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| Issue date | Title | Topic | |
|---|---|---|---|
| PNO-II-99-043, on 991013,Palisades Nuclear Plant Located Near South Haven,Mi Notified NRC That Package Received from Licensee Exceeded External Radiation Limits of 200 Mrem Per H Authorized by Regulations.Shipper & Carrier Notified | 14 October 1999 | PNO-II-99-043:on 991013,Palisades Nuclear Plant Located Near South Haven,Mi Notified NRC That Package Received from Licensee Exceeded External Radiation Limits of 200 Mrem Per H Authorized by Regulations.Shipper & Carrier Notified | |
| PNO-III-93-055, on 930917,indications of Leak Found in Pipe Connecting Top of Pressurizer to Two PORVs During Insp of Reactor Sys Piping.Issues Related to Cracked Pipe Being Reviewed by Region III & NRR & Repairs Underway | 24 September 1993 | PNO-III-93-055:on 930917,indications of Leak Found in Pipe Connecting Top of Pressurizer to Two PORVs During Insp of Reactor Sys Piping.Issues Related to Cracked Pipe Being Reviewed by Region III & NRR & Repairs Underway | |
| PNO-III-93-049A, provides Update on Degraded Neutron Absorbing Plates in Spent Fuel Pool at Plant.Licensee Determined That Sufficient Subcritical Margin Maintained in Spent Fuel Pool.State of Mi Informed | 31 August 1993 | PNO-III-93-049A:provides Update on Degraded Neutron Absorbing Plates in Spent Fuel Pool at Plant.Licensee Determined That Sufficient Subcritical Margin Maintained in Spent Fuel Pool.State of Mi Informed | |
| PNO-III-93-038, on 930701,licensee Discovered Highly Radioactive Object on Floor of upender-tilt Pit in Refueling Area of Containment.There Have Been No Radiation Overexposures as Result of Event | 1 July 1993 | PNO-III-93-038:on 930701,licensee Discovered Highly Radioactive Object on Floor of upender-tilt Pit in Refueling Area of Containment.There Have Been No Radiation Overexposures as Result of Event | |
| PNO-III-93-027, on 930504,listed Individuals Filed Suit Against NRC on Dry Cask Storage Sys at Plant.Util Planning to Begin Movement of Sf Into Storage Casks on 930507 | 4 May 1993 | PNO-III-93-027:on 930504,listed Individuals Filed Suit Against NRC on Dry Cask Storage Sys at Plant.Util Planning to Begin Movement of Sf Into Storage Casks on 930507 | |
| PNO-III-89-007, on 890130 Unit Taken off-line to Repair Primary to Secondary Tube Leak in B Sg.Caused by Leakage Increase Since 890124 & Reaching Licensee Administrative Limit of 0.1 Gpm.Plans Include Preventive Plugging of Tubes | 1 February 1989 | PNO-III-89-007:on 890130 Unit Taken off-line to Repair Primary to Secondary Tube Leak in B Sg.Caused by Leakage Increase Since 890124 & Reaching Licensee Administrative Limit of 0.1 Gpm.Plans Include Preventive Plugging of Tubes | |
| PNO-III-87-140, on 871111,oiler on Feedwater Block Valve Exploded in Turbine Bldg,Injuring Two Workers.One Individual Taken to Local Hosp & Later Transferred to Kalamazoo,Mi Hosp for Surgery & Second Worker Treated at Plant | 12 November 1987 | PNO-III-87-140:on 871111,oiler on Feedwater Block Valve Exploded in Turbine Bldg,Injuring Two Workers.One Individual Taken to Local Hosp & Later Transferred to Kalamazoo,Mi Hosp for Surgery & Second Worker Treated at Plant | |
| PNO-III-87-134, on 871015,w/unit Cold Shutdown for Maint, Operators Tripped Operating Shutdown Coolant Pump in Response to Alarms & Indications of Fluctuation Pressure within Pump | 16 October 1987 | PNO-III-87-134:on 871015,w/unit Cold Shutdown for Maint, Operators Tripped Operating Shutdown Coolant Pump in Response to Alarms & Indications of Fluctuation Pressure within Pump | |
