Pages that link to "05000366/LER-1980-001, Forwards LER 80-001/03L-0"
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The following pages link to 05000366/LER-1980-001, Forwards LER 80-001/03L-0:
Displayed 8 items.
- ML19257C014 (redirect page) (← links)
- 05000321/LER-1980-006, Forwards LER 80-006/03L-0 (← links)
- 05000321/LER-1980-004, Forwards LER 80-004/03L-0 (← links)
- 05000321/LER-1980-006-03, /03L-0:on 800113,one Standby Gas Treatment Sys Rendered Inoperable W/Both Units in Power Operation.Unit Not Proven Operable within Required 4-h.Caused by Inability to Prove Filter Train Operable within 4-h (← links)
- 05000321/LER-1980-003, Forwards LER 80-003/03L-0 (← links)
- 05000366/LER-1980-001-03, /03L-0:on 800102,while Performing Narrow Range Torus Water Level Functional Test & Calibr,Level Transmitter 2T48-N021B Found Out of Tolerance.Caused by Range Drift. Transmitter Recalibr & Returned to Svc (← links)
- 05000366/LER-1980-001 (redirect page) (← links)
- 05000366/LER-2012-001 (← links)
- 05000366/LER-2013-001 (← links)
- 05000366/LER-2013-002 (← links)
- 05000366/LER-2013-003 (← links)
- 05000366/LER-2013-004 (← links)
- 05000366/LER-2013-005 (← links)
- 05000366/LER-2016-003 (← links)
- 05000366/LER-2016-002 (← links)
- 05000366/LER-2016-001 (← links)
- 05000366/LER-2015-002 (← links)
- 05000366/LER-2015-001 (← links)
- 05000366/LER-2011-003 (← links)
- 05000366/LER-2011-002 (← links)
- 05000366/LER-2011-001 (← links)
- 05000366/LER-2010-001 (← links)
- 05000366/LER-2009-004 (← links)
- 05000366/LER-2009-003 (← links)
- 05000366/LER-2009-002 (← links)
- 05000366/LER-2009-001 (← links)
- 05000366/LER-2008-001 (← links)
- 05000366/LER-2007-008 (← links)
- 05000366/LER-2007-007 (← links)
- 05000366/LER-2007-006 (← links)
- 05000366/LER-2007-005 (← links)
- 05000366/LER-2007-004 (← links)
- 05000366/LER-2007-003 (← links)
- 05000366/LER-2007-002 (← links)
- 05000366/LER-2007-001 (← links)
- 05000366/LER-2006-003 (← links)
- 05000366/LER-2006-002 (← links)
- 05000366/LER-2006-001 (← links)
- 05000366/LER-2005-003 (← links)
- 05000366/LER-2005-002 (← links)
- 05000366/LER-2005-001 (← links)
- 05000366/LER-2004-003 (← links)
- 05000366/LER-2004-002 (← links)
- 05000366/LER-2004-001 (← links)
- 05000366/LER-2003-002 (← links)
- 05000366/LER-2003-001 (← links)
- 05000366/LER-2002-001 (← links)
- 05000366/LER-2008-005 (← links)
- 05000366/LER-2008-004 (← links)
- 05000366/LER-2008-003 (← links)
- 05000366/LER-2001-003 (← links)
- 05000366/LER-2001-002 (← links)
- 05000366/LER-2001-001 (← links)
- 05000366/LER-2017-004 (← links)
- 05000366/LER-2017-001 (← links)
- 05000366/LER-1982-051, Forwards LER 82-051/03L-0 (← links)
- 05000366/LER-1982-064, Forwards LER 82-064/03L-0 (← links)
- 05000366/LER-1982-059, Forwards LER 82-059/03L-0 (← links)
- 05000366/LER-1982-065, Forwards LER 82-065/03L-0 (← links)
- 05000366/LER-1982-034, Forwards LER 82-034/03L-0 (← links)
- 05000366/LER-1982-060, Forwards LER 82-060/03L-0 (← links)
- 05000366/LER-1982-061, Forwards LER 82-061/03L-0 (← links)
- 05000366/LER-1982-062, Forwards LER 82-062/03L-0 (← links)
- 05000366/LER-1982-056, Forwards LER 82-056/03L-0 (← links)
- 05000366/LER-1982-066, Forwards LER 82-066/01T-0 (← links)
- 05000366/LER-1982-063, Forwards LER 82-063/03L-0 (← links)
- 05000366/LER-1982-058, Forwards LER 82-058/03L-0 (← links)
- 05000366/LER-1982-057, Forwards LER 82-057/03L-0 (← links)
- 05000366/LER-1982-052, Forwards LER 82-052/03L-0 (← links)
- 05000366/LER-1982-047, Forwards LER 82-047/03L-0 (← links)
- 05000366/LER-1982-053, Forwards LER 82-053/03L-0 (← links)
- 05000366/LER-1982-055, Forwards LER 82-055/03L-0 (← links)
- 05000366/LER-1982-054, Forwards LER 82-054/03L-0 (← links)
- 05000366/LER-1982-041, Forwards LER 82-041/03L-0 (← links)
- 05000366/LER-1982-046, Forwards LER 82-046/03L-0 (← links)
- 05000366/LER-1982-049, Forwards LER 82-049/01T-0 (← links)
- 05000366/LER-1982-018, Forwards LER 82-018/03L-0 (← links)
- 05000366/LER-1982-043, Forwards LER 82-043/03L-0 (← links)
- 05000366/LER-1982-038, Forwards LER 82-038/03L-0 (← links)
- 05000366/LER-1982-044, Forwards LER 82-044/03L-0 (← links)
- 05000366/LER-1982-042, Forwards LER 82-042/03L-0 (← links)
- 05000366/LER-1982-050, Forwards LER 82-050/03L-0 (← links)
- 05000366/LER-1982-045, Forwards LER 82-045/03L-0 (← links)
- 05000366/LER-1982-048, Forwards LER 82-048/03L-0 (← links)
- 05000366/LER-1982-040, Forwards LER 82-040/01T-0 (← links)
- 05000366/LER-1982-015, Forwards LER 82-015/03L-0 (← links)
- 05000366/LER-1982-037, Forwards LER 82-037/03L-0 (← links)
- 05000366/LER-1982-111, Forwards LER 82-111/03L-0 (← links)
- 05000366/LER-1982-105, Forwards LER 82-105/03L-0 (← links)
- 05000366/LER-1982-106, Forwards LER 82-106/03L-0 (← links)
- 05000366/LER-1982-107, Forwards LER 82-107/03L-0 (← links)
- 05000366/LER-1982-100, Forwards LER 82-100/03L-0 (← links)
- 05000366/LER-1982-090, Forwards LER 82-090/03L-0 (← links)
- 05000366/LER-1982-091, Forwards LER 82-091/03L-0 (← links)
- 05000366/LER-1982-083, Forwards LER 82-083/03L-0 (← links)
- 05000366/LER-1982-080, Forwards LER 82-080/03L-0 (← links)
- 05000366/LER-1983-002, Forwards LER 83-002/03L-0 (← links)
- 05000366/LER-1982-133, Forwards LER 82-133/03L-0 (← links)
- 05000366/LER-1982-130, Forwards LER 82-130/03L-0 (← links)
- 05000366/LER-1982-140, Forwards LER 82-140/03L-0 (← links)
- 05000366/LER-1982-132, Forwards LER 82-132/03L-0 (← links)
- 05000366/LER-1982-137, Forwards LER 82-137/03L-0 (← links)
- 05000366/LER-1982-109, Forwards LER 82-109/03L-0 (← links)
- 05000366/LER-1982-110, Forwards LER 82-110/03L-0 (← links)
- 05000366/LER-1982-101, Forwards LER 82-101/03L-0 (← links)
- 05000366/LER-1982-094, Forwards LER 82-094/03L-0 (← links)
- 05000366/LER-1982-084, Forwards LER 82-084/03L-0 (← links)
- 05000366/LER-1982-103, Forwards LER 82-103/03L-0 (← links)
- 05000366/LER-1982-095, Forwards LER 82-095/03L-0 (← links)
- 05000366/LER-1982-087, Forwards LER 82-087/03L-0 (← links)
- 05000366/LER-1982-092, Forwards LER 82-092/03L-0 (← links)
- 05000366/LER-1982-077, Forwards LER 82-077/03L-0 (← links)
- 05000366/LER-1982-075, Forwards LER 82-075/03L-0 (← links)
- 05000366/LER-1982-072, Forwards LER 82-072/03L-0 (← links)
- 05000366/LER-1982-074, Forwards LER 82-074/03L-0 (← links)
- 05000366/LER-1982-073, Forwards LER 82-073/03L-0 (← links)
- 05000366/LER-1982-076, Forwards LER 82-076/03L-0 (← links)
- 05000366/LER-1981-112, Forwards LER 81-112/03L-0 (← links)
- 05000366/LER-1981-113, Forwards LER 81-113/03L-0 (← links)
- 05000366/LER-1982-071, Forwards LER 82-071/03L-0 (← links)
- 05000366/LER-1982-070, Forwards LER 82-070/03L-0 (← links)
- 05000366/LER-1982-068, Forwards LER 82-068/03L-0 (← links)
- 05000366/LER-1982-069, Forwards LER 82-069/03L-0 (← links)
- 05000366/LER-1982-067, Forwards LER 82-067/03L-0 (← links)
- 05000366/LER-1982-039, Forwards LER 82-039/03L-0 (← links)
- 05000366/LER-1983-005, Forwards LER 83-005/03L-0 (← links)
- 05000366/LER-1982-138, Forwards LER 82-138/03L-0 (← links)
- 05000366/LER-1983-001, Forwards LER 83-001/03L-0 (← links)
- 05000366/LER-1982-115, Forwards LER 82-115/03L-0 (← links)
- 05000366/LER-1982-128, Forwards LER 82-128/03L-0 (← links)
- 05000366/LER-1982-124, Forwards LER 82-124/03L-0 (← links)
- 05000366/LER-1982-123, Forwards LER 82-123/03L-0 (← links)
- 05000366/LER-1982-125, Forwards LER 82-125/03L-0 (← links)
- 05000366/LER-1982-120, Forwards LER 82-120/03L-0 (← links)
- 05000366/LER-1983-013, Forwards LER 83-013/03L-0 (← links)
- 05000366/LER-1983-014, Forwards LER 83-014/03L-0 (← links)
- 05000366/LER-1982-108, Forwards LER 82-108/03L-0 (← links)
- 05000366/LER-1982-093, Forwards LER 82-093/03L-0 (← links)
- 05000366/LER-1983-008, Forwards LER 83-008/03L-0 (← links)
- 05000366/LER-1981-111, Forwards LER 81-111/03L-0 (← links)
- 05000366/LER-1982-127, Forwards LER 82-127/03L-0 (← links)
- 05000366/LER-1982-118, Forwards LER 82-118/03L-0 (← links)
- 05000366/LER-1982-117, Forwards LER 82-117/03L-0 (← links)
- 05000366/LER-1982-116, Forwards LER 82-116/03L-0 (← links)
- 05000366/LER-1982-114, Forwards LER 82-114/03L-0 (← links)
- 05000366/LER-1982-113, Forwards LER 82-113/03L-0 (← links)
- 05000366/LER-1982-098, Forwards LER 82-098/01T-0 (← links)
- 05000366/LER-1982-082, Forwards LER 82-082/03L-0 (← links)
- 05000366/LER-1983-040, Updated LER 83-040/03X-1:on 830709 & 14,control Rod Drive Low Pressure or High Level Alarm Received for HCV 2C11-26-31 & 02-29.Caused by Leaking EP-111 Nitrogen Charging Valves. Valves Replaced & HCVs Returned to Svc (← links)
- 05000366/LER-1982-135, Forwards LER 82-135/03L-0 (← links)
- 05000366/LER-1979-006, Forwards LER 79-006/03L-0 (← links)
- 05000366/LER-1979-005, Forwards LER 79-005/03L-0 (← links)
- 05000366/LER-1979-003, Forwards LER 79-003/03L-0 (← links)
- 05000366/LER-1979-004, Forwards LER 79-004/03L-0 (← links)
- 05000366/LER-1979-008, Forwards LER 79-008/03L-0 (← links)
- 05000366/LER-1983-127, Amended LER 83-127/03L-0:on 831108,while Pumping Water from Drywell Equipment Drain Sump,Pump Discharge Valve 2G11-F018 Would Not Open.Sys Declared Inoperable.Caused by Blown Fuse in Valve Control Circuit (← links)
- 05000366/LER-1983-126, Amended LER 83-126/03L-0:on 831113,safety Relief Valve Tailpipe Temp Recorder 2B21-B614 Observed Stamping Erratically.Caused by Component Failure.Advancing Mechanism, Solenoid & Arm & Hub Assembly Replaced (← links)
