PNO-III-86-121, on 861110,preliminary Evaluation by Licensee & Region III Determined Diesel Generator 1B Failure Caused by Improperly Torqued Bolt in Articulated Connecting Rod. Licensee Plans to Examine Remaining Generators
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| ML20213G431 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 11/10/1986 |
| From: | Burgess B, Guldemond W, Muffett J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| References | |
| PNO-III-86-121A, NUDOCS 8611180110 | |
| Download: ML20213G431 (1) | |
Similar Documents at Zion | |
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Category:PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO
MONTHYEARPNO-III-98-030, on 980517,armed Security Guard on Patrol in Owner Controlled Area Reported to Security Person Lying Near Road.Guard Subsequently Reported Being Shot.No Intruder Found.Guard Admitted Shooting Himself in Foot1998-05-18018 May 1998
[Table view]PNO-III-98-030:on 980517,armed Security Guard on Patrol in Owner Controlled Area Reported to Security Person Lying Near Road.Guard Subsequently Reported Being Shot.No Intruder Found.Guard Admitted Shooting Himself in Foot PNO-III-98-006, on 980115,licensee Announced Permanent Shut Down of Station.Util Plans to Maintain Plant in Safstor Decommissioning Mode Until Approx 20141998-01-15015 January 1998 PNO-III-98-006:on 980115,licensee Announced Permanent Shut Down of Station.Util Plans to Maintain Plant in Safstor Decommissioning Mode Until Approx 2014 PNO-III-97-071, on 970903,Comm Ed Announced Series of Mgt Changes & Restructuring of Nuclear Div Organization.New Site Vice Presidents at Braidwood & Quad Cities Former Plant Managers.State of Il Will Be Notified of Mgt Changes1997-09-0303 September 1997 PNO-III-97-071:on 970903,Comm Ed Announced Series of Mgt Changes & Restructuring of Nuclear Div Organization.New Site Vice Presidents at Braidwood & Quad Cities Former Plant Managers.State of Il Will Be Notified of Mgt Changes PNO-III-97-035, on 970417,licensee Informed Zion Station of Results of Operations Assessment of Licensed & non-licensed Operating Staff.Licensee Assessed 187 Employees,Both in Mgt & Bargaining Unit Positions.States of Il & Wi Informed1997-04-18018 April 1997 PNO-III-97-035:on 970417,licensee Informed Zion Station of Results of Operations Assessment of Licensed & non-licensed Operating Staff.Licensee Assessed 187 Employees,Both in Mgt & Bargaining Unit Positions.States of Il & Wi Informed PNO-III-97-034, on 970417,decision Not to Replace SGs Made. as Result of Decision,Comm Ed Stated Zion Station Would Be Shut Down Before Expiration of Operating Licenses in 2013. Util Most Probably Support Operation to 20051997-04-18018 April 1997 PNO-III-97-034:on 970417,decision Not to Replace SGs Made. as Result of Decision,Comm Ed Stated Zion Station Would Be Shut Down Before Expiration of Operating Licenses in 2013. Util Most Probably Support Operation to 2005 PNO-III-97-024, on 970311,Unit 1 Sys Auxiliary Transformer Tripped as Result of Actuation of Sudden Pressure Relay, Indicating Possible Fault in Transformer.Nrc Providing round-the-clock Insp Coverage at Zion1997-03-14014 March 1997 PNO-III-97-024:on 970311,Unit 1 Sys Auxiliary Transformer Tripped as Result of Actuation of Sudden Pressure Relay, Indicating Possible Fault in Transformer.Nrc Providing round-the-clock Insp Coverage at Zion PNO-III-97-010B, on 970221,plant Containment Spray Pump Found to Be Inoperable During Routine Testing.On 970307,AIT Held Exit Meeting W/Licensee.Ait Concluded That Significant Deficiencies in Oversight of Control Room Found1997-03-0707 March 1997 PNO-III-97-010B:on 970221,plant Containment Spray Pump Found to Be Inoperable During Routine Testing.On 970307,AIT Held Exit Meeting W/Licensee.Ait Concluded That Significant Deficiencies in Oversight of Control Room