Pages that link to "05000315/LER-2020-001, Containment Closure Requirements Not Met During Refueling Operations"
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The following pages link to 05000315/LER-2020-001, Containment Closure Requirements Not Met During Refueling Operations:
Displayed 7 items.
- 05000316/LER-2020-004-01, Regarding Unit 2 Automatic Reactor Trip on Low-Low 24 Steam Generator Water Level (← links)
- ML20353A109 (redirect page) (← links)
- 05000315/LER-2020-001 (redirect page) (← links)
- 05000315/LER-2007-002 (← links)
- 05000315/LER-2004-001 (← links)
- 05000315/LER-2002-004 (← links)
- 05000315/LER-2002-003 (← links)
- 05000315/LER-2001-004 (← links)
- 05000315/LER-2001-003 (← links)
- 05000315/LER-2001-002 (← links)
- 05000315/LER-2001-001 (← links)
- 05000315/LER-1982-053, Forwards LER 82-053/03L-0 (← links)
- 05000315/LER-1982-047, Forwards LER 82-047/03L-0 (← links)
- 05000315/LER-1982-043, Forwards LER 82-043/03L-0 (← links)
- 05000315/LER-1982-040, Forwards LER 82-040/03L-0 (← links)
- 05000315/LER-1982-039, Forwards LER 82-039/01T-0 (← links)
- 05000315/LER-1982-038, Forwards LER 82-038/03L-0 (← links)
- 05000315/LER-1982-037, Forwards LER 82-037/03L-0 (← links)
- 05000315/LER-1982-017, Forwards LER 82-017/03L-0 (← links)
- 05000315/LER-1982-016, Forwards LER 82-016/03L-0 (← links)
- 05000315/LER-1982-030, Forwards LER 82-030/04L-0 (← links)
- 05000315/LER-1982-027, Forwards LER 82-027/01T-0 (← links)
- 05000315/LER-1982-079, Forwards LER 82-079/01T-0 (← links)
- 05000315/LER-1982-076, Forwards LER 82-076/03L-0 (← links)
- 05000315/LER-1982-074, Forwards LER 82-074/03L-0 (← links)
- 05000315/LER-1982-071, Forwards LER 82-071/03L-0 (← links)
- 05000315/LER-1983-005, Forwards LER 83-005/03L-0 (← links)
- 05000315/LER-1982-063, Forwards LER 82-063/03L-0 (← links)
- 05000315/LER-1982-060, Forwards LER 82-060/03L-0 (← links)
- 05000315/LER-1982-046, Forwards LER 82-046/03L-0 (← links)
- 05000315/LER-1982-057, Forwards LER 82-057/03L-0 (← links)
- 05000315/LER-1982-056, Forwards LER 82-056/03L-0 (← links)
- 05000315/LER-1982-055, Forwards LER 82-055/03L-0 (← links)
- 05000315/LER-1982-054, Forwards LER 82-054/03L-0 (← links)
- 05000315/LER-1982-050, Forwards LER 82-050/03L-0 (← links)
- 05000315/LER-1983-002, Forwards LER 83-002/03L-0 (← links)
- 05000315/LER-1983-011, Forwards LER 83-011/03L-0 (← links)
- 05000315/LER-1983-001, Forwards LER 83-001/03L-0 (Previously Submitted as Unit 2 LER 83-022/03L-0) (← links)
- 05000315/LER-1983-009, Forwards LER 83-009/01T-0 (← links)
- 05000315/LER-1982-109, Forwards LER 82-109/03L-0 & 82-110/03L-0.LERs Previously Submitted Using 1983 Numbers 83-002/03L-0 & 83-001/03L-0, Respectively (← links)
- 05000315/LER-1983-004, Forwards LER 83-004/03L-0 (← links)
- 05000315/LER-1983-003, Forwards LER 83-003/03L-0 (← links)
- 05000315/LER-1982-108, Forwards LER 82-108/03L-0 (← links)
- 05000315/LER-1982-099, Forwards LER 82-099/03L-0 (← links)
- 05000315/LER-1983-025, Forwards LER 83-025/01T-0 (← links)
- 05000315/LER-1982-080, Forwards LER 82-080/01T-0 (← links)
- 05000315/LER-1982-084, Forwards LER 82-084/04L-0 (← links)
- 05000315/LER-1982-100, Forwards LER 82-100/03L-0 (← links)
- 05000315/LER-1982-096, Forwards LER 82-096/01T-0 (← links)
- 05000315/LER-1982-093, Forwards LER 82-093/03L-0 (← links)
- 05000315/LER-1982-094, Forwards LER 82-094/03L-0 (← links)
- 05000315/LER-1983-090, Forwards Updated LER 83-090/03X-1 & LER 83-120/03L-0 (← links)
- 05000315/LER-1983-077, Forwards Updated LER 83-077/03X-1 & LERs 83-096/03L-0 & 83-097/03L-0 (← links)
- 05000315/LER-1983-075, Forwards Updated LER 83-075/99X-1 & LER 83-090/03L-0 (← links)
- 05000315/LER-1983-033, Forwards LER 83-033/03L-0 (← links)
- 05000315/LER-1983-024, Forwards LER 83-024/03L-0 (← links)
- 05000315/LER-1983-031, Forwards LER 83-031/03L-0 (← links)
- 05000315/LER-1983-023, Forwards LER 83-023/03L-0 (← links)
- 05000315/LER-1982-075, Forwards LER 82-075/03L-0 (← links)
- 05000315/LER-1983-015, Forwards LER 83-015/03L-0 (← links)
- 05000315/LER-1982-111, Forwards LER 82-111/03L-0 (← links)
- 05000315/LER-1982-058, Forwards Updated LER 82-058/03X-1 (← links)
- 05000315/LER-1978-056, Forwards LER 78-056/03L-0 (← links)
- IR 05000315/2020001 (← links)
- 05000315/LER-1982-003, Corrected LER 82-003/04T-1:on 820115,unplanned Gas Release Detected by Elevated Vent Stack Monitor Reading.Exact Cause Undetermined.Helium Leak Testing of Waste Gas Sys Probable Cause.Test Procedure Changed (← links)
- 05000315/LER-1982-101, Forwards Updated LER 82-101/01X-1 (← links)
- 05000315/LER-1983-026, Forwards LER 83-026/03L-0 (← links)
- 05000315/LER-1983-027, Forwards LER 83-027/03L-0 (← links)
- 05000315/LER-1982-086, Forwards Updated LER 82-086/03X-1 & LERs 82-089/03L-0 & 82-090/03L-0 (← links)
- 05000315/LER-1982-024, Forwards Updated LER 82-024/03X-1 (← links)
- 05000315/LER-1950-315, Retracts LER 50-315/85-70,per Generic Ltr 86-10 & Engineering Evaluation.Ler Number Will Not Be Reissued. Records Should Be Updated Accordingly (← links)
- IR 05000315/2021001 (← links)
- 05000315/LER-1982-048, Forwards LER 82-048/03L-0 & LER 82-049/03L-0 (← links)
- 05000315/LER-1976-045, Forwards Updated LER 76-045/03X-1 & LER 82-036/03L-0 (← links)
- 05000315/LER-1999-027, LER 315/99-027-00, Underrated Fuses Used in 250 Vdc System Could Result in Lack of Protective Coordination (← links)
- 05000315/LER-2023-002, Failure of Unit 1 West Auxiliary Feedwater Pump to Restart During Load Sequencer Testing (← links)
- 05000315/LER-2023-001, Two Trains of Fuel Handling Area Exhaust Ventilation Inoperable (← links)
- 05000315/LER-2022-003-01, Automatic Trip on Losss of Flow Due to Reactor Coolant Pump Trip (← links)
- 05000315/LER-2022-003, Automatic Reactor Trip on Loss of Flow Due to Reactor Coolant Pump Trip (← links)
- 05000315/LER-2022-002, Ice Condenser Door Inoperable Resulting in a Condition Prohibited by Technical Specifications (← links)
- 05000315/LER-2022-001, Manual Reactor Trio Following Manual Turbine Trio Due to High Vibrations on Main Turbine (← links)
- 05000315/LER-2021-001, Main Steam Safety Valve Setpoints Found Outside Technical Specifications Limits (← links)
- 05000315/LER-2020-001, Containment Closure Requirements Not Met During Refueling Operations (← links)
- 05000315/LER-1986-022-01, :on 861002,rod Insertion Limit Monitor Declared Inoperable After Determination That Limits Outside Tech Spec Requirements.Caused by Personnel Error.Rod Insertion Limit Calibr Procedure Revised & Performed (← links)
- 05000315/LER-1984-016, :on 840808,control Switch Positions for Motor Driven Auxiliary Feedwater Pumps Not in Neutral.Caused by Administrative Oversight.Tech Spec Table 3.3-3 Revised (← links)
- 05000315/LER-1986-024-01, :on 861111,w/reactor at 90% Power,Esf Ventilation Fans Discovered Inoperable for Approx 18 Minutes.Caused by Damper Misalignment & Failure to Rept Error.Position Indicators Evaluated (← links)
- 05000315/LER-1986-020-02, :on 851102,860623,831016 & 840702,main Steam Safety Valve Lift Setpoints Found Out of Spec.Caused by Lack of Procedural Instructions.Procedure Will Be Modified on 860825 (← links)
- 05000315/LER-1986-018-01, :on 860802,reactor Trip Occurred from Steam Generator Flow Mismatch Coinciding W/Low Steam Generator Level.Caused by Increased Turbine Load.Personnel Counseled (← links)
- 05000315/LER-1986-015-01, :on 860801,reactor Tripped from Steam Generator hi-hi Level.Caused by Inability of Personnel to Manually Control Main Feedwater Pump & Feedwater Valves.Operators Counseled (← links)
- 05000315/LER-1985-029-02, Re Inoperable Fire Doors withdrawn.CO2 Concentrations Would Have Been Obtained in Case of Fire in Each CO2 Protected Area (← links)
- 05000315/LER-1986-002, :on 860217,discovered That Three Reactor Trip Sys Interlock Setpoints Not Set Per Tech Spec Requirements. Caused by Misinterpretation of Tech Specs.Procedures Revised to Agree W/Tech Specs (← links)
- 05000315/LER-1986-009-01, :on 860507,O-ring Seal Discovered Missing from Particulate Filter Holder.Caused by Procedural Deficiency. Routine Weekly Sample Procedure Changed to Incorporate Check for O-ring Seal to Filter (← links)
- 05000315/LER-1987-001, :on 870112,determined That Calibr of Radioactive Liquid Effluent Monitors Did Not Literally Comply W/Tech Spec Surveillance Requirement 4.3.3.9.2.Caused by Misinterpretation of Measurement Range (← links)
- 05000315/LER-1985-010, :on 850112 & 0406,dose Equivalent I-131 Limit Exceeded.Fuel Sipping Performed During 10-yr Inservice Insp/Refueling Outage on 208 Fuel Assemblies (← links)
- 05000315/LER-1986-002-01, :on 860217,two Reactor Trip Sys Interlock Setpoints Found Out of Compliance W/Tech Spec Definitions. Caused by Misinterpretation of Tech Spec Requirements.Tech Spec Rev Under Consideration (← links)
- 05000315/LER-1985-051, :on 851004,Fire Door 345 Found Open W/O Fire Watch Stationed While in an Inoperable Condition for 4 H. Caused by Personnel Error.Clearance Will Remain W/Door Shut. One H Fire Watch Per Tech Specs Established (← links)
- 05000315/LER-1986-023-01, :on 861122,turbine Trip/Reactor Trip Occurred. Caused by Adjustment of Thrust Bearing Wear Detector Drifting to Point Where Turbine Shaft Displacement Would Generate Trip Signal.Detector Adjusted (← links)
- 05000315/LER-1986-013-01, :on 860513 & 0606,procedural Deficiencies Re Actuation of Auxiliary Feedwater Sys Components on Loss of 4-kV Bus Voltage Noted.Procedures Literally Inconsistent W/ Tech Specs.Procedures Revised (← links)
- 05000315/LER-1986-012-01, :on 860528,during Mode 1,turbine Trip/Reactor Trip Occurred Due to Apparent Overspeed of Main Turbine. Cause Unknown.Trip Deemed Spurious Event.Frequency to Voltage Converter & Comparator Replaced (← links)
- 05000315/LER-1986-010-01, :on 860515,upper Containment Area Particulate Radiation Monitor Spiked to High Alarm Status.Caused by Software Error of Eberline DAM-1 & 3.Alarm Automatically Reset.Upgraded Software to Be Installed (← links)
- 05000315/LER-1982-010-04, /04T-1:on 820311 & 12,unplanned Gas Release of Approx 94.7 Ci Occurred W/O Sampling & Analysis Per Tech Specs.Caused by Lifting of Safety Valve 2-SV-38 at 63 Psi Below Correct Level of 140 Psi.Valve Replaced (← links)
- 05000315/LER-1999-008, :on 990115,plant Operators Reported Excessive Piping Vibration in RHR Rooms.Cause Unknown.Update to LER Will Be Submitted (← links)
- 05000315/LER-1983-026-03, /03L-0:on 830324,during QA Audit on PMI-2270,hole Found in Fire Barrier Penetration Seal F-6107.Cause Unknown. Seal Repaired (← links)
- 05000315/LER-1983-027-03, /03L-0:on 830111,AB Diesel Engine Removed from Svc to Repair Minor Fuel Oil Leak on Front Bank Injector Pump 5.Gasket Replaced on Pressure Screw.Engine Returned to Svc on 830112 (← links)
- 05000315/LER-1986-019-01, :on 860731,discovered That During Calibr of Waste Gas Hydrogen Analyzer,Improper Gas Mixture Used to Check Accuracy of Analyzer Following 860703 Calibr.Caused by Personnel Error.Calibr of Analyzer Performed (← links)
- 05000315/LER-1986-017-01, :on 860722,turbine Tripped on Stator Cooling Water Low Pressure Trip Signal,Resulting in Turbine Trip/ Reactor Trip.Caused by Personnel Error.Personnel Counseled (← links)
- 05000315/LER-1986-004, :on 860228,reversing Starters Improperly Arranged in Motor Control Ctr & Fault in Control Transformer Could Result in Loss of Ctr.Design Change Implemented & Problem Will Be Resolved During Outage (← links)
- 05000315/LER-1986-007-01, :on 860326,discrepancy Noted Between Reactor Protection & Engineered Safeguards Sys Time Response Test Procedure & Tech Spec 3.3-5 Re Turbine trip-reactor Trip Response Time.Rev Proposed (← links)
- 05000315/LER-1986-006-01, :on 860326,discrepancy Noted Between Reactor Protection & Engineered Safeguards Sys Time Response Test Procedure & Tech Spec Requirements.Reactor Coolant Pump Undervoltage Relay Response Time Omitted.Procedure Revised (← links)
- 05000315/LER-1986-016-01, :on 860710,power-range Nuclear Instrumentation Time Response Testing Not Performed by Acceptable Test Method.Caused by Procedure Deficiency.Procedure Changes Implemented (← links)