- 05000366/LER-1983-099, Updated LER 83-099/03X-1:on 830925 & 1005,hydrogen Dioxide Analyzer a Declared Inoperable During Procedure HNP-2-3882 & Out of Calibr,Respectively.Caused by Worn Diaphragms in Sample Pump a & Instrument Drift (← links)
- 05000366/LER-1983-007, Forwards LER 83-007/03L-0 (← links)
- 05000366/LER-1983-004, Forwards LER 83-004/03L-0 (← links)
- 05000366/LER-1982-122, Forwards LER 82-122/03L-0 (← links)
- 05000366/LER-1983-025, Forwards LER 83-025/03L-0 (← links)
- 05000366/LER-1983-022, Forwards LER 83-022/03L-0 (← links)
- 05000366/LER-1983-015, Forwards LER 83-015/01T-0 (← links)
- 05000366/LER-1983-024, Forwards LER 83-024/03L-0 (← links)
- 05000366/LER-1983-019, Forwards LER 83-019/03L-0 (← links)
- 05000366/LER-1983-023, Forwards LER 83-023/01T-0 (← links)
- 05000366/LER-1983-010, Forwards LER 83-010/03L-0 (← links)
- 05000366/LER-1983-012, Forwards LER 83-012/03L-0 (← links)
- 05000366/LER-1980-022, Forwards Updated LER 80-022/01X-1 (← links)
- 05000366/LER-1983-006, Forwards LER 83-006/03L-0 (← links)
- 05000366/LER-1983-011, Forwards LER 83-011/03L-0 (← links)
- 05000366/LER-1983-009, Forwards LER 83-009/03L-0 (← links)
- 05000366/LER-1983-003, Forwards LER 83-003/03L-0 (← links)
- 05000366/LER-1982-102, Forwards LER 82-102/03L-0 (← links)
- 05000366/LER-1982-007, Forwards LER 82-007/03L-0 (← links)
- 05000366/LER-1981-115, Forwards Updated LER 81-115/03X-1 (← links)
- 05000366/LER-1979-106, Forwards LER 79-106/03L-0 (← links)
- 05000366/LER-1978-053, Forwards LER 78-053/03L-0 (← links)
- 05000366/LER-1978-049, Forwards LER 78-049/03L-0 (← links)
- 05000366/LER-1978-050, Forwards LER 78-050/03L-0 (← links)
- 05000366/LER-1978-054, Forwards LER 78-054/01T-0 (← links)
- 05000366/LER-1978-039, Forwards LER 78-039/03L-0 (← links)
- 05000366/LER-1978-044, Forwards LER 78-044/03L-0 (← links)
- 05000366/LER-1978-035, Forwards LER 78-035/03L-0 (← links)
- 05000366/LER-1978-038, Forwards LER 78-038/03L-0 (← links)
- 05000366/LER-1978-046, Forwards LER 78-046/03L-0 (← links)
- 05000366/LER-1978-033, Forwards LER 78-033/03L-0 (← links)
- 05000366/LER-1978-043, Forwards LER 78-043/03L-0 (← links)
- 05000366/LER-1978-047, Forwards LER 78-047/03L-0 (← links)
- 05000366/LER-1978-045, Forwards LER 78-045/03L-0 (← links)
- 05000366/LER-1978-041, Forwards LER 78-041/03L-0 (← links)
- 05000366/LER-1978-034, Forwards LER 78-034/03L-0 (← links)
- 05000366/LER-1978-040, Forwards LER 78-040/03L-0 (← links)
- 05000366/LER-1979-084, Forwards LER 79-084/03L-0 (← links)
- 05000366/LER-1979-089, Forwards LER 79-089/03L-0 (← links)
- 05000366/LER-1979-079, Forwards LER 79-079/03L-0 (← links)
- 05000366/LER-1979-091, Forwards LER 79-091/03L-0 (← links)
- 05000366/LER-1980-057, Forwards LER 80-057/01T-0 (← links)
- 05000366/LER-1980-038, Forwards LER 80-038/03L-0 (← links)
- 05000366/LER-1980-023, Forwards Updated LER 80-023/03X-1 (← links)
- 05000366/LER-1980-036, Forwards LER 80-036/03L-0 (← links)
- 05000366/LER-1980-030, Forwards LER 80-030/03L-0 (← links)
- 05000366/LER-1979-137, Forwards LER 79-137/03L-0 (← links)
- 05000366/LER-1979-131, Forwards LER 79-131/03L-0 (← links)
- 05000366/LER-1979-138, Forwards LER 79-138/01T-0 (← links)
- 05000366/LER-1979-134, Forwards LER 79-134/03L-0 (← links)
- 05000366/LER-1979-133, Forwards LER 79-133/03L-0 (← links)
- 05000366/LER-1979-090, Forwards LER 79-090/03L-0 (← links)
- 05000366/LER-1978-031, Forwards LER 78-031/01T-0 (← links)
- 05000366/LER-1978-037, Forwards LER 78-037/01T-0 (← links)
- 05000366/LER-1997-010, Forwards LER 97-010-00,re Manual Reactor Shutdown Which Resulted in Water Level Decrease & Group 2 & 5 PCIS Actuations (← links)
- 05000366/LER-1982-079, Forwards Updated LER 82-079/03X-1 (← links)
- 05000366/LER-1981-101, Forwards Updated LER 81-101/03X-1 (← links)
- 05000366/LER-1979-135, Forwards Updated LER 79-135/03X-1 (← links)
- 05000366/LER-1983-055, Updated LER 83-055/03X-1:on 830713 & 21,RCIC Pump 2E51-C002 Would Not Deliver 600 Gpm Required Tech Spec Flow.Caused by Unadjusted Electric Governor Remote Actuator.Actuator Adjusted.W/Amended (← links)
- 05000366/LER-2024-002, Incorrectly Installed Temporary Modification Results in a Condition Prohibited by Plant Technical Specifications (← links)
- 05000366/LER-2024-001, High Pressure Coolant Injection (HPCI) System Inoperable (← links)
- 05000366/LER-2023-003, Manual Reactor Trip Due to Loss of Feedwater (← links)
- 05000366/LER-2023-002, Manual Scram Due to Trip of Both Reactor Recirculation Pumps (← links)
- 05000366/LER-2023-001, Primary Containment Penetration Exceeded Maximum Allowable Primary Containment Leakage Rate (La) (← links)
- 05000366/LER-1989-005-03, :on 890903,feedwater Sys Master Controller Placed in Automatic Following Change from Single Element to Three Element Control,Controller Output Signal Suddenly Went to Zero.Caused by Component Failure (← links)
- 05000366/LER-1989-004-03, :on 890902,automatic Closure of Primary Containment Isolation Sys Valve 2E41-F002 Occurred Due to Isolation Signal.Caused by Personnel Error.Performance of Procedure Suspended.Procedure Revised (← links)
- 05000366/LER-1987-006, :on 870726,inadequate Design for Inverter Cooling Caused Power Failure Resulting in Reactor Scram. Caused by Equipment Failure Due to Inadequate HVAC Design. Inverter Refurbished (← links)
- 05000366/LER-1989-003-03, :on 890728,discovered That Chemical Waste Sample Tank a Discharged W/O Analysis Required by Tech Specs.Caused by Personnel Error.Discharge Terminated, Analysis Performed & Procedure Revised (← links)
- 05000366/LER-1988-022-02, :on 880902,during HPCI Testing,Turbine Tripped & Inboard Steam Supply Isolation Valve Closed.Caused by Magnetic Speed Pickup Cable (SPC) Physical Configuration.Spc Repaired & SPC Protection Mechanism Developed (← links)
- 05000366/LER-1987-007-02, :on 870728,primary Containment Isolation Occurred.Caused by Personnel Error.Vital Ac Power Restored, Group 1 Signal Reset,Personnel Counseled & Need to Identify & Document Sys Responses Reemphasized (← links)
- 05000366/LER-1987-006-02, :on 870726,reactor Scram Occurred Due to Loss of Power.Caused by Equipment Failure Due to Inadequate HVAC Design.Inverter Refurbished & Returned to Svc (← links)
- 05000366/LER-1987-017-02, :on 871119,determined HPCI Sys Not Functioning Correctly in Automatic Mode.Caused by Defective Amplifier Card & Solder Joint Due to Equipment Aging.Card Replaced, Joint Repaired & Controller Amplifier Calibr (← links)
- 05000366/LER-1987-013-02, :on 871019 & 1112,RCIC Primary Containment Isolation Sys Logic Isolated.Caused by Increase in Sensed Torus Chamber Area Differential Temp.Steam Leaks Checked. Second Event Under Investigation (← links)
- 05000366/LER-1986-039-01, :on 861212,while Performing Torus to Drywell Vacuum Breaker Operability Procedure,One Vacuum Breaker Failed to Close.Caused by Binding Air Cylinder Due to Internal Corrosion.Air Cylinder Replaced (← links)
- 05000366/LER-1989-002-02, :on 890223,discovered That Current Rev to Procedure Re Daily Inside Rounds Did Not Verify That Two Circuits in Panel 2R25-S105 de-energized Once Per 24 H. Caused by Personnel Error.Mgt Memo Issued (← links)
- 05000366/LER-1985-017, :on 850430 & 0501,molded Case Circuit Breakers Discovered W/Trip Setpoints &/Or Breaker Locations Contrary to Tech Spec Table 3.8.2.6-1.Caused by Inadequate Instructions for Implementing Design Change (← links)
- 05000366/LER-1987-012-02, :on 870916,RWCU Suction Valve Closed Due to High Ambient Air Temp Condition in HX Room.Caused by Equipment Degradation.Calcium Deposits Removed from a Chiller Condenser Cooling Tubes (← links)
- 05000366/LER-1987-004-02, :on 870616,HPCI Found Incapable of Performing Intended Safety Function.During 870618 Testing,Two Hpic Steam Supply Valve Isolations Occurred.Cause Under Investigation (← links)
- 05000366/LER-1987-011-02, :on 870902,surveillance Requirements for Main Control Room Environ Control Sys Missed,In Violation of Tech Specs.Caused by Personnel Error.Procedures Revised & Satisfactorily Performed & Personnel Counseled (← links)
- 05000366/LER-1987-010-02, :on 870818,reactor Shut Down Due to Leak Observed in 1-inch Instrument Line.Caused by Failure in Instrument Line in Heat Affected Zone Adjacent to Socket Weld.Weld Overlay Designed,Installed & Tested (← links)
- 05000366/LER-1997-009-01, :on 970911,discovered Normal & Standby Battery Charges for Both 2A & 2C DGs Were Disconnected.Caused by Personnel Error.Declared DGs Inoperable & Counseled Individual Involved (← links)
- 05000366/LER-1998-002-02, :on 980318,assembly Error Led to Malfunctioning Governor Causing EDG Inoperability.Caused by Sticking Shutdown Solenoid on DG Governor.Established Periodic Replacement Schedule for Solenoid (← links)
- 05000366/LER-1997-008-01, :on 970818,main Journal Bearing Damage Rendered HPCI Sys Inoperable.Caused by Small Particles Contaminating Bearing Housing.Inspected & Replaced Inboard & Outboard Main Pump Bearings (← links)
- 05000366/LER-1986-031-02, :on 860927,full Reactor Protection Sys Actuations Occurred.Caused by Spurious Electrical Noise Signals During Outage Maint/Mod Activities.Logic Actuation Signals Reset (← links)
