Pages that link to "05000301/LER-2012-001, Regarding Unit 2 Manual Reactor Trip"
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The following pages link to 05000301/LER-2012-001, Regarding Unit 2 Manual Reactor Trip:
Displayed 6 items.
- 05000301/LER-2012-001 (redirect page) (← links)
- 05000301/LER-2011-001 (← links)
- 05000301/LER-2006-002 (← links)
- 05000301/LER-2004-003 (← links)
- 05000301/LER-2001-002 (← links)
- 05000301/LER-2001-001 (← links)
- IR 05000266/2017001 (← links)
- ML12178A411 (redirect page) (← links)
- 05000301/LER-1982-004, Forwards LER 82-004/01T-0 (← links)
- 05000301/LER-1982-003, Forwards LER 82-003/03L-0 (← links)
- 05000301/LER-1982-007, Forwards LER 82-007/03L-0 (← links)
- 05000301/LER-1982-005, Updated LER 82-005/01T-1:on 820727,discovered 2 of 3 Level Instruments on C Boric Acid Storage Tank Powered from Common Source.Cause Not Determined Due to Poor Early Maint of Documents.Wiring Corrected (← links)
- 05000301/LER-1982-006, Forwards LER 82-006/03L-0 (← links)
- 05000301/LER-1989-010, Forwards LER 89-010-00 Describing Generation of Containment High Pressure Signal During Leak Testing of Containment Penetrations for Facility (← links)
- 05000301/LER-1993-004, Forwards LER 93-004-00 for Pbnp Re Operability Concern for Containment Accident Fan Bearing (← links)
- 05000301/LER-1983-002, Forwards LER 83-002/01T-0 (← links)
- 05000301/LER-1982-009, Forwards LER 82-009/01T-0 (← links)
- 05000301/LER-1995-001, Forwards LER 95-001 Re Inadvertent EDG Start.Rept Describes Situation That Caused Normal Power Supply Breaker for Unit 2 Train A,4160 Volt Safeguards Bus to Open (← links)
- 05000301/LER-1982-010, Forwards LER 82-010/03L-0 (← links)
- 05000301/LER-1983-001, Forwards LER 83-001/03L-0 (← links)
- 05000301/LER-1991-004, Revises Commitment in LER 91-004-00 Re Failure of Containment Isolation Valve 2-CC-767 to Pass Seat Leakage Tests in 10CFR50,App J,Per 911108 Insp.Entire Valve Will Not Be Replaced,Based on Adequate Overall Performance (← links)
- 05000301/LER-1992-001, Forwards LER 92-001-00.Rept Initially Submitted on 920317 as Improperly Numbered LER 92-003-00.Requests That LER 92-003-00 Be Withdrawn & Replaced W/Encl (← links)
- 05000301/LER-1992-005, Forwards LER 92-005-00,per TS 15.4.2.A.7(a) After Each ISI, Number of Tube Plugged or Repaired in Each SG Shall Be Reported to Commission as Soon as Practical. Rept Also Reported Per TS Table 15.4.2-1 & TS 15.4.2.A.7(b) (← links)
- 05000301/LER-1982-011, Forwards LER 82-011/03L-0 (← links)
- 05000301/LER-1997-001, Forwards LER 97-001-00,re Containment Structure Where Internal Containment Structural Members Could Have Damaged Containment Liner During Safe Shutdown Earthquake (← links)
- 05000301/LER-1992-007, Forwards LER 92-007-00 for Point Beach Nuclear Plant Re Automatic Starting of Emergency DG G02 Following de-energization of 4,160 Volt Safeguards Bus (← links)
- 05000301/LER-1992-006, Forwards LER 92-006-00 for Point Beach Nuclear Plant,Unit 2, Re Inadvertent Actuation of non-safeguards Equipment Lockout (← links)
- 05000301/LER-1981-002, Forwards Results of Metallographic Insp & Exam of Steam Generator Tube R15C73,as Committed to in LER 81-002/01T-01. Also Forwards Addl Rept on Evaluation of Apr 1981 Eddy Current Insp Results & Eddy Current Insp Maps (← links)
- 05000301/LER-1999-003, Forwards LER 99-003-00 for Point Beach Nuclear Plant,Unit 2. Rept Is Provided in Accordance with 10CFR50.73(a)(2)(i)(B), as Any Operation or Condition Prohibited by Plant Tech Specs (← links)
- 05000301/LER-1999-002, Forwards LER 99-002-00 Re Discovery That Cable Necessary to Provide Plant Parameter Required to Be Monitored for App R Safe SD Location Was Not Routed Independent of Appropriate Fire Zone.Commitments in Rept Indicated in Italic (← links)
- 05000301/LER-1999-001, Forwards LER 99-001-00,re Loss of Safeguards Electrical Bus During Refueling Surveillance Testing Which Resulted in Temporary Unavailability of One Train of Decay Heat Removal. Commitments Made by Util Are Identified in Italics (← links)
- 05000301/LER-1998-004, Forwards LER 98-004-00,which Describes Operation of Unit W/Eight Hour Average Reactor Thermal Output in Excess of Licensed Limit.Commitments Made within Ltr Encl (← links)
- 05000301/LER-1998-001, Forwards LER 98-001-00,describing Mispositioning Event Which Resulted in SG Venting Steam Outside Containment During Plant Heatup.Commitments Are Encl in Rept in Italics (← links)
- 05000301/LER-1998-002, Forwards LER 98-002-00 Re Serious Degradation of Reactor Coolant Pump Component Cooling Water Return Line Check Valve Which May Prevent Closure (← links)
- 05000301/LER-1998-003, Forwards LER 98-003-00,describing Discovery That Vent Valve from Reactor Coolant Drain Tank Which Had Been Placed on Increased Frequency Surveillance for Stroke Time Was Not Tested in Time Frame Required.New Commitments in Ital (← links)
- 05000301/LER-1988-001, Provides Complete Copy of LER 88-001-00 Re Reactor Trip Due to Malfunction of Instrument Bus Power Supply Mechanical Interlock to Replace LER Forms Attached to . Certain Info Missing from Page 1 of Subj Forms (← links)
- 05000301/LER-2020-001, Interim 10 CFR PART21 Withdrawal (← links)
