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 Start dateReporting criterionEvent description
05000285/LER-1950-285, Documents Deletion of Licensing Basis Commitment in LER 50-285/77-5 Re Failure of Reactor Protective Sys Trip Unit to Trip Prescribed Setpoint,Due to Improper Pretrip & Trip Indication Bulbs in Trip Unit Circuitry21 April 1994
05000285/LER-1976-005, Suppl 1 to LER 76-05/03L:on 770210,recirculation Actuation Pressure Switches Found Out of Tolerance.Cause Not Stated. Switch Will Be Calibr Monthly Until New Switches Installed10 February 1977
05000285/LER-1976-010, Suppl to LER 76-10/03L:on 760401,high Power Margin to Trip Meter B Drifted from 4.2% to 6% Power.Caused by Drift of Feed Back Limiter Module 19-317-2X.Module Calibr & Operated Satisfactorily8 April 1976
05000285/LER-1976-019, Suppl 1 to LER 76-19/03L:on 761001,five of 10 Valve Setpoints Drifted from Tech Spec Tolerance of Plus or Minus 1%.Caused by Change in Environ Condition.Valves Will Be Inspected During Refueling Outage14 October 1976
05000285/LER-1976-021, Suppl 1 to LER 76-21/03L:on 760802,timer Relays for SI-3A, AC-3B & SI-3B Failed to Time Out at Set Times.Caused by Binding Operating Mechanisms.Timers Tested Twice Weekly to Verify Operability Until Replacements Received9 August 1976
05000285/LER-1976-030, Summary of 760902 Telcon on LER 76-30/01L Re Steam Generator Blowdown Radiation Monitor Setpoints Out of Spec.Caused by Use of Unofficial & Incorrect Document as Part of 760804 Surveillance Test2 September 1976
05000285/LER-1976-032, Summary of 761004 Telephone Communication on LER 76-32/01L Re Reactor Coolant Observed Spraying from Weld Area on Seal Leakoff Line on Reactor Coolant Pump RC-3C.Leakage Isolated by Manual Isolation Valve4 October 1976
05000285/LER-1977-009, Advises That Util Modified Testing Frequency for Ac Sequencer Timing Relay,Per Commitment in LER 77-0914 January 1993
05000285/LER-1978-031, Forwards LER 78-031/03L-011 October 1978
05000285/LER-1978-032, Forwards LER 78-032/03L-031 October 1978
05000285/LER-1978-041, Forwards LER 78-041/03L-02 January 1979
05000285/LER-1978-046, Forwards LER 78-046/03L-024 January 1979
05000285/LER-1979-015, Forwards LER 79-015/01T-025 May 1979
05000285/LER-1979-017, Forwards LER 79-017/03L-017 August 1979
05000285/LER-1982-002, Forwards LER 82-002/03L-120 May 1982
05000285/LER-1982-003, Forwards LER 82-003/03L-117 June 1982
05000285/LER-1982-007, Forwards LER 82-007/03L-019 April 1982
05000285/LER-1982-010, Forwards LER 82-010/03L-028 May 1982
05000285/LER-1982-011, Forwards LER 82-011/01T-04 June 1982
05000285/LER-1982-012, Forwards LER 82-012/01T-02 June 1982
05000285/LER-1982-014, Forwards LER 82-014/03L-016 July 1982
05000285/LER-1982-015, Forwards LER 82-015/03L-022 July 1982
05000285/LER-1982-016, Forwards LER 82-016/03L-010 August 1982
05000285/LER-1982-017, Advises That Faulty Conax feed-through Assemblies, Identified in 821001 LER 82-017,replaced & Valve VA-81A Returned to Svc,Per NUREG-0737,Item II.F.1.6, Containment Hydrogen Monitors5 April 1983
05000285/LER-1982-018, Forwards LER 82-018/01T-020 September 1982
05000285/LER-1982-021, Forwards LER 82-021/03L-010 January 1983
05000285/LER-1983-001, Forwards LER 83-001/03L-018 February 1983
05000285/LER-1983-003, Forwards LER 83-003/01T-019 April 1983
05000285/LER-1984-020, Informs That LER 84-020 Re Containment Hydrogen Monitors VA-81A & VA-81B Requires 7-day Extension to Ensure Complete & Adequate Response.Rept Will Be Submitted by 84102215 October 1984
