Pages that link to "05000446/LER-2003-001, Actuation of Reactor Protection System"
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The following pages link to 05000446/LER-2003-001, Actuation of Reactor Protection System:
Displayed 10 items.
- 05000446/LER-2003-001 (redirect page) (← links)
- 05000446/LER-2010-001 (← links)
- 05000446/LER-2001-001 (← links)
- 05000446/LER-2017-002 (← links)
- 05000446/LER-1993-008, Revised Ltr Correcting Docket Number & Rept Date to LER 93-008-00 Re Auto Start of Both Motor Driven Feedwater Pumps Which Caused ESF Actuation (← links)
- 05000446/LER-1997-005, Forwards LER 97-005-00 Re Inoperability of Containment Personnel Airlock Door During Core Alterations.Commitment Made by Util,Encl (← links)
- 05000446/LER-1997-003, Forwards LER 97-003-00 Re Core Alterations Performed Before Completing All Prerequisites (← links)
- 05000446/LER-1998-002, Forwards LER 98-002-00,re Automatic Reactor Trip Caused Subsequent to Turbine Trip Due to Loss of Turbine Plant Cooling Water. Communication Contains No New Licensing Basis Commitments Re Cpses,Units 1 & 2 (← links)
- 05000446/LER-2024-001-01, Unit Two, Recurring Reactor Scrams Associated with Main Feedwater System Modifications (← links)
- 05000446/LER-2024-001, (Cpnpp), Unit 2, Two Recurring Reactor Scrams Associated with Main Feedwater System Modifications (← links)
- 05000446/LER-2021-001, Reactor Trip Due to Fault on Main Transformer 2MT1 (← links)
- 05000446/LER-1997-004-01, :on 971108,gaps in Structural Components of Containment Sump Trash Racks Was Noted.Caused by Incomplete Corrective Actions Documents.Verified That Condition Does Not Negatively Interact W/Condition Reported in Unit 2 (← links)
- 05000446/LER-1998-002-01, :on 980308,automatic Reactor Trip Caused Subsequent to Turbine Trip Were Noted Due to Loss of Turbine Plant Cooling Water.Caused by Actual Lo Lo Levels in at Least Two Sgs.Level Switches Was Tested (← links)
- 05000446/LER-1997-005-01, :on 971109,containment Personnel Airlock Door Rendered Inoperable During Core Alterations.Caused by Less than Adequate Procedures.Revised Procedures & Reperformed Containment Integrity Surveillance Required by TS (← links)
- 05000446/LER-1997-003-01, :on 971108,core Alterations Were Performed Before Completing All Prerequisites.Caused by Inadequate Compliance of Ts.Core Off Load Was Suspended & All Prerequistes of Core Off Load Was Completed (← links)
- 05000446/LER-1998-001-01, :on 980116,TS Surveillance for Reactor Trip Sys Instrumentation Was Missed Due to Personnel Error.Lessons Learned & Managements Expectation W/Respect to Completing Required Surveillance Have Been Reemphasized (← links)
- 05000446/LER-1997-002-01, :on 971025,operator Manually Tripped Reactor. Caused by Failed Phase Sensing Transformer T2 & Bent Card Edge Connector in Regulation Card.Replaced Phase Sensing Transformer & Restored Cards to Design Spec (← links)
- 05000446/LER-1999-002, :on 990103,main Turbine Generator Control Valves Suddenly & Unexpectedly Closed While at 100 Percent Rated Power.Cause of Event Could Not Be Determined.Ehc Sys Has Been Connected to Minidas.With (← links)
- 05000446/LER-1999-001, :on 981226,identified That TS Surveillance for Containment Integrity Verification Was Not Performed.Caused by Personnel Error.Required Surveillance Was Performed & Applicable Procedures Were Revised.With (← links)
- 05000446/LER-1999-003, :on 990421,discovered That CR HVAC Train a Was Outside TS AOT Limits Due to Blown Fuse.Caused by Incorrect Landing of Wires That Provide Relay Control Power for CR Ventilation Circuitry.Fuse Was Replaced.With (← links)