- 05000301/LER-1998-004-01, :on 980424,operations W/Reactor Core Power Level Was in Excess of 1518.5 Mwt.Caused by Failure to Return FT-466V Input Parameter to Off Scan.Input FT-446V Was Removed from on Scan at Approx 1452 (← links)
- 05000301/LER-1989-004-01, :on 890820,reactor Tripped Following Turbine Trip Initiated by Generator Breaker Trip.Caused by Main Stepup Transformer Lockout & Loss of Electrical Load Due to Actuation of Relay.Transformer Returned to Svc (← links)
- 05000301/LER-1989-003-01, :on 890712,level Channel 2LE-934 Declared Inoperable & Fill Operation Suspended When Channel Indicated Spuriously.Caused by Moisture Intrusion Between Halar Insulator & Sensing Rod.Detector Replaced (← links)
- 05000301/LER-1989-002, :on 890329,unit Experienced Main step-up Transformer Lockout Main Generator Breaker Trip & Concurrent Turbine & Reactor Trips.Caused by Wiring Error in Terminal Box 2-TB69.Repairs Completed (← links)
- 05000301/LER-1987-002-01, :on 870816,reactor Trip Occurred.Caused by Lightning Strike to Transmission Line Associated w/2X01 Transformers or Ground Near Transformers.Damaged Corona Ring of 2X01 Phase B Transformer Repaired (← links)
- 05000301/LER-1987-005, :on 871120,control Rod C7 Discovered to Be Out of Alignment.Caused by Blown Fuse.Quadrant Flux Tilt Verified & Found Acceptable.Fuse Replaced (← links)
- 05000301/LER-1987-004-01, :Degradation of Steam Generator Tubes Noted During Eddy Current Exam Conducted on 871008-22.One Tube Weld Repaired.Remaining Tubes Left as Found Due to Minimal Leakage Observed & Hazards Associated W/Repair (← links)
- 05000301/LER-1989-001, :on 890203,operator Dicovered Both Supply Breakers in Open Position Due to Simultaneous Automatic Turbine Runback.Cause Not Positively Identified.Efforts Will Be Made to Ease Difficulty W/Supply Breakers (← links)
- 05000301/LER-1987-003-01, :on 870818,two MSIVs Discovered W/O Dc Control Power Needed to Trip Valves Closed.Caused by Personnel Error.Operation of MSIVs Restored to Complete Clearing Red Tag Series & Dc Power Breaker Closed (← links)
- 05000301/LER-1998-001-01, :on 980202,SG Vent Mispositioned During Plant Heatup Were Noted.Caused by Inadequate Procedure Coordination.Subject Vent Valve Was Closed Approx 0928 on 980202 (← links)
- 05000301/LER-1998-002-01, :on 980313,discovered Serious Degradation of Reactor Coolant Cooling Water Return Line Check Valve.Caused by Service Related Wear.Valve Was Opened,Repaired & Returned to Service (← links)
- 05000301/LER-1998-003-01, :on 980408,ASME Section XI Pressure Test Program Surveillance Was Missed.Caused by Failure to Consult Latest Rev of Increased Frequency Surveillance List. Condition Rept Will Be Written to Document Requirement (← links)
- 05000301/LER-1986-007, :on 861009-22,eddy Current Insp of Steam Generator Tubes Conducted.Eight Tubes Degraded Equal to or Greater than 40% & Six W/Undefined Signal.All 58 Tubes Plugged (← links)
- 05000301/LER-1986-006, :on 861002,04 & 08,reactor Trip Signals Generated.Caused by Blown Fuse,Erroneous Voltage on Signal Cable & Voltage Fluctuation on Instrument Bus,Respectively. Procedures for Instrument Tests Revised (← links)
- 05000301/LER-1987-001, :on 870205,steam Flow/Feedwater Flow Mismatch Setpoint for Reactor Trip Found in Violation of Tech Spec. Caused by Failed Electrolytic Capacitor in Square Root Converter Module FM-475B.Module Repaired (← links)
- 05000301/LER-1999-001-01, :on 990211,EDG Output Breaker Failed to Remain Closed During Surveillance Testing.Caused by Breaker Control Switch Failing to React Quickly.Modified Closing Circuit for EDG Output (← links)
- 05000301/LER-1985-002-02, :on 851017,during Eleventh Refueling Outage, Total as-found Leakage Exceeded Tech Spec Limit of 0.06 La. Caused by Failure of Containment Isolation Valve 2-755A. Valve Inspected & Parts Repaired (← links)
- 05000301/LER-1986-008, :on 861128,reactor Tripped During Beginning of Life Physics Test.Caused by Low Water Level in Steam Generator A.Event Will Be Discussed in Normal Training Cycle for Licensed Operators in Next Training Cycles (← links)
- 05000301/LER-1986-003, :on 860603,turbine Runback Occurred Due to Loss of Power on Instrument Bus.Caused by Trip of White Inverter Output Breaker.Procedures for Placing Inverter on Line Will Be Revised by 860901 (← links)
- 05000301/LER-1988-002-01, :on 881008,automatic Reactor Trip Occurred. Caused by Missing Wire in Source Range Preamplifier Assembly.Procedure OP-3B Revised to Clarify Expected Responses of Stated Annunciators (← links)
- 05000301/LER-1999-002-01, :on 990323,discovered That Red Channel of SG Pressure Indication Passes Through Fire Zone.Caused by 1983 Modification Oversight.Twice Per Shift Fire Round Has Been Established for Fire Zone Pending Cable Routing Correction (← links)
- 05000301/LER-1985-002-03, :on 851017,reactor Coolant Pump Component Cooling Supply Line Check Valve Leakage Exceeded Tech Spec Limits.Caused by Valve Deficiencies.Valve Inspected & Repairs Made on Internal Parts (← links)
- 05000301/LER-1997-004-01, :on 970729,declared RHR Loop Inoperable Due to CCW Leak.Caused by Failure of RHR Heat Exchanger CCW Piping. Repaired Piping & Declared RHR Loop Operable (← links)
- 05000301/LER-1997-005-01, :on 970806,RHR Pump Was Declared Inoperable Due to Abnormal Seal Leakage from Loop a RHR 2P-10A.Repaired RHR Pump (← links)
