| | Site | Start date | Title |
|---|
| 05000397/LER-1995-007, :on 950222,emergency Diesel Start Occurred Due to Voltage Transient on BPA Grid.Confirmation Was Received at 17:51 H That Disturbance Had Originated in BPA Grid | Columbia | 5 May 1995 |
- on 950222,emergency Diesel Start Occurred Due to Voltage Transient on BPA Grid.Confirmation Was Received at 17:51 H That Disturbance Had Originated in BPA Grid
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| 05000397/LER-1991-017, :on 910708,EDGs Automatically Started While on Backfeed Due to Undervoltage Condition,Initiated by 500 Kv Grid Disturbance.Caused by Personnel Error.Returned Unit to Startup Power Source | Columbia | 9 June 1993 |
- on 910708,EDGs Automatically Started While on Backfeed Due to Undervoltage Condition,Initiated by 500 Kv Grid Disturbance.Caused by Personnel Error.Returned Unit to Startup Power Source
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| 05000397/LER-1993-019, :on 930510,ESF Isolations & Actuations Occurred Due to 500 Kv Load Break Disconnect Failure. RHR Loop a Shutdown Cooling Restored & Plant Sys Returned to Normal Lineup Status | Columbia | 9 June 1993 |
- on 930510,ESF Isolations & Actuations Occurred Due to 500 Kv Load Break Disconnect Failure. RHR Loop a Shutdown Cooling Restored & Plant Sys Returned to Normal Lineup Status
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| 05000397/LER-1988-013-01, :on 880512 & 13,loss of Power Occurred on Reactor Protection Sys (Rps).Caused by phase-to-ground Faults Due to Lightning.Rps Alternate Supply Electrical Protection Assembly Breaker & Logic Reset | Columbia | 13 June 1988 |
- on 880512 & 13,loss of Power Occurred on Reactor Protection Sys (Rps).Caused by phase-to-ground Faults Due to Lightning.Rps Alternate Supply Electrical Protection Assembly Breaker & Logic Reset
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| 05000397/LER-1987-018, :on 870626,reactor Automatically Scrammed by Reactor Protection Sys Actuation Due to Normal Auxiliary Power Transformer Sudden Pressure Relay Actuation.Caused by Opening of Test Valve.Transformers Inspected | Columbia | 27 July 1987 |
- on 870626,reactor Automatically Scrammed by Reactor Protection Sys Actuation Due to Normal Auxiliary Power Transformer Sudden Pressure Relay Actuation.Caused by Opening of Test Valve.Transformers Inspected
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| 05000397/LER-1986-022, :on 860627,during Planned Outage While Electrical Loads Supplied by Offsite Power Source,Standby Diesel Generators Automatically Started.Caused by Momentary Loss of Power from nonplant-related Trip | Columbia | 21 July 1986 |
- on 860627,during Planned Outage While Electrical Loads Supplied by Offsite Power Source,Standby Diesel Generators Automatically Started.Caused by Momentary Loss of Power from nonplant-related Trip
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| 05000397/LER-1985-007, :on 850131,one Generator Primary Protection Lockout Relay,Spuriously Tripped Causing Abnormal Electrical Operations.Caused by 500 Kv Breakers Opening & Causing Overspeed Condition | Columbia | 25 February 1985 |
- on 850131,one Generator Primary Protection Lockout Relay,Spuriously Tripped Causing Abnormal Electrical Operations.Caused by 500 Kv Breakers Opening & Causing Overspeed Condition
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| 05000397/LER-1985-002, :on 850101,lockout Relays 86XU & 86XUOA Tripped Main Generator/Turbine at BPA Substation & Resulted in Reactor Scram.Caused by Failed Potential Transformer | Columbia | 17 January 1985 |
- on 850101,lockout Relays 86XU & 86XUOA Tripped Main Generator/Turbine at BPA Substation & Resulted in Reactor Scram.Caused by Failed Potential Transformer
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| 05000344/LER-1980-017-03, /03L-0:on 800803,during Concrete Core Drilling, Conduit Damaged Which Supplied Power to West Containment Spray Pump Room Fan.Fan Rendered Inoperable.Caused by Core Drilling Crew Error.Certificate of Svc Encl | Trojan | 29 August 1980 | /03L-0:on 800803,during Concrete Core Drilling, Conduit Damaged Which Supplied Power to West Containment Spray Pump Room Fan.Fan Rendered Inoperable.Caused by Core Drilling Crew Error.Certificate of Svc Encl |
| 05000344/LER-1979-013, Forwards Confirmatory Info to NRC 791229 Question 1 Re LER 79-13 Concerning Stresses in Walls Due to Thermal Gradients. Masonry Walls Subj to Thermal Gradient Across Thickness Will Undergo Deformation.Certificate of Svc Encl | Trojan | 18 January 1980 | Forwards Confirmatory Info to NRC 791229 Question 1 Re LER 79-13 Concerning Stresses in Walls Due to Thermal Gradients. Masonry Walls Subj to Thermal Gradient Across Thickness Will Undergo Deformation.Certificate of Svc Encl |