- 05000446/LER-1999-004, :on 990522,train a EDG Start,Occurred.Caused by Lockout Relay Actuation.Developed Troubleshooting Plan to Help Identify Cause of Problem.With (← links)
- 05000446/LER-1997-001, :on 970415,auxiliary Feedwater Steam Admission Valve Failed to Open Due to Ruptured Diaphragm.Actuator for 2-HV-2452-2 Has Been Disassembled & Individual Components Examined (← links)
- 05000446/LER-1996-007-01, :on 961018,reactor Trip Occurred Due to Loss of Reactor Coolant Pump.Caused by Loss of Electrical Bus 2A3. Meter & Relay Technicians (Utility non-licensed) Tested All Relays & Relays Tested Satisfactorily (← links)
- 05000446/LER-1996-006, :on 960918,automatic Reactor Trip Occurred. Caused by Lightning Strike.Design Change Was Implemented to Eliminate Ground (← links)
- 05000446/LER-1996-005-01, :on 960505,both Main Feedwater Pumps Tripped While Resetting Control Sys.Caused by Personnel Error.Util Will Enhance Applicable Procedures to Provide Guidance & Caution (← links)
- 05000446/LER-1996-004, :on 960328,electrical Maint Personnel Inadvertently Opened Energized Fuse Drawer.Caused by Personnel Error.Util Established Task Team to Investigate Personnel Errors W/Respect to Event (← links)
- 05000446/LER-1996-003-01, :on 960223,manual RT Occurred Due to Turbine Load Swings.Replaced Faulty Cards (← links)
- 05000446/LER-1996-002, :on 960126,noted That TS Surveillance for Turbine Overspeed Missed Due to Oversight in Rescheduling Required Surveillance by Cognizant Personnel.Test Completed on 960126 & Event Reviewed as Lesson Learned (← links)
- 05000446/LER-1995-002-01, :on 950902,invalid TS Surveillance Occurred Due to Reading Incorrect Instrument.Performed Surveillance (← links)
- 05000446/LER-1996-001, :on 960107,allowed Outage Time Was Exceeded in Conjunction W/Enforcement Discretion for RCS Instrument Channel.Caused by Action Statement Requirements Not Being Met (← links)
- 05000446/LER-1995-004-01, :on 951205,ESFA Was Initiated Due to Failed MFW Pump Speed Controller.Reworked & Repaired MFW Pump Controller (← links)
- 05000446/LER-1995-003-01, :on 950914,discovered Incomplete Surveillance to Confirm Turbine Driven AFW Pump Steam Admission Valves Open Stroke for Black Out Signal.Caused by Less than Adequate Procedures.Procedures Revised (← links)
- 05000446/LER-1994-022-01, Forwards LER 94-022-01 Re Labeling Error Leading to Inoperability of Power Range Instrumentation (← links)
- 05000446/LER-1995-001, :on 950203,ASME Section XI Surveillance Was Missed Due to Less than Adequate Work Documents.Revised Applicable Work Documents & Reinforced Expectations W/Cognizant Individuals (← links)
- 05000446/LER-1994-021, :on 941119,noted That Mode 4 TS Surveillance Not Completed as Required Due to Personnel Error.Personnel Involved Counseled & Written Instructions Issued to Operations Personnel (← links)
- 05000446/LER-1994-018, :on 941025,pressurizer Safety Valves Discovered to Be Inoperable from as-found Testing.Caused by Setpoint Drift.Setpoints Reset to within TS Limits (← links)
- 05000446/LER-1994-014, :on 941007,manual Reactor Trip Initiated.Caused by Digital Rod Position Indication Failure for Control Bank D Control Rod H-8.Loose Connector Will Be Corrected During Refueling Outage (← links)
- 05000446/LER-1994-020, :on 941109,ESF Actuation Occurred While Performing Testing on Train B Sequencer.Possibly Caused by Spurious Signal.Revised Test Procedures (← links)
- 05000446/LER-1994-019, :on 941106,containment Ventilation Isolation Occurred Due to Spurious Generator Rotor Ground Signal. Restored Power to Bus,Reset CVI Signal & Reinitiated Containment Purge (← links)
