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
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| ML20155D746 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 04/11/1986 |
| From: | Burgess B, Guldemond W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| References | |
| PNO-III-86-035, PNO-III-86-35, NUDOCS 8604170418 | |
| Download: ML20155D746 (1) | |
Similar Documents at Palisades | |
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Category:PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO
MONTHYEARPNO-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 Notified1999-10-14014 October 1999
[Table view]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 Underway1993-09-24024 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 Informed1993-08-31031 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 Event1993-07-0101 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 9305071993-05-0404 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 Tubes1989-02-0101 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 Plant1987-11-12012 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 Pump1987-10-16016 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 Yrs1987-10-0707 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 Investigation1987-07-15015 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 Plant1987-07-14014 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 Leak1987-07-10010 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 Valve1987-06-22022 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 Plants1987-06-11011 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 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 Repaired1987-04-13013 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 Bearing1987-04-10010 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 Instrument1987-04-0303 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 8704011987-03-30030 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 Preparation1987-03-27027 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 Reported1986-12-12012 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 8605251986-05-27027 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 Valves1986-05-22022 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 Investigated1986-04-11011 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 Planned1986-03-10010 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 Erosion1985-12-0202 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 8510191985-10-18018 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 Completed1983-11-16016 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 Days1982-07-12012 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 ML20217A4771978-11-30030 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 ML20248F1741978-06-27027 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 ML20249A7581978-04-0303 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 ML20249B2661978-03-15015 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 ML20249A8201978-02-15015 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 ML20249A8081978-01-25025 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 ML20151X6101977-09-26026 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 ML20236E9161977-07-19019 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 ML20236M1521977-02-0101 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 ML20236X0181975-12-0404 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 ML20236U5371975-07-23023 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 1999-10-14 Category:TEXT-INSPECTION & AUDIT & I&E CIRCULARS MONTHYEARPNO-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 Notified1999-10-14014 October 1999
[Table view]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 IR 05000255/19980081998-05-28028 May 1998 Partially Withheld Insp Rept 50-255/98-08 on 980504-08 (Ref 10CFR73.71).No Violations Noted.Major Areas Inspected: Effectiveness of Access Control Functions & Testing & Maint Activities Related to Security Equipment ML20217K5821998-04-0202 April 1998 Notice of Violation & Proposed Imposition of Civil Penalty in Amount of $55,000.Violation Noted:On 971017,shift Supervisor Failed to Ensure That Equipment Could Be Removed from Svc,By Failing to Ensure That TS Requirements Were Met IR 05000255/19970071997-06-0505 June 1997 Partially Deleted Insp Rept 50-255/97-07 on 970428-0513. Violations Noted.Major Areas Inspected:Mgt Support,Plant Support,Detection Equipment & Evaluation of Security Communication Activities IR 05000255/19960011997-01-24024 January 1997 SALP Rept 50-255/96-01 for Period from 950528-961123 ML20132F8881996-10-18018 October 1996 Notice of Violation from Insp on 960727-0906.Violation Noted:On 960820,electrical Maint Technician Operated Supply Ventilation Fan to EDG 1-2 Room W/O Proper Authorization of Shift Supervisor ML20059C1281993-12-23023 December 1993 Notice of Violation from Insp on 931018-1103.Violation noted:930917 Primary Coolant Sys