Pages that link to "NRC Form 3EEA"

The following pages link to NRC Form 3EEA:

Displayed 31 items.

• 05000352/LER-1996-004, :on 960206,reactor Scram Signal Occurred While in Hot Shutdown Due to Operator Error During Depressurization.Provided Briefing Sheet to Operations Managers ‎ (← links)
• 05000400/LER-1988-013-02, :on 880603,emergency Bus 1A-SA Deenergized Resulting in Automatic Start of Emergency Diesel Generator 1A-SA.Cause Undetermined.Failure of Battery Room Ventilation Damper Traced to Sticking Limit Switch ‎ (← links)
• 05000400/LER-1988-032, :on 881030,manual Reactor Trip Upon Loss of Main Feedwater Occurred.Caused by Trip of Heater Drain Pumps Attributed to Plywood Cover Left Inside Feedwater Heater 3A Following Maint.Plywood Cover Removed ‎ (← links)
• 05000400/LER-1988-020, :on 880806,wide Range Gas Monitor Inoperable Due to Loss of Sample Flow & Compensatory Actions Not Taken. Caused by Personnel Error.Procedure Revised for Addl Checks on Monitors & Personnel Received Addl Training ‎ (← links)
• 05000400/LER-1987-045, :on 870716,RCS Pressure Fell Below Accumulator Pressure,Initiating Partial Injection of All Three Accumulators.Caused by Reactor Operator Error.Operating Shift Disciplined & Procedure Revised ‎ (← links)
• 05000250/LER-1990-019, :on 901003,alarm Received on Control Room Annunciator X-7/6 Indicating Heat Tracing Trouble.Caused by Inadequate Work Control.Boric Acid Transfer Pumps Aligned & Event Discussed W/Shift Supervisor ‎ (← links)
• 05000250/LER-1989-004, :on 890210,reactor Trip Occurred.Caused by Defective Procedure During Steam Generator Protection Channel Testing.Procedure OP 14004.1 Revised to Correct Errors ‎ (← links)
• 05000250/LER-1989-003-01, :on 890124,control Room Ventilation Sys Shift to Recirculation Mode During Channel Check Occurred.Caused by Flaw in Design of Radiation Monitor Circuit Module.Work Instruction Revised ‎ (← links)
• 05000251/LER-1987-007-01, :on 870310,air Leakage During Leak Rate Testing of Personnel Hatch Exceeded Tech Spec Requirements.Caused by Malfunctioning Equilizing Valve Not Being Able to Fully Close.Valve Replaced ‎ (← links)
• 05000250/LER-1988-030, :on 881202,determined That Safety Injection Accumulator Level Tech Spec Limits Possibly Exceeded During Operation.Caused by Errors in Design Which Installed Transmitters.Transmitters Being Replaced ‎ (← links)
• 05000251/LER-1988-007-01, :on 880812,while Performing Corrective Maint, Subcritical Reactor Trip Occurred.Caused by Failure of Source Range Neutron Detector N-32.Post-trip Review Performed & Detector Replaced ‎ (← links)
• 05000250/LER-1988-004, :on 880318,auxiliary Feedwater Pumps Actuated Due to Drop in Steam Generator Level.Caused by Reactor Control Operator Failure to Monitor Steam Generator Level. Operator Counseled Re Awareness of Actions ‎ (← links)
• 05000251/LER-1988-002-01, :on 880202,containment & Control Room Ventilation Isolation Occurred.Caused by Personnel Error While Performing Mod to Remove Remote Alarm Function.Planner & Technician Involved Counselled ‎ (← links)
• 05000250/LER-1988-001, :on 880113,unit Experienced Turbine Runback Due to Dropped Control Rod Assembly & Manual Subcritical Reactor Trip Occurred When Addl Control Rods Dropped Into Core. Caused by Personnel Error.Personnel Counseled ‎ (← links)
• 05000250/LER-1987-029, :on 871015,determined That Waste Gas Sys Operated in Configuration Not Described in Fsar.Caused by Inadequate Procedural Rev.Procedure 3/4-OP-47.1 Revised to Ensure That Valve 4627 Closed ‎ (← links)
• 05000250/LER-1987-023, :on 870913,safety Injection Sys Actuation & Subsequent Reactor Trip Occurred.Caused by Component Failure & Personnel Error.Event Response Team Formed to Investigate Causes & Initiate Corrective Action ‎ (← links)