- 05000315/LER-1986-014-01, :on 860628,surveillance Testing Not Performed to Meet Requirements of Tech Spec 4.5.2.d.1 to Verify Interlock Action of RHR from Rcs.Caused by Personnel Error. Procedures Written to Ensure Compliance (← links)
- 05000315/LER-1986-011-01, :on 860528,lower Containment Airborne Particulate Monitors Train a & B High Alarmed.Caused by Leaking Valves Mfg by Velan,Copes-Vulcan,Inc & Conval,Inc. Valves Repaired (← links)
- 05000315/LER-1986-008-01, :on 860424,reactor Trip Function of Manual Safety Injection Circuitry Found Not Specifically Tested During Review to Ensure Compliance W/Tech Spec Surveillance & Bases Requirements (← links)
- 05000315/LER-1986-005-01, :on 860411,reevaluation of Enerfab Test Rept Re Failure of Glass Test Specimen for Containment Airlock Exposed to Beta Radiation Occurred.Unable to Determine If Results Applicable to Glass Used at Plant (← links)
- 05000315/LER-1986-004-01, :on 860228,evaluation of Noncompliance Rept Concluded Potential Loss of safety-related Electrical Equipment Due to Improper Application of Motor Control Ctr Reversing Starter Transformers.Reportable Per Part 21 (← links)
- 05000315/LER-1986-003-01, :on 860228,evaluation of Noncompliance Rept (NCR) RQA-86-03-1 Concluded Certain Fire Protection Piping W/O Seismic Restraints Previously Installed Over safety-related Components.Also Reportable Per Part 21 (← links)
- 05000315/LER-1978-058-03, /03L-0 on 781003:rounding Off of T(Z) Resulted in Fz Calculations Being non-conservative in Top of the Core. Caused Apdms to Perform Stairstep Comparison to Fz Limit in the Top 1/2 of Core Height (← links)
- 05000315/LER-1998-037, :on 980812,ice Condenser Bypass Leakage Exceeds Design Basis Limit of 5 Square Feet Occurred.Caused by Lack of Understanding of Design Basis of Containment as Sys. Procedure Will Be Developed to Guide Insp.With (← links)
- 05000315/LER-1985-057, :on 851025,reactor Trip Signal Generated When Power Range Instruments Taken from Svc to Allow Installation of Design Change.Caused by Technician & Supervisor Error. Personnel Counseled (← links)
- 05000315/LER-1985-058-01, Forwards Revised Interim LER 85-058-01 & Requests That Expected Submittal Date for Final LER Be Extended from 860131 to 0501.Task Group Analysis & Results Not Completed by Jan 1986 as Anticipated (← links)
- 05000315/LER-1978-057-03, /03L-0 on 781002:result of Study Declared Pump Inoperable.Caused by Inconsistency of Pumps Ability to Achieve Its Rated Speed,Which Was Traced to Pump Speed Governor.Governor Replaced (← links)
- 05000315/LER-1978-049-03, /03l-0 on 780912:when the Operator Cycle Tested the Valve Upon Returning It to Svc.He Failed to Realize That an Isolation Time Test Was Required.Times Were Posted as Corrective Action,For All Valves.(Encl to 7809190209) (← links)
- 05000315/LER-1978-049, Forwards LER 78-049/03l-0 on 780912 (← links)
- 05000315/LER-1978-048-03, /03L on 780810:After a Control Rod Movement of 5 Steps,The Apdms Failed to Perform Scans to Determine F(Z). Procedureal Change Has Been Issued & Opers Instructed in Its Use. (Encl to 7809190196) (← links)
- 05000315/LER-1978-048, Forwards LER 78-048/03L on 780810 (← links)
- 05000315/LER-1978-050-03, /03L-0 on 780602:boron Injection Throttle Valve Positions Were Out of Adjustment & Were Repositioned,Leaving the Valves W/Unknown Flow Capacity Until 780818.Caused by an Engr Error.(Encl to 7809280065) (← links)
- 05000315/LER-1978-050, Forwards LER 78-050.03L-0 (← links)
- 05000315/LER-1985-043, :Corrective Actions & Preventive Measures Taken Re Discrepancies in Process Sensor Calibr Completed,Per Confirmatory Action Ltr Issued on 850820 (← links)
- 05000315/LER-1985-068, :on 851213,unexpected Stream Line Isolation Occurred.Caused by Natural Sequence During Performance of Approved Surveillance Test Procedure & Technician Failure to Warn Operators of Event (← links)
- 05000315/LER-1986-001, :on 860120,high Alarms Resulted in ESF Actuation Signal Possibly Causing Isolation of Containment Purge Sys If Purge Sys in Svc.Caused by Leak in Porv.Alarm Setpoint Readjusted (← links)
- 05000315/LER-1985-026, :on 850601,safety Injection Signal Occurred. Caused by Loss of Block Signal to One Channel & Another Channel in Test for Surveillance Testing.Design Change Implemented & Precaution Added (← links)
- 05000315/LER-1984-031-01, :on 841209,axial Flux Difference Monitor Alarm Restored to Operable Status W/O Monitoring Indicator Once Per Hour.Requalification Training Program Revised (← links)
- 05000315/LER-1985-071, :on 851219,fire Watch Tours Suspended.Caused by Accidental Sys Actuation & Suspected CO2 Discharge During Routine Testing of Fire Protection Sys (← links)
- 05000315/LER-1985-063, :on 851117,main Steam Flow Transmitters MFC-110 & MFC-111 Declared Inoperable During Startup.Caused by Defective Square Root Extractor in MFC-110 & Lack of Calibr in MFC-111.Transmitters Repaired & Recalibr (← links)
- 05000315/LER-1985-045, :on 850905,attachments Found Being Made to Steel Form Plates.Addl Anchors Added.Plates & Attachments Were Capable of Resisting Intended Design Basis Loads.Ler Withdrawn (← links)
- 05000315/LER-1985-050, :on 851002,power Range Neutron Rate Trip Setpoints Discovered Set at Nonconservative Values,Per Tech Spec Table 2.2-1.Caused by Incorrect Interpretation of Westinghouse Documents.Procedures Corrected (← links)
- 05000315/LER-1985-062, :on 851117,lower Containment Airborne Monitor Particulate Channel Train B Alarmed High,Producing ESF Actuation Signal.Caused by Monitor Trending Upward.High Alarm & Alert Alarm Setpoints Readjusted (← links)
- 05000315/LER-1985-049, :on 850926,channel Function Testing of Manual Steam Line Isolation Circuits Not Performed Per Tech Spec 4.3.2.1.1.Master Surveillance Schedule Revised (← links)
- 05000315/LER-1985-061, :851116,fire Watch Missed Insp of Fire Hatches, Causing Hourly Tour to Be Late.Caused by Lack of Communication Between Contract Fire Watch & Security Personnel.Personnel Counseled Re Insps (← links)
- 05000315/LER-1985-060, :on 851111,ESF Actuation Occurred Which Resulted in Safety Injection & Steam Line Isolation.Caused by Testing Performed on Steam Flow Instruments & Auxiliary Feedwater Sys.Procedure Revised (← links)
- 05000315/LER-1997-006, :on 970327,interim LER Equipment in Containment Rendered Inoperable Due to Cracked Floodup Tubes.Damaged Unit 1 EQ Futs,Replaced (← links)
- 05000315/LER-1985-054, :on 851026,w/unit in Mode 3,ESF Actuation Signal Received from Steam Generator 11 hi-hi Level.Caused by Inadvertent Overfill of Generator.Level Returned to Normal.Operator Counseled (← links)
- 05000315/LER-1985-006, :on 850206,auxiliary Bldg Access Control Ventilation Duct Fire Damper Found Closed.Damper Designed as safety-related But Misidentified as nonsafety-related.Damper Reset (← links)
- 05000315/LER-1985-059, :on 851104,automatic ESF Actuation Occurred, Resulting in Reactor Trip Signal Due to Erroneous High Source Range Neutron Flux Indication.Caused by Personnel Error.Technician Counseled (← links)
- 05000315/LER-1985-034, :on 850726,inner & Outer 612-ft Elevation Airlock Doors Opened Simultaneously.Caused by Door Malfunction.Doors Immediately Closed,Restoring Containment Integrity.Door Latching Mechanism Restored to Status (← links)
- 05000315/LER-1985-033, :on 850725,during Insp of Containment,Senior Reactor Operator Noticed Condensation Backed Up Due to Open Floor Drain Valve.Caused by Employee Error.Valve Immediately Closed (← links)
- 05000315/LER-1985-056, :on 850530,defective Fire Seal Discovered in Control Room Cable Vault Ceiling.Cause Undetermined. Continuous Fire Watch Coverage Established & Seal Repaired & Declared Operable (← links)
- 05000315/LER-1985-055, :on 851025,lower Containment Airborne Monitor Particulate Channel Train a High Alarmed,Resulting in ESF Actuation Signal.High Alarm & Alert Alarm Setpoint Readjusted (← links)
- 05000315/LER-1984-036, :on 840717,personnel Access Hatch Remained Open for 1 H & 20 Minutes.Caused by Personnel Negligence. Personnel Made Aware of Tech Spec 3.6.5.5 & Hatch Labeled W/Info Re Tech Spec Requirements (← links)
- 05000315/LER-1985-070, :on 851210 & 11,while in Mode 5,fire Penetrations & Seals Found Nonfunctional.Fire Watches Posted & Seals Repaired.Final Rept Will Be Submitted When Safety Evaluations Complete (← links)
- 05000315/LER-1985-067, :on 851204,during Cold Shutdown,Seven Ice Condenser Lower Inlet Doors Failed Initial Opening Torque Surveillance Test & Declared Inoperable.Caused by Frost Buildup.Doors Will Be Evaluated Before Startup (← links)
- 05000315/LER-1985-066, :on 851212,ESF Actuation Signal Occurred After Alarm Received on Lower Containment Particulate Monitor Train B.Apparently Caused by Reactor Coolant Pump 12 Flange Leak (← links)
- 05000315/LER-1985-053, :on 851011,determined That in Event of Actuation of CO2 Suppression Sys Protecting Fire Zones 41 or 45,fire Dampers Not Designed to Close Allowing Gas to Flow Out of Zone.Openings Closed Permanently (← links)
- 05000315/LER-1985-052, :on 851012,failure of Critical Control Room Power Inverter Resulted in Momentary Loss of 120-volt Regulated Control Room Power.Caused by Shorted Diode & Capacitor & Blown Fuses.Components Replaced (← links)
- 05000315/LER-1985-065, :on 851125,during Surveillance Procedure for Nuclear power-range Instrument N-41,reactor Tripped from 78% Power,Resulting in Spike in Instrumentation.Operating Procedures Revised (← links)
- 05000315/LER-1985-041, :on 850813,Loop 1 Feedwater Isolation Valve Failed to Close Upon Receipt of Safety Injection Signal. Caused by Inadequate Terminated Lead at Terminal Block. Procedural Requirements Should Prevent Events (← links)
- 05000315/LER-1985-031, :on 850709,RHR Sys Local Flow Measurements Did Not Coincide W/Process Instrumentation Installed in Safety Injection Path.Similar Discrepancy Discovered on 850715 Re RHR Cooldown Flow Indication (← links)
- 05000315/LER-1985-040, :on 850807,RHR Low Flow Alarm Bypassed When Alternate Flow Path Used.Caused by Failure to Monitor Flow Indicators After Low Flow Alarm Installation.Controls Implemented Requiring Operators to Monitor Alternate Path (← links)
- 05000315/LER-1985-039, :on 850808,buried Firewater Ring Header Sectionalizing Valve Excavated.Caused by Failure to Perform Tech Spec Surveillance Requirements Re Valve Position.Curb Box Installed.Valve Surveillance Procedures Updated (← links)
- 05000315/LER-1985-038, :on 850806 & 23,during Surveillance Testing, ESF Ventilation Sys Charcoal Absorber Banks Inoperable. Caused by Carbon Settling in Banks.Investigation of Event & Generic Implications Underway (← links)
- 05000315/LER-1985-036, :on 850809,fire Watch Failed to Conduct Hourly Insp of Inoperable Fire Dampers in Auxiliary Bldg,Per Tech Spec 3.7.10.Caused by Personnel Error.Personnel Counseled (← links)
- 05000315/LER-1985-035, :on 850729,RCS Boron Concentration Determined Below Tech Spec Requirement of 2000 Ppm.Cause Unidentified. RCS Immediately Borated to 2128 Ppm.Chemical Sampling Frequency Increased & Operations Order Issued (← links)
- 05000315/LER-1985-037, :on 850803 & 07,automatic ESF Actuations Occurred.Caused by Installation of Approved Design Change. No Corrective Actions Planned (← links)
- 05000315/LER-1985-028, :on 850613,fire Barrier Seals Located Above Walls Separating Control Room Cable Vault & Hot Shutdown Panel Cable Room Not Installed in Accordance W/Design Specs. Cause Not Stated.Permanent Seal Installed (← links)
- 05000315/LER-1985-032, :on 850710,inaccurate Procedures Re Auxiliary Bldg Continuous Release Alarm Setpoint (Tech Spec 4.3.3.10.1) Noted.Procedures Changed to Prohibit Setting Gaseous Alarm Setpoint to Uncalculated Value (← links)
- 05000315/LER-1985-030, :on 850705,10 Inoperable Radioactive Gaseous Process & Effluent Monitoring Instrumentation Channels Discovered During Procedural Review.Caused by Failure to Test.Tech Specs Implemented Immediately (← links)