Temp Between 170 Degrees & 250 Degrees F,Average Cooldown Was Approx 48 Degrees F Per Hour IR 05000255/19930301993-12-21021 December 1993 Insp Rept 50-255/93-30 on 931203.Violations Noted.Major Areas Inspected:Previous Violations Were Reviewed IR 05000255/19930011993-12-0101 December 1993 SALP 12 Rept 50-255/93-01 for 920401-931030 IR 05000255/19930281993-11-19019 November 1993 Insp Rept 50-255/93-28 on 931018-1103.Apparent Violations Being Considered for Escalated Enforcement Action.Major Areas Inspected:Excessive Cooldown Following Identification of Nonisolable thru-wall Leak on Primary Coolant Sys IR 05000255/19930271993-11-16016 November 1993 Insp Rept 50-255/93-27 on 931025-28.No Violations Noted. Major Areas Inspected:Emergency Preparedness Exercise ML20059G2071993-10-25025 October 1993 Notice of Violation from Insp on 930819-0929.Violation Noted:Licensee Cycle 10 Radiochemistry Testing Did Not Positively Identify Failed I-series Fuel IR 05000255/19930201993-10-25025 October 1993 Insp Rept 50-255/93-20 on 930819-0929.Violations Noted.Major Areas Inspected:Licensee Activities Re Summer 1993 Refueling Outage Problems & Plant Restart Preparations IR 05000255/19930251993-10-21021 October 1993 Insp Rept 50-255/93-25 on 931005 & 06.No Violations of NRC fitness-for-duty Noted.Major Areas Inspected:Review of fitness-for-duty Concern Relating to Implementation of Testing for-cause & follow-up of Random Testing Program 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 Underway1993-09-24024 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 ML20057B8581993-09-16016 September 1993 Exam Rept 50-255/OL-93-02 on 930914.Exam Results: Requalification Written Retake Exam Was Administered to One RO ML20149D3601993-09-14014 September 1993 Notice of Violation & Proposed Imposition of Civil Penalty in Amount of $50,000.Noncompliance Noted:Shift Supervisor Failed to Explain Plans,Procedures & Safety Precautions to Auxiliary Operators Assigned to Perform CRDM mock-up ML20057A1731993-09-0707 September 1993 Insp Rept 50-255/93-05 on 930614-17 & 29,0701 & 20-21 & 0803-04.No Violations or Deviations Noted.Major Areas Inspected:Isi Activities Including Review of Program, Procedures & Observation of Work Activities 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 Informed1993-08-31031 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 IR 05000255/19930181993-08-31031 August 1993 Augmented Insp Team Rept 50-255/93-18 on 930708-20.No Violations Noted.Major Areas Inspected:Review of Validation of Sequence of Events & Licensee Corrective Actions IR 05000255/19930051993-07-30030 July 1993 Insp Rept 50-255/93-05 on Stated Date.No Violations Noted. Major Areas Inspected:Independent NDE of Components & Welds in Order to Ascertain Accuracy of NDE Performed by Licensee 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 Event1993-07-0101 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 9305071993-05-0404 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 IR 05000255/19930021993-02-17017 February 1993 Insp Rept 50-255/93-02 on 921229-930208.No Violations Noted. Major Areas Inspected:Previously Identified Items, Operational Safety Verification,Maint,Surveillance & Design Changes ML20127M7821993-01-21021 January 1993 Notice of Violation from Insp on 921207-18.Violation Noted: Inservice Test Procedure QO-8B Contained Inadequate Acceptance Criteria to Verify That Listed Check Valves Exercised Full Open Position IR 05000255/19920281993-01-21021 January 1993 Insp Rept 50-255/92-28 on 921207-18.Violations Noted.Major Areas Inspected:Licensee Program on Check Valves,Self Assessment & Incorporation of GL 89-04, Guidance on Developing Acceptable Inservice Test Programs IR 05000255/19920271993-01-13013 January 1993 Insp Rept 50-255/92-27 on 921117-1228.No Violations Noted. Major Areas Inspected:Operational Safety Verification, Engineering & Technical Support,Maintenance,Surveillance & Quality Control Activities IR 05000255/19920231992-11-25025 November 1992 Insp Rept 50-255/92-23 on 921006-1116.Noncited Violations or Deviations Noted.Major Areas Inspected:Operational Safety Verification,Reactor Trip,Maint Surveillance,Quarterly Mgt Meeting & Dry Cask Storage Project Insps IR 05000155/19900201990-11-0707 November 1990 Insp Repts 50-155/90-20 & 50-255/90-27 on 900925-28 & 1015-19.Violations Noted.Major Areas inspected:fitness-for- Duty & Corrective Actions for Audit Findings IR 05000255/19900161990-07-0606 July 1990 Insp Rept 50-255/90-16 on 900618-22 & 25.No Violations Noted.Major Areas Inspected:Mgt Support,Protected & Vital Areas,Detection & Assessment Aids,Package & Vehicle Access, Compensatory Measures & Training & Qualification IR 05000255/19890111989-05-0101 May 1989 Partially Withheld Physical Security Insp Rept 50-255/89-11 on 890410-14 (Ref 10CFR73.21).Violations Noted.Major Areas Inspected:Mgt Support,Protected & Vital Area Barriers & Access Control,Including Personnel,Packages & Vehicles 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 Tubes1989-02-0101 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 