Found PNO-III-97-010A, on 970221,AIT Dispatched to Zion Station to Review Improper Control Rod Movement Occurred,During Reactor Shutdown.Licensee Also Formed Event Investigation Team Led by J Brons,Comm Ed Vice-President Nuclear Support1997-02-26026 February 1997 PNO-III-97-010A:on 970221,AIT Dispatched to Zion Station to Review Improper Control Rod Movement Occurred,During Reactor Shutdown.Licensee Also Formed Event Investigation Team Led by J Brons,Comm Ed Vice-President Nuclear Support PNO-III-97-010, on 970219,diesel-driven CS Pump Found to Be Inoperable During Routine Surveillance Test.Reactor Operator Realized,Rods Were Moved Further than Expected.Actual Safety Significance of Error Minimal1997-02-24024 February 1997 PNO-III-97-010:on 970219,diesel-driven CS Pump Found to Be Inoperable During Routine Surveillance Test.Reactor Operator Realized,Rods Were Moved Further than Expected.Actual Safety Significance of Error Minimal PNO-III-97-003, on 970117,outage Extended to Address Technical & Plant Condition Issues.Actions to Be Completed During Outage Extension Include Submitted Info1997-01-17017 January 1997 PNO-III-97-003:on 970117,outage Extended to Address Technical & Plant Condition Issues.Actions to Be Completed During Outage Extension Include Submitted Info PNO-III-92-048, on 920917,licensee Shut Down Unit 1 Because 1A turbine-driven AF Pump Declared Inoperable & Operability of One of Two 1A SG Injection Lines Considered Questionable. Equipment Debris Found in AF System.Repairs Require 1 Week1992-09-18018 September 1992 PNO-III-92-048:on 920917,licensee Shut Down Unit 1 Because 1A turbine-driven AF Pump Declared Inoperable & Operability of One of Two 1A SG Injection Lines Considered Questionable. Equipment Debris Found in AF System.Repairs Require 1 Week PNO-III-90-061, on 900922,one of Two Main Transformers Exploded,Causing Reactor Trip from 40% Power After Turbine Trip Occurred.Cause Under Investigation.Replacement Transformer Will Be Installed in 3 Wks1990-09-24024 September 1990 PNO-III-90-061:on 900922,one of Two Main Transformers Exploded,Causing Reactor Trip from 40% Power After Turbine Trip Occurred.Cause Under Investigation.Replacement Transformer Will Be Installed in 3 Wks PNO-III-90-053, on 900724,55-year Old Employee of fire-watch Contractor Died of Apparent Heart Attack,While on Duty in Turbine Building1990-07-24024 July 1990 PNO-III-90-053:on 900724,55-year Old Employee of fire-watch Contractor Died of Apparent Heart Attack,While on Duty in Turbine Building ML20212A2591990-03-0606 March 1990 PNO-III-90-14A:on 900306,high Bearing Temperature Resulted in Common EDG for Two Units to Be Declared Inoperable on 900305 PNO-III-89-055, on 890817,security Guard Arrested for Robbery.Guard Site Access Badge Terminated on 890817 After Plant Police Notified Licensee of Planned Interview of Suspect Re Robberies1989-08-18018 August 1989 PNO-III-89-055:on 890817,security Guard Arrested for Robbery.Guard Site Access Badge Terminated on 890817 After Plant Police Notified Licensee of Planned Interview of Suspect Re Robberies PNO-III-89-040, on 890624,power Lost to All Control Room Annunciators for Reactor & safety-related Sys.Caused by Troubleshooting Ground on Electrical Bus for balance-of-plant Annunciators & Blow Fuses1989-06-26026 June 1989 PNO-III-89-040:on 890624,power Lost to All Control Room Annunciators for Reactor & safety-related Sys.Caused by Troubleshooting Ground on Electrical Bus for balance-of-plant Annunciators & Blow Fuses PNO-III-89-033A, on 890508 & 09,gaseous Release Occurred from Coolant Vol Control Sys Mixed Bed Demineralizer 1A Through Floor Drains to Auxiliary Bldg Vent Stack.Region III Monitoring Licensee Investigation1989-05-11011 May 1989 PNO-III-89-033A:on 890508 & 09,gaseous Release Occurred from Coolant Vol Control Sys Mixed Bed Demineralizer 1A Through Floor Drains