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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
- ML20078B826 + (11:51:35, 26 May 2025)
- 05000315/LER-1983-075-99, Discovered Check Valve RH-142 Exceeded Allowable Leak Rate.During Repairs,Disc Lapped & Seat Inspected.Check Valve Reinstalled W/New Gasket + (11:51:39, 26 May 2025)
- 05000362/LER-1983-063-03, /03L-0:on 830811,during Normal Start of Auxiliary Feedwater Pump Turbine,Steam Inlet Valve HV-4716 Did Not Open Completely.Cause of Valve Trip During Pump Starting Unknown.Valve Reset + (11:51:43, 26 May 2025)
- 05000255/LER-1983-060-01, /01T-0:on 830906,pipe Cap Removed from Containment Side of Penetration 21A,creating Open Path to Outside Containment.Caused by Procedural Inadequacy.Procedures Revised + (11:51:46, 26 May 2025)
- 05000325/LER-1994-015-01, :on 941215,HPCI Injection Valve Did Not Receive an Open Signal & No Injection Into Rv.Caused by Personnel Error.Use of Simpson 260 Meters Which Have Tone Position on Switch Has Been Discontinued + (11:51:50, 26 May 2025)
- 05000498/LER-1994-015, :on 940920,unit 1 Experienced Reactor Trip on low-low Steam Generator Level for Approx Four Minutes After Loss of Steam Generator Feedwater Pump.Caused by Expected Response Instead of Actual Conditions + (11:51:54, 26 May 2025)
- NRC-94-0097, Forwards Proprietary Documents Re Fermi 2 Turbine Generator Repairs,Actions Taken as Result of 931225 Event & Restart from Fourth Refueling Outage.Repts Withheld (Ref 10CFR2.790).W/4 Oversize Drawings + (11:51:56, 26 May 2025)
- 05000317/LER-1980-038-03, Control Room Air Conditioning Compressor 12 Tripped & Would Not Restart.On 800801 Compressor Tripped on Overcurrent.Caused by Amps Higher than Specs.Load Demand Adjusted + (11:53:13, 26 May 2025)
- 05000271/LER-1983-002-01, Leak Found in 2-inch SS Schedule 160 Elbow in Isolable Section of Reactor Drain Line.Caused by Intergranular Stress Corrosion Cracking.Elbow Replaced W/Type 304L Stainless Steel Matl + (11:53:19, 26 May 2025)
- 05000317/LER-1980-051-01, Control Room Air Conditioning Units 11 & 12 Failed During post-maint Testing. Temp Did Not Exceed Design Limit.Cause Not Stated. Unipressure Valves Replaced on hot-gas Bypass + (11:53:22, 26 May 2025)
- 05000317/LER-1980-049-03, Control Room Air Conditioning Unit 12 Tripped & Would Not Restart.Caused by High Discharge Pressure.Unipressure Valves Adjusted.Valves Replaced W/Hot Gas Bypass Valves + (11:53:29, 26 May 2025)
- 05000317/LER-1980-034-01, Control Room Air Conditioning Unit 11 Tripped Off.Unit 12 Immediately Started But Tripped.Caused by High Discharge Pressure.Unipressure Valves Adjusted + (11:53:32, 26 May 2025)
- 05000249/LER-1982-042-01, Excessive Amount of Water Discovered Leaking from Recirculating Seal Cavity 3B.Caused by Failure Due to Excessive Heat of Recirculation Pump 3B Rotating Hardface Seal (EPN24610) + (11:54:18, 26 May 2025)
- 05000317/LER-1980-039-03, Control Room Air Conditioning Compressor 12 Tripped.Unit Tripped Again on 800817.Caused by High Discharge Pressure.Unipressure Valves Adjusted + (11:54:20, 26 May 2025)
- IR 05000289/1977005 + (11:56:20, 26 May 2025)
- ML20077R687 + (11:56:58, 26 May 2025)
- 05000352/LER-1994-013, :on 941208,discovered That Isolation Valves Closed.Caused by Personnel Error Re Inadequate Position Verifications.Insp of Isolation Valves for Remaining Level Switches Performed Immediately + (11:57:00, 26 May 2025)
- ML20077R358 + (11:57:21, 26 May 2025)
- 05000361/LER-1983-067-01, Routine 6-month Surveillance of Fire Detection Supervisory Circuits Conducted Feb 1983 Did Not Demonstrate Operability of Fire Panel 3L-198.Caused by Inoperable Instrument + (11:57:31, 26 May 2025)
- 05000333/LER-1991-011, :on on 910617,walkdown of Panel Anchorage & Adjacent Panels Revealed Number of Anchorage Points Not Plug Welded to Existing Embedded Floor Steel.Caused by Original Const Error.Mod to Anchor Panels Initiated + (11:57:33, 26 May 2025)
- 05000247/LER-1983-015-03, Shutdown Initiated When Containment Spray Pump 21 Operability Criteria Not Met & Diesel Generator 23 Out of Svc for Maint.Pump 21 Removed from Svc Due to High Vibrations + (11:59:27, 26 May 2025)
- TAC:51991 + (12:00:05, 26 May 2025)