| PNO-III-87-131, on 871007,util & Bechtel Power Corp Issued Joint Press Release Announcing Tentative Agreement to Form New Joint Venture Which Would Own & Operate Facility.Util Would Continue to Operate Facility Under Contract for 3 Yrs | 7 October 1987 | PNO-III-87-131:on 871007,util & Bechtel Power Corp Issued Joint Press Release Announcing Tentative Agreement to Form New Joint Venture Which Would Own & Operate Facility.Util Would Continue to Operate Facility Under Contract for 3 Yrs | |
| PNO-III-87-097A, on 870714,preliminary Review of Incident Determined That Startup Transformer 1-2 Faulted.Cause of Initial Fault Still Under Investigation | 15 July 1987 | PNO-III-87-097A:on 870714,preliminary Review of Incident Determined That Startup Transformer 1-2 Faulted.Cause of Initial Fault Still Under Investigation | |
| PNO-III-87-097, on 870714,plant Lost Offsite Power Causing Reactor Trip.Caused by Ground Fault in One of Three Startup Transformers.Main Generator Will Be Disconnected from Main Transformer Which Will Feed Power to Plant | 14 July 1987 | PNO-III-87-097:on 870714,plant Lost Offsite Power Causing Reactor Trip.Caused by Ground Fault in One of Three Startup Transformers.Main Generator Will Be Disconnected from Main Transformer Which Will Feed Power to Plant | |
| PNO-III-87-095, on 870709,reduction in Power Occurred Due to Handswitch Failure on Cooling Tower Pump B Discharge Valve. on 870710,decreasing Oil Pressure in Primary Coolant Pump Noted.Possibly Caused by Pump Vibration Creating Oil Leak | 10 July 1987 | PNO-III-87-095:on 870709,reduction in Power Occurred Due to Handswitch Failure on Cooling Tower Pump B Discharge Valve. on 870710,decreasing Oil Pressure in Primary Coolant Pump Noted.Possibly Caused by Pump Vibration Creating Oil Leak | |
| PNO-III-87-085, on 870620,while Reducing Power for Governor Valve Test on Main Turbine,Turbine Was Taken Off Line After Discovery of electro-hydraulic Control Fluid Leak on 4 Governor Valve | 22 June 1987 | PNO-III-87-085:on 870620,while Reducing Power for Governor Valve Test on Main Turbine,Turbine Was Taken Off Line After Discovery of electro-hydraulic Control Fluid Leak on 4 Governor Valve | |
| PNO-III-87-081, on 870610,earthquake Measuring 5.0 on Richter Scale Occurred Near Lawrenceville,Il.Unusual Events Declared by Six Power Stations But No Damage Observed.Ground Motion Felt at Five Other Plants | 11 June 1987 | PNO-III-87-081:on 870610,earthquake Measuring 5.0 on Richter Scale Occurred Near Lawrenceville,Il.Unusual Events Declared by Six Power Stations But No Damage Observed.Ground Motion Felt at Five Other Plants | Earthquake |
| PNO-III-87-053, on 870412,reactor Manually Tripped as Result of Leak in Electrohydraulic Control (EHC) Sys for Main Turbine.Caused by Fatigue Failure of Impeller of Pump in EHC Sys.Pump Repaired | 13 April 1987 | PNO-III-87-053:on 870412,reactor Manually Tripped as Result of Leak in Electrohydraulic Control (EHC) Sys for Main Turbine.Caused by Fatigue Failure of Impeller of Pump in EHC Sys.Pump Repaired | |
| PNO-III-87-044C, on 870405,unit Completed Testing Activities at 30% Level & Increased Power at 45% for Further Testing & Review.Power Held at 45% for Repair of Valve in Cooling Tower Sys & Oil Flow in Main Feedwater Pump Bearing | 10 April 1987 | PNO-III-87-044C:on 870405,unit Completed Testing Activities at 30% Level & Increased Power at 45% for Further Testing & Review.Power Held at 45% for Repair of Valve in Cooling Tower Sys & Oil Flow in Main Feedwater Pump Bearing | |
| PNO-III-87-044B, on 870403,unit Tied to Util Electrical Grid for First Time Since 860519 Reactor Trip.Licensee Began Plant Startup on 870327 But Returned to Cold Shutdown to Replace Failed Nuclear Instrument | 3 April 1987 | PNO-III-87-044B:on 870403,unit Tied to Util Electrical Grid for First Time Since 860519 Reactor Trip.Licensee Began Plant Startup on 870327 But Returned to Cold Shutdown to Replace Failed Nuclear Instrument | |
