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	Issue date	Title	Topic
PNO-II-96-081, on 961112,Unit 2 Experienced Turbine Generator Trip from 100% Power.Investigation Into Cause of Turbine Generator Trip Revealed Ground Fault on Main Generator Stator Phase a Windings.Addl Followup Will Be Performed	13 November 1996	PNO-II-96-081:on 961112,Unit 2 Experienced Turbine Generator Trip from 100% Power.Investigation Into Cause of Turbine Generator Trip Revealed Ground Fault on Main Generator Stator Phase a Windings.Addl Followup Will Be Performed
PNO-II-93-062, on 931115,Unit 2 Tripped from 95% Reactor Power.Caused by Three Main Feedwater Regulating Valves Closed.Unit Has Been Taken to cold-shutdown to Investigate Cause of SG Level Oscillations	16 November 1993	PNO-II-93-062:on 931115,Unit 2 Tripped from 95% Reactor Power.Caused by Three Main Feedwater Regulating Valves Closed.Unit Has Been Taken to cold-shutdown to Investigate Cause of SG Level Oscillations
PNO-II-93-037, on 930820,unscheduled Shutdown in Excess of 72 H Occurred Due to Need to Repair Leak in Joint on SG B. RCS Temp Reduced Below 200 Degrees F.Licensee to Inspect Drain Valve Assemblies on Sg.State of VA Notified	23 August 1993	PNO-II-93-037:on 930820,unscheduled Shutdown in Excess of 72 H Occurred Due to Need to Repair Leak in Joint on SG B. RCS Temp Reduced Below 200 Degrees F.Licensee to Inspect Drain Valve Assemblies on Sg.State of VA Notified
PNO-II-92-020, on 920327,hot Particle Was Detected on Forehead of Health Physics Technician When Exiting Radiation Control Area.No Erythema Was Oberved & Employee Scheduled to Visit Company Physician as Precaution	30 March 1992	PNO-II-92-020:on 920327,hot Particle Was Detected on Forehead of Health Physics Technician When Exiting Radiation Control Area.No Erythema Was Oberved & Employee Scheduled to Visit Company Physician as Precaution
PNO-II-90-066, on 901023,util Made 1 H Rept Per 10CFR50.72 Re Entry Into Station Emergency Plan for Shutdown of Unit 2. Caused by Svc Water Flow,Less That Design Basis Required Flow.Licensee Currently Evaluating Situation	23 October 1990	PNO-II-90-066:on 901023,util Made 1 H Rept Per 10CFR50.72 Re Entry Into Station Emergency Plan for Shutdown of Unit 2. Caused by Svc Water Flow,Less That Design Basis Required Flow.Licensee Currently Evaluating Situation
PNO-II-89-066, licensees Prepared for Adverse Weather Conditions Due to Hurricane.Briefings Held W/Key Managers on Responsibilities to Check All Trailers,Secure Crane Hooks & Increase Emergency Food Supplies	21 September 1989	PNO-II-89-066:licensees Prepared for Adverse Weather Conditions Due to Hurricane.Briefings Held W/Key Managers on Responsibilities to Check All Trailers,Secure Crane Hooks & Increase Emergency Food Supplies
PNO-II-89-066A, updates Status of Hurricane Hugo for Nuclear Facilities in Southeast.Manning of Incident Response Ctr by Region II Continuing	21 September 1989	PNO-II-89-066A:updates Status of Hurricane Hugo for Nuclear Facilities in Southeast.Manning of Incident Response Ctr by Region II Continuing
ML20247N007	11 September 1989	PNS-I-89-015:revised Notification of Telephone Threat, Correcting Event Date from 890909 to 890911.Call, Originating from Limerick or Peach Bottom,Received at Corporate Ofc.On 890525,threat Received at Peach Bottom