- 05000301/LER-1990-002-01, :on 901009,inadvertent Start of Auxiliary Feedwater Pumps Occurred (← links)
- 05000301/LER-1986-002-01, :on 860430,control Operator Noticed That Analog RPI for Shutdown Bank B Misaligned.Shutdown Bank B Withdrawn.Cause Could Not Be Confirmed But Failure of Mechanical Demand Counter Suspected (← links)
- 05000301/LER-1986-001-01, :on 860429,during Routine Test of Reactor Trip a Logic Circuits,Technician Inadvertently Tripped Reactor Trip Breaker B After Closing Bypass Breaker A.Caused by Personnel Error.Test Procedure Revised (← links)
- 05000301/LER-1999-003-01, :on 990505,licensee Personnel Discovered That Refueling Interval Surveillance of Emergency Lighting Required by TS 15.4.6.A.3 Was Not Conducted.Cause Unknown. Task Sheet call-ups for Both Procedures Have Been Created (← links)
- 05000301/LER-1988-001-01, :on 880407,reactor Trip Occurred & Safety Injection Initiated Due to Low Pressurizer Pressure Signal. Caused by Procedure Inadequacy,Personnel Error & Design Deficiency.Instrument Bus Power Returned to Normal Supply (← links)
- 05000301/LER-1987-006, :on 871219,handwheel Gag on Instrument Air Containment Isolation Valve Found to Be Partially Engaged. Caused by Misjusted Valve.Gag Immediately Removed & Valve Tested to Verify Operability (← links)
- 05000301/LER-1997-002-01, :on 970415,potential Reactor Coolant Sys Branch Connection Stresses Beyond Design Basis,Indicated.Caused by Mod Initiated to Remove RTD Bypass Line Isolation Valves. Stress Analysis Conducted on RTD Bypass Piping (← links)
- 05000301/LER-1985-005-01, :on 851231,reactor Trip Occurred Due to Loss of Electrical Load.Caused by Failed Lightning Arrestor. Lightning Arrestor Replaced,Msiv Repaired & Tested & Fast Bus Transfer Circuitry Response Verified (← links)
- 05000301/LER-1985-002-01, :on 851022,reactor Coolant Pump a Component Cooling Water Supply Containment Isolation Valve 755A Found Leaking in Excess of Tech Spec Limit.Cause Unknown.Valve Lapped & Returned to Svc (← links)
- 05000301/LER-1985-003-01, :on 851022,exam of Steam Generator Tubes Revealed 53 Tubes Degraded Equal to or Greater than 40% & One Tube W/Undefined Signal.Cause Unstated.Tubes Plugged (← links)
- 05000301/LER-1985-004-01, :on 851028,failed Fuel Rod Cladding Discovered in Assemblies L56 & L59.Caused by Vibration of Rods Against Grid,Grid Springs & Baffle Plate Due to Water Impingement Through Core Baffle Joint Openings (← links)
- 05000301/LER-1997-001-01, :on 970107,containment Liner Clearance Was Not IAW Plant Design Basis.Caused by Void Between Containment Liner & Concrete Containment Structure.Inspected Containment (← links)
- 05000301/LER-1996-002-01, :on 961009,RHR Loop Declared Inoperable Due to CCW Leakage.Remaining Relief Valve Lines in CCW Sys Were Reviewed (← links)
- 05000301/LER-1996-003-01, :on 961026,TS Chemistry Sampling of RCS Suspended During SG Replacement.Caused by Util Personnel Decision Based on TS Definitions & Defined Allowances.Rcs Sampling Resumed on 961108 (← links)
- 05000301/LER-1992-007-01, :on 921026,inadvertent ESF Actuation Occurred as Result of Improper Surveillance Testing.Caution Label Installed in Vicinity of Undervoltage Relay Test Button (← links)
- 05000301/LER-1992-006-01, :on 921020,inadvertent ESF Actuation Occurred as Result of as-built Wire Tracing & Disconnected Output from 2B04 Lockout Relay.Cabling Reconnected on 921020 (← links)
- 05000301/LER-1985-001-01, :on 850516,20% Runback from 100% Power Experienced.Power Range Nuclear Instrumentation Sensed Voltage Spike & Reacted by Activating Dropped Rod Turbine Runback.Caused by Inadvertent Jumper Grounding (← links)
- 05000301/LER-1996-001-01, :on 960518,reactor Trip Occurred Due to Spurious Closure of Turbine Stop Valves.Caused by Equipment Failure.Extensive Troubleshooting Performed,Valve Examined in Place,Removed & Replaced (← links)
- 05000301/LER-1992-005-01, :on 921022,SG Tube Degradation Revealed.Tubes Plugged (← links)
- 05000301/LER-1992-003, :on 920918,Train a of Unit 2 Containment Spray Sys Rendered Inoperable.Caused by Spray Pump Impeller Suction Blocked by Foam Rubber Plug.Containment Spray Sys & Safety Injection Sys Remained Operable (← links)
- 05000301/LER-1992-004-02, :on 920926,reactor Manually Tripped During Hot CR Drop Testing Due to Unexpected CR Buttom Indications. Caused by Lack of Communication.Cr Testing Terminated. Procedure Resp 1.1 Will Be Revised (← links)
- 05000301/LER-1992-003-02, :on 920918,abnormal Noise Heard Emanating from Containment Spray Pump P-14A During Test IT-06 Due to Pump Impeller Being Blocked.Pump Disassembled & Foam Rubber Plug Removed.Pump Reassembled & Declared Operable (← links)
- 05000301/LER-1984-007, :on 841108,while Performing Breaker Auxiliary Switch Wiring Insp,Emergency Diesel Generator Inadvertantly Actuated.Caused by Personnel Errors.Breaker Shut to Restore Normal Power (← links)
- 05000301/LER-1984-004-01, :on 840928,inadvertent Reactor Protection Sys Trip Occurred When Instrument Fuses for Source Range Channel 31 Removed W/O Bypassing Trip Function.Caused by Personnel Error (← links)
- 05000301/LER-1992-002-01, :on 920828,discovered That CCW Sys Isolation Valves LW-63 & 64 Not Capable of Performing Intended Function.Caused by Inadequate Design Review.Ccw Sys Boundary Outside Containment Reestablished (← links)