- 05000366/LER-1986-030-01, :on 860925,full Reactor Protection Sys Actuations Occurred.Caused by Static Electrical Noise. Operations Personnel Reset Actuation Signal (← links)
- 05000366/LER-1986-020-01, :on 860924,primary Containment Penetrations Failed Local Leak Rate Tests.Full Description of Causes & Corrective Actions Will Be Provided (← links)
- 05000366/LER-1986-027-01, :on 860921,operation Personnel Noted That RHR-shutdown Cooling Inboard Primary Containment Isolation Valve 2E11-F009 Isolated.Caused by Error in Surveillance Procedure.Procedure Revised (← links)
- 05000366/LER-1986-026-01, :on 860919,reactor Protection Sys Actuation Occurred Initiating one-half Primary Containment Isolation Sys Valve Group 2 & RHR Shutdown Cooling Sys Isolation. Caused by False Signals (← links)
- 05000366/LER-1986-017-01, :on 860915,RCIC Inboard Primary Containment Isolation Sys Valve Closed for No Apparent Reason.Caused by Spurious Electrical Noise.Valve Reopened (← links)
- 05000366/LER-1986-023-01, :on 860903,reactor Protection Sys Scram Occurred.Caused by Leaking Oil Filter Gasket Initiating Main Turbine trip.Electro-hydraulic Control Leak Repaired, Procedures Revised & Personnel Counseled (← links)
- 05000366/LER-1986-035, :on 861113,during Performance of Plant Procedure,Discovered Both Loops of Core Spray Sys Incapable of Performing Intended Function.Caused by Personnel Error in Procedure Development.Personnel Counseled (← links)
- 05000366/LER-1986-024-01, :on 860904,reactor Scrammed.Caused by Dirty Relay Contacts,Preventing Offgas Condenser Drain Valve from Opening & Creating Vacuum Loss.Contacts Cleaned.Valve Function Verified (← links)
- 05000366/LER-1986-018, :on 860810,RWCU Isolated on High Differential Flow Signal.Caused by Failure to Fill & Vent RWCU Resin Trap &/Or Resin Trap Isolation Valves Being Partially Open. Demineralization Procedure & Valves Modified (← links)
- 05000366/LER-1986-021-01, :on 860828,reactor Protection Sys Motor Generator Set C Cabinet Output Breaker Tripped,Causing Loss of Power to Bus A.Caused by Failed Limit Switch Assembly. Limit Switch Assembly & Torque Switch Replaced (← links)
- 05000366/LER-1983-048-03, /03X-1:on 830625,Tech Spec 3.9.5.3 Violated When Train a of Standby Gas Treatment Failed to Start & Heater Circuitry Tripped.Caused by Switches Not Having Automatic Reset Capability.Switches Manually Reset (← links)
- 05000366/LER-1986-034-01, :on 861105,emergency Diesel Generator 2C Started & Tied to Bus.Caused by Personnel Not Adequately Reviewing Logic Prints Before Removing Transformer Compartments from Bus 2G.Sys Restored (← links)
- 05000366/LER-1986-032-01, :on 861026,during Backwashing & Precoating RWCU Demineralizer Vessel 2G31-D002B,RWCU Sys Isolated on High Differential Flow Signal.Caused by Mechanical Element Becoming Stuck.Isolation Signal Reset (← links)
- 05000366/LER-1986-025-01, :on 861023,personnel Determined That Certain Instruments Listed in Tech Specs Not Tested Periodically to Assure Appropriate Sys Actuation.Caused by Personnel Error. Personnel Counseled (← links)
- 05000366/LER-1987-008-02, :on 870422,condensate Pump 2C Tripped,Causing Loss of Feedwater & Reactor Low Level Scram.Caused by Hard Electrical Ground Condition in Pump Motor & Shorting of Stator Coils.Pump Motor Replaced (← links)
- 05000366/LER-1986-002-01, :on 860115,RWCU Isolation Valves Discovered Isolated on High Sys Differential Flow.Caused by Personnel Error When Drain Valve Not Properly Closed Prior to Placing Loop a of RWCU in Svc (← links)
- 05000366/LER-1986-014-01, :on 860717 HPCI Sys Inoperable Due to HPCI Turbine Failure to Achieve Rated Speed.Caused by Hydraulic Turbine Control Valve Not Opened Fully Because Rag Blocked Pump.Pump Replaced (← links)
- 05000366/LER-1987-003-01, :on 870126,during Main Steam Line Radiation Monitor Functional Test,Primary Containment Isolation Sys Group 1 Isolation Occurred.Caused by Equipment Failure. Temp Sensor Will Be Replaced (← links)
- 05000366/LER-1985-010, :on 850409,plant Personnel Determined That Certain Valves Leaking in Excess of Tech Spec Limits.Caused by Contract Personnel Error & Normal Component Wear.Valves Repaired & Successfully Leak Tested (← links)
- 05000366/LER-1986-020, :on 860924,primary Containment Penetrations Failed Local Leak Tests.Caused by Normal Equipment Wear. Affected Valves of 34 Failed Penetration Tests Cycled, Repaired,Rebuilt or Replaced (← links)
- 05000366/LER-1985-038, :on 851222,power from Reactor Protection Sys Bus a Lost.Caused by Blown Relay Coil Power Supply Fuse. Fuse Replaced & Half Scram Reset (← links)
- 05000366/LER-1986-029, :on 860928,full Reactor Protection Sys Actuation Occurred.Caused by Upscale Failure of LPRM Input. Scram Signal Reset.Lprm String to Be Replaced During Current Refueling Outage (← links)
- 05000366/LER-1986-022-01, :on 860829,reactor Protection Sys Scram Occurred When Technician Performing Surveillance Testing Attempted to Open Stuck Valve on Yarway Instruments.Caused by Personnel Error.Procedure Revised (← links)
- 05000366/LER-1986-018-01, :on 860810,RWCU Sys Isolated on High Differential Flow Signal.Caused by RWCU Resin Trap Not Being Filled & Vented Prior to Placing Sys in Svc or Resin Trap Isolation Valves Being Open.Procedure Modified (← links)
- 05000366/LER-1986-016-01, :on 860807,nine Primary Containment Manual Valves Found Not Receiving Procedurally Controlled Position Checks.Caused by Inadequate Procedure.Surveillance Performed.Procedure Modified to Include Valves (← links)
- 05000366/LER-1999-006, :on 990615,loss of Condenser Vacuum Leads to Manual Reactor Scram & ESF Actuation.Caused by Loss of Vacuum in Main Condenser.Operating Order Issued.With (← links)
- 05000366/LER-1986-005, :on 860327,RWCU Sys Isolation Occurred Due to Stuck Filter/Demineralizer Valve 2G31-F056B When Isolation Control Switch in Deisolate Position.Cause Not Found.Damaged Rcwu Sys Valves Repaired (← links)
- 05000366/LER-1987-005-01, :on 870320,RCWU Sys Isolated on Ventilation High Differential Ambient Air Temp & High Differential Flow Signals.Caused by Leaking Valves.Engineering Evaluation Conducted & Valves Repaired (← links)
- 05000366/LER-1987-002-02, :on 870215,auto-initiation of Standby Gas Treatment Sys Occurred.Caused by Personnel Error & Failed Radiation Monitoring Instrument.Equipment Components Replaced (← links)
- 05000366/LER-1986-039-01, :on 861212,during torus-to-drywell Vacuum Breaker Operability Procedure,Breaker Would Not Close & Plant Shut Down.Cause Under Investigation.Air Cylinder Replaced.Vacuum Breakers Inspected (← links)
- 05000366/LER-1999-005, :on 990505,generator Ground Fault Caused Turbine Trip & Reactor Scram.Caused by Turning Vanes Which Broke Loose.Pieces of Broken Vanes & Rails Were Retrieved from Isophase Bus Duct.With (← links)
- 05000366/LER-1998-004-01, :on 981005,noted That full-in Position Indicating Light Did Not Extinguish as Expected When CR 38-15 Was Withdrawn.Caused by Personnel Error.Jumper Was Removed from RPIS Circuit Card for Rod 38-15 (← links)
- 05000366/LER-1986-002, :on 860115,RWCU Primary Containment Inboard & Outboard Suction Isolation Valves 2G31-F001 & 2G31-F004 Isolated on High Sys Differential Flow.Caused by Personnel Error.Personnel Counseled.Valve Repaired (← links)
- 05000366/LER-1986-013-01, :on 860701,suppression chamber-to-drywell Vacuum Breaker Not Demonstrated Operable within 2 H of Discharge of Steam from Safety/Relief Valves to Suppression Chamber.Caused by Personnel Error.Memo Issued (← links)
- 05000366/LER-1986-012-01, :on 860628,feedwater Flow Loss Resulted in Reactor Scram & Isolation of Primary Containment Valves on Low Water Level.Caused by Failure of Flow Control Valve (2N21-F007).Pneumatic Relay Assembly Replaced (← links)
- 05000366/LER-1978-031-01, /01T-0:on 780915,during Shutdown,Core Spray Piping Hangers 2E21-CS-H6 & 2E21-CS-H92 in Core Spray Suction Lines Found to Lack Strength for Load.New Hangers Installed.Caused by Use of Incorrect Drawing (← links)
- 05000366/LER-1978-037-01, /01T-0:on 780920.diesel Generator Control Logic Identified Potential Problem Which Could Exist Under LOCA or Losp.Caused by Design Discrepancy in Generator.Design Change Request Initiated (← links)
- 05000366/LER-1986-005-01, :on 860327,while Placing Filter/Demineralizer in Svc,High Differential Flow Occurred,Causing RWCU Isolation.Cause Unknown.Investigation Will Be Performed to Determine Root Cause (← links)
- 05000366/LER-1998-001-01, :on 980127,high Pressure Coolant Injection Sys Inoperable During Maintenance Investigation Occurred.Caused by HPCI Sys Controller Being Placed in Manual Mode.Procedure Revised (← links)
- 05000366/LER-1986-006-01, :on 860320,hydraulic Shock & Sway Arrestor Insp & Test Procedure Determined Inadequate,Per Tech Spec Section 4.7.4.b.Caused by Failure to Revise Procedure After License Amend (← links)
- 05000366/LER-1997-010-02, :on 971120,manual Reactor Shutdown Resulted in Water Level Decrease & Group 2 & 5 PCIS Actuations.Caused by Component Failure.Discharge Check Valve 2N21-F019A Was Removed,Inspected & Rebuilt (← links)
- 05000366/LER-1986-010-01, :on 860424,relay Actuated,Tripping Main Turbine Which Resulted in Reactor Scram.Caused by Steam Leak.All Moisture in Exciter Equipment Removed,Failed Pipe Sections Replaced & Expanded Investigations Initiated (← links)
