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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.
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- 05000302/LER-1977-099, :on 770810,during Mode 1,primary Containment Average Temp Exceeded 130 F,Violating Tech Specs.Caused by Procedural Inadequacy Re Closed Industrial Cooling Water Supply Valve.Procedure SP-344 Revised +
- 05000302/LER-1977-104-01, /01t-1:on 770902,four RCS Flow Instruments Discovered Out of Calibr.Caused by Calibr Drift of Differential Pressure Transmitters.Transmitters Replaced. Instruments Will Be Calibr Every 18 Months +
- 05000302/LER-1977-104, Forwards Rev 1 to LER 77-104 Re Four RCS Flow Instruments Exceeding Calibr Tolerances.Util Revising Commitment to Agree W/Tech Specs to Calibr Transmitters Every 18 Months +
- 05000219/LER-1977-013-01, /01T-0:on 770610,dimensional Measurements Taken on Irradiated Fuel Channels Indicated High Degree of Bowing on Certain Channels.Cause Being Investigated.Ge Evaluating Implications of Channel Bowing +
- 05000219/LER-1977-005-03, /03L-0:on 770323,core Spray Sys 1 Parallel Isolation Valve V-20-15 Became Inoperable in Open Position When Valve Motor Operator Breaker Tripped.Cause Unknown. Surveillance Testing Increased to Determine Actual Cause +
- 05000219/LER-1977-003-01, /01T-0:on 770317,stack Gas Sample Pump B Tripped. Caused by Locking Tabs on Shaft Nut Retaining Washer Not Being Bent to Locking Position During Pump Assembly +
- 05000029/LER-1977-033, Forwards LER 77-033/03L-0 +
- 05000029/LER-1977-035, Forwards LER 77-035/03L-0 +
- 05000029/LER-1977-035-03, /03L-0:on 770627,discovered That Four of Eight Thermocouple Locations on Boron Injection Flow Path Were Less than 150 F.Caused by Leakage from Purification Sys Through Three Valves to SI Tank.Valves Repaired +
- 05000029/LER-1977-033-03, /03L-0:on 770620,discovered That Five of Eight Thermocouple Locations on Boron Injection Flow Path Were Less than 150 F.Caused by Leakage from Purification Sys Through Three Valves to SI Tank.Valves Repaired +
- 05000293/LER-1977-049-13, /13C-0:on 771123,contractor Repairman Received Whole Body Exposure in Excess of 10CFR20.101b Limits.Caused by Inadequate Communications.Inner Door of Restricted Area Was Chained to Prevent Recurrence +
- 05000293/LER-1977-049, Forwards LER 77-049/13C-0 +
- 05000285/LER-1977-009, Advises That Util Modified Testing Frequency for Ac Sequencer Timing Relay,Per Commitment in LER 77-09 +
- 05000263/LER-1977-010, :on 770616,Torque Switch Adjustments on Mo of Outboard RCIC Steam Line Isolation Valve Not Made W/Required Process Due to Improper Instruction.Switch Later Properly Adjusted +
- 05000263/LER-1977-016, :on 770709,determined That a Recombiner Sys Could Be Opened Due to Dirt in Valve Seat Disc.Recombiner Sys & Solenoid Valve Internals Replaced +
- 05000263/LER-1977-012, :on 770620,GE Observed That Pump Trip Delay Time Assumed in Original Cycle 5 Transient Analysis Inappropriate.License Amend Request Will Be Submitted to Increase MCPR Transient Limits +
- 05000263/LER-1977-009, :on 770531,main & Limit Switch Gear Train Grease Had Deteriorated Due to High Ambient Temp.Gear Train Cleaned & Repacked & Lower Temp Presently Maintained Due to Recent Ventilation Mod +
- 05000293/LER-1977-031-01, /01X-1:on 770912,base Metal of CRD Return Line Nozzle Penetrated During Grind Out of Indication.Caused by thermal-induced Fatigue Cracking.Crd Line Removed from Sys +
