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 Issue dateTitleTopic
ML20209J19612 July 1999Special Rept 99-001:on 990528,smoke Detectors Failed to Alarm During Performance of Routine Channel Functional Testing.Applicable TRM Interim Compensatory Measure of Establishing Roving Hourly Fire Patrol Was Implemented
ML20203B5584 December 1997Special Rept 97-003:on 971111,valid Failure of Div 2 EDG Occurred,Due to Jacket Water Leak.Failure Reported,Per Plant Technical Requirements Manual Section 7.7.2.2
ML20211P23116 October 1997Special Rept 97-02:on 970916,during Routine Monthly Surveillance Run,Jacket Water Leak Developed at Dresser Coupling Joint.Jacket Water Leak Repaired & EDG Sucessfully Retested & Returned to Operable Status
ML20217Q69626 August 1997Special Rept 97-001:on 970730,valid Failure of Div 1 EDG Occurred Due to Jacket Water Leak.Faulty Lube Oil Temp Switch Was Replaced & Jacket Water Leak Was Repaired
ML20134N06015 November 1996Special Rept 96-003:on 961016,smoke Detector in Zone 1-3 of Hot Machine Shop/Turbine Bldg Covered to Allow for Welding & Grinding in Area.Hourly Firewatch Established to Patrol & Inspect Affected Portion of Zone
ML20134L90611 November 1996Special Rept 96-002:on 961010,valid Failure of Div 2 EDG Occurred.Caused by Loose Barring Device Pivot Bolt.Bolt Tightened & Staked & Root Cause Evaluation Is Being Conducted
ML20101N0681 April 1996Special rept:96/001 on 960229,EDG Failed.Cause by Failed Shuttle Valve.C/A:Valve Replaced
ML20095K39621 December 1995Special Rept:On 951127,valid Failure of Div 1 EDG Occurred. Exact Sequence of Events Could Not Be Determined.Insps Done W/No Abnormalities Discovered
ML20095H25215 December 1995Special Rept:On 951117,invalid Failure of Div 13 HPCS EDG Occurred.Caused by Faulty Sync Check Relay in Paralleling Circuit.Sync Check Relay Repaired
ML20087F93311 August 1995Special Rept 95-003:on 950728,acccident Range Monitor Exceeds TRM Allowed Down Time.Interface Box Replaced,Calibr Restarted & Tested Satisfactory
ML20086E13930 June 1995RO 95-002:on 950605,invalid Failure of Division 13,HPCS EDG Occurred.Surveillance Procedures Used for ECCS Testing Will Be Evaluated to Provide Alternate Method for Initiating Trip Signals,Thereby Eliminating Need for Finger Relays
ML20081K17023 March 1995Special Rept:On 950307,wind Speed & Direction for Channels a & B Disabled.Caused by Lightning Striking Meteorological Monitoring Tower.Lco 95-0254 Written to Document Event
ML20078S34614 December 1994Special Rept:On 941117,EDG 12 Was Started for Maint Run Following Maint Outage & Run Was Successfully CompletedCoast down
ML20065S30011 May 1994Special Rept 94-004:on 940411,during Monthly Functional Test,Invalid Failure of EDG 13 Occurred Due to Personnel Error.Troubleshooting Run Performed & EDG Subsequently Tested Satisfactorily
ML20065L04413 April 1994Special Rept 94-003:on 940327,lightning Strike Occurred on Meteorological Monitoring Tower,Rendering Meteorological Monitoring Instrumentation Channels Inoperable for More than Seven Days.Available Sensors Replaced as of 940412
ML20064J05114 March 1994Special Rept on 940228,wind Direction Indicator Located at Meterological Facility Did Not Change in Response to Wind Changes.Wind Direction Sensor Replaced & Readings Verified W/B Indicator
ML20063H67314 February 1994Special Rept 94-001:on 940113,Div 2 Sdg 12 Experienced Invalid Failure During Surveillance Due to False High Jacket Water Temp Signal Generated by Faulty Jacket Water Temp Switch.Switch Replaced & Tested
