Pages that link to "NRC Form SSSA"
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The following pages link to NRC Form SSSA:
Displaying 50 items.
- 05000382/LER-1997-006, :on 970221,discovered Void at Penetration 39 During Ultrasonic Testing of Lpsi.Caused by TS 4.5.2j Not Being Completed post-maint.Invoked TS Requirement Surveillance 4.0.3 to Complete TS 4.5.2j (← links)
- 05000382/LER-1997-012, :on 970404,programmatic Breakdown of Overtime Program Occurred.Caused by Lack of Mgt Oversight in Administering & Implementing Plants Working Hour Policy. Ltr Issued Reemphasizing Working Hour Policy (← links)
- 05000213/LER-1997-001, :on 970114,river Temperature Below UFSAR Analyzed Condition Occurred.Caused by Design Basis Calculations Were Not Updated in a Timely Manner.Ufsar & Design Basis Calculations Will Be Revised (← links)
- 05000354/LER-1996-001, :on 960113,safety & Turbine Acs Heat Exchangers Fouled W/Detritus Occurred Due to Failed Svc Water Strainer. Strainers Replaced & Enhanced Maint & Design Mod (← links)
- 05000382/LER-1996-003-01, :on 960130,logarithmic Power Channels Indicated 5 Percent of Scale Below Actual Power.Caused by Not Periodically cross-correlating Log Power to Linear Power. Recalibrated Log Power Channels (← links)
- 05000354/LER-1995-029, :on 951102,both Trains of Standby Liquid Control Declared Inoperable Due to Failure to Perform Surveillance Per IST Requirements.Audit Team Performed in- Depth Review of Sys (← links)
- 05000354/LER-1995-028, :on 951030,failed to Exert Best Efforts to Restore Liquid Effluent Radiation Monitoring Sys to Operable Status.Caused by Low Mgt Priority Given.Improved Related Processes (← links)
- 05000289/LER-1995-003-01, :on 950909,reactor Coolant Leak Occurred Due to Crack Weld in Cold Leg Drain Line.Failed Line Replaced.W/ (← links)
- 05000410/LER-1989-014, :on 890413,unit Reactor Experienced Reactor Scram Which Was Result of Turbine Trip Due to Actuation of Generator Protection Circuitry.Turbine Trip Caused by Disconnected Wire.Wire Relanded (← links)
- 05000296/LER-1989-003, :on 890307,unplanned ESF Actuations Occurred. Caused by Voltage Transient Due to Start of Control Bay Chiller 3B Because of Design of Circuit Protectors Being Sensitive to Minor Electrical Disturbances (← links)
- 05000296/LER-1989-002, :on 890307,discovered That Compensatory Reactor Coolant Water Sampling Had Not Been Performed.Cause of Event Attributed to Procedural Deficiencies & Personnel Error. Site Directors Std 7.9 Will Be Revised (← links)
- 05000296/LER-1988-007-04, :on 880929,diesel Generator 3C Overheated Due to Inadvertent Isolation of Emergency Equipment Cooling Water.Caused by Valve Misalignment & Error in Flow Diagrams.Surveillance Instruction Revised (← links)
- 05000296/LER-1988-004-03, :on 880909,discovered That air-operated Temp Control Valves for Shutdown Board Room Air Handling Units Will Fail on Loss of Control Air.Caused by Inadequate Interface Review.Flow Diagram Revised (← links)
- 05000296/LER-1988-003-04, :on 880826,diesel Generators 3A,3B & 3D Declared Inoperable Due to Seismic Qualification Concerns W/ Battery Racks.Caused by Inadequate Installation Procedure. Braces & Supporting Hardware Installed.W/Undated Ltr (← links)
- 05000296/LER-1988-001-04, :on 880605,breakers Connecting Diesel Generators 3A,3C & 3D to 4 Kv Shutdown Boards Opened Just After Closing & Would Not Reclose.Caused by Open Signal Sealed in Logic.Also Reportable Per Part 21 (← links)
