Category:PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO
MONTHYEARPNO-III-99-001, on 990105,Unit 1 Station Auxiliary Transformer Exploded Ignited Oil Fire.Fire Extinguished within 15 Minutes by Onsite Fire Brigade.Unit 2 Operating at 60 Percent Power,Was Not Affected by Explosion & Fire1999-01-0606 January 1999 PNO-III-99-001:on 990105,Unit 1 Station Auxiliary Transformer Exploded Ignited Oil Fire.Fire Extinguished within 15 Minutes by Onsite Fire Brigade.Unit 2 Operating at 60 Percent Power,Was Not Affected by Explosion & Fire PNO-III-98-051, on 981029,Prairie Island Unit 1 Automatically Tripped from 100 Percent Power Due to Negative Flux Rate Reactor Flux Rate Trip Signal.Nrc Resident Inspectors Are Monitoring Licensee Investigation & Repair Activities1998-11-0202 November 1998 PNO-III-98-051:on 981029,Prairie Island Unit 1 Automatically Tripped from 100 Percent Power Due to Negative Flux Rate Reactor Flux Rate Trip Signal.Nrc Resident Inspectors Are Monitoring Licensee Investigation & Repair Activities PNO-III-98-032, on 980605,unit 1 Experienced Automatic Reactor Trip When Control Rod Dropped Into Reactor Core. Caused by Blown Fuse on Stationary Gripper Coil Due to Ground in Wiring to Coil1998-06-0909 June 1998 PNO-III-98-032:on 980605,unit 1 Experienced Automatic Reactor Trip When Control Rod Dropped Into Reactor Core. Caused by Blown Fuse on Stationary Gripper Coil Due to Ground in Wiring to Coil PNO-III-98-011A, on 980124,licensee Shut Down Unit 2 to Investigate Reactor Coolant Leak Associated with Control Rod Drive Mechanism G-9.Licensee Identified Source of Leak as 3/4 Inch through-wall Crack in Manufacturing Weld1998-02-13013 February 1998 PNO-III-98-011A:on 980124,licensee Shut Down Unit 2 to Investigate Reactor Coolant Leak Associated with Control Rod Drive Mechanism G-9.Licensee Identified Source of Leak as 3/4 Inch through-wall Crack in Manufacturing Weld PNO-III-98-011, on 980123,unidentified Leakage Increased by Approx 10 to 0.2 Gallons Per Minute.Licensee Began Preparations to Shut Down & Repair Leak in Canopy Seal1998-01-26026 January 1998 PNO-III-98-011:on 980123,unidentified Leakage Increased by Approx 10 to 0.2 Gallons Per Minute.Licensee Began Preparations to Shut Down & Repair Leak in Canopy Seal PNO-III-97-053, on 970602,Unit 1 Experienced Automatic Reactor Trip from 100% Power,Due to Electrical Failure in One of Three Control Rod Control Cabinets.All Safety Sys Functioned as Designed & Reactor Stabilized in Hot Shutdown1997-06-0404 June 1997 PNO-III-97-053:on 970602,Unit 1 Experienced Automatic Reactor Trip from 100% Power,Due to Electrical Failure in One of Three Control Rod Control Cabinets.All Safety Sys Functioned as Designed & Reactor Stabilized in Hot Shutdown PNO-III-97-047, on 970516,WI Energy Co & Northern States Power Co Announced They Were Terminating Plans for Proposed Merger of Two Companies Into New Co,Primergy Corp.Two Utils Issued News Releases on Decision1997-05-19019 May 1997 PNO-III-97-047:on 970516,WI Energy Co & Northern States Power Co Announced They Were Terminating Plans for Proposed Merger of Two Companies Into New Co,Primergy Corp.Two Utils Issued News Releases on Decision PNO-III-88-091, on 881108,facility Shut Down for Condenser Repairs.Repair Work Includes Leak in Steam Line Inside Condenser Identified on 881103 & Condenser Tube Leak Observed on 8811061988-11-0808 November 1988 PNO-III-88-091:on 881108,facility Shut Down for Condenser Repairs.Repair Work Includes Leak in Steam Line Inside Condenser Identified on 881103 & Condenser Tube Leak Observed on 881106 PNO-III-88-020, on 880310,sample Results from Unit 1 Sump Indicated Small Amount of Reactor Coolant Leakage Showing Measurements of Less than 0.1 Gpm.Visual Insp Revealed Misting in