaced & Channel Calibr | /03L-0:on 810126,containment Hi & hi-hi Pressure Channel III Annunciator Energized.Caused by Instrument Drift in Nonisolated Power Supply Card S/N 5088,increasing Output Voltage.Card Replaced & Channel Calibr | |
| 05000338/LER-1981-013, Forwards LER 81-013/03L-0 | Forwards LER 81-013/03L-0 | |
| 05000339/LER-1981-013, Forwards LER 81-013/03L-0 | Forwards LER 81-013/03L-0 | |