- 05000387/LER-1991-006-01, :on 910608,unplanned Actuations of ESF Occurred.Caused by Unexpected Trip of Primary Power Supply EPA Breaker Losing Power.Breakers Reset & Full Power Operation Continued Uninterupted (← links)
- 05000388/LER-1990-007, :on 900705,primary Power Supply to RPS a Power Distribution Panel Lost When One Electrical Protection Assembly (EPA) Breaker Tripped.Epa Logic Cards Reviewed & RPS Power Supply Will Be Redesigned (← links)
- 05000400/LER-1987-066, :on 871204,frequency Requirement for Containment Ventilation Isolation Circuitry Actuation Logic Test Not Fulfilled.Caused by Personnel Error.Procedure & Task Sheet for Monthly Tests Generated (← links)
- 05000400/LER-1987-020, :on 870413,reactor Trip Setpoints on All Three Overtemp Delta Temp (Odt) Bistables Incorrectly Set.Caused by Apparent Design Oversight in Odt Circuit Design & Vendor Testing Methodology.Test Procedures Revised (← links)
- 05000400/LER-1992-009-02, :on 920715,manual Reactor Trip/Afw Actuation Occurred Due to Low SG Level.Caused by Inadvertent Deenergization of MFP Recirculation Valve Power Supply. Supply Breaker Replaced (← links)
- IR 05000309/1990022 (← links)
- 05000400/LER-1990-011, :on 900405,Tech Spec Violation Occurred Due to Missed Tests on Valve.Caused by Procedural Deficiencies. Procedures Revised & Plant Personnel Trained (← links)
- 05000400/LER-1989-011-01, :on 890607,inaccurate Reading from Resistance Temp Detector (RTD) Used to Measure Thermocouple Ref Junction Box Temp Reported.Caused by Corrosion of RTD Terminal Contacts.Connection Repaired (← links)
- 05000400/LER-1989-009-01, :on 890501,discovered That Monitoring for Radioactivity in Turbine Bldg Floor Drain Effluent Not Performed from 890429-30.Caused by Isolation of Sample Collection Path for Calibr of Detector (← links)
- 05000400/LER-1988-028, :on 881014,plant Tripped Due to Loss of Feedwater Caused by Low Condenser Hot Well Level.Caused by Low Level in Condenser Hot Well.Failed Relay Coil Replaced (← links)
- 05000400/LER-1988-024, :on 880812,maint Surveillance Tests Verifying Nuclear Instrumentation Source Range Monitor Operability Not Performed Prior to Mode 6 Entry.Caused by Deficient Planning & Scheduling.Surveillance Tests Scheduled (← links)
- 05000400/LER-1987-059, :on 871011,incoming Line Breaker Tripped Initiating Safety Bus Blackout.Caused by Hammering & Drilling of in Relay Cabinet by Employee.Switchyard Breaker Reclosed & off-site Power Restored to Bus (← links)
- 05000400/LER-1988-009-03, :on 880422,discovered That on 880419 Tech Spec 3.0.3 Violated.Caused by Train a Being Placed in Test While Train B Declared Inoperable for Maint & Testing Due to Personnel Error.Procedures Will Be Revised (← links)
- 05000400/LER-1987-055, :on 870917,containment Integrity & Tech Spec 3.6.1.3,Action a Violated.Caused by Personnel Error. Personnel Being Trained on Proper Use of Containment Personnel Access Doors (← links)
- 05000400/LER-1987-054, :on 870915,determined That More Limiting Single Failure Might Exist & on 870916,two Addl Potential Failure Modes Identified & Plant Shut Down.Caused by Design Error. Solid State Protection Sys Modified (← links)
- 05000400/LER-1987-043, :on 870820,discovered That Six Manual Isolation Valves Not Included in Operations Surveillance Test OST-1029.Caused by Personnel Error.Test Revised to Include Valves in Monthly Verification of Position (← links)
- 05000400/LER-1987-037, :on 870621,manual Reactor Trip Initiated from 30% Power After Operating Main Feedwater Train Tripped. Caused by Failed Open Feedwater Pump Recirculation Valve. Circuit Repaired & Plant Returned to Svc (← links)
