Pages that link to "ML20203L488"
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The following pages link to ML20203L488:
Displayed 50 items.
- 05000323/LER-1985-001-02, :on 850705,automatic Isolation of Containment Ventilation Sys Occurred W/Unit in Mode 5.Caused by Spurious Spike in Vent Gaseous Radiation Monitor RM14A.Alarm Reset. No Corrective Action Identified (← links)
- 05000275/LER-1985-019, :on 850602,limiting Condition for Operation Time Requirement Exceeded Re Thermocouple Monitoring Sys Channel Check.Caused by Personnel Failure to Review Computer Generated Preventive Maint Tracking Sys (← links)
- 05000275/LER-1985-013, :on 850430,Mode 4 Entered W/Timer Settings Outside Acceptable Tech Spec Limits.Caused by Personnel Error.Personnel Received Addl Training & Procedure Revised (← links)
- 05000275/LER-1985-017, :on 850523,maint Employee Permitted to Enter High Radiation Area W/O Positive Exposure Control W/Unit in Mode 1.Caused by Personnel Error.Technician Counseled & Will Be Disciplined (← links)
- 05000275/LER-1985-015, :on 850520,reactor Trip Followed by Safety Injection Occurred.Caused by Loose Connection to Output Circuit Breaker for Instrument Inverter IY-1-2.Connections Reterminated & Inverter Returned to Svc (← links)
- 05000275/LER-1985-016, :on 850520,automatic Reactor Trip Occurred. Caused by Deenergization of Bistables for Source Range Channel 32 (Jc)(Ri) Due to Voltage Transient.Event Reviewed W/Applicable Personnel & Procedure Revised (← links)
- 05000275/LER-1985-013-01, :on 850430,Mode 4 Entered W/Two ESF Timers Out of Tech Spec Limits.Caused by Personnel Failure to Verify Timer Settings.Personnel Given Addl Training on Importance of Verifying Data (← links)
- 05000275/LER-1985-011, :on 850217,manual Reactor Trip Initiated in Response to Automatic Shutdown of Main Feedwater Pumps 1-1 & 1-2 from Excessive Thrust Bearing Wear Indication.Thrust Bearing Wear Detection Sys Reset (← links)
- 05000275/LER-1984-035, :on 841215,turbine Trip & Feedwater Isolation Occurred.Caused by hi-hi Steam Generator Water Level Signal. Steam Generator 1-2 Feedwater Restored & Turbine Relatched (← links)
- 05000275/LER-1984-033, :on 841206,reactor Tripped When Source Range High Flux Trip Setpoint Exceeded Before Intermediate Range Permissive (P-6) Allowed Blockage.Cause Not Stated. Equipment Responded as Designed (← links)
- 05000275/LER-1984-032, :on 841205,inadvertent Reactor Trip Occurred While Shutting Down Turbine for Maint.Caused by Personnel Error.Turbine Power Permissive P-13 Will Be Reset Using Actual Plant Data (← links)
- 05000275/LER-1984-026, :on 840824,moveable in-core Detector Sys Detectors Found Out of Safe Storage Location.Caused by Weakness in Administration & Hardware Controls.Detectors Returned to Concrete Shielding location.w/841012 Ltr (← links)
- 05000275/LER-1985-004, :on 850104,30-day Special Rept Submittal Period Exceeded.On 841128,public Address Sys Cable Installation Led to Inoperability of Two Fire Barriers.On 850108,unsealed Penetrations Discovered (← links)
- 05000275/LER-1985-003, :on 850105,while in Mode 1,diesel Generator (Ek) 1-1 Started Automatically Due to Undervoltage on 4 Kv Bus H.Event Classified as Anticipated Operational Transient (← links)
- 05000275/LER-1985-006, :on 850125,both RHR Trains Inoperable.Caused by Closure of Loop 4 RHR Suction Valve MOV-8702 Due to Loss of 4-kV Bus Voltage.Suction Valve Opened & RHR Flow Established within 2 Minutes (← links)
- 05000275/LER-1985-001, :on 850102,while in Mode 1,low Flow in RCS Initiated Reactor Trip.Caused by Turbine Overspeed Protection Controller Sys Solenoid Valve Failure.Valve Replaced (← links)
- 05000275/LER-1992-001, :on 920214,0608,19 & 25,plant Operated Outside of Design Basis Re App R Criteria.Caused by Personnel Error Due to Lack of Attention to Detail.Fire Watches Established, Operators Notified & Design Change Initiated (← links)
