Pages that link to "05000272/LER-2002-001, Re Non-Conservative Steam Generator Low-Low Level Setpoint"
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The following pages link to 05000272/LER-2002-001, Re Non-Conservative Steam Generator Low-Low Level Setpoint:
Displayed 10 items.
- 05000272/LER-2002-001 (redirect page) (← links)
- 05000272/LER-2010-005 (← links)
- 05000272/LER-2002-009 (← links)
- 05000272/LER-2001-008 (← links)
- 05000272/LER-2001-006 (← links)
- 05000272/LER-2001-005 (← links)
- 05000272/LER-2001-004 (← links)
- 05000272/LER-2001-003 (← links)
- 05000272/LER-2001-002 (← links)
- 05000272/LER-2001-001 (← links)
- 05000272/LER-1982-046, Forwards LER 82-046/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-040, Forwards LER 82-040/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-039, Forwards LER 82-039/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-038, Forwards LER 82-038/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-032, Forwards LER 82-032/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-036, Forwards LER 82-036/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-037, Forwards LER 82-037/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-035, Forwards LER 81-035/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-034, Forwards LER 82-034/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1980-004, Forwards LER 80-004/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-011, Forwards LER 82-011/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-120, Forwards LER 81-120/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-116, Forwards LER 81-116/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-033, Forwards LER 82-033/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-031, Forwards LER 82-031/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-025, Forwards LER 82-025/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-030, Forwards LER 82-030/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-075, Forwards LER 82-075/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-072, Forwards LER 82-072/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-070, Forwards LER 82-070/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-068, Forwards LER 82-068/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-065, Forwards LER 82-065/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-051, Forwards LER 82-051/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-067, Forwards LER 82-067/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-019, Forwards LER 81-019/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-066, Forwards LER 82-066/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-071, Forwards LER 82-071/04L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-074, Forwards LER 82-074/04L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-073, Forwards LER 82-073/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-062, Forwards LER 82-062/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-063, Forwards LER 82-063/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-058, Forwards LER 82-058/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-054, Forwards LER 82-054/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-055, Forwards LER 82-055/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-052, Forwards LER 82-052/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-057, Forwards LER 81-057/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-009, Forwards LER 81-009/01X-2.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-058, Forwards LER 81-058/04L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-048, Forwards LER 82-048/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-049, Forwards LER 82-049/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-047, Forwards LER 82-047/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-043, Forwards LER 82-043/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-060, Forwards LER 81-060/99X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-005, Forwards LER 82-005/01X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-007, Forwards LER 83-007/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-006, Forwards LER 83-006/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-008, Supplemental LER 82-008/03X-1:on 820126,boric Acid Concentrations in Boric Acid Storage Tanks 11 & 12 Found Below Tech Spec Limit.Caused by Dilution of Concentration by Flushing Water in Tank Following Maint.Boric Acid Added (← links)
- 05000272/LER-1982-002, Supplemental LER 82-002/01X-2:on 820119,during Surveillance, Indications of Tube Thinning Detected by Eddy Current Exam. Tubes Above 30% Degradation Plugged.Tube R44C62 Sent to Westinghouse for Chemical & Metallurgical Testing (← links)
- 05000272/LER-1982-087, Forwards LER 82-087/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-088, Forwards LER 82-088/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-064, Forwards LER 82-064/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-015, Forwards LER 83-015/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-010, Forwards LER 83-010/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-011, Forwards LER 83-011/01T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-014, Forwards LER 83-014/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-086, Forwards LER 82-086/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-085, Forwards LER 82-085/01T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-082, Forwards LER 82-082/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-080, Forwards LER 82-080/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-079, Forwards LER 82-079/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-076, Forwards LER 82-076/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-004, Supplemental LER 82-004/03X-1:on 820108,charging Pump 13 Declared Inoperable Due to Component Cooling Water Sys Being Tagged Out for Planned Maint.On 820109,positive Reactivity Change Found in RCS Boron Concentration (← links)
- 05000272/LER-1982-009, Supplemental LER 82-009/03X-1:on 820118 & 25,Cardox Fire Suppression Sys for 1A,1B & 1C Diesel Generator Areas & Fuel Oil Storage Area 12 Inoperable for More than 14 Days.Caused by Sys in Manual Mode Due to Maint Outage (← links)
- 05000272/LER-1982-042, Supplemental LER 82-042/03X-1:on 820628,valves 12AF10 & 12AF86 Discovered Open.Caused by Personnel Negligence in Failure to Notice That Chains on Valves Improperly Installed.Valve Operation & Tagging Lesson Plans Revised (← links)
- 05000272/LER-1982-077, Forwards LER 82-077/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1979-068, Supplemental LER 79-068/03X-1:on 791018,safety Injection Pump Motor 12 Tripped on Overcurrent.Caused by Impeller Locknuts Improperly Secured at Mfg Facility.Pumps Reassembled Using Locktite Compound (← links)
- 05000272/LER-1983-062, Supplemental LER 83-062/99X-1:on 831122,during Testing on Seismic Instrumentation,Triaxial Time History Accelograph Did Not Respond as Required.Caused by Detector Failure. Accelerometer Replaced (← links)
- 05000272/LER-1981-059, Supplemental LER 81-059/01X-01:on 810616,during Initial Testing,Auxiliary Feedwater Pump 23 Turbine Steam Supply Check Valves 21MS46 & 23MS46 Found Damaged Internally.Caused by Steam Flow Sys Oscillations (← links)
- 05000272/LER-1976-002, Supplemental LER 76-002/01T:on 760822,Conde Milking Machine Co Model MX-16A (Containment Air Sample Pump for Air Particulate & Gaseous Radiation Monitors R11A,R12A & R12B) Failed.Caused by Bearing or Shaft Seal Seizure (← links)
- 05000272/LER-1976-004, Supplemental LER 76-004/03L:on 760902,during Transfer of 1A Vital Instrument Bus to Alternate Power source,1RH2 Closed,Resulting in Loss of RHR Flow to Rcs.Caused by tagged-open Supply Breakers (← links)
- 05000272/LER-1976-022, Updated LER 76-022/03L:on 761211,steam Generator 13 Level Transmitter LT-538 Failed.Cause Undetermined.Vendor Failed to Analyze Transmitter Before Repairs Made (← links)
- 05000272/LER-1976-030, Updated LER 76-030/03L:on 761228,during Sample Analysis of Boric Acid Storage Tanks 11 & 12,boron Concentration Noted Low.Cause Unknown.Chemical Analysis After Batching Confirmed Findings (← links)
- 05000272/LER-1982-093, Forwards LER 82-093/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-023, Supplemental LER 83-023/01X-1:on 830602,notification Received from Westinghouse of Potential Unreviewed Safety Question Re Operation at Full Power Following Extended Reduced Power Operation.Procedures Implemented (← links)
- 05000272/LER-1983-004, Forwards LER 83-004/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-005, Forwards LER 83-005/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-003, Forwards LER 83-003/04L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-008, Supplemental LER 83-008/03X-1:on 830311,pressurizer Code Safety Valves 1PR3,1PR4 & 1PR5 Exceeded Lift Set Pressure Range & Had Heavy Seat Leakage.Partly Caused by Difference in Test Vs Actual Operating Conditions (← links)
- 05000272/LER-1983-009, Forwards LER 83-009/99X-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-121, Supplemental LER 81-121/03X-1:on 811228,svc Water Leak in Spool Piece Discovered Between Valves 12SW57 & 58.Design Change Package 1EC-0504 Implemented to Replace Piece W/Stainless Steel for Improved Corrosion Resistance (← links)
- 05000272/LER-1983-018, Forwards LER 83-018/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-017, Forwards LER 83-017/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-016, Forwards LER 83-016/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-041, Forwards LER 82-041/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-015, Forwards LER 82-015/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-017, Forwards LER 82-017/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-018, Forwards LER 82-018/01T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-013, Forwards LER 83-013/99T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-081, Supplemental LER 82-081/01X-1:on 821104,16 1,000-kip Steam Generator Snubbers Found Out of Spec on Bleed Test & Six Snubbers Failed Acceleration Test.Caused by Flattened Piston Seal Rubber Matl Due to Aging.Seals Rebuilt (← links)
- 05000272/LER-1982-045, Forwards Corrected LER 82-045/04L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-050, Forwards Corrected LER 82-050/04L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-007, Forwards LER 82-007/01X-2 (← links)
- 05000272/LER-1981-110, Forwards LER 81-110/03X-2.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-107, Forwards LER 81-107/03X-2.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-052, Forwards LER 81-052/03L-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-2024-001, Pressure Boundary Leakage Through a Reactor Coolant Pump Thermal Barrier Heat Exchanger (← links)
- 05000272/LER-1986-016, :on 860805,steam Generator Feed Pump Tripped on Overspeed Trip.Caused by Failed Diode.Diode Replaced.All Four Steam Generator Feed Pump Electrical Control Panels Completely Refurbished (← links)
- 05000272/LER-1986-017, :on 860729,Fire Door C-8-1 Blocked Open for Maint of Component Cooling HX 11.Action Statement Not Issued.Caused by Error in Judgement Re Proper Classification of Fire Doors.Doors Will Be Clearly Marked (← links)
