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| 05000320/LER-1978-001-03, /03L-0 on 780208:reactor Bldg Purge Supply Fans & Associated Purge Recirculation Damper Sys Were Inoperable. Caused by Incomplete Const | /03L-0 on 780208:reactor Bldg Purge Supply Fans & Associated Purge Recirculation Damper Sys Were Inoperable. Caused by Incomplete Const | |
| 05000320/LER-1978-001, Forwards LER 78-001/03L-0 | Forwards LER 78-001/03L-0 | |
| 05000312/LER-1978-001-01, /01T-0:on 780320,non-nuclear Instrumentation Dc Power Short Resulted in Reactor Trip & RCS Cooldown in Excess of Tech Spec Figure 3.1.2-2 Limits.Caused by Operator Changing Lightbulb.Conditions Imposed for Return to Power | /01T-0:on 780320,non-nuclear Instrumentation Dc Power Short Resulted in Reactor Trip & RCS Cooldown in Excess of Tech Spec Figure 3.1.2-2 Limits.Caused by Operator Changing Lightbulb.Conditions Imposed for Return to Power | |
| 05000289/LER-1978-001-01, /01T-0:on 780106,B&W Informed Util That During Certain Plant Transients,Difference Between Reactor Power as Indicated by out-of-core Instrumentation & as Calculated by Heat Balance May Exceed 4% of Full Power | /01T-0:on 780106,B&W Informed Util That During Certain Plant Transients,Difference Between Reactor Power as Indicated by out-of-core Instrumentation & as Calculated by Heat Balance May Exceed 4% of Full Power | |
| 05000289/LER-1978-001, Forwards LER 78-001/01T-0 | Forwards LER 78-001/01T-0 | |
| 05000320/LER-1978-002, Forwards LER 78-002/03L-0 | Forwards LER 78-002/03L-0 | |
| 05000320/LER-1978-002-03, /03L-0 on 780208:prior to Initial Refueling,Defect Found in Plate 6 of Seismic Instrumentation Triaxial Response Spectrum Recorder 714.Caused by Mfg Error | /03L-0 on 780208:prior to Initial Refueling,Defect Found in Plate 6 of Seismic Instrumentation Triaxial Response Spectrum Recorder 714.Caused by Mfg Error | |
| 05000289/LER-1978-002-01, /01T-0:on 780112,valve FS-V156 Closed to Modify Sprinkler Sys Piping to B Emergency Diesel Radiator Room & Continuous Fire Watch Not Established for 24-h.Caused by Personnel Error.Fire Protection Tech Specs to Be Reviewed | /01T-0:on 780112,valve FS-V156 Closed to Modify Sprinkler Sys Piping to B Emergency Diesel Radiator Room & Continuous Fire Watch Not Established for 24-h.Caused by Personnel Error.Fire Protection Tech Specs to Be Reviewed | |
| 05000289/LER-1978-002, Forwards LER 78-002/01T-0 | Forwards LER 78-002/01T-0 | |
| 05000320/LER-1978-003, Forwards LER 78-003/01T-0 | Forwards LER 78-003/01T-0 | |
| 05000320/LER-1978-003-01, /01T-0 on 780213:while in Mode 6,continuous Fire Watch Not Established When Cable Room Halon Sys Automatic Actuation Sys Was Inoperable.Caused by Misunderstanding | /01T-0 on 780213:while in Mode 6,continuous Fire Watch Not Established When Cable Room Halon Sys Automatic Actuation Sys Was Inoperable.Caused by Misunderstanding | |
| 05000289/LER-1978-003, Forwards LER 78-003/03L-0 | Forwards LER 78-003/03L-0 | |
| 05000289/LER-1978-003-03, /03L-0:on 780112,emergency Diesel Generator 1B Failed to Start on Simulated Test Signal During Procedure SP1305-5.2.Caused by Drifting Oil Pressure Limit Switch. Setting Adjusted,New Limit Switch Ordered | /03L-0:on 780112,emergency Diesel Generator 1B Failed to Start on Simulated Test Signal During Procedure SP1305-5.2.Caused by Drifting Oil Pressure Limit Switch. Setting Adjusted,New Limit Switch Ordered | |
| 05000320/LER-1978-004, Forwards LER 78-004/01T-0 | Forwards LER 78-004/01T-0 | |
| 05000320/LER-1978-004-01, /01T-0:on 780214,after Initial Fueling,Two Fuel Assemblies Were Loaded Into Reactor Vessel W/O Having Source Range Audible Counts in Containment Bldg | /01T-0:on 780214,after Initial Fueling,Two Fuel Assemblies Were Loaded Into Reactor Vessel W/O Having Source Range Audible Counts in Containment Bldg | |
