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 Issue dateTitleTopic
ML20045G74230 June 1993Special Rept:On 930526,Channel 9 (SG A,Channel 2) & Channel 11 (SG C Channel 2) Declared Inoperable When Channels Failed Acceptance Criteria for Background Noise.Work Request Written to Repair Channels During Future Outage
ML20044C96310 May 1993Special Rept:On 930408,vibration & Loose Parts Monitoring Sys Channels 3 & 9 Declared Inoperable While Exhibiting Background Noise Lower than Previous Measurements.Work Requests Written to Repair Channel
ML20044C1398 March 1993Special Rept:On 930203,DG 2B Invalid Failures Occurred Due to Failure of Pneumatic Vibration Switch on Engine.Entire Pneumatic non-emergency Trip Sys in Process of Being Replaced W/Electrical Sys Per Nuclear Station Mod CN-20528
ML20044B8302 March 1993Special Rept:On 930131,discovered Invalid Failure of DG Due to High Crankcase Pressure Trip.Caused by Failure of Calcon Sensor.Failed Sensor Will Be Replaced During Refueling Outage
ML20024H23521 May 1991Special Rept:On 910422,diesel Generator 2A Failed to Reach Required 441 RPM within 11 Seconds Due to Mispositioned Fuel Oil Strainer.Operators to Be Trained on Incident & Strainers to Be Inspected More Frequently
ML20029A33012 February 1991Special Rept:On 910102,Unit 1 Loose Parts Monitor Channel 11 Declared Inoperable Due to Excessive Noise on Channel Which Was Causing False Alarms.Work Request Written to Repair Channel During Future Outage of Sufficient Length
ML20044A55220 June 1990Special Rept:On 900521 & 0612,invalid Failure of Diesel Generators 2A & 2B Occurred During Monthly Operability Performance Test.First Event Caused by Operator Error.Second Event Caused by Depressing Voltage Control Pushbutton
ML20043B17117 May 1990Special Rept:On 900418,diesel Generator 2B Failure Occurred During Operability Test & Output Breaker Tripped on Reverse Power.Caused by Operator Error.Reverse Power Relays Checked & Found to Be Operating Correctly.Operator Counseled
ML20042G8158 May 1990Special Rept:On 900411,valid Failure of Diesel Generator 2B Occurred.Caused by Fuel Pump 2L Sticking.Helm Joints Will Be Inspected for Freedom of Movement & Clearance & Possibility of Using More Efficient Filters Will Be Evaluated
ML20042F48430 April 1990Special Rept Re Moderator Temp Coefficient More Positive than Limits in Tech Spec 3.1.1.3,Figure 3.1-0.Temp Rod Withdrawal Limits Imposed Until Cycle Burnup Greater than Four EFPD or Boron Concentration Less than 1,363 Ppmb
ML19327B63625 October 1989Special Rept:On 890920,Unit 2 Diesel Generator 2A Declared Inoperable Due to Train a of Nuclear Svc Water Sys Being Taken Out of Svc.Diesel Generator a Tripped.Caused by Drifting of Temp Sensor.Sensor Replaced
ML19242D19921 June 1979Significant Deficiency 79-1:during Installation of Equipment on Section of Main Control Board,Deficient Skip Weld of Wire Duct Detected.Investigation Revealed 60 Improper Welds.All Welds Will Be Repaired by 790629