- 05000272/LER-1986-020-01, :on 861108,Tech Spec Surveillance 4.7.7.1.A Not Completed within Required Time.Caused by Personnel Error. Shift Supervisors Counseled Re Failure to Take Necessary Steps to Allow Performance of Surveillance (← links)
- 05000272/LER-1985-007, :on 850708,waste Gas Decay Tank 14 Depressurized Through Plant Vent.Caused by Seat Leakage Through Valve 1WG41 & Improper Testing of Solenoid Valves. Leak Test Procedure Revised (← links)
- 05000272/LER-1986-016-01, :on 860805 & 06,steam Generator Feed Pump 11 Tripped & Feed Flow/Steam Flow Mismatch Alarm Occurred, Respectively.Caused by Diode Failure & Accidental Grounding of Circuit.Diode Replaced.Wiring Relocated (← links)
- 05000272/LER-1986-018-01, :on 860806,Limitorque Motor Valve Operators W/O Environ Qualified Wires Discovered.Caused by Insufficient Control of Wiring During Operator Assembly. Wiring Replaced.Stored Wires Will Be Inspected (← links)
- 05000272/LER-1986-019-01, :on 861001,two 2-inch Conduit Penetrations in Svc Water Intake Structure Fire Barrier Wall Discovered Improperly Sealed Per Tech Spec 3.7.11.Cause Undetermined. Penetration Sealed.Investigation Continuing (← links)
- 05000272/LER-1986-017-01, :on 860729,Fire Door C-8-1 Blocked Open to Allow Maint on Component Cooling HX 11.Caused by Error in Judgement Re Proper Classification of Fire Door.Fire Doors Will Be Clearly Marked (← links)
- 05000272/LER-1982-007-01, /01X-2:on 820211,during Design Review,Discovered That Check Valves 1AF71 & 1AF72 & Associated Piping Not Seismically Analyzed & Protected.Protective Steel Structures Provided Off Seismic Wall (← links)
- 05000272/LER-1986-021-01, :on 861112,discovered That Tech Spec Surveillance 4.3.3.9 for Quarterly Functional Test of Noble Gas Activity Monitor Not Performed within Required Time Frame.Caused by Personnel Error (← links)
- 05000272/LER-1986-005, :on 860218,Tech Spec 3.8.1.1.a Requiring Surveillance of Diesel Generators 13 & 1C While 1A Tagged for Maint,Violated.Caused by Personnel Error.Operability of Generators Verified.Personnel Counseled (← links)
- 05000272/LER-1985-012, :on 851006,turbine Tripped Due to False Low Condenser Vacuum Signal.Caused by Troubleshooting Techniques & Sys Design.Instrument Lines Isolated from Trip Blocks & lo-lo Vacuum Alarms Removed (← links)
- 05000272/LER-1986-001, :on 860116,reactor Trip Occurred Following Inadvertent Deenergization of Vital Bus 1A.Caused by Direct Shock to Relay.Failed Power Supply Replaced.Svc Qualification of Relays Being Investigated (← links)
- 05000272/LER-1999-001-01, :on 990228,reactor Scram Resulted in Turbine Trip.Caused by Personnel Error.Revised Lesson Plans to Explicitly Demonstrate Manner in Which Valve Functions. with (← links)
- 05000272/LER-1986-015-01, :on 860708,discovered That Raychem Splices W/Heat Shrinkable Incorrectly Installed on Transmitters,Per IE Info Notice 86-053.Caused by Misunderstanding of Environ Qualification Requirement (← links)
- 05000272/LER-1986-011-01, :on 860627,continuous Fire Watch Not Maintained for Inoperable Fire Door,Contrary to Tech Specs.Caused by Personnel Error.Hourly Fire Watch Posted & Info Directive AP-25 Will Be Issued (← links)
- 05000272/LER-1986-013-01, :on 860612,feedwater Heater Control Valve 13C Closed,Resulting in Loss of Feedwater Heater Train & Subsequent Tripping of Steam Generator Feedwater Pump 1. Caused by Personnel Error (← links)
- 05000272/LER-1986-014-01, :on 860613,turbine/reactor Trip Occurred Due to Problem W/Svc Water Valve on Inservice Cooler.Caused by Inadequate Indication of Completely Full & Vented Cooler. Pressure Gauges Will Be Installed on Coolers (← links)
- 05000272/LER-1986-012-01, :on 860606,reactor Trip Initiated by Turbine Trip Due to Main Generator Protection Circuitry.Caused by Internal Fault in Auxiliary Power Transformer (Apt).Apt Removed & Repaired by Mfg (← links)
- 05000272/LER-1996-005, :on 971224,inadequate TS Testing of Containment Airlock Door Gasket Leakage Was Noted.Caused by Lack of Adequate Controls & Understanding of Development. Appropriate Procedures Reviewed (← links)
- 05000272/LER-1986-010-01, :on 860512,turbine/reactor Trip from Approx 95% Power Occurred.Caused by Loss of Both Steam Generator Feedwater Pumps & Failure of Manual Restraining Device.Leads Removed (← links)
- 05000272/LER-1986-009, :on 860425,oxygen Content of Waste Gas Decay Tanks Exceeded Allowable Limits.Caused by Procedural Inadequacy.Operating Instructions OI-II-8.3.4 & OI-II-11.3.4 Revised (← links)
- 05000272/LER-1985-012-01, :on 851006,turbine Tripped Due to Shift Supervisor Opening Vent Valve for Alarm Sensor.Caused by Troubleshooting Techniques & Sys Design.Senior Shift Supervisor Counseled (← links)
- 05000272/LER-1986-007, :on 860408,discovered That Several motor-operated Valves Inside Containment Not in Compliance w/10CFR50.49 Due to T-drains Not Being Installed.Caused by Design Change Package Omissions (← links)
- 05000272/LER-1984-021, :on 841014,component Cooling Water Return Isolation Valve from Reactor Coolant Pump Thermal Barriers Closed.Caused by Failure of Motor for Limitorque Operator. Motor & Motor Overloads for 1CC131 Replaced (← links)
- 05000272/LER-2020-002, Unit 2 RHR Availability for Emergency Core Cooling in Mode 4 (← links)
- 05000272/LER-1986-006, :on 860220,reactor Trip Occurred When Steam Generator Water Level Signal Drifted Closed.Caused by Broken Wire to Solenoid Valve Damaged During Installation. Connections on All Subj Valves Replaced (← links)
- 05000272/LER-1986-002, :on 860131,failure to Implement Portions of Inservice Testing Program Discovered.Caused by Inadequate Mgt Attention to Program Requirements.Required Testing of Valves in ASME Sections 1-10 Performed (← links)
- 05000272/LER-1986-003, :on 860131,reactor Trip Occurred on Steam Generator 11 Due to Valve Partially Closing & Failure to Respond to Manual Control.Caused by Leak on Valve 11BF40 Positioner.Valve Replaced (← links)
- 05000272/LER-1981-106-03, /03X-1:on 811029,14 Fire Doors Declared Inoperable,Following Insp.Caused by Improper Operation by Personnel & Inadequate attention.Seventy-nine Doors & 49 Frames Replaced.Frames Repaired & Installed (← links)
- 05000272/LER-1985-013-02, :on 851122,equipment Operator Inadvertently Deenergized Control Power for Centrifugal Charging Pump 12 Resulting in Loss of Two ECCS Subsystems.Caused by Operator Error.Operator Counseled (← links)
- 05000272/LER-2020-001, Station, Unit 1, Manual Reactor Trip and Auxiliary Feed Water System Actuation (← links)
- 05000272/LER-1985-011-01, :on 850922,unidentified RCS Leakage Exceeded Allowable Tech Spec Limit.Caused by Operator Error & Lack of Procedure.Steam Leaks Repaired,New Procedure Developed & Personnel Counseled (← links)
- 05000272/LER-1985-009-01, :on 850913,fire Watch Left Post While Automatic Actuation Feature for Diesel Low Pressure Fire Suppression Sys Defeated for Diesel Maint.Caused by Poor Coordination Between Maint & Operations Shift Supervisors (← links)
- 05000272/LER-1985-011, :on 850922,review of Operational Leakage Event Revealed That Tech Spec Action Statement 3.4.6.2.b Not Entered as Required by Procedures.Caused by Operator Error. Supervisors Involved Counseled (← links)
- 05000272/LER-1985-008-01, :on 850729,containment Sump in-leakage Rate Reached 1.3 Gpm.Caused by Leaking Svc Water from Pipe Plug Located on Containment Fan Coil Unit 11 Motor Cooler.Leaking Pipe Plug Tightened (← links)
- 05000272/LER-1985-007-01, :on 850708,waste Gas Decay Tank Depressurized Through Plant Vent During Leak Check.Caused by Seat Leakage Through Vent Control Valve 1WG47 Being Used as Isolation Valve.Leak Test Procedure Revised (← links)
- 05000272/LER-1985-010-01, :on 850919,discovered That Inservice Waste Gas Decay Tank Not Being Continuously Sampled for Oxygen Content as Required by Tech Specs.Caused by Incorrect Valve Lineup on 850915 Due to Personnel Error (← links)
- 05000272/LER-1985-005-01, :on 850701,discovered That Gas Releases Performed Since 850412 Establishment of Alternate Flow Path for Sampling Waste Decay Tanks Not Representative of Contents of Tanks.Sampling Procedures Revised (← links)
- 05000272/LER-1984-008, :on 840309,during Refueling Outage,Radiography of 16 Welds in Svc Water Piping Associated W/Component Cooling HX 12 Revealed Possible Indications in 9 Welds. Caused by Low Velocity Water in Piping (← links)
- 05000272/LER-1984-022, :on 841019,changing Header Stop Valve 1CV68 Retested Unsatisfactorily.Possibly Caused by Boundary Valve Leakage.Type C Leak Rate Testing Procedure Amended (← links)
- 05000272/LER-1985-006, :on 850320,containment Sump in-leakage Identified as Svc Water Leak on Containment Fan Coil Unit 13 Motor Cooler.Caused by Leak from Head Gasket.Motor Cooler Replaced.Reported Per IE Bulletin 80-24 (← links)
- 05000272/LER-1984-011, :on 840503,fire Suppression Pump 2 Removed from Svc for 18-month Surveillance.Discharge Valve 2FP13 Could Not Be Opened When Returning Pump to Svc on 840509.Caused by Disc/Stem Separation.Pump in Svc on 840510 (← links)
- 05000272/LER-1985-002, :on 840213,two Containment Pressure Relief Operations Not Performed in Accordance W/Tech Specs. Caused by Personnel Error.Personnel Disciplined (← links)
- 05000272/LER-1985-001-01, :on 850205,discovered Low Suction Pressure Trip Circuits for Auxiliary Feedwater Pumps Did Not Meet Single Failure Criteria.Caused by Design Error.Safety Evaluation Done.Circuits to Be Redesigned (← links)
- 05000272/LER-1984-029, :on 841231,reactor Trip Occurred Due to Steam Generator 11 Steam Flow/Feed Mismatch,Coincident W/Low Steam Generator Water Level.Caused by Partial Closure of Valve 11BF19.Valve Stroke Tested (← links)
- 05000272/LER-1984-028, :on 841223,reactor Trip Initiated.Caused by Technician Error While Reducing Power Range High Flux Trip Setpoints.Corrective Actions Restricted to Individual Responsible for Occurrence (← links)
- 05000272/LER-1979-020-03, /03L-0 on 790225:pressurizer Level Channel II Was Declared Inoperable.Caused by non-linearity of Strain Gauge in Level Sensor Transmitter.Strain Gauge Replaced Along W/ Zero & Span Potentiometers.Transmitter Recalibrated (← links)
- 05000272/LER-1984-026, :on 841107,Tech Spec Action Statement Not Followed Verbatim After Seat Leakage on Main Steam Stop Valve Bypass Valve 11MS18 Resulted in Rupture of West Low Pressure Turbine Rupture Disk 12 (← links)
- 05000272/LER-1984-025, :on 841106 & 11 Malfunctions of Turbine electro-hydraulic Control Sys (Ehcs) Resulted in Reactor Trips.Caused by Rapid Load Rejection.Extensive Testing of Ehcs Performed.Components Replaced (← links)
- 05000272/LER-1984-027, :on 841118,svc Water Leaks Discovered on Containment Fan Coil Units 14 & 11.Caused by External Surface Corrosion of Piping.Vent Lines,Flanges,Valves & Piping Replaced (← links)
- 05000272/LER-1985-003, :on 850214,turbine Stop Valve 12MS28 Limit Switch Malfunctioned,Causing Closed Signal to Solid State Protection Sys Train B.Caused by Personnel Judgement Error. Channel Repaired & Personnel Counseled (← links)
- 05000272/LER-1984-005, :on 840224,reactor Trip Occurred from 100% Power.Caused by Failure of Coil B31 in Turbine Generator. Generator Rewound Using Improved Conformable Layer of Impregnated Resin (← links)
- 05000272/LER-1984-007, :on 840306,during Refueling Outage,Check Valve 1SA119 Located Inside Containment & in Containment Station Air Supply Line,Exhibited Excessive Leakage Rate.Corroded Seat Repaired (← links)
