Semantic search
Jump to navigation
Jump to search
| Issue date | Title | Topic | |
|---|---|---|---|
| ML20044A920 | 10 July 1990 | LER 90-007-00:on 900611,feedwater Isolation & Auxiliary Feedwater Actuation Occurred & on 900612,four Bank B Rod Control Cluster Assemblies Dropped.Caused by Failed Input Buffer Card & Faulty Slave cycler,respectively.W/900710 Ltr | Missed surveillance |
| ML20043C018 | 30 May 1990 | LER 90-005-00:on 900501,reactor Trip,Auxiliary Feedwater Actuation & Feedwater Isolation Occurred Due to Turbine Trip on Loss of Main Generator Stator Cooling Water.Caused by Blown Fuse.Fuse Replaced & Logic changed.W/900530 Ltr | |
| ML20012B566 | 5 March 1990 | LER 90-002-00:on 900202,control Rod Urgent Failure Alarm Received During Monthly Surveillance on Movable Control Rod Assemblies.Caused by Defective Chip on Circuit Card.Card replaced.W/900305 Ltr | |
| ML20011E349 | 5 February 1990 | LER 90-001-00:on 900108,discovered That 24-month Tech Spec Required Local Leak Rate Test Surveillance for Containment Electrical Penetration Had Not Been Performed Since 870917. Caused by Personnel Error.Test performed.W/900205 Ltr | Time of Discovery |
| ML20005E468 | 29 December 1989 | LER 89-014-00:on 891209,two ESF Actuations Occurred.Caused by Spurious Signal on Fuel Bldg Radiation Monitor.Loose Terminal Block Connection on Radiation Monitor Skid Motor Controller Tightened & tested.W/891229 Ltr | |
| ML19332E866 | 6 December 1989 | LER 89-013-00:on 891109,ESF Containment Purge Isolation, Control Room Ventilation Isolation & Fuel Bldg Ventilation Isolation Actuation Occurred.Caused by Failed 15-volt Dc Power Supply.Thermography performed.W/891206 Ltr | |
| ML19332D199 | 20 November 1989 | LER 89-012-00:on 891019,determined That Leakage Past Liquid Radwaste Discharge Monitor Tank a Inlet Isolation Valve Invalidated Tech Spec Required Batch Sample Prior to Discharge.Caused by Corrosion.Valve replaced.W/891120 Ltr | |
| ML19325C457 | 3 October 1989 | LER 89-010-01:on 890905,ESF Containment Purge,Control Room Ventilation & Fuel Bldg Ventilation Isolation Actuations Received.Caused by Failure of 15-volt Dc Power Supply.Failed Power Supply Replaced & Event discussed.W/891003 Ltr |