- 05000315/LER-1985-047, :on 850916,listed Equipment Not Calibr at Tech Spec Required Frequency.Caused by Not Including Instruments in Plant Nuclear Test Schedule.Calibr Completed & Added to Schedule (← links)
- 05000315/LER-1985-046, :on 850907,ESF Reactor Trip Signals & Loss of RHR Pumps Occurred Due to Loss of Power to Control Room Instrument Circuits.Caused by Personnel Error.Operator Counseled (← links)
- 05000315/LER-1985-042, :on 850829,control Room Emergency Air Intake Damper HV-ACRDA-2 Discovered Improperly Positioned.Caused by Incorrect Damper Adjustment Made as Result of Surveillance Procedure 12 Thp 4030 STP.229.Damper Correctly Adjusted (← links)
- 05000315/LER-1985-044, :on 850902 & 07,steam Line Isolation Signal Generated ESF Actuation.Caused by solid-state Protection Sys Design Change Installation & Valving Out Instrumentation Lines,Respectively.No Corrective Action Taken (← links)
- 05000315/LER-1985-019, :on 850420,ice Inventory within Ice Condenser Determined to Be Below Tech Spec Limits.Cause Unknown.Ice Weight of Deficient Rows Increased by Ice Replenishment Program (← links)
- 05000315/LER-1985-017, :on 850417,accumulated Leakage Exceeded Tech Spec Limits Found While Performing Type B & C Leak Rate Tests.Cause Unknown.Penetrations Repaired (← links)
- 05000315/LER-1985-029, :on 850624,four Overhead Fire Doors & One Single Leaf Swinging Door Did Not Satisfy Surveillance Test Criteria.Caused by Improper Adjustment &/Or Drop Testing. Safety Evaluation Will Be Included in Update (← links)
- 05000315/LER-1983-088-03, /03L-0:on 830821,w/RCS in Mode 6,Train a Lower Containment Airborne Monitor Twice Removed from Svc for Repairs to Containment low-range Noble Gas Monitor.Caused by Failure in Detector I/O Card (← links)
- 05000315/LER-1983-087-03, /03L-0:on 830818,w/RCS in Mode 6,Train B Lower Containment Airborne Monitor Could Not Be Returned to Svc After Daily Routine Particulate Filter Change.Caused by Circuit Board Failures & Dirt in Microcomputer (← links)
- 05000315/LER-1983-086-03, /03L-0:on 830817,w/RCS in Mode 6,low Pressure Carbon Dioxide Fire Protection Sys Twice Removed from Svc to Perform Repairs on Hose Reel Header Sys.Caused by Open Pilot Valve Solenoid Coil.Coil Replaced (← links)
- 05000315/LER-1985-021, :on 850429,reactor Vessel Flow Requirement Not Verified Prior to RCS Boron Dilution.Procedure for Filling Reactor Refueling Cavity Revised to Include Verification/ Documentation of Reactor Vessel Flow During RCS Dilution (← links)
- 05000315/LER-1985-020, :on 850429,low Pressure CO2 Fire Suppression Sys for Quadrant 1 of Reactor Cable Tunnel Isolated W/O Fire Watch Coverage.Caused by Personnel Error.Personnel Counseled (← links)
- 05000315/LER-1985-023, :on 850502,definition of Auxiliary Bldg Crane Load Block as Being Heavy Load Not Emphasized in Plant Procedures.Cautions Will Be Added to Applicable Plant Procedures by 850615 (← links)
- 05000315/LER-1985-022, :on 850502 & 04-07,during Refueling,High Alarms Received on Lower Containment Monitor Particulate Channels ERS-1301 & ERS-1401.Caused by Fluctuation Activity Resulting in Erroneous Alarms.Value Will Be Updated (← links)
- 05000315/LER-1985-027, :on 850604,during Hydrostatic Testing,Three 8-inch Diameter Fire Penetrations Found Nonfunctional.Cause for Removal of Silicone Foam Undetermined.Openings Sealed & Safety Evaluation Performed (← links)
- 05000315/LER-1985-018, :on 850416,fire Barrier Inoperable.Caused by Lack of Fire Sealant Matl in Two Floor Penetrations. Penetrations Sealed,Declared Operable & Added to Surveillance Program (← links)
- 05000315/LER-1985-025, :on 850515,continuous Fire Watch Coverage Not Provided within 1 H Time Limit Following Failure of Low Pressure C02 Fire Protection Valve Operator to Close.Caused by Lack of Fire Watch Personnel (← links)
- 05000315/LER-1985-007, :on 850222,control Room Pressure Could Not Be Maintained at +1/+6 Inches Wg Relative to Outside Atmosphere.Flow Rates Satisfactorily Adjusted & Unit Returned to Power.Mods Being Developed (← links)
- 05000315/LER-1985-015, :on 850408,09 & 11,several Spurious High Alarms Received on Lower Containment Radiation Monitor Particulate Channels Ers 1301 & Ers 1401.Caused by Jump in Rate Count. New Program Chips Purchased (← links)
- 05000315/LER-1985-014, :on 850407,fire Watch Unable to Conduct Insps of Seismic Gap Fire Barrier Seals.Caused by Broken Locking Mechanism on Fire Door 325 (← links)
- 05000315/LER-1985-013, :on 850407,w/RCS in Mode 3,spray Additive Tank Room Fire Door 529 Found Blocked Open W/O Fire Watch Coverage.Caused by Personnel Error.Blockage Removed (← links)
- 05000315/LER-1985-016, :on 850412,w/RCS in Mode 3,vent Inside Containment Opened to Drain Header & Vent Outside Containment Opened to Drain Hxs,Creating Flow Path from Inside to Outside Containment.Procedure Revised (← links)
- 05000315/LER-1985-024, :on 850507,inoperable Fire Barrier Discovered. Caused by Defective Fire Seal.Fire Watch Established.Const & Maint Depts Requested to Review Event W/Personnel Responsible for Performing Work (← links)
- 05000315/LER-1982-003-04, /04X-1:on 820115,unplanned Gas Release Detected by Elevated Vent Stack Gaseous Monitor Reading.Cause Undetermined.Procedure for Helium Gas Test Changed to Allow One Portion of Waste Gas to Be Tested (← links)
- 05000315/LER-1985-011, :on 850407,containment Purge Begun Per Approved Procedure Which Established More than on Purge Supply & Exhaust Path.Procedure Not Allowed Per Tech Spec 3.6.1.7. Procedures Changed (← links)
- 05000315/LER-1984-007, :on 840528,error Discovered in Detector Code Used for Analysis of First 47 Cycle 8 Flux Maps.Caused by Input Error.Code Corrected & line-by-line Review of Coding Changes Made.Requests Extension for Completion (← links)
- 05000315/LER-1985-010-01, :on 850112 & 0406,dose Equivalent I-131 of Reactor Coolant Exceeded Tech Spec Limit.Caused by Leaking Fuel Assemblies.Fuel Sipping Will Be Performed During 1985 Refueling Outage (← links)
- 05000315/LER-1985-008-01, :on 850314,low Pressure Carbon Dioxide Fire Suppression Sys Removed from Svc W/O Proper Fire Watch Coverage.Caused by Nonlicensed Planning Personnel Error. Individuals Counseled (← links)
- 05000315/LER-1984-035, :on 841221,during Review of 18-month Surveillance Test Procedure for Ice Condenser Intermediate Deck Doors,Seven Doors Exceeded Tech Spec Requirement.Doors Lubricated & Tested (← links)
- 05000315/LER-1984-034, :on 841212,instructions for Containment Pressure Relief Procedures Discovered W/Step That Could Result in Exceeding Release Limits of Tech Spec 3.11.2.1. Cause Not Stated.Step Replaced (← links)
- 05000315/LER-1984-033, :on 841206,fire Doors 313,343 & 314 Not Declared Inoperable During post-maint Review of Tech Spec. Caused by Personnel Error in Interpreting Procedures. Inspector Reinstructed Re Door Operabilty Requirements (← links)
- 05000315/LER-1984-032-01, :on 841206-17,hourly Insp of Inoperable Fire Doors Not Performed.Caused by Coordination Problems W/Implementation of Fire Watch Program.Insp Frequency Increased & Use of Log Book Implemented (← links)
- 05000315/LER-1985-005-01, :on 850205,discovered That Sample Medium Designated in Tech Spec 3.11.2.1 Not Used.Caused by Personnel Error.Tech Spec Change Re Use of Iodine Will Be Implemented (← links)
- 05000315/LER-1984-030-01, :on 841129,hydrogen Sampling Not Performed Per Tech Specs.Caused by Repairs Taking Place at Time Sampling Was to Be Performed.Shorter Sampling Intervals Established (← links)
- 05000315/LER-1984-029-01, :on 841112,w/RCS in Mode 1 at 50% power,8 H Grab Sample Not Made on Time as Required When Auxiliary Bldg Vent Radiation Monitor Inoperable.Caused by Personnel Error. Technician Instructed Re Priority of Sampling (← links)
- 05000315/LER-1984-028-01, :on 841115,w/Units 1 & 2 at 100% Full Power, Timely Insp Not Made of Inoperable Fire Doors Protecting Reactor Cable Tunnels.Caused by Personnel Error.Fire Watch Received Written Reprimand (← links)
- 05000315/LER-1985-004, :on 850129,w/reactor in Mode 1,high Alarm Received on Lower Containment Radiation Monitor That Resulted in Containment Isolation.Caused by Upward Trend in Containment Airborne Activity (← links)
- 05000315/LER-1985-002-01, :on 850118,discovered That Required Daily Auxiliary Bldg Vent Sample Not Taken on 850111-17.Required Daily Samples Collected on 850118 & 19.Surveillance Requirement Added & Procedures Revised (← links)
- 05000315/LER-1985-003, :on 840116,Train a Battery Not Declared Inoperable Per Tech Spec 4.8.2.4.2.Caused by Misunderstanding Between Personnel.Requirement Will Be Added to Surveillance Procedure (← links)
- 05000315/LER-1985-001, :on 850105,fire Watch Failed to Conduct 2330 Hourly Insp of Inoperable Fire Barrier Penetration Seals & Dampers in Unit 1 & 2 Charging Pump Rooms.Caused by Inadequate Turnover of Tour Assignments (← links)
- 05000315/LER-1984-021, :on 840829,calibr Constants Used by Eberline Radiation Monitoring Sys to Convert Channel Response in Counts Per Minute Into Units Calculated Incorrectly.Caused by Procedural Error (← links)
- 05000315/LER-1984-025-01, :on 841108,firewater Ring Header Valve Surveillance Not Performed Per Tech Spec Requirements.Caused by Misidentification & Poor Labeling of Valves.Pipes & Valves Properly Labeled & Diagrams & Descriptions Corrected (← links)
- 05000315/LER-1984-027, :on 841111,fire Watch Performed 25 Minutes Late in Hourly Insp of Inoperable Fire Door Protecting Reactor Cable Tunnel.Caused by Personnel Unfamiliarity W/Bldg Layout & Inadequate Briefings (← links)
- 05000315/LER-1984-026-01, :on 841108,8 H Grab Sample Not Taken & Analyzed for Gross Activity Per Tech Spec Requirements. Caused by Deficiency in Communications.Personnel Reinstructed on Notification Procedures (← links)
- 05000315/LER-1985-007-01, :on 850222,controlled Shutdown Initiated. Caused by Inoperable Control Room Emergency Ventilation Sys. Analysis of Potential Radiological Consequences of Operation at Higher Flow Rates Performed.Room Balanced (← links)
- 05000315/LER-1984-020-01, :on 840822,control Room Cable Vault Supply Fan Damper Found Inoperable.Caused by Short Section of Conduit Prohibiting Damper from Functioning.Obstruction Removed & Operability Verified (← links)
- 05000315/LER-1984-019-01, :on 840818,ability of Turbine Driven Auxiliary Feed Pumps to Meet Safety Function Questioned During NRC Audit.Caused by Governor Setting at 50%.Unit 1 Settings Changed to 85% & Unit 2 to 90% (← links)
- 05000315/LER-1984-018-01, :on 840814,CRID IV Inverter Abnormal Alarm Activated Due to Crid Failure,Resulting in Reactor Trip & Safety Injection.Caused by Leaking Water from Emergency Shower & Eyewash Station.Design Change Planned (← links)
- 05000315/LER-1984-017-01, :on 840810,high Level in Steam Generator 4 Caused Operating Main Feedpump Trip,Resulting in Automatic Actuation of Motor Driven Auxiliary Feedpumps & Feedwater Isolation.Caused by Personnel Error.Personnel Counseled (← links)
- 05000315/LER-1984-016-01, :on 840808,auxiliary Feedwater Pumps Stopped & Control Switches Placed in Neutral to Prevent Restarting Due to Main Feedpump Trip.Caused by Inaccurate Procedures. Operators Instructed to Leave Switches in Mode 3 (← links)
- 05000315/LER-1984-015-01, :on 840728 & 29,Tech Spec 3.3.3.1,Action Statement 19 Violated Due to Failure to Complete Daily Survey of Spent Fuel Storage Area.Caused by Personnel Error. Written Instructions Improved (← links)
- 05000315/LER-1984-014-01, :on 840716,nonlicensed Operator Mistakenly Isolated North Low Head Safety Injection Pump.Caused by Personnel Error.Procedure Revised (← links)
- 05000315/LER-1984-013-01, :on 840706,discovered That Fire Watch Not Maintained in Area Fire Retardant Matls Removed from Previously Protected Conduit Containing safety-related Cables.Fire Watch Patrol Initiated (← links)
- 05000315/LER-1984-024-01, :on 841002,during Surveillance Test,Spent Fuel Pool Exhaust Ventilation Sys Dampers Did Not Change Position to Direct Air Flow Through Charcoal Adsorbers.Cause Unknown.Investigation Revealed No Reason (← links)
