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| Issue date | Title | Topic | |
|---|---|---|---|
| PY-CEI-NRR-2393, Special Rept Update:On 990327 Refueling Outage 7 Began & Troubleshooting Efforts Began.Troubleshooting of Affected Calbe Confirmed Fault in Drywell Section of Cable.Determined That Installation of Newer Technology Should Be Explored | 12 May 1999 | Special Rept Update:On 990327 Refueling Outage 7 Began & Troubleshooting Efforts Began.Troubleshooting of Affected Calbe Confirmed Fault in Drywell Section of Cable.Determined That Installation of Newer Technology Should Be Explored | Post Accident Monitoring |
| PY-CEI-NRR-2369, Special Rept:On 990127,PAMI Was Declared Inoperable.Caused by Low Resistance Reading Existing in Circuit That Goes to Drywell.Troubleshooting of Affected Cable Will Commence During RFO on 990227 | 3 March 1999 | Special Rept:On 990127,PAMI Was Declared Inoperable.Caused by Low Resistance Reading Existing in Circuit That Goes to Drywell.Troubleshooting of Affected Cable Will Commence During RFO on 990227 | Post Accident Monitoring |
| PY-CEI-NRR-2208, Special Rept Re Inoperable Post Accident Monitoring Instrumentation.Efforts in Progress to Restore Instrumentation as Soon as Possible,But No Later than End of Upcoming Refueling Outage Scheduled to Begin 970912 | 26 August 1997 | Special Rept Re Inoperable Post Accident Monitoring Instrumentation.Efforts in Progress to Restore Instrumentation as Soon as Possible,But No Later than End of Upcoming Refueling Outage Scheduled to Begin 970912 | Post Accident Monitoring |
| PY-CEI-NRR-2090, Special Rept:On 960814,channel of Post Accident Monitoring Instrumentation Was Inoperable 24 H More than OOS Time Allowed by Ts.Instrumentation Has Been Repaired & Operable | 26 August 1996 | Special Rept:On 960814,channel of Post Accident Monitoring Instrumentation Was Inoperable 24 H More than OOS Time Allowed by Ts.Instrumentation Has Been Repaired & Operable | Post Accident Monitoring |
| PY-CEI-NRR-2056, Special Rept:On 960421,channel of Vibration & Loose Parts Monitoring Sys Declared Inoperable,Due to Abnormally Low Background Level Being Detected.Cause for Low Output Signal Cannot Be Determined | 31 May 1996 | Special Rept:On 960421,channel of Vibration & Loose Parts Monitoring Sys Declared Inoperable,Due to Abnormally Low Background Level Being Detected.Cause for Low Output Signal Cannot Be Determined | |
| PY-CEI-NRR-2019, Special Rept:On 951228,six Channels of Vibration & Loose Parts Monitoring Sys Declared Inoperable Because 18 Month Channel Calibr Surveillance Frequency Had Passed.Performs Daily Channel Checks & Monthly Channel Functioning Testing | 5 February 1996 | Special Rept:On 951228,six Channels of Vibration & Loose Parts Monitoring Sys Declared Inoperable Because 18 Month Channel Calibr Surveillance Frequency Had Passed.Performs Daily Channel Checks & Monthly Channel Functioning Testing | |
| PY-CEI-NRR-1946, Special Rept:On 950405,Unit Vent Gas Post Accident Radiation Monitoring Channel Was Declared Inoperable Based on Results of Testing Conducted in Accordance W/Surveillance Instruction SVI-D19-T5353 | 19 April 1995 | Special Rept:On 950405,Unit Vent Gas Post Accident Radiation Monitoring Channel Was Declared Inoperable Based on Results of Testing Conducted in Accordance W/Surveillance Instruction SVI-D19-T5353 | |
| PY-CEI-NRR-1923, Special Rept:On 950303,vibration & Loose Parts Monitoring (V&Lpm) Sys Channels 1 & 4 Inoperable for More than 30 Days. V&Lpm Channels 1 & 4 Declared Inoperable on 950201 Subsequent to Troubleshooting Activities | 13 March 1995 | Special Rept:On 950303,vibration & Loose Parts Monitoring (V&Lpm) Sys Channels 1 & 4 Inoperable for More than 30 Days. V&Lpm Channels 1 & 4 Declared Inoperable on 950201 Subsequent to Troubleshooting Activities | |