05000285/LER-1987-026, Discusses 871015 Enforcement Conference W/Nrc Re Violations Noted in Insp Rept 50-285/87-21.Violation Re Failure to Issue LER for Unlocked Door.Util Prepared & Submitted LER 87-026 Re Violation,Per 871015 Discussion4 November 1987
05000285/LER-1987-039, Advises That LER 87-039 Erroneously Designated as 87-038 in Cover Ltr.Subj LER Contained Correct LER Number5 January 1988
05000285/LER-1989-002, Forwards Corrected LER 89-002 & LER 89-00328 February 1989
05000285/LER-1989-003, Forwards LER 89-0032 February 1989
05000285/LER-1990-0071 August 1990
05000285/LER-1990-0103 July 1990
05000285/LER-1990-020, Forwards LER 90-020,Rev 1,updating Status of Corrective Actions & Including Other Minor Editorial Changes.Mod Request Initiated to Replace or Upgrade DG Voltage Regulator Due to Lack of Spare Parts Availability Not Required31 August 1993
05000285/LER-1990-022, Advises That Fire Barrier Penetration Seal Walkdowns Complete,Per 890202 & 900831 Commitments.Drawing & Procedure Change Program Ongoing & Will Be Addressed as Part of Actions to LER-90-02229 October 1990
05000285/LER-1991-003, Informs of Extension of Completion Date for Changing Abnormal Operating Procedures & Emergency Operating Procedures to Resolve Containment Penetration M-3 Potential Leak Path Issue,Per 910306 LER 91-00310 May 1991
05000285/LER-1991-007, Forwards Rev 1,providing Suppl Info Re Results of Corrective Actions Including Detailed Walkdown of Motor Control Ctrs & Resolution of twenty-one Coordination Problems Reported in LER 91-007,Rev 010 February 1993
05000285/LER-1991-008, Revises Completion Dates for Corrective Actions to Address LER 91-08 Re Inappropriate Surveillance Requirements for RPS Level I Bistables & LER 91-11 Re Pressurizer Pressure Low Signal Setpoints to 921120 & 1231,respectively8 July 1992
05000285/LER-1991-009, Corrected Ltr Forwarding LER 91-009-00.Memo Stationery Inadvertently Used Instead of Letterhead Stationery for Cover Ltr4 June 1991
05000285/LER-1991-011, Revises Completion Date for Corrective Actions to Address LER 91-11.Util Contracted w/ABB/C-E to Perform Uncertainty Analysis for Thermal Margin/Low Power Inputs & Associated Calculational Hardware.Efforts to Be Completed by 9323 December 1992
05000285/LER-1992-016, Revises Commitment to AEC Safety Guide 1 (Reg Guide 1.1), Contained in Section 6.2 of Updated Sar.Commitment Covers Method of Calculating Available Net Positive Suction Head for Containment Spray Sys Per LER 92-01618 September 1992
05000285/LER-1992-018, Updates Status of Corrective Actions in LER 92-018 Re Replacement of Carbon Steel Fasteners in Boric Acid Sys. Current Carbon Steel Fasteners Will Perform Satisfactorily Until Scheduled Replacement18 November 1993
05000285/LER-1992-026, Requests Extension Until 920306 to Complete Comprehensive Licensed Operator Medical Exam Procedure,Per LER 92-0267 February 1992
05000285/LER-1992-031, Updates Status of Corrective Action in LER 92-031,Rev 1,dtd 930226 Re Installation of Fire Pump Backpressure Control Valve.Schedule for Resolution of Item Revised from 930901 to 9401311 September 1993
05000285/LER-1993-020, Forwards LER 93-020-01.Rev Corrects & Clarifies Details Re Actions & Observations of Control Room Crew During Event16 February 1994
05000285/LER-1994-007, Submits Updated Status of LER 94-007 Corrective Actions13 March 1995
05000285/LER-1994-010, Updates Status of Corrective Action Described in LER 94-010, Rev 1,dtd 950331 Re Mod of CR Air Conditioners at Fcs. Advises That Second CR Air Conditioner Will Be Operational by 950427 Instead of 950415,as Originally Scheduled13 April 1995
05000285/LER-1995-003, Forwards LER 95-003 Re Manual Reactor Trips Due to Water Leakage Into RCP Lube Oil12 June 1995