Reactor Head.Region III Monitoring Situation1988-03-11011 March 1988 PNO-III-88-020:on 880310,sample Results from Unit 1 Sump Indicated Small Amount of Reactor Coolant Leakage Showing Measurements of Less than 0.1 Gpm.Visual Insp Revealed Misting in Reactor Head.Region III Monitoring Situation 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-86-139, on 861129,licensee Received Offsite Call at Station Switchboard from Unidentified Male Indicating That Bomb Planted in Reactor Would Go Off in 5 Minutes.Station Search Initiated.No Bomb Found1986-12-0101 December 1986 PNO-III-86-139:on 861129,licensee Received Offsite Call at Station Switchboard from Unidentified Male Indicating That Bomb Planted in Reactor Would Go Off in 5 Minutes.Station Search Initiated.No Bomb Found PNO-III-85-082, on 850917,bomb Threat Received.No Suspects Found.Threat Considered Hoax & No Plant Search Taken1985-09-18018 September 1985 PNO-III-85-082:on 850917,bomb Threat Received.No Suspects Found.Threat Considered Hoax & No Plant Search Taken PNO-III-85-079, on 850907,unidentified Man Telephoned Threat That Bombs Planted Down River from Plant.Police Found No Bomb.Threat Considered Hoax by Licensee.State of Mn Will Be Informed1985-09-0909 September 1985 PNO-III-85-079:on 850907,unidentified Man Telephoned Threat That Bombs Planted Down River from Plant.Police Found No Bomb.Threat Considered Hoax by Licensee.State of Mn Will Be Informed PNO-III-80-170, on 800904,efforts to Remove Bolts from Steam Generator Upper Supports Resulted in Breaking Two Bolts. Ultrasonic Examination of All of Bolts Identified Addl Defects.Cause Could Be Stress Corrosion Cracking1980-09-0505 September 1980 PNO-III-80-170:on 800904,efforts to Remove Bolts from Steam Generator Upper Supports Resulted in Breaking Two Bolts. Ultrasonic Examination of All of Bolts Identified Addl Defects.Cause Could Be Stress Corrosion Cracking ML20126B7301980-02-19019 February 1980 PNS-III-80-003:on 800218,bomb Threat Was Received by Switchboard Operator.Search Conducted W/Negative Results ML20151X8351977-09-22022 September 1977 PNO-77-165:as of 770921,approx 675 Tubes Were Examined in C SG & Results Indicated That as Many as 100 Tubes in SG Might Have to Be Removed from Svc Due to Thinning of Tube Wall in Area Where Old anti-vibration Bars Left in Place ML20236J7351976-07-26026 July 1976 PNS-76-034:on 760724,group of 18 Marchers Called Walk for Disarmament & Social Justice Attempted to Enter Prairie Island Plant Site.Licensee Stopped Marchers at Company Property Line.Three Marchers Arrested for Trespassing ML20249B1831976-03-26026 March 1976 PNO-76-052:on 760325,representative of St Paul Minnesota Area OSHA Office Received Telcon from Pipefitter Employed by Piping Contractor Working at Plant,To Complain About Rate Permissible Quarterly Radiation Exposure Begin Accumulated ML20236V3731975-08-28028 August 1975 PN-75-078:on 750827,unplanned Radioactive Liquid Release from Turbine Bldg Sump to Discharge Cooling Canal.Samples of Canal Water & River Water Upstream & Downstream Confirmed Only Background Activity Existed.Follow Up in Progress 1999-01-06
[Table view] Category:TEXT-INSPECTION & AUDIT & I&E CIRCULARS
MONTHYEARIR 05000282/19990141999-10-19019 October 1999 Insp Repts 50-282/99-14 & 50-306/99-14 on 990920-22. Violations Noted.Major Areas Inspected:Heat Sink Performance IR 05000282/19990121999-10-0606 October 1999 Insp Repts 50-282/99-12 & 50-306/99-12 on 990823-0917.No Violations Noted.Major Areas Inspected:Methods Used for Identification,Cause Investigation & Correction of Quality Related Problems IR 05000282/19990071999-09-28028 September 1999 Insp Repts 50-282/99-07 & 50-306/99-07 on 990721-0831. Non-cited Violations Noted.Major Areas Inspected:Followup Y2K Readiness