| PNO-III-87-044A, on 870327,after Attempted Critical Approach, Plant Taken Back to Cold Shutdown to Replace Nuclear Instrument Detector Which Did Not Indicate Properly.Work Should Be Completed by 870401 | 30 March 1987 | PNO-III-87-044A:on 870327,after Attempted Critical Approach, Plant Taken Back to Cold Shutdown to Replace Nuclear Instrument Detector Which Did Not Indicate Properly.Work Should Be Completed by 870401 | |
| PNO-III-87-044, on 870326,licensee Formally Requested Region III to Allow Restart of Unit.On 870327,region Issued Confirmatoru Action Ltr Permitting Restart & Power Ascension Program.Instrument Channel Malfunctioned During Preparation | 27 March 1987 | PNO-III-87-044:on 870326,licensee Formally Requested Region III to Allow Restart of Unit.On 870327,region Issued Confirmatoru Action Ltr Permitting Restart & Power Ascension Program.Instrument Channel Malfunctioned During Preparation | |
| PNO-III-86-146, on 861212 Unidentified Male Telephoned Bangor,Michigan,Fire Dept & South Haven Tribune Newspaper Threatening to Randomly Shoot at Plant.Law Enforcement Armed Personnel Positioned on Site.No Gunfire Reported | 12 December 1986 | PNO-III-86-146:on 861212 Unidentified Male Telephoned Bangor,Michigan,Fire Dept & South Haven Tribune Newspaper Threatening to Randomly Shoot at Plant.Law Enforcement Armed Personnel Positioned on Site.No Gunfire Reported | |
| PNO-III-86-049A, on 860519,reactor Trip Occurred Resulting in Multiple Equipment Failures Which Hindered Operator Response Due to Previous Equipment Problems.Augmented Investigation Team Completed Review on 860525 | 27 May 1986 | PNO-III-86-049A:on 860519,reactor Trip Occurred Resulting in Multiple Equipment Failures Which Hindered Operator Response Due to Previous Equipment Problems.Augmented Investigation Team Completed Review on 860525 | |
| PNO-III-86-049, on 860522,Region III Dispatched Augmented Insp Team to Review Circumstances Surrounding 860519 Reactor Trip,Including Equipment Problems Involving Failure of Turbine Bypass & Atmospheric Dump Valves | 22 May 1986 | PNO-III-86-049:on 860522,Region III Dispatched Augmented Insp Team to Review Circumstances Surrounding 860519 Reactor Trip,Including Equipment Problems Involving Failure of Turbine Bypass & Atmospheric Dump Valves | |
| PNO-III-86-035, on 860410,during Reactor Shutdown, Unidentified Leak in Primary Coolant Sys Surpassed One Gpm. Caused by Relief Valve in Letdown Sys Leaking Primary Coolant Into Quench Tank.Addl Leakage Source Investigated | 11 April 1986 | PNO-III-86-035:on 860410,during Reactor Shutdown, Unidentified Leak in Primary Coolant Sys Surpassed One Gpm. Caused by Relief Valve in Letdown Sys Leaking Primary Coolant Into Quench Tank.Addl Leakage Source Investigated | |
| PNO-III-86-019, on 860307,licensee Began Unscheduled 16-day Shutdown to Replace Degraded Seals in Two Primary Coolant Pumps.Repair of Leaking Loop Isolation Check Valve & Pressure Control Valves Also Planned | 10 March 1986 | PNO-III-86-019:on 860307,licensee Began Unscheduled 16-day Shutdown to Replace Degraded Seals in Two Primary Coolant Pumps.Repair of Leaking Loop Isolation Check Valve & Pressure Control Valves Also Planned | |
| PNO-III-85-100, on 851202,licensee Declared Unusual Event Due to Potential Flooding of Plant Site.Approx 150 Ft of Fencing Lost Due to Erosion by Wind & Wave Action.Gravel Used to Stem Further Erosion | 2 December 1985 | PNO-III-85-100:on 851202,licensee Declared Unusual Event Due to Potential Flooding of Plant Site.Approx 150 Ft of Fencing Lost Due to Erosion by Wind & Wave Action.Gravel Used to Stem Further Erosion | |