to Auxiliary Bldg Vent Stack.Region III Monitoring Licensee Investigation PNO-III-89-033, on 890308,high Radiation Alarm Received When Vent & Drain Valves of Coolant Vol Control Sys 1A Mixed Bed Demineralizer Opened.Caused by Use of Erroneous Stack Flow Rate.New Calculations Determined Release Rate within Limits1989-03-0808 March 1989 PNO-III-89-033:on 890308,high Radiation Alarm Received When Vent & Drain Valves of Coolant Vol Control Sys 1A Mixed Bed Demineralizer Opened.Caused by Use of Erroneous Stack Flow Rate.New Calculations Determined Release Rate within Limits PNO-III-88-087, on 881025,licensee Determined That Neither of Two motor-driven Auxiliary Feedwater Pumps Would Automatically Start W/Loss of Offsite Power & lo-lo Steam Generator Level.Pumps Declared Inoperable1988-10-26026 October 1988 PNO-III-88-087:on 881025,licensee Determined That Neither of Two motor-driven Auxiliary Feedwater Pumps Would Automatically Start W/Loss of Offsite Power & lo-lo Steam Generator Level.Pumps Declared Inoperable PNO-III-88-067, on 880722,controlled Shutdown Initiated to Repair Steam Leak.Unit Down for More than 48 H for Steam Leak Repair & Portions of Piping Which Exhibited Wall Thickness of Less than Three Inches.State of Il Notified1988-07-25025 July 1988 PNO-III-88-067:on 880722,controlled Shutdown Initiated to Repair Steam Leak.Unit Down for More than 48 H for Steam Leak Repair & Portions of Piping Which Exhibited Wall Thickness of Less than Three Inches.State of Il Notified PNO-III-87-129, on 871002,facility Shut Down to Repair Packing Leaks on Both Pressurizer Spray Valves.Cause of Packing Leaks Not Stated.Valve Repairs Now Completed & Repair of Position Indicator on One Valve Underway1987-10-0505 October 1987 PNO-III-87-129:on 871002,facility Shut Down to Repair Packing Leaks on Both Pressurizer Spray Valves.Cause of Packing Leaks Not Stated.Valve Repairs Now Completed & Repair of Position Indicator on One Valve Underway 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-87-073, on 870521,personnel Discovered Water Leaking Through Doors on Diesel Fuel Oil Storage Tank Rooms Into Turbine Bldg.Caused by Removal of Wrong Check Valve Bonnet. Water Pumped to Waste Water Treatment Sys for Processing1987-05-22022 May 1987 PNO-III-87-073:on 870521,personnel Discovered Water Leaking Through Doors on Diesel Fuel Oil Storage Tank Rooms Into Turbine Bldg.Caused by Removal of Wrong Check Valve Bonnet. Water Pumped to Waste Water Treatment Sys for Processing PNO-III-87-061, on 870425,generator Shutdown to Reduce Frame Vibrations & Repair Hydrogen Leak Into Stator Water Cooling Sys.Inspectors Monitoring Licensee Activities.Reactor Will Be Kept Critical to Support Generator Balance Runs1987-04-28028 April 1987 PNO-III-87-061:on 870425,generator Shutdown to Reduce Frame Vibrations & Repair Hydrogen Leak Into Stator Water Cooling Sys.Inspectors Monitoring Licensee Activities.Reactor Will Be Kept Critical to Support Generator Balance Runs PNO-III-87-043, on 870327,fire Discovered in Turbine Bldg in Cardboard Box Containing Noncombustible Piping Insulation. Fire Extinguished by Fire Brigade.Fire Probably Caused by Discarded Cigarette1987-03-27027 March 1987 PNO-III-87-043:on 870327,fire Discovered in Turbine Bldg in Cardboard Box Containing Noncombustible Piping Insulation. Fire Extinguished by Fire Brigade.Fire Probably Caused by Discarded Cigarette PNO-III-87-018, on 870130,telegram Addressed to HR Denton Received Carrying Final Warning That Zion Nuclear Plant Shall Be Closed, Unless Info Made Available.Responsible Individual Located by FBI & Agreed to Psychiatric Treatment1987-02-0202 February 1987 PNO-III-87-018:on 870130,telegram Addressed to HR Denton Received Carrying Final Warning That Zion Nuclear Plant Shall Be Closed, Unless Info Made Available.Responsible Individual Located by FBI & Agreed to