Review IR 05000282/19990101999-09-10010 September 1999 Insp Repts 50-282/99-10 & 50-306/99-10 on 990809-12. Non-cited Violations Noted.Major Areas Inspected:Physical Protection Cornerstone,Within Safeguards Strategic Assessment Area IR 05000282/19990111999-09-0909 September 1999 Insp Repts 50-282/99-11 & 50-306/99-11 on 990816-20.NCV Noted.Major Areas Inspected:Public Radiation Safety & Included Review of Performance Indicators for Occupational & Public Radiation Safety IR 05000282/19990091999-08-17017 August 1999 Insp Repts 50-282/99-09 & 50-306/99-09 on 990719-22. Violations Noted.Major Areas Inspected:Reactor Safety, Emergency Preparedness & Review of Performance Indicators for Reactor Safety & Emergency Preparedness IR 05000282/19990061999-08-12012 August 1999 Insp Repts 50-282/99-06 & 50-306/99-06 on 990601-0720.One NCV Occurred.Major Areas Inspected:Activities Related to Reactor Safety,Verification of Performance Indicators,Event Followup & Compliance with Commission Rules & Regulations IR 05000282/19993011999-07-0202 July 1999 NRC Operator Licensing Exam Repts 50-282/99-301(OL) & 50-306/99-301(OL) (Including Completed & Graded Tests) for Tests Administered During Week of 990517-21.Two Applicants Passed All Sections of Exam & Were Issued Licenses IR 05000282/19990041999-06-30030 June 1999 Insp Repts 50-282/99-04 & 50-306/99-04 on 990407-0531. Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support IR 05000282/19990051999-05-25025 May 1999 Insp Repts 50-282/99-05 & 50-306/99-05 on 990426-30.No Violations Noted.Major Areas Inspected:Review of Licensee Radiation Protection Performance During Unit 1 Refueling Outage,Shutdown Chemistry & Crud Burst IR 05000282/19990021999-05-0404 May 1999 Insp Repts 50-282/99-02 & 50-306/99-02 on 990226-0406.No Violations Noted.Major Areas Inspected:Aspects of Licensee Operations,Maint,Engineering & Plant Support IR 07200010/19990011999-04-29029 April 1999 Insp Rept 72-0010/99-01 on 990308-0413.No Violations Noted. Major Areas Inspected:Direct Observation of Various Portions of Loading of Eighth & Ninth Dry Fuel Storage Casks from SFP to ISFSI Located Away from Main Protected Area of Site IR 05000282/19990031999-04-16016 April 1999 Insp Repts 50-282/99-03 & 50-306/99-03 on 990322-26.No Violations Noted.Major Areas Inspected:Physical Security Program IR 05000282/19990011999-03-18018 March 1999 Insp Repts 50-282/99-01 & 50-306/99-01 on 990115-0225.No Violations Noted:Licensee Operations,Maint,Engineering & Plant Support IR 05000282/19980231999-01-29029 January 1999 Insp Repts 50-282/98-23 & 50-306/98-23 on 981204-990114.No Violations Noted.Major Areas Inspected:Operations, Maintenance,Engineering & Plant Support PNO-III-99-001, on 990105,Unit 1 Station Auxiliary Transformer Exploded Ignited Oil Fire.Fire Extinguished within 15 Minutes by Onsite Fire Brigade.Unit 2 Operating at 60 Percent Power,Was Not Affected by Explosion & Fire1999-01-0606 January 1999 PNO-III-99-001:on 990105,Unit 1 Station Auxiliary Transformer Exploded Ignited Oil Fire.Fire Extinguished within 15 Minutes by Onsite Fire Brigade.Unit 2 Operating at 60 Percent Power,Was Not Affected by Explosion & Fire IR 05000282/19980201998-12-18018 December 1998 Insp Repts 50-282/98-20 & 50-306/98-20 on 981023-1203.No Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support IR 05000306/19980211998-12-17017 December 1998 Insp Rept 50-306/98-21 on 981116-24.No Violations Noted. Major Areas Inspected:Review of Implementation of Inservice Insp Program for Plant Refueling Outage Cycle 19 IR 05000282/19980221998-12-0101 December 1998 Insp Repts 50-282/98-22 & 50-306/98-22 on 981116-20.No Violations Noted.Major Areas Inspected:Licensee Radiation Protection Performance During Unit 2 Refueling Outage IR 