| 05000289/LER-1978-004-03, /03L-0:on 780117,while Closing Valve MU-V74A,22 Gallon Per Minute Packing Gland Leak Developed.Caused by Worn Packing in Valve.Valve Placed on Backseat.Packing Replaced 780118 | /03L-0:on 780117,while Closing Valve MU-V74A,22 Gallon Per Minute Packing Gland Leak Developed.Caused by Worn Packing in Valve.Valve Placed on Backseat.Packing Replaced 780118 | |
| 05000289/LER-1978-004, Forwards LER 78-004/03L-0 | Forwards LER 78-004/03L-0 | |
| 05000320/LER-1978-005-99, /99T-0 on 780208:during Surveillance of Dike,Noted That Area of Rock rip-rap Had Slid 15 Feet Down Slope.Caused by Ratio of incline.Rip-rap Repositioned | /99T-0 on 780208:during Surveillance of Dike,Noted That Area of Rock rip-rap Had Slid 15 Feet Down Slope.Caused by Ratio of incline.Rip-rap Repositioned | |
| 05000320/LER-1978-005, Forwards LER 78-05l/01T | Forwards LER 78-05l/01T | |
| 05000289/LER-1978-005-01, /01T-0:on 780119,Plant Operation Review Committee Found Containment Integrity Violated by Opening Valves BS-V47A & B During Pump Operability Test.Caused by Error in Operating Procedure OP 1104-5.Procedure to Be Revised | /01T-0:on 780119,Plant Operation Review Committee Found Containment Integrity Violated by Opening Valves BS-V47A & B During Pump Operability Test.Caused by Error in Operating Procedure OP 1104-5.Procedure to Be Revised | |
| 05000289/LER-1978-005, Forwards LER 78-005/01T-0 | Forwards LER 78-005/01T-0 | |
| 05000320/LER-1978-006-01, /01T-0 on 780217:core Alterations Made When Containment Integrity Had Been Broken & During Break in Communications W/Control Room | /01T-0 on 780217:core Alterations Made When Containment Integrity Had Been Broken & During Break in Communications W/Control Room | |
| 05000320/LER-1978-006, Forwards LER 78-006/01T-0 | Forwards LER 78-006/01T-0 | |
| 05000289/LER-1978-006-03, /03L-0:on 780124,during Normal Operation,Reactor Coolant Sample Isolation Valve CA-V13 Failed to Close When Actuated by Remote Signal.Caused by Valve Stem Thread Wear. Containment Isolation Valve CA-V2 Closed | /03L-0:on 780124,during Normal Operation,Reactor Coolant Sample Isolation Valve CA-V13 Failed to Close When Actuated by Remote Signal.Caused by Valve Stem Thread Wear. Containment Isolation Valve CA-V2 Closed | |
| 05000289/LER-1978-006, Forwards LER 78-006/03L-0 | Forwards LER 78-006/03L-0 | |
| 05000320/LER-1978-007, Forwards LER 78-007/03L-0 | Forwards LER 78-007/03L-0 | |
| 05000320/LER-1978-007-03, /03L-0 on 780216:diesel Generator DF-X-1B Tripped. Caused by Spurious Actuation of Reverse Power Relay.Relay Reset & Surveillance Test on Diesel Generator Rerun | /03L-0 on 780216:diesel Generator DF-X-1B Tripped. Caused by Spurious Actuation of Reverse Power Relay.Relay Reset & Surveillance Test on Diesel Generator Rerun | |
| 05000289/LER-1978-007, Forwards LER 78-007/03L-0 | Forwards LER 78-007/03L-0 | |
| 05000289/LER-1978-007-03, /03L-0:on 780128,while at 50% of Full Power,Incore Quadrant Power Tilt Limit Exceeded.Transient Caused by Transient Power Operations & Maneuvering to all-rods-out Configuration.Xenon Burned Out & Tilt Returned to Limits | /03L-0:on 780128,while at 50% of Full Power,Incore Quadrant Power Tilt Limit Exceeded.Transient Caused by Transient Power Operations & Maneuvering to all-rods-out Configuration.Xenon Burned Out & Tilt Returned to Limits | |
| 05000289/LER-1978-008, Forwards LER 78-008/01T-0 | Forwards LER 78-008/01T-0 | |
| 05000289/LER-1978-008-01, /01T-0:on 780202,once-through Steam Generator Feedwater Nozzles Flooded During Operation Below 5% Full Power.Caused by Incorrect Procedure Due to Operating Inexperience.Shutdown & Cooldown Procedures Revised | /01T-0:on 780202,once-through Steam Generator Feedwater Nozzles Flooded During Operation Below 5% Full Power.Caused by Incorrect Procedure Due to Operating Inexperience.Shutdown & Cooldown Procedures Revised | |
| 05000320/LER-1978-008-03, /03L-0 on 780224:during Final Turnover Insp Three Fire Penetration Seals Found Not Functional.Caused by Seals Being Breached During Const.Fire Watch Was Posted | /03L-0 on 780224:during Final Turnover Insp Three Fire Penetration Seals Found Not Functional.Caused by Seals Being Breached During Const.Fire Watch Was Posted | |