Psychiatric Treatment PNO-III-86-121, on 861110,preliminary Evaluation by Licensee & Region III Determined Diesel Generator 1B Failure Caused by Improperly Torqued Bolt in Articulated Connecting Rod. Licensee Plans to Examine Remaining Generators1986-11-10010 November 1986 PNO-III-86-121:on 861110,preliminary Evaluation by Licensee & Region III Determined Diesel Generator 1B Failure Caused by Improperly Torqued Bolt in Articulated Connecting Rod. Licensee Plans to Examine Remaining Generators PNO-III-86-110, documents State of Il Concerns Re Viability of Emergency Evacuation Routes for Plant Due to Recent Flooding in Area.Plants Not Affected as Unit 1 Shut Down for Refueling & Unit 2 Operating at 99% Power1986-09-30030 September 1986 PNO-III-86-110:documents State of Il Concerns Re Viability of Emergency Evacuation Routes for Plant Due to Recent Flooding in Area.Plants Not Affected as Unit 1 Shut Down for Refueling & Unit 2 Operating at 99% Power PNO-III-86-098, on 860911,small Unplanned Release of Radioactive Noble Gas Detected in Auxiliary Bldg & Control Room.Caused by Malfunctioning Level Indicator on Spent Resin Storage Tank.Gas Cleared by Ventilation Sys1986-09-15015 September 1986 PNO-III-86-098:on 860911,small Unplanned Release of Radioactive Noble Gas Detected in Auxiliary Bldg & Control Room.Caused by Malfunctioning Level Indicator on Spent Resin Storage Tank.Gas Cleared by Ventilation Sys PNO-III-86-064, on 860705,svc Water Pump 1B Failed.Apparently Due to Failure of Pump Shaft,Lower Bearing or Lower Impeller.Unit Placed in Hot Shutdown.Approx 7 Days Needed to Repair Pump1986-07-0707 July 1986 PNO-III-86-064:on 860705,svc Water Pump 1B Failed.Apparently Due to Failure of Pump Shaft,Lower Bearing or Lower Impeller.Unit Placed in Hot Shutdown.Approx 7 Days Needed to Repair Pump PNO-III-86-062, on 860627,while Operating at 68% Power, Lightening Strike Caused Unit to Automatically Trip.Shutdown Was Due to Failure of Some Primary Sys Instruments,Causing Reactor Protection Sys to Trip Unit.State of Il Notified1986-06-30030 June 1986 PNO-III-86-062:on 860627,while Operating at 68% Power, Lightening Strike Caused Unit to Automatically Trip.Shutdown Was Due to Failure of Some Primary Sys Instruments,Causing Reactor Protection Sys to Trip Unit.State of Il Notified PNO-III-86-046, on 860516,RCS Found Leaking Approximately 20 Gpm.Caused by Failed Packing in Pressurizer Spray Valve. Valve Packing & leak-related Damage to Drain Line Sight Glass & Rupture Disk Will Be Repaired1986-05-16016 May 1986 PNO-III-86-046:on 860516,RCS Found Leaking Approximately 20 Gpm.Caused by Failed Packing in Pressurizer Spray Valve. Valve Packing & leak-related Damage to Drain Line Sight Glass & Rupture Disk Will Be Repaired PNO-I-86-038, on 860515,current Contract W/Local Unions Will Expire & Strike of Operators,Maint Personnel & Clerical Staff May Occur.Unions Recommend Rejection of Util Proposal. Plant Shut Down Since 860412 Containment Isolation Occurred1986-05-15015 May 1986 PNO-I-86-038:on 860515,current Contract W/Local Unions Will Expire & Strike of Operators,Maint Personnel & Clerical Staff May Occur.Unions Recommend Rejection of Util Proposal. Plant Shut Down Since 860412 Containment Isolation Occurred PNO-III-86-041, on 860509,unit Shut Down to Repair Failed Main Steam Line Check Valve on Loop B.Normal Differential Pressure Exceeded by 37 Psig.Unit Expected to Be Shut Down for 48 H1986-05-0909 May 1986 PNO-III-86-041:on 860509,unit Shut Down to Repair Failed Main Steam Line Check Valve on Loop B.Normal Differential Pressure Exceeded by 37 Psig.Unit Expected to Be Shut Down for 48 H PNO-III-86-020, on 860303,Westinghouse DB-50 Reactor Trip Breaker Tripped at 190 Milliseconds During Testing. Subsequent Response Tests Satisfactory.Vendor Assisting in Troubleshooting1986-03-10010 March 1986 PNO-III-86-020:on 860303,Westinghouse