Search by property

This page provides a simple browsing interface for finding entities described by a property and a named value. Other available search interfaces include the page property search, and the ask query builder.

List of results

• 05000206/LER-1987-015, :on 871007,determined That ESF Designs Failed to Meet Single Failure Criteria.Cause Re motor-operated Valve MOV-883 Due to Failure to Review Affect of Revised Single Failure Regulatory Guidance  + (06:03:09, 11 January 2025)
• 05000206/LER-1988-007-01, :on 880206 & 07,failed to Retain Sample from Ctr Holdup Tank.Caused by Inadequate Chemistry Cintrols. Amend Requiring Verification of Retained Sample Releases Planned & Average of Jan-Mar Values to Be Used  + (06:03:11, 11 January 2025)
• ML13331A258  + (06:03:13, 11 January 2025)
• ML13331A257  + (06:03:15, 11 January 2025)
• ML13331A256  + (06:03:17, 11 January 2025)
• 05000206/LER-1988-005-01, :on 880329,review of Tech Spec 4.15 Surveillance Procedures Revealed Two Valves Not Adequately Addressed in Surveillance Program.Caused by Oversight. Procedures Will Be Revised  + (06:03:20, 11 January 2025)
• 05000206/LER-1988-006-01, :on 880321,discovered That Backup Nitrogen Sys (Bns) Design Criteria Had Not Been Fully Implemented in Design & Installation of Sys.Caused by Surveillance of Bns Not Being Performed.Changes Instituted  + (06:03:23, 11 January 2025)
• ML13331A253  + (06:03:25, 11 January 2025)
• ML13331A252  + (06:03:26, 11 January 2025)
• ML13331A251  + (06:03:28, 11 January 2025)
• 05000206/LER-1988-002-02, :on 880317,Tech Spec Continuous Fire Watch for Containment Interrupted When Equipment Hatch Closed.Caused by Removing Contiguous Area from Combination Post When Hatch Closed.Instructions to Be More Explicit  + (06:03:30, 11 January 2025)
• ML13331A249  + (06:03:32, 11 January 2025)
• 05000206/LER-1988-001-02, :on 880225,several Components Requiring Environ Qualification Found Omitted from Equipment Qualification Master List.Caused by Inadequate Methodology During List Generation.Installed Equipment Reviewed  + (06:03:35, 11 January 2025)
• ML13331A246  + (06:03:39, 11 January 2025)
• ML13331A245  + (06:03:40, 11 January 2025)
• ML13331A244  + (06:03:42, 11 January 2025)
• ML13331A243  + (06:03:44, 11 January 2025)
• 05000206/LER-1987-018-01, :on 871216,Tech Spec 3.0.3 Voluntarily Entered During Dc Ground Troubleshooting.Caused by Presence of Water Inside Housing of Solenoid.Ground Eliminated by Drying Electrical Connections  + (06:03:46, 11 January 2025)
• 05000206/LER-1986-011, :on 860904,main Feedwater Pump Failed.Caused by Loss of Thrust Disk Assembly Preload.New Assembly Instructions Developed to Avoid Loss of Preload.Vibration Amplitude Will Be Monitored  + (06:03:49, 11 January 2025)
• 05000206/LER-1986-014, :on 861230,ground Alarm Received in Control Room for Dc Bus 2.Opening Feeder Breaker Constitutes Brief Entry Into Tech Spec 3.0.3.Caused by Moisture in Control Circuitry Junction Box.Ground Cleared  + (06:03:52, 11 January 2025)
• 05000206/LER-1987-017-02, :on 870910 & 1201,containment Isolation Valves Loop B Header Would Not Fully Close Upon Demand.Cause Undetermined.Administrative Controls Implemented to Prevent Inadvertent Opening of Valves  + (06:03:55, 11 January 2025)
• 05000206/LER-1987-003-01, :on 870310,turbine & Reactor Trips Occurred as Result of Trip Signal in Response to Generator Field Loss. Caused by Electrical Short Resulting from Brush Being Dropped in Main Exciter Commutator Assembly  + (06:03:59, 11 January 2025)
• 05000206/LER-1987-016-02, :on 871110,Automatic Switch Co Solenoid Valve Failures Occurred.Caused by Thin Hard Film Between Top of Slug & Housing.Root Cause Evaluation Continuing.Further Testing Performed  + (06:04:02, 11 January 2025)
• 05000206/LER-1987-014-02, :on 870626,determined That Battery Weekly Surveillance Not Performed Prior to Mode Change,Contrary to Tech Spec 4.0.4.Caused by Personnel Error.Individual Involved Reinstructed  + (06:04:04, 11 January 2025)
• 05000206/LER-1987-005, :on 870324,nuclear Instrumentation Sys Power Range Channel 1207 Declared Inoperable.Channel Placed in Trip Condition.On 870428 & 29,Channel 1207 Automatically Reset from Trip to Inoperable Condition  + (06:04:07, 11 January 2025)

• ML13331A234  + (06:04:10, 11 January 2025)