- 05000272/LER-1984-023-01, :on 841022,during Initiation of Turbine Trip, Reactor Trip Occurred Due to Loss of P-7 Permissive. Turbine Impulse Pressure Transmitter PT-506 Replaced (← links)
- 05000272/LER-1984-022-01, :on 841018 & 19,Mode 4 Operation Entered W/Containment Isolation Valves 1CV68 & 1CV69 Inoperable. Caused by Personnel Error.Type C Leak Rate Test Procedural Change Implemented (← links)
- 05000272/LER-1984-024-01, :on 841020,steam Generator Feedwater Regulation Isolation Valves Closed.Caused by Spurious Feedwater Actuation Signal.Testing Performed (← links)
- 05000272/LER-1984-021-01, :on 841014,during Reactor Startup,Containment Isolation Valve 1CC131 Closed.Caused by Motor Not Deenergizing Following Opening Attempt,Resulting in Current Draw & Motor Failure.Valve Repaired (← links)
- 05000272/LER-1984-020-01, :on 840822,design Discrepancy Re Existing Gauges for Monitoring Differential Pressure Across Airlock Doors Discovered,Resulting in Possible Degradation of Safety Barrier.Gauges Removed (← links)
- 05000272/LER-1984-017-01, :on 840716,insp Revealed Metal Filings in Charging Pump Casings.Filings May Have Caused 840713 Seizure of Charging Pump 12 & Seizure of Redundant Centrifugal Charging Pump.Investigation Continuing (← links)
- 05000272/LER-1984-018, :on 840713,inadvertent Safety Injection Signal Occurred Due to Personnel Error.Caused by Failure to Follow Procedure.Technicians Counseled About Responsibilities.W/ (← links)
- 05000272/LER-1995-026, :on 951023,MSSV Failed Lift Set Test.Cause Under Investigation.Appropriate Enhancements Will Be Made to Safety Valve Program Based on Results of Root Cause Determination (← links)
- 05000272/LER-1984-019-01, :on 840829,live Sea Turtle Found Impinged on Trash Bars of Circulating Water Sys Intake.Specimen Recovered & Released in Healthy Condition (← links)
- 05000272/LER-1984-014-01, :on 840605,vital Bus 1A Deenergized When Bus Infeed Breaker Failed to Close.Caused by Lack of Adequate Procedural or Administrative Controls.Insp & Tests Performed on Diesel 1A (← links)
- 05000272/LER-1984-013-01, :on 840602,power Interrupted Between 500 Kv Yard & 13 Kv Bus,Resulting in Loss of Onsite Power to 4 Kv Group & Vital Busses.Caused by Operator Error.Individual Counseled & Reprimanded for Actions (← links)
- 05000272/LER-1984-012-01, :on 840527 & 30,radiography Results Revealed That Disk Became Detached from Stem of Valves 11SJ16,21SJ16 & 22SJ16.Caused by Weld Matl Missing from Disk Hole Allowing Disk to Unthread from Disk Nut (← links)
- 05000272/LER-1992-003, :on 920117,control Room Ventilation Automatically Switched from Normal to Accident Mode of Operation.Caused by Equipment Failure.Damaged Detector Cable Shield Wire Repaired (← links)
- 05000272/LER-1984-011-01, :on 840503,fire Suppression Pump Removed from Svc for 18-month Surveillance Requirements & on 840509,while Returning Pump to Svc,Pump Discharge Valve Would Not Open. Caused by Broken Stem.Stem & Disc Replaced (← links)
- 05000272/LER-1983-043-03, /03L-0:on 830920,during Routine Operation,Delta Temp/Delta Pressure Station Auxiliary Performer Chart Recorder Indication Failed.Caused by P-250 Computer Electronic Lockup.Computer Rebootstrapped (← links)
- 05000272/LER-1983-024-03, /03L-0:on 830525,supply Breaker to Vital Instrument 1C Inverter Inadvertently Opened.Automatic Transfer to Alternate Power Supply Occurred W/No Loss of Equipment or Indication (← links)
- 05000272/LER-1984-016, :on 840613,document Control Procedures Submitted Late to Station Operations Review Committee.Caused by Administrative Error.Dept Involved Reminded of Tech Spec Requirement (← links)
- 05000272/LER-1984-015-01, :on 840611,received Notification by Westinghouse of Potential Unreviewed Safety Question Re Consistency Between Safety Analysis & Tech Specs.Procedures for Mode 3 Operation Revised (← links)
- 05000272/LER-1984-009, :on 840229,technical Discrepancy Confirmed by Bechtel in Design Elevation Calculations for Svc Water Intake Structure.Caused by Design Error.Design Change Will Be Made to Raise Level of Air Intake Louvers (← links)
- 05000272/LER-1984-005-01, :on 840224,reactor Trip Occurred from 100% Power.Caused by Turbine Generator Tripping on Generator Neutral Ground Protection.Investigation Into Extent & Cause of Damage in Progress (← links)
- 05000272/LER-1976-010-03, /03L-0:on 760927,both Intermediate Range Nuclear Instrument Channels Rendered Inoperable.Caused by Prior Wetting of Nuclear Detectors within Detector Well.Connectors Cleaned & Reinstalled (← links)
- 05000272/LER-1976-001-01, /01T:on 760823,boric Acid Tank Concentration Found Low.Caused by Leaking Charging Pump Discharge Valves.Valve Seats Relapped (← links)
- 05000272/LER-1976-002-01, /01T:on 760822,Conde Milking Machine Co Model MX-16A (Containment Air Sample Pump for Air Particulate & Gaseous Radiation Monitors R11A,R12A & R12B) Failed.Caused by Bearing &/Or Shaft Seal Seizure (← links)
- 05000272/LER-1976-003-03, /03L:on 760902,RMS Channel 11A,12A & 12B Channel Checks Not Performed Per Tech Spec Requirements.Caused by Nonspecific Control Console Reading Sheet.Sheet Revised (← links)
- 05000272/LER-1976-004-03, /03L:on 760902,during Transfer of 1A Vital Instrument Bus to Alternate Power Source,Valve 1RH2 Closed, Causing Loss of Cooldown Capability.Caused by Erroneous High Pressure Signal (← links)
- 05000272/LER-1976-007-03, /03L:on 760915,1RH1 Inadvertently Closed.Caused by 1B Vital Instrument Bus Output Voltage Fluctuation Due to Technician Use of Grounded Oscilloscope.Charging Pump 13 Secured & 1RH1 Reopened (← links)
- 05000272/LER-1976-008-03, /03L:on 760902,setpoints for Containment Radiation Monitors R12A & R12B More Conservative than Required & Setpoint for Monitor R11A Less Conservative.Caused by Personnel Error.Setpoints Recalculated (← links)
- 05000272/LER-1976-009-03, /03L:on 761005,shift Supervisor Found Four Routine Tech Spec Surveillance Requirements Overdue.Caused by Misfiling of Respective Insp Order Cards.Surveillances Completed (← links)
- 05000272/LER-1976-011-03, /03L:on 761019,shift Supervisor Discovered Routine Tech Spec Surveillance Overdue.Caused by Nonreturn of Last Completed Surveillance Card for Clearance Through Computer (← links)
- 05000272/LER-1976-012-03, /03L:on 761101,diesel Generator 1A Tripped on High Jacket Water Temp.Caused by Loose Driver Train Set Screw,Prohibiting Motor from Moving Valve Stem.Liquid Lock Tight Applied to Setscrew (← links)
- 05000272/LER-1976-013-03, /03L:on 761027,svc Water Pump Motor 16 Failed. Caused by Minor Insulation Cracks in End Turns of Motor. Motor Operation Continued Until Repairs Established (← links)
- 05000272/LER-1976-015-03, /03L:on 761204,main Steam Safety Valve 13 (13MS15) Setpoint Found Greater than 1% Tolerance.Cause Not Stated. Valve Seat Lapped Due to Signs of Weeping.Valve Reset (← links)
- 05000272/LER-1976-016-03, /03L:on 761203,safety Injection Initiated Due to High Steam Line Differential Pressure.Caused by Use of Grounded Test Leads Rather than Ungrounded Leads (← links)
- 05000272/LER-1976-017-03, /03L:on 761206,investigation of Air Flow Calculator Revealed 761124 Inoperability of Personnel Airlock.Caused by Calculation Error (← links)
- 05000272/LER-1976-018-03, /03L:on 761202,collection of Condensate Found in Low Side of Steam Generator 12 Steam Flow Transmitter FT-522.Caused by Incorrect Pipe Slope Causing Erroneous Readings (← links)
- 05000272/LER-1976-019-03, /03L:on 761130,1201 & 03,boron Injection Tank Boron Concentration Found Low.Caused by Inadvertent Safety Injection Actuations (← links)
- 05000272/LER-1976-020-03, /03L:on 761207,RCS Sample Analysis Results Noted Above Tech Spec Max.Caused by Boron Injection Tank Injecting Into RCS Due to Inadvertent Safety Injection Actuation (← links)
- 05000272/LER-1976-021-03, /03L:on 761210,boron Injection Tank Sample Analysis Indicated Low Boron Concentration.Caused by Personnel Analytical Error.Technician Reinstructed (← links)
- 05000272/LER-1976-022-03, /03L:on 761211,steam Generator 13 Level Transmitter LT-538 Failed.Cause Not Stated.Borton Instrument Co Model 386 Transmitter Replaced (← links)
- 05000272/LER-1976-023-03, /03L:on 761201 & 03,boron Injection Tank Parallel Suction Valves 1SJ4 & 1SJ5 & Parallel Discharge Valves 1SJ12 & 1SJ13 Cleared of Electrical Power & Tagged.Caused by Personnel Error.Procedure Revised (← links)
- 05000272/LER-1976-024-03, /03L:on 761213,filter Failure Alarm Received on RMS Channel R11A (Containment/Plant Vent Air Particulate). Caused by Barber-Coleman Bearing Failure.Low Speed Drive Motor Replaced (← links)
- 05000272/LER-1976-025-03, /03L:on 761215,stuck Rod Moved to Maintain Reactor Critical While Measuring Stuck Rod Worth During Low Power Testing.Caused by Slight Overdilution of Reactor Coolant Boron Concentration (← links)
- 05000272/LER-1976-026-03, /03L:on 761225,boron Concentration Lowered Below Tech Spec Min & Rendered Boron Injection Tank Inoperable. Caused by Inadvertent Safety Injection Actuation (← links)
- 05000272/LER-1976-027-03, /03L:on 761229,hydraulic Oil Leaked from MSIV 12, Rendering Valve Inoperable in Closed Position.Caused by Fractured Hydraulic Oil Line (← links)
- 05000272/LER-1976-028-01, /01T:on 761231,shift Supervisor Notified of Liquid Leak on Unit 2 Side of Auxiliary Bldg Dividing Wall.Caused by Inadvertent Opening of Boric Acid Sample Line Valves. Valves Closed (← links)
- 05000272/LER-1976-029-03, /03L:on 770104,four on-the-spot Changes Discovered Not Reviewed within 14-day Tech Spec Requirement.Caused by Personnel Error.Daily Log Established (← links)
- 05000272/LER-1976-030-03, /03L:on 761228,sample Analysis of Boric Acid Storage Tank Boron Concentration Noted Low.Caused by Personnel Error in Analyzing Concentration (← links)
- 05000272/LER-1983-026-03, /03L-0:on 830530,containment Fan Coil Unit (Cfcu) 17 Svc Water Flow Observed Below Tech Specs.Cfcu Declared Inoperable.Caused by Valve 15SW57 Being Plugged W/Shells & Debris from Cleaning of Svc Water Sys (← links)
- 05000272/LER-1984-010, :on 840401,discovered Disks Separated from Stems on 11 RTD Bypass Line Valves on 830129.Caused by Force Exerted on Joint When Valve Backseated (← links)
- 05000272/LER-1982-093-03, /03L-0:on 821225,plant Vent Gross Activity Monitor Indication Declared Inoperable.Daily Grab Samples of Plant Vent Effluent Not Taken Until 830104 Violating Ets. Caused by Personnel Error.Procedures Reviewed (← links)
- 05000272/LER-1983-061-03, /03L-0:on 831209,reactor Trip Sys & ESF Actuation Sys Instrumentation Surveillance Testing Not Completed within 1 H Limit Required by Tech Specs.Caused by Typographical Error in Procedure (← links)
- 05000272/LER-1983-060-03, /03L-0:on 831203,during Routine Surveillance,Vital Heat Trace Channel 602B Failed to Draw Greater than 0.5 Amps as Required.Caused by Connections Exhibiting High Resistance.Terminals Cleaned & Tightened (← links)
- 05000272/LER-1983-062-99, /99X-0:on 831122,triaxial time-history Accelograph Inside Bioshield on 81-ft Elevation of Containment Bldg Failed.Cause Not Stated.Accelerometer Will Be Replaced During Next Outage (← links)
- 05000272/LER-1983-057-03, /03L-0:on 831115,containment Hydrogen Analyzer Channel 11 Exhibited Low Output During Routine Calibr Checks & Declared Inoperable.Caused by Failed Detector.Detector Replaced & Calibr (← links)
- 05000272/LER-1983-058-03, /03L-0:on 831118,air Lock Exterior Door Exhibited Leakage Rate Greater than Allowed by Tech Specs.Air Lock Declared Inoperable.Caused by Loose Door Latch Assembly.Door Latch Assembly Tightened (← links)