ML20058D24823 November 1993Special Rept 93-005:on 931019,during Insp of Low Pressure Turbine Rotor C,Several Recordable Indications Identified. Caused by Stress Corrosion Cracking.Existing Condition Acceptable W/O Restriction for Continued Operations
ML20058C93916 November 1993Special Rept 93-006:on 931109,area Radiation Monitors Were Inoperable Due to Performance of Plant Surveillance Containment/Drywell High Range Area Radiation Monitor Calibr.Arm Returned to Operable Status
ML20059G7582 November 1993Special Rept:On 930926,TS Violation Occurred Due to SSW Pump House Strong Motion Accelerometer Recorder Calibration Failure.Ordered New Replacement Parts
ML20057B26213 September 1993Special Rept 93-003:on 930812,invalid Failure of EDG 12 Occurred Due to Leaking Jacket Water Coupling.Coupling Gaskets Replaced & Coupling Satisfactorily Checked for Leaks
ML20116L68513 November 1992Special Rept 92-008:on 921014,emergency Diesel Generator 11 Failed Due to Water in Cylinder.Caused by Crack in Cylinder Head.Head Replaced & EDG 11 RetestedNondestructive Examination
ML20116K78411 November 1992Special Rept 92-007:on 921013,EDG 11 Started But Start Signal Indicating Light Did Not Illuminate & Local Operator Unable to Verify EDG Acceleration.Possibly Caused by Blown Bulb.Edg 11 Functional Test Successfully Performed
ML20115E19315 October 1992Special Rept 92-006:on 920915,EDG 11 Tripped While Preparing to Perform Function Test of EDG 11 Per Surveillance Procedure 06-OP-1P75-M-0001.Caused by Leaking Reset Air Tubing Connection.Technicians Trained
ML20105C85915 September 1992Special Rept 92-005:on 920818,emergency Diesel Generator 11 Tripped Due to High Vibration Signal During Maint Run. Instructions Will Be Issued to Perform Simulated Diesel Run as post-maint Partial Check of Pneumatic Computer
ML20099A98623 July 1992Special Rept 92-004:on 920623,SDG 11 Tripped Due to High Vibration Signal.Caused by Loose Screw Due to Inadequate Procedure.Maint Procedure Governing Calibr of Vibration Sensors Will Be Revised
ML20101H72526 June 1992Special Rept 92-003-00:on 920525,Div 1 Standby DG 11 Experienced Nonvalid Failure.Caused by Excessive Contact Resistance.Comprehensive Loading Increased on One of Six Sets of Contacts in Svc & Selector Switch Bypassed
ML20098D16415 May 1992Special Rept 92-002:on 920505,containment & Drywell Accident Range Area Radiation Monitors Removed from Svc for More than 72 H.Preplanned Alternate Method of Monitoring Area Radiation Monitors Established to Work Area
ML20090A39127 February 1992Special Rept 92-001:on 920128,diesel Generator 11 Output Breaker Would Not Close During Monthly Functional Surveillance,Preventing Generator from Being Loaded to Grid. Power Converter Assembly for Tachometer Replaced
ML20082B6679 July 1991Special Rept 91-005:on 910618,invalid Failure of Emergency Diesel Generator 11 Occurred.Caused by Loose Terminal Connection in Paralleling Circuitry at Generator Breaker. Connection Tightened & Generator Tested Sastisfactorily
ML20079C33012 June 1991Special Rept:On 910513,emergency Diesel Generator II Failed During Monthly Standby Diesel Generator Functional Test. While Reaching Max Load,Oscillations Observed in Dc Field Volt,Dc Field Amps & Ac Amps
ML20072U56112 April 1991Special Rept 89-001-01:on 890201,output Breaker for DG 12 Failed to Close While Attempting to Parallel Generator W/ Energized Bus.Caused by Malfunction of Tachometer Transmitter.Upgraded Transmitters Installed
ML20070D34625 February 1991Special Rept 91-003:on 910127,smoke Detectors Found Covered W/Plastic Bags in Panel 1H13P733,rendering Detectors Inoperable.Plastic Bags Removed & Surveillance ResumedFire Watch