05000282/19980181998-11-18018 November 1998 Insp Repts 50-282/98-18 & 50-306/98-18 on 980911-1022.No Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support PNO-III-98-051, on 981029,Prairie Island Unit 1 Automatically Tripped from 100 Percent Power Due to Negative Flux Rate Reactor Flux Rate Trip Signal.Nrc Resident Inspectors Are Monitoring Licensee Investigation & Repair Activities1998-11-0202 November 1998 PNO-III-98-051:on 981029,Prairie Island Unit 1 Automatically Tripped from 100 Percent Power Due to Negative Flux Rate Reactor Flux Rate Trip Signal.Nrc Resident Inspectors Are Monitoring Licensee Investigation & Repair Activities IR 05000282/19980191998-10-29029 October 1998 Insp Repts 50-282/98-19 & 50-306/98-19 on 981013-16.No Violations Noted.Major Areas Inspected:Review of Chemistry Program Re Plant Water Quality & Analytical Capabilities IR 05000282/19980151998-10-0909 October 1998 Insp Repts 50-282/98-15 & 50-306/98-15 on 980731-0910. Violations Noted.Major Areas Inspected:Operations,Maint & Engineering ML20154M0691998-10-0909 October 1998 Notice of Violation from Insp on 980731-0910.Violation Noted:On 980901,maint Workers Failed to Follow Procedural Requirements,Of Sp 1180.2,Rev 8,Steps 7 & 8,when Workers Did Not Gain Access to Both Sides of Filter Bank ML20154J9881998-10-0909 October 1998 Insp Repts 50-282/98-16 & 50-306/99-16 on 980810-28. Apparent Violations Being Considered for Escalated Ea.Major Areas Inspected:Review of Fire Protection Project self- Assessment IR 05000282/19980131998-08-21021 August 1998 Insp Repts 50-282/98-13 & 50-306/98-13 on 980727-31.No Violations Noted.Major Areas Inspected:Review of Physical Security Program IR 05000282/19980091998-08-19019 August 1998 Insp Repts 50-282/98-09 & 50-306/98-09 on 980619-0730.No Violations Noted.Major Areas Inspected:Operations, Maintenance,Engineering & Plant Support IR 05000282/19980121998-08-14014 August 1998 Insp Repts 50-282/98-12 & 50-306/98-12 on 980720-24.No Violations Noted.Major Areas Inspected:Evaluation of Licensee Performance During Plant Biennial Exercise of Emergency Plan IR 05000282/19980141998-08-11011 August 1998 Insp Repts 50-282/98-14 & 50-306/98-14 on 980720-24.No Violations Noted.Major Areas Inspected:Review of Pcp,Storage & Processing of Solid Radwaste & Shipment & Disposal of Radioactive Matl ML20236N9941998-07-10010 July 1998 Notice of Violation from Insp on 980605-12.Violation Noted: on 980605,emergency Operating Procedure 1ES-0.1,rev 13 Lacked Adequate Guidance for Dumping Steam Using SG Power Operated Relief Valves W/Ms Isolation Valves Closed ML20236P0111998-07-10010 July 1998 Insp Repts 50-282/98-10 & 50-306/98-10 on 980605-12. Violations Noted.Major Areas inspected:on-site Insp Into Circumstances Surrounding Unit 1 Rt Due to Dropped CR & Actions Taken for Recovery to Safe Shutdown on 980605 ML20236G9011998-06-28028 June 1998 Insp Repts 50-282/98-08 & 50-306/98-08 on 980512-0618.No Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support PNO-III-98-032, on 980605,unit 1 Experienced Automatic Reactor Trip When Control Rod Dropped Into Reactor Core. Caused by Blown Fuse on Stationary Gripper Coil Due to Ground in Wiring to Coil1998-06-0909 June 1998 PNO-III-98-032:on 980605,unit 1 Experienced Automatic Reactor Trip When Control Rod Dropped Into Reactor Core. Caused by Blown Fuse on Stationary Gripper Coil Due to Ground in Wiring to Coil IR 05000282/19980071998-06-0505 June 1998 Insp Repts 50-282/98-07 & 50-306/98-07 on 980329-0511. Violations Noted.Major Areas Inspected:Licensee Operations, Maint,Engineering & Plant Support ML20248M1341998-06-0505 June 1998 Notice of Violation from Insp on 980329-0511.Violation Noted:Licensee Identified & Took Corrective Actions of Concerns W/Potential Effects of