- 05000315/LER-1984-020, :on 840822,control Room Cable Vault Supply Fan Damper Found Blocked Open W/Obstructed Conduit.Caused by Personnel Using Conduit to Hold Dampers Open.Administrative Policy Changes Established (← links)
- 05000315/LER-1984-023-01, :on 840709,steam Generator Blowdown Sample Not Composited Per Tech Spec Requirements.Cause Unknown.Ltr Issued to Insure Adequate Sample Vol Taken Whenever Sample Obtained (← links)
- 05000315/LER-1984-022-01, :on 840912,during Review of Setpoint Adjustment Formula,Incorrect Dose Rate Factors Discovered Calculated Using Setpoint 3 Computer Program.Caused by Erroneous Gaseous Waste Release Dose Rates Calculation (← links)
- 05000315/LER-1984-011-01, :on 840621,both Trains of ESF Ventilation Sys Inadvertantly Made Inoperable During Testing.Caused by Control Switch for Fan Placed in Stop Instead of Auto.Test Procedure Changed (← links)
- 05000315/LER-1984-021-01, :on 840829,discovered Calibr Constants for Eberline Radiation Monitoring Sys Calculated Incorrectly for Secondary Source.Caused by Error in Procedure.Procedure Changed & Calibr Constants Corrected (← links)
- 05000315/LER-1984-007-01, :on 840522,detector Code Programming Error Discovered in Calculational Logic While Modifying Code. Procedure Change Made to Require Independent Line by Line Review of Coding (← links)
- 05000315/LER-1984-006-01, :on 840510,personnel Discovered Fire Door 230 Inoperable W/O Fire Watch.Caused by Air Hose Passing Through Doorway Preventing Full Closure.Administrative Measures Instituted (← links)
- 05000315/LER-1984-005-01, :on 840504,sample Flow Pressure Reducing Valve to Waste Gas Sys Auto Gas Analyzer Discovered Inoperable.One Gas Compressor Remained Running in Violation of Tech Specs. Caused by Lack of Communication Between Shifts (← links)
- 05000315/LER-1984-012-01, :on 840623,automatic Actuation of Train a Containment Ventilation Isolation Sys Occured.Caused by Containment Air Particulate Radiation Monitoring Channel Exceeding High Alarm Setpoint (← links)
- 05000315/LER-1984-008-01, :on 840617,reactor Trip & Safety Injection Occurred from Loss of Control Room Instrument Distribution Invertor Iv.Caused by Shorted C-2 Capacitor on Shorting Circuit Board.Design Change Installed (← links)
- 05000315/LER-1984-010-01, :on 840617,reactor Trip & Safety Injection Occurred from Loss of Control Room Instrument Distribution Inverter Iv.Caused by Shorted C-2 Capacitor.Capacitor Replaced W/Higher Temp Rated Capacitors (← links)
- 05000315/LER-1983-053-01, /01T-0:on 830612,performance of Train B Boron Injection Tank Inlet Piping Heat Trace Circuitry Questioned But Train Not Declared Inoperable Until 830616.Missed Surveillance Under Investigation (← links)
- 05000315/LER-1984-009-01, :on 840321,flux Map Indicated That Tech Spec Surveillance Requirement 4.2.2.2.C Exceeded.Caused by self-imposed Conservatisms Resulting in Discrete Drop in Allowable Power Level W/Bank D Inserted (← links)
- 05000315/LER-1984-001-01, :on 840123,channel 1 (NFP-220) Control Room Flow Indication Dropped to Approx 90% Followed by Automatic Reactor Trip.Caused by Leaking Equalizing Valve.Equipment Tasks Reseached (← links)
- 05000315/LER-1983-083-03, /03L-0:on 830817,source Range Vitron Flux Monitor N-32 Became Erratic & Declared Inoperable.Caused by N-32 D8 Attenautor Set Low.Attenuator Adjusted & Returned to Svc (← links)
- 05000315/LER-1983-094-03, /03L-0:on 830922,4-kV Loss of Voltage Relays 27-1-T11D & 27-3-T11D Exceeded Tolerance.Caused by Instrument Drift.Relays Reset (← links)
- 05000315/LER-1983-093-03, /03L-0:on 830915,false Event Recorded on Diesel Generator Cd Room Peak Recording Accelerometer.Cause Not Stated.Personnel Cautioned (← links)
- 05000315/LER-1983-095-01, /01T-0:on 830928,3-inch Gate Valve Manual Isolation to 1-CFT-1 Containment Cleanup for Charcoal Bed Spray Nozzles Found W/Packing Leak.Caused by Packing Wear. Adjustment Stopped Leak.Leaks Unavoidable (← links)
- 05000315/LER-1984-004-01, :on 840409,during Surveillance Testing of Turbine Driven Auxiliary Feed Pump Using Revised Procedure, Throttle Trip Valve Failed to Trip Turbine.Caused by Excessive Steam Leakoff.Leakoff Line Capped (← links)
- 05000315/LER-1984-003-05, :on 840407,Fire Door 227 Inoperable Due to Electrical Cords Placed Through Penetration,Obstructing Closure.Fire Watch Established.Maint Personnel Reinstructed Re Rules Governing fire-related Tech Specs (← links)
- 05000315/LER-1984-002-01, :on 840401,ECCS Surveillance Procedure Error Discovered.Contributing Factor Was Mod to Quarterly Steps W/O Consideration of Abnormal Sys Conditions Caused by Monthly Steps of Procedure.Procedure Revised (← links)
- 05000315/LER-1983-121-01, /01T-0:on 831219,discovered That Continuous Charcoal & Particulate Samples Not Obtained.Caused by Inadequate Procedures.Auxiliary Sampling Equipment Utilized (← links)
- 05000315/LER-1983-122-03, /03L-0:on 831212,four Ice Condenser Intermediate Deck Doors Found Frozen Shut.Caused by Ice Accumulation Due to Leaking Drain Lines on Air Handlers 4-2A,4-4A & 1-5B.Ice Removed (← links)
- 05000315/LER-1983-072-03, During B & C Leak Rate Test,Several Containment Valves Showed Excessive Leakage. Caused by Dirt & Scale Deposit on Seating Surface,Erosion of Valve Seats & Incomplete Weld.Valves Cleaned (← links)
- 05000315/LER-1983-073-03, Min Average Ice Weight of Sample Ice Condenser Baskets Less than 1,220 Lb Per Basket. Caused by Natural Sublimation.Ice Mass Fully Reconditioned to Optimize Ice Density (← links)
- 05000315/LER-1983-120-03, /03L-0:on 831203,Fire Door 471 (Control Rod Drive Room Access Door),Would Not Latch Properly.Caused by Latch & Strike Plate Misalignment.Strike Plate Adjusted (← links)
- 05000315/LER-1983-119-03, /03L-0:on 831123,reservoir & Half of Retaining Clamp for Snubber 1-GRC-S594 Found Detached from Snubber. Caused by Loosening of Clamp Fasteners & Vibration.New Snubber Tested & Installed (← links)
- 05000315/LER-1983-118-03, /03L-0:on 831121,Fire Door 462 Would Not Latch Properly.Caused by Misaligned Latch Plate.Latch Plate Realigned & Door Closer Adjusted (← links)
- 05000315/LER-1983-117-03, /03L-0:on 831115,during Unit Startup,Channel 1 Declared Inoperable.Caused by Instrumental Drift.Transmitter Recalibr (← links)
- 05000315/LER-1983-116-03, /03L-0:on 831113,sliding Door to Auxiliary Feedpump Room Came Off Rail.Caused by Misaligned Notched Rollers & Ribbed Track.Door Placed on Track.Retainer to Be Installed (← links)
- 05000315/LER-1983-115-03, /03L-0:on 831019,17 safety-related Fire Doors Intentionally Made Inoperable to Perform Corrective Door Frame Maint.Caused by Maint Performed While Equipment Required to Be Operable (← links)
- 05000315/LER-1983-112-03, /03L-0:on 831103,steam Generator 2 Blowdown Isolation Valve DCR-320 Indication Remained in mid-position. Caused by Sheared Steam Coupling Bolt.Bolt Replaced (← links)
- 05000315/LER-1983-114-01, /01T-0:on 831118,during Venting of Vol Control Tank to Waste Gas Holdup Sys,Oxygen & Hydrogen Concentration Exceeded 4% Limit.Caused by Inadequate Procedures.Tank Vented.Communicating Procedures Revised (← links)
- 05000315/LER-1983-113-01, /01T-0:on 831117,during Surveillance Testing,Loop 1 Overpower Delta Temp Rod Stop & Reactor Trip Bistable Failed in Trip State.Loop 2 Also Failed High.Cause Not Stated.Temp Rod Stop & Reactor Trip Replaced (← links)
- 05000315/LER-1983-111-03, /03L-0:on 831024,steam Generator 1-4 Channel IV Pressure Transmitter Removed from Svc to Allow for Repair of Steam Leak Between Transmitter & Transmitter Isolation Valve.Leak Repaired by Replacing Tubing (← links)
- 05000315/LER-1983-110-03, /03L-0:on 831020,during post-refueling Startup, Fire Suppression Water Sys to Drumming Cask Handling Area Isolated for Repair of Priming Valve on Cask Handling Area Deluge Valve,Contrary to Tech Spec 3.7.9.2 (← links)
- 05000315/LER-1983-109-03, /03L-0:on 831024,discovered That Containment Sump Flow Monitoring Recorder (1-CS-001) Chart Paper Not Advancing.Cause Not Determined.Chart Paper Adjusted & Recorder Verified.Design Change Initiated (← links)
- 05000315/LER-1983-108-03, /03L-0:on 831018,steam Generator 1-1 Channel II Pressure Transmitter Removed from Svc to Allow Furmanite Injection of Instrument Root Valve & Blowdown at Sensing Line.Channel Returned to Svc in 3 H 40 Minutes (← links)
- 05000315/LER-1983-106-03, /03L-0:on 830805,surveillance Testing of Steam Generator Snubber 25.12620.007-7 Revealed Inability to Lockup During Normal & Restrained Operating Mode Testing. Caused by Worn Piston Seals.Seals & O-rings Replaced (← links)
- 05000315/LER-1983-105-03, /03L-0:on 831011,channel Functional Test for Pressurizer PORV Emergency Air Pressure Alarms Not Performed Per Tech Specs.Caused by Personnel Error.Nuclear Test Scheduler Computer Changed to Show Correct 31 Days (← links)
- 05000315/LER-1983-104-03, /03L-0:on 831011,diesel Generator Cd Output Circuit Breaker T11C3 Failed to Close on Undervoltage Condition on Bus T11C.Caused by Coil on Diesel Generator Cd Running Relay Being Opened.Relay Replaced (← links)
- 05000315/LER-1983-103-03, /03L-0:on 831007,during Refueling Outage,Fire Suppression for safety-related Ventilation Units Isolated to Repair Isolation Valve FP-277.Caused by Stripped Valve Stem Threads.Bonnet & Stem Valve 1513N Replaced (← links)
- 05000315/LER-1983-101-03, /03L-0:on 830929,during Diesel Generator Load Shedding Test,Agastat 4 Kv Bus Degraded Voltage Relay Timer 62-1-T11D Exceeded Max Allowable Time Tech Spec Limit.Caused by Instrument Drift.Design Change Approved to Replace Rel (← links)
- 05000315/LER-1983-100-03, /03L-0:on 830929,during Diesel Generator Load Shedding Test,Two Agastat Model 7012 Relay Timers Exceeded Tech Spec Tolerance Limit.Caused by Instrument Drift.Design Change Approved to Replace Timers W/Model 9312 (← links)
- 05000315/LER-1983-099-03, /03L-0:on 830926,during Insp of Ice Condenser Flow Passages,Six Ice Condenser Bays Had Partial Flow Blockage Due to Ice Buildup.Caused by Ice Basket Weighing.Bays Cleared of Ice Blockage (← links)
- 05000315/LER-1983-102-01, /01T-0:on 831013,Part 21 Notification Received from Westinghouse Which Resulted in Possible Nonconservative Low Pressurizer Pressure ESF Actuation Setpoint.Setpoints Adjusted Prior to Entering Mode 4 (← links)
- 05000315/LER-1983-097-03, /03L-0:on 830921,during Refueling Outage,Fire Door 373 Would Not Latch Properly to 591 Elevation Vestibule Area.Caused by Sticky Latch Mechanism.Mechanism Adjusted,Lubricated,Tested & Returned to Svc (← links)
- 05000315/LER-1983-096-03, /03L-0:on 830924,during Refueling Outage,Fire Door 517 Would Not Latch Properly Between Contractor Access Control & Auxiliary Bldg.Caused by Loose Active Leaf Latching Mechanism.Mechanism Tightened (← links)
- 05000315/LER-1983-089-03, /03L-0:on 830628,31-day Visual Verification of Blind Flange Over Fuel Transfer Tube CPN-1 Deleted from All Revs.Caused by Verification Deleted in 750407 Rev.Change Sheet Written to Include CPN-1 in Procedure (← links)
- 05000315/LER-1983-091-03, /03L-0:on 830829,during Refueling Outage,Fire Door Leading to Contractor Access Area Inadvertently Damaged When Door Closed W/Piece of Steel Between Door Jam & Edge of Door.Caused by Personnel Error.Door Repaired (← links)
- 05000315/LER-1983-057-03, /03L-0:on 830602,during Normal Operation,Steam Generator 4 Blowdown Containment Isolation DCR-340 Failed Closed.Caused by Ruptured Diaphragm of Valve Operator. Diaphragm Replaced.Valve Stroke Limits Adjusted (← links)
- 05000315/LER-1983-056-03, /03L-0:on 830601,during Surveillance Test,Check Valve NS-262 Found Leaking.Caused by Dirt Buildup on Valve Seating Surfaces.Check Valve Disassembled & Cleaned (← links)
- 05000315/LER-1983-127-03, /03L-0: on 831223,Fire Door 519 Found Partially Open.Caused by Personnel Attempting to Use Door.Positive Lock Mechanism Fabricated & Installed (← links)
- 05000315/LER-1983-126-03, /03L-0:on 831230,RCS Average Temp DNB Parameter of 570.5 F Exceeded for Two Short Periods of Time.Caused by Operator Holding Turbine Control Valve Closed to Gather Turbine Control Data.Alarm Setpoint Lowered (← links)