- 05000366/LER-1986-009-01, :on 860420,moisture Separator Reheater a High Level Trip Actuated,Tripping Main Turbine & Resulting in Reactor Scram.Caused by Failure of Level Switch Due to Moisture from Leaking Valve (← links)
- 05000366/LER-1986-011-01, :on 860425,component Failures Prevented 4 H Grab Sampling.Iodine/Noble Gas Sample Sys Inoperable Due to Blown Power Fuse.Particulate Sample Sys Inoperable Due to Sys Vacuum Pump Failure (← links)
- 05000366/LER-1998-005-04, :on 981117,missed TS Surveillance Was Noted. Caused by Administrative Error.Changed Manner in Which Surveillance Database Updates Are Initiated,Tracked & Implemented.With (← links)
- 05000366/LER-1978-065-01, /01T-0 on 781109:suppression Chamber to Drywell Vacuum breaker(2T48-F323I)inoperable.Caused by mis-interpretation of Tech Specs (← links)
- 05000366/LER-1978-065, Forwards LER 78-065/01T-0 (← links)
- 05000366/LER-1978-061-03, /03L-0 on 781029:during Scram 2-78-14,2B21-NO24A Instru Switch 2 Failed to Actuate at Setpoint 111.6+/-3.6 Inches.Cause:Magnet on 2 Switch Had Metal Shavings on It. Instru Cover Was Loose & Shavings Entered Instru (← links)
- 05000366/LER-1978-061, Forwards LER 78-061/03L-0 (← links)
- 05000366/LER-1978-060-03, /03L-0 on 781031:during Procedure HNP-2-10531 & Reactor in Run Mode,The 2R43-S001 C Diesel Failed to Reach 250 RPM W/In 7 Seconds,Due to Faulty Elec Speed Switch Signal (← links)
- 05000366/LER-1978-060, Forwards LER 78-060/03l-0 (← links)
- 05000366/LER-1978-051-03, /03L-0 on 781017:during Startup Testing While Calibrating APRM High Flux Scram Setpoints,Discerned That Trip Setpoints Were Set in Excess of Reg Guide Criteria. Caused by Deficiency in Procedures (← links)
- 05000366/LER-1978-051, Forwards LER 78-051/03L-0 (← links)
- 05000366/LER-1988-017, :on 880527,air Bubble Released Into Condensate Sys Tripping Condensate Booster Pumps & Reactor Feed Pumps on Low Suction Pressure.Caused by Deficient Condensate & Feedwater Sys Operating Procedure (← links)
- 05000366/LER-1988-016, :on 880523,seven Snubbers Inadvertently Not Incorporated Into Procedure During Previous Procedure Revs. Caused by Procedure Inadequacy.Temporary Procedure Change Developed & Personnel Counseled (← links)
- 05000366/LER-1988-023-01, :on 880920,inadequate Procedure Results in Missed Tech Specs Surveillance.Caused by Inadequate Procedure.Limiting Condition for Operation Initiated to Ensure Tech Specs Met (← links)
- 05000366/LER-1998-004-04, :on 981005,condition Prohibited by TS Was Noted.Caused by Personnel Error.Coached Involved Personnel & Briefed Other Technicians on Event.With (← links)
- 05000366/LER-1988-021-01, :on 880831,isolation of Group 5 Primary Containment Isolation Sys Valves Occurred.Caused by High Differential Flow Condition Due to Malfunctioning Relief Valve.Valve Repaired & Returned to Svc (← links)
- 05000366/LER-1988-014-01, :on 880427,surveillance Requirements Not Met Resulting in Condition Prohibited by Tech Spec.Caused by Procedural Inadequacy.Scheduling of Development of Permanent Procedure Revs Underway (← links)
- 05000366/LER-1998-003-05, :on 980923,RPS Actuation Occurred Due to Valve Position Error.Cause indeterminate.Re-pressurized Scram Air Header & Checked Valves in Pneumatic Lineup (← links)
- 05000366/LER-1988-012, :on 880421,surveillance Requirements Not Met Due to Failure to Test Response Time of Isolation Actuation Instrumentation.Caused by Procedure Inadequacy.Special Purpose Procedures Developed & Performed (← links)
- 05000366/LER-1988-013, :on 880415,during Performance of Functional Test Procedure to Return Hydrogen Recombiner to Svc,Failure to Test Piping Violated Primary Containment Integrity.Caused by Personnel Error.Isolation Valves Closed (← links)
- 05000366/LER-1988-011-01, :on 880417,reactor Protection Sys Channel B Unexpectedly Tripped,Resulting in Reactor Scram.Caused by Failed 15-volt Regulator Card in Average Power Range Monitor B.Trip Sys Evaluated & Failed Parts Replaced (← links)
- 05000366/LER-1988-010-01, :on 880414,discovered Tech Spec Violation in Determining Whether Response Time Acceptance Criteria Had Been Met.Caused by Procedure Inadequacy.Rev or Replacement of Procedure Scheduled (← links)
- 05000366/LER-1988-020-01, :on 880805,when Reinstalling Repaired Feedwater Min Flow Controller,Fuse Blew Causing Min Flow Valves on Condensate,Condensate Booster & Reactor Feed Pumps to Fail Open.Caused by Design Deficiency (← links)
- 05000366/LER-1986-003, :on 860119,Group 1 Actuation Occurred Causing MSIV Closure & Reactor Scram.Caused by High Turbine Bldg Temp Condition & Failure of Three Mode Switch Contracts. RCIC Sys Recalibr.Amplifier Replaced (← links)
- 05000366/LER-1988-015-01, :on 880729,Group 5 Isolation of Primary Containment Isolation Valves Occurred.Caused by Bound Open Relief Valve.Valve Repaired & Personnel Counseled.On 880802, Isolation Occurred.Caused by Inoperable Valve (← links)
- 05000366/LER-1987-010, :on 870818,failed Instrument Line Leakage Exceeds Allowable Limits Resulting in Reactor Shutdown. Caused by High Cycle (Vibration) Fatigue.Plant Shut Down & Weld Overlay Installed (← links)
- 05000366/LER-1988-008, :on 880321,reactor Manually Scrammed Due to Fluctuations in Reactor Vessel Water Level.Caused by Improper Settings on Master Controller Module Resulting from Procedural Deficiency.Settings Reset (← links)
- 05000366/LER-1988-006-01, :on 880318,unplanned Scram Occurred & Main Steam Line Isolation Valve Failed to Close.Scram Caused by Deficiency in Procedure.Cause of Valve Failure Unknown. Procedure Rev Issued (← links)
- 05000366/LER-1988-004, :on 880120,failure of Primary Containment Isolation Sys Penetrations & Hatches to Meet Tech Spec Leakage Requirements Determined.Caused by Normal Equipment Use & Wear.Affected Valves Replaced (← links)
- 05000366/LER-1988-009, :on 880321,local Leak Rate Test Missed Resulting in Condition Prohibited by Tech Specs.Caused by Personnel Error.Test Performed & Penetrations Declared Operable (← links)
- 05000366/LER-1988-005-01, :on 880305,instruments Remained Inoperable for Longer than Permitted by Tech Specs.Caused by Personnel Error in Failing to Comply W/Procedure.Procedure Revised & Plant Personnel Counselled (← links)
- 05000366/LER-1988-007, :on 880212,valves on Air Supply Lines Serving Pneumatic Actuators Failed Local Leak Rate Testing.Caused by Design Deficiency.Appropriate Tech Spec Actions Initiated & Valve Deficiencies Corrected (← links)
- 05000366/LER-1987-004, :on 870616,HPCI Determined Incapable of Performing Intended Safety Function.Caused by Defective Procedure & Personnel Errors.Equipment Replaced,Checked & Calibr & as-built Notice Issued (← links)
- 05000366/LER-1988-019, :on 880604,licensed Operations Personnel Determined That Operability Requirements of Tech Specs for Functional Testing of Turbine Stop Valve Not Met.Caused by Personnel Error.Personnel Counseled (← links)
- 05000366/LER-1978-058-03, /03L-0 on 781018:hose Stations Were Not Inspected as Req by Tech Spec.Caused by Changeover in Procedures, Resulting in Oversight.Personnel Instructed & New Procedures Implemented (← links)
- 05000366/LER-1978-058, Forwards LER 78-058/03L-0 (← links)
- 05000366/LER-1978-056-03, /03l-0 on 781027:while Performing Procedure HNP-2-10315,2E41-F001 Valve Failed to Oper During HPCI Quick Start.Caused by Motor Shunt Field Insulation Failure (← links)
- 05000366/LER-1978-056, Forwards LER 78-056/03l-0 (← links)
- 05000366/LER-1988-003, :on 880117,spurious Valve Closure of RWCU Primary Containment Isolation Sys Noted.Caused by Spurious Isolation of Valve.Work Activities in Main Control Room & Other Sys Operations Reviewed (← links)
- 05000366/LER-1978-063-03, /03L-0 on 781102:reactor Maximum Cooldown Rate of 100 Degrees F Exceeded During Reactor Auto Scram & Vessel Depressurization.Caused by Personnel Error;Personnel Have Been Admonished (← links)
- 05000366/LER-1988-002, :on 880219,surveillance Requirements of Tech Specs Not Met.Caused by Personnel Error.Special Purpose Procedures Developed & Surveillances Performed or Scheduled (← links)
- 05000366/LER-1978-053-03, /03L-0:on 781016,RPS Channel a Found to Be Inoperative W/Reactor in Run Mode While Performing Procedure HNP-2-3054.Caused by Instrument Drift on APRM E Lack of LPRM Inputs on APRM A. Readjustments Made (← links)
- 05000366/LER-1987-009-01, :on 870803,reactor Water Level Decrease Due to Reactor Protection Sys Actuation Setpoint & Reactor Scram Occurred.Caused by Electrical Equipment Failure.Jumpers Installed & Equipment Removed from Svc (← links)
- 05000366/LER-1987-016-02, :on 871231,surveillance Not Performed within Time Limit.Caused by Personnel Error.Surveillance Performed, Verified & Schedule Modified.Personnel Counseled. W/88018 Ltr (← links)
- 05000366/LER-1997-006, :on 970407,TS Surveillance on Source Range Monitors Was Missed.Caused by Data Entry Error.Control Rod Exercises Suspended Until SRM Surveillance Was Successfully Perfomed (← links)
- 05000366/LER-1978-049-03, /03L-0:on 781009,reactor Water Level Indicator 2C82-R005 Had Continuous Reading Higher than +60 Inches. Caused by Level Indicator Transmitter 2C82-N005 Piped in Backwards & Bad Amplifier (← links)
- 05000366/LER-1978-050-03, /03L-0:on 781017,w/reactor in Run Mode,Standby Plant Svc Pump Lights Found Inoperable.Caused by Water in Starter Box.Low Pressure Pulled moisture-laden Cool Air Into Diesel Bldg Pullbox (← links)
