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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

• 05000272/LER-1976-008-03, /03L:on 760902,setpoints for Containment Radiation Monitors R12A & R12B More Conservative than Required & Setpoint for Monitor R11A Less Conservative.Caused by Personnel Error.Setpoints Recalculated  + (ML20086B808)
• 05000272/LER-1976-007-03, /03L:on 760915,1RH1 Inadvertently Closed.Caused by 1B Vital Instrument Bus Output Voltage Fluctuation Due to Technician Use of Grounded Oscilloscope.Charging Pump 13 Secured & 1RH1 Reopened  + (ML20086B809)
• 05000272/LER-1976-004, Supplemental LER 76-004/03L:on 760902,during Transfer of 1A Vital Instrument Bus to Alternate Power source,1RH2 Closed,Resulting in Loss of RHR Flow to Rcs.Caused by tagged-open Supply Breakers  + (ML20086B810)
• 05000265/LER-1991-013-06, :on 910819,economic Generation Control (EGC) Entered W/O Performing Required Surveillances to Comply W/Ts 4.3.F Due to Personnel Error.All Nuclear Station Operators Will Be Trained on EGC Operation  + (ML20086B815)
• 05000272/LER-1976-004-03, /03L:on 760902,during Transfer of 1A Vital Instrument Bus to Alternate Power Source,Valve 1RH2 Closed, Causing Loss of Cooldown Capability.Caused by Erroneous High Pressure Signal  + (ML20086B819)
• ML20086B821  + (ML20086B821)
• TXX-9515, Responds to NRC Re Violations Noted in Insp Repts 50-445/95-08 & 50-446/95-08 on 950410-13.Corrective Actions: Survey Data of SG Platform Was Analyzed & Compared to Affected Individual Electronic Dosimeter Readings  + (ML20086B823)
• ML20086B827  + (ML20086B827)
• ML20086B828  + (ML20086B828)
• 05000272/LER-1976-003-03, /03L:on 760902,RMS Channel 11A,12A & 12B Channel Checks Not Performed Per Tech Spec Requirements.Caused by Nonspecific Control Console Reading Sheet.Sheet Revised  + (ML20086B830)
• ML20086B836  + (ML20086B836)
• ML20086B838  + (ML20086B838)
• ML20086B842  + (ML20086B842)
• 05000272/LER-1976-002, Supplemental LER 76-002/01T:on 760822,Conde Milking Machine Co Model MX-16A (Containment Air Sample Pump for Air Particulate & Gaseous Radiation Monitors R11A,R12A & R12B) Failed.Caused by Bearing or Shaft Seal Seizure  + (ML20086B843)
• ML20086B847  + (ML20086B847)
• ML20086B850  + (ML20086B850)
• 05000272/LER-1976-002-01, /01T:on 760822,Conde Milking Machine Co Model MX-16A (Containment Air Sample Pump for Air Particulate & Gaseous Radiation Monitors R11A,R12A & R12B) Failed.Caused by Bearing &/Or Shaft Seal Seizure  + (ML20086B854)
• ML20086B855  + (ML20086B855)
• ML20086B856  + (ML20086B856)
• ML20086B861  + (ML20086B861)
• ML20086B865  + (ML20086B865)
• ML20086B867  + (ML20086B867)
• 05000272/LER-1976-001-01, /01T:on 760823,boric Acid Tank Concentration Found Low.Caused by Leaking Charging Pump Discharge Valves.Valve Seats Relapped  + (ML20086B870)
• ML20086B871  + (ML20086B871)
• 05000412/LER-1991-004-01, :on 911018,potential Auxiliary Feedwater Pump Lube Oil Cooler Operation Above Design Pressure Discovered. Caused by Vendor Not Rating Coolers for Higher Pressure. Stud Bolts of Higher Tensile Installed  + (ML20086B874)

• ML20086B879  + (ML20086B879)

• 05000298/LER-1991-012, :on 911015,unplanned ESF Actuations Occurred During Design Change Activities Resulting from Personnel Error,Human Factors & Inadequate Precautions for Work in Sensitive Areas.Written Guidelines Developed  + (ML20086B880)
• ML20086B881  + (ML20086B881)
• 05000325/LER-1991-016, :on 910619,discovered Failure of Both RCIC Steam Line Valves to Seat.Caused by Leakage of Anchor Darling Pressure Seal Gate double-disc Valves.Further Investigation of Cause Assigned  + (ML20086B882)
• ML20086B885  + (ML20086B885)
• ML20086B890  + (ML20086B890)
• ML20086B892  + (ML20086B892)
• ML20086B893  + (ML20086B893)
• ML20086B898  + (ML20086B898)
• ML20086B903  + (ML20086B903)
• ML20086B904  + (ML20086B904)
• ML20086B905  + (ML20086B905)
• ML20086B906  + (ML20086B906)
• ML20086B907  + (ML20086B907)
• ML20086B909  + (ML20086B909)
• 05000271/LER-1977-005-03, /03L:during Drywell High Pressure Scram,Isolation Pressure Switch PS5-12C Actuated at 2.03 Psig,Exceeding Tech Spec Limit of 2 Psig.Caused by static-O-ring Pressure Switch 12N-AA4 Failure.Switch Reset  + (ML20086B911)
• 05000271/LER-1977-004-03, /03L:standby Gas Treatment Outlet Valve SB-3A Would Not Open.Caused by Asco Solenoid Pilot Valve Sticking in Closed Position.Solenoid Disassembled & Pilot Valve Replaced  + (ML20086B913)
• 05000271/LER-1977-003-01, /01T:on 770127,reactor Bldg Pressurized to Extent That One Pressure Relief Panel Separated from Superstructure.Caused by Inoperable Position Indication Actuator Switch on Stream Seal Valve.Switch Sealed  + (ML20086B915)
• 05000271/LER-1977-002-03, /03L:on 770118,during LPCI Surveillance Testing, Autoblowdown Ac Interlock Alarm Not Received.Caused by Loose Lead on Breaker Cell Switch.Lead Tightened & Breaker Cell Switch Leads Checked for Continuity  + (ML20086B918)
• 05000271/LER-1977-001-01, /01T:on 770105,discovered That More Conservative Value for Rod Worth Minimizer Should Be Implemented.Caused by Change from 10% to 20% in Rod Drop Accident Analysis Not Incorporated Into Tech Specs  + (ML20086B920)
• 05000271/LER-1976-048-03, /03L:on 761207,torus Pressure Indication on Recorder PR-16-19-44 Inoperable.Caused by Blown Fuse.Fuse Replaced  + (ML20086B922)
• ML20086B932  + (ML20086B932)
• ML20086B935  + (ML20086B935)
• 05000271/LER-1976-047-03, /03L:on 761130,ECCS Valve Switch 1 Did Not Actuate at 300 Psig Tech Spec Limit.Caused by Switch Assembly Roller Dislodged from Actuating Cam.Pressure Reduced to Atmospheric Level  + (ML20086B938)
• ML20086B939  + (ML20086B939)
• 05000271/LER-1976-046-01, /01T:on 761129,during Loss of Voltage to Motor Control Ctr 89B,uninterruptible Ac Electric Power Sys Tripped.Exide Power Sys Investigating Cause.Failed Gate Driver Boards Replaced  + (ML20086B940)