DB-50 Reactor Trip Breaker Tripped at 190 Milliseconds During Testing. Subsequent Response Tests Satisfactory.Vendor Assisting in Troubleshooting PNO-III-86-013, on 860219,both Unit 2 Diesel Generators & Units 1 & 2 Shared Diesel Declared Inoperable.Cause Undetermined.Partially Closed Fuel Line Valve on Diesel Generator 2A Discovered.Generators Retested1986-02-20020 February 1986 PNO-III-86-013:on 860219,both Unit 2 Diesel Generators & Units 1 & 2 Shared Diesel Declared Inoperable.Cause Undetermined.Partially Closed Fuel Line Valve on Diesel Generator 2A Discovered.Generators Retested PNO-III-85-102, on 851214,during Outage,Both Trains of RHR Sys Lost When Water in Reactor Vessel Drained Below Level of Suction Line.Caused by Erroneous Control Room Indication of RCS Configuration Used for Outage1985-12-16016 December 1985 PNO-III-85-102:on 851214,during Outage,Both Trains of RHR Sys Lost When Water in Reactor Vessel Drained Below Level of Suction Line.Caused by Erroneous Control Room Indication of RCS Configuration Used for Outage PNO-III-85-087, on 851007,concrete Finisher Killed After Falling 45 Ft While Working on Interim Radwaste Storage Facility.No Contamination Involved1985-10-0808 October 1985 PNO-III-85-087:on 851007,concrete Finisher Killed After Falling 45 Ft While Working on Interim Radwaste Storage Facility.No Contamination Involved PNO-III-83-065, on 830727,licensee Determined That All 3 EDGs Associated W/Unit 2 Were Technically Inoperable Since Required Surveillance Testing Had Not Been Conducted within Proper Time Frame.State of Il Notified1983-07-28028 July 1983 PNO-III-83-065:on 830727,licensee Determined That All 3 EDGs Associated W/Unit 2 Were Technically Inoperable Since Required Surveillance Testing Had Not Been Conducted within Proper Time Frame.State of Il Notified PNO-III-82-062, on 820629,three-nonlicensed Stationmen at Quad-Cities Station Identified by Alleger as Users of Marijuana.On Same Day,During Search of Incoming Truck, Security Personnel Discovered Marijuana Cigarette1982-06-30030 June 1982 PNO-III-82-062:on 820629,three-nonlicensed Stationmen at Quad-Cities Station Identified by Alleger as Users of Marijuana.On Same Day,During Search of Incoming Truck, Security Personnel Discovered Marijuana Cigarette PNO-III-80-166, on 800903,unit Tripped from 93% Power Due to Low Steam Generator Level,Caused by Feedwater Pump Trip. Water Hammer Occurred While Steam Generator Level Was Below Feed Ring Causing Safety Injection Actuation1980-09-0303 September 1980 PNO-III-80-166:on 800903,unit Tripped from 93% Power Due to Low Steam Generator Level,Caused by Feedwater Pump Trip. Water Hammer Occurred While Steam Generator Level Was Below Feed Ring Causing Safety Injection Actuation PNO-III-80-063A, 800402,ltr from Mayor of Waukegan,Il, Demanded Actions as Result of 800331 Unplanned Gaseous Release.Region 3 Is Continuing Investigation & Evaluation1980-04-0303 April 1980 PNO-III-80-063A:800402,ltr from Mayor of Waukegan,Il, Demanded Actions as Result of 800331 Unplanned Gaseous Release.Region 3 Is Continuing Investigation & Evaluation PNO-III-80-063, on 800331,unplanned Gaseous Radiation Release Occurred Because of Operator Error in Operating Valves. Preliminary Analysis Indicates Release Rates Did Not Exceed Tech Spec Limits1980-04-0101 April 1980 PNO-III-80-063:on 800331,unplanned Gaseous Radiation Release Occurred Because of Operator Error in Operating Valves. Preliminary Analysis Indicates Release Rates Did Not Exceed Tech Spec Limits ML20126B5451980-01-25025 January 1980 PNS-III-80-002:800125,switchboard Operator Received Call Suggesting Facility Should Be Blown Up.Caller Allegedly Has Parts for Bomb.Resident Inspector Received Call Same Day.Increased Security Employed.No Disruption of Operation ML20249A6721978-10-0606 October 1978 PNS-78-049:on 781007,demonstration Will