| 05000320/LER-1978-008, Forwards LER 78-008/03L-0 | Forwards LER 78-008/03L-0 | |
| 05000289/LER-1978-009-03, /03L-0 on 780315:dc Breaker CB3 Failed to Trip on One of Several Tests.Caused by Apparent Binding of Breaker Operating Linkage.Binding May Have Been Due to Insufficient Exercise of Breaker &/Or Lack of Maint | /03L-0 on 780315:dc Breaker CB3 Failed to Trip on One of Several Tests.Caused by Apparent Binding of Breaker Operating Linkage.Binding May Have Been Due to Insufficient Exercise of Breaker &/Or Lack of Maint | |
| 05000320/LER-1978-009-03, /03L-0 on 780302:surveillance Requirements Re Control Rod Drive Mechanism Not Met.Failed to Realize Specific Submode Had Been Entered | /03L-0 on 780302:surveillance Requirements Re Control Rod Drive Mechanism Not Met.Failed to Realize Specific Submode Had Been Entered | |
| 05000320/LER-1978-009, Forwards LER 78-009/03L-0 | Forwards LER 78-009/03L-0 | |
| 05000289/LER-1978-009, Forwards LER 78-009/03L-0 | Forwards LER 78-009/03L-0 | |
| 05000320/LER-1978-010-03, /03L-0 on 780307:river Water Pump Outlet & Prelube Valves & Redundant RCP Seal Injection Valves Not Functionally Tested Before Being Placed in Svc | /03L-0 on 780307:river Water Pump Outlet & Prelube Valves & Redundant RCP Seal Injection Valves Not Functionally Tested Before Being Placed in Svc | |
| 05000320/LER-1978-010, Forwards LER 78-010/03L-0 | Forwards LER 78-010/03L-0 | |
| 05000289/LER-1978-010, Forwards LER 78-010/01T-0 | Forwards LER 78-010/01T-0 | |
| 05000289/LER-1978-010-01, /01T-0:on 780318,during Emergency Sequence & Power Transfer test,1A & 1C Makeup Pumps Tripped When Transferring to Onsite Source Due to Malfunctioning Time Delay Relay & Diesel Generators Failed to Start Due to Pressure Swit | /01T-0:on 780318,during Emergency Sequence & Power Transfer test,1A & 1C Makeup Pumps Tripped When Transferring to Onsite Source Due to Malfunctioning Time Delay Relay & Diesel Generators Failed to Start Due to Pressure Switches | |
| 05000289/LER-1978-011-03, /03L-0:on 780318,snubber MS-201 Found W/No Fluid in Reservoir.Caused by Pinched Rod Wiper Seal | /03L-0:on 780318,snubber MS-201 Found W/No Fluid in Reservoir.Caused by Pinched Rod Wiper Seal | |
| 05000320/LER-1978-011-03, /03L-0 on 780311:entered Mode 4 W/O Establishing Containment Integrity & Surveillance on Bldg Door Not Performed.Door Failure Caused by Damaged O Ring Seals | /03L-0 on 780311:entered Mode 4 W/O Establishing Containment Integrity & Surveillance on Bldg Door Not Performed.Door Failure Caused by Damaged O Ring Seals | |
| 05000320/LER-1978-011, Forwards LER 78-011/03L-0 | Forwards LER 78-011/03L-0 | |
| 05000289/LER-1978-011, Forwards LER 78-011/03L-0 | Forwards LER 78-011/03L-0 | |
| 05000320/LER-1978-012, Forwards LER 78-012/03L-0 | Forwards LER 78-012/03L-0 | |
| 05000289/LER-1978-012-03, /03L-0:on 780406,during Functional Tests,One Snubber DHH-187 Would Not Lock Up Upon Compression.Cause Undetermined.Valve Block Replaced & Satisfactory Test Made | /03L-0:on 780406,during Functional Tests,One Snubber DHH-187 Would Not Lock Up Upon Compression.Cause Undetermined.Valve Block Replaced & Satisfactory Test Made | |
| 05000289/LER-1978-012, Forwards LER 78-012/03L-0 | Forwards LER 78-012/03L-0 | |
| 05000320/LER-1978-012-03, /03L-0:on 780314,Unit 2 Entered Mode 4 with Only One Operable Bldg Spray Sys.Caused by Clerical Error | /03L-0:on 780314,Unit 2 Entered Mode 4 with Only One Operable Bldg Spray Sys.Caused by Clerical Error | |
| 05000289/LER-1978-013-01, /01T-0:on 780413,B&W Informed Util That Small Break on Reactor Coolant Pump Discharge Had Not Been Analyzed in Fsar.Procedures to Be Revised & Operators to Be Trained in Response to Small Break LOCA | /01T-0:on 780413,B&W Informed Util That Small Break on Reactor Coolant Pump Discharge Had Not Been Analyzed in Fsar.Procedures to Be Revised & Operators to Be Trained in Response to Small Break LOCA | |