- 05000366/LER-1978-054-01, /01T-0:on 781017,differential Pressure Between Drywell & Torus Could Not Be Established W/O High Leakage Rate.Caused by Improper Setting of Drywell Vacuum Breaker Valves.Valves Repaired (← links)
- 05000366/LER-1978-080-03, /03L-0 on 781210:w/reactor in Run Mode,During Weekly Calibr Check HNP-2-3604,2N62-N009B Was Found Inoper, Due to Bad Hydrogen Sensor (← links)
- 05000366/LER-1978-076-03, /03L-0 on 781205:w/reactor in Run Mode During Special Inspec of 3-hour Fire Barriers,A Manila Rope Was Found Thru Fire Seal of Cable Tray 2BHA902 in the RPS M.G. Set Room,Due to Constr Personnel Error (← links)
- 05000366/LER-1978-080, Forwards LER 78-080/03L-0 (← links)
- 05000366/LER-1978-076, Forwards LER 78-076/03L-0 (← links)
- 05000366/LER-1978-078-03, /03L-0 on 781207:during Normal Oper & Performance of Procedure HNP-2-3307,HPCI Steam Line Flow Ft&C Switch 2E41-N004 Was at -217 in Water,Due to Instru Drift (← links)
- 05000366/LER-1978-078, Forwards LER 78-078/03L-0 (← links)
- 05000366/LER-1978-079-03, /03L-0 on 781208:during Steady State Oper,During Procedure HNP-2-3410,2E51-N017 Would Trip at -116 of Water for Low Setpoint & 111.9 of Water at High Setpoint,Due to Instru Drift (← links)
- 05000366/LER-1978-079, Forwards LER 78-079/03L-0 (← links)
- 05000366/LER-1978-081-03, /03L-0 on 781210:noted That 2B21-N017C Tripped at 37.7 Inches of Water Decreasing.Caused by Instru Drift (← links)
- 05000366/LER-1978-039-03, /03L-0:on 780921,discovered Drywell Airlock Door Seals Not Inspected Every 72 H While Multiple Entries Performed.Surveillance Performed & Completed on 780921 (← links)
- 05000366/LER-1978-032-03, /03L-0:on 780916,continuous Fire Watch Not Established at Unsealed Conduit.When Failure Was Recognized, Continuous Fire Watch Immediately Established.Shift Foreman Supervisors Made Aware of Conditions to Prevent Recurrence (← links)
- 05000366/LER-1978-044-03, /03L-0:on 780923,during Startup & Power Ascension Testing,Drywell Pressure Exceeded Tech Spec Limit of 0.75 Psig for 30 Minutes.Caused by Temp Increase While Running HPCI (← links)
- 05000366/LER-1978-035-03, /03L-0:on 780914,weekly IRM Procedure HNP-2-3052 Not Completed within Tech Spec Time Interval.Caused by Personnel Oversight (← links)
- 05000366/LER-1978-038-03, /03L-0:on 780920,during Review of Commitments to Nrc,Discovered That Fire Team Training Not Conducted.Team Members Will Review Procedures by 781104 (← links)
- 05000366/LER-1978-046-03, /03L-0:on 780926,rated Flow W/Two Pumps Running in Loop 1 Could Not Be Achieved for Either Loop of RHR Svc Water Pump.Caused by Damaged Cavitrol V Trims & 10 Inch Fisher Valves (← links)
- 05000366/LER-1978-033-03, /03L-0:on 780915,during Plant Startup,Drywell Pressure Exceeded 0.75 Psig Tech Spec Limit (← links)
- 05000366/LER-1978-043-03, /03L-0:on 780923:CRD Hatch Cover Removed & Both Personnel Air Lock Doors Opened.Leak Tests Not Completed in Specified Time Period.First Incident Caused by Jamming of Inner Personnel Air Lock Door (← links)
- 05000366/LER-1978-047-03, /03L-0:on 780926,HNP-2-3054 of APRM Surveillance Signed Off During Run Mode at 174 Mwt Due to Personnel Misunderstanding.Personnel Instructed to Adhere to Schedule (← links)
- 05000366/LER-1978-045-03, /03L-0:on 780923,while Running HPCI Sys,Torus Water Temp Rose to 106 F.Caused by RHR Svc Water Pump Cooling Water Relief Valve Stuck Partially Open.Valve Cleaned,Checked & Reinstalled (← links)
- 05000366/LER-1978-034-03, /03L-0:on 780917,electrical Cables for Fire Dampers Between Generator & Battery Rooms Found Improperly Routed.Cables Rerouted (← links)
- 05000366/LER-1978-041-03, /03L-0:on 78092,setpoint of Valve 2B21-N013C Found Higher than 200 F.Caused by Setpoint Drift.Switch Recalibr (← links)
- 05000366/LER-1978-040-03, /03L-0:on 78092,switch 2B21-n010C Setpoint Found Higher than 200f.Caused by Drift of Temp Switch.Switch Recalibr (← links)
- 05000366/LER-1978-070-03, /03L-0 on 781115:procedure HNP-2-5202 Took Over 2 Hours Because 2B21-NO17C Could Not Be Calibr.Instru Was Replaced (← links)
- 05000366/LER-1978-070, Forwards LER 78-070/03L-0 (← links)
- 05000366/LER-1978-074-03, /03L-0 on 781203:settings Found at 1090 Psig on Turbine Control Valve Fast Closure Oil Pressure Low Trip Switches 2C71-N005A & 2C71-N005B.Tech Specs Req 1100psig. Caused by Instru Drift (← links)
- 05000366/LER-1978-074, Forwards LER 78-074/03L-0 (← links)
- 05000366/LER-1978-073, Forwards LER 78-073/03L-0 (← links)
- 05000366/LER-1978-075-03, /03L-0 on 781204:in Run Mode,Both Secondary Containment Doors on the 130 Ft El Were Opened at the Same Time Due to Personnel Error.Incident Presented No Hazards. Personnel Were Reminded of Proper Procedure (← links)
- 05000366/LER-1978-075, Forwards LER 78-075/03L-0 (← links)
- 05000366/LER-1978-066-03, /03L-0 on 781109:suppression Chamber Drywell Vacuum Breakers Were Not Demonstrated Operable W/In Tech Spec Time Limit Due to Personnel Error (← links)
- 05000366/LER-1978-071-03, /03L-0 on 781117:procedure HNP-2-3003 Was Not Completed W/In Specified Interval Per Tech Specs 4.3.1.1(4) for Instru 2B21-N017D.Caused by Personnel Repairing 2 Other Instru & Procedure Had to Be Stopped Due to Repairs (← links)
- 05000366/LER-1978-066, Forwards LER 78-066/03L-0 (← links)
- 05000366/LER-1978-071, Forwards LER 78-071/03L-0 (← links)
- 05000366/LER-1978-072, Forwards LER 78-072/03L-0 (← links)
- 05000366/LER-1987-013, :on 871019,RCIC Primary Containment Isolation Sys Logic Actuation Occurred.Caused by Missing Insulation on HPCI Steam Supply Piping.Steam Leaks Checked & Required Tech Spec Actions Taken & Temporary Fans Installed (← links)
- 05000366/LER-1986-035, :on 851228,4160-volt Bus 2E Tripped,Resulting in Multiple ESF Actuations.Caused by Replacement of Cover on Overcurrent Neutral Ground Detector Relay 2532-K792-4 After Maint.Calibr of Relay During Outage Planned (← links)
- 05000366/LER-1985-010, :on 850409,during Performance of Procedure 42SV-TET-001-2,valve Leakage Identified in Excess of Tech Spec Limits.Caused by Failure to Reinstall Bypass Valve Internals (← links)
- 05000366/LER-1997-007, :on 970422,main Turbine Tripped & Automatic Reactor Shutdown Due to Loss of Main Condenser Vacuum.Main Condenser Waterboxes Were Vented & Circulating Pump Inlet Screens Were Cleaned (← links)
- 05000366/LER-1986-008-01, :on 860218,ESF Actuation Occurred.Caused by High RWCU Sys Differential Flow Due to Filter/Demineralizer Isolation Valves Opening Too Quickly When Manually Assisted During Maint.Engineering Review Underway (← links)
- 05000366/LER-1985-037-01, :on 851218,during Surveillance Procedure 57SV-E41-003-2,RCIC Outboard Primary Containment Isolation Valve 2E51-F008 Isolated.Caused by Personnel Error. Personnel Disciplined & Valve Reopened (← links)
- 05000366/LER-1985-038-01, :on 851222,during 100% Power,Reactor Scram Relay Fuse 2C71-F14C Blew,Resulting in Loss of Power to Reactor Protection Sys Bus A.Cause Undetermined.Fuse Replaced.Reactor half-scram Reset (← links)
- 05000366/LER-1986-007, :on 860213,HPCI Steam Supply Outboard Isolation Valve 2E41-F002 Isolated Due to Unplanned Isolation Signal from Differential Pressure Transmitter.Caused by Defective Procedure.New Procedure Written (← links)
- 05000366/LER-1997-001-02, :on 970125,HPCI Sys Inoperable Due to Unplanned Esfa.Caused by Less than Adequate Procedures.Hpci Sys Restored to Operable Status & Use of Affected Procedures Prohibited (← links)
- 05000366/LER-1985-032-01, :on 851005,while Placing Reactor Water Cleanup (RWCU) Sys in Svc,Personnel Noted That RWCU Pump Inboard Suction Isolation Valve Isolated on High Sys Differential Flow.Caused by Valves Leaking Past Seats (← links)
- 05000366/LER-1985-033-01, :on 851110,RWCU Pump Inboard & Outboard Suction Isolation Valves Isolated.Also on 851110,RWCU Sys Isolated on High Sys Differential Flow.Caused by Loop a Resin Strainer Drain Valve Leakage (← links)
- 05000366/LER-1997-004-02, :on 970331,inaccurate List of Primary Containment Isolation Valves Resulted in Missed Surveillance.Caused by Listing of PCIS Valve Position Indications.Performed Missed Surveillance (← links)
- 05000366/LER-1985-021, :on 850707,reactor Water Cleanup Pump Inboard & Outboard Suction Isolation Valves Isolated on High Sys Differential Flow.Caused by Incompletely Closed Valves Due to Misaligned Indicators.Valves Closed (← links)
- 05000366/LER-1997-005-01, :on 970402,unplanned Automatic Engineered Safety Feature Actuation Occurred Due to Personnel Error. Emergency Bus 2F Was Returned to Svc on 970402 (← links)
- 05000366/LER-1985-030-01, :on 851105,reactor Scram Occurred Due to Low Oil Pressure on Condensate Booster Pump 2B.Caused by Stuck Suction Valve on Main Oil Pump.Suction Valve Strainer & Oil Sump Cleaned & Related Oil Filters Changed (← links)
- 05000366/LER-1985-036, :on 851107,full Reactor Scram Occurred Due to intermediate-range Monitors 2C51-K601D & 2C51-K601E Spiking to hi-hi Setpoint Which Actuated Reactor Protection Sys. Caused by Personnel Error (← links)
- 05000366/LER-1997-003-02, :on 970328,excessive Leakage Identified on Secondary Bypass Valves Was Caused by Undersized Valve Operators & Inappropriate Valve & Operator Orientation. Re-routed Piping Containing Valves (← links)