Take Place at Site. Licensee Will Have Its Full Complement of Guards on Duty Augmented by Zion Police Dept During Demonstration ML20216K1531978-07-18018 July 1978 PNO-78-135:on 780713,employee Alleged That Manual Operation of Sys Causing Unnecessary Radiation to Emplyees ML20249A7391978-04-0303 April 1978 PNS-78-015:on 780331,US Marshall Served Subpoena to Testify Before Grand Jury to Regional Director,Safeguards Branch Chief & Chief of Security & Investigations Section ML20126D1901977-08-12012 August 1977 PNO-77-143:Pacific Pump Co Supplied Facilities W/Production Lot of 40 Pumps Mfg Using Shafts Made of Inferior Matl. Cause Unstated.All Utils W/Pumps Were Notified.Nrc Headquarters Notified on 770812 ML20151Y2051977-07-19019 July 1977 PNO-77-131:on 770712,bypassing of Safety Signals Occurred. Pressurizer Pressure & SG Levels Remained Essentially Constant During Event.No Damage to Any Equipment Noted After Levels Restored to Normal ML20151X6311977-07-11011 July 1977 PNO-77-124:on 770710,Commonwealth Edison Reported That Unit 2 Reactor Scram Occurred Due to 2C SG Low Level Condition. Condition Caused by Loss of Feedwater Pump While Performing Maint on Feedwater Pump Lube Oil Filter Sys 1998-05-18 Category:TEXT-INSPECTION & AUDIT & I&E CIRCULARS MONTHYEARIR 05000295/19990031999-09-0101 September 1999
[Table view]Insp Repts 50-295/99-03 & 50-304/99-03 on 990608-0812.No Violations Noted.Major Areas Inspected:Licensee Facility & Control,Decommissioning Support Activities,Sf Safety & Radiological Safety ML20210C3781999-07-20020 July 1999 Notice of Violation from Insp on 990318.Violations Noted: on 980224,individual Attempted to Enter Protected Area of Plant with Firearm.Search Equipment Operator Failed to Failed to Secure Item & Prevent Access ML20210C4301999-07-20020 July 1999 Notice of Violation from Investigation on 990318.Violation Noted:On 980224,recipient Caused Util to Be in Violation of Section 2.C.6 of Licenses DPR-39 & DPR-48.Recipient Attempted to Enter Protected Area of Station with Handgun IR 05000295/19990021999-06-18018 June 1999 Insp Repts 50-295/99-02 & 50-304/99-02 on 990121-0608.No Violations Noted.Major Areas Inspected:Licensee Facility Management & Control,Decommissioning Support Activities,Sf Safety & Radiological Safety ML20205P2211999-04-0909 April 1999 Notice of Violation from Insp & Investigation Completed on 981112.Violation Noted:From Approx July,1997 to 980122,SGI Was Not Stored in Locked Storage Container While Unattended IR 05000295/19980101998-11-0303 November 1998 Insp Repts 50-295/98-10 & 50-304/98-10 on 980814-1008.No Violations Noted.Major Areas Inspected:Facility Mgt & Control,Decommissioning Support Activities,Sf Safety & Radiological Safety IR 05000295/19980091998-09-0808 September 1998 Insp Repts 50-295/98-09 & 50-304/98-09 on 980626-0813.No Violations Noted.Major Areas Inspected:Facility Mgt & Control,Decommissioning Support Activities,Sf Safety & Radiological Safety IR 05000295/19980071998-06-26026 June 1998 Insp Repts 50-295/98-07 & 50-304/98-07 on 980425-0609.No Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support PNO-III-98-030, on 980517,armed Security Guard on Patrol in Owner Controlled Area Reported to Security Person Lying Near Road.Guard Subsequently Reported Being Shot.No Intruder Found.Guard Admitted Shooting Himself in Foot1998-05-18018 May 1998 PNO-III-98-030:on 980517,armed Security Guard on Patrol in Owner Controlled Area Reported to Security Person Lying Near Road.Guard Subsequently Reported Being Shot.No Intruder Found.Guard Admitted Shooting Himself in Foot IR 05000295/19980061998-04-23023 April 1998 Insp Repts 50-295/98-06 & 50-304/98-06 on 980330-0403.No Violations Noted.Major Areas Inspected:Plant Support IR 05000295/19980041998-03-31031 March 1998 Insp Repts 50-295/98-04 & 50-304/98-04 on 980203-0313.No Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support