| PY-CEI-NRR-1857, Special Rept:On 940825,offgas Ventilation Exhaust Post Accident RM Declared Inoperable & Exceeded 72 H Limit on 940828 When New Flow Control Circuit Card Would Not Calibr Properly.Original Circuit Card Reinstalled & Calibr | 8 September 1994 | Special Rept:On 940825,offgas Ventilation Exhaust Post Accident RM Declared Inoperable & Exceeded 72 H Limit on 940828 When New Flow Control Circuit Card Would Not Calibr Properly.Original Circuit Card Reinstalled & Calibr | |
| PY-CEI-NRR-1837, Special Rept:On 940515 & 0618,ECCS Manual Actuations W/ Injection Into RCS Occurred as Part of Preplanned Activities for Testing | 8 August 1994 | Special Rept:On 940515 & 0618,ECCS Manual Actuations W/ Injection Into RCS Occurred as Part of Preplanned Activities for Testing | |
| PY-CEI-NRR-1755, Seismic Rept:On 940107,triaxial time-history Accelerographs for Reactor Building & Containment Vessel Declared Inoperable During Performance of Surveillance Testing. Amplifier Card & Motor Driver Card Replaced | 16 February 1994 | Seismic Rept:On 940107,triaxial time-history Accelerographs for Reactor Building & Containment Vessel Declared Inoperable During Performance of Surveillance Testing. Amplifier Card & Motor Driver Card Replaced | Earthquake |
| PY-CEI-NRR-1531, Special Rept:On 920618,Vibration & Loose Part Monitoring (V&Lpm) Sys Experienced Series of Invalid Alarms Due to Excessive Background Noise.Channel 7 of V&Lpm Sys Declared Inoperable.V&Lpm Sys Upgraded | 28 July 1992 | Special Rept:On 920618,Vibration & Loose Part Monitoring (V&Lpm) Sys Experienced Series of Invalid Alarms Due to Excessive Background Noise.Channel 7 of V&Lpm Sys Declared Inoperable.V&Lpm Sys Upgraded | |
| PY-CEI-NRR-1486, Special Rept:On 920315,small Earthquake Occurred 4 Miles Northwest of Plant.On 920323,seismic Recorders Removed from Svc & Remained Inoperable for More than 30 Days.Several Instrumented Locations Available to Record Motion | 1 May 1992 | Special Rept:On 920315,small Earthquake Occurred 4 Miles Northwest of Plant.On 920323,seismic Recorders Removed from Svc & Remained Inoperable for More than 30 Days.Several Instrumented Locations Available to Record Motion | Earthquake |
| PY-CEI-NRR-1360, Special Rept:On 910418,alarms Generated by Noise Spike in 60 Hz Range Due to Inoperable Loose Parts in Detection Sys Instrumentation.Possible Corrective Actions Include Replacement of Cable or Detector | 28 May 1991 | Special Rept:On 910418,alarms Generated by Noise Spike in 60 Hz Range Due to Inoperable Loose Parts in Detection Sys Instrumentation.Possible Corrective Actions Include Replacement of Cable or Detector | |
| PY-CEI-NRR-1342, Special Rept:On 910319,turbine Bldg/Heater Bay Vent Post Accident Radiation Monitor Declared Inoperable to Facilitate Performance of Calibr Procedure.Work Order Revised to Replace Failed Regulator | 5 April 1991 | Special Rept:On 910319,turbine Bldg/Heater Bay Vent Post Accident Radiation Monitor Declared Inoperable to Facilitate Performance of Calibr Procedure.Work Order Revised to Replace Failed Regulator | Grab sample |
| PY-CEI-NRR-1315, Special Rept:On 910115,channel 8 of Vibration & Loose Parts Monitoring Sys Experienced Spurious Alarms That Could Not Be Reset.Caused by Alarm Threshold Set Too Sensitively.Alarm Threshold Raised to Value Comparable W/Channel 7 | 25 February 1991 | Special Rept:On 910115,channel 8 of Vibration & Loose Parts Monitoring Sys Experienced Spurious Alarms That Could Not Be Reset.Caused by Alarm Threshold Set Too Sensitively.Alarm Threshold Raised to Value Comparable W/Channel 7 | |