| PNO-III-85-089, on 851015,RHR Shutdown Cooling Suction Isolation Valve Found Leaking in Excess of Tech Specs.Caused by Failed Valve Packing.Packing & Motor Replaced & Valve Returned to Svc on 851019 | 18 October 1985 | PNO-III-85-089:on 851015,RHR Shutdown Cooling Suction Isolation Valve Found Leaking in Excess of Tech Specs.Caused by Failed Valve Packing.Packing & Motor Replaced & Valve Returned to Svc on 851019 | |
| PNO-III-83-098A, on 831116 Licensee Informed That eddy-current Exam of All Tubes in Both SG Using New High Sensitivity Probe W/Continued Identification of Crack Indications Essentially Completed | 16 November 1983 | PNO-III-83-098A:on 831116 Licensee Informed That eddy-current Exam of All Tubes in Both SG Using New High Sensitivity Probe W/Continued Identification of Crack Indications Essentially Completed | |
| PNO-III-82-065, on 820711,operator Discovered Smoke Emanating from B Cooling Tower Pump Motor & on 820710,A Cooling Tower Pump Taken Out of Svc Due to Bearing Problems.Repairs Expected to Take at Least 30 Days | 12 July 1982 | PNO-III-82-065:on 820711,operator Discovered Smoke Emanating from B Cooling Tower Pump Motor & on 820710,A Cooling Tower Pump Taken Out of Svc Due to Bearing Problems.Repairs Expected to Take at Least 30 Days | |
| ML20217A477 | 30 November 1978 | PNO-78-197:on 781128,plant Was Shutdown to Correct Excessive CRDM Seal Leakage.Most Seals Installed During Refueling Outage Have Been Replaced & Remaining 24 Will Be Replaced During Current Outage.State of Mi Notified | |
| ML20248F174 | 27 June 1978 | PNO-78-126:on 780626,Region III Received Ltr Signed by 49 Palisades Employees Expressing Concern W/Apparent Lack of Care Demonstrated by Plant Mgt Towards Employee Radiation Protection.Region III Initiating Investigation of Matters | |
| ML20249A758 | 3 April 1978 | PNS-78-014:on 780401,threatening Telephone Calls Were Received.Addl Guards Were Brought in to Supplement 10-man Shift on Duty.No Media Inquiries & No Press Release Planned | |
| ML20249B266 | 15 March 1978 | PNO-76-040:on 760314,four Consumers Power Employees Refused to Work at Palisades Nuclear Facility.Future Regional Action Will Be Based on Results of NRC Contracts W/Involved Individuals.No Press Release Will Be Made by NRC | |
| ML20249A820 | 15 February 1978 | PNS-78-005A:on 780214,resident Inspector for Plant Notified Region III of Receipt of Anonymous Telephone Call Re Loss of Security Officer Weapon at Palisades.Region Established That Revolver W/Ammunition Lost by Guard on 780205 | Stolen |
| ML20249A808 | 25 January 1978 | PNS-78-005:on 780101,Region III Received Ltr from Auxiliary Operator at Palisades Who Expressed Concern About High Rate of Turnover on Part of Security Guards.Allegations Made Re Irregularities Re Weapons Qualifications | |
| ML20151X610 | 26 September 1977 | PNO-77-170:on 770924,loss of Offsite Power Occurred When Lightening Struck in Switch Yard.Dgs Started Automatically & Provided Power to Safety Related Equipment.Power Was Restored Same Day | |
| ML20236E916 | 19 July 1977 | PNS-77-028:770717,threatening Call Was Received at Site. Michigan State Police & Sheriff Ofcs of Van Buren & Berrien Counties Were Notified.No Unusual Activities or Incidents Were Noted at Site | |
| ML20236M152 | 1 February 1977 | PNO-77-017:on 770201,Palisades Reported Heavy Icing of Transmission Lines & Towers from Cooling Tower Vapor Drift. Resident Inspector Communicated Matter to NRR | |
| ML20236X018 | 4 December 1975 | PN-75-143:on 751202,threat of Sabotage to Plant Made by Resident of South Haven,Michigan.Investigation Revealed That Individual Who Made Threat Mental Patient & Does Not Pose Direct Threat to Facility.No Press Release Made | |
| ML20236U537 | 23 July 1975 | PN-75-054:on 750722,on Site Inspector Was Informed of Release of Liquid Waste That Contained Concentration of Radioactive Matl in Excess of Limit Listed in Ts.Resident Inspector Was at Site.Licensee Plans to Issue Press Release |