- 05000446/LER-1994-017, :on 941020,determined That One of Two Train B 480 Volt Switchgear Inoperable Due to Inadequate Supports on Current Transformer.Spare Current Transformer Removed from Switchgear (← links)
- 05000446/LER-1994-016, :on 941016,missed Refueling Machine Auxiliary Monorail Hoist Surveillance Due to Personnel Error.Untested Load Indicator Was Replaced W/Appropriate One (← links)
- 05000446/LER-1994-015, :on 941014,CVI Due to No Available Bypass Power When Normal Power Was Deenergized.Restored Power on Bus, Reset CVI Signal & Reinitiate Containment Purge (← links)
- 05000446/LER-1994-013, :on 940817,four of Twenty Valves Tested Had Lift Settings Outside the Plus or Minus 1 Percent Setpoint Tolerance.Cause Not Determined.Setpoint Changes Request Submitted (← links)
- 05000446/LER-1994-012, :on 940815,manual Reactor Trip & Auxiliary Feedwater auto-start Occurred Due to Steam Generator lo-lo Level Signal.Bushing Replaced & Transformer Returned to Svc (← links)
- 05000446/LER-1994-011, :on 940722,discovered TS Surveillance Testing of Solid State Logic Protection Sys Had Not Satisfied Test Basis Requirement.Caused by Personnel Error.Personnel Involved Counselled (← links)
- 05000446/LER-1994-010, :on 940627,Unit 2 Experienced Automatic Reactor Trip from Turbine Generator Trip.Caused by Short in Lead Neutral Current.Cables Extending from Six Primary Transformers to Several Boosters Replaced (← links)
- 05000446/LER-2020-001, Manual Reactor Trip Due to Trip of Both Main Feedwater Pumps (← links)
- 05000446/LER-1994-007, :on 940617,ESF Actuation Occurred Due to hi-hi Steam Generator Level.Caused by Inadequate Procedures. Procedures Revised to Include Required Parameters for Monitoring Prior to Opening MSIVs (← links)
- 05000446/LER-1994-009, :on 940619,two FWIVs Were Declared Inoperable When Low Pressure Nitrogen Alarm Did Not Clear.Caused by Lack of Specificity in Procedures.Nitrogen Pressure Was Restored to Declare FWIV Operable (← links)
- 05000446/LER-1994-004, :on 940422,inadvertent Reactor Trip Occurred Due to Failure of Source Range N32 to Energize When Train B Ssps Input Error Inhibit Switch Placed in Inhibit.Most Likely Caused by Faulty Relay.Relay Replaced (← links)
- 05000446/LER-1994-002, :on 940106,DG 2-01 Tripped on Apparent Field Ground While Carrying Safety Bus Loads Due to Voltage Transient Attributed to Failure of Normal Voltage Regulator Card.Voltage Regulator Card Replaced (← links)
- 05000446/LER-1994-003, :on 940305,plant Operator Noticed Tg Load Swings.Cause Could Not Be Determined.Troubleshooting of EHC Sys Performed & Feedback Coil Replaced (← links)
- 05000446/LER-1994-001, :on 940106,personnel Air Lock Outer Door Equalizing Valve Inadvertently Left in Open Position Due to Procedural Weakness.Outer Door Cycled Full Closed & Appropriate Procedures Will Be Revised (← links)
- 05000446/LER-1993-008-01, :on 931001,main Feedwater Pump Tripped on Low Suction Pressure,Causing Auxiliary Feedwater auto-start. Caused by Drift on Main Feedwater Pump Low Suction Pressure Switches.Switches Recalibr & Design Modified (← links)
- 05000446/LER-1993-007-01, :on 930917,two Separate Flux Doubling Actuations Occurred & Source Range Channel Indicated Intermittently.Caused by Matl Problem W/Source Range Channel Drawer.Board Replaced & Sys Realigned (← links)
- 05000446/LER-1993-011, :on 931117,separator Drain Tank,Normal Drain Valve Failed Open.Caused by Jam Nut on Fisher Positioner Feedback Linkage Arm Being Loose.Nut Tightened & Similar & Identical Feedback Positioner Arms Inspected (← links)
