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| Issue date | Title | Topic | |
|---|---|---|---|
| IR 05000275/1999012 | 13 September 1999 | Insp Repts 50-275/99-12 & 50-323/99-12 on 990711-0821. Noncited Violations Noted.Major Areas Inspected:Aspects of Licensee Operations,Maint,Engineering & Plant Support | Grab sample Internal Flooding Earthquake Fuel cladding Fire Protection Program Operability Assessment Siren |
| IR 05000275/1999007 | 27 July 1999 | Insp Repts 50-275/99-07 & 50-323/99-07 on 990503-0714. Apparent Violations Being Considered for Escalated Enforcement Action.Major Areas Inspected:Operations & Engineering | Loop seal Probabilistic Risk Assessment |
| IR 05000275/1998016 | 16 November 1998 | Insp Repts 50-275/98-16 & 50-323/98-16 on 980913-1024.No Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support | Safe Shutdown Grab sample Enforcement Discretion Coatings |
| IR 05000275/1998011 | 22 July 1998 | Insp Repts 50-275/98-11 & 50-323/98-11 on 980526-28.No Violations Noted.Major Areas Inspected:Circumstances, Potential Safety Consequences & Licensee Response & Actions Taken Re Authorization of Tagout W/O Written Procedure | |
| IR 05000275/1998008 | 17 April 1998 | Insp Repts 50-275/98-08 & 50-323/98-05 on 980202-06,23-27 & 0302-18.No Violations Noted.Major Areas Inspected: Engineering | Safe Shutdown Boric Acid Time of Discovery Ultimate heat sink Biofouling Fire Protection Program Water hammer |
| IR 05000275/1998003 | 23 January 1998 | Insp Repts 50-275/98-03 & 50-323/98-03 on 980105-09.No Violations Noted.Major Areas Inspected:Implementation of Solid Radioactive Waste Mgt & Radioactive Matls Transportation | Annual Radioactive Effluent Release Report |
| IR 05000275/1994027 | 21 December 1994 | Insp Repts 50-275/94-27 & 50-323/94-27 on 941016-1126. Violations Noted.Major Areas Inspected:Operational Safety Verification,Plant Maint,Surveillance Observation,Plant Support Activities & in-office Review of LERs | Foreign Material Exclusion Thermography |
| PNO-V-93-013, on 930809,during pre-announced anti-nuclear demonstration,13 Protestors Illegally Entered Plant Access Gate & Immediately Taken Into Custody by Sheriff Deputies. Demonstration Related to CP Recapture Hearings for Plant | 9 August 1993 | PNO-V-93-013:on 930809,during pre-announced anti-nuclear demonstration,13 Protestors Illegally Entered Plant Access Gate & Immediately Taken Into Custody by Sheriff Deputies. Demonstration Related to CP Recapture Hearings for Plant | |
| PNO-V-92-033, on 921019,US Geological Survey Notified California Governor Ofc of Significant Likelihood That Earthquake of Magnitude 6 Will Occur on San Andreas Fault Near Parkfield | 20 October 1992 | PNO-V-92-033:on 921019,US Geological Survey Notified California Governor Ofc of Significant Likelihood That Earthquake of Magnitude 6 Will Occur on San Andreas Fault Near Parkfield | Earthquake |
| PNO-V-91-003, on 910307,unit 1 Shutdown for Refueling Operations & Loss of Offsite Power.Licensee Personnel Manually Moved New Module,Still in Mast,Away from Reactor Vessel & Core | 7 March 1991 | PNO-V-91-003:on 910307,unit 1 Shutdown for Refueling Operations & Loss of Offsite Power.Licensee Personnel Manually Moved New Module,Still in Mast,Away from Reactor Vessel & Core | |
| IR 05000275/1990017 | 22 October 1990 | Partially Withheld Safeguards Insp Repts 50-275/90-17 & 50-323/90-17 on 900924-1008.Noncited Violations Noted.Major Areas Inspected:Physical Security Program | |
| PNO-V-90-033, on 900726,observed Crack in Charging Pump Suction Header Piping Caused by Boric Acid Crystals on Elbow of Pump.Licensee Considers Piping Operable & to Be Repaired W/O Plant Shut Down.Inspector Monitoring Plant | 27 July 1990 | PNO-V-90-033:on 900726,observed Crack in Charging Pump Suction Header Piping Caused by Boric Acid Crystals on Elbow of Pump.Licensee Considers Piping Operable & to Be Repaired W/O Plant Shut Down.Inspector Monitoring Plant | Boric Acid |
| ML20055J200 | 13 July 1990 | Notice of Violation from Insp on 900422-0609.Violations Noted:Work Order Which Provided Instructions for Replacement of Plant Turbine Driven Auxiliary Feedwater Pump Speed Governor Not Appropriate to Circumstances | Overspeed trip |