- 05000272/LER-1983-059-03, /03L-0:on 831128,air Lock Interior Door at Elevation 130 Ft Exhibited Leakage Rate Greater than Allowed by Tech Specs.Caused by Outer Seal of Interior Door Not Seated Properly in Groove.Personnel Retrained (← links)
- 05000272/LER-1983-051-03, /03L-0:on 831103,unidentified Containment Sump Inleakage Exceeded Tech Spec Limit of 1 Gpm.Caused by Packing Failure on Valve 1CV75 & Bonnet Leak on 12GB3.Gland Repacked & Bonnet Clamped & Furmanited (← links)
- 05000272/LER-1983-052-03, /03L-0:on 831104,containment Fan Coil Unit 11 Tripped While Starting in Fast Speed for Daily Surveillance. Caused by Shorted & Grounded Motor Stator Windings.Motor Replaced (← links)
- 05000272/LER-1983-054-03, /03L-0:on 831112,intermediate Range Channel N35 High Flux Bistable Trip Did Not Occur When Power Reached 25%.Caused by Setpoint Drifting Out of Calibr.Channel Recalibr (← links)
- 05000272/LER-1983-050-03, /03L-0:on 831031,130-ft Elevation Airlock Interior Door Failed Surveillance Test & Declared Inoperable.Caused by Improperly Seated Seal.Personnel Will Be Trained in Proper Airlock Operation (← links)
- 05000272/LER-1983-055-03, /03L-0:on 831110,RCS Unidentified Leakage Exceeded Tech Spec Limit.Caused by Change in Containment Fan Coil Unit Configuration & Speed.Unit Shut Down to Identify & Repair Leaks in Containment (← links)
- 05000272/LER-1982-024, Svc Water Flow to Containment Fan Coil Unit 12 Discovered Less Required than 700 Gpm.Caused by Closed Flow Control Valve 125w223.Valve opened.W/831117 (← links)
- 05000272/LER-1983-053-01, /01T:on 831114,radiation Monitoring Channel 1R11a Failed to Isolate Containment Ventilation.Other Channels Indicated Same Problem.Cause Not Stated.Signal Reset,Causing All Channels to Be Blocked (← links)
- 05000272/LER-1983-049-03, /03L-0:on 831017,foreign Matl Discovered in Safety Injection Pump 11 Oil Reservoir,Rendering Pump Inoperable.Caused by Pump leak-off Backed Up in Catch Trough Due to Plugged Drain Line (← links)
- 05000272/LER-1983-047-03, /03L-0:on 831006,control Room Operator Discovered Control Rod Position Indicator 1D4 Channel Indicating Greater than Max Allowable Deviation.Caused by Calibr Drift. Indicator & Module Recalibr (← links)
- 05000272/LER-1983-048-03, /03L-0:on 830815,charging Pump 11 Declared Inoperable When Oil Observed Issuing from Speed Increaser Air Breather.Caused by Leak in Lube Oil Cooler Due to Erosion/Corrosion.Cooler Replaced (← links)
- 05000272/LER-1983-039-03, /03L-0:on 830904,P-250 Computer CRT Did Not Display Updated Info,Rendering RCS Subcooling Monitor Inoperable.Caused by Computer Being Electronically Locked Up.Computer Cleared & Rebootstrapped (← links)
- 05000272/LER-1983-044-03, /03L-0:on 830926 & 1005,during Routine Surveillance,Containment Air Lock Failed to Meet Test Requirements.Caused by Improper Operation of Air Lock. Personnel Training Will Be Upgraded (← links)
- 05000272/LER-1983-046-03, /03L-0:on 830924,control Room Operator Observed overtemp-delta Instrument 13 Setpoint Reading Higher than Allowed by Tech Spec.Caused by Functional Generator Calibr Drift.Generator & Indicator Recalibr (← links)
- 05000272/LER-1984-004, :on 840121,reactor Trip Occurred Due to low- Low Water Level in Steam Generator 13.Caused by Valve Intermittently Binding While in Shut Position.Valve Adjusted (← links)
- 05000272/LER-1984-006, :on 840202,containment Fan Coil Unit 15 Declared Inoperable When Leak Discovered on Svc Water Vent Line.Caused by Corrosion Due to Excessive Welding During Initial Installation.Vent Line Replaced (← links)
- 05000272/LER-1983-037-03, /03L-0:on 830821,mechanical Repairman Inadvertently Loosened Flanges on Outlet Valve 11 of Boric Acid Storage Tank.Flanges Retightened.Leakage Stopped (← links)
- 05000272/LER-1984-003, :on 840110,turbine Trip Occurred Due to high- High Level in Steam Generator 14,resulting in Reactor Trip. Caused by Steam Generator Level Error Signal.Level Control Tested for Proper Response & Monitored (← links)
- 05000272/LER-1984-002, :on 840107,inlet Valve 13CN27 Closed Due to Spurious High Level in Feedwater Heater 15C.Caused by Heater Bypass 1CN47 Failing to Open.Bypass Differential Setpoint Lowered & Signal Summator Module Replaced (← links)
- 05000272/LER-1984-001, :on 840101,reactor Tripped During Startup When Power Exceeded 10% W/Turbine Not Latched.Caused by Difficulty in Controlling Steam Generator Feed.Procedure & Feed Pump Operating Instrumentation Revised (← links)
- 05000272/LER-1983-074-03, /03L-0:on 831230,due to Icing Conditions at Circulators,Control RPI 2A3 & 1C1 Exceeded 12 Steps from Group Demand Position for Group.Caused by Drift of Sensor Output.Channels Recalibr (← links)
- 05000272/LER-1983-070-03, /03L-0:on 831221,exterior Door of 100-ft Elevation Airlock Exhibited Excessive Leakage During Surveillance Testing.Caused by Cut Exterior Door Outer Seal. Seal Replaced (← links)
- 05000272/LER-1983-068-03, /03L-0:on 831224,operator Observed Steam Issuing from Diesel Fire Suppression Pump 1 Cooling Water Expansion Tank.Caused by Frozen Diesel Water Cooling Lines Due to Subzero Temps.Damper Shut.Lines Thawed (← links)
- 05000272/LER-1983-069-03, /03L-0:on 831226,fire Protection Header Pressure Dropped Suddenly Due to Ruptured 4-inch Alarm Valve.Caused by Frozen Water within Valve.New Valve Ordered & Will Be Installed Upon Receipt (← links)
- 05000272/LER-1983-071-03, /03L-0:on 831222,containment Fan Coil Unit (Cfcu) 14 Removed from Svc to Repair Flexible Connector.Connector Temporarily Repaired.Cfcu Returned to Operable Status (← links)
- 05000272/LER-1983-075-03, /03L-0:on 831227,microprocessor Memory Lost for Hydrogen Analyzer Channel 12 & 13.Caused by Voltage Transient on Vital Instrument Bus 2B Making Microprocessor Lose Constants.Constants Reinstalled (← links)
- 05000272/LER-1983-073-03, /03L-0:on 831223,during Surveillance Testing on Emergency Diesel Generator 1B,jacket Water Cooling Leak from Instrument Line Discovered.Caused by Elbow Cracking Due to Engine Vibration.Design Change Initiated (← links)
- 05000272/LER-1983-065-03, /03L-0:on 831226,containment Sump Level Monitoring Sys Indicated Unsubstantiated Leakage.Steam Generator 14 Secondary Handhole Cover Found Leaking.Cause Not Stated. Cover Repaired (← links)
- 05000272/LER-1983-063-03, /03L-0:on 831214,axial Flux Difference Recorder & Monitor Alarm Not Monitored & Logged When Removed from Svc to Perform Routine Change of Target Flux Difference Value.Caused by Personnel Error (← links)
- 05000272/LER-1983-067-03, /03L-0:on 831220,minor Leak Developed on Diesel Cooling Water Expansion Tank.Caused by Bushing Wear Allowing Radial Shaft Movement.Leak Repaired,Pump Tested & Declared Operable (← links)
- 05000272/LER-1983-064-03, /03L-0:on 831214,fuel Oil Leak Found on Fire Suppression Pump Diesel Engine 1 & Pump Declared Inoperable. Caused by Fuel Oil Pressure Gauge Hose Rupture Due to Wear from Normal Engine Vibration.Hose Replaced (← links)
- 05000272/LER-1983-004-03, /03L-0:on 830124,equipment Operator Discovered Leak on Diesel Generator 1B Jacket Water Sys.Caused by Cracked Piping Nipple Due to Personnel Standing on Jacket Water Sys Piping.Cracked Nipple Replaced (← links)
- 05000272/LER-1983-005-03, /03L-0:on 830121,RHR Sys Automatic Isolation Function Not Tested Prior to Placing RHR Sys in Operation. Caused by Procedure Problems & Personnel Inexperience. Procedures Revised (← links)
- 05000272/LER-1983-003-04, /04L-0:on 830121,during Commencement of Refueling Shutdown for Unit 2,Unit 1 Restart Delayed Approx 7 Wks. Caused by Problems W/Steam Generator Nozzle Dams & Degradation of Welds in Svc Water Piping (← links)
- 05000272/LER-1983-072-01, /01T-0:on 831229,fire Suppression Water Storage Tanks Indicated Level Below Min Capacity Allowed.Caused by Incorrect Fire Suppression Storage Tank Capacity Curves.New Tank Capacity Curves Generated (← links)
- 05000272/LER-1983-066-01, /01T-0:on 831225 & 26,fire Suppression Water Storage Tank Capacity Dropped Below Min.Caused by Ruptured Elbow on Sprinkler Riser Due to Freezing.Elbow Replaced & Number of Operating Pumps Increased (← links)
- 05000272/LER-1983-045-03, /03L-0:on 830925,on Two Separate Occasions, Failure of P-250 Process Computer Resulted in Inoperability of RCS Subcooling Monitor.Caused by High Room Temp.Room Cooled Down & Computer Rebooted (← links)
- 05000272/LER-1983-040-03, /03L-0:on 830916,reactor Trip Breaker 1 post-maint Surveillance Not Completed within 1 H Interval.Caused by Addl Testing Incorporated Into Surveillance.License Change Request Will Be Submitted to Increase Interval (← links)
- 05000272/LER-1983-041-03, /03L-0:on 830915,discovered Containment Air Particulate Detector Filter Failure Alarm Illuminated.Caused by Inadequate Supply of Filter Paper.New Filter Paper Installed (← links)
- 05000272/LER-1983-042-04, /04L-0:on 830914,routine Release of Radioactive Liquid from Chemical & Vol Control Monitoring Tank 11 Performed W/O Verification of Operability of Release Line Effluent Monitor.Procedure Revised (← links)
- 05000272/LER-1983-031-04, /04L-0:on 830711,13 & 19,dead Sea Turtles Impinged on Circulating Water Sys Intake Trash Bars.Caused by Large Vol of River Water Drawn Through Sys Intake.No Corrective Action Necessary (← links)
- 05000272/LER-1983-030-03, /03L-0:on 830710,emergency Diesel Generator 1A Tripped During Routine Surveillance.Caused by Security Guard Inadvertently Striking Emergency Trip Button.Personnel Eliminated from Security Force (← links)
- 05000272/LER-1983-029-03, /03L-0:on 830617,control Room Operator Discovered Three RPI Channels Indicating Greater than Max Allowed Deviation in Tech Specs.Caused by Calibr Drift in Two Channels.Channels Recalibr (← links)
- 05000272/LER-1983-034-01, /01T-0:on 830811,pump Turbine Trip Valve Was in Tripped Position & Auxiliary Feedwater Pump 13 Failed to Start Automatically Due to Accumulation of Grass on Intake Screens.Caused by Out of Adjustment Switch (← links)
- 05000272/LER-1983-032-03, /03L-0:on 830725,during Routine Power Operation, Boric Acid Transfer Pump 11 Tripped Shortly After Being Started,Following Completion of Batch Transfer Evolution. Cause Assumed to Be Solid Boron Obstruction (← links)
- 05000272/LER-1983-033-01, /01T-0:on 830811,unit Tripped.Caused by Grass & Debris Accumulation on Circulating Water Sys Intake Screens. Screens Cleaned.Debris Will Be Routinely Cleaned from Sys Intakes (← links)
- 05000272/LER-1983-009-99, /99X-0:on 830130,during Routine Plant Cooldown, Inadvertent Safety Injection Occurred Due to Low Pressurizer Pressure.Caused by Operator Overlooking Decreasing Pressure. All safety-related Equipment Functioned as Designed (← links)
- 05000272/LER-1983-019-03, /03L-0:on 830315,diesel Fire Pump 2 Failed to Automatically Start on Decreasing Header Pressure & Declared Inoperable.Caused by Loose Wiring Connection on Diesel Engine Starter.Wiring Connection Retightened (← links)
- 05000272/LER-1983-008-03, /03L-0:on 830311,discovered Pressurizer Code Safety Valves Tested for Lift Set Pressure & Seat Leakage by Wyle Labs During 821102-13 Lifted in Excess of Tech Specs & Exhibited Heavy Seat Leakage.Cause Undetermined (← links)
- 05000272/LER-1983-018-03, /03L-0:on 830223,sample Results for Boric Acid Tanks Indicated Boric Acid Concentrations Below Tech Spec Limit of 20,100 Ppm.Caused by Dilution of Tanks During Recovery from Safety Injection.Tanks Returned to Specs (← links)