PNO-V-89-047, on 890808,earthquake & Aftershock of 5.1 & 4.2 Magnitudes,Respectively,Occurred Approx 15 Miles Southwest of San Jose,Ca.Reactors Shutdown During Earthquake.Tour of GE Reactor Disclosed No Damage	8 August 1989	PNO-V-89-047:on 890808,earthquake & Aftershock of 5.1 & 4.2 Magnitudes,Respectively,Occurred Approx 15 Miles Southwest of San Jose,Ca.Reactors Shutdown During Earthquake.Tour of GE Reactor Disclosed No Damage	Earthquake
PNO-IV-89-045, on 890703,earthquake Near Tremonton,Ut Occurred.Earthquake Safety Interlocks Did Not Trip & No Damage Occurred	5 July 1989	PNO-IV-89-045:on 890703,earthquake Near Tremonton,Ut Occurred.Earthquake Safety Interlocks Did Not Trip & No Damage Occurred	Earthquake
PNO-V-89-022, on 880403,earthquake of Magnitude of 4.5 on Richter Scale Occurred 10 Miles Northeast of San Jose,Ca. Automatic Seismic Protection Did Not Trigger Shutdown. Reactors Manually Shutdown.No Radioactive Release Occurred	3 April 1989	PNO-V-89-022:on 880403,earthquake of Magnitude of 4.5 on Richter Scale Occurred 10 Miles Northeast of San Jose,Ca. Automatic Seismic Protection Did Not Trigger Shutdown. Reactors Manually Shutdown.No Radioactive Release Occurred	Earthquake
PNO-II-89-026, 80,000 1b Reactor Coolant Pump Motor Enroute to Cheswick,Pa Collapsed One Side of Low Boy Trailer Resulting in Small Brush Fire.Surveys at Site Confirmed No Contamination.Commonwealth of VA Health Dept Notified	27 March 1989	PNO-II-89-026:80,000 1b Reactor Coolant Pump Motor Enroute to Cheswick,Pa Collapsed One Side of Low Boy Trailer Resulting in Small Brush Fire.Surveys at Site Confirmed No Contamination.Commonwealth of VA Health Dept Notified
PNO-IV-89-020, Region IV Notified of Recent Reactor Trip at Palo Verde Unit 3 That Was Complicated by Inability to Open Steam Generator Atmospheric Dump Valves Mfg by Control Components,Inc.No Sticking Problems Noted at Other Plants	23 March 1989	PNO-IV-89-020:Region IV Notified of Recent Reactor Trip at Palo Verde Unit 3 That Was Complicated by Inability to Open Steam Generator Atmospheric Dump Valves Mfg by Control Components,Inc.No Sticking Problems Noted at Other Plants
PNO-II-89-015A, on 890225,primary to Secondary Steam Generator Tube Leak at Plant.Caused by Mechanical Failure. Eddy Current & Boroscopic Insps of Affected Tube Will Be Conducted Following Removal of Plug	10 March 1989	PNO-II-89-015A:on 890225,primary to Secondary Steam Generator Tube Leak at Plant.Caused by Mechanical Failure. Eddy Current & Boroscopic Insps of Affected Tube Will Be Conducted Following Removal of Plug
PNO-II-89-015, on 890125,Unit 1 Tripped Due to Ruptured Air Line to Main Feedwater Regulating Valve.Subsequent to Trip, Radiation Monitor Indications & Increased Charging Flow Revealed primary-to-secondary Leak from C Steam Generator	27 February 1989	PNO-II-89-015:on 890125,Unit 1 Tripped Due to Ruptured Air Line to Main Feedwater Regulating Valve.Subsequent to Trip, Radiation Monitor Indications & Increased Charging Flow Revealed primary-to-secondary Leak from C Steam Generator
PNO-I-88-116, on 881108,voters Voted Down state-wide Referendum to Shutdown Plants in State of Ma If Nuclear Waste Produced in Process	9 November 1988	PNO-I-88-116:on 881108,voters Voted Down state-wide Referendum to Shutdown Plants in State of Ma If Nuclear Waste Produced in Process
PNO-V-88-044, on 880627,earthquake Occurred 5 Miles East of Santa Cruz,Ca.Seismic Instrumentation Not Triggered at Vallecitos,Aerotest Operations or at Univ of California at Berkeley	27 June 1988	PNO-V-88-044:on 880627,earthquake Occurred 5 Miles East of Santa Cruz,Ca.Seismic Instrumentation Not Triggered at Vallecitos,Aerotest Operations or at Univ of California at Berkeley	Earthquake