ML20065U43227 December 1990Special Rept 90-003-00:on 901127,diesel Generator Declared Inoperable During Performance of Monthly Functional Surveillance in Accordance W/Tech Spec 4.8.1.1.2.Monitoring of Diesel Generator Performed to Provide Corrective Actions
AECM-90-0138, Special Rept:On 900627,fire Detection Instrumentation Declared Inoperable & Firewatch Established as Required by Tech Spec 3.3.7.9.Detectors Restored to Svc31 July 1990Special Rept:On 900627,fire Detection Instrumentation Declared Inoperable & Firewatch Established as Required by Tech Spec 3.3.7.9.Detectors Restored to Svc
AECM-89-0168, Special Rept 89-007/0:on 890804,diesel Generator 13 Failed to Properly Load During Monthly Functional Surveillance. Caused by Failure of Motor Operator Potentiometer in Governor Control Circuit.Potentiometer Replaced31 August 1989Special Rept 89-007/0:on 890804,diesel Generator 13 Failed to Properly Load During Monthly Functional Surveillance. Caused by Failure of Motor Operator Potentiometer in Governor Control Circuit.Potentiometer Replaced
AECM-89-0127, Special Rept 89-006/0:on 890603,smoke Detector NSP65N627H in Fire Zone 2-04 of Auxiliary Bldg Continuously Alarmed & Failed to Reset.Caused by Steam Leakage in RWCU Sys Recirculation Pump B Room.Leakage Repaired29 June 1989Special Rept 89-006/0:on 890603,smoke Detector NSP65N627H in Fire Zone 2-04 of Auxiliary Bldg Continuously Alarmed & Failed to Reset.Caused by Steam Leakage in RWCU Sys Recirculation Pump B Room.Leakage Repaired
AECM-89-0118, Special Rept 89-005/0:on 890606,meteorological Monitoring Instrumentation Channels a & B Removed from Svc for Planned Maint Due to Environ Degrading of Equipment.Terminal Boxes & Cabling Replaced & Instrumentation Returned to Svc21 June 1989Special Rept 89-005/0:on 890606,meteorological Monitoring Instrumentation Channels a & B Removed from Svc for Planned Maint Due to Environ Degrading of Equipment.Terminal Boxes & Cabling Replaced & Instrumentation Returned to Svc
AECM-89-0104, Special Rept 88-007/1:on 881214,field Amps,Line Amps & Generator MVARs Began Oscillating During Diesel Generator 11 Surveillance.Caused by Number 1 Rectifier Bridge Circuit. Diesel Generator Restarted,Loaded & Surveillance Completed31 May 1989Special Rept 88-007/1:on 881214,field Amps,Line Amps & Generator MVARs Began Oscillating During Diesel Generator 11 Surveillance.Caused by Number 1 Rectifier Bridge Circuit. Diesel Generator Restarted,Loaded & Surveillance Completed
AECM-89-104, Special Rept 88-007/1:on 881214,field Amps,Line Amps & Generator MVARs Began Oscillating During Diesel Generator 11 Surveillance.Caused by Number 1 Rectifier Bridge Circuit. Diesel Generator Restarted,Loaded & Surveillance Completed31 May 1989Special Rept 88-007/1:on 881214,field Amps,Line Amps & Generator MVARs Began Oscillating During Diesel Generator 11 Surveillance.Caused by Number 1 Rectifier Bridge Circuit. Diesel Generator Restarted,Loaded & Surveillance Completed
AECM-89-0091, Special Rept 89-004/0:on 890405,smoke Detector in Fire Zone 1-03 of Control Bldg Spuriously Alarmed.Smoke Detector Alarm Declared Inoperable.Cause Not Determined.Detector Cleaned, Retested & Returned to Svc on 8904285 May 1989Special Rept 89-004/0:on 890405,smoke Detector in Fire Zone 1-03 of Control Bldg Spuriously Alarmed.Smoke Detector Alarm Declared Inoperable.Cause Not Determined.Detector Cleaned, Retested & Returned to Svc on 890428Hourly Fire Watch