| PY-CEI-NRR-1248, Special Rept:On 900913,HPCS Piping Triaxial Peak Accelerograph Recorder Could Not Be Calibr.On 900917, Recorder Found Outside Allowable Value.Caused by Damaged Internal Components.Replacement Procured & Calibr | 22 October 1990 | Special Rept:On 900913,HPCS Piping Triaxial Peak Accelerograph Recorder Could Not Be Calibr.On 900917, Recorder Found Outside Allowable Value.Caused by Damaged Internal Components.Replacement Procured & Calibr | Earthquake |
| PY-CEI-NRR-1213, Special Rept:On 900807,radiological Effluent Monitoring Instrumentation Inoperable for 72 H.Caused by Default Setpoints.New Microcomputer Chips Installed in All post-accident Radiation Monitors | 20 August 1990 | Special Rept:On 900807,radiological Effluent Monitoring Instrumentation Inoperable for 72 H.Caused by Default Setpoints.New Microcomputer Chips Installed in All post-accident Radiation Monitors | |
| PY-CEI-NRR-1209, Special Rept:On 900724,sys Meteorological Monitoring Instrumentation Declared Inoperable.Caused by Faulty Lightning Arresters Attached to Resistance Temp Devices. Faulty Arresters Replaced | 10 August 1990 | Special Rept:On 900724,sys Meteorological Monitoring Instrumentation Declared Inoperable.Caused by Faulty Lightning Arresters Attached to Resistance Temp Devices. Faulty Arresters Replaced | |
| PY-CEI-NRR-1061, Special Rept:On 890811,vibration & Loose Parts Monitoring Sys Experienced Spurious Alarms.Caused by Excessive Background Noise.Design Change Request Submitted to Address Hard Line Cable Issue | 20 September 1989 | Special Rept:On 890811,vibration & Loose Parts Monitoring Sys Experienced Spurious Alarms.Caused by Excessive Background Noise.Design Change Request Submitted to Address Hard Line Cable Issue | |
| PY-CEI-NRR-0975, Special Rept:On 890112,vibration & Loose Part Monitoring Sys Experienced Series of Spurious Alarms.Caused by Excessive Background Noises.Channel 4 Declared Inoperable on 890122. Channel Will Be Reworked During First Refueling Outage | 21 February 1989 | Special Rept:On 890112,vibration & Loose Part Monitoring Sys Experienced Series of Spurious Alarms.Caused by Excessive Background Noises.Channel 4 Declared Inoperable on 890122. Channel Will Be Reworked During First Refueling Outage | |
| PY-CEI-NRR-0915, Special Rept:On 880810,vibration & loose-part Monitoring Sys Experienced Loss of Channel 4 Detection String.Caused by Failure of Preamplifier in Channel 4.Preamplifier Replaced on 880817 | 19 September 1988 | Special Rept:On 880810,vibration & loose-part Monitoring Sys Experienced Loss of Channel 4 Detection String.Caused by Failure of Preamplifier in Channel 4.Preamplifier Replaced on 880817 | |
| PY-CEI-NRR-0902, Special Rept NP-38-04:on 880805,primary Containment Area Gross Radiation Monitors Had Less than Min Required Channels Due to Failed Monitor.Caused by High Voltage Failure Due to Defective Voltage Power Supply Circuit Board.Board Repl | 19 August 1988 | Special Rept NP-38-04:on 880805,primary Containment Area Gross Radiation Monitors Had Less than Min Required Channels Due to Failed Monitor.Caused by High Voltage Failure Due to Defective Voltage Power Supply Circuit Board.Board Replaced | Grab sample |
| PY-CEI-NRR-0844, Special Rept NP-38-03:on 880407,turbine Bldg/Heater Bay Ventilation Exhaust post-accident Monitor (D19) Declared Inoperable.Caused by Electrical Failure on Interface/Relay Boards in Control Room Indication Unit | 22 April 1988 | Special Rept NP-38-03:on 880407,turbine Bldg/Heater Bay Ventilation Exhaust post-accident Monitor (D19) Declared Inoperable.Caused by Electrical Failure on Interface/Relay Boards in Control Room Indication Unit | |
| PY-CEI-NRR-0757, Special Rept:On 871116,HPCS Sys Automatically Actuated & Injected to Reactor Vessel Due to Water Level Reaching Level 2.Proper Automatic Response for Feedwater & RCIC Sys Verified | 8 February 1988 | Special Rept:On 871116,HPCS Sys Automatically Actuated & Injected to Reactor Vessel Due to Water Level Reaching Level 2.Proper Automatic Response for Feedwater & RCIC Sys Verified | |
