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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-1989-002-01, :on 890123,positive Reactivity Addition Occurred When Reactor Refueling Water Cavity Level Reduced & Cavity Surfaces Decontaminated.Caused by Misapplication of Positive Reactivity Guidance.Event Reviewed  + (06:01:32, 11 January 2025)
• 05000206/LER-1989-001, :on 890108,reactor Vessel Thermal Shield Support Block Bolts Out of Tolerance.Caused by Support Sys Degradation.Monitoring Program Is Being Developed to Detect Changes in Thermal Vibration  + (06:01:34, 11 January 2025)
• PNO-V-89-008, on 890118,magnitude 5 Earthquake Occurred 8 Miles South of Malibu,Ca.Earthquake Felt at Atomics Intl Facility But Not at Other Facilities  + (06:01:37, 11 January 2025)
• 05000206/LER-1988-019-01, :on 881213,determined That Design Deficiencies Existed in Automatic Controls for Electrical Power Distribution Sys.Caused by Placing Excessive Reliance on Contractors.Training Program Initiated  + (06:01:40, 11 January 2025)
• 05000206/LER-1988-018-01, :on 881212,structural Integrity of Steam Generator Sleeved Tubes Not in Accordance W/Design Requirements.Caused by Limitations of Eddy Current Test Technology Due to Misinterpretation of Data  + (06:01:43, 11 January 2025)
• 05000206/LER-1988-021-01, :on 881212 & 13,containment Fire Protection Spray Inoperable Due to Plugged Nozzles.Caused by Piping Corrosion.Air Will Be Blown to Ensure Corrosion Products or Blockage Completely Removed  + (06:01:46, 11 January 2025)
• 05000206/LER-1988-020-01, :on 881208,failure to Fully Implement Design Requirements of NUREG-0737 in Design of Steam Generator wide-range Level Indication Sys Occurred.Cause Under Inquiry.Corrective Actions Will Be Implemented  + (06:01:48, 11 January 2025)
• ML13331A302  + (06:01:51, 11 January 2025)
• 05000206/LER-1988-017-01, :on 881202,discovered That Calculation Which Provides Basis for Min Tech Spec Vol Did Not Account for Pump G10S Bearing Cooling Water Flow.Caused by Personnel Error.Training Program Initiated  + (06:01:53, 11 January 2025)
• ML13331A297  + (06:01:56, 11 January 2025)
• ML13331A295  + (06:01:58, 11 January 2025)
• TAC:67322  + (06:02:00, 11 January 2025)
• ML13331A293  + (06:02:01, 11 January 2025)
• 05000206/LER-1988-016-01, :on 881130,determined That Wiring Discrepancy, Associated W/South Refueling Water Pump,Could Adversely Affect Containment Spray Function.Caused by Not Removing Wire During Circuit Mods.Wire Removed  + (06:02:04, 11 January 2025)
• 05000206/LER-1988-015-01, :on 881114,performance of Local Leakage Rate Tests (LLRT) on 880720 at Below Required Pressure Discovered.Caused by Cognitive Personnel Error.Assessment of LLRT Procedure Will Be Performed  + (06:02:07, 11 January 2025)
• ML13331A288  + (06:02:10, 11 January 2025)
• 05000206/LER-1988-004-01, :on 880215,bonnet Bleed Off Solenoid Valve SV-3900,for Safety Injection Isolation Valve HV-851B,failed to Open.Caused by Crack in Sleeve in Which Valve Disc Moves on Opening  + (06:02:12, 11 January 2025)
• 05000206/LER-1987-017, :on 871201,remotely Operated,Normally Closed, Containment Isolation Valves in Vent Line Did Not Close Upon Demand Upon Completion of Venting of Loop B Header.Seats of Valves Found Worn & Warped.Valves Replaced  + (06:02:14, 11 January 2025)
• ML13331A285  + (06:02:16, 11 January 2025)
