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 Issue dateTitleTopic
ML18064A86314 August 1995LER 95-004-00:on 950714,determined That Redundant DG Circuits Not Separated Per App R Due to Insufficient App R Program Documentation.Hourly Fire Tour Established in EDG 1-1 Room & Review of LERs for App R CompletedSafe Shutdown
Fire Barrier
Past operability
Hourly Fire Watch
ML18100B29824 May 1994LER 94-014-00:on 940426,SG 1-2 Automatically Started When Two Indicating Light Sockets Shorted Together Due to Personnel Error.Description of Event & Lessons Learned Will Be Published in Operations Incident Summary.W/940524 Ltr
ML20024E4544 August 1983LER 83-017/03L-0:on 830706,power Supply Circuit Breaker for Oily Water Separator Effluent Flow Monitor (FR-251) Tripped Open & Would Not Reset.Cause Undetermined.Breaker Replaced. W/830804 Ltr
ML20052E17229 April 1982LER 82-005/03L-0:on 820330,during Surveillance Testing,Steam Generator Blowdown Tank Liquid Radiation Monitor RM-23 Failed Quarterly Functional Test.Caused by Failure of Photo Multiplier Tube
ML20052A38622 April 1982LER 82-003/03X-1:on 820212,prior to Fuel Load,Vital Instrument Ac Panel Undervoltage Alarm Received in Control Room.Inverter IY-11 & Panel PY-15 Tripped When Manually Switched Off.Cause Unknown
ML20052C29515 April 1982LER 81-001/01X-1:on 810922,during Review of Reportability of Inoperable Plant Vent Rod Monitoring Channels,Discovered Required STS Action Statements Had Not Been Entered.Caused by Personnel Error.Personnel Retrained
ML20042C40724 March 1982LER 82-002/03L-0:on 820222,air Sample Pumps for Plant Vent Radiation Monitors (RM 14A & B) Found Tripped.Caused by Clogging of Rad Monitor Filter Paper W/Debris from Const Activities
ML20042C35124 March 1982LER 82-004/03L-0:on 820223 & 26,oily Water Separator Effluent Line Flow Rate Measurement Device (FR-251) Inoperable.Caused by Faulty Electronic Component on First Occasion & by Breakdown of Oscillator on Second
ML20042A87016 March 1982Updated LER 81-002/01X-6:on 810927,error Discovered in Diagram Used to Locate Vertical Seismic Floor Response Spectra for Equipment & Sys Seismic Design.Caused by Erroneous Use of Unit 2 Diagram for Unit 1
ML20042A77615 March 1982LER 82-003/03L-0:on 820212,prior to Fuel Load,Operators Received Vital Instrument Ac Panel Under Voltage Alarm in Control Room.Caused by Tripped Feeder Breaker to PY-15. Event Under Investigation
ML20041E3911 March 1982LER 82-001/03L-0:on 820129,during Audit Prior to Fuel Load, Communication Phone Mounted on Front Section of Hot Shutdown Panel Was Discovered Excluded from Seismic Analysis.Caused by Coordination Failure.Panel Will Be Reanalyzed
ML20040D81925 January 1982Updated LER 81-002/01X-5:on 810927,prior to Fuel Loading, Engineer Discovered Error in Diagram Used to Locate Vertical Seismic Floor Response Spectra for Use in Plant Equipment & Sys Seismic Design.Unit 2 Diagram Used for Unit 1 Annulus
ML20040B47215 January 1982LER 81-010/03L-0:on 811217,prior to Fuel Load,Documentation for Gross Gamma Analysis of Weekly Composite Sample for Oily Water Separator Discovered Missing for 811029-1119.Sheets Apparently Misplaced.Procedure Revised
ML20040A51914 January 1982Updated LER 81-005/01X-1:on 811015,during Insp,Battery Cell Case Found Weeping.Further Insp Revealed 17 Cells W/Cracks Near Molded Support Ribs on Bottom of Cases.Caused by Inadequate Support of Cells.Racks Modified & Cells Replaced
ML20040A07211 January 1982LER 81-009/03L-0:on 811211,operator Failed to Perform Daily Channel Check on Iodine Sampler Flow Rate Monitor.Caused by Inadequate Instructions for Verifying Annunciator Window Operability.Procedure Change Issued
ML20039G94211 January 1982Updated LER 81-002/01X-4:on 810927,error Found in Diagram Used to Locate Vertical Seismic Floor Response (Vsfr) Spectra.Caused by Use of Unit 2 Diagram for Unit 1 Annulus Area
ML20039D36018 December 1981Updated LER 81-002/01X-3:on 810927,discovered Error in Diagram Used to Locate Vertical Seismic Floor Response Spectra Inplant Equipment & Sys Seismic Design.Caused by Using Incorrect Diagram.Sys Being Reviewed & Modified
ML20039C58617 December 1981LER 81-007/03L-0:on 811125,discovered That Tech Specs Surveillance Requirement 4.11.2.4.1 Re Project Doses Due to Gaseous Releases from Plant Not Performed within Required Time Interval.Caused by Personnel Oversight
ML20039C57917 December 1981LER 81-008/03L-0:on 811130,discovered That Gross Alpha Activity Analysis Had Not Been Performed within Required Time Interval.Caused by Personnel Oversight.Sample Counted on 811130
ML20038B9382 December 1981LER 81-006/03L-0:on 811103,daily Channel Check on Plant Vent Flow Recorder Not Performed.Caused by Operator & Reviewer Failure to Note Step on Checklist.Operators Instructed & Procedure Simplified