Flooding from Feedwater Line Break on Ability of Main Isolation Valves to Close ML20248J4971998-06-0404 June 1998 Notice of Violation from Investigation Rept 3-97-034, Completed on 980211.Violation Noted:Suppl 2,dtd 970212,to License Amend Request,Dtd 970129, Amend of Cooling Water Sys Emergency Intake Design Basis, Was Not Complete IR 05000282/19980061998-05-26026 May 1998 Insp Repts 50-282/98-06 & 50-306/98-06 on 980330-0409.No Violations Noted.Major Areas Inspected:Conduct of Operations Which Included Continuous 72 H Period of Control Room Observation ML20248B3061998-05-26026 May 1998 Notice of Violation from Insp on 980330-0409.Violation Noted:On 980401,inspectors Observed Plant Operator Hang Secure Tag Associated W/Wo 9801216 on Number 21 Safety Injection Pump Motor Control Ctr W/O Performing Dead Test IR 05000282/19980011998-05-0101 May 1998 SALP Repts 50-282/98-01 & 50-306/98-01 for 960218-980328 IR 05000282/19980051998-04-0606 April 1998 Insp Repts 50-282/98-05 & 50-306/98-05 on 980225-0328.No Violations Noted.Major Areas Inspected:Licensee Operations, Maint & Engineering IR 05000282/19980041998-04-0101 April 1998 Insp Repts 50-282/98-04 & 50-306/98-04 on 980210-13 & 0316-20.No Violations Noted.Major Areas Inspected:Rp Performance During Unit 1 Refueling Outage & Unit 2 Forced Outage,Calibration of Radiation Monitoring Sys ML20216E4841998-03-12012 March 1998 Insp Repts 50-282/98-03 & 50-306/98-03 on 980114-0224. Violations Noted.Major Areas Inspected:Licensee Operations, Maint,Engineering & Plant Support ML20216E4621998-03-12012 March 1998 Notice of Violation from Insp on 980114-0224.Violation Noted:On 980121,instructions in Work Order 9800310, Isolate Breaker 1H3, Were Not Appropriate to Circumstances Because Loss of Offsite Power Source to Unit 2 Occurred PNO-III-98-011A, on 980124,licensee Shut Down Unit 2 to Investigate Reactor Coolant Leak Associated with Control Rod Drive Mechanism G-9.Licensee Identified Source of Leak as 3/4 Inch through-wall Crack in Manufacturing Weld1998-02-13013 February 1998 PNO-III-98-011A:on 980124,licensee Shut Down Unit 2 to Investigate Reactor Coolant Leak Associated with Control Rod Drive Mechanism G-9.Licensee Identified Source of Leak as 3/4 Inch through-wall Crack in Manufacturing Weld ML20202C0451998-01-30030 January 1998 Notice of Violation from Insp on 971203-980113.Violation Noted:On 971210,Maint Procedure D32,Rev 6,was Not Allowed for Unit 1 When RO & Nuclear Engineer Coordinating Procedure on Two Occasions,Failed to Do Five Degree Cooldown & Heatup ML20202C0581998-01-30030 January 1998 Insp Repts 50-282/97-23 & 50-306/97-23 on 971203-980113. Violations Noted.Major Areas Inspected:Licensee Operations, Maint,Engineering & Plant Support PNO-III-98-011, on 980123,unidentified Leakage Increased by Approx 10 to 0.2 Gallons Per Minute.Licensee Began Preparations to Shut Down & Repair Leak in Canopy Seal1998-01-26026 January 1998 PNO-III-98-011:on 980123,unidentified Leakage Increased by Approx 10 to 0.2 Gallons Per Minute.Licensee Began Preparations to Shut Down & Repair Leak in Canopy Seal ML20198A4171997-12-23023 December 1997 Notice of Violation from Insp on 970929-1003.Violations Noted:On 960724,licensee Implemented Procedure Swi O-10, Operations Manual Usage, Rev 28,section 6.11.9,which Contained Inadequate Instructions ML20198A4441997-12-23023 December 1997 Insp Repts 50-282/97-19 & 50-306/97-19 on 970929-1003,21-23 & 1202.Violations Noted.Major Areas Inspected:Licensed Reactor Operator & SRO Requalification Training Program IR 05000282/19970211997-12-15015 December 1997 Insp Repts 50-282/97-21 & 50-306/97-21 on 971022-1202.No Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support 1999-09-09
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