| PY-CEI-NRR-0750, Special Rept:On 871015,valid Failure on Div 2 Diesel Generator Occurred During Tech Spec Surveillance 4.8.1.1.2. Caused by Shuttle Valve Failing to Reposition on Start Signal.Valve Replaced & Design Change Initiated | 13 November 1987 | Special Rept:On 871015,valid Failure on Div 2 Diesel Generator Occurred During Tech Spec Surveillance 4.8.1.1.2. Caused by Shuttle Valve Failing to Reposition on Start Signal.Valve Replaced & Design Change Initiated | |
| PY-CEI-NRR-0737, Special Rept:On 870923,failure of Div 3 Diesel Generator Occurred While Performing Start & Load Surveillance Test. Caused by Incomplete Investigation Into Maint Run Anomoly Which Failed to Identify Blown Fuse.Fuse Replaced | 23 October 1987 | Special Rept:On 870923,failure of Div 3 Diesel Generator Occurred While Performing Start & Load Surveillance Test. Caused by Incomplete Investigation Into Maint Run Anomoly Which Failed to Identify Blown Fuse.Fuse Replaced | |
| PY-CEI-NRR-0729, Special Rept NP-39-01:on 870821,loose Part Detection Sys Declared Inoperable W/Less than Min Required Channels.Caused by Sys Being in Continuous Alarm W/O Confirmation of Loose Parts.Frequency Filters to Be Added | 30 September 1987 | Special Rept NP-39-01:on 870821,loose Part Detection Sys Declared Inoperable W/Less than Min Required Channels.Caused by Sys Being in Continuous Alarm W/O Confirmation of Loose Parts.Frequency Filters to Be Added | |
| PY-CEI-NRR-0721, Special Rept NP-38-02:on 870901,accident Monitoring Instrumentation Inoperable on D19 Area Radiation Monitors. Caused by Degraded Insulation Resistance of Field Cable Sys. Action to Restore Channels to Operable Condition Continuing | 18 September 1987 | Special Rept NP-38-02:on 870901,accident Monitoring Instrumentation Inoperable on D19 Area Radiation Monitors. Caused by Degraded Insulation Resistance of Field Cable Sys. Action to Restore Channels to Operable Condition Continuing | Grab sample |
| PY-CEI-NRR-0675, Special Rept NP-38-01:on 870617,post-accident Effluent Radiation Monitors Monthly Surveillance Channel Checks Dicovered Deficient in Meeting Tech Spec Requirements.Caused by Procedural deficiency.D19 Channel Checks Deleted | 1 July 1987 | Special Rept NP-38-01:on 870617,post-accident Effluent Radiation Monitors Monthly Surveillance Channel Checks Dicovered Deficient in Meeting Tech Spec Requirements.Caused by Procedural deficiency.D19 Channel Checks Deleted | Grab sample |
| PY-CEI-NRR-0615, Special Rept:On 870227,0311 & 17,valid Test & Failures of Div 1 & 2 Diesel Generators Experienced.Caused by Defective Control Air Solenoid Valve & Faulty Control Air Regulator. Valve & Regulator Replaced.Ler Will Be Submitted by 8703 | 27 March 1987 | Special Rept:On 870227,0311 & 17,valid Test & Failures of Div 1 & 2 Diesel Generators Experienced.Caused by Defective Control Air Solenoid Valve & Faulty Control Air Regulator. Valve & Regulator Replaced.Ler Will Be Submitted by 870327 | |
| ML20211P870 | 12 December 1986 | Special Rept:On 861112,valid Failure of Div 3 Diesel Generator Occurred While Performing Surveillance Tech Spec 4.8.1.1.2.Caused by Indicated Open Circuit in Speed Setting Motor Windings.Speed Setting Motor Replaced | |
| ML20215K696 | 20 October 1986 | Ro:On 860911,valid Failure of Div 3 Diesel Genarator Occurred While Performing Tech Spec Surveillance 4.8.1.1.2. Caused by Governor Limit Switch Assembly Failing to Properly Set.Switch Replaced | |
| ML20211K821 | 18 June 1986 | Special Rept:On 860521,valid Failure Occurred on Div 2 Diesel Generator During Performance of Tech Spec Surveillance 4.8.1.1.2.Caused by Failure of Jacket Water Thermostatic Control Valve to Open |