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ML20199K83321 November 1997Ro:On 960528,detected Abnormal Metallic Impact Sounds.Caused by Confirmed Loose Part in Sg.Removed SG 4 Hot Leg Manway & Found Loose Metal Object Inside,Performed Engineering Evaluation & Performed Insp of Guide Tube Support Pins
ML20148F09029 May 1997Special Rept:On 970513,CR Personnel Began Receiving Intermittent Alarms from Digital Metal Impact Monitoring Sys Annunciator.Monitoring of Impact Continuing & Search for Object & Insp for Damage Will Be Performed at Next Outage
ML20128P21510 October 1996Special Rept 2-96-2:on 960921,start Attempt of Maint Run of DG2A Was Made But Engine Did Not Start.Caused by Loose Voltage Regulator Integrated Circuit Boards.Loose Boards Were Removed,Contacts Adjusted & Returned to Sockets
ML20129F8731 October 1996Special Rept 2-96-1:on 960908,DG 2A Started But Tripped. Investigation Found Six Main Bearing Temp Sensor Venting Pressure.Defective Main Bearing Sensor Replaced
ML20112H00710 June 1996Ro:On 960528,detected Abnormal Metallic Impact Sounds. Caused by Confirmed Loose Part in Steam Generator. Engineering Evaluation Performed & Repairs & Modifications Scheduled for Next Refueling Outage
ML20101N0492 April 1996Special Rept 1-96-2:on 960310 & 23,non-valid DG Failures Occurred.Rocker Arm Clearances Adjusted & DGs Restarted & Operated Successfully
ML20092B6287 September 1995Special Rept:On 950816,non-valid DG Failure Occurred Due to Circuits Not Properly set.Post-maint Surveillance Testing Discovered Problem Prior to DG Return to Svc
ML20087D6217 August 1995Special Rept:On 950720,total of 33 3/4 Gallons of Grease Had Been Lost from Tendon.Horizontal Tendon H120 Was Detensioned & Strand Was Removed for Visual Exam & Tensile Testing
ML20086S26426 July 1995Special Rept:On 950628,generator Output Voltage Dropped Below Normal Rated Value.Caused by Malfunctioning Transformer T3.Voltage Regulator 2 Replaced,Tested & Returned to Svc on 950629
ML20086L94814 July 1995Special Rept:On 950517,operators Experienced Difficulties W/Excitation of Generator in Form of Voltage Swings When Utilizing Each of Two Voltage Regulators
ML20086B89229 June 1995Special Rept 2-95-3:on 950607,three non-valid DG2A Failures Occurred Due to Malfunctioning Automatic Min Excitation Limiter.Malfunctioning Automatic Min Excitation Limiter Removed from Service
ML20086H13116 June 1995Special Rept:On 950517,operators Experienced Difficulties W/Excitation of Generator in Form of Voltage Swings When Utilizing Each of Two Voltage Regulators
ML20084M7172 June 1995Special Rept:On 950517,operators Experienced Difficulties W/Excitation of Generator in Form of Voltage Swings When Utilizing Each of Two Voltage Regulators.Caused by Oxidation of Potentiometer Contact Surface.Surface Wiped Clear
ML20082F0284 March 1995Special Rept 2-95-1 Re Invalid DG Failures.Test Frequency for DGs Remains at Once,Per 31 Days,W/Requirements of TS Table 4.8-1
ML20149G12223 September 1994Special Rept 1-94-2:on 940918,discovered That Seismic Monitor Inoperable for More than 30 Days.Seismic Switch Removed & Seismic Trigger Installed on 940918 & Seismic Monitor Returned to Svc
ML20065J58711 April 1994Special Rept 1-94-1:on 940202,pressurizer Pressure Transmitter Swung on Mounting Bolt & Touched Handle of Isolation Valve for Sensing Line,Causing Valve to Open Momentarily.Valve Was Closed & Unit Stabilized
ML20059B83225 October 1993Special Rept 2-93-3:on 931001,DG 2B Invalid Failure Occurred When DG Failed to Attain Rated Voltage & Frequency in Required Time & on 931002,DG 2A Invalid Failure Occurred When DG Tripped on Overspeed
ML20057F54811 October 1993Special Rept:On 930917,invalid Failure of DG 2A Occurred. Investigation of Leak Revealed Blown Gasket.Gasket Replaced & Engine Restarted
ELV-03986, Special Rept:On 920819,discovered That Voltage Meter Did Not Respond Until 28 After Being Tapped Several Times. Caused by Erratic Meter Indications.Operators Advised of Proper Timing Method & Voltage Meter Replaced28 August 1992Special Rept:On 920819,discovered That Voltage Meter Did Not Respond Until 28 After Being Tapped Several Times. Caused by Erratic Meter Indications.Operators Advised of Proper Timing Method & Voltage Meter Replaced