• 05000206/LER-1987-015-02, :on 871007,determined That Engineered Safety Sys Design Failed to Meet Single Criteria.Caused by Newly Identified time-dependent Single Failure Susceptibilty. Special Operator Training Provided  + (06:04:12, 11 January 2025)
• ML13331A232  + (06:04:14, 11 January 2025)
• ML13331A231  + (06:04:16, 11 January 2025)
• 05000206/LER-1987-013-01, :on 870902,redundant Pump G-002B Not Tested Prior to Disabling of auto-start Capability of Pump G-002A During Calibr of Hydrazine Storage Tank Level Transmitter. Caused by Personnel Error.Personnel Counseled  + (06:04:19, 11 January 2025)
• ML13331A229  + (06:04:22, 11 January 2025)
• 05000206/LER-1987-012-02, :on 870825,containment Air Luck Hatch Did Not Fully Close Due to Hatch Drive Failure,Resulting in Brief Breach of Containment Integrity.Caused by Broken Master Link.Broken Master Link Replaced  + (06:04:24, 11 January 2025)
• 05000206/LER-1987-007-02, :on 870713,discovered Boric Acid Storage Tank Level Instrumentation Monthly Functional Test Performed Delinquently.Caused by Failure of Planner to Include Test in Tracking Sys.Planner Counseled  + (06:04:29, 11 January 2025)
• 05000206/LER-1986-007, :on 870729,main Feedwater Regulating Valves Closed Resulting in Decrease in Steam Generator Water Levels to 5%.On 870730,steam Flow Signals Failed Low & Unit Shutdown Per Tech Specs.Event Under Review  + (06:04:33, 11 January 2025)
• 05000206/LER-1987-010-01, :on 870620,containment Isolation Sys Actuated Due to Momentary Loss of Power to Three Train 4 Detector Channels.Caused by Loose Connection at Common Power Supply to Transmitters.Nest Receptacle Repaired  + (06:04:38, 11 January 2025)
• 05000206/LER-1987-009-01, :on 870610,during Performance of Procedural Steps in Preparation of Engine Air Roll,Diesel Generator 1 Inadvertently Started.Caused by Operator Failure to Identify Control push-button.Operator Counseled  + (06:04:42, 11 January 2025)
• 05000206/LER-1987-008-01, :on 870602,while in Mode 5,meggering of CRD Mechanism Coil Circuits Revealed Low Insulation Resistance in 22 Circuits.Cause of Damage Occurred During Penetration Installations.Cable Tray Covers to Be Provided  + (06:04:46, 11 January 2025)
• ML13331A221  + (06:04:48, 11 January 2025)
• 05000206/LER-1987-006-01, :on 870513,during Insp of Environ Qualified Butt Spliced Connections Per IE Info Notice 86-104,one Level Switch Found Missing Raychem Heat Shrink Sleeving.Caused by Requirement Being Deleted During Drawing Rev  + (06:04:51, 11 January 2025)
• 05000206/LER-1986-017-01, :on 861113,actuation of Reactor Protection Sys Occurred While in Shutdown Mode.Caused by Personnel Error. Personnel Counseled  + (06:04:55, 11 January 2025)
• 05000206/LER-1986-016-02, :on 860515,diesel Generator 1 Automatically Started During Realignment of Generator from Locked to Standby Position.Cause Not Stated.Circuit Restored. Operability Testing Satisfactorily Completed  + (06:04:58, 11 January 2025)
• 05000206/LER-1986-015-02, :on 860219,diesel Generator 2 Inadvertently Started When Inner Compartment Door of 4-kV Bus Breaker Cubicle Opened.Caused by Personnel Error.Personnel Counseled  + (06:05:03, 11 January 2025)
• ML13331A215  + (06:05:06, 11 January 2025)
• 05000206/LER-1987-005-02, On 870324,Nuclear Instrumentation Sys Power Channel 1207 Declared Inoperable Due to Low Output Resulting in Entry Into Limiting Condition for Operation 3.0.3.Caused by Inadequate Procedure.Procedure Revised  + (06:05:08, 11 January 2025)
• 05000206/LER-1987-004, :on 870313,east Main Feedwater Pump Removed from Svc While Loose Deflector Ring Repositioned & Set Screw Tightened,Constituting Entry Into Tech Spec 3.0.3.Request to Operate One Train for 72 H Submitted  + (06:05:11, 11 January 2025)
• 05000206/LER-1987-003-02, :on 870310,reactor Trip Occurred Due to Loss of Generator Field.Caused by Electrical Short Due to Brush Dropped Into Main Exciter Commutator Assembly.Temporary Improvements to Available Lighting Made  + (06:05:15, 11 January 2025)
• ML13331A181  + (06:05:18, 11 January 2025)
• ML13331A180  + (06:05:19, 11 January 2025)
• ML13331A178  + (06:05:21, 11 January 2025)
• ML13331A177  + (06:05:23, 11 January 2025)
• ML13331A163  + (06:05:26, 11 January 2025)