- 05000301/LER-1991-007-01, :on 911110,DHR Requirement Violated During SG Crevice Cleaning.Caused by Inadequate Procedural Guidance. Need to Continue Performing SG Crevice Cleaning Procedure Will Be Assessed (← links)
- 05000301/LER-1984-008, :841005,containment Isolation Valve Leakage in Excess of Tech Specs.Caused by Worn Bushing in Valve Assembly Causing Valve to Stick Open.Valve Repaired.W/ (← links)
- 05000301/LER-1984-006, :on 841023,inadvertent Actuation of Emergency Diesel Generator G02 Occurred.Caused by Accidental Closing of Contact on Loss of Voltage Relay 2-271X1/2A05 While Removing Insulating Matl (← links)
- 05000301/LER-1984-005-01, :on 841022,13.8 Kv Bus Tie Breaker Opened Prior to Shutting Station Auxiliary Transformer Output Breaker, Resulting in Loss of Offsite Power.Caused by Operator Error. Operator Trainees Reinstructed (← links)
- 05000301/LER-1995-006-01, :on 951125,PORV post-maint Testing Was Not Performed Prior to Establishing Ltop.Caused by Inadequate Control of post-maint Testing.Established TS Compliance by Venting RCS (← links)
- 05000301/LER-1992-001-01, :on 920217,one Channel of Overtemp Delta T Protection Rendered Inoperable During Performance of power- Range Axial Offset Calibr.Caused by Personnel Error.Channel Restored to Svc & Procedure Revised (← links)
- 05000301/LER-1995-005-01, :on 951025,plugged 46 Tubes Due to Degradation in Roll Transition,Tubesheet Crevice & Tube Support Plate Regions.Performed Closeout Insps Following Maint of Each Sg (← links)
- 05000301/LER-1995-004-01, :on 951026,inadvertent ESF Actuation Occurred as Result of Improper Relay Alignment.Assigned Addl Technician to Concurrently Check Proper Removal & Installation of Remaining Relays (← links)
- 05000301/LER-1991-006-01, :on 911217,when Panel D22 Deenergized,Reactor Trip Breaker Opened,Resulting in Reactor Trip & Actuation of Crossover Steam Dump Sys.Caused by Loose Cable Termination. All Terminations check-tightened (← links)
- 05000301/LER-1984-003, :on 840519,inadvertent Safety Injection Actuation Occurred While Decreasing RCS Pressure.Caused by Operator Failure to Block Safety Injection Prior to Actuation Setpoint.Reactor Shut Down (← links)
- 05000301/LER-1991-001-02, :on 910929,main Steam Isolation Valve Failed to Close.Caused by Degradation of Valve Operators.Investigation Was Performed to Assess MSIV Performance & Perceptions of Valve Performance (← links)
- 05000301/LER-1984-002-03, /03L-0:on 840424,operation W/Control Rods at 225 Steps Considered Violation by NRC Resident Inspector.Caused by Preventive Actions Re Wall Loss.Tech Spec Change Request Will Be Submitted (← links)
- 05000301/LER-1991-005-02, :on 911111,discovered Both High Head saftey- Injection Pump Breakers Were Racked In,Making Both Pumps Cognitive Errror.Review Conducted (← links)
- 05000301/LER-1984-001, :on 840223,pipe Snubber Id 2HS-M75 Removed for NUREG-0737 Mod Prior to Obtaining Tech Spec Change Allowing Removal.Snubber Reinstalled within 72 H.Tech Spec Change to Delete Snubber Initiated (← links)
- 05000301/LER-1991-005-01, :on 911111,determined That Both Safety Injection Pump Breakers Racked in W/Rcs Temperature Less than 270 F.Caused by Procedural Inadequacy.Operator Aids Will Be Installed in Vicinity of Subj Breakers (← links)
- 05000301/LER-1991-004-01, :on 911001,during Performance of Seal Leakage Test on Valve CC-767,required Test Pressure of 65 Psig Could Not Be Achieved.On 911008,as-found Leakage Rate Exceeded Ts.Mod Request Initiated (← links)
- 05000301/LER-1991-002-01, :on 911014,insp of SG Hot Leg Revealed Degraded Tubes.Results of 800 Psig Leak Test Were Satisfactory.All Tubes in Both a & B SGs Plugged (← links)
- 05000301/LER-1991-003-01, :on 911010,containment Hatch Temporary Third Door Blocked Open During Fuel Movement Due to Personnel Error.Outer Third Door Shut & Refueling Procedure Revised.W/ (← links)
- 05000301/LER-1995-003, :on 950307,turbine Runback & RT Resulted from Oil Leak & Subsequent Pressure Loss in Unit 2 Turbine Generator Eg Control Sys.Attempted to Tighten Union Joint & Maintained Level in Eg Oil Reservoir (← links)
- 05000301/LER-1995-002, :on 950304,loss of DC Control Power Resulted in Two Containment Accident Fan Coolers Being Inoperable.Caused by Short Circuit Due to Burned Out Indicating Lamp.Light Socket & Fuses Replaced (← links)
- 05000301/LER-1995-001-01, :on 950227,normal Power Supply Breaker for 4160 Volt Safeguards Bus 2A05 Was Inadvertently Tripped Open During Mod Work for Installation of Addl EDG Due to Cognitive Error.Recovered Affected Equipment (← links)
- 05000301/LER-1983-011-03, RHR Pump 2P10B Declared Inoperable Due to High Bearing Vibration Levels.Unit Placed in Degraded Mode.Cause Uncertain.Failed Pump Replaced (← links)
- 05000301/LER-1983-007-01, /01T-0:on 830523,higher than Normal Levels of I-131 in Primary Coolant Prompted Investigation of Fuel Assemblies.Probably Caused by Fretting at Bottom Spring Clip Grid Elevation Optimized Fuel assemblies,ZD3 (← links)
- 05000301/LER-1991-001-01, :on 910929,MSIVs Failed to Leave Fully Open Position During Attempt to Shut MSIVs from Control Room. Caused by Degradation of Valve Operators Due to Corrosion. Valve Operators Will Be Disassembled (← links)