- 05000293/LER-1977-030-03, /03X-1:on 770806,during Normal Shutdown for Refueling Outage 3,CRD 34-11 Remained full-out When Reactor Scrammed.Probably Caused by Foreign Substance Restricting Normal Operation.Crd Replaced +
- 05000293/LER-1977-018-03, /03X-1:on 770502,CRD 46-39 Withdrawn Beyond full-out Position.Caused by Badly Bent Uncoupling Rod. CRD 46-39 Removed & Replaced on 770901 During Refueling Outage 3 +
- 05000289/LER-1977-016-01, /01T-0:on 770924,RCS Temp & Pressure Rose.Caused by Half Trip Condition from Steam & Feedwater Rupture Control Sys.Possible Cause of Half Trip Attributed to Loose Connection at Terminal Boards +
- 05000306/LER-1977-011, :on 770406,cooling Tower Bus CT12 Lost.Caused by Personnel Error.Personnel Erroneously Reinstalled Relay on Bus Tie Breaker CT-BT112 +
- 05000280/LER-1977-001-03, /03L:on 761113,pressurizer Safety Valve Setpoints for Valves SV-1551A & SV-1551B Found Below 2,485 Psig Requirement.Caused by Setpoint Drift.Testing Procedure Will Be Revised +
- 05000280/LER-1977-010-03, /03L:on 770328,high Steam Flow Relay FC-485-XA Malfunctioned.Caused by Foreign Matl Impregnating Bf Relay. Debris Removed +
- 05000280/LER-1977-006-03, /03L:on 770208,charging Pump Cooling Water Pump 1-CC-P-2A Tripped Due to Thermal Overload.Caused by Faulty Motor Bearings.Bearings Replaced & Minor Mechanical Defects Corrected +
- 05000280/LER-1977-004-03, /03L,on 770126,reactor Exceeded 90% Power Hold Point Prior to Recalibr of ex-core Symmetrical Offset Detector Sys to in-core Instrumentation Sys.Caused by Personnel Error.Power Reduced +
- 05000280/LER-1977-005-03, /03L:on 770126,when Recirculation to Boron Injection Tank Halted to Repair Leaking diaphragms,150 Mwe/H Rampdown Initiated.Caused by Faulty Diaphragm Matl.Valves Will Be Replaced Periodically +
- 05000281/LER-1977-001-03, /03L:on 770118,recirculation Flow from Boric Acid Tank B Ceased.Caused by Broken Coupling Between Motor & Pump on Transfer Pump 1-CH-P-20.Coupling Repaired +
- 05000280/LER-1977-008-03, /03L:on 770220,when Recirculation Halted to Replace Leaking Diaphragm in Valves 1-CH-98,150 Mwe/H Rampdown Initiated.Draphragm Failure Caused by Valve Overtightening When Shutting +
- 05000280/LER-1977-007-03, /03L:on 770215,safety Valve SV-MS-101A Lifted Prematurely at Approx 950 Psi,Below Normal Setpoint of 1,085 Psi.Caused by Torque Limiting Device Setting Low Causing Drift.Safety Valves Reset +
- 05000281/LER-1977-003-03, /03L:on 770209,loop C Cold Protection Channel T-432 Failed.Caused by Malfunction of Span Potentiometer in Low Level Amplifier TM-2-432.Amplifier Replaced W/Shop Spare +
- 05000280/LER-1977-009-03, /03L:on 770219,chemical Addition Tank Discharge Valve MOV-CS-102A Position Indicating Lights Extinguished. Caused by Incorrectly Wired Switch.Maint Procedure Revised +
- 05000281/LER-1977-002-03, /03L:on 770126,ability to Maintain Recirculation Between Boric Acid Tank & Boron Injection Tank Lost.Caused by Obstruction in Line from Tank C to Transfer Pumps. Line Back Flushed +
- 05000280/LER-1977-002-03, /03L:on 770120,valves SV-MS-101B & SV-MS-102B Exceeded Setpoint Limits of 1,085 & 1,095 Psig,Respectively. Caused by Setpoint Drift.Valves Adjusted +
- 05000280/LER-1977-012, RO S1-77-01 Re Failures of Hydraulic Shock Supports (Snubbers).Extent of Failures Reported in LER 77-12.All Snubbers Operable on 771207 Startup +