- 05000366/LER-1997-002-02, :on 970325,grounded Jumper Caused Blown Fuse & Engineered Safety Features Actuations.Replaced Blown Fuse & Policies Contributing to Event Will Be Reviewed by 970601 (← links)
- 05000366/LER-1985-027-01, :on 850904,during Test,Fuse Blew,Resulting in Automatic Isolation of Inboard Reactor Water Cleanup Primary Containment Isolation Valve.Caused by Jumper Coming Off One Relay Terminal.Fuse Replaced (← links)
- 05000366/LER-1985-020, :on 850726,RWCU Pump Inboard & Outboard Suction Isolation Valves Isolated on High Sys Differential Flow. Caused by Leakage Past RWCU Loop a Resin Strainer Drain Valves.Investigation Continuing (← links)
- 05000366/LER-1986-004, :on 860131,62-day Surveillance Requirement for Fire Detector Alarms Not Met.Caused by Personnel Oversight Resulting in Procedural Deficiency.Procedure 425V-SUV-015-25 Revised (← links)
- 05000366/LER-1986-001-01, :on 860110,RWCU Sys Outboard Primary Containment Isolation Valve 2GB1-F00t Isolated Due to Blown Fuse.Caused by Normal Wear of Sliding Disconnect Bolt Threads on Electrical Link ccc-2 (← links)
- 05000366/LER-1985-038, :on 851222,ESF Actuation Occurred Due to Loss of Power to Reactor Protection Sys Bus A.Caused by Blown Fuse.Relay Fuse Replaced,Half Scram Reset & Plant Returned to Normal Operation (← links)
- 05000366/LER-1985-020-01, :on 850726,reactor Water Cleanup Pump Inboard & Outboard Suction Isolation Valves 2G31-F001 & 2G31-F004, Isolated on High Sys Differential Flow.Caused by Filter Demineralizer Not Being Completely Filled (← links)
- 05000366/LER-1979-106-03, /03L-0:on 790919,several Operational Cycle & Other Surveillances Were Overdue.Caused by Misinterpretation of Tech Specs Re Starting Time for Surveillances.Exemption Requested & Granted (← links)
- 05000366/LER-1985-028, :on 850809,12 & 22,surveillance Requirements Including Drywell high-range Radiation Recorder Calibr Not Satisfied.Caused by Not Incorporating Tech Specs Amends Into Procedures.Review Initiated (← links)
- 05000366/LER-1985-022-01, :on 850814,personnel Determined That Monthly Channel Check for Drywell High Range Pressure & Radiation Instrumentation Not Performed Per Tech Specs. Caused by Personnel Error (← links)
- 05000366/LER-1985-028-01, :on 850809 & 12 During line-by-line Review of Tech Specs & Implementing Procedures,Personnel Noted Three Surveillance Requirements for high-range Radiation Recorder Not Satisfied After Addition of Amends (← links)
- 05000366/LER-1985-029-01, :on 850809,during Update of Seismic Category 1 Structures Settlement Rept,Personnel Noted Structure Settlement Surveillance Not Performed in Jan 1981 & 1984 & Aug 1984.Caused by Procedural Inadequacy (← links)
- 05000366/LER-1985-021-01, :on 850707,during Reactor Water Cleanup Sys Procedure,Inboard & Outboard Suction Isolation Valves Isolated.Caused by Misaligned Position Indicators.Repairs in Progress (← links)
- 05000366/LER-1996-004-03, :on 960917,misinterpretation of Requirements Resulted in Missed TSs Surveillance Occurred.Caused by Misinterpretation of Unit 2 TSs Surveillance.Procedure 57SV-011-2S Was Written & Approved (← links)
- 05000366/LER-1985-031, :on 850913,reactor Water Cleanup Pump Inboard Suction Isolation Valve Isolated.Caused by Nonlicensed Staff Not Completely Closing Strainer Backwash Valves Prior to Svc.Instructions Placed Next to Valves (← links)
- 05000366/LER-1979-084-03, /03L-0 on 790729:during Maint,Hpci Pump Suction Low Pressure Switch 2E41-N010 Found Inoperative.Caused by Ruptured Instrument Diaphragm.Instrument Replaced & Switch Tested Satisfactorily (← links)
- 05000366/LER-1979-089-03, /03L-0 on 790718:battery Pilot Cell Surveillance Not Performed on 790712 Per Tech Specs.Caused by Personnel Oversight.Satisfactory Cell Surveillance Performed on 790718 & Personnel Informed of Surveillance Schedule (← links)
- 05000366/LER-1979-079-03, /03L-0 on 790718:reactor Feedwater Flow Transmitters Were Incorrectly Calibrated,Resulting in Errors in Reactor Power Calculations.Caused by Use of Unrevised Procedures.Procedures & Data Sheets Reviewed & Corrected (← links)
- 05000366/LER-1979-091-03, /03L-0 on 790727:on 17 Occasions from 790103-0723,procedures Were Released W/O Obtaining Plant Manager Approval within 14 Days.Caused by Inadequate Tracking Method.Methods Will Be Revised (← links)
- 05000366/LER-1985-002-01, :on 850429,spurious Reactor Protection Sys (RPS) Logic Actuation Occurred Twice.Caused by Spurious Electrical Noise in intermediate-range Monitor Channel.Rps Trips Reset (← links)
- 05000366/LER-1985-017-01, :on 850430 & 0501,molded Case Circuit Breakers Trip Setpoints &/Or Breaker Locations Contrary to Specified Setpoints or Locations of Tech Spec Table 3.8.2.6-1.Caused by Inadequate Instructions.Tech Specs Amended (← links)
- 05000366/LER-1985-019-01, :on 850429,during Cold Shutdown,Reactor Water Cleanup Primary Containment Inboard Isolation Valve 2G31-F001 Isolated.Caused by Personnel Error.Resistance Temp Detectors Relabeled (← links)
- 05000366/LER-1985-030, :on 850313,determined Primary Containment Hydrogen Recombiner Functional Test Surveillance Procedure Did Not Meet Acceptance Criteria of Tech Specs. Caused by Personnel Error.Procedure Revised (← links)
- 05000366/LER-1985-016, :on 850425,during Testing of Main Steam Safety Relief Valves,Four Valves Failed to Lift within Range Required by Tech Spec 3.4.2.1.Caused by Valve Pilot Setpoint Drift.Pilot Assemblies Refurbished & Retested (← links)
- 05000366/LER-1985-011, :on 850401,main Steam Line Monitor B High Trip Setpoint Set at 3.2 Times Full Power Background.Caused by Personnel Communication Error.Setpoint Data Will Be Retrieved in Person Rather than Via Telephone (← links)
- 05000366/LER-1985-018-01, :on 850603,during Load Reduction to Take Div of Plant Svc Water Out of Svc,Turbine Trip & Subsequent Reactor Scram Received on High Moisture Separator Reheater Level Signal.Caused by High Level Trip Signal (← links)
- 05000366/LER-1985-008-01, :on 850420,reactor Water Cleanup Outboard Isolation Valve 2G31-F004 Isolated on High Differential Flow.Caused by Flow Fluctuation During Valving in of Filter Demineralizer 2A.Valve Opened (← links)
- 05000366/LER-1993-001-01, :on 930126,as-found Leakage Rate for Primary Containment Exceeded TS Limit Due to Component Degradation. Recombiner B Discharge Isolation Valve 2T49-F004B Repaired & Tested Satisfactory (← links)
- 05000366/LER-1985-015-01, :on 850415,reactor Protection Sys Logic Actuation Occurred Due to Spurious Actuation in Other Sys Channel.Caused by Intermediate Range Monitor Spurious Electrical Noise.Preventing Noise Unachievable (← links)
- 05000366/LER-1985-026, :on 850524,reactor Scram Initiated by MSIV-not-fully-open Trip from Reactor Protection Sys.Caused by Previous Closure of Upstream Isolation Valves in Nitrogen Inerting Sys.No ECCS Actuations Occurred (← links)
- 05000366/LER-1985-025, :on 850520,full Reactor Protection Sys Logic Actuation Occurred from Reactor Water Level Low Trip.Actual Trip Condition Did Not Exist.Cause Undetermined.Actuation Considered Spurious (← links)
- 05000366/LER-1993-001, :on 930101,short Circuit in Logic for MSL Isolation Valves Caused RPS Bus B to Trip & Unplanned ESF Sys Actuations.Blown Fuse in MSIV Logic Circuit Replaced & RPS Bus B Returned to Normal Power Supply (← links)
- 05000366/LER-1992-029, :on 921221,bus B of RPS Power Supply Tripped, Causing Loss of Power to Channel B of Rps,Primary Containment Isolation Sys & Offgas Radiation Monitoring Sys. Caused by Loose Wire.Loose Wire Secured (← links)
- 05000366/LER-1985-024, :on 850516,at Less than 1% Power,Personnel Discovered That RCIC Electrical Overspeed Monitor Would Not Trip,Trip & Throttle Valve.On 850518 Valve Would Not Trip Manually.Caused by Component Failure (← links)
- 05000366/LER-1992-028, :on 921218,HPCI Sys Inverter Circuit Failure Annunicator Alarmed in Main Control Room,Resulting in Inoperability of High Pressure Coolant Injection Sys.Caused by Sensing Relay Failure.Relay Replaced (← links)
- 05000366/LER-1985-014, :on 850510,seven Safety Relief Valves Serving Automatic Depressurization Sys Function Opened,Constituting ESF Actuation.Caused by Procedural Rev Deficiency.Personnel Counseled on Need for Accurate Revs (← links)
- 05000366/LER-1985-023, :on 850515,performance of Channel Logic Response Time Procedure Actuated LPCI Sys Signal.Caused by Error in Procedure Instructions.Personnel Reviewed & Corrected Procedure (← links)
- 05000366/LER-1992-025-01, :on 921119,discovered That Analog Transmitter Trip Sys Trip Units for HPCI & RCIC Not Functionally Tested, Per Ts.On 921120,discovered That PCIS Valves Also Affected. Caused by Personnel Error.Personnel Counseled (← links)
- 05000366/LER-1992-027, :on 921202,technician Reported No Flow in RB Ventilation Exhaust Sampling Sys Per TS 3.3.6.10 Due to Less than Adequate Communications & Procedure.C/A Included Revising Surveillance Procedure (← links)
- 05000366/LER-1992-026, :on 921127,unit Scrammed on Turbine Stop Valve & Turbine Control Valve Fast Closure.Caused by Main Turbine Trip on High Vibration on Bearing 6 Due to Personnel Error. Alarm Configuration Changed (← links)
- 05000366/LER-1980-057-01, /01T-0:on 800415,during Vent Header Deflector Installation & Surveillance Outage,Rhr Lpic Pump Would Not Start When LOCA Signal Was Applied to Cross Channel Start Relay.Caused by Missing Relay Wire (← links)