- 05000301/LER-1982-010-03, /03L-0:on 821110,during Surveillance Test TS-11, Secondary Boric Acid Heat Tracing Circuits Found Inoperable. Caused by Internal Defect Which Tripped Breaker 1B52-429A. Breaker Replaced (← links)
- 05000301/LER-1994-002-01, :on 940713,quarterly TS Test of PORV Block Valve Not Performed.Caused by Improper Temporary Change to IST Procedure IT-25.Temporary Change Approved on 940707 (← links)
- 05000301/LER-1983-009-03, /03L-0:on 830817,during Inservice Test IT-04,pump 2P10B Declared Out of Svc Due to High Bearing Vibration Levels.Cause of High Vibration Uncertain.Pump Replaced (← links)
- 05000301/LER-1994-005-01, :on 941102,TS Violation Overtemperature at Minimum Degree of Redundancy Not Achieved.Caused by Condition of N42 Channel Not Identified Until Unit 2 Brought in Power.Delta T Channel Put in Trip Condition (← links)
- 05000301/LER-1983-004-01, /01T-0:on 830409,during Type B & C Leakage Test, Total as-found Leakage Exceeded Tech Spec Limit.Valve 755A Stuck Open Causing Leakage.Followup Valve Maint Did Not Identify Cause of Failure (← links)
- 05000301/LER-1983-008-01, /01T-0:on 830617,during Refueling,Containment Air Radiation Monitoring Sys Inoperable.Caused by Failed Sample Pump Due to Blown Fuse in Data Acquisition Monitor Circuit. Instrumentation Repaired (← links)
- 05000301/LER-1994-003-01, :on 941010,800 Psid Leak Test Was Performed & Tubes,Mechanical Plugs & Explosive Plugs Observed to Have Leakage.Closeout Insp Were Performed & Tubes Were Replaced (← links)
- 05000301/LER-1994-004-01, :on 941006,RCS Chloride Sample Taken Outside Periodicity Required by TS Due to Incomplete Communications. RCS Sampled & Chloride Concentration Verified to Be within Acceptable Limit (← links)
- 05000301/LER-1983-010-03, /03L-0:on 830713,discovered Turbine Bldg Structure Was Interfering W/South Nonreturn Valve Operator Weight Assembly,Preventing Proper Valve Operation.Caused by Loose Weight Assembly Sleeve (← links)
- 05000301/LER-1983-001-03, /03L-0:on 830316,while Performing Tech Spec Test TS-11,primary Boric Acid Heat Trace Circuit 2-P136 Discovered Inoperable.Caused by Failed Thermon Model SCR Circuit Controller.Circuit Controller Replaced (← links)
- 05000301/LER-1982-011-03, /03L-0:on 821212,steam Generator Pressure Transmitter 2PT-482 Indicating Higher than Other Channels Due to Frozen Sensing Line.Caused by Inadequate Interim Piping Insulation During Mod to Heat Tracing Sys (← links)
- 05000301/LER-1994-001, :on 940323,identified Potential FW Flow Measurement Inaccuracies Due to Degradation in Signals from Leading Edge Flow Meter Transducers.Permanent Changes Made to Reactor Engineering Procedures 1.4 & 6.2 (← links)
- 05000301/LER-1983-003-01, /01T-0 Has Been Cancelled (← links)
- 05000301/LER-1983-005-01, /01T-0:on 830428,body-to-bonnet Leak on a Loop RTD Bypass Isolation Valve RC-559A & Boric Acid Wastage of Four Studs Discovered.Leakage Caused Stud Wastage.Studs & Nuts Replaced & Valve on Other Loop Examined (← links)
- 05000301/LER-1983-006-03, /03L-0:on 830419,time Delay Setpoint of Contact from Time Delay Relay 2-TDRC/A06 & 4,160-volt Degraded Grid Voltage Relay 2-275/A06 Set Above Tech Spec Limit.Caused by Bumping or Mispositioning Time Set Knob (← links)
- 05000301/LER-1982-009-01, /01T-0:on 821122,axial Flux Differential Monitoring Program & Alarm Found Inadvertently Halted from 821120-22 W/O Manually Logging Flux Differential.Caused by Operator Diagnosing Backup Computer Problem (← links)
- 05000301/LER-1990-005-01, :on 901213,condensate Pumps & Heater Drain Tank Pumps Tripped When Operator Accidentally Actuated Relay 2CPAX.Caused by Inappropriate Relay Installation Location & Personnel Error.Plant Mod Request Generated (← links)
- 05000301/LER-1982-007-03, /03L-0:on 820925,during Inservice Test of Pressurizer PORV & Block Valves,One of Two PORV Discovered Inoperable.Caused by Inadequate Work Procedure Performed Months Earlier Due to Closed Valve in Instrument Air Line (← links)
- 05000301/LER-1982-006-03, /03L-0:on 820728,during Pipe Restraint Welding to Section of Chemical & Vol Control Sys Divert Line Piping, Pinhole Leak Developed in Pipe Adjacent to Weld.Caused by Welding Process.Hole Repaired & Hydrostatically Tested (← links)
- 05000301/LER-1993-005-01, :on 931119,molded Case Circuit Breakers Failed Test Due to Grease Solidification.Caused by age-related Grease Solidification in MCCB Tripping Mechanism.Mccb Tested & Schedule for Replacement (← links)
- 05000301/LER-1982-005-01, /01T-0:on 820727,discovered Two of Three Level Instruments on Boric Acid Storage Tank C Powered from Common Source.Cause Unknown Due to Lack of Maint Documentation.Wiring Will Be Charged to Correct Problem (← links)
- 05000301/LER-1990-004-01, :on 901031,actuation of Containment Fan Coolers Svc Water Valve Occurred (← links)
- 05000301/LER-1978-010-01, /01T-0 on 780928:reactor Coolant Sys Pressure Began Dropping at 25 Psi Per Minute;Pressurizer Spray Value 431B Found Partially Open Despite Shut Signal Due to 0 Set Point Drift Caused by Heat Degradation in Transducer (← links)
- 05000301/LER-1978-009-03, /03L-0 on 780913:on 2 occasions,2 of 3 Charging Pumps Were isolated.2 3/4 Crosby Relief Valves Leaked Through Causing Temporary Loss of Charging Flow.Charging Pump Relief Valve Replaced & a Pump Returned to Svc (← links)
