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This page provides a simple browsing interface for finding entities described by a property and a named value. Other available search interfaces include the page property search, and the ask query builder.
List of results
- 05000304/LER-1985-022-01, :on 851015,fuel Handling Accident Radiation Monitor Exceeded High Alarm Setpoint of 300 Mrem/H Due to High Exposure Rate from Upper Internals,Resulting in Closure of Containment Purge Valves.Procedure Revised.W/Undated Ltr +
- 05000304/LER-1985-029-01, :on 851201,containment Purge Inlet & Outlet Isolation Valves & Air Exhaust Stack Radiation High Annunciator Alarmed.Caused by Spurious Spike on Monitor 2RT-PR09C.Value of Capacitor Changed +
- 05000368/LER-1985-028, :on 851025,procedure for Safety Injection Tanks Identified as Allowing cross-connecting of Safety Injection Tanks Via Nonseismic Piping of Nitrogen Addition Sys for Tanks.Caused by Personnel Error +
- 05000000/LER-1985-083, Partially Withheld LER 85-083-00:on 851213 & 16,determined That Certain Vital Barrier Penetrations Did Not Contain Required Personnel Restraint Features.Caused by Personnel Error.Efforts of Security Task Force Reprioritized +
- 05000382/LER-1985-057, Forwards LER 85-057-00.Event Analysis & Reporting Group Established to Improve Plant Safety & Reliability & Ensure That Causes of Significant Events Identified & Corrected,As of Sept 1986 +
- 05000416/LER-1985-008, :on 850213,instrument Air Compressor Tripped Due to Low Cooling Water Pressure While Air Vented from Turbine Bldg Cooling Water Sys.Caused by Loss of Feedwater. Main Turbine Manually Tripped & MSIVs Closed +
- 05000338/LER-1985-003-01, :on 850319,review of Facility Main Dam & Hydro Structures Revealed Previous Studies Failed to Identify Units 3 & 4 Const Area as Potential Flood Path to Units 1 & 2 Turbine Bldg.Concrete Wall Constructed +
- 05000366/LER-1985-017, :on 850430 & 0501,molded Case Circuit Breakers Discovered W/Trip Setpoints &/Or Breaker Locations Contrary to Tech Spec Table 3.8.2.6-1.Caused by Inadequate Instructions for Implementing Design Change +
- 05000312/LER-1985-027, :on 851214,licensee Discovered That Testing Requirements for Containment Personnel Air Lock Seals Not in Accordance W/Tech Spec 4.4.1.2.5.(c).Caused by Technicians Not Adhering to Procedures.Retest Conducted on 851216 +
- 05000312/LER-1985-026, :on 850910,diesel Generators a & B Declared Inoperable.Diesel Generator B Failed to Start.Diesel Generator a Removed from Svc for Troubleshooting.Diesel Generator B Capable of Performing Intended Function +
- 05000312/LER-1985-028, :on 851030,control Room Operator Noticed That Auxiliary Pump P-319 Started Automatically.Exact Starting Time Could Not Be Confirmed.Caused by Low Main Feedwater Discharge Pressure +
- 05000282/LER-1985-013, :on 850915,one Feedwater Containment Isolation Valve to Steam Generator 1B Failed to Open During Startup. Caused by Overheating of Motor Operator to Valve.Motor Valve Program implemented.W/880107 1tr +
- 05000259/LER-1985-031-01, :on 850706-09,seismically Unqualified Flanged Joints Discovered as Result of Engineering Reviews.Caused by Failure of Design Organization to Properly Specify Range Types & Matl During Original Plant Const +
- 05000528/LER-1985-005, :on 850122,containment Purge Isolation & Fuel Bldg Essential Filtration Actuation Signals Actuated Simultaneously.Caused by Spurious Equipment Failure Alarm on Associated Radiation Monitoring Units +
