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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

• 05000254/LER-1986-006, :on 860122,reactor Bldg Ventilation Sys Isolation Occurred as Result of Spurious Trip of Reactor Bldg Ventilation Monitor 1B.Caused When Disconnected Signal Cable Resulted in Spike  + (01:32:13, 25 May 2025)
• ML20141C800  + (01:32:15, 25 May 2025)
• 05000382/LER-1997-017, :on 970515,control Room Emergency Filtration Unit Common Mode Failed.Caused by Inadequate Design.Both Crefu Trains Declared Inoperable & TS 3.7.6.2 Was Entered & Emergency Work Authorization,Initiated  + (01:32:25, 25 May 2025)
• ML20141C753  + (01:32:28, 25 May 2025)
• ML20141C750  + (01:32:30, 25 May 2025)
• ML20141C747  + (01:32:33, 25 May 2025)
• ML20141C743  + (01:32:34, 25 May 2025)
• ML20141C737  + (01:32:37, 25 May 2025)
• ML20141C710  + (01:32:46, 25 May 2025)
• 05000454/LER-1997-013-03, :on 970522,valve Mistakenly Opened & Caused post-LOCA Leakage to Exceed Limit.Cause Unknown.Licensee Identified Affected Sys & Procedures That Vent or Open Affected Sys  + (01:32:47, 25 May 2025)
• 05000255/LER-1986-014, :on 860227,automatic Start of Both Emergency Diesel Generators Occurred.Caused by Personnel Error During Maint on auto-stop Oil Sys.Repair Group & Responsible Engineer Will Be Counseled on Occurrence  + (01:32:52, 25 May 2025)
• 05000261/LER-1986-002-02, :on 860115,during Test Procedure,Turbine Trip/ Reactor Trip Occurred Due to High Level in Steam Generator A.Caused by Either Personnel Error or Equipment Malfunction. Loose Connection on Test Jack Corrected  + (01:32:56, 25 May 2025)
• 05000423/LER-1986-020, :on 860301,RCS Loop 2 Hot Leg Injection Valve 3SIL*V932 Found danger-tagged Shut Instead of Locked Open as Required by Plant Operational Mode.Valve Reopened.Review of All danger-tag Restorations Conducted  + (01:33:02, 25 May 2025)
• ML20141C643  + (01:33:16, 25 May 2025)
• ML20141C633  + (01:33:28, 25 May 2025)
• ML20141C626  + (01:33:31, 25 May 2025)
• ML20141C607  + (01:33:36, 25 May 2025)
• ML20141C584  + (01:33:42, 25 May 2025)
• TAC:M98187  + (01:33:51, 25 May 2025)
• 05000373/LER-1997-022, :on 970529,minimum Shift Manning Was Not Met. Caused by Ineffective Tracking of Active License Maintenance Requirements.Proper Criteria Applied to Proficiency Records from First Quarter 1997  + (01:33:58, 25 May 2025)
• 05000352/LER-1997-003, :on 970204,degraded Back Pressure Dampers Needed for Pipe Rupture Mitigation Resulted in Operation Being Outside Design Basis.Caused by Failure to Include Periodic Cycling & Cleaning of Bdps.Addl Failures,Corrected  + (01:34:00, 25 May 2025)
• ML20141C516  + (01:34:02, 25 May 2025)
• ML20141C513  + (01:34:04, 25 May 2025)
• ML20141C507  + (01:34:06, 25 May 2025)
• ML20141C503  + (01:34:08, 25 May 2025)

• ML20141C500  + (01:34:10, 25 May 2025)