- 05000315/LER-1983-130-03, /03L-0:on 831230,during Normal Operations,Air Leak Discovered on Steam Generator Blowdown Sample Containment Isolation Valve 4 (DCR-304).Caused by Degraded O-ring Inside Valve operator.O-ring Replaced (← links)
- 05000315/LER-1983-129-03, /03L-0:on 831228,during Normal Operation,Fire Door 471 Would Not Fully Close & Latch.Caused by Latch Plate Being Misaligned W/Latch Bolt of Active Leaf.Latch Plate Aligned & Door Closers Adjusted (← links)
- 05000315/LER-1983-128-03, /03L-0:on 831226,during Performance of Diesel Generator AB Operability Test,Diesel Generator Tripped on Apparent Overspeed Condition.Caused by Loose Ground Wire Associated W/Electronic Tachometer Circuit (← links)
- 05000315/LER-1983-125-03, /03L-0:on 831212,one safety-related Fire Door Intentionally Made Inoperable to Perform Corrective Maint on Door Frame.Renovation Project Includes 84 Fire Doors. Tentative Completion Date Is Late 1984 (← links)
- 05000315/LER-1983-124-03, /03L-0:on 831217,fire Detection Sys Alarm for Zone 14 in Auxiliary Bldg Received in Control Room.Cause Unknown.New Detector,Mfg by Pyratronic,Installed (← links)
- 05000315/LER-1983-123-03, /03L-0:on 831216,during Replacement of Mirror Insulation of Porv,Cable for Acoustic Valve Monitor Accelerometer SV-456 Cut.New Cable Installed (← links)
- 05000315/LER-1983-092-03, /03L-0:on 830912,essential Svc Water Pump 1W Relay Timer Exceeded Tech Spec Tolerance.Caused by Instrument Drift.Timer Recalibr (← links)
- 05000315/LER-1983-075-99, Discovered Check Valve RH-142 Exceeded Allowable Leak Rate.During Repairs,Disc Lapped & Seat Inspected.Check Valve Reinstalled W/New Gasket (← links)
- 05000315/LER-1983-085-03, /03L-0:on 830817,train a Lower Containment Airborne Monitor Declared Inoperable Due to Failure of Control Terminal.Caused by Central Processing Unit Being in Locked Up State.Unit Reset (← links)
- 05000315/LER-1983-082-03, /03L-0:on 830815,train a Lower Containment Airborne Monitor ERS-1300 Declared Inoperable.Caused by Piece of Metal on Circuit Board Connector.Circuit Boards Cleaned (← links)
- 05000315/LER-1983-081-03, /03L-0:on 830815,malfunction in Loop 3 Overtemp delta-T Channel III Circuitry Identified.Caused by Failed Universal Logic Card A-313.Card Replaced (← links)
- 05000315/LER-1983-080-03, /03L-0:on 830809,spent Fuel Storage Pool Exhaust Ventilation Sys Removed from Svc to Repair Bound Common Rollomatic Roughing Filter.Caused by Loose Screws on Sprockets.Screws Tightened & Filter Element Replaced (← links)
- 05000315/LER-1983-084-03, /03L-0:on 830811,during Breaker Panel Removal from Svc for Routine Breaker Cleaning,Power to Pump for Containment Airborne Monitor ERS-1400 Removed.Caused by Inaccurate Drawing.Drawing Revised (← links)
- 05000315/LER-1983-078-01, /01T-0:on 830831,adequately Designed tie-down Features Not Installed on Pressurizer Ventilation Sys Inside Containment.Caused by Inadequate Administrative Controls During Design Mod (← links)
- 05000315/LER-1983-076-03, /03L-0:on 830807,during Refueling Shutdown,Fire Detection Sys Alarm for Zone 3 in Auxiliary Bldg Received in Control Room.Caused by Faulty Detector Setpoint.New Detector Installed (← links)
- 05000315/LER-1983-061-03, /03L-0:on 830627,operator Discovered That Containment Sump Flow Monitoring Recorder 1-CS-001 Not Advancing.Caused by Personnel Error.Chart Drive Not Turned Back On.Diligence Emphasized W/Operator (← links)
- 05000315/LER-1983-060-03, /03L-0:on 830624,security Officer Found Carbon Dioxide Switch for Cd Diesel Generator Room in Isolate Position W/No One in Room.Caused by Personnel Error. Personnel Conference Re Fire Protection Held (← links)
- 05000315/LER-1983-059-03, /03L-0:on 830624,during Normal Operation,Control Room Access Fire Door 412 Failed to Operate Properly.Caused by Failure of Closure Support Arm.Closure Arm Repositioned & Closing Spring Tightened (← links)
- 05000315/LER-1983-058-03, /03L-0:on 830609,operator Discovered That Containment Sump Flow Monitoring Recorder (1-CS-001) Not Advancing.Caused by Holes in Chart Paper.Chart Paper Realigned on Drive Wheel (← links)
- 05000315/LER-1983-079-01, /01T-0:on 830824,control Room Smoke Detectors Declared Inoperable Since Util Had Not Demonstrated Detectors Will Perform as Installed.Caused by Requirement Misinterpretation.Sys Will Be Tested (← links)
- 05000315/LER-1983-070-03, /03L-0:on 830723,during Refueling Operation,Fire Door 373 to Elevation 587 Vestibule Area Would Not Latch Properly.Caused by Barrel Retaining Ring in Contact W/Knob. Ring Adjusted & Set Screw Tightened (← links)
- 05000315/LER-1983-069-03, /03L-0:on 830719,during Surveillance Testing on Diesel Generator Load Shedding Relays,Six GE Model NGV-13b Loss of Voltage Relays Exceeded Tech Spec Limit.Caused by Instrument Drift.Relays Readjusted (← links)
- 05000315/LER-1983-068-03, /03L-0:on 830715,ice Condenser Intermediate Deck Door Found Frozen Shut.Caused by Failed Defrost Heater for Handling Unit 3-7A.Ice Removed & Defrost Heater Replaced (← links)
- 05000315/LER-1983-065-03, /03L-0:on 830709,fire Barrier Seal Installed in Spray Additive Tank Room When Numerous Other Unsealed Penetrations Noted within Same Room.Caused by Lack of Communication.Fire Watch Posted (← links)
- 05000315/LER-1983-064-03, /03L-0:on 830707,east Component Cooling Water Miscellaneous Header Isolation Valve CMO-415 Would Not Close Completely from Control Room.Cause Unidentified.Valve Operated Satisfactorily During Retest (← links)
- 05000315/LER-1983-067-03, /03L-0:on 830712,circuit Breaker for Containment Equalization Fan HV-CEQ-1 Tripped.Cause Not Determined. Breaker Replaced (← links)
- 05000315/LER-1983-066-03, /03L-0:on 830711,leak Developed from Packing Seal Water Supply Line of Component Cooling Water Pump.Caused by Failure of 3/8-inch Isolation Valve on Supply Lines.Lines Removed & Pipe Plugs Installed (← links)
- 05000315/LER-1983-033-03, /03L-0:on 830409,during Normal Operation,Following Daily Routine Particulate Filter Change on Lower Containment Airborne Monitor,Train B ERS-1400 Failed to Operate. Cause Unknown.Flush Channel Cleared (← links)
- 05000315/LER-1983-024-03, /03L-0:on 830317,during Normal Operation,Fire Door 517 from Contractor Access Control to Auxiliary Bldg Would Not Close Properly.Caused by Extended Dead Bolt Lock Preventing Doors from Closing.Dead Bolt Removed (← links)
- 05000315/LER-1983-031-03, /03L-0:on 830407,while Attempting to Exit Upper Containment,Outer Door of Personnel Airlock Would Not Open. Caused by Interlock Cable Being Out of Adjustment.Cable Replaced (← links)
- 05000315/LER-1983-023-03, /03L-0:on 830310,diesel Generators A-B Inverter Failed Twice Rendering Generator Inoperable.Caused by Blown Fuses Due to High Ambient Room Temp.Room Inlet Ventilation Dampers Opened & Room Temp Lowered (← links)
- 05000315/LER-1983-021-03, /03L-0:on 830304,612-ft Elevation Containment Air Lock Interlock Found Inoperable.Caused by out-of-adjustment Cable.Cable Adjusted (← links)
- 05000315/LER-1983-020-03, /03L-0:on 830306,control Room Access Fire Door 412 Would Not Operate Properly.Caused by Extension Rod Pulling Loose from Door Frame Shoe.Shoe Setscrews & Rod Replaced (← links)
- 05000315/LER-1983-019-03, /03L-0:on 830313,612-ft Elevation Containment Air Lock Interlock Found Inoperable.Caused by out-of-adjustment Cable.Cable Adjusted (← links)
- 05000315/LER-1983-018-03, /03L-0:on 830303,upper Containment Personnel Air Lock Door Leakage Rate Found Excessive.Caused by Dirt & Tape Affixed to Outer Door Seals During Equipment Installation. Dirt & Tape Removed (← links)
- 05000315/LER-1983-017-03, /03L-0:on 830303,excessive Leakage Rates Noted at Upper & Lower Containment Personnel Air Lock Doors.Caused by Personnel Not Removing Grease Fittings After Lubrication. Fittings Replaced (← links)
- 05000315/LER-1983-016-03, /03L-0:on 830314,control Room Air Cleanup Charcoal Filter (1-HV-ACRF) Detection Sys Found Inoperable.Caused by Failed Electronic Detection Circuit Board.Circuit Board Replaced (← links)
- 05000315/LER-1983-050-03, /03L-0:on 830523,five 4-kV Bus Degraded Voltage Relays 27-T11A-1 & 2 & 27-T11D-1,2 & 3,found to Have Exceeded Tolerance.Caused by Instrument Drift.Diesel Generator Load Shedding Relays Readjusted (← links)
- 05000315/LER-1983-049-03, /03L-0:on 830520,review of Surveillance Log Revealed Containment Air Lock 3-day Door Tests Not Performed in Required Time.Caused by Lack of Understanding.Test Responsibility Assigned to One Individual (← links)
- 05000315/LER-1983-048-03, /03L-0:on 830518,security Guard Discovered Diesel Room Cd Cardox Sys Isolated W/No Names on Entry Board & No Personnel in Room.Caused by Technician Error.Need for Full Compliance W/Fire Protection Rules Emphasized (← links)
- 05000315/LER-1983-046-03, /03L-0:on 830511,east Centrifugal Charging Pump 600-volt Breaker Miniflow Valve Found Open.Cause Not Determined.Shiftly Valve Insps Initiated.Corrective Actions Not Planned (← links)
- 05000315/LER-1983-045-03, /03L-0:on 830519,Fire Door 519 Would Not Latch. Cause Not Stated.Strike Plate Replaced & Door Closer Mechanism Adjusted (← links)
- 05000315/LER-1983-044-03, /03L-0:on 830515,containment Sump Flow Monitoring Recorder 1-CS-001 Chart Paper Did Not Advance.Caused by Ripped Holes in Paper.Chart Paper Realigned on Drive Wheel (← links)
- 05000315/LER-1983-042-03, /03L-0:on 830512,during Surveillance Test on Pressurizer Pressure Protection Set Iii,High Pressure Reactor Trip Bistable Would Not Trip.Caused by Defective High Pressure Reactor Trip Bistable.Bistable Replaced (← links)
- 05000315/LER-1983-041-03, /03L-0:on 830509,during Surveillance Test on Automatic Load Sequence Timing Relays,Two Relay Timers Found to Exceed Tech Spec Tolerance.Caused by Instrument Drift.Relay Timers Will Be Replaced (← links)
- 05000315/LER-1983-047-01, /01T-0:on 830525,during Audit,Discovered Testing of Steam Generator Stop Valve Not Performed During 830327 Startup.Caused by Ambiguous Due Dates on Status Upgrade Sheets.Lists Reviewed & Dates Clarified (← links)
- 05000315/LER-1983-013-03, /03L-0:on 830201,when Maint Supervisor Clearance Placed on MRV-212 Steam Generator 1 Stop Valve Dump Valve to Repair Seat Leakage,Valve Declared Inoperable.Valve Cage & Plug Replaced (← links)
- 05000315/LER-1983-012-03, /03L-0:on 830203,fire Door 460 Blocked Open. Caused by Metal Plate Between Door Stop & Door.Metal Piece Removed (← links)
- 05000315/LER-1982-075-03, /03L-0:on 820817,while Verifying ECCS Subsys Flow Rates,Personnel Discovered Flow Rates Previously Established Based on Valve Position May Not Have Been within Tech Specs Limits.No Cause Stated.Improved Methodology Developed (← links)
- 05000315/LER-1983-038-03, /03L-0:on 830421,during Normal Operation,Design Discrepancy in Wiring Discovered in Lower Containment Airborne Monitor Train A.Caused by Voltage Dips in Wiring. Wiring Corrected & Monitor Returned to Svc (← links)
- 05000315/LER-1983-037-01, /01T-0:on 830416,12-h Grab Sampling Requirement of Tech Specs Not Met.Caused by Individual Attempting to Repair Hydrogen Monitor Unable to Obtain Sampling at Required Time (← links)
- 05000315/LER-1981-041-03, Electrical Ground Traced to B Train Heaters from Boron Injection Tank.Caused by burned-up Heater Element & Associated Power Cable.Heater & Power Cable Replaced (← links)
- 05000315/LER-1982-111-03, During Normal Operation, Auxiliary Cable Vault Experienced Inadvertent Carbon Dioxide Discharge.Caused by Isolation of Main Carbon Dioxide Tank. Valve Isolating Tank Closed & Main Isolation Reopened (← links)
- 05000315/LER-1983-036-03, /03L-0:on 830418,eight Charcoal Filter Fill Hole Covers on 12-HV-AFX Spent Fuel Storage Pool Exhaust Ventilation Sys Found Loose.Caused by Lack of Procedure Specifying Correct Matl.New Procedure Written (← links)
- 05000315/LER-1983-035-03, /03L-0:on 830414,deluge Valves for Instrument Room Purge Exhaust 1-HV-CIPX-1 & Control Room Cleanup Sys 1-HV-ACRF-1 Would Not Open Upon Actuation Signal.Caused by Failure of Time Delay Circuit Boards (← links)
