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| Issue date | Title | Topic | |
|---|---|---|---|
| ML20027D950 | 5 November 1982 | LER 82-097/03L-0:on 821008,HPCS Pump Declared Inoperable Based on Engineering Review of 821002 Incorrect Valve Lineup.Caused by Insufficient Retesting Following Valve Position Indicator Mod & Failure to Remove Info Tag | |
| ML20028A850 | 22 November 1982 | LER 82-115/03L-0:on 821022,fire Door OC219 from Control Bldg to West Stairwell Corridor Would Not Properly Close.Caused by Retractor Arm Not Allowing Door to Fully Close.Door Reworked | Fire Watch |
| ML20028C204 | 31 December 1982 | LER 82-156/03L-0:on 821204,while Performing Surveillance Test,Div II Diesel Failed to Start.Caused by Overload Trip on Dc Fuel Oil Pump.Overload Reset | |
| ML20028C242 | 31 December 1982 | LER 82-154/03L-0:on 821204,shutdown Cooling Loop a of RHR Secured for Standby Svc Water Loop a Hydrostatic Test.Caused by Need to Perform Hydrostatic Test.Reactor Water Cleanup Used as Alternate DHR Method | Hydrostatic |
| ML20028D121 | 7 January 1983 | LER 82-160/03L-0:on 821208,smoke Detectors N603A & B in Zone 2-18 Covered to Prevent Actuation While Welding in Progress.Caused by Planned Maint Activity.Fire Watch Established.Detectors Returned to Svc | Fire Watch Hourly Fire Watch |
| ML20028D165 | 7 January 1983 | LER 82-166/99X-0:on 821202,fire Barriers Broken in Control Bldg Computer Room,Control Room & Upper Cable Spreading Room in Order to Route Cables.Caused by Planned Maint Activity.Fire Watch Established | Fire Barrier Fire Watch Hourly Fire Watch |
| ML20028D220 | 11 January 1983 | LER 82-170/03L-0:on 821213,smoke Detectors in Zone Covering Auxiliary Bldg Hallway on 119-ft Elevation Found Covered in Order to Prevent Possible Damage from Welding in Area. Welding Completed & Detectors Returned to Svc | Hourly Fire Watch |
| ML20028D266 | 11 January 1983 | LER 82-165/03L-0:on 821213,Divs I & II Diesels Declared Inoperable Due to Discovery of Unqualified Cable in Diesel Generator Control Circuitry.Caused by Vendor Notification That Cables Failed IEEE Flame Test.Controls Deemed Adequate | Fire Barrier |
| ML20028D326 | 7 January 1983 | LER 82-163/03L-0:on 821211,during Routine Power Supply Switching Operation,Both Shutdown Cooling Loops Isolated. Caused by Momentary Loss of Power to Rps.Shutdown Cooling Restored | |
| ML20028D998 | 13 January 1983 | LER 82-171/03L-0:on 821217,smoke Detector N604G in Zone 2-19 Covered to Prevent Actuation During Maint Welding Activities.Hourly Fire Watch Established | Hourly Fire Watch |
| ML20028E010 | 13 January 1983 | LER 82-173/03L-0:on 821215,QA Audit Revealed Violations of Tech Spec Requiring Temps of Certain Areas to Be Monitored Every 12 H.Caused by Personnel Unfamiliarity W/Procedure. Actions Taken Subsequent to Events Correct | |
| ML20028E019 | 14 January 1983 | LER 82-136/99L-0:on 821215,QA Audit Revealed That on 820927, Temp in Div 1 Switchgear Room Exceeded Tech Specs.Caused by Personnel Performing Inadequate Review of Daily Logs. Personnel Instructed to Review Logs for Tech Spec Violation | |
| ML20028E022 | 13 January 1983 | LER 82-167/03L-0:on 821216,fire Rated Door 1A204 Blocked Open for Passage of Hose Used in Local Leak Rate Test.Caused by Planned Testing Activity.Fire Watch Established.Hose Removed on 821217 | Fire Watch |
| ML20028E031 | 13 January 1983 | LER 82-168/03L-0:on 821217,fire Rated Door in Upper Cable Room of Control Bldg Blocked Open to Allow Passage of Hose Used for Penetration Sealing.Caused by Planned Maint Activity.Fire Watch Established | Continuous fire watch Fire Watch |
| ML20028E032 | 13 January 1983 | LER 82-161/03L-0:on 821216,doors to Reactor Protection Sys Equipment Rooms Blocked Open to Cool Rooms.Caused by Lack of Cooling in Rooms Due to Chilled Water & Plant Svc Water Sys Being Down.Water Sys Returned to Svc | Hourly Fire Watch |
