Pages that link to "NRC Form 308A"
Jump to navigation
Jump to search
The following pages link to NRC Form 308A:
Displayed 50 items.
- 05000302/LER-1998-004, :on 980212,unanalyzed cross-connecting of 480 Volt Busses Was Noted.Caused by Inadequate Design Controls. Administrative Controls Will Remain in Place (← links)
- 05000333/LER-1998-003, :on 980429,loss of Redundant ECCS Function (HPCI & ADS) Required for Small Break LOCA Occurred.Caused by Design Condition & Assumed Single Failure.Modified Power Circuit for Cable by Addition of Two in-line Fuses (← links)
- 05000327/LER-1989-007, :on 890319,train a Control Room Isolation Occurred.Caused by Incompatibility of Replacement Smoke Detector Unit Relay Contact Configuration W/Application Requirements.Work Request Initiated (← links)
- 05000266/LER-1998-012, :on 980330,discovered That twenty-seven Containment Penetration Pressure Tests Had Not Been Performed.Caused by Inadequate Program Monitoring & Mgt. Submitted Relief Request & Initiated Root Cause Evaluation (← links)
- 05000382/LER-1998-017, :on 980803,calculated Peak Clad Temp Exceeded 10CFR50.46 Criteria.Caused by Energy Redistributed Factor Error.Incorporated 0.2kw/ft Penalty for Plhgr Into Colss,Per Wa 01162252 (← links)
- 05000366/LER-1987-009-01, :on 870803,reactor Scram Occurred Due to Loss of Vital Ac Power.Caused by Weak Tripping Mechanism in Circuit Breaker CB-4.Jumpers Installed,Equipment Removed from Svc & Instrumentation Verified (← links)
- 05000382/LER-1998-016, :on 980730,failed to Meet TS Requirements for for RT Bypasses.Cause Not Determined Because of Age of condition.1E-4% Bistables for All for Channels of Excore Log Power Channels Were Declared Inoperable 980730 (← links)
- 05000382/LER-1998-015, :on 980724,discovered That T-ring Rubber Seat on CR Normal Outside Air Intake Downstream Isolation Valve Was Incorrectly Installed.Caused by Inadequate Info in Vendor Manual.Reworked Valves to Correct Configuration (← links)
- 05000382/LER-1998-014, :on 980716,manual Reactor Trip W/Subsequent EFAS Actuation Occurred.Caused by Short Circuit in FW Pump Turbine a Speed Control Relay.Plant Mgt Established Significant Event Response Team (← links)
- 05000424/LER-1987-040, :on 870622,containment Ventilation Isolation Occurred.Caused by Personnel Error.Engineering & Maint Personnel Counseled Re Cause of Incident & Provided Guidance to Avoid Repetition (← links)
- 05000245/LER-1987-019-01, :on 870612,misorientation of Fuel Assembly Discovered.Caused by Failure to Load in Proper Orientation. Appropriate Core Verification Procedure Changes Being Implemented (← links)
- 05000382/LER-1997-023, :on 970708,EDG Fuel Sys Surveillance Was Missed Due to Failure of Personnel to Determine Intended Start & End Dates for SR 4.8.1.1.2.h.2 Interval.Submitted Application for Emergency Amend for Removal of SR (← links)
- 05000382/LER-1998-007, :on 980317,discovered That No Allowance for Instrument Loop Uncertainity Included in Surveillance for Chilled Water Outlet Temp.Caused by Failure to Consider Instrument Loop Uncertainty.Revised Task (← links)
- 05000341/LER-1987-020, :on 870528,automatic Start of Div II Emergency Diesel Generators Occurred.Caused by Repairman Working within Wrong Cabinet During Surveillance.Personnel Counseled & Events Details Will Be Reviewed W/Repairmen (← links)
- 05000382/LER-1998-005, :on 980312,missed Thermal Overload TS Surveillance Were Noted.Caused by Inadequate Review of 1992 Rev to TS 3.8.4.2 IAW GL 91-08.Thermal Overloads for 8 MOVs Were Subsequently Tested & Determined to Be Operable (← links)
- 05000306/LER-1997-004-02, :on 970926,determined That Maint Airlock Volumetric Test Exceeded TS 4.4 Required Limit.Caused by Misalignment of Operating Mechanism Shafts W/Shaft Seal Housings.Reduced Shaft Seal Leakages & Revised Procedure (← links)