| ML20245E966 | 31 July 1989 | Partially Withheld Insp Repts 50-275/89-20 & 50-323/89-20 on 890710-18 (Ref 10CFR2.790(d) & 73.21).No Violations Noted.Noncited Violation Noted Re Compensatory Measures. Major Areas Inspected:Physical Security Program | |
| IR 05000275/1989012 | 18 April 1989 | Insp Repts 50-275/89-12 & 50-323/89-12 on 890403-07.No Violations or Deficiencies Noted.Major Areas Inspected: Followup on Previous Insp Findings & Operational Status of Emergency Preparedness Program | Siren |
| IR 05000275/1989003 | 8 February 1989 | Insp Repts 50-275/89-03 & 50-323/89-03 on 890117-26.No Noncompliance Noted.Major Areas Inspected:Nonroutine Events, Followup of Open Items,Radwaste Sys & Radiological Environ Monitoring & Transportation Activities | Annual Radiological Environmental Operating Report Process Control Program Scaffolding Overexposure |
| PNO-V-88-048, on 880717,unit Manually Tripped & Natural Cooldown Commenced as Result of Ground Fault in 12 Kv non- Vital Buses.Event Investigation Team Formed to Determine Location & Cause of Ground Fault | 18 July 1988 | PNO-V-88-048:on 880717,unit Manually Tripped & Natural Cooldown Commenced as Result of Ground Fault in 12 Kv non- Vital Buses.Event Investigation Team Formed to Determine Location & Cause of Ground Fault | |
| ML20196D615 | 27 January 1988 | Exam Rept 50-275/OL-87-02 for Units 1 & 2 on 871208-17.Exam Results:Three Senior Reactor Candidates & Twelve Reactor Operator Candidates Passed Operating & Written Exams | |
| ML20234E807 | 21 December 1987 | Corrected Notice of Violation from Insp on 861215-19. Violation Noted:Qualification Documentation for Limitorque Motorized Valve Actuators Did Not Establish Similarity Between Installed Actuator & Actuator Tested | |
| PNO-V-87-083, on 871213,reactor Tripped.Caused by Loss of Feed Water Pump 1-1.Cause of Trip Under Investigation. Variety of Maint Activities to Be Performed Before Restart | 14 December 1987 | PNO-V-87-083:on 871213,reactor Tripped.Caused by Loss of Feed Water Pump 1-1.Cause of Trip Under Investigation. Variety of Maint Activities to Be Performed Before Restart | |
| PNO-V-87-082, on 871210,fire Occurred in Temporary Tool Storage Trailer in Vicinity of Unit 2 Main Generator Transformers.Caused by 120 Volt Junction Box,Possibly Overloaded from Portable Space Heater.Fire Put Out | 10 December 1987 | PNO-V-87-082:on 871210,fire Occurred in Temporary Tool Storage Trailer in Vicinity of Unit 2 Main Generator Transformers.Caused by 120 Volt Junction Box,Possibly Overloaded from Portable Space Heater.Fire Put Out | |
| IR 05000323/1987039 | 17 November 1987 | Insp Rept 50-323/87-39 on 870805-1030.Violations Noted. Major Areas Inspected:Improperly Authorized Flame Heating of RHR Pipe on 870505 | Nondestructive Examination |
| PNO-V-87-074, on 871110,county Inadvertently Actuated Emergency Notification Sys(Sirens).Caused by Wrong Sequence Being Entered Into Sys While Performing Weekly Silent Test. Corrective Action Under Investigation | 10 November 1987 | PNO-V-87-074:on 871110,county Inadvertently Actuated Emergency Notification Sys(Sirens).Caused by Wrong Sequence Being Entered Into Sys While Performing Weekly Silent Test. Corrective Action Under Investigation | |
| PNO-V-87-073, on 871107,unit Trip Manually Initiated.Caused by Failure of motor-operated Disconnect in Main Generator 25 Kv Isophase Bus C.Repair & Unit Outage Will Take Between 2 Wks & 2 Months,Depending on Availability of Parts | 9 November 1987 | PNO-V-87-073:on 871107,unit Trip Manually Initiated.Caused by Failure of motor-operated Disconnect in Main Generator 25 Kv Isophase Bus C.Repair & Unit Outage Will Take Between 2 Wks & 2 Months,Depending on Availability of Parts | Fire Watch |
| PNO-V-87-066, on 871006,while Performing Periodic Surveillance Testing of Control Rods at 100% Power,Rod Control Urgent Failure Alarm Received on Shutdown Bank A. Caused by Blown Fuses.Fuses Replaced & Alarm Cleared | 6 October 1987 | PNO-V-87-066:on 871006,while Performing Periodic Surveillance Testing of Control Rods at 100% Power,Rod Control Urgent Failure Alarm Received on Shutdown Bank A. Caused by Blown Fuses.Fuses Replaced & Alarm Cleared | |