- 05000272/LER-1983-028-03, /03L-0:on 830606,control Room Operator Observed Pressurizer Backup & Control Heaters Deenergized.Caused by Failure of Control Relay for Oil Heater Trip Function.Relay Coil Replaced (← links)
- 05000272/LER-1983-027-03, /03L-0:on 830602,hydrogen Analyzer 12 Chart Recorder Tailed Offscale High.Caused by Line Voltage Transient on Vital Instrument Bus 2B,causing Instrument Microprocessor to Lose Contents (← links)
- 05000272/LER-1983-023-01, /01T-0:on 830602,notification Received from Westinghouse Re Potential Increased Power Peaking in Bottom of Core.Procedures Will Be Implemented to Insure Operation within Tech Spec Limits (← links)
- 05000272/LER-1983-025-03, /03L-0:on 830525,containment Air Particulate Monitor Indicated Alarm Condition W/O Receiving Purge/Pressure Relief Isolation Function.Caused by Channel Output Alarm Relay Wire Ball Out of Place (← links)
- 05000272/LER-1983-017-03, /03L-0:on 830215,containment Sump Pumps 11 & 12 Found Running Continuously.To Prevent Damage,Pumps de-energized & Tagged Out.Caused by Level Detector LD-7749 Malfunctioning Due to Binding in Magnetic Sleeve Assembly (← links)
- 05000272/LER-1983-016-03, /03L-0:on 830211,containment Air Particulate Monitor Indicated off-scale Low.Caused by Signal Lead to Scintillation Detector Open in Detector Cable Connector. Cable Apparently Strained During Maint.Connector Replaced (← links)
- 05000272/LER-1982-041-03, /03L-0:on 820626,during Routine Insp,Water Discovered in Charging Pump 12 Gear Oil Reservoir.Caused by Leak Through Gear Oil Cooler.Cooler & Oil Replaced (← links)
- 05000272/LER-1982-015-03, /03L-0:on 820316,vital Bus 1A Tripped Resulting in Loss of Component Cooling Water & Svc Water Flows.Caused by Shorted Wire in TD5 Undervoltage Relay to Feeder Cubicle Door,Causing Vital Bus 1A to Trip W/O Transfer (← links)
- 05000272/LER-1982-017-03, /03L-0:on 820327,while Performing Surveillance Procedure SP(o)4.3.2 1.1.a,4 Kv Breaker 1C4D Failed to Remain Closed.Caused by Undocumented Temporary Jumper in Breaker 1C4D Control Circuit.Jumper Removed (← links)
- 05000272/LER-1982-018-01, /01T-0:on 820403,during Visual Insp of Containment Bldg,Svc Water Leak Discovered on Flange of Valve 14SW65. Caused by Loose Studs on Valve Flange.Studs Torqued & Leakage Stopped (← links)
- 05000272/LER-1982-016-03, /03L-0:on 820326,gaseous Release Initiated from Waste Gas Sys.Caused by Failure of Control Room Operator to Properly Perform Operating Instruction Resulting in Incorrect Vent Monitor Alignment.Ets Limits Not Exceeded (← links)
- 05000272/LER-1983-013-99, /99T-0:on 830215,calculated Moderator Temp Coefficient (Mtc) Value for All Control Rods Withdrawn Found More Positive than Tech Spec Allowance But within Expected Deviation.Limitation on Withdrawal Will Be Maintained (← links)
- 05000272/LER-1983-007-03, /03L-0:on 830129,control Room Operator Discovered Low Flow Through Number 14 Reactor Coolant Loop Resistance Thermometer Detector Bypass.Caused by Obstruction in Hot Leg Flowpath.Hot Leg Cycled & Bypass Flow Restored to Norm (← links)
- 05000272/LER-1983-006-03, /03L-0:on 830126 & 28 Nonseismically Qualified Components & Power Boxes Discovered Installed in Dc Control Power Feeds to Emergency Diesel Generators.Caused by Personnel Oversight.Power Box Components Replaced (← links)
- 05000272/LER-1982-091-01, /01T-0:on 821130,leakage Discovered from Weld on Svc Water Piping to Component Cooling HX 12.Caused by Degradation of Weld & Similar Joints Due to Type of Filler Metal Used & Corrosive Environ of Svc Water Sys (← links)
- 05000272/LER-1982-087-03, /03L-0:on 821109,during Refueling Operations, Alarms Indicated Fire Protection Deluge Sys Had Been Actuated.No Apparent Cause Determined.Charcoal Filters Involved Replaced (← links)
- 05000272/LER-1982-088-03, /03L-0:on 821109,fire Observed in Fire Detection Instrumentation Panel 1FP3.Panel de-energized & Several Fire Detectors Rendered Inoperable.Caused by Failure of Panel Alarm Buzzer Relay.Relay Replaced (← links)
- 05000272/LER-1982-090-01, /01T-0:on 821121,video Insp of Removed Fuel Assemblies Revealed Cladding Ruptures on Element in Fuel Assembly D-20.Cause Unknown.Vendor to Conduct More Detailed Investigation (← links)
- 05000272/LER-1982-064-03, /03L-0:on 820816,Westinghouse Reported Potential Problem Re Solid State Protection Sys.Evaluation of Rept for Applicability to Facility Underway.Supplemental Rept Will Be Submitted (← links)
- 05000272/LER-1983-012-01, /01T-0:on 830222,during Startup,Reactor Manually Tripped.Caused by Rapidly Decreasing Steam Generator Levels. Manual Trip Obscured Failure of Trip Breakers to Open Automatically.Plant Cooldown Commenced (← links)
- 05000272/LER-1983-015-03, /03L-0:on 830210,during Surveillance Testing of Diesel Generator 1A,jacket Water High Temp Alarm Received. Caused by Missing Handwheel on Flow Transmitter High Side Isolation Valve.Handwheel Replaced (← links)
- 05000272/LER-1983-010-03, /03L-0:from 821016-830205,during Testing of Type B & C Components,Three Containment Isolation Valves Exhibited Leakage Rates in Excess of Test Equipment Range. Valves 1CC215 & 1VC8 Restroked.Valve 14GB4 Reworked (← links)
- 05000272/LER-1983-014-03, /03L-0:on 830209,auxiliary Alarm Typewriter Failed.Caused by Failed Circuit Board in Auxiliary Annunciator Sys.Board Replaced & Separate Annunciators for Sump Sys Being Installed (← links)
- 05000272/LER-1982-086-03, /03L-0:on 821027,five Fire Barrier Penetrations Found non-functional During Routine Surveillance.Caused by Inadequate Sealing.Original Surveillance Procedure Failed to Specifically Identify Penetrations.Procedure Revised (← links)
- 05000272/LER-1982-085-01, /01T-0:on 821113,due to Resulting Loss of F & G Group Buses,Automatic Starting Feature of 1 & 2 Diesel Fire Pumps Disabled.Caused by Planned Maint on Station Power Transformer 12.Maint Completed & Power Restored (← links)
- 05000272/LER-1982-083-03, /03L-0:on 821102,during Routine Shutdown Operation,Temp Recorder for Air temp-delta T Channels Was Not Printing.Caused by Failure of Pinion Gear on Chart Drive Motor.Motor Replaced (← links)
- 05000272/LER-1982-082-03, /03L-0:on 821025,thermal Detectors for Iodine Removal Sys & Pressure Relief Sys Discovered Missing from Fire Detection Instrumentation Surveillance Procedures. Caused by Oversight During Procedure Inception (← links)
- 05000272/LER-1982-080-03, /03L-0:on 821017 & 18,shutdown Margin Calculation Not Performed within Required Tech Spec Interval.Caused by Personnel Oversight.Personnel Counseled (← links)
- 05000272/LER-1982-079-03, /03L-0:on 821006,following Satisfactory Completion of Maint Procedure M3M,discovered That Procedure Not Performed During Preceding Wk.Caused by Oversight on Part of Electrical Supervisor.Order Written for Weekly Surveillance (← links)
- 05000272/LER-1982-081-01, /01P:on 821029-31,during Functional Testing of Hydraulic Snubbers,Two Snubbers on Steam Generators 11 & 14 Failed Bleed Test.Caused by Piston Packings Losing Pretension.Acceleration Test Passed (← links)
- 05000272/LER-1982-076-03, /03L-0:on 820930,diesel Fire Pump 1 Would Not Start in Automatic Mode of Operation During Surveillance Testing.Caused by Stuck Fire Suppression Sys Header Low Pressure Switch.Switch Freed & Exercised (← links)
- 05000272/LER-1982-077-03, /03L-0:on 821002,during Normal Operation,Svc Water Flow Indication for Containment Fan Coil Unit 15 Was Erratic.Caused by Silt Plugging Transmitter Sensing Lines. Lines Blown Down & Tested Satisfactorily (← links)
- 05000272/LER-1982-075-03, /03L-0:on 820927 Pressurizer Level Channel III Read High.Channel Bistable Placed in Tripped Condition Constituting Operation in Degraded Mode.Cause Under Investigation.Supplemental Rept Will Be Submitted (← links)
- 05000272/LER-1982-072-03, /03L-0:on 820925,exhaust Fan 11 Drive Belts in Fuel Handling Area Discovered Broken & Fan 12 Belts Loose & Operating at Less than Normal Speed.Caused by High Ambient Temp in Vicinity of Fans.Belts Replaced (← links)
- 05000272/LER-1982-045-04, Waste Monitor Tank Sample Discarded Before Composite Samples Assembled.Caused by Technician Inadvertently Pouring Out Sample.Personnel Counseled Re Procedures.Simulated Sample Made (← links)
- 05000272/LER-1982-050-04, Atlantic Loggerhead Turtle Found Impinged on Circulating Water Sys Intake Trash Bars.Caused by Inability of Turtle to Actively Avoid Approach Velocities to Intake Due to Weakened State (← links)
- 05000272/LER-1982-016-04, During Gaseous Release from Waste Gas Sys,Containment/Plant Vent Monitors 1R11A, 1R12A & 1R12B Incorrectly Aligned.Caused by Operator Failure to Properly Perform Operating Instruction (← links)
- 05000272/LER-1982-070-03, /03L-0:on 820912 & 14,pressurizer Pressure Controller Shifted to Manual Mode W/Decreasing Pressure. Caused by Intermittent Problem in Pressure Controller or manual-auto station.Manual-auto Station Replaced (← links)
- 05000272/LER-1982-068-03, /03L-0:on 820827,100-ft Elevation Containment Air Lock Declared Inoperable After Excessive Leakage Discovered Past Inner Door Seals.Caused by Closing Door W/Excessive Force.Seal Replaced.Installation of Snubbers Proposed (← links)
- 05000272/LER-1982-065-03, /03L-0:on 820818,operator Received Alarms on Radiation Monitoring Sys,Rendering Channels 1R11A,1R12A & 1R12B Inoperable.Caused by Torn Filter Paper Jamming in Unit.Paper Replaced & Sys Tested Satisfactorily (← links)
- 05000272/LER-1982-051-03, /03X-1:on 820728,following Reactor Trip,Level in Auxiliary Feed Storage Tank Dropped Below Tech Spec Min. Caused by Binding of Valve 1DR6.Valve Manually Cycled & Tank Level Restored to Normal.Valve Returned to Remote Mode (← links)
- 05000272/LER-1982-067-03, /03L-0:on 820912,no Indication of Svc Water Flow to Containment Fan Coil Unit 11 Noted While Coil Unit 14 Inoperable.Caused by Terminal Screw on Svc Water Flow Transmitter Breaking Off.Screw Replaced (← links)
- 05000272/LER-1981-019-03, /03X-1:on 810221,fire Alarm Annunciation on Panel 1RP5 for Waste Gas Compressor Observed But No Audible Alarm Heard.Caused by Failure of Amplifier to Discriminate Sys Noise from Announcement Function.Amplifier Adjusted (← links)
- 05000272/LER-1982-066-03, /03X-1:on 820825,100 Ft Elevation Containment Air Lock Outer Door Discovered Not Properly Sealed.Caused by Seal Damage Due to Personnel Closing Door W/Excessive Force. Seal Replaced & Door Tested Satisfactorily (← links)
- 05000272/LER-1982-071-04, /04L-0:on 820827,control Operator Discovered Increasing Level on Plant Vent Radioactivity Monitor & Issued Significant Event Notifications for Unplanned Releases.Caused by Primary Coolant Leakage from RCS Filter (← links)
- 05000272/LER-1982-074-04, /04L-0:on 820903,indication of Unplanned Release Through Plant Vent Received.Three Individuals Contaminated During Attempts to Locate Source.Caused by Door Hitting Against Drain Valve 1CV332,causing Valve to Loosen & Open (← links)
- 05000272/LER-1982-073-03, /03L-0:on 820906,calculation Showed That Quadrant Power Tilt Ratio for Bottom Detector N42 Exceeded Max Allowable Limit.Caused by Failed Milliamp Detector Switch in Current Meter Assembly.Assembly Replaced & Channel Tested (← links)
- 05000272/LER-1982-062-03, /03L-0:on 820813,RCS Chemistry Surveillance Not Completed on Schedule.Caused by Oversight of Chemistry Analyst.Surveillance Completed & Analyst Cautioned (← links)