PNO-V-88-038, on 880612,earthquake Occurred on Calaveras Fault within 50 Miles of Identified Facilities.All Reactors Shutdown at Time of Earthquake.No Seismic Trips Observed. Insp Revealed No Signs of Damage at Facilities	13 June 1988	PNO-V-88-038:on 880612,earthquake Occurred on Calaveras Fault within 50 Miles of Identified Facilities.All Reactors Shutdown at Time of Earthquake.No Seismic Trips Observed. Insp Revealed No Signs of Damage at Facilities	Earthquake
PNO-IV-88-040, on 880509,System Energy Resources,Inc to Manage & Operate All Middle South Nuclear Plants.Arkansas Power & Light & Louisiana Power & Light Will Apply for Appropriate License Amends	9 May 1988	PNO-IV-88-040:on 880509,System Energy Resources,Inc to Manage & Operate All Middle South Nuclear Plants.Arkansas Power & Light & Louisiana Power & Light Will Apply for Appropriate License Amends
PNO-II-88-022, on 880405,low Levels of Radioactive Matl Detected in Demineralizer Beds for Plant Makeup Water.Caused by Concentrating Effect of Radionuclides.Licensee Currently Storing Spent Demineralizer Beds Onsite Until NRC Approval	6 April 1988	PNO-II-88-022:on 880405,low Levels of Radioactive Matl Detected in Demineralizer Beds for Plant Makeup Water.Caused by Concentrating Effect of Radionuclides.Licensee Currently Storing Spent Demineralizer Beds Onsite Until NRC Approval
PNO-I-88-020, on 880216,CA Mcneill Named Executive Director - Nuclear W/Responsibility of Directing Nuclear Operations, Including Nuclear Dept Reorganization & Restart Efforts of Peach Bottom	16 February 1988	PNO-I-88-020:on 880216,CA Mcneill Named Executive Director - Nuclear W/Responsibility of Directing Nuclear Operations, Including Nuclear Dept Reorganization & Restart Efforts of Peach Bottom
PNO-II-88-011, on 880206,slight Positive Pressure Created in Primary Drain Tank Due to Large Vol of Water & Overhead Gas Compressor Inoperable,Causing Gaseous Leak in Auxiliary Bldg.Cause Not Stated	8 February 1988	PNO-II-88-011:on 880206,slight Positive Pressure Created in Primary Drain Tank Due to Large Vol of Water & Overhead Gas Compressor Inoperable,Causing Gaseous Leak in Auxiliary Bldg.Cause Not Stated
PNO-I-88-017, on 880202,util to Announce Change to Corporate Mgt,Per Highly Critical INPO Ltr.Jh Austin Will Retire as of 880301 & Jl Everett Will Assume Duties of President Until Replacement Named	2 February 1988	PNO-I-88-017:on 880202,util to Announce Change to Corporate Mgt,Per Highly Critical INPO Ltr.Jh Austin Will Retire as of 880301 & Jl Everett Will Assume Duties of President Until Replacement Named
PNO-II-88-004, on 880113,licensee Identified Resin Intrusion from Powdex Demineralizer Sys Into Secondary Side of Steam Generator.Resin Causes Formation of Sulphates,Believed to Be Prime Cause of Steam Generator Tube Failures	14 January 1988	PNO-II-88-004:on 880113,licensee Identified Resin Intrusion from Powdex Demineralizer Sys Into Secondary Side of Steam Generator.Resin Causes Formation of Sulphates,Believed to Be Prime Cause of Steam Generator Tube Failures
PNO-I-88-001, on 880104,realignment of Nuclear Mgt Updated. Action Provides for Corporate Officer at Each Plant to Elevate Level of Plant in Corporate Mgt Structure	4 January 1988	PNO-I-88-001:on 880104,realignment of Nuclear Mgt Updated. Action Provides for Corporate Officer at Each Plant to Elevate Level of Plant in Corporate Mgt Structure