- 05000366/LER-1980-038-03, /03L-0:on 800328,while Performing Reactor Bldg Isolation Sys Functional Test,Drywell to Torus Dp Isolation Valves Failed to Close on Isolation Signal.Caused by Component Failure.Valve Packings Loosened & Valves Closed (← links)
- 05000366/LER-1980-023-03, While Pulling Rods in Starup Mode,Rod 46-43 Found Bypassed full-out in Rod Sequence Control Sys But Not Pulled to Presscribed Position Until Later.Caused by Personnel Error (← links)
- 05000366/LER-1980-036-03, /03L-0:on 800326,during Ilrts,While Shut Down for Surveillance Vent/Header Deflector Installation Outage, Feedwater Check Valve,Drywall Purge Inlet Isolation Valve & ILRT Verfification Flow Isolation Valve Failed Tests (← links)
- 05000366/LER-1980-030-03, /03L-0:on 800320,while Performing Turbine Control Valve Fast Closure Pressure Switch calibr,2C71-N005D Found at Less than Tech Spec Limit.Caused by Instrument Drift. Instrument Recalibr (← links)
- 05000366/LER-1992-023-01, :on 921114,employee Installed Two Jumpers in Wrong MCR Panel Resulting to Esfas.Caused by Personnel Error.C/A Included Counseling of Personnel Involved Re Need for Attention to Detail (← links)
- 05000366/LER-1992-024-01, :on 921117,personnel Error Resulted in Missed Surveillance on Standby Gas Treatment Sys.Personnel Involved Counseled (← links)
- 05000366/LER-1979-137-03, /03L-0:on 791224,during HNP-2-1050 Surveillance Checks,Drywell & Torus Temp Recorder Found Printing Erratic Temps.Caused by Cold Solder Joint on Transistor Lead Making Pen Respond Erratically.Transister Pins Resoldered to Ca (← links)
- 05000366/LER-1992-022-01, :on 921113,less than Adequate Communication & Personnel Error Resulted in Missed TS Surveillance.Personnel Counseled & Procedures Revised.Tests Satisfactorily Completed on 921113 (← links)
- 05000366/LER-1979-131-03, /03L-0:on 791206,during Normal Operation,Torus Narrow Range Level Recorder Failed Upscale,Indicating High Water Level.Caused by Leaking Vent Plug on Manifold Block Valve.Leak Corrected.Plugs Will Be Checked Regularly (← links)
- 05000366/LER-1979-138-01, /01T-0:on 791228,during HPCI Delta Pressure Functional Test,Instruments 2E41-NOO4 & 2E41-NOO5 Found Out of Tech Spec Limits.Caused by Instrument Drift.Instruments Recalibr & Successfully Tested (← links)
- 05000366/LER-1979-134-03, /03L-0:on 791214,during Fission Product Instrument Functional test,2D11-K633 Failed to Give Inoperative Response W/Mode Switch Taken Out of Operation.Caused by Bad Wiring Connection.Instrument Replaced & Tested (← links)
- 05000366/LER-1979-133-03, /03L-0:on 791211,during Normal Operation,Hpci Sys Isolated.Caused by Cold Weather & Sys Design Due to Vent Air Inlet/Outlet Temp Difference.Plant Operator Turned on HPCI Room Equipment Coolers & Sys Returned to Normal (← links)
- 05000366/LER-1979-090-03, /03L-0 on 790802:while Performing Calibr Procedure 2E41-NO12C,setpoint Exceeded Tech Specs.Caused by Instrument Drift.Instrument Recalibr & Surveillance Procedure Performed Successfully (← links)
- 05000366/LER-1992-013-02, :on 920722,confirmed That Single Failure or Misoperation of Electrical Circuit Breaker Would Result in Loss of Power to 120/208-volt Ac Distribution Panel.Caused by Inadequate Design.Design Mod Developed (← links)
- 05000366/LER-1985-012-01, :on 850409,unplanned Actuation of Reactor Protection Sys Occurred.Caused by Failure of Main Steam Line Radiation Detectors Due to Loose & Saturated Power Cables. Cables Replaced (← links)
- 05000366/LER-1985-010-01, :on 850409,certain Valves Discovered Leaking in Excess of Limits Specified in Tech Spec Sections 3.6.1.2.b & C.Valves Will Be Repaired & Tested (← links)
- 05000366/LER-1996-003-05, :on 960813,HPCI Sys Temporarily Inoperable Following ESF Actuation,Due to Physical Slip of Technician That Occurred When Technician Was Manipulating Piece of Test.Valve re-opened (← links)
- 05000366/LER-1985-013-01, :on 850411,while in Refueling Mode,Full Reactor Scram Indicated.Investigation Determined That Full Reactor Protection Sys Logic Actuation Occurred.Caused by hi-hi Signal from Source Range Monitors (← links)
- 05000366/LER-1985-005-01, :on 850329,determined That Battery Surveillance Procedure Contained Acceptance Criteria That Did Not Satisfy Tech Specs.Caused by Procedural Inadequacy.Procedure Being Revised (← links)
- 05000366/LER-1992-020-01, :on 921010,determined That Sealing Devices for 22 Spare Unit 2 Primary Containment Penetrations Did Not Meet ASME Requirements.Caused by Construction Error.Sealing Devices Will Be Replaced to Meet ASME Code (← links)
- 05000366/LER-1992-021-01, :on 921011,full RPS Actuation Signal & Group 2 PCIS Actuation Signal Received.Caused by Drawing & Personnel Error.C/A Included Reinstalling Instrument on Correct Sensing Line & Counseling Individuals Involved (← links)
- 05000366/LER-1985-009-01, :on 850319,RCIC Steam Supply Primary Containment Inboard Isolation Valve 2E51-F007 Inadvertently Closed.Caused by Personnel Error.Isolation Logic Reset & Valve Returned to Open Position (← links)
- 05000366/LER-1992-018-01, :on 920928,PCIS Valve Automatically Isolated & Tripped Operating RWCU Sys Pump.Cause Unknown.Fuse Replaced & Sys Returned to Service (← links)
- 05000366/LER-1992-019-01, :on 920928,personnel Notified That Test Results for SRV Exhibited Drift in Mechanical Setpoint Due to corrosion-induced Bonding.C/A Includes Installing Sys That Will Provide Electrical Signals to SRV (← links)
- 05000366/LER-1996-002-03, :on 960626,HPCI Sys Turbine Stop Valve Failed to Open.Caused by Failed Oil Pump Discharge Filter.Flushed Mechanical Trip Piston,Drained,Cleaned and Added New Oil to Reservior & Changed Oil Pump Discharge Filters (← links)
- 05000366/LER-1984-030, :on 841115,29 & 850313,determined That Listed Functional Tests of Plant Equipment Not Performed Per Tech Specs.Caused by Personnel Error.Procedures Will Be Revised (← links)
- 05000366/LER-1992-017-01, :on 920922,NRC Inspectors Observed CR Operator Inattentive to Duties While Maintaining Designated Communication Link to Refueling Platform.Caused by Personnel Error.Operator Removed from Licensed Duties (← links)
- 05000366/LER-1992-016-01, :on 920922,SGTS Trains a & B Automatically Initiated & Secondary Containment Isolation Dampers Automatically Isolated.Caused by Personnel Performing Radiography on Weld.Cr Personnel Notified (← links)
- 05000366/LER-1992-015-01, :on 920916,manual Scram Initiated as Conservative Action Due to Leak Discovered in electro-hydraulic Sys Control Fluid Piping.Caused by through-wall Crack.Cracked Pipe Replaced (← links)
- 05000366/LER-1992-012-01, :on 920727,determined That Requirements of TS Section 4.6.5.1 Not Met for Spent Fuel Shipping Cask Handling Activities.Caused by Misinterpretation of TS Sr. Ltr Issued to Correct TS Interpretation (← links)
- 05000366/LER-1992-011-01, :from 920712-19,station Svc Battery 2A & Battery Chargers 2B & 2C Inoperable for More than 2 H.Caused by Personnel Error & Improper Alarm Setpoint.Personnel Counseled & Alarm Setpoint Changed (← links)
- 05000366/LER-1984-037, :on 841218,airlock Leaked in Excess of Tech Spec Limits.Caused by Loose Packing Follower on Inner Door Shaft Seal.Seal Repaired (← links)
- 05000366/LER-1984-033, :on 841213,determination Made That Personnel Failed to Submit LERs Re 840930 & 1117 Reactor Scrams,Per Deficiency Control Sys Procedure HNP-444.Personnel Counseled to Complete Deficiencies in Timely Manner (← links)
- 05000366/LER-1996-001-03, :on 960508,safety Limit Min Critical Power Ratio for Unit 2 Cycle 13 Found Not Conservative.Caused by GE Methodology Used to Calculate Generic SLMCPR Did Not Yield Conservative Value.Olmcpr Increased (← links)
- 05000366/LER-1984-035, :on 841213,RCIC Declared Inoperable When Inboard Steam Supply Isolation Valve 2E51-F007 auto-isolated.Caused by Failed Card (Electronic Circuit Board).Failed Card Replaced (← links)
- 05000366/LER-1985-007-01, :on 850210,reactor Water Cleanup Inboard Isolation Valve 2G31-F001 Isolated Due to False Trip Signal from Inlet Temp Instrument 2G31-N661A.Caused by Poor Connection Between Trip Card & Edge Connector (← links)
- 05000366/LER-1984-026, :on 841004 & 07 Reactor Scrammed Due to Turbine Trip from Moisture Separator Reheater High Level Trip Instrumentation Actuation.Caused by Varying Ref Leg Level on Level Transmitters (← links)
- 05000366/LER-1984-010, :on 840924,reactor Water Cleanup (RWCU) Inboard & Outboard Isolation valves,2G31-F001 & 2G31-F004, Respectively,Isolated Due to High Differential Flow Signal. Caused by RWCU Demineralizer Not Full (← links)
- 05000366/LER-1984-022, :on 841006,motor Leads Disconnected to RHR Svc Water Pumps 1E11-COO1B & 1E11-COO1D.Caused by Personnel Error.Personnel Counseled (← links)
- 05000366/LER-1985-006, :on 850124,calibr Head Correction Data for RCIC Steam Line Differential Pressure Transmitters 2E51-N057A & 2E51-N057B Determined Incorrect.Caused by Error in Procedure.Rcic Declared Inoperable (← links)
- 05000366/LER-1984-024, :on 841011,reactor Water Cleanup Outboard Isolation Valve 2G31-F004 Isolated.Caused by 1/2 Group Isolation from Channel B of Reactor Protection Sys.Power Supply Breaker Reset (← links)