- 05000498/LER-1999-002-01, :on 990327,inadequate Performance of TS Surveillance When Evaluating Source Range Nuclear Instrument Discriminator Bias Curve Results,Was Discovered.Caused by Lack of Process to Incorporate Info.Compared Bias Curves (← links)
- 05000409/LER-1999-001, :on 990305,excessive back-flow Through Return Line Check Valve Was Noted.Check Valve Were Declared Inoperable.Compensatory Actions for Fesw Sys Pipe Break Were Established.With (← links)
- 05000327/LER-1986-008, :860401,monthly Channel Check for Steam Generator narrow-range Level Shutdown Instrumentation Not Properly Performed on SI-3 Logs.Caused by SI-3 Incorrectly Written for wide-range Level Instruments (← links)
- 05000440/LER-1986-055, :on 860902,reactor Scram Occurred.Caused by Sudden Increase in Sensed Pressure for Steam Bypass Valves Controller.Pressure Regulators & Instrumentation Valve Lineups Recalibr,Procedures Revised & Mgt Directive Issued (← links)
- 05000461/LER-1998-026, :on 860929,inoperable EP Assembly Circuit Cards Which Monitor Power to RPS Scarm & MSIV Sv Were Noted.Caused by Improper Design of EP Assembly Circuit Cards by Supplier. Procured & Installed Correctly Designed Circuit Cards (← links)
- 05000336/LER-1999-009, :on 990525,manual RT Due to Steam Leak in Turbine Bldg Was Noted.Caused by Inadequate Controls.Refined Controls for Adjusting FW Heater String Controls (← links)
- 05000289/LER-1999-004, :on 990510,EFW Pump Was Inoperable Longer than Allowed by TSs Due to Lack of Lubrication.Caused by Loose Set Screw Resulting in Bearing Failure.Pump Was Repaired & Returned to Service on 990512 (← links)
- 05000423/LER-1999-003-01, :on 990505,identified That 18 Month EDG Surveillance Test for LOP with ESF Start Did Not Initiate Test.Caused by Inadequate Understanding of Regulatory Guidance. a & B EDG Returned to Status.With (← links)
- 05000413/LER-1998-017, :on 981015,TS SR on Standby Shutdown Sys Instrumentation Was Missed.Caused by Inadequate Change Mgt Process.Calibrated Affected Resistance Temp Detectors & Modified Procedure.With (← links)
- 05000498/LER-1998-007, :on 980915,failure to Perform Quarterly Surveillance of Td Afp.Caused by Inadequate on-shift Surveillance Test Preparation.Checklist Was Developed for Surveillance Preparation,Performance & Review Requirements (← links)
- 05000289/LER-1998-012, :on 980828,discovered That Control Bldg Ventilation Damper AH-D-270 Had Been Opened Approx 50% for as Long as 54 Days.Caused by Lack of Controls for Subject Damper.Immediately Closed & Tagged Damper AH-D-270 (← links)
- 05000289/LER-1998-008-01, :on 980818,RM RM-A-8G-High Was Noted Inoperable for More than 7 Days.Caused by Weaknesses in I&C Work Practices.Revised Data Collection Portion of Surveillance Procedures (← links)
- 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-1997-002, :on 970130,72 H Administrative Action Statement Entered Due to Declaring Shutdown Cooling HX B Inlet & Outlet Valves SI-125B & SI-412B Inoperable.Valves Declared Operable After Installation of Relief Devices (← links)
- 05000213/LER-1996-025, :on 960927,spent Fuel Building Air Filtration Sys Failed Air Flow Test.Caused by Failure to Recognize Coincident Operation of Pab & Sfb Effect on Air Flow Test. Adjusted Cleanup Sys Damper (← 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)
- 05000370/LER-1985-029-02, :on 851110,turbine-driven Auxiliary Feedwater Pump Automatically Started from Loss of Nonessential Power. Caused by Blown Fuse in auto-start Circuitry.Fuse Replaced & Auxiliary Feedwater Pump Secured (← links)