PNO-II-87-079, on 871128,North Anna Unit 1 Was Taken Off Line Due to Excessive Seal Leakage on B Reactor Coolant Pump. Outage Planned for 10 Days to Replace Seal Package & Inspect Lower Radial Bearing on Pump.Commonwealth of VA Informed	1 December 1987	PNO-II-87-079:on 871128,North Anna Unit 1 Was Taken Off Line Due to Excessive Seal Leakage on B Reactor Coolant Pump. Outage Planned for 10 Days to Replace Seal Package & Inspect Lower Radial Bearing on Pump.Commonwealth of VA Informed
PNO-II-87-078, on 871126,licensee Removed Unit 1 from Svc to Repair Leaking Manway Cover on Secondary Side of C Steam Generator.Unit Cooled Down & Manway Gasket Replaced. Commonwealth of Virginia Informed	30 November 1987	PNO-II-87-078:on 871126,licensee Removed Unit 1 from Svc to Repair Leaking Manway Cover on Secondary Side of C Steam Generator.Unit Cooled Down & Manway Gasket Replaced. Commonwealth of Virginia Informed
PNO-V-87-076, on 871123-24,two Moderate Earthquakes Centered Near Westmoreland,Ca Occurred,Triggering Seismic Alarms at San Onofre.Unusal Event Declared.Plant Sys & Components Not Adversely Affected.Effects on Other Locations Noted	24 November 1987	PNO-V-87-076:on 871123-24,two Moderate Earthquakes Centered Near Westmoreland,Ca Occurred,Triggering Seismic Alarms at San Onofre.Unusal Event Declared.Plant Sys & Components Not Adversely Affected.Effects on Other Locations Noted	Earthquake
PNO-III-87-138, on 871103,reactor Shutdown After Two MSIV Failed to Close.Valves Recycled Resulting in Acceptable Time Responses.Augumented Insp Team Dispatched to Plant Site to Review Possible Causes of MSIV Closure Problems	3 November 1987	PNO-III-87-138:on 871103,reactor Shutdown After Two MSIV Failed to Close.Valves Recycled Resulting in Acceptable Time Responses.Augumented Insp Team Dispatched to Plant Site to Review Possible Causes of MSIV Closure Problems
PNO-II-87-069, on 871012,Turkey Point Units 3 & 4 Declared NOUE Based on Potential for Hurricane Force Winds & Technical Support Ctr Activated for Mgt of Storm Preparation & Operations.St Lucie Also Made Severe Weather Preparations	13 October 1987	PNO-II-87-069:on 871012,Turkey Point Units 3 & 4 Declared NOUE Based on Potential for Hurricane Force Winds & Technical Support Ctr Activated for Mgt of Storm Preparation & Operations.St Lucie Also Made Severe Weather Preparations
PNO-II-87-070, on 871013,NRC Authorized Startup & Operation Limited to 50% Power for Facility,Down Since 870715 Following Steam Generator Tube Rupture.No Evidence of Steam Generator Tube Leakage Noted	13 October 1987	PNO-II-87-070:on 871013,NRC Authorized Startup & Operation Limited to 50% Power for Facility,Down Since 870715 Following Steam Generator Tube Rupture.No Evidence of Steam Generator Tube Leakage Noted
PNO-I-87-093, on 871009,util Announced Listed Changes to Corporate Nuclear Mgt to Provide for Corporate Officer at Each Plant & to Elevate Plant Level.Changes Will Be Effective on 871101.Nuclear Review Board Reconstituted	9 October 1987	PNO-I-87-093:on 871009,util Announced Listed Changes to Corporate Nuclear Mgt to Provide for Corporate Officer at Each Plant & to Elevate Plant Level.Changes Will Be Effective on 871101.Nuclear Review Board Reconstituted