- 05000277/LER-1977-005-01, /1P:on 770114,high Pressure Svc Water,Emergency Svc Water & Emergency Cooling Water Pumps Did Not Meet FSAR Seismic Requirements.Caused by Change in Calculation Techniques.Higher Strength Bolts & Restraints Added +
- 05000278/LER-1977-002-01, /01T:on 770110,nine Snubbers Found W/Empty Reservoirs.Grinnel Snubber Models AH1372,1373 & 1423 Experienced Seal Degradation,Resulting in Cylinder,Valve Block & Reservoir Leaks.Snubbers to Be Replaced & Tested +
- 05000261/LER-1977-001, :on 770124,during Normal Operations Boric Acid Transfer Pump B Tripped Due to High Pump Motor Temp Cutout. Caused by Equipment Malfunction.Pump Balance Line Cleaned & Restarted +
- 05000261/LER-1977-005, :on 770324,containment Spray Pump a Discovered Not in Svc.Caused by Personnel Error.Personnel Instructed to Review Applicable Tech Specs Re Equipment Required for Critical Plant Operations +
- 05000277/LER-1977-004-01, /01T:on 770106,main Steam Relief Valve 71E Failed Open.Caused by Excessive Pilot Valve Seat Leakage.Valve 71D Replaced.Pilot Valve Section Replaced on Valves 71E & 71K +
- 05000000/LER-1977-005-01, /1P:on 770114,failure of High Pressure Svc Water/Emergency Svc Water & Emergency Cooling Water Pumps to Meet FSAR Seismic Requirements Noted.Caused by Change in Calculational Techniques.Bolts/Restraints to Be Added +
- 05000261/LER-1977-007, :on 770422,isolation Valve for Compressed Air Supply Discovered Closed.Caused by Personnel Error.Valve Opened.Penetration Pressurized +
- 05000277/LER-1977-001-01, /01T:on 770104,reservoirs of Hydraulic Snubber Relief Valves RV-71E & SS-C6 Found Empty.Caused by Reservoir Leak & Loose Locking Nut Allowing Unit to Turn Upside Down. Repairs Made & Reservoirs Filled +
- 05000261/LER-1977-006, :on 770326,during 0% Power,Valve V2-14A Failed to Open While Attempting to Feed Steam Generator a Through Valve W/Steam Driven Auxiliary Feedwater Pump.Caused by Binding Valve Seat Surfaces.Valve Recycled +
- 05000277/LER-1977-007-03, /03L:on 761121,rod Block Monitor Functional Surveillance Test Not Performed for Nov 1976.Caused by Personnel Error.Test Performed on Schedule in Dec +
- 05000278/LER-1977-003-01, /01T:on 770114,insp of Torus Support Columns Found 11 of 32 Columns Showing Visual Indications of Plate Laminations.Caused by Normal Inperfections in Rolled Steel Produced During Rolling Process.No Strengthening Necessary +
- 05000261/LER-1977-002, :on 770125,flow Paths from Boric Acid Storage Tanks Made Inoperable for Maint of Two Chemical & Vol Control Sys Valves.Caused by Personnel Error.Personnel Lectured to Ensure Tech Specs Understood +
- 05000277/LER-1977-006-03, /03L:on 770111,transient in-core Machine Probe Travelled Beyond in-shield Limit Switch During Withdrawal. Caused by Personnel Misoperation & Short Circuit in Backup Circuit.Short Corrected +
- 05000000/LER-1977-005, Updated LER 77-005/1T:on 770114,failure of High Pressure Svc Water/Emergency Svc Water & Emergency Cooling Water Pumps to Meet FSAR Seismic Requirements Noted.Caused by Change in Calculation Techniques +
- 05000261/LER-1977-004, :on 770317,while Constant Axial Offset Control Out of Svc,Axial Flux Differences Not Logged as Required Per Plant Procedures.Caused by Failure to Maintain Log.Operating Procedures & Out of Svc Logs Combined +