- 05000301/LER-1978-009, Forwards LER 78-009/03L-0 (← links)
- 05000301/LER-1978-010, Forwards LER 78-010/01T-0 (← links)
- 05000301/LER-1989-010-01, :on 891008,first Out Containment Pressure Trip Signal Unexpectedly Generated During Course of Routine Refueling Outage Leak Test (← links)
- 05000301/LER-1993-004-01, :on 931102,operability Concern for Containment Accident Fan Bearing Due to Discovery of Nylon Cage Found in Bearing.Replaced Bearing W/One Containing Bronze Cage (← links)
- 05000301/LER-1990-003-01, :on 901023,degradation of Steam Generator Tubes Occurred (← links)
- 05000301/LER-1982-004-01, /01T-0:on 820601,combined Leakage Rate of Type B & C Tests for 1-inch Check Valve in Containment Air Particulate/Gas Radiation Monitor (R11/R12) Exceeded Tech Spec Limit.Caused by Accumulation of Foreign Matter (← links)
- 05000301/LER-1982-003-03, /03L-0:on 820510,during Periodic Testing of Safeguards Protective relays,4 Kv Undervoltage Relays Were Outside Tech Spec Limits.Caused by Limitations of Relays. Relays Adjusted (← links)
- 05000301/LER-1982-002-01, /01T-0:on 820428,during Eddy Current Exam, Discovered Abnormal Degradation in Fuel Cladding,Rcpb & Primary Containment.Seludge Lancing Will Be Performed (← links)
- 05000301/LER-1982-002, Forwards LER 82-002/01T-0 (← links)
- 05000301/LER-1982-001-03, /03L-0:on 820203,boric Acid Heat Tracing Circuit P-42 Found Inoperable.Caused by Failed Thermon Type 4 Circuit Controller.Circuit Controller Replaced (← links)
- 05000301/LER-1982-001, Forwards LER 82-001/03L-0 (← links)
- 05000301/LER-1993-003-01, :on 930328,Point Beach Unit 2 Tripped Due to Surveillance Testing Problems.Test Procedures Can Trip Unit Due to Equipment or Human Failure.Failure Tests Delayed Until Unit 1 & Knpp Restored to Power (← links)
- 05000301/LER-1990-001-01, :on 900405,auxiliary Feed Pump Inadvertently Started.Caused by Inadequate Design.Schematic Push to Test Lamp Circuitry Will Be Added to Elementary Wiring Diagrams & Personnel Briefed on Potential Circuitry (← links)
- 05000301/LER-1993-002-01, :on 930328,reactor Trip Occurred During Performance of TS Test TS-4A, Turbine Trip Test (Monthly) Unit 2. Caused by Procedural Noncompliance & Matl Condition of Valve.Test Terminated & Handwheel Inspected (← links)
- 05000301/LER-1993-002, Forwards LER 93-002-00 Re Reactor Trip Which Occurred During Performance of Thrust Bearing Trip Test Portion of TS Test TS-4A, Turbine Trip Test (Monthly) Unit 2 (← links)
- 05000301/LER-1993-001-02, :on 930127,discovered Failure of SG Sample Isolation Valve to Fully Shut.Caused by Inadequate Compression in Operator Spring.Operator Spring Compression Was Increased by Turning Adjustment Screw (← links)
- 05000301/LER-1981-008-01, /01T-0:on 811022,valve 2SI-866A,high Head a SI Pump Discharge Valve,Indicated Shut Position.Possibly Caused by Operator Inattentiveness During Replacement of Ready Status Light.Operators Cautioned (← links)
- 05000301/LER-1981-008, Forwards LER 81-008/01T-0 (← links)
- 05000301/LER-1994-001-01, :on 940323,identified That Feedwater Flow May Have Been Underestimated Since Beginning of Operating Cycle. Caused by Degradation of Signals from Transducers.Transducer Replaced (← links)
- 05000301/LER-1990-002, :on 901009,inadvertent Start of Auxiliary Feedwater Pump Occurred.Caused by Inadequate Test Procedures.Auxiliary Feedwater Pump Secured & Maint Work Request Mwr 904517 Initiated (← links)
- 05000301/LER-1982-008-03, /03L-0:on 821006,low Steam Line Pressure Setting for Pressure Instrument 2PT-478 Found Lower than Allowed by Tech Specs.Caused by Bumping of Setpoint Adjustment Knob.Instrument Tested & Realigned (← links)
- 05000301/LER-1982-008, Forwards LER 82-008/03L-0 (← links)
- 05000301/LER-1981-007-03, /03L-0:on 810902,boric Acid Heat Trace Circuit P131 Found Inoperative.Caused by Failed Fuse Holder.Fuse Holder Replaced & Boric Acid Heat Trace Circuit Returned to Svc (← links)
- 05000301/LER-1981-007, Forwards LER 81-007/03L-0 (← links)
- 05000301/LER-1981-006-03, /03L-0:on 810803,during Routine Calibr Check of Pressurizer Level Instrumentation,One Channel Found Outside Tech Spec Range.Caused by Zero Drift of Level Transmitter Calibr.Instrument Adjusted.New Calibr Procedure Formalized (← links)
- 05000301/LER-1981-006, Forwards LER 81-006/03L-0 (← links)
- 05000301/LER-1981-005-03, /03L-0:on 810625,during Normal Operation, Contractor Accidently Tripped Turbine Overspeed Trip Valve on Auxiliary Feedwater Pump.Valve Reset.Contractors Removed from Area & Reminded to Use Caution (← links)
- 05000301/LER-1981-005, Forwards LER 81-005/03L-0 (← links)
- 05000301/LER-1981-004-01, /01T-0:on 810529,during Maint Shutdown,Msiv 2CV-2017 Failed to Shut.Caused by Two Vent Valves for Air Operator Failing to Open.Valves Replaced (← links)
- 05000301/LER-1981-004, Forwards LER 81-004/01T-0 (← links)
- 05000301/LER-1981-003-01, /01T-0:on 810526,steam Generator 2A Blowdown Sample Isolation Valve Failed to Close Upon Actuation.Caused by Excessive Stem to Packing Friction Due to Dried Out Packing.Packing Gland Adjusted & Valve Stem Lubricated (← links)
- 05000301/LER-1981-003, Forwards LER 81-003/01T-0 (← links)
- 05000301/LER-1980-009-03, /03L-0:on 801101,during Normal Operation, Performance of ICP 2.14 Found P8 Permissive Bistable from Channel N44 to Be Set at 50.5%.Caused by Instrument Drift. Bistable Adjusted & Tested Satisfactorily (← links)