- 05000295/LER-1985-023, :on 850603,steam Generator Steam Flow Channel II Read High & Temporary Procedure Change Made to Troubleshoot Loop.Temporary Change Paperwork Misplaced. Caused by Inadequate Tracking sys.W/861209 +
- 05000362/LER-1985-036, :on 851223,determined That Shutdown Cooling Sys HX Isolation Valves 3HV-8150 & 3HV-8151 Not Fully Closed Per Tech Specs.Caused by Premature Actuation of Valve Motor Operator Position Indication Limit Switches +
- 05000302/LER-1985-034, :on 850809,RCS Pressure Raised Above 750 Psig W/O Meeting Required Operability Surveillances Per Tech Spec 3.5.1.a.Caused by Inadequate Procedure.Procedure Revised.W/ +
- 05000362/LER-1985-026, :on 851016,containment Purge Isolation Sys Train a Monitor 3RE-7804 Isolated Due to Closure of Sample Isolation Valves.Caused by Deenergization of Power Supply to Esfas.Covers Installed on Circuit Breakers +
- 05000219/LER-1985-005-02, :on 850210,during Routine Surveillance Testing, Isolation Condenser Pipe Break Sensors IB05A1,IB05B1,IB11A1, IB11B1 & IB11B2 Tripped at Values Greater than Tech Specs. Caused by Instrument Drift.Sensors Reset +
- 05000272/LER-1985-007, :on 850708,waste Gas Decay Tank 14 Depressurized Through Plant Vent.Caused by Seat Leakage Through Valve 1WG41 & Improper Testing of Solenoid Valves. Leak Test Procedure Revised +
- 05000324/LER-1985-014, :on 851231 & 860101,discovered That Automatic Depressurization Sys a & B Logic Timing Relay K5A Out of Timing.Cause Undetermined.Relays Replaced +
- 05000312/LER-1985-001, :on 850124,operations Personnel Found Hydrogen Monitor Sys Containment Isolation Valves Open.Caused by Tagging Inconsistency.Cover Panels added.Post-accident Sampling Sys Operation Procedure Revised +
- 05000275/LER-1985-042, :on 851113,time Limit of Tech Spec 4.3.3.9.1 Exceeded.On 851024,Surveillance Test Procedure I-77A Performed on Unit 2 Flow Rate Measurement Device Instead of Unit 1 Device.Caused by Personnel Error +
- 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 +
- 05000327/LER-1985-019-01, :on 850524,inadequate Seismic Piping Supports Discovered.Caused by Personnel Errors.Drawing Discrepancies Re Both Pipes Corrected & Sk Series of Prints Superseded by 47W Series of Prints +
- 05000323/LER-1985-026, :on 850507 & 860210,Mode 6 Entered W/O Performing Required Surveillance Test & Discovered That Test Line Not Included in Procedures,Respectively.Caused by Inadequate Procedure Review +
- 05000304/LER-1985-028-01, LER Number 85-028 Used to Rept Loss of RHR Cooling Flow.Ltr Should Be Disregarded +
- 05000388/LER-1985-018, :on 850529,circuit Breaker 8B in Reactor Protection Sys Distribution Panel 2Y201B Tripped.Caused by Loose Load Side Connection Leading to Overheating of Terminal Lug.Breaker Replaced +
- 05000280/LER-1985-022, :on 851121, Auxiliary Vent Sys Safety Mode Initiated Alarm Received.Caused by Momentary Decrease of Instrument Air Pressure from Ice Formation.Bypass Valve Adjusted +
- 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 +
- 05000259/LER-1985-051-01, :on 850925,cable Connecting Reactor Protection Sys Panel 9-17 Supply Breaker to Terminal Block Dried & Insulation Cracked.Caused by Loose Breaker Connection. Defective Cable Replaced W/Larger Gauge Cables +
- 05000338/LER-1985-029, :on 851228,during Performance of RCS Leak Rate Test,Leak of 1.28 Gpm Noted.Caused by Reactor Vessel Seal Ring Leaks Chemical & Vol Control Sys Pipe Crack.Seal Rings & Pipe Replaced +
- 05000321/LER-1985-048, LERs 85-048,85-049 & 85-051 Have Been Canceled +