- 05000272/LER-1982-063-03, /03L-0:on 820812,during Routine Operation,Pressure Level Channel III Indication Read High.Caused by Failed Level Transmitter.Pressurizer Level Transmitter Replaced & Channel Calibr (← links)
- 05000272/LER-1982-058-03, /03L-0:on 820809,steam Generator 12 Pressure Indication at Remote Shutdown Panel Failed Low.Caused by Transistor Failure in Instrument Power Supply.Failed Transistor Replaced (← links)
- 05000272/LER-1982-054-03, /03L-0:on 820731,unidentified RCS Leakage Found to Be Greater than Tech Spec Limit.Caused by Failed Packing on Valve 1CV75.Valve Repacked & Will Be Permanently Repaired During Next Refueling Outage (← links)
- 05000272/LER-1982-055-03, /03L-0:on 820801,during Surveillance Testing of Fire Suppression Sys,Number 1 Fire Pump Would Not Start from Automatic Initiation.Caused by Failed Battery Charger Fuse.Fuse Replaced & Battery Charged (← links)
- 05000272/LER-1982-052-03, /03L-0:on 820729,control Room Operator Observed RCS Subcooling Margin Recorder Had Failed.Data Points for Monitor Had Been Removed from Process Computer During Sys Maint Earlier That Day.Points Restored (← links)
- 05000272/LER-1981-057-03, /03L-0:on 810526,leak Rate on 100-ft Containment Air Lock Exceeded Allowable Leak Rate.Caused by Improperly Aligned Outer Door.Door Centered & Tested Satisfactorily (← links)
- 05000272/LER-1981-009-01, /01X-2:on 810129,during Normal Operation, Containment Sump Pump Operation Indicated 4.3 Gpm of Unidentified Leakage.Caused by Magnetrol Level Indicator Operating Erratically (← links)
- 05000272/LER-1981-058-04, /04L-0:on 810528,util Failed to Submit 1980 Radiological Rept by 810401 Per ETS 5.6.1.1.Caused by Personnel Error.Rept Submitted 810528 (← links)
- 05000272/LER-1982-048-03, /03L-0:on 820724,inner Door Seal Leakage of 100 Ft Elevation Containment Air Lock Door Greater than Tech Spec. Caused by Personnel Closing Door W/Excessive Force.Seal Replaced & Personnel Trained in Proper Door Closing (← links)
- 05000272/LER-1982-035-99, /99X-0:on 820526 & 0603,fire Pump 2 Failed to Start.Apparently Caused by Control Circuit Malfunction. Investigation Underway.Hope Creek Fire Suppression Sys Will Be Used in Interim (← links)
- 05000272/LER-1982-049-03, /03L-0:on 820724,hot Leg Pressure Wide Range Instrument Indication Read Lower than Actual RCS Pressure. Caused by Failed Printed Circuit Board in Pressure Transmitter.Circuit Board Replaced & Channel Recalibr (← links)
- 05000272/LER-1982-047-03, /03L-0:on 820726,containment Plant Vent Monitor Sample Pump Found de-energized & Failed to Start.Supply Breaker Found Tripped.Cause Undetermined.Breaker Reset & Closed & Pump Sucessfully Started from Control Room (← links)
- 05000272/LER-1982-050-03, /03L-0:on 820710,Atlantic Loggerhead Turtle Impinged on Circulating Water Sys Intake Trash Bar.Turtle Dead When Collected.Sys Circulates Large Amounts of River Water & Dead/Damaged Turtles Can Easily Be Impinged (← links)
- 05000272/LER-1982-043-03, /03L-0:on 820704,control Room Operator Received Air Particulate Detector Trouble Alarm on Panel 1RP1.Caused by Exhausted Filter Paper Supply Roll Due to Increased Use of Paper from Clearing Filter in Fast Mode.Roll Replaced (← links)
- 05000272/LER-1981-060-99, /99X-1:on 810611,diesel Fire Suppression Pump 2 Failed to Start in Automatic Mode.Caused by Shearing Off of Drive Shaft Counterweight Gear.Shaft Replaced (← links)
- 05000272/LER-1982-045-03, /03L-0:on 820710,sample from Waste Monitor Tank 12 Discarded Before Composite Analysis Could Be Performed. Caused by Technician Error.Sample from Similar Release Doubled Composited (← links)
- 05000272/LER-1982-042-03, /03L-0:on 820628,valves Discovered Open & Not Properly Locked.Caused by Improperly Locked Valve Upon Completion of Valve Position Verifications.Review of Incident Incorporated Into Safety Tagging Training Program (← links)
- 05000272/LER-1990-035-01, :on 901005,discovered That Position Indication Surveillance for Pressurizer PORVs & Block Valves Not Performed,Per Tech Spec Table 4.3-11 (← links)
- 05000272/LER-1982-005-01, /01X-1:on 820131,degradation of Fuel Cladding on Fuel Assembly C-04 Discovered.Caused by Fuel Lockup Due to Wedged Fuel Pellet.Fuel Assembly Placed in Spent Fuel Pit. All C Assemblies Scheduled for Reuse in Core (← links)
- 05000272/LER-1981-110-03, /03X-2:on 811106,while in Hot Standby,Inadvertent Safety Injection Occurred.Boron Injection Tank Was Also Diluted Below Tech Specs During Subsequent Valve Verification.Safety Injection Caused by Loss of 1A Bus (← links)
- 05000272/LER-1981-107-03, /03X-2:on 811029,inadvertent Safety Injection Occurred After Reactor Trip Due to Loss of Vital Bus 1A Inverter.Dilution of Boric Acid Sys Caused by Personnel Failing to Follow Procedures.Operator Counseled (← links)
- 05000272/LER-1981-052-03, /03L-1:on 810520,ESF Actuation Sys Channel 1B Failed.Probably Caused by Voltage Transient on 1B Vital 115-volt Ac Distribution Sys.Noise Suppression Circuits Installed in Safety Equipment Control Cabinet (← links)
- 05000272/LER-1982-046-03, /03L-0:on 820712,two Floor Penetrations in Control Room Found to Be Nonfunctional & Not Included in Surveillance.Caused by Penetrations Being Left Open at Time of Installation.Openings Sealed (← links)
- 05000272/LER-1982-040-03, /03L-0:on 820616,filter Failure Alarm Received on containment-plant Vent Radioactivity Monitor.Caused by Exhausted Filter Paper Supply Roll Due to Clearing Filter in Fast Mode.New Roll Installed.Personnel Counseled (← links)
- 05000272/LER-1982-039-03, /03L-0:on 820608,three Valves Found Missing from Surveillance Procedure Action Statement 3.6.1.1.Caused by Oversight.Immediate Change Incorporated Into Procedure (← links)
- 05000272/LER-1982-038-03, /03L-0:on 820604,pressurizer Pressure Discovered Less than Tech Spec Requirements.Caused by Shift of Pressure Controller from Auto to Manual Mode W/O Operator Action. Incident Termed Isolated Controller Malfunction (← links)
- 05000272/LER-1982-032-03, /03L-0:on 820515,boric Acid Flow in Transfer Pumps 11 & 12 Decreased Below Tech Spec Limit Rendering Pumps Inoperable.Caused by Increase in Impeller to Volute Clearance Due to Normal Wear.Clearance Adjusted (← links)
- 05000272/LER-1982-036-03, /03L-0:on 820526,control Room Emergency Air Conditioner 12 Failed to Operate.Caused by Tripped Load Ctr Supply Breaker 1C16Y de-energizing Fan Power Supply.No Cause Determined.Breaker Closed & Fan Returned to Svc (← links)
- 05000272/LER-1982-037-03, /03L-0:on 820526,svc Water Flow to Containment Fan Coil Unit 12 Found Below Tech Spec Requirements.Caused by Flow Control Valve 12SW223 Stuck in Closed Position.Valve Repaired (← links)
- 05000272/LER-1982-034-03, /03L-0:on 820510,steam Generator 14 Wide Range Level Indication Failed Low.Caused by Loose Fuse in Power Supply.Fuse Properly Tightened & Tested (← links)
- 05000272/LER-1982-028, Forwards Corrected LER 82-028/03L-0 (← links)
- 05000272/LER-1981-092-01, /01T-0:on 811020,during Routine Containment Insp, Operator Discovered Svc Water Leaking from Third from Top Secondary Coil on Containment Fan Coil Unit 15.Caused by Secondary Coil Failure.Leaking Coil Blank Flanged Off (← links)
- 05000272/LER-1982-014-03, /03L-0:on 820306,wind Speed Indications for 150 & 300-ft Elevations Failed.Local Indications Also Failed. Caused by iced-up Anemometers.Anemometers Thawed & Declared Operable (← links)
- 05000272/LER-1982-033-03, /03L-0:on 820502,travelling Screen High Differential Pressure Trip Alarm Received Concomitant W/Decreasing Condenser Vacuum.Caused by Grass & Debris Accumulation in Screen.Screen Cleaned (← links)
- 05000272/LER-1982-025-03, /03L-0:on 820501,steam Generator Wide Range Level Indication 13 Failed Low.Caused by Piece of Solid Wire Shorting Instrument Signal Lead to Conductor Shield.Wire Removed & Channel Satisfactorily Tested (← links)
- 05000272/LER-1982-030-03, /03L-0:on 820419,discovered That Valve 1WR81 Leakage Rate Greater than Max Range of Volumetric Test Equipment.Unable to Verify That Leakage Exceeded Tech Spec Limit.New Test Equipment W/Proper Range Will Be Purchased (← links)
- 05000272/LER-1982-027-99, During Surveillance Testing,Fire Pump 2 Did Not Start in Automatic Mode & Declared Inoperable.Caused by Damaged Flywheel.Flywheel Repaired (← links)
- 05000272/LER-1982-027, Forwards Corrected LER 82-027/99X-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-020-03, /03L-0:on 820405,on Two Occasions,Auxiliary Feedwater Storage Tank Contained Vol Decreased Below Tech Spec Limit.Caused by Failure to Initiate make-up to Tank Before Increasing Steam Generator Levels & Failure of 1DR6 (← links)
- 05000272/LER-1982-020, Forwards LER 82-020/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-023-03, /03L-0:on 820406,containment-plant Vent Radioactivity Monitors Became Inoperable When Air Supply to Valves 1VC8 & 1VC10 Tagged Out for Maint.Caused by Personnel Failure to Consider Loss of Air to Valves (← links)
- 05000272/LER-1982-023, Forwards LER 82-023/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-026-03, /03L-0:on 820409 & 13,boric Acid Storage Tanks 11 & 12 & Boron Injection Tank Boron Concentrations Decreased Below Tech Spec Limit.Caused by Leakage of Charging Water Past Damaged Seat on 1SJ4 (← links)
- 05000272/LER-1982-026, Forwards LER 82-026/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-024-03, /03L-0:on 820410,during Surveillance Testing,Svc Water Flow to Containment Fan Coil Unit 12 Was Less than Required.Caused by Stuck Flow Control Valve 12SW223.Valve Exercised (← links)
- 05000272/LER-1982-022-03, /03L-0:on 820405,svc Water Flow 14 Containment Fan Coil Unit Was Less than 700 Gpm Required.Caused by Decrease in Output Flow Control Valve 14SW57 High Speed Air Supply. Regulator Blown Down & Setpoint Readjusted (← links)
- 05000272/LER-1982-022, Forwards LER 82-022/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-021-03, /03L-0:on 820405,indication for 12 Steam Generator Steam Flow Channel 2 Failed High.Caused by Leakage from Loose Tubing Fitting on Flow Transmitter.Fitting Tightened, Transmitter Filled & Returned to Svc (← links)
- 05000272/LER-1982-021, Forwards LER 82-021/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-019-03, /03L-0:on 820329,fire Pump 2 Would Not Start in Automatic Mode.Caused by Failure of Voltage Regulator & Starter Motor.Regulator & Starter Replaced & Pump Returned to Svc (← links)
- 05000272/LER-1982-019, Forwards LER 82-019/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-013-03, /03L-0:on 820301,control Room Operator Closed Pressurizer Relief Valve 1PR1 When Valve 1PR2 Was Still Closed.Caused by Operator Error.Operator Counseled by Senior Shift Supervisor (← links)
- 05000272/LER-1982-013, Forwards LER 82-013/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-012-03, /03L-0:on 820223,operator Found Significant Amount of Chromated Water on Floor in Diesel Generator 1B Cubicle. Caused by Leakage on Right Side Jacket Water Heater.Jacket Water Heaters Replaced (← links)
- 05000272/LER-1982-012, Forwards LER 82-012/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-092, Forwards LER 81-092/01T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-081-03, /03L-0:on 810827,individual Rod Position Indicators for Control Rods 2A1,1SC1,1C2,1D4 & 2D2 Were in Disagreement W/Demand Position Indicators.Indicators Recalibr & 1SC1 Circuit Card Replaced (← links)