- 05000301/LER-1980-009, Forwards LER 80-009/03L-0 (← links)
- 05000301/LER-1989-009-01, :on 891115,unexpected Steam Generator a lo-lo Level & Steam Generator B lo-lo Level Reactor Trip Signals Experienced.Caused by Installation of Analog Signal Generator.Procedures Revised (← links)
- 05000301/LER-1981-002-01, /01T-0:on 810420,leaking Plug Detected in Steam Generator a & Degraded & Defective Tubes Found in Each Steam Generator During Eddy Current Exam of First Support Plate on 810426.Cause Not Stated.Eddy Current Insp Results Encl (← links)
- 05000301/LER-1981-001-03, /03L-0:on 810324,steam Generator Loop a Pressure Safeguards Actuation Setpoint Found Below Tech Spec.Caused by Setpoint Drift in Foxboro Model 63U-BC-OHCA-F Bistable. Bistable Replaced (← links)
- 05000301/LER-1981-001, Forwards LER 81-001/03L-0 (← links)
- 05000301/LER-1980-010-03, /03L-0:on 801117,safety Injection Pump 2P15A Motor & Pump Shaft to Coupling Keys Found to Be Sheared.Cause Undetermined.Pump & Motor Checked for Damage,Keys Replaced & Pump Operability Verified (← links)
- 05000301/LER-1980-012-03, /03L-0:on 801202,slippage Found in Shaft Driven Seal Water Pump Impeller Resulting in Overheating of Throttle Bushing.Caused by Reduced Seal Water Flow Due to Loosening of Pumping Ring.Shaft Sleeve & Bushing Replaced (← links)
- 05000301/LER-1980-011-03, /03L-0:on 801118,axial Flux Difference Deviated from Target Band.Caused by Improper Interpretation of Tech Specs Resulting in Failure to Lower High Neutron Flux Setpoint.Instruction Clarified (← links)
- 05000301/LER-1980-012, Forwards LER 80-012/03L-0 (← links)
- 05000301/LER-1980-010, Forwards LER 80-010/03L-0 (← links)
- 05000301/LER-1980-011, Forwards LER 80-011/03L-0 (← links)
- 05000301/LER-1980-008-01, /01T-0:on 800912,following Trip from Full Power, Main Steam Stop Valve B Failed to Close Upon Receiving Close Signal.Caused by Deposit Buildup on Valve Shaft &/Or Hardening of Gland Packing (← links)
- 05000301/LER-1980-008, Forwards LER 80-008/01T-0 (← links)
- 05000301/LER-1989-003, :on 890712,tank B Level Channel 2LE-934 Began to Indicate Spuriously.Caused by Moisture Intrusion Between Halar Insulator & Sensing Rod.Level Detector Replaced & Channel Reestablished for Accumulator Tank B (← links)
- 05000301/LER-1989-008-01, :on 891103,during Refueling,Contractor Personnel Generated False Trip Signal While Investigating Wiring Discrepancy in Reactor Protection Sys Instrument Racks.Caused by Labeling Error.Supply Changed (← links)
- 05000301/LER-1989-007-01, :on 891027,Train a Safety Injection Signal Generated During Installation of Mod in Containment High Pressure Circuit.Caused by Inadequate Installation Procedure.Procedure Changed (← links)
- 05000301/LER-1980-007-01, /01T-0:on 800619,at Full Power,Test IT-04 Was Performed W/Emergency Diesel Generator 3D Out of Svc. Emergency Safeguards Train Equipment Would Have Been Inoperable on Loss of Ac Power.Caused by Personnel Error (← links)
- 05000301/LER-1980-007, Forwards LER 80-007/01T-0 (← links)
- 05000301/LER-1980-006-01, /01T-0:on 800617,during Safeguards Logic Test W/ One Emergency Diesel Generator Out of Svc,Auto Containment Spray Pump Actuation Threatened During Loss of Ac & high- High Containment Pressure.Caused by Personnel Error (← links)
- 05000301/LER-1980-006, Forwards LER 80-006/01T-0 (← links)
- 05000301/LER-1989-006-01, :on 891015,steam Generator Tubes Found Degraded,W/Undefined Signal & W/Axial Indications in Tubesheet Area.Degradation Caused by Time.Affected Tubes Plugged or Preventively Sleeved (← links)
- 05000301/LER-1989-005-01, :on 891006,intermediate Range High Level Trip Signal Unexpectedly Generated During Course of Routine Source Range Channel Calibr.Caused by Loose Connection of Input/Output Cable.Connection Tightened (← links)
- 05000301/LER-1980-005-03, /03L-0:on 800609,during Training Walkdown of Safeguards Electrical Supply Cabinets,Noted That Tie Breaker Between AO5 & AO6 Safeguards Buses Was Shut.Probably Caused by Improper Electrical Lineup After Loss of Ac Test (← links)
- 05000301/LER-1980-005, Forwards LER 80-005/03L-0 (← links)
- 05000301/LER-1980-004-03, /03L-0:on 800417,during Seismic Analysis of as-built safety-related Sys Per IE Bulletin 79-14, Discovered Overstressed Condition in Component Cooling Sys Piping.Caused by Lack of Support Upstream of Juncture (← links)
- 05000301/LER-1980-004, Forwards LER 80-004/03L-0 (← links)
- 05000301/LER-1980-003-01, /01T-0:on 800408,while Testing Pressurizer Logic Channels,Pressurizer Level Channel 427 Was Momentarily Failed Low by Instrumentation & Control Technicians.Caused by Personnel Error.Event Discussed W/Personnel (← links)
- 05000301/LER-1980-003, Forwards LER 80-003/01T-0 (← links)
- 05000301/LER-1980-002, Updated LER 80-002/01T-1:on 800227,during Normal Operation, Indication of Increasing primary-to-secondary Leak in a Steam Generator Noted.Caused by Leaking Tube in a Steam Generator Position R18C37 (← links)
- 05000301/LER-1980-002-01, /01T-0:on 800227,primary-to-secondary Leak Was Identified in Steam Generator a Resulting in Shutdown of Unit.Caused by Leaking Tube at Position R18C37.Six Defective Tubes Found in Steam Generator a (← links)