- 05000446/LER-1993-010, :on 931022,surveillance Missed on Safety Injection Accumulators Due to Less than Adequate Procedural Guidance for Accumulator Level Increases.Procedures Revised (← links)
- 05000446/LER-1993-009, :on 930805,inadequate Evaluation of Sys Vibration Led to Failure of Welds in Containment Spray Sys. Welds Repaired & Supports Added to Reduce Level of Vibration (← links)
- 05000446/LER-1993-006-01, :on 930703,auxiliary Feedwater Signal Inadvertently Actuated Due to Personnel Error.Equipment Reset to Normal Lineup & Fuses Removed for Reinstallation Prior to Reactor Startup (← links)
- 05000446/LER-1993-004-01, :on 930514,failure to Satisfy TS Surveillance for Verification of Valve Position Due to Valve Discrepancies Discovered During DBD Review.Valve Cap & Clearance Installed (← links)
- 05000446/LER-1993-003-01, :on 930504,manual Reactor Trip Occurred Following Inadvertent Closure of Fwiv.Caused by Instrumentation Channel Error.Maint Performed on Affected Instrumentation Channels (← links)
- 05000446/LER-1993-002-01, :on 930315,personnel Error Leading to Failure to Satisfy TS SR for Feedwater Isolation Valve Temp Monitoring Identified.Procedures Revised to Clearly Address TS Requirements (← links)
- 05000446/LER-1993-001-01, :on 930207,breaker Tripped at non-IE Instrument Power Distribution Panel to Allow Replacement of Breaker,Resulting in Containment Ventilation Isolation. Caused by Deenergized Relay.Drawing Revised (← links)
- 05000446/LER-2018-001-01, For Comanche Peak Nuclear Power Plant, Unit 2, Automatic Reactor Trip Due to Turbine Trip (← links)
- 05000446/LER-2019-002, Automatic Actuation of Auxiliary Feedwater System (← links)
- 05000446/LER-2018-002-01, Automatic Actuation of Auxiliary Feedwater System (← links)
- 05000446/LER-2018-002, Automatic Actuation of Auxiliary Feedwater System (← links)
- 05000446/LER-2018-001, Automatic Reactor Trip Due to Turbine Trip (← links)
- 05000446/LER-1917-003, Regarding Manual Reactor Trip Due to Trip of Both Main Feedwater Pumps (← links)
- 05000446/LER-1917-001, Regarding Auxiliary Feedwater System Actuation During Unit 2 Turbine Trip (← links)
- 05000446/LER-2015-002, Regarding Reactor Trip Due to Feed Water Flow Controller Malfunction (← links)
- 05000446/LER-2015-001, Regarding Train B Safety Injection System Inoperable for Longer than Allowed by TS (← links)
- 05000446/LER-2014-003-01, (CPNPP) Unit 2 Regarding Two Pressurizer Safety Valves As-Found Lift Settings Found Outside Technical Specification Limits (← links)
- 05000446/LER-2014-003, Regarding Two Pressurizer Safety Valves As-Found Lift Settings Found Outside Technical Specification Limits (← links)
- 05000446/LER-2014-002, Regarding Both Trains of RHR Inoperable During Testing in Mode 3 (← links)
- 05000446/LER-2013-002, Regarding Unit 2 Reactor Trip Due to Relay Actuation (← links)
- 05000446/LER-2013-001, (Cnpnpp) Regarding Unit 2 Hot Shutdown Panel Transfer Switch Inoperable Due to Wiring Error (← links)
- 05000446/LER-2012-002, Regarding Automatic Reactor Trip Due to Low Steam Generator Water Level (← links)
- 05000446/LER-2012-001, Regarding PORV Block Valve Inoperable for Longer than Allowed by Technical Specifications (← links)
- 05000446/LER-2011-004, (Cpnpp), Unit 2 Regarding Human Error Resulting in Inoperability of All Safety Injection Accumulators (← links)
- 05000446/LER-2011-003, Re EDG 2-02 Inoperable Due to Fuel Oil Leak (← links)
- 05000446/LER-2011-002, For Comanche Peak, Unit 2 Regarding Manual Trip Due to High Steam Generator Sodium Concentration (← links)
- 05000446/LER-2011-001, Regarding Inoperability of ECCS Trains Due to Gas Void (← links)