- 05000366/LER-1985-004, :on 850121 & 23,ESF Actuation Occurred.Caused by Reactor Protection Sys B Motor Generator Set Tripping Due to Failed Voltage Regulator.Regulator Replaced & Adjusted. Motor Generator Tested & Returned to Svc (← links)
- 05000366/LER-1985-001-01, :on 850119,reactor Scrammed.Caused by Failure of Inboard Msiv.Procedure HNP-2-3111 Revised to Allow 2-minute Wait Between Operating MSIV Cycle to Prevent Isolation of Drywell Pneumatic Sys (← links)
- 05000366/LER-1984-018-01, :on 841002,util Informed That Johnston Pump Co Standby Svc Water Pump 2P41-C002 Might Not Withstand DBE Because of Incorrect Assumption in Calculation Stress Analysis.Split Ring Removed (← links)
- 05000366/LER-1984-010-01, :on 840908,reactor Water Cleanup Inboard & Outboard Isolation Valves Isolated by High Differential Flow Signal.Caused by Demineralizer Not Being Full When Valved. Sys Returned to Svc (← links)
- 05000366/LER-1984-023, :on 840811,LOCA Loading Timers Reset Clutch Coils for 2F,2E & 2G Emergency Busses Burned Out.Caused by LOCA Timer Failure to Reset Automatically.Coils Replaced & Returned to Svc (← links)
- 05000366/LER-1984-017, :on 840918,diesel Generator 2R43-S001A Failed to Start Properly.Caused by Failure to Increase Frequency of Start Tests & Blown Fuse in Field Flashing Circuit.Fuse Replaced & Personnel Counseled (← links)
- 05000366/LER-1984-018, :on 841002,Johnston Pump Co Informed Util That Standby Svc Water Pump 2P41-C002 Might Not Withstand Dbe. Caused by Seismic Analysis Calculation Error.Approved Design Change Request Implemented & Tested (← links)
- 05000366/LER-1984-021, :on 840921,unit Received Reactor Scram Due to Incomplete Opening of Msiv.Caused by Nitrogen Leak on Pneumatic Sys Solenoid Valve for Inboard MSIV 2B21-F022D. Blown Gasket Replaced (← links)
- 05000366/LER-1984-019, :on 840924,outboard Reactor Water Cleanup Sys (RWCU) Primary Containment Isolation Valve 2G31-F004 Closed & RWCU Pump 2G31-C001A Tripped.Caused by Failure of Two ATTS Master Trip Units.New Units Installed (← links)
- 05000366/LER-1984-007-01, :on 840908,reactor Water Cleanup Inboard Isolation Valve 2G31-F001 Isolated Due to High Differential Temp in Pump Room.Caused by Inboard Seal Leak on Reactor Water Cleanup Pump 2A.Pump Repaired (← links)
- 05000366/LER-1985-003, :on 850107,Group 5 Isolation Occurred from Reactor Water Cleanup High Differential Temp.Cause Attributed to Short Circuit During Corrective Maint on Resistance Temp Detector (← links)
- 05000366/LER-1992-014-01, :on 920818,personnel Error Resulted in Mispositioned Valve & Engineered Safety Feature Actuation. Procedure 34SO-G31-003-2S Revised (← links)
- 05000366/LER-1984-038, :on 841224,drywell Floor Drain Sump Pumps Failed & Water from Drywell Floor Drain Sumps Overflowed Into Equipment Drain Sump.Caused by Broken Drive Couplings on Each Pump.Pump Couplings Replaced (← links)
- 05000366/LER-1992-008-01, :on 920620,RWCU Isolation Signal Was Received Resulting in Group 5 Primary Containment Isolation Sys Actuation.Caused by Component Failure.Components Replaced & Controller Was Calibrated Satisfactorily (← links)
- 05000366/LER-1992-007-02, :on 920612,discovered Reactor Water Cleanup Sys Leak Which Resulted in Engineered Safety Actuation.Caused by Failed Gasket.Leak Repaired & Gasket Replaced (← links)
- 05000366/LER-1984-036, :on 841129,scram Occurred on Spurious Reactor Low Water Trip Signal.Caused by Personnel Opening SPDS Water Level Transmitter Equalizing Valve Before Closing Isolation Valve.Personnel Counseled (← links)
- 05000366/LER-1992-006-02, :on 920522,vol of Liquid Radwaste Discharged W/O Monthly/Quarterly Composite Sample Having Been Updated. Caused by Personnel Errors.Responsible Personnel Counseled (← links)
- 05000366/LER-1984-032, :on 841105,plant Personnel Noted Required Deficiency Rept Re Inadequate Bolting Matl for RHR Svc Water Pump Columns Not Written.Plant Notified of Incorrect Matl on 841015 (← links)
- 05000366/LER-1985-007, :on 850210 & 24,reactor Water Cleanup Inboard Isolation Valve 2G31-F001 Isolated as Result of False Trip Signal.Caused by Bad Connection Where Trip Card 2G31-N661A Plugged Into Connector (← links)
- 05000366/LER-1984-029, :on 840810,sliding Fire Door for 600-volt Station Svc Switchgear Room 2-C Obstructed by Door of Switchgear Cabinet 2H21-P051.Caused by Personnel Error. Personnel Cautioned (← links)
- 05000366/LER-1984-031, :on 841031,reactor Water Cleanup Inboard Isolation Valve 2G31-F002 Isolated Due to High Equipment Room Temp.Caused by Pump Shaft Seal & Two Pump Vent Valves Leaking.Seal Replaced & Valves Repaired (← links)
- 05000366/LER-1984-025, :on 841025,during Insp of RCIC Trip & Throttle Valves,Valve Yoke Arm Found Broken Off.Caused by Loose Setscrew.Yoke Arm & Setscrew Replaced (← links)
- 05000366/LER-1992-010-02, :on 920515,Tech Specs Violated Due to Condensation in Instrument Sensing Lines.Caused by Improper Installation of Instrument Lines.Instrument Readings Will Be Monitored Until Lines Can Be Rerouted (← links)
- 05000366/LER-1992-009-02, :on 920625,personnel Inadvertent Manipulation of Wrong Breaker Control Resulted in Automatic Reactor Scram.Personnel Counseled & IRMs Will Be Tested During Next Refueling Outage Scheduled for 920916 (← links)
- 05000366/LER-1979-016-03, /03L-0 on 790127:overvoltage Trip Setpoint for Reactor Protection Sys Motor Generator Set B Found at 125.6 Volts AC Below Tech Specs Min.Caused by Setpoint Drift (← links)
- 05000366/LER-1984-020, :on 840821,unplanned Full Reactor Protection Sys Actuation Occurred.Caused by Opening Links When Turbine Off Line.Procedure Being Revised (← links)
- 05000366/LER-1995-003-03, :on 950902,reduction in Main Condenser Vacuum Prompted Manual Reactor Shutdown.Vented Waterbox,Returned Cooling Tower to Svc & Briefed Operations Shift Personnel on Event (← links)
- 05000366/LER-1984-016, :on 840815,spurious LOCA Signal Initiated Four RHR Pumps,Two Core Spray Pumps,Three Diesel Generators & HPCI & Rcic.Caused by Personnel Error in Completing Procedure Data Package (← links)
- 05000366/LER-1984-013-01, :on 840812,reactor Water Sample Not Obtainable Nor Analyzable for Conductivity,Per Tech Specs,Due to Failed Valve in Sample Line.Caused by Component Failure. Valve Repaired (← links)
- 05000366/LER-1984-014, :on 840811,reactor Recirculation Pump Auto Trip Relays 2B21-K43 & 2B21-K43D Discovered Removed from Sockets & Placed in Bottom of Control Panel.Caused by Personnel Error.Relays Reinstalled in Sockets (← links)
- 05000366/LER-1984-015-01, :on 840814,surveillance Required by Tech Spec Section 4.7.8.6 Not Performed within Applicable Time Constraints.Caused by Personnel Error.Personnel Instructed (← links)
- 05000366/LER-1984-012, :on 840809,trip Signal to Reactor Water Cleanup Isolation Valve 2G31-F004 Caused Valve to Close.Caused by Failure of Fenwal Type 56100 Temp Switch.Switch Repaired & Recalibr (← links)
- 05000366/LER-1992-005-01, :on 920419,loss of Power to Rpa Bus B & ESF Sys Actuations Occurred.Caused by Component Failure.Failed Relay Replaced & Returned to Svc (← links)
- 05000366/LER-1995-010, :on 951206,partial Group 1 PCIS Isolation Signal on MSL High Radiation Received Due to Component Failure.Flow Rate Monitor Replaced & New Monitor & FCV Controller Verified to Be Functioning Properly (← links)
- 05000366/LER-1992-004-01, :on 920316,when Fuel Oil Transfer Pump C001C Removed,Edg Left W/No Operable Fuel Oil Transfer Pump.Caused by Personnel Error Due to Inadequate self-verification. Personnel Counseled & Trained (← links)
- 05000366/LER-1995-009, :on 951114,remote Shutdown Panel Found Degraded Due to Inadequate Testing & Design.Deficient Conditions Repaired/Corrected & Improved TS-required Testing Completed (← links)
- 05000366/LER-1984-006-01, :on 840716,control Rod Hoist Operation Performed W/O Demonstration Operation of Hoist Interlock.All Hoist Use Suspended.Procedure Revised (← links)
- 05000366/LER-1995-008, :on 951102,RV Inventory Loss Resulted in Unplanned ESF Sys Actuations.Revised Procedures & Drawings, Corrected Label,Reset LS-14,checked Limit Switches & Tested Valve Interlock Logic (← links)
- 05000366/LER-1995-006-02, :on 951030,personnel Error Resulted in Automatic Start of EDG 1B.Labeled PT Compartment Doors & Training Test Engineers on Event (← links)
- 05000366/LER-1984-009-01, :on 840711,unplanned Automatic Activation Logic of More than One ESF Occurred.Caused by Defective Rev to HNP-2-3191.Procedure Revised to Prevent Unplanned Logic Actuation (← links)
- 05000366/LER-1995-007, :on 951101,ESFs Actuated as Result of Trip of RPS Power Supply.Caused by Dirty Potentiometer in Feedback Sensing Circuit of Voltage Regulator.Voltage Regulator Replaced & Minor Design Change Installed (← links)
- 05000366/LER-1995-005-03, :on 951020,personnel Error Resulted in Automatic Initiation of Edgs.Counseled & Retrained Involved Individual Re self-verification Techniques (← links)
- 05000366/LER-1995-004-03, :on 951009,excessive Leakage Was Identified on Secondary Containment Bypass Valves.Caused by Degradation of Valves.Replaced One Valve W/New Valve & Restored Other to Zero Leakage (← links)
- 05000321/LER-1980-001-01, /01T-0:on 800103,while Performing Maint on RHR LPCI Injection Valve,Clevis Pin Found Missing from Strut on Drywell Penetration Restraint.Caused by Improper Installation.New Clevis Pin Installed (← links)