• ML20141C495  + (01:34:12, 25 May 2025)
• 05000341/LER-1997-008, :on 970410,discovered Potential Common Mode Failure Mechanism for 480 Volt MCC Disconnect Switches Due to Not Being Fully Latched Due to Inadequate Maint.Cleaned & Lubricated Fused Disconnect Switches  + (01:34:16, 25 May 2025)
• 05000461/LER-1997-014, :on 880426,MSIV Closure Time Testing Was Not Adequate,Due to Procedural Inadequacy.Revised DPS 9061.09 to Account for Full Valve Travel & Verified MSIV Operability Before Plant Start Up  + (01:34:19, 25 May 2025)
• ML20141C477  + (01:34:20, 25 May 2025)
• 05000336/LER-1997-012-02, :on 970410,inadequate DG Start Surveillance Test Was Identified.Caused Because Personnel Was Unaware That Design of Circuitry for DG Ready to Load Annunciator Did Not Adequately Represent Engine Speed.Revised Sps  + (01:34:29, 25 May 2025)
• 05000336/LER-1993-023-02, Forwards LER 93-023-02,documenting Event Occurred at Unit 2 on 930622.Commitments Made within Ltr Listed  + (01:34:31, 25 May 2025)
• 05000254/LER-1997-020-01, :on 970519,B-train Control Room Ventilation Sys Became Inoperable When AHU Breaker Tripped When Performing Monthly Surveillance.Cause Could Not Be Determined.Circuitry Testing Completed  + (01:34:38, 25 May 2025)
• 05000354/LER-1997-008-01, :on 970520, C Swp Was Removed from Svc While a Pump Was Running in Manual.C Pump Automatically Restarted.Caused by Silt Accumulation Combining W/Hydraulic Perturbation.Sensing Lines Were back-flushed  + (01:34:44, 25 May 2025)
• 05000341/LER-1997-005, :on 970307,RBCCW to EECW Return & Supply Isolation Valve Interlocks,Installed in EECW Makeup Tank Isolation Valve Circuit Between Dedicated Shutdown Panel & Opening Coil.Caused by Inadequate Design.Revised Procedures  + (01:34:48, 25 May 2025)
• 05000282/LER-1997-006-01, :on 970411,discovered Log Error in CR Ventilation Sys.Caused by Apparent Oversight During Original Plant Design.Developed Design Change to Modify Logic  + (01:34:53, 25 May 2025)
• ML20141C390  + (01:34:54, 25 May 2025)
• 05000336/LER-1997-013-02, :on 970411,annunciator for Operating Stack Gaseous RM Was Inoperable Due to Inattention to Detail in Procedure Validation & Verification.Containment RM Calibration Procedure Corrections Was Approved  + (01:34:56, 25 May 2025)
• 05000461/LER-1997-011, :on 860929,failed to Verify Breaker Closed at seven-day Frequency Required by TS Due to Omission of Breaker from Surveillance Procedure.Caused by Inadequate Procedures.Revised Procedures  + (01:34:59, 25 May 2025)
• ML20141C315  + (01:35:20, 25 May 2025)
• ML20141C268  + (01:35:38, 25 May 2025)
• 05000266/LER-1997-026, :on 970521,discovered TS Violation of Operability Requirement of MSL Isolation.Caused by Inadequate Consideration for Operability of All Required Functions.Verified Low RCS Sys Average Temp  + (01:35:39, 25 May 2025)
• 05000313/LER-1996-002, :on 970519,surveillance Tests Required by TS Were Incomplete Because All Combinations of Contacts Not Tested Due to Procedure Deficiencies.Verified Operability of RPS  + (01:35:50, 25 May 2025)
• 05000155/LER-1997-004, :on 970410,determined Potential Loss of DC Power for Primary Containment Spray & Liquid Poison Systems. Caused by Inadequate Design Control Program.Removed & Replaced Breaker 72-12  + (01:36:05, 25 May 2025)
• 05000362/LER-1997-001-02, :on 970412,four Out of Five RCS Nozzles Leaked During Plant Operation & Fifth Suspected of Leaking.Caused by Crack Through Nozzle in Heat Affected Zone of Partial Penetration Weld.Completed Required Welding  + (01:36:07, 25 May 2025)
• 05000338/LER-1997-004-01, :on 970524,found Hi-Hi Alarm Setpoint for 1-RM-RMS-160 Out of Tolerance Due to Personnel Error. Instrumentation & Control Supervisor Coached Dept Personnel on Importance of Self Check  + (01:36:10, 25 May 2025)
• ML20141C164  + (01:36:18, 25 May 2025)
• 05000309/LER-1997-009, :on 970519,identified Scenario That Could Be More Limiting than Design Basis High Energy Line Break in Turbine Bldg.Caused by Insufficient Detail in Documentation. Replaced Identified Components  + (01:36:22, 25 May 2025)
• ML20141C129  + (01:36:28, 25 May 2025)
• ML20141C119  + (01:36:33, 25 May 2025)
• ML20141C073  + (01:36:42, 25 May 2025)