| IR 05000275/1987032 | 1 September 1987 | Mgt Meeting Repts 50-275/87-32 & 50-323/87-32 on 870817. Major Areas Discussed:Recent Plant Events & Apparent Problem Areas That Have Developed Since Last Mgt Meeting on 870306 | |
| PNO-V-87-053, on 870723,high Radiation Alarm Automatically Diverted Liquid Radwaste Flow to Storage Tank.Licensee Determining Root Cause.Chemical Drain Tank Properly Recirculated & Sampled Prior to Discharge Per Procedure | 24 July 1987 | PNO-V-87-053:on 870723,high Radiation Alarm Automatically Diverted Liquid Radwaste Flow to Storage Tank.Licensee Determining Root Cause.Chemical Drain Tank Properly Recirculated & Sampled Prior to Discharge Per Procedure | |
| PNO-V-87-051, on 870714,reactor Trip & Safety Injection from 12% Power Occurred.Caused by turbine-generator Trip Due to High Steam Generator Water Level & Flickering High Steam Flow Bistables,Respectively.Root Causes Under Investigation | 14 July 1987 | PNO-V-87-051:on 870714,reactor Trip & Safety Injection from 12% Power Occurred.Caused by turbine-generator Trip Due to High Steam Generator Water Level & Flickering High Steam Flow Bistables,Respectively.Root Causes Under Investigation | |
| IR 05000275/1987022 | 23 June 1987 | Insp Rept 50-275/87-22 on 870520-22.Major Areas Inspected: Followup on Allegation File Number RV-87-A-0094 & Followup on Regional Open Items List | |
| ML20215F900 | 17 June 1987 | PNS-V-87-005:on 870617,American Protective Svc Notified Util That Security Personnel on Strike Over Monetary Benefits. Licensee Capable to Meet Security Staffing Requirements Through Use of Proprietary Security Personnel | |
| PNO-V-87-041, on 870602,engineer in Containment Noted Weepage from RHR Sys Line While RHR in Svc.Cause of Effect Undetermined.Licensee Preparing Work Orders to Isolate, Examine & Repair Weld | 3 June 1987 | PNO-V-87-041:on 870602,engineer in Containment Noted Weepage from RHR Sys Line While RHR in Svc.Cause of Effect Undetermined.Licensee Preparing Work Orders to Isolate, Examine & Repair Weld | Boric Acid |
| IR 05000275/1987018 | 8 May 1987 | Insp Repts 50-275/87-18 & 50-323/87-17 on 870420-24.No Noncompliance or Deviations Noted.Major Areas Inspected: Nonlicensed Staff Training,Followup of Part 21 Repts,Various Vital Areas & Equipment | |
| ML20209D513 | 23 April 1987 | Updated PNO-V-87-030B:on 870421,onsite Phase of AIT Team Special Insp Into 870410 Loss of Suction to RHR Sys While in half-loop Concluded W/Meeting at Site | |
| PNO-V-87-030A, on 870415,Region V Augmented Insp Team Commenced Insp Activities Re 870410 Loss of Suction to RHR While at Half Loop.Team Expects to Stay Onsite Through 870421.Summary of Sequence of Event Encl | 20 April 1987 | PNO-V-87-030A:on 870415,Region V Augmented Insp Team Commenced Insp Activities Re 870410 Loss of Suction to RHR While at Half Loop.Team Expects to Stay Onsite Through 870421.Summary of Sequence of Event Encl | Boric Acid |
| PNO-V-87-030, on 870410,RHR Sys Capability Lost for Approx 90 Minutes.Caused by Entrainment of Air within RHR Pumps When RCS Water Level Dropped Due to Water Leakage Through Two Valves.Augmented Insp Team Dispatched | 13 April 1987 | PNO-V-87-030:on 870410,RHR Sys Capability Lost for Approx 90 Minutes.Caused by Entrainment of Air within RHR Pumps When RCS Water Level Dropped Due to Water Leakage Through Two Valves.Augmented Insp Team Dispatched | |
| PNO-V-87-028, on 870403,reactor Tripped from 12% Power During Shut Down for First Refueling Outage.Caused by Flicker of High Steam Flow Bistables Coincident w/lo-lo T Average.Investigation Continuing | 6 April 1987 | PNO-V-87-028:on 870403,reactor Tripped from 12% Power During Shut Down for First Refueling Outage.Caused by Flicker of High Steam Flow Bistables Coincident w/lo-lo T Average.Investigation Continuing | |
| ML20215G302 | 26 March 1987 | Notice of Violation from Insp on 870202-13.App B Re Areas Inspected & Results Encl | Boric Acid |