AECM-89-0089, Special Rept 89-003/0:on 890404,fluctuations in Exciter Volts & Amps Observed in Diesel Generator During Monthly Surveillance.Caused by High Resistance Across Set of Normally Closed Contacts on Relay Resulting from Oxidation4 May 1989Special Rept 89-003/0:on 890404,fluctuations in Exciter Volts & Amps Observed in Diesel Generator During Monthly Surveillance.Caused by High Resistance Across Set of Normally Closed Contacts on Relay Resulting from Oxidation
AECM-89-0056, Special Rept 89-002:on 890225,turbine Bldg Ventilation Exhaust Accident Range Radiation Monitor Removed from Svc. Channels 3 & 4 Failed & Channel 4 Remained in Check Source. Monitor Retested Satisfactorily & Restored to Svc on 8903029 March 1989Special Rept 89-002:on 890225,turbine Bldg Ventilation Exhaust Accident Range Radiation Monitor Removed from Svc. Channels 3 & 4 Failed & Channel 4 Remained in Check Source. Monitor Retested Satisfactorily & Restored to Svc on 890302
AECM-89-0048, Special Rept:On 890201,diesel Generator Failed to Load During Test.Caused by Malfunction of Tachometer Transmitter. Transmitter Replaced & Diesel Generator Functional Test Successfully Completed2 March 1989Special Rept:On 890201,diesel Generator Failed to Load During Test.Caused by Malfunction of Tachometer Transmitter. Transmitter Replaced & Diesel Generator Functional Test Successfully Completed
AECM-88-0205, Followup Ro:Re Incident Involving Stuck Peripheral Orifice Fuel Assembly During Second Refueling Outage.Stuck Bundle Successfully Removed W/O Complications.No Plans Exist to Reuse Formerly Stuck Assembly15 November 1988Followup Ro:Re Incident Involving Stuck Peripheral Orifice Fuel Assembly During Second Refueling Outage.Stuck Bundle Successfully Removed W/O Complications.No Plans Exist to Reuse Formerly Stuck AssemblyEnforcement Discretion
ML20205P3444 November 1988Special Rept 88-004:on 881021,containment Ventilation Exhaust Accident Range Radiation Monitor Removed from Svc. Erratic Readings Observed During Surveillance.Caused by Damaged Cable Assembly.Channel 2 Tube Replaced
AECM-88-0217, Corrected Special Rept 88-006:on 881021,inoperability of Accident Range Radiation Monitor Discovered.Caused by Damaged Cable Assembly.Cable Assembly Replaced4 November 1988Corrected Special Rept 88-006:on 881021,inoperability of Accident Range Radiation Monitor Discovered.Caused by Damaged Cable Assembly.Cable Assembly Replaced
AECM-88-217, Special Rept 88-004:on 881021,containment Ventilation Exhaust Accident Range Radiation Monitor Removed from Svc. Erratic Readings Observed During Surveillance.Caused by Damaged Cable Assembly.Channel 2 Tube Replaced4 November 1988Special Rept 88-004:on 881021,containment Ventilation Exhaust Accident Range Radiation Monitor Removed from Svc. Erratic Readings Observed During Surveillance.Caused by Damaged Cable Assembly.Channel 2 Tube Replaced
AECM-88-0181, Special Rept 88-005/0:on 880829,post-accident Monitoring Instrument for Standby Gas Treatment B Subsystem Exhaust Declared Inoperable & Left Inoperable for More than 72 H. Caused by Time Spent to Procure Replacement Part12 September 1988Special Rept 88-005/0:on 880829,post-accident Monitoring Instrument for Standby Gas Treatment B Subsystem Exhaust Declared Inoperable & Left Inoperable for More than 72 H. Caused by Time Spent to Procure Replacement PartGrab sample
AECM-88-0156, Final Special Rept on Events Re Interaction of Activities Associated W/Units 2 & 1,including Control of Chlorine Stored in Unit 2 Controlled Area & Leakage of Const Water Sys in Control Bldg9 August 1988Final Special Rept on Events Re Interaction of Activities Associated W/Units 2 & 1,including Control of Chlorine Stored in Unit 2 Controlled Area & Leakage of Const Water Sys in Control BldgNew Resident Inspector
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