- 05000446/LER-2010-002, For Comanche Peak, Unit 2, Regarding Unit 2 EDG 2-02 Inoperable Due to Remaining in Droop Mode Versus Isochronous Mode (← links)
- 05000446/LER-2009-001, Regarding Gamma-Metrics Calibration Impact on Containment Pressure and RCS Tcold (← links)
- 05000446/LER-2008-002, For Comanche Peak, Unit 2, Regarding P-14 Trip Function for Steam Generator 2-02 Narrow Range Level Channel Inoperable Due to Mispositioned Hand Switch (← links)
- 05000446/LER-2008-001, Re Reactor Trip Due to a Sheared Condenser Vacuum Instrument Sensing Line (← links)
- 05000446/LER-2006-002, Reactor Trip Due to a Secondary Transient Initiated During Load Rejection Testing (← links)
- 05000446/LER-2006-003, Regarding Reactor Trip Due to Feedwater Regulating Valve Malfunction (← links)
- 05000446/LER-2006-001, Regarding Condition Prohibited by Technical Specifications (← links)
- 05000446/LER-2005-003, Regarding Two Pressurizer Safety Valves Found with Unsatisfactory Lift Setpoints (← links)
- 05000446/LER-2005-002, Regarding Auxiliary Feedwater System Actuation Due to Momentary Loss of the 138kV Switchyard (← links)
- 05000446/LER-2005-001, Re Condition Prohibited by Technical Specification (← links)
- 05000446/LER-2004-003, Regarding Containment Pressure Channel Inoperable Due to a Secondary Ground (← links)
- 05000446/LER-2004-002, For Comanche Peak, Unit 2 Re Actuation of Specified System: Emergency Diesel Generator and Turbine Driven Auxiliary Feedwater Pump (← links)
- 05000446/LER-2004-001, Regarding Refueling Water Storage Tank Level Channel Inoperable (← links)
- 05000446/LER-2003-005, Regarding Actuation of Reactor Protection System (← links)
- 05000446/LER-2003-003, Regarding Spray Additive System Inoperable Due to Mispositioned Valves (← links)
- 05000446/LER-2003-004, Regarding Containment Pressure Channel Inoperable Due to Random Electronic Failure (← links)
- 05000446/LER-2003-002, Re Actuation of Auxiliary Feedwater System (← links)
- 05000446/LER-2003-001, Actuation of Reactor Protection System (← links)
- 05000446/LER-2002-002, Condition Prohibited by Technical Specifications (← links)
- 05000446/LER-2002-001, Reactor Trip Due to Primary Water Pump Vibration High Signal on June 6, 2002 (← links)
- 05000446/LER-2024-002, Turbine Driven Auxiliary Feedwater Pump Unavailable Following Transition from Mode 4 to Mode 3 (← links)
- 05000446/LER-2021-001-01, Reactor Trip Due to Fault on Main Transformer 2MT1 (← links)
- 05000446/LER-2024-002-01, Turbine Driven Auxiliary Feedwater Pump Unavailable Following Transition from Mode 4 to Mode 3 (← links)
- 05000446/LER-2025-002, (Cpnpp), Safety Chiller Inoperable Due to Failure of Copper Refrigerant Fittings (← links)
- 05000446/LER-2025-001, (Cpnpp), Containment Spray Pump Declared Inoperable Due to Misaligned Breaker (← links)
- ML032580453 (redirect page) (← links)
- 05000446/LER-2003-005, Regarding Actuation of Reactor Protection System (← links)
- 05000446/LER-2003-003, Regarding Spray Additive System Inoperable Due to Mispositioned Valves (← links)
- 05000446/LER-2003-004, Regarding Containment Pressure Channel Inoperable Due to Random Electronic Failure (← links)
- 05000445/LER-2003-004, Regarding Condition Prohibited by Technical Specifications (← links)
- 05000446/LER-2003-002, Re Actuation of Auxiliary Feedwater System (← links)
- 05000445/LER-2003-003, For Comanche Peak Unit 1 Reactor Trip on Units 1 & 2 Due to Grid Disturbance (← links)
- 05000445/LER-2003-002, Regarding Actuation of Reactor Protection System (← links)
- 05000445/LER-2003-001, From Comanche Peak, Unit 1 Regarding Condition Prohibited by TS (← links)