| IR 05000275/1987001 | 25 March 1987 | Insp Repts 50-275/87-01 & 50-323/87-01 on 870202-13. Violation Noted:Failure to Maintain Control Over Lubricants | Boric Acid Stroke time Post Accident Monitoring Probabilistic Risk Assessment Commercial Grade |
| PNO-V-87-025, on 870321,facility Experienced Safety Injection,Reactor Trip & Unit Trip.Caused by Coincidence of High Steam Flow & Low Steam Generator Pressure Signals Due to Closure of MSIV FCV 41.Piping & Valve Switches Inspected | 23 March 1987 | PNO-V-87-025:on 870321,facility Experienced Safety Injection,Reactor Trip & Unit Trip.Caused by Coincidence of High Steam Flow & Low Steam Generator Pressure Signals Due to Closure of MSIV FCV 41.Piping & Valve Switches Inspected | |
| IR 05000275/1986033 | 17 March 1987 | Insp Repts 50-275/86-33 & 50-323/86-31 on 861215-19. Deficiencies Noted.Major Areas Inspected:Implementation Program for Establishing & Maintaining Environ Qualification of Electrical Equipment Important to Safety | |
| IR 05000275/1987009 | 11 March 1987 | Insp Repts 50-275/87-09 & 50-323/87-08 on 870223-27.No Noncompliance Noted.Major Areas Inspected:Followup of IE Bulletins,Vital Areas & Equipment | Temporary Modification Fire Watch |
| PNO-V-87-018, on 870301,1-2 Mw/Min Shutdown Initiated to Investigate & Repair Main Generator Hydrogen Coolant Leak. Vibration,Induced by Main Generator,Caused Cracking in Welds of Stator Cooling Water Sys Which Occurred on 870217 | 2 March 1987 | PNO-V-87-018:on 870301,1-2 Mw/Min Shutdown Initiated to Investigate & Repair Main Generator Hydrogen Coolant Leak. Vibration,Induced by Main Generator,Caused Cracking in Welds of Stator Cooling Water Sys Which Occurred on 870217 | |
| PNO-V-87-016, on 870221,shutdown Commenced Due to Train B of Solid State Protection Sys Not Returning to Svc within 2 H. Caused by High Steam Generator Level on Generator 1-4 & Feedwater Flow Instabilities & Valve Position Problem | 23 February 1987 | PNO-V-87-016:on 870221,shutdown Commenced Due to Train B of Solid State Protection Sys Not Returning to Svc within 2 H. Caused by High Steam Generator Level on Generator 1-4 & Feedwater Flow Instabilities & Valve Position Problem | |
| IR 05000275/1987004 | 20 February 1987 | Insp Repts 50-275/87-04 & 50-323/87-04 on 861228-870207.No Violations or Deviations Noted.Major Areas Inspected:Plant Operations,Maint & Surveillance Activities & Followup of Onsite Events,Open Items & LERs | Boric Acid Stroke time Biofouling |
| PNO-V-87-014, on 870217,slow Shutdown from 100% Power Initiated to Investigate & Repair Main Generator Hydrogen Coolant Leak.Caused by Cracking in Stator Water Cooling Vent Line Due to Vibration.Outage Expected to Last Approx 1 Wk | 18 February 1987 | PNO-V-87-014:on 870217,slow Shutdown from 100% Power Initiated to Investigate & Repair Main Generator Hydrogen Coolant Leak.Caused by Cracking in Stator Water Cooling Vent Line Due to Vibration.Outage Expected to Last Approx 1 Wk | |
| IR 05000275/1987007 | 12 February 1987 | Insp Repts 50-275/87-07 & 50-323/87-06 on 870202-06. No Items of Noncompliance or Deviations Identified.Major Areas Inspected:Design,Design Changes & Mods & Followup on IE Notices & Nonconformance Repts | Missed surveillance |
| ML20211M170 | 10 February 1987 | Notice of Violation from Insp on 870112-13 | |
| IR 05000275/1987006 | 6 February 1987 | Insp Rept 50-275/87-06 on 870112-13.Violation Noted: Notification of 870102 Emergency Plan Unusual Event Did Not Occur Until 95 Minutes After Declaration | |
| IR 05000275/1986032 | 30 January 1987 | Insp Repts 50-275/86-32 & 50-323/86-30 on 861109-1227 & 870116.No Violations or Deviations Noted.Major Areas Inspected:Plant Operations,Maint & Surveillance Activities, Followup of Onsite Events & Allegations | Unanalyzed Condition Time of Discovery Loop seal Post Accident Monitoring Anchor Darling Missed surveillance Earthquake Water hammer |
| IR 05000275/1987003 | 30 January 1987 | Insp Repts 50-275/87-03 & 50-323/87-03 on 870112-16.No Violations or Deviations Noted.Major Areas Inspected: Previous Insp Items,Transportation,Solid Waste,Licensee Identified Violation & Facility Tours | High Radiation Area Process Control Program |