- 05000400/LER-1987-025, :on 870422,while Operating at 99% Power,Heater Drain Pump a Tripped from Low Flow Signal.Caused by Failure of Discharge Valve on Pump.Separated Air Connection on Pump Discharge Valve Repaired (← links)
- 05000400/LER-1987-015, :on 870325,noble Gas Grab Sample Not Taken. Caused by Personnel Error.Grab Sample Taken on 870326.Event Reviewed W/Staff & Personnel Counseled (← 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-1989-013, :on 890910,boric Acid Transfer (Bat) Pump Not Declared Out of Svc Prior to Refilling Seal Pot.Caused by Noncognitive Error by Util Maint Personnel.Bat Pump 3B Realigned (← links)
- 05000251/LER-1990-001-03, :on 900228,isolation Valve for Intake Cooling Water (Icw) Pump 4C Discharge Line Pressure Indicator Was Not Correct Valve Type.Caused by Personnel Error.Valve Replaced W/Correct Valve Type (← links)
- 05000251/LER-1989-003, :on 890505,reactor Protection Sys Actuation Occurred While Performing Procedure 4-SMI-071.4.Caused by Lifted Leads in Turbine Stop Valves Position Sensing Circuitry.New Procedure Developed (← links)
- 05000250/LER-1987-007-01, :on 870128,diesel Fuel Storage Tank Sample Did Not Meet Tech Spec Surveillance Requirements.Caused by Not Using Sampling Techniques in Accordance W/Std ASTM Sampling Procedures.Procedure Revised (← links)
- 05000250/LER-1987-017, :on 870528,29 & 0603,normal & Emergency Boration Flow Paths Lost.Caused by Damaged in-board Mechanical Seal on Boric Acid Transfer Pumps 4B.Mechanical Seal Inspected & Repaired (← links)
- 05000250/LER-1987-010, :on 870306,reactor Manually Tripped Due to Loss of Turbine Load.Caused by dirt-induced Grooves in Stub Shaft of Control Oil Sys.Turbine Control,Lube & Seal Oil Piping Will Be Replaced (← links)
- 05000250/LER-1988-029, :on 881121,specialist Accidently short- Circuited Power Terminal Lead Which Resulted in Closure of RHR Suction Isolation Valve MOV-3-750.Caused by Personnel Error.Personnel Briefed (← links)
- 05000250/LER-1986-041, :on 860201,RHR Pumps Not in Operation,Per Tech Spec During Refueling Pool Fill During Previous Refueling Outage.Caused by Inadequate Review of Plant Procedures. Administrative Procedure 103.18 Revised (← links)
- 05000250/LER-1988-019, :on 880822,boric Acid Transfer Pump 3A Declared out-of-svc.Caused by Lack of Visible Water Level & Zero Nitrogen Pressure in Seal Pot & Failure of Pump Seal.Seal Replaced & Pump Returned to Svc (← links)
- 05000250/LER-1988-014, :on 880714,RCS Leakage Surveillance Not Performed within Required Interval Due to Personnel Error. Note Placed in Night Book Stressing Need to Meet 18-30 H Tech Specs Requirements (← links)
- 05000251/LER-1986-015, :on 860821,auxiliary Feedwater Sys Train Declared out-of-svc Due to Failed Valves.Caused by Wire Bundle Pressed Against Contact Switch,Keeping Contact Open. Wire Bundle Relocated (← links)
- 05000250/LER-1987-034, :on 871229,manual Reactor Trip from Approx 70% Reactor Power Occurred,Caused by Stuck Contacts on Overspeed Controller 20% Underpower Relay.Contacts Freed & Cleaned. Inputs to Relay Satisfactorily Calibr (← links)
- 05000250/LER-1987-032, :on 871217,control Room Ventilation Sys & Components Isolated Following Trip of Breaker 3P08-19.Caused by Ground in Field Wiring When One Relay Deenergized.Breaker Reset & Monitors Returned to Svc (← links)
- 05000250/LER-1987-025, :on 870914,QA Dept Noted That Surveillance Requirements of Tech Spec 4.1-2 Item 18 Had Not Been Met. Caused by Inadequate Procedure.Procedures 3/4-OSP-201.1 Will Be Revised & Surveillances Performed (← 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)