- ML20077N727 + (12:00:14, 26 May 2025)
- ML20077N025 + (12:00:56, 26 May 2025)
- 05000387/LER-1983-107-01, /01T-0:on 830818,spray Pond Riser Network a Inlet Manual Isolation Valve Would Travel Only in Closed Direction.Caused by Valve Operator Open Stopnut Moving Out of Position.Mechanical Stop Casing Loosened + (12:01:11, 26 May 2025)
- PMNS20200190, Forthcoming Meeting Between the U.S. Nuclear Regulatory Commission and the PWR Owners Group to Discuss PWROG-18029-NP, Component Reliability Data Issues for Discussion with NRC Research (Note: Meeting Time Is in the Mountain Time Zone) + (12:02:09, 26 May 2025)
- ML20077M187 + (12:02:30, 26 May 2025)
- ML20077L169 + (12:03:43, 26 May 2025)
- TAC:44300 + (12:04:03, 26 May 2025)
- TAC:44467 + (12:04:04, 26 May 2025)
- 05000325/LER-1983-019-03, /03L-0:on 830425,standby Liquid Control Sys Relief Valves 1-C41-F029A & B Lifted at Setpoints Exceeding Tech Specs.Caused by Out of Tolerance Relief Valve Settings. Valves Adjusted + (12:04:08, 26 May 2025)
- TAC:44398 + (12:04:12, 26 May 2025)
- A820021, Responds to NRC Re Violations Noted in IE Insp Rept 50-298/82-26.Corrective Actions:Qa Program Revised to Require Notification of Plant Mgt During Course of Evaluating Commercial Grade Relays for Safety Sys + (12:04:19, 26 May 2025)
- ML20077K091 + (12:05:06, 26 May 2025)
- ML20077J904 + (12:05:38, 26 May 2025)
- 05000348/LER-1991-007, :on 910629,reactor Trip Occurred.Caused by Detection of phase-to-ground Fault by Protective Relaying for Y Winding of 1B Unit Auxiliary Transformer.Transformer Removed from Svc,Isolated & Grounded + (12:05:58, 26 May 2025)
- IR 05000334/2020010 + (12:06:38, 26 May 2025)
- ML20077J242 + (12:07:01, 26 May 2025)
- NLS2020014, Nebraska Public Power District - Report of Changes to Emergency Plan Implementing Procedure Cooper Nuclear Station, Docket No. 50-298, DPR-46 + (12:07:15, 26 May 2025)
- 05000317/LER-1983-033-03, /03L-0:on 830630,routine Chemical Analysis Revealed Boric Acid Concentration in Boric Acid Storage Tanks 11 & 12 Exceeded 8% Limit.Caused by Insufficient Recirculation.Longer Recirculation Started + (12:07:36, 26 May 2025)
- 05000321/LER-1983-036-01, Plant Review Board Determined Lack of Administrative Control in Complying W/Cable & Cable Way Installation.Caused by Lack of Procedure Instructions in Delineating Responsibilities + (12:08:31, 26 May 2025)
- 05000346/LER-1981-070-03, Control Rod Drive Trip Breaker B Failed to Trip Consistently During Anticipatory Reactor Trip Sys Trip Test.Caused by Binding in Undervoltage Coil Device Linkage of Trip Breaker + (12:10:18, 26 May 2025)
- 05000333/LER-1983-021-03, During Mgt Review of Instrument Surveillance Procedure F-ISP-66-1, Scram Discharge Vol High Level Instrument Calibr, Rod Block Calibr Not Performed within 7 Days of Shutdown + (12:10:40, 26 May 2025)
- 05000267/LER-1981-024-03, During Testing,Five of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Accumulation of Dirt on Switches.Switches Replaced + (12:11:38, 26 May 2025)
- 05000267/LER-1980-020-03, During Testing,Two of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Accumulation of Dirt in Switches.Switches Replaced + (12:11:40, 26 May 2025)
- 05000267/LER-1980-007-03, During Testing,Four of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Accumulation of Dirt on Switches.Switches Replaced + (12:11:42, 26 May 2025)
- ML20077G056 + (12:11:50, 26 May 2025)
- ML20077G010 + (12:11:55, 26 May 2025)
- 05000324/LER-1983-060-03, /03L-0:on 830706,HPCI Sys Outboard PCIV E41-F003 Automatically Closed Following Steam Leak Detection Ambient Temp High & HPCI Isolation/Trip Signal a Initiated Annunciations.Caused by Spurious Actuation + (12:12:20, 26 May 2025)
- 05000333/LER-1994-008-01, :on 941103,relay Room Vent Sys Isolation Valve Cable & Design Document Concerns.Caused by Inadequate Documentation & Implementation of Design Bases.Relay Room Ventilation Was Placed in Isolate Mode Operations + (12:12:24, 26 May 2025)
- 05000321/LER-1983-066-03, /03L-0:on 830629,indication Lights for 1E51-F004 & 1E51-F025 Found Not Lit & RCIC Trip & Throttle Valve Would Not Trip.Caused by Steam Leaks & Loose Bolts on Half Coupling.Repairs Made + (12:12:30, 26 May 2025)