- 05000315/LER-1983-034-03, /03L-0:on 830413,pyralarm Detector Alarmed & Found Unplugged,Rendering Fire Zone 4 Detectors Inoperable.Caused by Failure to Plug in Alarm After Conduit Installation. Pyralarm Reinstalled & Sys Verified Operable (← links)
- 05000315/LER-1983-015-03, /03L-0:on 830203,during Normal Operation,Control Room Access Fire Door 412 Failed to Operate Properly.Cause Not Stated.Door Closer Mechanism Replaced (← links)
- 05000315/LER-1983-002-03, /03L-0:on 830125,ice Condenser Intermediate Deck Door Weighing Procedure Revealed 70 Doors Exceeded Max Initial Opening Force Specs.Caused by Misalignment &/Or Dented Hinges.Hinges Realigned & Lubricated (← links)
- 05000315/LER-1983-011-03, /03L-0:on 830125,while Repairing Transfer Pump 2 Ba,Pump 1 Ba Removed from Svc.Caused by Excessive Seal Leakage Due to Bearing Failure (← links)
- 05000315/LER-1983-001-03, /03L-0:on 830118,Unit 2 Auxiliary Cable Vault Experienced Inadvertent Carbon Dioxide Discharge,Resulting in Isolation of Unit 1 & 2 Carbon Dioxide Tanks.Valve Closed & Main Isolation Reopened (← links)
- 05000315/LER-1983-009-01, /01T-0:on 830201,operator Found Spray Additive Tank Outlet Valve Sealed in Closed Position.Caused by Operators Being Distracted During Performance of Test.Review of Startup Test Procedure Schedule Underway (← links)
- 05000315/LER-1982-109-03, /03L-0:on 821223,operator Discovered One Intermediate Deck Door Frozen Shut.Caused by Plugged Drain Causing Ice to Build Up & Overflow in Air Handling Unit.Air Handling Unit Repaired (← links)
- 05000315/LER-1983-004-03, /03L-0:on 830109,during Surveillance Test on Containment Air Recirculation Fan HV-CEQ-1,fan Breaker Tripped.Cause Unknown.Motor Inspected,But No Deficiencies Discovered (← links)
- 05000315/LER-1983-003-03, /03L-0:on 830103,fire Door 385 Would Not Latch Upon Closing Due to Bent Door Knob Spindle.Cause Undetermined.Knob Spindle Replaced & Door Closer Adjusted (← links)
- 05000315/LER-1982-108-03, /03L-0:on 821227,security Officer on Tour Found Carbon Dioxide Switch for 4-KV Switchgear Room in Isolate Position W/No Personnel in Room.Caused by Misunderstanding of Responsibility for Requesting Security Guard (← links)
- 05000315/LER-1982-103-03, /03L-0:on 821127,fire Door 387 at Entrance to Quadrant 2 of Auxiliary Bldg Around Containment Found in Nonconservative Configuration.Caused by Active Leaf of Double Doors Closing Before Inactive Leaf (← links)
- 05000315/LER-1982-102-03, /03L-0:on 821118,Pryralarm Fire Detector in Auxiliary Bldg Zone 2 Alarmed.Caused by Low Setpoint. Detector Assembly Cleaned,Verified & Returned to Svc. Setpoint Adjusted (← links)
- 05000315/LER-1982-099-03, /03L-0:on 821025,during Mode 1,Channel 2 Lower Containment Pressure Indication (PPP-320) Found Reading Approx 1/2 Lb Higher than Other Channels.Caused by Water Collecting in Transmitter Junction Box Causing Corrosion (← links)
- 05000315/LER-1983-025-01, /01T-0:on 830405,cable Vault Halon Sys Failed to Meet Design Concentrations & Declared Inoperable.Cause Unknown.Review of Test Data & Sys Review Continuing (← links)
- 05000315/LER-1994-006, :on 940404,TS 3.7.10 Was Initiated Due to Finding of Seismic Gaps Filled W/Untreated Styrofoam. Instituted Insp Program (← links)
- 05000315/LER-1982-080-01, /01T-0:on 820923,discovered Analysis for Safety Injection Flow Water Temp Used Value of 70 F.Value of 80 F Used in Containment Spray Water Temp Analysis.Action Taken to Maintain Restorage Water Temp Above 80 F (← links)
- 05000315/LER-1982-088-03, /03L-0:on 820916,safety Valve Sv-1 for Steam Generator 3 Found Leaking.Cause Not Stated.Seat Leakage During Plant Heatup Not Uncommon.Leakage Stopped by Gagging Valve for Short Period of Time (← links)
- 05000315/LER-1982-087-03, /03L-0:on 820920,containment Gaseous Radiation Monitor Channel (ERS-1305) Failed High,Forcing Removal of Containment Air Particulate Monitor Channel from Svc.Caused by Defective I/O Card.Card Replaced (← links)
- 05000315/LER-1982-084-04, /04L-0:on 820912,unplanned Gas Release Detected by Elevated Vent Stack Gaseous Monitor.Caused by Leak on Waste Gas Oxygen Analyzer.Leak Repaired (← links)
- 05000315/LER-1982-085-03, /03L-0:on 820927,during Hot Standby Following Refueling,Steam Generator 2 Stop Dump Valve MRV-221 Removed from Svc.Caused by Need to Correct Seat Leakage.Valve Disc, Seat & Stem Replaced (← links)
- 05000315/LER-1982-083-03, /03L-0:on 820921,during Hot Standby Following Refueling,Leak Observed on Isolation Valve CS-422N. Caused by Failure of 2-inch Grinnell Grade M Diaphragm. Diaphragm Replaced (← links)
- 05000315/LER-1982-101-01, During Surveillance Test, Motor Operated Valve WMO-753 to West Turbine Driven Auxiliary Feed Pump Would Not Open.Caused by Valve & Exhaust Fan for Turbine Driven Auxiliary Feed Pump Room Malfunction (← links)
- 05000315/LER-1981-055-03, /03L-0:on 811117,inspector Identified safety- Related Fire Barrier Seal Penetrated by Electrical Conduit Rendering Seal Nonfunctional.Fire Watches Posted.Conduit & Sealing Requirements Are Being Evaluated (← links)
- 05000315/LER-1981-054-03, /03L-0:on 811117,while Investigating Spurious Alarms on Loop 3 Overpower,Overtemp Setpoints Went to Low End of Scale Causing Reactor Trip.Caused by Drifting of R/E Module.Module Replaced & Calibr (← links)
- 05000315/LER-1982-100-03, /03L-0:on 821105,during Normal Operation,Fire Door 437 Found Inoperable.Caused by Door Scraping on Stair Step.Clearance Between Door & Step Improved (← links)
- 05000315/LER-1982-096-01, /01T-0:on 821027,Pyralarm Detector Alarmed for No Apparent Reason.Caused by Low Setpoint on Alarm.Fire Watch Established & Setpoint Adjusted to Proper Value.Annunciator Response Procedures Changed (← links)
- 05000315/LER-1982-093-03, /03L-0:on 821006,fire Protection Sys Job Orders Indicated Fire Doors & Fire Dampers Protecting safety- Related Areas Were Not Documented as Having Operability Restored Following Repairs.Caused by Personnel Oversight (← links)
- 05000315/LER-1982-094-03, /03L-0:on 821007,west Component Cooling Water HX Essential Svc Water Discharge valve,WMO-737,removed from Svc Due to Leakage.Caused by Failure of H Pratt 16-inch Butterfly Valve (← links)
- 05000315/LER-1982-092-03, /03L-0:on 821002,protection Set 4 Bistables for Over Temp Delta T & Overpressure Delta T Tripped.Caused by Isolation Amplifier Sensitive to Vibration.Amplifier Replaced & Channel 4 Power Range Verified (← links)
- 05000315/LER-1982-091-03, /03L-0:on 820928,during Containment Entry, Equalizing Valve on Inner Door of Lower Containment Personnel Airlock Found Leaking.Caused by Loose Adjusting Nut.Nut Replaced & Valve Adjusted.Door Returned to Svc (← links)
- 05000315/LER-1982-090-03, /03L-0:on 821012,during Routine Surveillance,High Vibration Discovered at South Safety Injection Pump.Cause Not Stated.Shaft Straightened,Impellers Balanced,Spacer Sleeve,Locknut & Impeller Hubs Lapped & Motor Realigned (← links)
- 05000315/LER-1982-089-03, /03L-0:on 821005,during Routine Testing,Roll Up Fire Door 345 at Transformer Switchgear Room Did Not Close. No Mechanical Problems Discovered.No Further Action Planned (← links)
- 05000315/LER-1982-082-03, /03L-0:on 820908,low Pressure Carbon Dioxide Sys for AB Diesel Generator Room Discovered Isolated W/No Fire Watch Posted,Contrary to Tech Specs.Responsible Individual Undetermined.Personnel Trained in Fire Door (← links)
- 05000315/LER-1982-081-03, /03L-0:on 820908,during Routine Turbine Bldg Tour, Operator Discovered Cd Diesel Room Carbon Dioxide (CO2) Sys Isolated W/No Names on Entry Board & No Personnel in Room. Caused by Personnel Error.Proper Use of CO2 Sys Discus (← links)
- 05000315/LER-1982-079-01, /01T-0:on 820915,during Low Power Physics Testing Program Following End of Cycle 6 Refueling,Unit Entered Mode 2 W/Overpower & Overtemp delta-T Bistable in Nonconservative Configuration.Caused by Unclear Procedure (← links)
- 05000315/LER-1982-078-03, /03L-0:on 820825,unplanned Gas Release Detected by Vent Stack Gaseous Monitor R-26 Reading.Caused by Water Overflowing from Liquid Waste Holdup Tanks Into Room Vents & Vent Sys (← links)
- 05000315/LER-1982-076-03, /03L-0:on 820823,inverter for Emergency Diesel Generator 4B Failed,Leaving Only Centrifugal Charging Pump in Svc W/O Emergency Power Supply.Cause Not Stated.Charging Pump Shifted & Inverter Repaired (← links)
- 05000315/LER-1982-074-03, /03L-0:on 820816,during Refueling,Source Range Neutron Flux Monitor Audible Indication in Containment Could Not Be Distinguished to Provide Meaningful Indication of Count Rate Signal.Caused by Audio Multiplier Set Too High (← links)
- 05000315/LER-1982-073-03, /03L-0:on 820831,fire Door 373 Found Unable to Latch During Refueling Operations.Probably Caused by Misalignment of Inactive Leaf within Frame.Leaf Realigned by Shimming to Improve Flush Bolt Engagement (← links)
- 05000315/LER-1982-072-03, /03L-0:on 820817,min Average Ice Weight of Sample Baskets from Radial Rows 8 & 9 Found to Be Less than 1,220 1b/basket at 95% Confidence Level.Apparently Caused by Natural Sublimation.Ice Mass Added to Lacking Row Groups (← links)
- 05000315/LER-1982-071-03, /03L-0:on 820809,after Entering Mode 6,w/reactor Cavity Flooded,Routine Analysis of RCS Indicated Chloride Concentration of 0.2 Ppm.Caused by Chloride Contamination in Transfer Canal or Excessive Level in Spent Fuel Pit (← links)
- 05000315/LER-1983-008-03, /03L-0:on 830120,fire Door 385 Found Unlatched During Normal Operation.Caused by Insufficient Closer Mechanism Force.Door Closer Mechanism Adjusted (← links)
- 05000315/LER-1983-007-03, /03L-0:on 830120,AB Diesel Fire Door 319 Would Not Close Automatically When Opened During Normal Operation. Caused by Wired Open Supply Fan Louvers to AB Diesel, Changing Normal Ventilation Flow Path Configuration (← links)
- 05000315/LER-1983-006-03, /03L-0:on 830119,containment Gaseous Radiation Monitor Channel ERS-1305 Declared Inoperable Due to Fail High Condition.Caused by Failed Detector.Detector Replaced. Channel Calibr,Verified & Returned to Svc (← links)
- 05000315/LER-1983-005-03, /03L-0:on 830111,CD Diesel Engine Declared Inoperable Due to Fuel Oil Leak on Front Bank Fuel Injector Pump 3.Cause Not Stated.Galling on High Pressure Fitting Detected.Fuel Oil Pump & Fuel Injection Line Replaced (← links)
- 05000315/LER-1982-024-03, 1-HV-AES-1 of ESF Ventilation Sys Returned to Svc W/O Completing Testing Required by Tech Specs.Incident Repeated on 820419.Caused by Personnel Errors & Procedural Inadequacies (← links)
- 05000315/LER-1982-068-03, /03L-0:on 820817,4-kV Switchgear Room Cardox Sys Isolated W/No Names on Entry Board & No Personnel in Room. Caused by Personnel Error.Technician Had Erased Name But Failed to Return Carbon Dioxide Switch to Normal (← links)
- 05000315/LER-1982-067-03, /03L-0:on 820816,fire Door 373 Would Not Latch. Caused by Loose & Missing Screws.Screws Replaced/Tightened & Staked.Insp Procedure Changed to Require Staking of All Screws in Doors & Associated Hardware (← links)
- 05000315/LER-1982-066-03, /03L-0:on 820805,surface Cracks Discovered in Two Portions of Divider Barrier Seal.Cause Could Not Be Determined.Affected Portions of Seal Replaced W/Uniroyal H300.Matl Replaced in Areas Similar to Cracked Areas (← links)
- 05000315/LER-1982-065-03, /03L-0:on 820804,containment Area Monitor R-2 Trip Alarm Setpoint Set Above Tech Spec Limits to Free Fuel Assembly Caught on Containment Upender Cable.Caused by Conscious Decision to Violate Tech Specs (← links)
- 05000315/LER-1982-064-03, /03L-0:on 820803,fire Doors 460 & 462 of 4-kV Switchgear Room Found Open W/Doors Blocked by Air Hose. Caused by Personnel Error.Hose Removed.Training Conducted & Need to Comply W/Posted Requirements Emphasized (← links)
- 05000315/LER-1982-070-03, /03L-0:on 820810,during Surveillance Test, Discovered Relay Timer for RHR Pump 1E Would Not Reset Properly.Caused by Misaligned Switch Assembly & Plunger. Assembly & Plunger Realigned & Timer Reinstalled (← links)