ELV-03929, Special Rept 2-92-5:on 920709-12,temp in Room 122 of Equipment Bldg Exceeded Max Normal Temp of 115 F for More than 8 H.Periods of Plant Operation W/Higher than Normal Temps Had No Effect on Continued Operability of Equipment31 July 1992Special Rept 2-92-5:on 920709-12,temp in Room 122 of Equipment Bldg Exceeded Max Normal Temp of 115 F for More than 8 H.Periods of Plant Operation W/Higher than Normal Temps Had No Effect on Continued Operability of Equipment
ELV-03825, Rev 1 to Special Rept 2-92-1,reclassifying 920205 DG Failure from Valid to Nonvalid.Area Exists within Kvar Range in Which Voltage Regulator Will Not Function Due to Power Transformers.Operation of Generator in Range Limited25 June 1992Rev 1 to Special Rept 2-92-1,reclassifying 920205 DG Failure from Valid to Nonvalid.Area Exists within Kvar Range in Which Voltage Regulator Will Not Function Due to Power Transformers.Operation of Generator in Range Limited
ELV-03601, Rev 1 to Special Rept 2-91-1:on 910521,mechanical Governor Oil Level Appeared Low After Dropping to Bottom of Sight Glass Due to Small Span of Governor Oil Level Sight Glass. Change Made to DG Standby Status Mode Checklist11 May 1992Rev 1 to Special Rept 2-91-1:on 910521,mechanical Governor Oil Level Appeared Low After Dropping to Bottom of Sight Glass Due to Small Span of Governor Oil Level Sight Glass. Change Made to DG Standby Status Mode Checklist
ELV-03687, Special Rept:On 920331,K1 Relay to Latch in Closed Position & Short Generator Field.Caused by Spring Load Collar Not Fully Returning to Normal Position.Appropriate Procedures Will Be Changed by 920615 to Ensure Collar Is Checked27 April 1992Special Rept:On 920331,K1 Relay to Latch in Closed Position & Short Generator Field.Caused by Spring Load Collar Not Fully Returning to Normal Position.Appropriate Procedures Will Be Changed by 920615 to Ensure Collar Is Checked
ELV-03632, Special Rept 2-92-2:on 920317,dust & Debris Observed Settling in Vicinity of Generator End of Diesel.Caused by Large Piece of Fireproofing Insulation Falling Into Lead Termination Box.Power Termination Box Repaired9 April 1992Special Rept 2-92-2:on 920317,dust & Debris Observed Settling in Vicinity of Generator End of Diesel.Caused by Large Piece of Fireproofing Insulation Falling Into Lead Termination Box.Power Termination Box Repaired
ELV-03627, Special Rept:On 920320 & 21,invalid Failures of DG 2A Occurred Due to Inadequate Fuel in Supply Lines & Governor Speed Increased Too Slowly.On 920322,DG High Vibration Trip Occurred Due to Defective Sensor.Sensor Replaced9 April 1992Special Rept:On 920320 & 21,invalid Failures of DG 2A Occurred Due to Inadequate Fuel in Supply Lines & Governor Speed Increased Too Slowly.On 920322,DG High Vibration Trip Occurred Due to Defective Sensor.Sensor Replaced
ELV-03602, Special Rept:On 920219,revealed That Microchip Failed on Circuit Card Resulting in Channels in Upper Reactor Vessel Being Declared Inoperable.Installation Will Be Completed & Inoperable Channels Will Be Restored to Svc by 92041526 March 1992Special Rept:On 920219,revealed That Microchip Failed on Circuit Card Resulting in Channels in Upper Reactor Vessel Being Declared Inoperable.Installation Will Be Completed & Inoperable Channels Will Be Restored to Svc by 920415
ELV-03478, Special Rept 2-92-1:on 920205,DG 2B Declared Inoperable Due to Negative Reactive Power.Cause Undetermined.Engine Being Tested Each Wk While Monitoring Equipment Connected to Capture Any Info Useful in Investigation of Cause2 March 1992Special Rept 2-92-1:on 920205,DG 2B Declared Inoperable Due to Negative Reactive Power.Cause Undetermined.Engine Being Tested Each Wk While Monitoring Equipment Connected to Capture Any Info Useful in Investigation of Cause
ELV-03217, TS Special Rept 1-91-6:on 911019 & 20,maint Start of Diesel Generator 1A Made for Functional Testing Purposes.Caused by Engine Speed Dropping Too Low & Low Turbocharger Lube Oil Pressure.Exhaust Gasket for Cylinder Head Replaced12 November 1991TS Special Rept 1-91-6:on 911019 & 20,maint Start of Diesel Generator 1A Made for Functional Testing Purposes.Caused by Engine Speed Dropping Too Low & Low Turbocharger Lube Oil Pressure.Exhaust Gasket for Cylinder Head Replaced