PNO-II-87-061, on 870920,automatic Trip from 100% Power Occurred.Caused by Phase to Ground Fault in B Phase at Electrical Connection on B Reactor Coolant Pump.Safety Injection Signal Reset	21 September 1987	PNO-II-87-061:on 870920,automatic Trip from 100% Power Occurred.Caused by Phase to Ground Fault in B Phase at Electrical Connection on B Reactor Coolant Pump.Safety Injection Signal Reset
PNO-II-87-060, on 870719,hot Particle Recovered from Skin of Left Shoulder Blade of Contract Health Physics Technician & Determined to Be 1.6 Uci of C-60.Investigation Continuing. Technician Restricted from Radiation Control Zone	20 August 1987	PNO-II-87-060:on 870719,hot Particle Recovered from Skin of Left Shoulder Blade of Contract Health Physics Technician & Determined to Be 1.6 Uci of C-60.Investigation Continuing. Technician Restricted from Radiation Control Zone
PNO-II-87-053A, on 870730,State of Ny,Dept of Environ Conservation & Dept of Radiation Health Completed Survey of Miscellaneous Boxes & Equipment W/Markings from VEPCO Found in Abandoned Bldg in Springwater,Ny.No Problems Noted	30 July 1987	PNO-II-87-053A:on 870730,State of Ny,Dept of Environ Conservation & Dept of Radiation Health Completed Survey of Miscellaneous Boxes & Equipment W/Markings from VEPCO Found in Abandoned Bldg in Springwater,Ny.No Problems Noted
PNO-II-87-053, on 870728,licensee Notified That Fireman Discovered Miscellaneous Boxes & Equipment in Abandoned Bldg Outside Springwater,Ny.Matl Might Be Clean Surplus Matl Disposed of After Cancellation of North Anna 3	29 July 1987	PNO-II-87-053:on 870728,licensee Notified That Fireman Discovered Miscellaneous Boxes & Equipment in Abandoned Bldg Outside Springwater,Ny.Matl Might Be Clean Surplus Matl Disposed of After Cancellation of North Anna 3
PNO-III-87-101, on 870726,licensee Received Bomb Threat from Caller Angry Because Place of Residence Lost Power During Storm.Security Personnel Notified & Search Procedures Implemented.No Bomb Discovered	27 July 1987	PNO-III-87-101:on 870726,licensee Received Bomb Threat from Caller Angry Because Place of Residence Lost Power During Storm.Security Personnel Notified & Search Procedures Implemented.No Bomb Discovered
PNO-II-87-049, on 870716,augmented Insp Team Formed After Licensee Calculated Possible Leak Rate of 600 Gpm.Util Will Visually Inspect Steam Generator for More Precise Reading on Occurrence & Reconstructing Circumstances of Event	17 July 1987	PNO-II-87-049:on 870716,augmented Insp Team Formed After Licensee Calculated Possible Leak Rate of 600 Gpm.Util Will Visually Inspect Steam Generator for More Precise Reading on Occurrence & Reconstructing Circumstances of Event	Safe Shutdown
PNO-II-87-048, on 870715,cold Shutdown Reached & Util Downgraded from Alert Status to Recovery Mode.Nrc Inspectors Will Remain Onsite to Follow Up on Licensee Actions & Assess Sequence of Events.Pno Updates PNO-II-87-047	15 July 1987	PNO-II-87-048:on 870715,cold Shutdown Reached & Util Downgraded from Alert Status to Recovery Mode.Nrc Inspectors Will Remain Onsite to Follow Up on Licensee Actions & Assess Sequence of Events.Pno Updates PNO-II-87-047
PNO-II-87-047, on 870715,unit Experienced Steam Generator Tube Leak.Util Reported Estimated Release of Radioactive Matl to Atmosphere Less than 1.3% of Tech Spec Release Limit.Release Path Isolated	15 July 1987	PNO-II-87-047:on 870715,unit Experienced Steam Generator Tube Leak.Util Reported Estimated Release of Radioactive Matl to Atmosphere Less than 1.3% of Tech Spec Release Limit.Release Path Isolated