- 05000275/LER-1984-031, :on 841128,during Mode 1,turbine Tripped Due to hi-hi Steam Generator Level on Steam Generator 1-1.Caused by Personnel Error & Possible Instrument Failure.Controller Replaced (← links)
- 05000275/LER-1984-030, :on 841124,inadvertent Turbine & Reactor Trip Led to Safety Injection.Caused by Operator Failing to Reset Steam Dump Valve Pressure Controller for Normal Operation. Procedures & Shift Turnover Checklist Revised (← links)
- 05000275/LER-1984-028, :on 841029,diesel Generator 1-2 Started Automatically in Response to Loss of Power to 4-kV Bus G. Caused by Failure of Breaker 52-HG-14 to Close During Performance of Surveillance Test (← links)
- 05000275/LER-1984-029, :on 840411,containment Ventilation Isolation Actuated Due to Open Instrument Inverter Output Breaker. Cause Unknown.No Permanent Corrective Actions Taken.Related Correspondence (← links)
- 05000275/LER-1984-027, :on 841026,while in Mode 5,concentration of Oxygen in Gaseous Radwaste Sys Exceeded 4% by Vol for 1 H & 55 Minutes.Caused by Personnel Error.Low Pressure Nitrogen Sys Repressurized W/Nitrogen (← links)
- 05000275/LER-1985-010, :on 850205,audit Determined That 6-month Leak Test on 400-mCi Cs-137 Check Source Not Performed within Time Requirement.Caused by Incorrect Classification of Sealed Source.Applicable Records Corrected (← links)
- 05000275/LER-1984-024, :on 840810,w/reactor in Mode 3,surveillance Requirement to Functionally Test Fire Detection Sys Supervisory Circuitry Not Performed within 6 Months. Administrative Controls Improved (← links)
- 05000275/LER-1984-023, :on 840730,diesel Generators 1-1,1-2 & 1-3 Started Automatically in Response to Loss of Startup Bus Voltage.Caused by Personnel Isolating Plant from 230 Kv Offsite Startup Power.Personnel Counseled (← links)
- 05000275/LER-1984-022, :on 840728,safety Injection & Reactor Trip Occurred Due to lo-lo T Average & High Steam Flow Signals. Caused by Personnel Not Considering Effect of Low RCS Signal on Safety Injection Actuation Logic (← links)
- 05000275/LER-1984-020, :on 840719,diesel Generator 103 Automatically Started Due to Undervoltage on Unit 2 Bus F.Caused by Const Workers Inadvertently Jarring Relay Panel & Actuating Undervoltage Relay (← links)
- 05000275/LER-1984-021, :on 840720,reactor Protection Sys Actuated Due to Coincidence of Steam Generator 1-3 Low Level & Steam Flow/Feed Flow Mismatch.Caused by Failed Valve Operator. Valve Operator Replaced (← links)
- 05000275/LER-1984-019, :on 840714,control Room Ventilation Sys Activated & Transferred to Pressurization Mode.Caused by Error in Drawing 458828 Showing Slave Relay K605 as Closed Contact Instead of Open (← links)
- 05000275/LER-1984-018, :on 840706,portion of ESF (Control Room Ventilation Sys) Actuated in Response to Spurious Radiation Monitor Alarm Signal.Caused by Failed Detector.Detector Replaced.Sys Tested & Returned to Svc (← links)
- 05000275/LER-1984-025, :on 840826,containment Purge Sys Noble Gas Activity Monitors RM-14A & 14-B Inoperable.Caused by Personnel Blocking Containment Isolation Signal from Monitor 14-B While Removing 14-A from Svc for Mod (← links)
- 05000275/LER-1984-015, :on 840508,high Steam Flow Coincident w/low-low Tavg Reactor Trip & Safety Injection Initiated Due to Opened Steam Dump Valves.Caused by Steam Dump Control Sys Malfunction.Pressure Control Module Replaced (← links)
- 05000275/LER-1984-014, :on 840506,while in Mode 2,spurious Reactor Protection Sys Signal Resulted in Reactor Trip.Caused by Faulty Temp Modifier in Protection Set II Control Cabinet. Component Replaced (← links)
- 05000275/LER-1984-007, :on 840309,120-volt Vital Instrument Ac Bus 1-3 Deenergized,Resulting in Automatic Operation of Two Esfs. Caused by Failure of Operator to Recognize That Breaker Closed.Inverter Panels Labeled (← links)