• 05000206/LER-1988-008-01, :on 880524,inadvertent Omission of Safety Injection Vent Valves from Local Leak Rate Testing Program. Caused by Valves Associated W/Penetration E15 Omitted from Local Leak Rate Testing Program  + (06:02:19, 11 January 2025)
• PNO-V-88-062, on 881119,earthquake Occurred 30 Miles West of San Clemente,Ca.Earthquake Felt by Personnel in Unit 1 Control Room & No Seismic Instrumentation Alarms Received. Licensee Found No Damage After Visual Insp of Unit 1  + (06:02:22, 11 January 2025)
• ML13331A282  + (06:02:23, 11 January 2025)
• ML13331A281  + (06:02:24, 11 January 2025)
• 05000206/LER-1988-009, :on 880526,potential Diesel Loads in Excess of Regulatory Commitments.Caused by Calculation Errors & Inadequate Understanding of Loads on Diesel Generator. Personnel Trained in Proper Methodology  + (06:02:27, 11 January 2025)
• 05000206/LER-1988-006, :on 880321,determined That Portions of Backup Nitrogen Sys Design Basis Not Fully Implemented in Design & Installation of Sys.Caused by Procedures Badly Supporting Design Requirements.Procedures Revised  + (06:02:31, 11 January 2025)

• ML13331A277  + (06:02:34, 11 January 2025)

• 05000206/LER-1987-006, :on 870513,insp Per IE Info Notice 86-104 Found wide-range Containment Water Level Instrumentation in non-environ Qualification Configuration.Caused by Personnel Error.Training Program Initiated  + (06:02:36, 11 January 2025)
• ML13331A275  + (06:02:38, 11 January 2025)
• ML13331A274  + (06:02:42, 11 January 2025)
• 05000206/LER-1988-012-01, :on 880808,determined That Loop a Feedwater Signal Erroneously Low.Possibly Caused by Orifice Plate Being Installed Backwards.Procedure Revised Requiring Highest Flow Be Used for Feedwater Flow Inputs  + (06:02:44, 11 January 2025)
• 05000206/LER-1988-013-01, :on 880806,east Main Feedwater Pump Safety Injection Recirculation Valve CV-875A Observed Leaking Feedwater to Refueling Water Storage Tank.Caused by Valve Not Seating Properly in Closed Position  + (06:02:46, 11 January 2025)
• 05000206/LER-1987-011-01, :on 880728,spurious Actuation of Containment Isolation Train a Occurred W/Isolation Valves Verified Properly Closed.Caused by Broken Instrument Electrical Solder Connection.Procedures Modified  + (06:02:49, 11 January 2025)
• 05000206/LER-1988-011-01, :on 880724,containment Isolation Sys Train a Actuation Occurred Due to Loss of Power to Vital Bus (VB) 1. Caused by Improper Installation of Breaker/Bus Connection. VB 1 Supply Breaker Replaced  + (06:02:55, 11 January 2025)
• 05000206/LER-1988-010-01, :on 880625,inadvertent Starting of Diesel Generator 2 Occurred When Inner Compartment Door of Breaker Cubicle Opened.Caused by Personnel Error.Locking Devices to Be Installed on Inner Compartment Doors  + (06:02:58, 11 January 2025)
• ML13331A266  + (06:02:59, 11 January 2025)
• ML13331A265  + (06:03:01, 11 January 2025)
• PNO-V-88-042, on 880626,magnitude 4.7 Earthquake Occurred. Telephone Contact Established That Earthquake Not Felt,No Damage Identified,No Releases of Radioactivity Occurred & Seismic Instrumentation Operable & Did Not Respond  + (06:03:03, 11 January 2025)
• 05000206/LER-1988-009-01, :on 880526,determined That Max Electrical Load Imposed on Diesel Generators in Excess of Tech Spec 4.4 Limit.Cause Under Investigation.Members Involved Have Reviewed Event & Received Training  + (06:03:06, 11 January 2025)
• 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)