- 05000315/LER-1982-069-03, /03L-0:on 820804,fire Seal W-7006 Found to Contain Less than Required Foam Sealant.Caused by Improperly Installed Seal.Repairs Made (← links)
- 05000315/LER-1982-063-03, /03L-0:on 820730,during Surveillance Test on Diesel Generator Load Shedding Relays,Six GE Model NGV-13b 4-kV Bus Degraded Voltage Relays Exceeded Tech Spec Tolerance.Caused by Instrument Drift.Relays Readjusted (← links)
- 05000315/LER-1982-062-03, /03L-0:on 820728,during Refueling,Fire Door 415, Connecting Control Rooms,Would Not Fully Close on Two Occasions.Caused by Increased Ventilation Flow,Due to Unit 2 Open Cable Vault Door.Closure Mechanism Adjusted (← links)
- 05000315/LER-1981-024-04, /04X-0:on 810716,meteorological 150-ft Wind Direction Instrumentation Declared Inoperable.Caused by Faulty Wind Direction Sensor,Model 50.2C Mfg by Geotech. Back Order Expedited (← links)
- 05000315/LER-1982-060-03, /03L-0:on 820723,while Shutdown for Refueling, Emergency Diesel Generator Rendered Inoperable When Motor Operated Valves on Cooling Water Supply Closed & Power Supply Removed.Caused by Supervisor Error (← links)
- 05000315/LER-1982-046-03, /03L-0:on 820604,during Monthly Surveillance Testing,Centrifugal Charging Pump 1E Produced Excessive Vibration,Although Flow Rates Met Acceptance Criteria.Cause Unknown.Pump Rotating Assembly Replaced (← links)
- 05000315/LER-1982-059-03, /03L-0:on 820720,two 4-kv Loss of Voltage Relays, 27-1-T11A & 27-2-T-11A Exceeded Tech Spec Tolerances.Caused by Instrument Drift.Diesel Generator Load Shedding Relays Readjusted to within Allowable Limits (← links)
- 05000315/LER-1982-056-03, /03L-0:on 820717,during Surveillance Test of Automatic Load Sequence Timing Relays,Three Relay Timers Exceeded Allowable Tolerance.Caused by Instrument Drift. Timers Adjusted.Use of New Solid State Relay Under Review (← links)
- 05000315/LER-1982-055-03, /03L-0:on 820708 & 09,fire Seals F-8195,W-3061 & W-3082 Discovered to Be in Degraded Condition.Fire Watches Posted.Cause Unknown.Penetration Fire Barrier Seals Restored to Functional Status (← links)
- 05000315/LER-1982-054-03, /03L-0:on 820709,during Operation of Diesel Generator Ab,Auto Voltage Regulator Was Not Functioning Properly & Exciter Field Overload Relay Tripped.Caused by Failed Auto Voltage Regulator Card.Relay Reset (← links)
- 05000315/LER-1982-052-03, /03L-0:on 820706,during Surveillance Test on Automatic Load Sequence Timing Relays,Four Timers Were Not Functioning Properly & Exceeded Max Tolerance.Caused by Relay Timer Not Being Repeatable.Timer Replaced (← links)
- 05000315/LER-1982-051-03, /03L-0:on 820709,during Surveillance Test of Diesel Generator Load Shedding Relays,Degraded Voltage Relay 27-3-T11C Actuated at Voltage in Excess of Tech Spec.Caused by Instrument Drift.Load Shedding Relay Readjusted (← links)
- 05000315/LER-1982-050-03, /03L-0:on 820707,containment Isolation Valve ECR-32 for Containment Air Participation Detector Failed to Close from Control Room Switch.Caused by Defective Solenoid Valve Mfg by Asco.Valve Repaired (← links)
- 05000315/LER-1982-049-03, /03L-0:on 820617,operator Discovered 4-kV Switch Gear Carbon Dioxide Sys Isolated W/O Personnel Listed on Entry Board.Caused by Frequent Entry & Exit of Personnel. Training Film Prepared (← links)
- 05000315/LER-1982-048-03, /03L-0:on 820623,component Cooling Water W/Heat Exchanger Essential Svc Water Discharge Valve Would Not Close Electrically.Caused by Shaft Binding in Stuffing Box Bore Below Packing Due to Corrosion (← links)
- 05000315/LER-1982-053-03, /03L-0:on 820702,ladder Found in Doorway of Fire Door Between AB & Cd 600-volt Bus Areas,Rendering Fire Barrier Inoperable.Investigation Did Not Reveal Person Responsible.Ladder Removed.Training to Be Increased (← links)
- 05000315/LER-1982-047-03, /03L-0:on 820622,discovered That Containment Equipment Hatch Double Resilient Seals on Ring Body Flange Had Not Been Type B Leak Tested Since June 1979.Caused by Testing Not Being Included in Existing Procedures (← links)
- 05000315/LER-1982-043-03, /03L-0:on 820523 & 24,1-WMO-702,W Essential Svc Water Discharge Valve,Failed to Operate During Surveillance Test.Caused by Buildup of Corrosion Products.Model PR20 150B (Drawing 5-6073) Replaced W/Pratt Valve (← links)
- 05000315/LER-1982-045-03, /03L-0:on 820528,security Officer Discovered Low Pressure Carbon Dioxide Sys for Auxiliary Cable Vault Isolated W/O Personnel on Duty.Caused by Personnel Error. Need for Full Compliance W/Fire Protection Emphasized (← links)
- 05000315/LER-1982-044-03, /03L-0:on 820526,security Personnel Discovered AB Emergency Diesel Generator Carbon Dioxide Sys Isolated,No Names on Entry Board & No Personnel in Room.Caused by Personnel Error.Administrative Action Taken (← links)
- 05000315/LER-1982-042-03, /03L-0:on 820524,during Operation,Containment Air Particulate Radiation Monitoring Sys (R-11) Found Operating Erratically.Caused by High Ac Ripple on Low Voltage Dc Power Sys.Low Voltage Dc Power Sys Replaced (← links)
- 05000315/LER-1982-041-03, /03L-0:on 820520,during Normal Startup,Feedwater Isolation Valve FMO-202 Failed While Being Utilized to Regulate Feedwater Flow.Caused by Heat Buildup Due to Frequent Cycling.Stem Nut & Motor Replaced (← links)
- 05000315/LER-1982-040-03, /03L-0:on 820521,operator Discovered Fire Door 367 to Nuclear Sampling Room Would Not Close Properly.Caused by 3 of 4 Screws Missing from Sequencer for Double Doors. Sequencer Securely Fastened to Frame (← links)
- 05000315/LER-1982-039-01, /01T-0:on 820601,during Monthly Insp of Eccs,Boron Injection Tank Isolation Valve Cycled W/Recirculation Valve Open.Caused by Personnel Error.Procedure Revised & Appropriate Administrative Action Taken (← links)
- 05000315/LER-1982-038-03, /03L-0:on 820514,during Routine Plant Tour,Fire Door W/No Latching or Closure Device Discovered.Caused by Personnel Error.Fire Watch re-established & Maintained Until Devices Installed & Door Declared Operable (← links)
- 05000315/LER-1982-036-03, /03L-0:on 820512,hydrogen Concentration Meter Improperly Indicating During Containment Hydrogen Monitoring Sys Calibr.Caused by Defective Meter.New Meter Ordered & to Be Installed on Receipt (← links)
- 05000315/LER-1976-045-03, Three Temporary Change Sheets Instituted on 760614 Not Approved Until 760629, Violating Tech Spec.Plant Procedure Modified,Assuring Change Sheet Submittal for Approval at Time of Initiation (← links)
- 05000315/LER-1982-037-03, /03L-0:on 820520,emergency Diesel Generator Room Cardox Sys Found Isolated W/No Names on Entry Board.Caused by Personnel Error.Incident Will Be Reviewed by Operations Dept Personnel to Emphasize Seriousness of Event (← links)
- 05000315/LER-1982-017-03, /03L-0:on 820320,during Normal Operation,Number 4 S/G Stop Valve Dump valves,MRV-241 & MRV-242 Removed from Svc to Repair Seat Leakage.Stem Disc,Seat Ring & Gaskets Replaced in Each Fisher Style 657 EAS Valve (← links)
- 05000315/LER-1982-033-03, /03L-0:on 820510,operator on Tour Discovered That Fire Door 226 Would Not Fully Close.Caused by Insufficient Closure Mechanism Against Flow of Thermostatically Controlled Ventilation Supply Fan.Addl Mechanism Added (← links)
- 05000315/LER-1982-032-03, /03L-0:on 820518,fire Hose Station 33 Near Emergency Diesel Generator Rooms Access Removed from Svc to Replace Leaking Drain Valve.Seat Leakage Caused by Normal Wear.Drain Valve Replaced (← links)
- 05000315/LER-1982-031-03, /03L-0:on 820510,operator on Tour Discovered That Fire Door 227 Would Not Latch.Caused by Slight Misalignment Between Latch & Latch Plate.Latch Plate Adjusted & Door Operated Satisfactorily (← links)
- 05000315/LER-1981-002, Forwards Updated LER 81-002/03X-1 & LERs 82-031/03L-0, 82-032/03L-0 & 82-033/03L-0 (← links)
- 05000315/LER-1982-035-03, /03L-0:on 820507 & 10,fire Detector 1-HV Acrf Charcoal Filter Instrumentation Declared Inoperable to Troubleshoot & Repair Automatic Reset Function on Fire Detection Actuation Sys.Caused by Defective Transistor (← links)
- 05000315/LER-1982-034-03, /03L-0:on 820508,operator Discovered Safety Stop Pin in Track of Pressurizer Heaters Transformer Room Overhead Door.Caused by Pin Not Being Removed Upon Exit by Unknown Personnel.Pin Immediately Removed (← links)
- 05000315/LER-1982-029-03, /03L-0:on 820503,during Surveillance Test,Low Pressure Alarm XPA-152 for Emergency Air Supply to NRV-152 Actuated at Less than 900 Psig.Caused by Faulty Calibr. Setpoint Increased (← links)
- 05000315/LER-1982-028-03, /03L-0:on 820429,during Power Ascension Loop,One Wide Range RCS Pressure indication,NPS-122,failed High. Replacement Read Low on 820523.Caused by Open Stain Gauge & Faulty Calibr,Respectively (← links)
- 05000315/LER-1982-030-04, /04L-0:on 820503,flow Indicator (SFR-201) for Turbine Gland Seal Leakoff Failed Low.Caused by Excessive Moisture on Sensing Element of Flow Indicating Probe. Moisture Removed & Probe Reinstalled (← links)
- 05000315/LER-1982-027-01, /01T-0:on 820511,during Design Change Review, Piping at Containment Air Sampling Penetrations Discovered Overstressed Due to Addition of Padlocks & Chains.Padlocks & Chains Replaced W/Lightweight Seals (← links)
- 05000315/LER-1978-003, Updated LER 78-003/03X-1:on 771227 Axial Power Distribution Monitoring Sys Not Restored to Operable Status to Perform Core Scan Per Tech Specs.Caused by Overlooking Tagged Incore Detectors.Procedure Modified (← links)
- 05000315/LER-1982-026-03, /03L-0:on 820419,fire Door 517 Found Blocked Open & Latch Taped to Prevent Latch from Working.Caused by Const Personnel Opening Door for Ventilation.Blockage & Tape Removed.Importance of Fire Foors Stressed (← links)
- 05000315/LER-1982-026, Forwards LER 82-026/03L-0 (← links)
- 05000315/LER-1982-023-03, /03L-0:on 820416,west motor-driven Auxiliary Feed Pump Removed from Svc to Repair Emergency Leakoff Line Check Valve FW-160.Check Valve Not Seated Tightly.Seat Lapped & Plug Conval Part 5F-316 Replaced.Mod Initiated (← links)
- 05000315/LER-1982-022-03, /03L-0:on 820413,fuseable Link & Automatic Closure Mechanism Discovered Broken on Fire Door 373.Exact Cause Undetermined.Some Type of Force Appeared to Have Been Applied to Door Causing Breakage (← links)
- 05000315/LER-1982-025-03, /03L-0:on 820416,containment Isolation Valve ECR-32 for Containment Air Particulate Detector Would Not Close During Sampling.Loose Bonnet Screws Caused Solenoid Vent to Become Blocked.Mounting Screws Tightened (← links)
- 05000315/LER-1982-019-03, /03L-0:on 820401,discovered Recorder 1-CS-001 Used for Containment Sump Flow Monitoring Had Not Been Indicating for Approx 12-h.Caused by Dirty Recorder Pan Heater Rheostat.Rheostat Cleaned (← links)
- 05000315/LER-1982-019, Forwards LER 82-019/03L-0 (← links)
- 05000315/LER-1982-018-03, /03L-0:on 820329,containment Hydrogen Sample Valves ECR-10,-11,-13,-21 & -23 Failed to Open.Caused by Two Open Solenoid Coils,Mfg by Asco,Model 103-834-2. Solenoids Replaced,Valves Timed & Returned to Svc (← links)
- 05000315/LER-1982-018, Forwards LER 82-018/03L-0 (← links)
- 05000315/LER-1982-021-03, /03L-0:on 820412,during Normal Operation,Control Room Emergency Ventilation Sys Air Flows Found to Be 7320 Cfm for 1-ACRF-1 & 7400 Cfm for 1-ACRF-2.Caused by Procedure Error During Filter Change in Aug 1981.Procedure Modifie (← links)
- 05000315/LER-1982-021, Forwards LER 82-021/03L-0 (← links)
- 05000315/LER-1982-020-99, /99L-0:on 820414,valve Z-RV-18,fire Protection Water to Spent Fuel Storage Pool Exhaust Unit 12-HV-AFX Charcoal Filter,Failed to Open.Caused by Malfunctioning Delay Circuit Capacitor.Capacitor Replaced (← links)
- 05000315/LER-1982-020, Forwards LER 82-020/99L-0 (← links)
- 05000315/LER-1982-015-03, /03L-0:on 820305,during Power Increase,Turbine Would Not Accept Addl Load at 46%.Turbine Runback Occurred. Caused by Problems in Initial Pressure Limiter Circuits. Circuitry Removed from Control Sys B (← links)
- 05000315/LER-1982-014-03, /03L-0:on 820305,during Reactor Trip Coincident W/Low Tavg,Feedwater Isolation Valve FMO-203 Failed to Close.Caused by Buildup of Corrosion Products within Limitorque Actuator Connection Box.Contacts Cleaned (← links)