- 05000301/LER-1978-012-01, /01T-0 on 781209:primary Loop a Resistance Temp Detector Manifold Isolated to Replace Leaking Orifice Flange Gasket.Took 2 of 4 Overtemp & Overpower Temp Difference Channels Out of Svc.Caused by Personnel Error (← links)
- 05000301/LER-1978-012, Forwards LER 78-012/01T-0 (← links)
- 05000301/LER-1980-001-01, /01T-0:on 800221,during Full Power Operation, Momentary Loss of Red Instrument Bus Occurred,Resulting in Power Range Channel N41 Failing Low.Caused by Faulty Capacitor in 2DY01 Power Supply.Capacitor Replaced (← links)
- 05000301/LER-1980-001, Forwards LER 80-001/01T-0 (← links)
- 05000301/LER-1979-001-01, /01T-0 on 790219:w/unit off-line & at 10% Steam Flow,A&B Main Steam Stop Valves Failed to Close.Caused by Deposits on Valve Shafts or Hardening of Gland Packing. Valves Were Exercised & Packing Adjusted (← links)
- 05000301/LER-1979-001, Forwards LER 79-001/01T-0 (← links)
- 05000301/LER-1979-002-03, /03L-0 on 790227:during Biweekly Test of a Reactor Trip Breaker,Several Seconds Elapsed Following Trip Signal Before Breaker Tripped.Caused by Faulty Reactor Trip Relay,Westinghouse BFD31.Relay Replaced (← links)
- 05000301/LER-1979-002, Forwards LER 79-002/03L-0 (← links)
- 05000301/LER-1979-008-03, /03L-0:on 791210,charging Pump a Taken Out of Svc Due to Observed Leakage in Discharge Manifold Area.Caused by Valve Seat Failure Possibly Resulting from Normal Fatigue.Valve Seat Replaced (← links)
- 05000301/LER-1979-008, Forwards LER 79-008/03L-0 (← links)
- 05000301/LER-1978-011, Cancelled (← links)
- 05000301/LER-1979-006-01, /01T-0 on 790711:during Insp & Repair of Main Feedline,Confirmed That Branch Connection of Auxiliary Feedline Was Not Mfg Per Design Requirements.Branch Connections Replaced by Weldolets (← links)
- 05000301/LER-1979-006, Forwards LER 79-006/01T-0 (← links)
- 05000301/LER-1979-007-01, /01T-0:on 790929,main Steam Line B Isolation Valve Failed to Close During 20% Steam Flow,W/Unit Off Line.Caused Not Stated.Packing Was Loosened & Atwood Morrill Reverse Swing Check Valve Closed (← links)
- 05000301/LER-1979-007, Forwards LER 79-007/01T-0 (← links)
- 05000301/LER-2018-001, Operation or Condition Prohibited by Technical Specifications, Less than Minimum Refueling Cavity Water Level (← links)
- 05000301/LER-2015-005-01, Regarding Main Transformer Lockout and Associated Loss of Buses Results in System Actuation - Revision (← links)
- 05000301/LER-2015-005, Regarding Main Transformer Lockout and Associated Loss of Buses Results in System Actuation (← links)
- 05000301/LER-2012-001, Regarding Unit 2 Manual Reactor Trip (← links)
- 05000301/LER-2011-004, Regarding Automatic Reactor Trip During Startup Physics Testing Due to Source Range Detector Failure (← links)
- 05000301/LER-2011-003, Regarding Condition Prohibited by Technical Specification 3.8.2, AC Sources-Shutdown (← links)
- 05000301/LER-2011-002, Regarding Engineered Safety Feature Steam Line Pressure Dynamics Modules Discovered Outside of Technical Specification Values (← links)
- 05000301/LER-2010-004, Regarding Manual Reactor Trip During Startup (← links)
- 05000301/LER-2010-003, Point Peach, Unit 2, Regarding Technical Specification Required Shutdown (← links)
- 05000301/LER-2010-002, Regarding Manual Reactor Trip Due to Failure of Feedwater Regulating Valve Positioner (← links)
- 05000301/LER-2010-001, Regarding Manual Reactor Trip Following Automatic Turbine Trip Due to Generator Lockout (← links)
- 05000301/LER-2007-007, 0 for Point Beach Nuclear Plant Unit 2, One Overpower Delta T Channel Setpoint Outside Technical Specification Allowed Value (← links)
- 05000301/LER-2005-001, Regarding Main Steam Safety Valve 2MS-02008 Lift Set Point Exceeds Acceptance Criteria (← links)
- 05000301/LER-2004-002, Concerns with Diver Safety Results in Manual Reactor Trip (← links)
- 05000301/LER-2004-001, Regarding Safety Injection System Accumulator Operated with Fluid Level Out of Specification High (← links)
- 05000301/LER-2003-005, Re Manual Reactor Trip and Manual Safety Injection Due to Pressurizer Low Level (← links)
- 05000301/LER-2003-004, Reactor Trip Due to Failure of B Main Feed Pump Motor (← links)
- 05000301/LER-2003-003, Nuclear Management Co, Llc. 04/08/2003 Re Failure to Place Instrument Channel in Trip as Specified by Loc 3.3.1 Required Action D.1 (← links)
- 05000301/LER-2003-001, For Point Beach Nuclear Plant Unit 2 Regarding Containment Accident Fan Backdraft Damper Failure Results in Condition Prohibited by TS 3.6.6.C (← links)
- 05000301/LER-2003-002, For Point Beach, Unit 2, Reactor Shutdown Required Due to Technical Specification Tsac 3.1.6.B.2 Not Met (← links)
- 05000301/LER-2002-002-01, From Point Beach Nuclear Plant Unit 2 Regarding Pressurizer Safety Valve Failed to Lift at Test Pressure (← links)
- 05000301/LER-2002-001, Re Completion of Plant Shutdown Required by LCO 3.5.2 Required Action B.1 (← links)
- ML12236A329 (redirect page) (← links)
- 05000266/LER-2012-005, Potential Operation Prohibited by Technical Specifications (← links)
- 05000266/LER-2012-004, Regarding Unit 1 Manual Reactor Trip (← links)
- 05000266/LER-2012-003, Regarding 2B-04 Safeguards 480V Bus De-Energized (← links)
- 05000266/LER-2012-002, Regarding Condition Prohibited by Technical Specification 3.7.5, Auxiliary Feedwater (← links)