ELV-03200, Special Rept 1-91-5:on 911008,discovered That Amount of Grease Injected Into Vertical Tendon V10-102 Significantly Larger than Amount of Grease Removed from Tendon.Caused by Voids in Tendons.Tendon Retensioned7 November 1991Special Rept 1-91-5:on 911008,discovered That Amount of Grease Injected Into Vertical Tendon V10-102 Significantly Larger than Amount of Grease Removed from Tendon.Caused by Voids in Tendons.Tendon Retensioned
ELV-03184, Special Rept 1-91-4:on 911001,DG 1B Was Shut Down Due to Oil Leak from Supply Line to Rocker Arms.Caused by Connection Not Being Sufficiently Retightened.Tap Setting Change Made for Unit 1 a Rat.Wiring Discrepancy for 140 Relay Corrected30 October 1991Special Rept 1-91-4:on 911001,DG 1B Was Shut Down Due to Oil Leak from Supply Line to Rocker Arms.Caused by Connection Not Being Sufficiently Retightened.Tap Setting Change Made for Unit 1 a Rat.Wiring Discrepancy for 140 Relay Corrected
ELV-03155, Special Rept 50-425/1991-003:on 910912,vent Valve on Grease Can for Horizontal Tendon H-96 at Butress 2 Found Broken Off & Grease Leaked from 15 Locations on Exterior Surface. No Degradation Occurred in Tendons or Containment8 October 1991Special Rept 50-425/1991-003:on 910912,vent Valve on Grease Can for Horizontal Tendon H-96 at Butress 2 Found Broken Off & Grease Leaked from 15 Locations on Exterior Surface. No Degradation Occurred in Tendons or Containment
ELV-03109, Special Rept:On 910821,valid Diesel Generator Failure of DG 2B Occurred,Troubleshooting Revealed K-1 Exciter Shutdown Relay Was Latched in Shutdown Position W/Reset.Caused by Component Failure20 September 1991Special Rept:On 910821,valid Diesel Generator Failure of DG 2B Occurred,Troubleshooting Revealed K-1 Exciter Shutdown Relay Was Latched in Shutdown Position W/Reset.Caused by Component Failure
ELV-03009, Special Rept:On 910708,invalid Diesel Generator Failure Occurred During Maint Run to Verify Balance of Silicon Control Rectifier Firing Waveforms.Provisions Implemented to Require Review Determining Need for Isolation Transformers31 July 1991Special Rept:On 910708,invalid Diesel Generator Failure Occurred During Maint Run to Verify Balance of Silicon Control Rectifier Firing Waveforms.Provisions Implemented to Require Review Determining Need for Isolation Transformers
ELV-02901, Special Rept 1-91-2:on 910522,operator at Diesel Generator Panel Observed Fluctuation in Field Voltage.On 910524,when Diesel Generator Tied to Grid,Field Voltage & Amps Spiked. Caused by Failure of Voltage Regulator.Regulator Replaced17 June 1991Special Rept 1-91-2:on 910522,operator at Diesel Generator Panel Observed Fluctuation in Field Voltage.On 910524,when Diesel Generator Tied to Grid,Field Voltage & Amps Spiked. Caused by Failure of Voltage Regulator.Regulator ReplacedTemporary Modification
ELV-02900, Special Rept 2-91-1:on 910521,operator Noticed Mechanical Governor Oil Level Low When Level Dropped to Bottom of Sight Glass.Caused by Small Span of Governor Oil Level Sight Glass.Governor Drain Connection Tightened17 June 1991Special Rept 2-91-1:on 910521,operator Noticed Mechanical Governor Oil Level Low When Level Dropped to Bottom of Sight Glass.Caused by Small Span of Governor Oil Level Sight Glass.Governor Drain Connection Tightened
ELV-02753, Special Rept Re Listed Invalid Diesel Generator Failures. Causes & Corrective Actions Listed4 June 1991Special Rept Re Listed Invalid Diesel Generator Failures. Causes & Corrective Actions Listed
ELV-02255, Special Rept 1-90-7 Re Invalid Diesel Generator Failure on 901025.Caused by Operator Using Improper Timing Method to Time Event.Diesel Generator 1B Restarted Using Proper Timing Method & Required Frequency Range Reached within Time Limit15 November 1990Special Rept 1-90-7 Re Invalid Diesel Generator Failure on 901025.Caused by Operator Using Improper Timing Method to Time Event.Diesel Generator 1B Restarted Using Proper Timing Method & Required Frequency Range Reached within Time Limit
ELV-02215, Special Rept 2-90-04:on 901009,invalid Diesel Generator Failure Occurred8 November 1990Special Rept 2-90-04:on 901009,invalid Diesel Generator Failure Occurred