- 05000275/LER-1984-006, :on 840217,four 4.16 Kv Circuit Breakers Failed to Remain Closed.Caused by Excessive Wear in Teflon Coated Fiberglass Sleeve Bearings Used in Mechanical Actuator. Breakers Repaired (← links)
- 05000275/LER-1983-031-03, /03L-0:on 831122,discovered That Tech Spec 4.9.6.2 Re Load Testing of Auxiliary Hoist Performed Approx 240 H Prior to Use of Hoist,Contrary to 100 H Requirement.Caused by Misinterpretation of Tech Spec (← links)
- 05000275/LER-1984-012, :on 840401,instrumentation & Control Technician Performing Maint Misread Procedure & Opened Ac & Dc Power Supply Breakers for Maint Annunciator Panels.Policy Directives & Technician Training Initiated (← links)
- 05000275/LER-1984-013, :on 840407,while in Mode 3,both Subsystems to ECCS Discovered Inoperable Since 840406.Caused by Operator Failing to Identify That Limiting Condition for Operation Exceeded & Operative Procedures Revised (← links)
- 05000275/LER-1984-011, :on 840330,diesel Generator 1-3 Automatically Started When 4 Kv Bus F Potential Transformer Fuse Drawer Pulled Out During Wire Trace.Caused by Personnel Error. Labels Placed on Fuse Drawers (← links)
- 05000275/LER-1984-010, :on 840326,during Surveillance Test,Liquid Radwaste Effluent Line Isolation Valve Failed to Close. Caused by Personnel Error in Procedural Control of Jumper. Jumper Removed & Valve Returned to Svc (← links)
- 05000275/LER-1984-009, :on 840315,while in Mode 5,diesel Generator 1-3 Automatically Started Due to 4 Kv Startup Power Bus Undervoltage.Caused by Failure of Operator to Place Unit 2 Diesel Generator 1-3 Selector Switch in Manual (← links)
- 05000275/LER-1983-033-03, /03L-0:on 831202,source Range Instrumentation Channels Deenergized for 2 Minutes During Surveillance Test. Caused by I&C Technician Failing to Follow Written Procedure.I&C Personnel Instructed (← links)
- 05000275/LER-1983-036-03, /03L-0:on 831211,one Train of Control Room Ventilation Sys Inoperable for 31 Minutes.Caused by Thermal Overload Trip of Fan S-36.Fan Reset.Investigation Revealed Need to Rewind Fan Motor (← links)
- 05000275/LER-1983-035-03, /03L-0:on 831201,fire Suppression Spray & Sprinkler Sys & Cardox Sys Valve Positions Not Verified. Caused by Personnel Overlooking Addl Data Sheets Provided by Procedure Amend.Personnel Instructed (← links)
- 05000275/LER-1983-026-03, /03L-0:on 831114,prior to Fuel Load,Power Switch to Plant Vent Iodine Sampler RE-24 Found in Off Position. Caused by Personnel Error During Heavy Const Period. Protective Cover Will Be Placed Over Switch (← links)
- 05000275/LER-1983-027-03, /03L-0:on 831117,diesel Generator 1-2 Air Receiver 1-2a Fell Below Min Pressure Setpoint.Caused by Starting Air Compressor 1-2A Internal Relief Valve Not Reseating.Relief Valve Replaced (← links)
- 05000275/LER-1983-034-01, /01T-0:on 831206,several Wiring Terminations Discovered Inconsistent W/Circuit Schematics Affecting Control Power Transfer Relays for RHR Pump Control Circuits. Circuit Inconsistency Being Corrected (← links)
- 05000275/LER-1983-030-03, /03L-0:on 831116,discovered That Tech Spec Surveillance Requirement 4.3.3.3.1 for Channel Functional Test of Triaxial Time History Accelographs Not Performed. Caused by Personnel Error (← links)
- 05000275/LER-1983-025-03, /03L-0:on 831021,steam Generator Blowdown Tank Vent Gross Activity Monitor RM-27 Failed Downscale While in svc.RM-27 Failed as Result of Random Failure of U-2 Bistable Multivibrator.Bistable Replaced (← links)
- 05000275/LER-1983-024-03, /03L-0:on 831007,all Main Control Room Annunciators Lost During Const Activity in Annunciator Cabinets.Caused by Const Worker Inadvertently Grounding Hot wire,short-circuiting Panel.Power Restored (← links)