• 05000251/LER-1987-020-01, :on 870728,discovered That Steam Generator 4A Feedwater Flow Control Valve Actuator Stem Not Properly Engaged W/Control Valve Stem.Caused by Improperly Matched Coupler Halves.Set Screw Inserted Into Block ‎ (← links)
• 05000251/LER-1987-017-01, :on 870715,inadvertent Isolation of Auxiliary Feedwater Nitrogen Backup Sys Occurred.Caused by Personnel Error (Not Following Procedures).Sys Realigned to Proper Configuration Using Procedure 4-OP-065.2 ‎ (← links)
• 05000250/LER-1987-019, :on 870605,discovered That Neither Unit 3 Nor 4 Had Met Surveillance Requirements of Tech Spec 3.10.8. Caused by Failure to Identify Surveillance Requirements Upon Issuance of License Amends.Procedures Revised ‎ (← links)
• 05000316/LER-1987-013-01, :on 871010,reactor Tripped Due to Turbine Trip. Caused by Bistable Setpoint Being Set Too Conservatively Due to Setpont Calculation Error.Setpoint Recalculated & Bistable Calibr to Correct Value ‎ (← links)
• 05000315/LER-1986-021, :on 860925,RHR Sys May Have Been in Analyzed Configuration Re LOCA Analysis.Caused by Misunderstanding of Tech Spec 3.5.2.Caution Tags Placed on Safety Injection & RHR Sys to Prevent Isolation ‎ (← links)
• 05000528/LER-1991-004, :on 910320,supply Breaker Between non-Class IE 13.8 Kv Switchgear Buses Opened,Resulting in Loss of Power to Train a Class 1E 4.16 Kv Bus.Caused by Personnel Error. Preventive Maint Suspended ‎ (← links)
• 05000528/LER-1989-018, :on 891026,discovered That Containment Purge Valves Did Not Meet Local Leak Rate Testing Acceptance Criteria.Caused by Intergranular Stress Fracture.Spiral Pins Replaced.Reportable Per Part 21 ‎ (← links)
• 05000397/LER-1991-015, :on 910602,high HPCS Sys Pump Suction Switchover from Condensate Storage Tanks to Suppression Pool Occurred.Caused by Personnel Error.Operator Involved Ack & Reset Alarm ‎ (← links)
• 05000397/LER-1989-013, :on 890508,preliminary Calculations Indicated Potential Common Mode Failure of Redundant 120-volt safety- Related Devices.Caused by Less than Adequate Design Criteria to Limit Voltage Drops.Procedure Revised ‎ (← links)
• 05000397/LER-1988-017, :on 880615,problems W/Limitorque Models SMB-000 & SMB-00 Discovered W/Potential Defective Switches.Caused by Design Problem.Investigation & Evaluation of Switch Problems Immediately Initiated.Part 21 Related ‎ (← links)
• 05000397/LER-1987-024, :on 870722,limitorque motor-operated open- Direction Torque Switch Bypass Jumper Discovered Missing. Caused by Personnel Error.All Missing Jumpers Installed & Memo Re Top Tier Drawings Issued to Personnel ‎ (← links)
• 05000335/LER-1988-006-02, :on 880723,steam Generator Tubes W/Greater than 40% Degradation Not Plugged Per Tech Spec Requirement.Caused by Personnel Error.Plugging List Reviewed & Automated & Newly Installed Plugs Will Be Verified ‎ (← links)
• 05000335/LER-1988-003-02, :on 880328,reactor Tripped on Low Steam Generator Level Due to Closure of Main Feedwater Regulating Valve.Steam Flow/Feed Flow Mismatch Controller Replaced & Valve Positioner Cleaned & Adjusted ‎ (← links)
• 05000389/LER-1987-002-03, :on 870305,reactor Trip Occurred Due to Low Steam Generator Level.Caused by Malfunctioning Main Feedwater Regulating Valve Actuator Preventing Proper Feed Flow to Steam Generator.Actuator Replaced ‎ (← links)
• 05000389/LER-1986-011-02, :on 860709,during Full Power,Both Diesel Generators Simultaneously Taken Out of Svc.Caused by Personnel Error & Broken Roll Pin in Governor of Diesel Generator 2A2.Maint Personnel Counseled ‎ (← links)