| ML20028E118 | 13 January 1983 | LER 82-169/99X-0:on 821209,fire Rated Door OC501 Blocked Open to Allow Access of Personnel.Caused by Broken Door Handle.Door Repaired by 821228 | Fire Watch |
| ML20028E121 | 13 January 1983 | LER 82-172/99X-0:on 821210,penetration AE154C in Auxiliary Bldg Opened to Pull Cables Through.Limiting Conditions for Operation Initiated & Hourly Fire Watch Established. Resealing of Penetration Assembly in Progress | Hourly Fire Watch |
| ML20028G603 | 11 February 1983 | LER 83-019/03L-0:on 830112 & 20,one Smoke Detector in Zone 1-15 & Eight Detectors in Zone 2-18 Covered During Planned Maint Functions to Prevent False Alarms or Damage to Unit. Detectors Uncovered After Maint Completed | |
| ML20028G693 | 9 February 1983 | Updated LER 82-044/03X-1:on 820813,while Venting Nuclear Boiler Instruments,Several ECCS Initiations Occurred.Caused by Procedural Inadequacy.Plant Procedure 07-S-13-23 Written & Approved | |
| ML20029A333 | 13 February 1991 | LER 91-001-00:on 910114,Tech Spec Limiting Condition of Operation Action Was Not Satisfied After DG Removed from Standby Svc to Perform Preventive Maint.Caused by Personnel Error.Procedure Changed to Prevent recurrence.W/910213 Ltr | Missed surveillance |
| ML20029D037 | 26 April 1994 | LER 94-004-00:on 940324,found Five Slow Rods While Scram Time Testing Was Being Performed.Caused by Contamination of Internal Scram Solenoid Pilot Valve Head Assemblies. Corrective Action:Install New Head assemblies.W/940426 Ltr | |
| ML20042F225 | 4 May 1990 | LER 90-005-00:on 900406,discovered That Current Surveillance Practices for Stroke Testing Fresh Air Makeup Intake Valves Could Have Resulted in Unfiltered Pathway.Administrative Controls Placed on valves.W/900504 Ltr | Stroke time |
| ML20043C674 | 1 June 1990 | LER 90-006-00:on 900502,review of Effluent Sample Analysis Revealed That Turbine Bldg Ventilation Exhaust Had Not Been Analyzed Exceeding Time Limit.Caused by Personnel Error. Training & Counseling conducted.W/900601 Ltr | |
| ML20043H295 | 15 June 1990 | LER 90-007-00:on 900516,discovered That Actions Taken for Inoperable Reactor Water Level Transmitter Not Adequate to Comply W/Requirements for Tech Spec 3.3.2.Caused by Personnel Error.Meetings Held w/personnel.W/900615 Ltr | |
| ML20044A688 | 25 June 1990 | LER 90-009-00:on 900526,nonlicensed Personnel Performed Step Out of Sequence During Breaker rack-out & Caused LPCS Pump Breaker to Close.Operator Involved Counseled on Failure to Adhere to Breaker Operation procedure.W/900625 Ltr | |
| ML20045A015 | 28 May 1993 | LER 92-011-02:on 920608,determined That Design Inadequacies Could Result in Exceeding 10CFR100 Limits.Caused by Failure of Original Design to Specify leak-tight Const for Fan Housing.Shaft Seal Design installed.W/930528 Ltr | |
| ML20045C526 | 16 June 1993 | LER 93-004-00:on 930517,inboard Containment Isolation Valve Which Supplies Steam to RCIC Sys Automatically Isolated Due to Topaz Inverter Failure.Calibr Instructions & PM Program Will Be reviewed.W/930616 Ltr | |
| ML20045E960 | 30 June 1993 | LER 92-017-02:on 920804,reactor Scrammed Due to Low Primary Water Tank Level Signal.Implemented Minor Change Package Which Will Install DC to DC Converter Between 24 Volt DC Power Supply & Pw Tank Level transmitters.W/930630 Ltr | Temporary Modification |
| ML20045G791 | 8 July 1993 | LER 93-005-00:on 930608,indicated That Response Time Test for RCIC Low Steam Pressure Isolation Instrumentation Invalid.Caused by Inappropriate Test Method.Procedures Governing Method of Testing Will Be revised.W/930708 Ltr | Time of Discovery |
| ML20046C399 | 6 August 1993 | LER 92-009-01:on 920509,observed That Some of Fuel Rod Compression Springs Compressed More than Expected for Assembly Exposure Achieved.Max Envelope Size of Lower Tie Plate Will Be reduced.W/930806 Ltr |