- 05000338/LER-1985-020, Forwards Proprietary & Nonproprietary Westinghouse WCAP-11310, North Anna Unit 1 Steam Generator Tube Integrity Rept, Per 851216 LER 85-020-00 Commitment.W/O Repts +
- 05000382/LER-1985-045, :on 851014 & 16,automatic Actuation of ESF Portion of Control Room Ventilation Sys Occurred.Caused by Electrical Spike & Coincident Normal Release,Respectively. Guide Issued Re Spurious Alarms +
- 05000311/LER-1985-022, :on 851007,reactor Trip & Safety Injection Initiated by Spurious Actuation of Bistables & Contacts Resulting from Voltage Spike on Vital Instrument Bus 2C. Caused by Technical Miswiring Receptacle +
- 05000324/LER-1985-011-02, :on 851015,reactor Scrammed Following Closure of MSIV B21-FO22A.Caused by Dc Solenoid of three-way Valve Failing at Prior Indeterminate Time.Asco Valve Replaced +
- 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 +
- 05000263/LER-1985-017, :on 851007,spurious Trip of Chlorine Monitor Occurred.Caused by Cassette Running Out of Tape Due to Insufficient Length Supplied by Mfg.On 851031,tape Broke Due to Defect.Mfg Notified +
- 05000352/LER-1985-075, :on 850923,review of Aug Monthly Surveillance Test Indicated That Fire Door 599 Not Tested to Verify Operability of Alarm Function on 850825.Caused by Omission of Door from Testing.Door Successfully Tested +
- 05000458/LER-1985-010, :on 850930,explosive Valve Failed to Fire When Train a of Standby Liquid Control Sys Initiated.Caused by Incorrectly Wired Terminations in Termination Panel. Terminations Corrected +
- 05000287/LER-1985-001-02, :on 850723,unit Tripped on High RCS Pressure During Secondary Feedwater Transient.Caused by Erroneous Signal from Failed Integrated Control Sys Module.Failed Module Replaced +
- 05000313/LER-1985-009-01, :on 841127,mechanical Shock Suppressor Failed During Inservice Insp Surveillance Functional Testing.Caused by Prolonged Exposure to Vibration & Heat.Failed or Degraded Snubbers Repaired or Replaced +
- 05000295/LER-1985-035, Special Rept Re Failure to Notify NRC of Quarterly Release of Radioactive Matl in Excess of 2.5 Ci Per Unit on 840513. Failure to Submit Rept Documented in LER 85-035-00 & Insp Repts +
- 05000325/LER-1985-054, :on 851006,common Control Bldg Emergency Air Filtration Sys Train a Automatically Started Due to Fire Alarm.Caused by Grindings Activities During Ongoing Plant Mod.Train Secured & Returned to Standby +
- 05000213/LER-1985-001, :on 850114,body-to-bonnet Steam Leak Found on Containment Isolation Valve MS-TV-1212.Caused by Foreign Matl Under Valve Seats.Inservice Test Schedule Revised from Cold Shutdown to Every 3 Months +
- 05000304/LER-1985-019-02, :on 850911,while Venting Unit 1 Containment to Atmosphere,High Particulate Alarm Occurred.Discharge Mistakenly Sampled from Unit 2.Caused by Personnel Error. Personnel Involved Counseled +
- 05000312/LER-1985-009, :on 850530,diesel Generator B Failed to Follow Normal Shutdown Sequence When Stop Button on Safety Features Control Panel Pressed.Caused by 4,160-volt Safety Bus Undervoltage Condition.Time Delay Relay Added +
- 05000370/LER-1985-014-02, :on 850517,reactor Critical W/Bank C Control Rods Below Min Tech Spec Insertion Limits.Caused by Incorrect Coefficients in Xenon Predict Computer Program. Control Rods Reinserted.Procedures Modified +
- 05000369/LER-1985-019-01, :on 850530,cable Transits Penetrating Units 1 & 2 Reactor Bldg Walls Discovered to Be Fire Barriers.Caused by Oversight During Development of Fire Barrier Insp Procedure.Procedures Revised +