- 05000272/LER-1981-081, Forwards LER 81-081/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-082-03, /03L-0:on 810827,insulation Found Off Duct Outside Primary Sample Room Forming Penetration Barrier.Continuous Fire Watch Established.Insulation Reinstalled (← links)
- 05000272/LER-1981-082, Forwards LER 81-082/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-080-03, /03L-0:on 810824,containment Fan Coil Unit Indicated No Svc Water Flow in High Speed.Caused by Leak of Flow Transmitter 13SW72 from Hole in Weld on Pipe Flange. Pipe Flange Rewelded (← links)
- 05000272/LER-1981-080, Forwards LER 81-080/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-079-03, /03L-0:on 810824,monthly Surveillance Procedure 13.2.003 for Channel Check on Triaxial Time History Accelographs Had Been Overlooked.Caused by Misplacing of Insp Order Card.Procedure Performed & Personnel Counseled (← links)
- 05000272/LER-1981-079, Forwards LER 81-079/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1990-013, :on 900410,radiation Monitoring Sys Channel 1R12A Spiked Into Alarm,Resulting in ESF Actuation Signal. Caused by Failure of Electrical Signal Connectors &/Or Electronic Circuit Connections.Repairs Made (← links)
- 05000272/LER-1982-010-03, /03X-1:on 820201,temporary Hose Connection from Unit 1 Spent Fuel Pool to Unit 2 Exchanger Found Leaking on Auxiliary Bldg 84-ft Elevation.Caused by Improper Clamp Installation.Hose Disconnected (← links)
- 05000272/LER-1982-010, Forwards LER 82-010/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-008-03, /03L-0:on 820126,sample Results from Boric Acid Tanks Indicated Boric Acid Concentration Below Tech Specs. Refueling Water Storage Tank Low.Core Alterations & Positive Reactivity Changes Suspended.Level Adjusted (← links)
- 05000272/LER-1982-009-03, /03L-0:on 820118 & 25,switches for Cardox Fire Suppression Sys for 1A,1B & 1C Diesel Generator Areas & Fuel Oil Storage Tank Area 12 Had Been in Manual Position for Greater than 14 Days Due to Maint Outage (← links)
- 05000272/LER-1982-006-03, /03L-0:on 820113,air Particulate Detector Failed. Cause Not Stated.All Required Containment Purge & Pressure Vacuum Relief Penetrations Isolated.High & Low Speed Filter Paper Drives Replaced (← links)
- 05000272/LER-1982-006, Forwards LER 82-006/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-124-03, /03X-1:on 811123,undervoltage Relay on 2C Vital Bus Was Actuating at 35% Instead of 70% Trip Setpoint Value. Caused by Mechanical Sticking.Undervoltage Relay Cleaned & Tested (← links)
- 05000272/LER-1981-124, Forwards LER 81-124/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-001-03, Pressurizer Overprotection Sys Valve 1PR1 Was Isolated Due to Leakage. on 820107,while Draining Rcs,Valve 1RP2 Would Not Open. Caused by Generic Problem.Reactor Vessel Head Removed (← links)
- 05000272/LER-1982-001, Forwards Revised LER 82-001/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-002-01, /01T-0:on 820119,indications of Tube Thinning Were Detected by Eddy Current Exam.Steam Generators 12 & 14 Required Two & Three Sample Insp,Respectively.All Defective Tubes & Tubes Degraded Above 30& Plugged (← links)
- 05000272/LER-1982-003-03, /03L-0:on 820106,1B & 1C Diesels Locked Out, Rendering Diesels Inoperable at Same Time.On 820106,diesel Generator 1C Declared Inoperable While Diesel 1B Out of Svc for Maint.Caused by Misinterpretation of Lockout Switch Tag (← links)
- 05000272/LER-1982-004-03, /03L-0:on 820109,primary Coolant Water Sample Results Indicated Excessive Boron Concentration,Constituting Positive Reactivity Change.Caused by Water Draining Out of Steam Generator Tubes.Rcs Rapid Boration Initiated (← links)
- 05000272/LER-1981-083-03, Svc Water Leak Noticed from Bottom of Reducing Tee Near Supply Valve 12SW913 to Charging Pump 12 Oil Cooler.Caused by Internal Corrosion & Erosion in Reducing Tee.Tee Replaced & Pump Tested (← links)
- 05000272/LER-1981-083, Forwards Corrected LER 81-083/03X-1.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-122-03, /03L-0:on 811229,during Surveillance Test for Wet Pipe Sprinkler Flow for Svc Bldg,Audible Alarm Emitted Only Continuous Tone.Caused by Mechanically Jammed Encoder. Mechanism Unjammed & Tested Successfully (← links)
- 05000272/LER-1981-122, Forwards LER 81-122/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-121-03, /03L-0:on 811228,svc Water Leak Discovered in Containment Fan Coil Spool Piece Between Valves 125W57 & 125W58 in 78-ft Evaluation North Penetration Area.Cause Not Stated.Spool Will Be Changed to Stainless Steel (← links)
- 05000272/LER-1981-114-01, /01X-2:on 811208,svc Water Discovered Leaking from Top Secondary Cooling Coil on Containment Fan Coil Unit 11. Caused by Secondary Coil Failure.Coil Repaired W/Belzona Metal Filler & Tested Satisfactory (← links)
- 05000272/LER-1981-114, Forwards LER 81-114/01X-2.Detailed Event Rept Encl (← links)
- 05000272/LER-1981-115, Corrected LER 81-115/03L-0,on 811120,during Normal Power, Operator Received Feed Flow Plus Steam Flow Alarm & Noticed Steam Generator 13 Level Dropping.Associated Bistables Tripped;Steam Flow Channel 2 Transmitter Replaced (← links)
- 05000272/LER-1981-118-01, /01T-0:on 811226,svc Water Discovered Leaking from Second from Bottom Primary Coil on Containment Fan Coil Unit 11.Coil Isolated by Installation of Blank Flange Insert Between Svc Water Inlet Flanges (← links)
- 05000272/LER-1981-118, Forwards LER 81-118/01T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-115-01, /01X-2:on 811125,during Routine Containment Insp, Svc Water Discovered Leaking from Second from Top Primary Cooling Coil on Containment Fan Coil Unit 24.Leak Repaired W/Belzona Metal Filler (← links)
- 05000272/LER-1981-119-03, /03L-0:on 811206,svc Water Leak Found on Charging Pump 12 on Return Line of Oil Cooler & Charging Pump Rendered Inoperable.Caused by Corrosion within Pipes.Carbon Steel Pipe Tee Replaced (← links)
- 05000272/LER-1981-119, Forwards LER 81-119/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-117-03, /03L-0:on 811130,auxiliary Alarm Typewriter Inoperable Because Carriage Would Not Move.Caused by Disconnected Spring.Spring Replaced (← links)
- 05000272/LER-1981-117, Forwards LER 81-117/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-115-03, /03L-0:on 811120,feed Flow Greater That Steam Flow Alarm Received & Steam Generator Level Found Dropping. Caused by Failure of Steam Generator Steam Flow Channel 2 Due to Transmitter Failure (← links)
- 05000272/LER-1981-108-01, /01T-0:on 811124,svc Water Found Leaking from Third from Bottom Primary Coil on Containment Fan Coil Unit (Cfcu).Cfcu Declared Inoperable on 811125.Caused by Coil Failure.Coil Blank Flanged Off (← links)
- 05000272/LER-1981-108, Forwards LER 81-108/01T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-109-01, /01T-0:on 811128,svc Water Found Leaking from Fourth from Bottom Cooling Coil on Containment Fan Coil Unit Cfcu at 0.8 Gpm.Cfcu Declared Inoperable on 811129.Caused by Coil Failure.Coil Repaired W/Metal Filler (← links)
- 05000272/LER-1981-109, Forwards LER 81-109/01T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-112-03, /03L-0:on 811106,auxiliary Feed Storage Tank Afst Found Below Min Level.Caused by Use of Afst to Feed Steam Generators Following Reactor Trip.Demineralized Water Makeup Initiated (← links)
- 05000272/LER-1981-112, Forwards LER 81-112/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-113-03, /03L-0:on 811108,steam Generator Level 14 Channel 3 Failed High.Caused by Dual Comparator Failure.Comparator Replaced (← links)
- 05000272/LER-1981-111-03, /03L-0:on 811106,containment Fan Coil Unit 11 Failed to Start in Low Speed Mode After Safety Injection Signal.Caused by Failure of Automatic Trip Shutter on Low Speed Circuit Breaker to Close When Breaker Racked in (← links)
- 05000272/LER-1981-113, Forwards LER 81-113/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-111, Forwards LER 81-111/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-105-01, /01T-0:on 811117,svc Water Leak of Approx 1 Gpm Observed in Containment Fan Coil Unit 12.Caused by Hole in Upper Primary Cooling Coil.Coil Repaired by Brazing (← links)
- 05000272/LER-1981-105, Forwards LER 81-105/01T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-106, Forwards LER 81-106/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-073-03, /03L-0:on 810722,control Operator Noticed Channel 1 of Containment Pressure hi-hi Indicators Spiking.Caused by Steam Leak from Nearby Steam Generator Blowdown Line Blowing on Containment hi-hi Channel 1 Transmitter (← links)
- 05000272/LER-1981-073, Forwards LER 81-073/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-102-03, /03L-0:on 811021,discovered Inoperable Power Operated Relief Valve in Violation of Amend 39 to Tech Specs.Amend 39 Posted & Power Removed from Valves (← links)
- 05000272/LER-1981-102, Forwards LER 81-102/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-104-03, /03L-0:on 811026,steam Generator 13 Steam Flow Channel 1 Discovered Indicating High.Caused by Transmitter Being Out of Calibr.Transmitter Recalibr (← links)
- 05000272/LER-1981-104, Forwards LER 81-104/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-097-01, /01T-0:on 811106,boron Injection Tank Inlet Valves 1SJ4 & 1SJ5 Failed to Open Fully.Caused by Boron Buildup Around Stem.Boron Removed & Torque Settings Increased (← links)
- 05000272/LER-1981-096-01, /01T-0:on 811107,during Insp,Svc Water Discovered Leaking from Containment Fan Coil Units 11 & 15.Cause Not Stated.Leak on Unit 15 Repaired W/Belzona Metal Filler. Coil on Unit 11 Isolated by Installing Blank Flange Insert (← links)
- 05000272/LER-1981-096, Forwards LER 81-096/01T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-101-03, /03L-0:on 811021,while Cycling Pressurizer Auxiliary Spray Line Isolation Valve 1CV75 During Surveillance,Pressure in Pressurizer Dropped Below 2205 Psia.Caused by Incorrect Valve Liftoff Pressure Setting (← links)
- 05000272/LER-1981-099-03, /03L-0:on 811022,containment Fan Coil Unit 12 Was Indicating Low Flow in Low Speed Mode.Caused by Flow Transmitter Plugged W/Silt.Transmitter Blown Down & Tested Satisfactorily (← links)
- 05000272/LER-1981-101, Forwards LER 81-101/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-099, Forwards LER 81-099/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-100-03, /03L-0:on 811019,during Startup Preparation, Neutron Level & Startup Rate Meters for Intermediate Range Nuclear Instrumentation Channel 1 Were Spiking from 0 to Full Scale.Caused by Failed Power Supply (← links)
- 05000272/LER-1981-100, Forwards LER 81-100/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-103-03, /03L-0:on 811025,intermediate Detector N-36 Failed.Caused by Failure of Detector High Voltage Power Supply.Power Supply Replaced (← links)
- 05000272/LER-1981-103, Forwards LER 81-103/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-094-01, /01T-0:on 811028,containment for Coil Unit 14 Declared Inoperable.Caused by 0.8 Gpm Leak in Fifth & Sixth Primary Coils.Leaks Repaired W/Belzona Metal Filler.Cooler to Be Replaced (← links)
- 05000272/LER-1981-094, Forwards LER 81-094/01T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-098-03, /03L-0:on 811017 & 29,following Reactor Trips, Auxiliary Feed Storage Tank Dropped Below Min Required Vol & Was Declared Inoperable.Caused by Steam Generator Makeup.Vol Restored W/Transfer of Demineralized Water (← links)