ELV-02165, Special Rept 2-90-03:on 900914,invalid Diesel Generator Failure Occurred Due to Crack in Fuel Line Tubing.New Tubing Installed & Bent Appropriately15 October 1990Special Rept 2-90-03:on 900914,invalid Diesel Generator Failure Occurred Due to Crack in Fuel Line Tubing.New Tubing Installed & Bent Appropriately
ELV-02112, RO 1-90-06:on 900829,valid Diesel Generator (DG) Failure Occurred.Investigation Begun & Troubleshooting DG Run Made24 September 1990RO 1-90-06:on 900829,valid Diesel Generator (DG) Failure Occurred.Investigation Begun & Troubleshooting DG Run Made
ELV-01995, Special Rept 1-90-05:on 900711,valid Diesel Generator Failures Occurred.Caused by Initial Mfg Process.Starting Air Valves on Each of Four Diesel Generators Tested & Polished to Provide Adequate Clearance Between Pistons & Caps7 August 1990Special Rept 1-90-05:on 900711,valid Diesel Generator Failures Occurred.Caused by Initial Mfg Process.Starting Air Valves on Each of Four Diesel Generators Tested & Polished to Provide Adequate Clearance Between Pistons & Caps
ELV-00929, Special Rept:On 890902,area Max Normal Temp Limit Exceeded for More than 8 H.Caused by Erroneous Reading Taken by Plant Equipment Operator.Temp Excursion Had No Adverse Effect on Qualified Life of safety-related Equipment in Room3 October 1989Special Rept:On 890902,area Max Normal Temp Limit Exceeded for More than 8 H.Caused by Erroneous Reading Taken by Plant Equipment Operator.Temp Excursion Had No Adverse Effect on Qualified Life of safety-related Equipment in Room
ELV-00909, Revised Special Rept Re Valid Diesel Generator Failure on 890719.Caused by Remote Gate Firing Module on Bridge Circuit 1.Rework on Module Completed & Circuit Returned to Svc25 September 1989Revised Special Rept Re Valid Diesel Generator Failure on 890719.Caused by Remote Gate Firing Module on Bridge Circuit 1.Rework on Module Completed & Circuit Returned to Svc
ELV-00790, Special Rept 1-89-02:on 890717,observed Valid Diesel Generator Failure.Caused by Remote Gate Firing Module on Bridge Circuit 1.Rework in Progress & Scheduled for Completion by 89081414 August 1989Special Rept 1-89-02:on 890717,observed Valid Diesel Generator Failure.Caused by Remote Gate Firing Module on Bridge Circuit 1.Rework in Progress & Scheduled for Completion by 890814
ELV-00562, Special Rept 89-002:on 890318,while Performing Procedure Re Unit Heatup to Normal Operating Temp & Pressure,Handswitches Opened & Safety Injection Occurred.Approx 2,900 Gallons of Water Injected Into Rcs.Safety Injection Signal Reset30 May 1989Special Rept 89-002:on 890318,while Performing Procedure Re Unit Heatup to Normal Operating Temp & Pressure,Handswitches Opened & Safety Injection Occurred.Approx 2,900 Gallons of Water Injected Into Rcs.Safety Injection Signal Reset
ELV-00431, Special Rept 89-001 Re Positive Moderator Temp Coefficient Measured During Low Power Physics Testing.Calculations Performed to Determine Control Rod Withdrawal Limits & Duration of Effect Time6 April 1989Special Rept 89-001 Re Positive Moderator Temp Coefficient Measured During Low Power Physics Testing.Calculations Performed to Determine Control Rod Withdrawal Limits & Duration of Effect Time
ELV-00028, Special Rept 88-008:on 881026,diesel Generator Train B Did Not Reach Rated Voltage & Frquency within Required Time,Per Reg Guide 1.108,Section C.2.E.2.Caused by Lack of Fuel in Line Upon Diesel Start Due to Personnel Error23 November 1988Special Rept 88-008:on 881026,diesel Generator Train B Did Not Reach Rated Voltage & Frquency within Required Time,Per Reg Guide 1.108,Section C.2.E.2.Caused by Lack of Fuel in Line Upon Diesel Start Due to Personnel Error
ML20206E82314 November 1988Special Rept:On 881013,during Troubleshooting of Diesel Generator Train A,Mvar Meter Was Reading Offscale High. Investigation Showed That Rewiring Led to Meter Malfunction. Wiring Corrected
ML20206B5637 November 1988Special Rept 88-007:on 881022,following Inservice Insp, Completed on 881022,one Tube in Steam Generator 1 Plugged
ML20205G67224 October 1988Special Rept 88-005:on 880923,high Lube Oil Temp Trip Occurred When Start 1-88-0076,diesel Generator Train B Being Run to Prove Operability Following Routine Maint.Diesel Restarted to Verify High Lube Oil Temp
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