- 05000315/LER-1982-013-03, /03L-0:on 820302,control Switch for Containment Pressure Equalization Fan in Stop & Backdraft Damper for Opposite Fan Was Open.Cause Could Not Be Determined.Startup Procedures Revised (← links)
- 05000315/LER-1982-012-03, /03L-0:on 820303,turbine Driven Auxiliary Feedwater Pump Trip/Throttle Valve Tripped Shut When Manually Started.No Problems Found.Surveillance Test Completed.Pump Returned to Svc.No Further Action Planned (← links)
- 05000315/LER-1982-011-03, /03L-0:on 820223,during Surveillance Per Tech Spec 4.8.2.5.2B,three Cells of N Train Battery Found to Have Electrolyte Gravity Less than 1.200 Min Limit.Caused by Low Readings & Loss of Acid.Acid Added & Battery Tested (← links)
- 05000315/LER-1982-010, Forwards LER 82-010/04T-0 (← links)
- 05000315/LER-1982-008-03, Containment Sump Flow Monitoring Recorder 1-CS-001 Found Out of Paper.New Roll Put in Recorder.Procedure Revised to Change Chart Paper When Less than 3-ft Remain (← links)
- 05000315/LER-1982-008, Forwards Updated LER 82-008/03X-1 (← links)
- 05000315/LER-1981-052, Forwards Updated LER 81-052/03X-1 (← links)
- 05000315/LER-1982-009-03, /03L-0:on 820128,leak Discovered in Essential Svc Water Pipe Downstream of Outlet Valve from East Heat Exchanger.Caused by Cavitation Due to Throttling of Butterfly Valve.Mod Initiated (← links)
- 05000315/LER-1982-009, Forwards LER 82-009/03L-0 (← links)
- 05000315/LER-1982-007-03, /03L-0:on 820126,containment Air Particulate & Gaseous Radiation Monitoring Sys R-11/R-12 Sample Pump Tripped on Low Flow.Caused by Filter Paper Winding Up Incorrectly on Takeup Reel.Filter Paper Replaced (← links)
- 05000315/LER-1982-007, Forwards LER 82-007/03L-0 (← links)
- 05000315/LER-1982-006-03, /03L-0:on 820123,during Surveillance Testing, Valve 1-WMO-737,emergency Svc Water Discharge from W Component Cooling Water Heat Exchanger Would Not Close. Cause Could Not Be Determined.Valve Cycled Manually (← links)
- 05000315/LER-1982-005-03, /03L-0:on 820115,during Surveillance Testing, Leakage Rate on Inner Door of Personnel Air Lock at 650 Ft Elevation Exceeded Tech Specs Limit.Caused by Broken Threaded Nipple Where Air Supply Line Enters Door Seal Area (← links)
- 05000315/LER-1982-002-99, /99T-1:on 820107,review of Documentation Associated W/Reactor Vessel Water Level Indication Sys Revealed That Physical Work Had Exceeded Limitations Stated in Approved Design Change Authorization (← links)
- 05000315/LER-1982-002, Forwards LER 82-002/99T-1 (← links)
- 05000315/LER-1982-004-03, /03L-0:on 820105,while Performing Surveillance Test,One Tape Was Found Inoperable.Caused by Failure to Advance Tape on 811204.Control & Instrumentation Personnel Have Received Addl Training (← links)
- 05000315/LER-1982-004, Forwards LER 82-004/03L-0 (← links)
- 05000315/LER-1981-065-03, /03L-0:on 811230,w/RCS in Mode 4 & Being Cooled Down,Low Flow Alarm for Containment Air Particulate & Gaseous Detectors Received.Cause Unknown.Pump Started Locally,W/Filter Paper Clean & Valve Lineup Correct (← links)
- 05000315/LER-1981-064-03, /03L-0:on 811229,during Normal Operation,Isolation Valve WCR-922 Failed to Meet Required Closing Time of 10-s. Caused by Tight Valve Packing.Valve Repacked.Packing Gland Nuts Loosened (← links)
- 05000315/LER-1982-001-99, /99T-0:on 820107,two Addl Fire Doors Identified Having Potential Problems as Followup to Dv Shaller Re Problem W/Ul Ratings of 16 Fire Doors.Design Change Initiated on 780329.Awaiting Addl Info from Contractor (← links)
- 05000315/LER-1981-063-03, /03L-0:on 811229,loop 3 T-average Indication Failed High & Delta-T Indication Failed Low.Caused by Failure of Resistance Temp Detector for Loop 3.Detector Replaced W/Spare (← links)
- 05000315/LER-1981-063, Forwards LER 81-063/03L-0 (← links)
- 05000315/LER-1981-062-03, /03L-0:on 811229,unidentified RCS Leakage Exceeded Tech Spec Limit.Caused by Packing Leak on Pressurizer Spray Control valve,NRV-164,due to Failure of Bellows Seal of Copes Vulcan Globe Valve.Valve Repacked & Tested (← links)
- 05000315/LER-1981-062, Forwards LER 81-062/03L-0 & Updated LERs 81-001/03X-1 & 81-039/03X-1 (← links)
- 05000315/LER-1981-061-03, /03L-0:on 811213,while Switching Heat Tracing from Train a to Train B for Boron Injection Flow Path,Supply Breaker for B Kept Tripping.Caused by Overcurrent Due to Loose Leads on Output Side,Causing Arcing.Leads Remade (← links)
- 05000315/LER-1981-061, Forwards LER 81-061/03L-0 (← links)
- 05000315/LER-1981-060-03, /03L-0:on 811210,two of Four RCS Hot Leg Temp & Two RCS Wide Range Pressure Indications Read Low.Caused by Low Current in Reactor Vessel Level Indication Sys. Instruments Disconnected.Amend to RFC Initiated (← links)
- 05000315/LER-1981-060, Forwards LER 81-060/03L-0 (← links)
- 05000315/LER-1981-059-03, /03L-0:on 811207,during Design Review,Rms Channel R-2 Containment Area Monitor Found Incapable of Performing Stated Tripping Functions in All Applicable Modes.Caused by Design Error.Design Change Is Being Processed (← links)
- 05000315/LER-1981-006, Forwards Updated LER 81-006/03X-1 & LER 81-059/03L-0 (← links)
- 05000315/LER-1981-058-04, /04T-0:on 811222,sample Room Continuous Air mon- Monitor Count Rate Increased Causing Stack Gaseous Monitor 1R-26 to Alarm.Caused by Valve Packing Leak at NRV-200. Valve Packing Tightened (← links)
- 05000315/LER-1981-058, Forwards LER 81-058/04T-0 (← links)
- 05000315/LER-1981-056-99, /99T-0:on 811208,possible Error in LOCA Analysis Found Which Could Have Permitted Less Conservative than Assumed Reactor Operation.Caused by Exxon Nuclear Co Failure to Perform Reanalysis of Small Break Loca.Explanation Encl (← links)
- 05000315/LER-1981-056, Forwards LER 81-056/99T-0 (← links)
- 05000315/LER-1981-057-03, /03L-0:on 811123,bypass Valves Found in Open Position During Normal Operation While Performing Check of Valve Lineup for 1R-11/12 Containment Radiation Monitor Sys. Cause Not Determined.Caution Tag Placed on Valves (← links)
- 05000315/LER-1981-057, Forwards LER 81-057/03L-0 (← links)
- 05000315/LER-1981-053-04, /04T-0:on 811204,alarm Received on Radiation Monitoring Sys Channel R-26,suggesting Small Gaseous Release in Progress.Apparently Caused by Leakage from Vol Control Tank Via Valve RS0-300.Valve Repaired (← links)
- 05000315/LER-1981-053, Forwards LER 81-053/04T-0 (← links)
- 05000315/LER-1981-051-03, /03L-0:on 811106,QA Personnel Observed That safety-related Fire Barrier Seals Were Penetrated by Electrical Conduit & That Requirements of Tech Spec 3.7.10 Were Not Met.Caused by Improper Installation of Conduit (← links)
- 05000315/LER-1981-051, Forwards LER 81-051/03L-0 (← links)
- 05000315/LER-1981-050-03, /03L-0:on 811021,peak Acceleration Recorder for Cd Diesel Generator Room Floor Found Removed from Concrete Pad. Probably Caused by Const Activity in Area.Metal Cage Installed Over Recorder (← links)
- 05000315/LER-1981-050, Forwards LER 81-050/03L-0 (← links)
- 05000315/LER-1981-044-03, During Verification of Seismic Class I safety-related Piping Sys Per IE Bulletin 79-14,discrepancies Noted.Cause Not Stated.Supports Added, Modified or Removed (← links)
- 05000315/LER-1981-044, Forwards Updated LER 81-044/03X-1.Schedules Proposed in IE Bulletin 79-14 Too Short to Allow Timely Response (← links)
- 05000315/LER-1981-049-03, /03L-0:on 810930,emergency Preparedness Voltage Failure Alarms for 69/4-kV Alternate Reserve Source Were Received in Control Rooms.Caused by Failed Jumper on One Phase of 69 Kv Probably Due to Lightning Strike (← links)
- 05000315/LER-1981-047-03, /03L-0:on 811001,discovered Seven Core Bores Had Been Performed in Unit 1 & safety-related Fire Zones, Providing Through Wall Penetrations.Caused by Procedural Deficiencies.Fire Watches Posted.Penetrations Sealed (← links)
- 05000315/LER-1981-048-03, /03L-0:on 810929,during Surveillance Testing,Rhr Motor Operated Containment Isolation Valve ICM-111 Failed to Open from Control Room.Caused by Bypass Limit Switch Contacts Opening Prior to Valve Being Completely Unseated (← links)
- 05000315/LER-1981-048, Forwards LER 81-048/03L-0 (← links)
- 05000315/LER-1981-046-03, /03L-0:on 810924,as Result of Maint Work at Containment Penetration,Cable for Acoustic Monitoring Sys, Safety Valve Position Indicator Was Disconnected.Caused by Use of Incorrect Electrical Print Revision for Repair Work (← links)
- 05000315/LER-1979-055, Forwards Updated LER 79-055/03X-1 & LER 81-046/03L-0 (← links)
- 05000315/LER-1981-043-03, /03L-0:on 810919,during Surveillance Test on Solid State Protection Sys,Logic Test Position Tested Unsatisfactorily.Caused by Failure of Westinghouse Universal Card A-210.Logic Card Replaced (← links)
- 05000315/LER-1981-045-03, /03L-0:on 810916,ITE Type K-600S 600-volt Train B Boric Acid Heat Trace Supply Breaker Tripped.Cause Not Yet Determined.Investigation Continuing (← links)
- 05000315/LER-1981-045, Forwards LER 81-045/03L-0 (← links)
- 05000315/LER-1981-042-04, /04L-0:on 810904,while Changing Steam Generator Blowdown from Normal to Startup Flash Tank,Blowdown Sampling Isolation Valves Found Closed for 95 Minutes.Caused by Oversight.Personnel Notified in Memo & Procedure Revised (← links)
- 05000315/LER-1981-040-03, /03L-0:on 810901,during Operability Test of West RHR Pump IMO-322,RHR Pump Recirculation Valve Would Not Close Electrically.Caused by Motor Being Cut Out by Torque Switch Due to Packing Drag.Torque Switch Setting Increased (← links)
- 05000315/LER-1981-019, Forwards LERs 81-040/03L-0,81-041/03L-0 & 81-042/04L-0 & Updated LER 81-019/03X-1 (← links)
- 05000315/LER-1981-038-03, /03L-0:on 810820,during Routine Insp of 1AB Emergency Diesel,Taper Pin Fuel Rack Assembly Was Loose & Upon Removal Discovered to Be Broken.Cause Unknown.Insp of Linkage Pins Has Been Added to 18-month Insp (← links)
- 05000315/LER-1981-038, Forwards LER 81-038/03L-0 (← links)
- 05000315/LER-1981-037-03, /03L-0:on 810814,during Normal Operation W/Channel 4 Power Range Instrumentation Drawer Withdrawn from Rack, Bistables for Overtemp & Overpower Delta T Were Tripped. Caused by Loose Connection in Isolation Amplifier (← links)
- 05000315/LER-1981-036-03, /03L-0:on 810811,during Surveillance Testing of AB Emergency Diesel Generator,Fuel Oil Supply in Day Tank Was Depleted,Causing Engine to Trip.Caused by Failure of Procedure 1-OHP 4030.STP.027 to List Sequence of Events (← links)
- 05000315/LER-1981-035-04, /04T-0:on 810826,operator Failed to Isolate Spent Resin Storage Tank When All Water Was Drained from Tank. Caused by Testing Capability of Adding Water to Tank Due to Difficulty Incurred on 810817.Tank Isolated (← links)
- 05000315/LER-1981-035, Forwards LER 81-035/04T-0 (← links)
- 05000315/LER-1981-028-03, /03L-0:on 810612,degraded Bus Voltage Relay 62-1-T11A Actuated Above Tech Spec Limit During Surveillance Test on Diesel Generator Load Shedding.Caused by Instrument Drift.Load Shedding Timer Readjusted (← links)
- 05000315/LER-1981-028, Forwards LER 81-028/03L-0 (← links)
- 05000315/LER-1981-023-03, /03L-0:on 810626,timer for Centrifugal Charging Pump 1 East Found to Have Exceeded Max Allowable Time During Surveillance Test on Automatic Load Sequence Timing Relays. Caused by Instrument Drift.Engineering Review in Progre (← links)
- 05000315/LER-1981-013-03, Source Range Ni Channels Declared Inoperable.Caused by Defective Source Range Detector N-32 Possibly Due to Dried Moisture Connectors. Detector Replaced (← links)
- 05000315/LER-1981-013, Forwards Revised LER 81-013/03X-1 & LER 81-023/03L-0 (← links)
- 05000316/LER-2020-004, Automatic Reactor Trip on Low-Low 24 Steam Generator Water Level (← links)
- 05000316/LER-2020-003, Manual Reactor Trip and Automatic Safety Injection Due to Failed Open Pressurizer Spray Valve (← links)
- 05000316/LER-2020-002, Plant Shutdown Required by Technical Specifications Due to Reactor Coolant System Leakage (← links)
- 05000316/LER-2020-001, Failure of Source Range Nuclear Instrumentation Resulting in a Condition Prohibited by Technical Specifications (← links)