- 05000382/LER-1997-008, :on 880419,discovered Incorrect Quantity of Tri-Sodium Phospate Used for ECCS Ph Determination.Caused by Personnel Error.Generated Corrective Action Document & Verified post-1988 Similar Surveillances (← links)
- 05000382/LER-1997-005, :on 890715,failure to Perform Coolant Low Flow Trip Operating Bypass Surveillance Occurred.Caused by Failure to Implement Procedural Controls to Test Reactor Coolant Low Flow Bypass.Event Will Be Reviewed (← links)
- 05000289/LER-1997-001-02, :on 970117,potential Overpressurization of Piping Between Closed Reactor Building Containment Isolation Valves Occurred Due to Inadequate Design Code Guidance. Results of Review Will Be Documented.Pages 2 & 3 Corrected (← links)
- 05000354/LER-1995-033, :on 951114,TS Surveillance Requirements 4.8.3.1 & 4.8.3.2 Not Completed Fullfilled Due to Surveillance Test Inadequacies.Surveillance Procedures Revised & Surveillances Successfully Performed (← links)
- 05000382/LER-1997-003, :on 970130,process Analog Computer Card Failed on Essential Services Chilled Water Train B.Caused by Open Fuse on Process Analog Control.New Pac Card Installed & Calibrated (← links)
- 05000354/LER-1996-022, :on 960816,identified Condition That Could Have Prevented Removal of RHR safety-auxiliaries Cooling Sys for Deficiencies.Caused by Procedure Changes Made W/O Adequate Review.Established Administrative Controls (← links)
- 05000445/LER-1996-008, :on 961017,two Pressurizer Safety Valves Were Found with Unsatisfactory Lift Setpoints.Caused by Setpoint Drift.Valves Were Returned to Operable Status Using Normal Rework for Components (← links)
- 05000382/LER-1995-005, :on 951102,calibration Input Data for Some Safety & non-safety Rosemount,Differential Pressure Type Flow & Level Transmitters Were in Error Due to Ineffective Review Process.Tar 95-022 Was Installed (← links)
- 05000285/LER-1991-007, :on 910320,identified twenty-one 480 Volt Molded Case Circuit Breakers Outside Design Basis.Caused by Deficiencies in Original Sys Design.Dbds Compiled as Part of Licensees Reconstitution Program (← links)
- 05000354/LER-1996-027-01, :on 961202,ESF Actuation & Unplanned Automatic Start of Safety Auxiliaries Cooling Sys Pump a Occurred Due to Personnel Error.Nco Involved in Event Counseled (← links)
- 05000461/LER-1996-019, :on 961120,inadequate Surveillance Procedures Were Noted Due to Misinterpretation of TS Bases Results in Source Range Monitor Reactor Period Display Not Verified. Procedures CPS 9031.13 Will Be Revised (← links)
- 05000528/LER-1985-030, :on 850425,both ECCS Trains Declared Inoperable Due to Indeterminate Operability of Containment Recirculation Sump Isolation Check Valves.Caused by Failure to Retest Valves Following Disassembly (← links)
- 05000293/LER-1996-005, :on 960419,automatic Scram Occurred Due to Turbine Vibration During Planned Power Reduction.Turbine Vibration Trip Setting That Initiates Trip of Turbine Due to High Vibration Changed (← links)
- 05000382/LER-1996-009-01, :on 960725,failure of Containment Vacuum Relief Valves CVR-402A & CVR-402B Occurred.Caused by Excessive Roughness in Valve Body Bore.Valves Replaced & Retested (← links)
- 05000285/LER-1992-029, :on 920416,RPT Responding to Heat Stress Situation Received an Unanticipated Intake of Radioactive Matl Due to Deficiencies in Method Used to Change Filters. Maint & RP Procedures Revised (← links)
- 05000348/LER-1996-002-01, :on 960529,TS Surveillance Requirements Not Met & common-cause Failure Identified.Caused by Personnel Error. Revised Surveillance Test Procedures & Modified Underfrequency Reactor Trip Circuits (← links)
- 05000364/LER-1995-001, :on 950405,S/G Tubes Degradation Found.Caused by PWSCC & Outer Diameter Stress Corrosion Cracking (Odscc). S/G Tubes Plugged & Program of Boric Acid Addition Being Continued to Reduce Potential for ODSCC (← links)