IR 05000255/19880131988-05-24024 May 1988 Partially Withheld Insp Rept 50-255/88-13 on 880502-05 (Ref 10CFR73.21).Major Areas Inspected:Security Plan/ Implementing Procedures,Mgt Effectiveness,Security Organization,Testing & Maint & Security Sys Power Supply IR 05000255/19880091988-04-27027 April 1988 Insp Rept 50-255/88-09 on 880411-15.No Violations or Deviations Noted.Major Areas Inspected:Activation of Emergency Plan,Licensee Action on Previously Identified Items & Changes to Emergency Preparedness Program 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 Plant1987-11-12012 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 Pump1987-10-16016 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 Yrs1987-10-0707 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 Investigation1987-07-15015 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 Plant1987-07-14014 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 Leak1987-07-10010 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 IR 05000255/19870161987-07-0808 July 1987 Insp Rept 50-255/87-16 on 870608-12.No Violations Noted. Major Areas Inspected:Confirmatory Measurements Program Including Comparison of Licensee Analyses W/Region III Mobile Lab,Radiological Environ Program & Open Item 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 Valve1987-06-22022 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 Plants1987-06-11011 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 ML20214T9121987-06-0404 June 1987 Exam Rept 50-255/OL-87-01 on 870504-08.Exam Results:Both Senior Operator Candidates Passed.Exam & Answer Key Encl ML20214U3261987-06-0404 June 1987 Requalification Exam Rept 50-255/OL-87-02 of Exam Admininstered on 870505-08.Exam Results:Five Senior Operators & Four Operators Passed Exams IR 05000255/19860351987-05-28028 May 1987 Insp Rept 50-255/86-35 on 861216-870216.Violations Noted: Inadequate Review of Mod Package,Inadequate Procedures for Conduct of 10CFR50.59 Evaluations & Failure to Identify Modified Breakers as Class 1E IR 05000255/19870071987-04-20020 April 1987 Partially Withheld Insp Rept 50-255/87-07 on 870320-30 (Ref 10CFR73.21).No Violations Noted.Major Areas Inspected: Licensee Actions Re Opening of Physical Barrier,Security Plan & Implementing Procedures & IE Info Notice 86-083 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 Repaired1987-04-13013 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 Bearing1987-04-10010 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 Instrument1987-04-0303 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 1999-10-14 |
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PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-III-l,6-35 Date April 11, 1986 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety cr public interest significance. The information is as initially received without v:rification or evaluation, and is basically all that is known by the Region III h. g staff on this date.
Facility: Consumers Power Company Licensee Emergency Classification:
Palisades Nuclear Generating Plant XX Notification of an Unusual Event Covert, MI 49043 Alert Site Area Emergency Docket No: 50-255 General Emergency Not Applicable Subj:ct: UNIDENTIFIED LEAKAGE OF PRIMARY COOLANT; PLANT SHUT D0WN At 4:52 a.m., April 10, 1986, the licensee began shutting down the reactor when an unid:ntified leak in the primary coolant system surpassed one gallon per minute, the t:chnical specification limit for unidentified leakage. (The unit reached hot shutdown at 1:56 p.m., April 10.) ,
The licensee's investigation determined that a relief valve in the letdown system was lcaking primary coolant into the quench tank. This additional liquid was not immediately id:ntified because the leakage did not raise the quench tank level, but was vented to a drain through a mislabeled, mispositioned valve. Additional unidentified leakage exists in the letdown system to the quench tank, but the leakage rate is now within tech spec limits.
(Min:r leakage of .01 gpm was found near the control rod drive mechanisms.)
The unit will remain in hot shutdown while the licensee continues searching for the source cf th remaining unidentified leakage. The Unusual Event classification was terminated at 11:10 p.m., April 10, 1986.
The R:sident Inspectors are following the licensee's course of action.
Tha State of Michigan will be notified.
R:gion III (Chicago) was first informed of this event at 8 a.m., (CST) April 10, 1986.
Updated information was received at 8 a.m. ST),Apr 1, 1986. This information is current as of 11:45 a.m., April 11, 19 /
CONTACT: B. . eo FTS 388-5689 FTS 388-5574 DISTRIBUTION:
H. St. ED0 NRR E/W Willste Mail: ADM:DMB Chairman Palladino PA IE NMSS D0T:Trans only Comm. Zech ELD OIA RES Comm. Bernthal AE0D Comm. Roberts Comm. Asselstine SP M. Regional Offices ACRS SECY INP0c2'57 NSACc2 N CA RIII Resident Offig PDR Licensee: N6a (Corp. Office - Reactor Lic. Only)
.,, gDR60417o418 860411 I8rE Region III 0 P W III-86-035 PDR Rev. November 1985 T M 'l