- 05000272/LER-1981-098, Forwards LER 81-098/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-095-03, /03L-0:on 811008,auxiliary Alarm Annunciator Was Printing Erroneous Alarms Rendering Containment Sump Level Monitoring Sys Inoperable.Caused by Loose Printed Circuit Card in Connector.Card Replaced (← links)
- 05000272/LER-1981-095, Forwards LER 81-095/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-093-03, /03L-0:on 810930,fire Pump Fuel Pump Shaft Had Broken Rendering Fire Pump 1 Inoperable.Engine Disassembled & Gears Inspected.Fuel Pump Removed.Engine & Pump Reconnected & New Fuel Pump Installed (← links)
- 05000272/LER-1981-093, Forwards LER 81-093/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-088-03, /03L-0:on 810918,battery Cable Clamp for Fire Pump 2 Found Cracked & Arcing.Caused by Equipment Failure. Battery Clamp Split & Nipple Vibrated Loose in Casing.Clamp Replaced & Nipple Removed,Reinstalled & Properly Tightened (← links)
- 05000272/LER-1981-088, Forwards LER 81-088/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-089-03, /03L-0:on 810918,determined That Leakage Rate on 100-ft Elevation Containment Air Lock Exceeded Limit.Caused by Damage to Inner & Outer Door Seals.Seals Were Replaced & Leak Rate Test Performed Satisfactorily (← links)
- 05000272/LER-1981-089, Forwards LER 81-089/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-087-04, /04L-0:on 810908,sea Turtles Removed from Circulating Water Sys Intake Trash Bars.Caused by Stressed Turtles Becoming Impinged on Bars.Trash Bars Will Be Observed & Cleaned When Necessary (← links)
- 05000272/LER-1981-087, Forwards LER 81-087/04L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-086-03, /03L-0:on 810909,containment Fan Coil Unit 11 Indicated No Svc Water Flow & Was Declared Inoperable.Caused by Silt Plugging Transmitter.Flow Transmitter Blown Down (← links)
- 05000272/LER-1981-086, Forwards LER 81-086/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-085-03, /03L-0:on 810902,charging Pump Declared Inoperable After Operator Noticed Svc Water Emanating from Leak on Oil Cooler.Caused by Leaks in Couplings in Svc Water Piping.Couplings Replaced (← links)
- 05000272/LER-1981-085, Forwards LER 81-085/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-084-01, /01T-0:on 810928,during Routine Containment Insp, Svc Water Discovered Leaking from Bottom Primary Coil on Number 11 Containment Fan Coil Unit.Caused by Primary Coil Failure.Leaking Coil Blank Flanged Off (← links)
- 05000272/LER-1981-084, Forwards LER 81-084/01T-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-071-03, /03L-0:on 810720,containment Fan Coil Unit Declared Inoperable.No Svc Water Flow Noted at High Speed & Insufficient Flow at Low Speed.Caused by Equipment Failure. Flow Transmitter FA-3543Z-1 Sensing Line Blown Clear (← links)
- 05000272/LER-1981-071, Forwards LER 81-071/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-070-03, /03L-0:on 810708,during Routine Calibr Check, Hydrogen Analyzer 12 Declared Inoperable.Caused by Drifting Out of Calibr.Analyzer Recalibr,Tested & Returned to Svc (← links)
- 05000272/LER-1981-070, Forwards LER 81-070/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-068-03, /03L-0:on 810626,fuel Handling Bldg Alarm on Fire Protection Annunciator Illuminated.Caused by Fire Alarm Pull Box in Fuel Handling Bldg Not Reset Properly.Fire Watch Established & Pull Box Reset (← links)
- 05000272/LER-1981-068, Forwards LER 81-068/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-066-03, /03L-0:on 810628,while Attempting to Place Containment Fan Coil Unit 13 in Svc,High & Low Speed Svc Water Flow Did Not Show Sufficient Flow to Meet Tech Specs. Caused by Transmitter 1FA-35412-1 Out of Calibr (← links)
- 05000272/LER-1981-066, Forwards LER 81-066/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-051-04, /04X-1:on 810501,dead Shortnosed Sturgeon Removed from 12A Circulating Water Intake Trash Bar.Fish Assumed to Be Dead Prior to Impingement (← links)
- 05000272/LER-1981-065-03, /03L-0:on 810624,while Attempting to Place Containment Fan Coil Unit 15 in Svc,Personnel Observed No Svc Water Flow Indication.Caused by Inlet Flow Transmitter 1FA-3176Z-1 Out of Calibr.Transmitter Replaced (← links)
- 05000272/LER-1981-065, Forwards LER 81-065/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-067-03, /03L-0:on 810703,svc Water Flow to Containment Fan Coil Unit 13 Was Erratic in High & Low Speeds.Caused by Missing Actuator Feedback Cotter Pin on Svc Water Flow Control Valve.Pin Replaced & Setpoints Adjusted (← links)
- 05000272/LER-1981-067, Forwards LER 81-067/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-061-03, /03L-0:on 810616,pressurizer Over Protection Sys Channel 1 Isolation Valve 1PR6 Was Closed to Isolate Leakage Through 1PR1.Caused by Steam Cutting of Valve Cage.Valve Cage Replaced (← links)
- 05000272/LER-1981-061, Forwards LER 81-061/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-063-03, /03L-0:on 810621,control Rod Bank Demand Indicator & Individual Rod Position Indicators for Control Rods 2D1 & 2D5 Were Found to Exceed Agreement Limits.Caused by Instrument Drift.Rod Position Indicators Recalibr (← links)
- 05000272/LER-1981-063, Forwards LER 81-063/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-002-01, /01T-0:on 830106,station Power Transformer 12 de-energized for Planned Maint.Loss of Power to Automatic Starting Feature on Both Diesel Fire Pumps Resulted.Caused by Oversight Due to Human Error.Personnel Counseled (← links)
- 05000272/LER-1983-001-03, /03L-0:on 830104,vital Bus 1B Tripped,Rendering RHR Loop Inoperable.Caused by Differential Relay Protection. Redundant RHR Loop Immediately Placed in Operation (← links)
- 05000272/LER-1982-089-03, /03L-0:on 821213,due to Excessive Leakage from Mechanical Seal,Rhr Pump 12 Declared Inoperable.Caused by Failure of Mechanical Seal.Seal Replaced & Surveillance Test Satisfactorily Performed (← links)
- 05000272/LER-1982-089, Forwards LER 82-089/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-092-03, /03L-0:on 821206,containment Air Particulate Monitor 1R11A Indication Found Failed Low.Caused by Channel Failure Due to Failed Scintillation Detector. Detector Replaced & Channel Tested Satisfactorily (← links)
- 05000272/LER-1982-092, Forwards LER 82-092/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-084-99, /99X-0:on 821011,diesel Generator Area Low Pressure Carbon Dioxide Sys Automatic Actuation Feature Disabled & Tagged Out for Planned Maint.Continuous Fire Watch W/Backup Fire Suppression Equipment Established (← links)
- 05000272/LER-1982-084, Forwards LER 82-084/99X-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-078-01, /01T-0:on 821017,during Routine Containment Purge, Air Particle Detector Sample Line Found Erroneously Capped During Partial Completion of Design Change Request ED-0014. Caused by Personnel Error.Air Particle Detector Repair (← links)
- 05000272/LER-1982-059-03, /03L-0:on 820809,source Range Neutron Flux Channel 1N31 Indication Failed Low.Channel Declared Inoperable Since Reactor Trip Breakers Open.Caused by Failure of High Voltage Power Supply.Power Supply Replaced (← links)
- 05000272/LER-1982-059, Forwards LER 82-059/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-060-03, /03L-0:on 820807,control Operator Attempting to Perform Containment Pressure Relief,Discovered Valve 1VC5 Would Not Open from Control Console.Caused by Failure of Control Air Solenoid Valve on Actuator.Solenoid Replaced (← links)
- 05000272/LER-1982-060, Forwards LER 82-060/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-057-03, /03L-0:on 820803,during Routine Operation, Circulator 13A Tripped Resulting in Rapid Load Reduction. Caused by Grass & Debris Clogging Travelling Screen.Screen Cleaned & Circulator Returned to Svc (← links)
- 05000272/LER-1982-057, Forwards LER 82-057/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-056-03, /03L-0:on 820802,during Performance of Procedure SP(o)4.0.5-P on Auxiliary Feed Pump 11,recirculation Valve 11AF40 Would Not Open.Caused by Isolated Low Side of Transmitter.Operator Counseled (← links)
- 05000272/LER-1982-056, Forwards LER 82-056/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1982-061-03, /03L-0:on 820811,svc Water Flow Indication for Containment Fan Coil Unit 13 Erratic.Caused by Silt Plugging High Side Sensing Line of Outlet Flow Transmitter.Sensing Lines Blown Down.Transmitter Returned to Svc (← links)
- 05000272/LER-1982-061, Forwards LER 82-061/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1983-035-03, /03L-0:on 830731 & 0812,100-ft Elevation Containment Air Lock Declared Inoperable.Door Failed Surveillance Testing Due to Leakage & Damaged Seal on Inner Door.Caused by Rapid Operation of Door (← links)
- 05000272/LER-1981-097, Supplemental LER 81-097/01X-1:on 811106,during Inadvertent Safety Injection Actuation,Boron Injection Tank Inlet Valves 1SJ4 & 1SJ5 Failed to Open Fully.Caused by Boron Buildup. Stems Cleaned.Design Change Implemented (← links)
- 05000272/LER-1983-021-03, /03L-0:on 830507,emergency Diesel Generator 1A Tagged Out Due to Broken Differential Current Relay.Caused by Personnel Accidentally Breaking Glass Relay Cover.Relay Cleaned (← links)
- 05000272/LER-1983-022-04, /04L-0:on 830513,estimated 131 Uci of Activity Released When 350 Gallons Low Level Radioactive Water Pumped Into Ground.Caused by Contaminated Piping Penetration Area. Control Measures Implemented (← links)
- 05000272/LER-1983-020-03, /03L-0:on 830506,pins Found Installed in Two Spring Hangers Supporting Resistance Temp Device Bypass Lines.Hanger Pins Removed & Tested & Procedure Developed for Lead Shielding Installation (← links)
- 05000272/LER-1982-078, Supplemental LER 82-078/01X-1:on 821017,during Routine Containment Purge,Abnormal Decrease of Radioactivity Levels Observed as Indicated by Containment Plant Vent Monitor. Caused by Sample Line Left Capped (← links)
- 05000272/LER-1983-019, Forwards LER 83-019/03L-0.Detailed Event Analysis Encl (← links)
- 05000272/LER-1981-090-03, /03L-0:on 810922,svc Water Found Leaking from Drain Valve 12SW124 Between Valve & Component Cooling Water Heat Exchanger 12.Caused by Crack in Dissimilar Metal Weld Between Valve Body & Carbon Steel Pipe.Pipe Plugged (← links)
- ML021190407 (redirect page) (← links)
- 05000272/LER-2002-004, For Salem Generating Station Unit 1 Regarding Manual Reactor Trip & Automatic Auxiliary Feedwater Actuation on Low Steam Generator Level Due to Feedwater Pump Runback (← links)
- 05000272/LER-2002-007, Regarding Core Alterations Performed Without Direct Communications (← links)
- 05000272/LER-2002-006, From Salem Generating Station Unit 1 Regarding as Found Values for Main Steam Safety Valve & Pressurizer Safety Valve Lift Setpoints Exceed TS Allowable Limits (← links)
- 05000272/LER-2002-005, Re Unexpected auto-start of Turbine Driven Auxiliary Feedwater Pump at Start of Refueling Outage (← links)
- 05000272/LER-2002-003, Generation Station Unit No. 1 Special Report - Waste Gas Oxygen Analyzer Inoperable Greater than 30 Days Due to Low Sensor Output (← links)
- 05000272/LER-2002-002, Re Containment Spray Additive Tank Exceeded Technical Specification Limit Allowable Outage Time (← links)
- 05000311/LER-2002-003, Re Failure to Maintain Elements of Salem Fire Protection Program (← links)
- 05000311/LER-2002-001, Re Technical Specification Shutdown Due to 2A Diesel Generator Being Inoperable (← links)