IR 05000295/19980021998-03-0606 March 1998 Insp Repts 50-295/98-02 & 50-304/98-02 on 980112-0219.No Violations Noted.Major Areas Inspected:Plant Support ML20203H8841998-02-25025 February 1998 Insp Repts 50-295/97-32 & 50-304/97-32 on 971217-980202. Violations Noted.Major Areas Inspected:Operations, Engineering & Plant Support ML20203H8601998-02-25025 February 1998 Notice of Violation from Insp on 971217-980202.Violation Noted:Licensee Returned to Svc Valves 2FW0038 & 2FW0042 in Locked Position Instead of Locked Closed Position ML20202D7291998-02-0606 February 1998 Notice of Violation from Insp on 970120-23.Violation Noted: on 980115,radiation Protection Technician Performed Calibration of Auxiliary Bldg Exit Personnel Contamination Monitor & Failed to Reset Monitor to Initial Setting ML20202D7441998-02-0606 February 1998 Insp Repts 50-295/98-03 & 50-304/98-03 on 980120-23. Violations Noted.Major Areas Inspected:Plant Support Performance & Specifically,Evaluation of Effectiveness of Radiation Protection Program IR 05000295/19970271998-01-30030 January 1998 Insp Repts 50-295/97-27 & 50-304/97-27 on 971117-25.No Violations Noted.Major Areas Inspected:Licensed Reactor Operator & Senior Reactor Operator Requalification Training Programs ML20199G3461998-01-27027 January 1998 Insp Repts 50-295/97-23 & 50-304/97-23 on 970908-1216. Violations Noted.Major Areas Inspected:Engineering ML20199G3271998-01-27027 January 1998 Notice of Violation from Insp on 970908-1216.Violation Noted:As of 970724,licensee Failed to Ensure That Training Provided to Selected Contractor Craft & Quality Control Insp Personnel Performing Raychem Splice Applications ML20199A2461998-01-21021 January 1998 Insp Repts 50-295/97-25 & 50-304/97-25 on 971011-1216. Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support IR 07100011/20120161998-01-21021 January 1998 Notice of Violation from Insp on 971011-1216.Violations Noted:Procedures Were Not Appropriate to Circumstances in Listed Instances PNO-III-98-006, on 980115,licensee Announced Permanent Shut Down of Station.Util Plans to Maintain Plant in Safstor Decommissioning Mode Until Approx 20141998-01-15015 January 1998 PNO-III-98-006:on 980115,licensee Announced Permanent Shut Down of Station.Util Plans to Maintain Plant in Safstor Decommissioning Mode Until Approx 2014 ML20198P5561998-01-15015 January 1998 Notice of Violation & Proposed Imposition of Civil Penalty in Amount of $110,000.Violations Noted:Three FFD Trained Supervisors Failed to Require for-cause Test for Employee W/Smell of Alcohol in Protected Area ML20216D7411998-01-12012 January 1998 EN-98-002:on 980115,notice of Proposed Imposition of Civil Penalty in Amount of $110,000 Issued to Licensee.Action Based on Severity Level III Problem Involving Implementation of fitness-for-duty Program at Zion Station IR 05000295/19970291998-01-0909 January 1998 Insp Repts 50-295/97-29 & 50-304/97-29 on 971202-05.No Violations Noted.Major Areas Inspected:Licensee Performance During Plant Biennial Exercise of Emergency Plan IR 05000295/19970211997-12-0909 December 1997 Insp Repts 50-295/97-21 & 50-304/97-21 on 970602-0919.No Violations Noted.Major Areas Inspected:Licensee Developed Phoenix Training Program as Part of Station Restart Action Plan ML20203E5111997-12-0505 December 1997 Notice of Violation from Insp on 971027-31.Violation Noted:On 971017-18,entrance to Truck Bay of Radioactive High Level Waste Area Was Not Locked & Personnel Did Not Have Direct Oversight IR 05000295/19970261997-12-0505 December 1997 Insp Repts 50-295/97-26 & 50-304/97-26 on 971027-31. Violations Noted.Major Areas Inspected:Plant Support, Performance & Evaluated Effectiveness of Radiation Protection Program IR 05000295/19970311997-12-0404 December 1997 Predecisional Enforcement Conference Repts 50-295/97-31 & 50-304/97-31 on 971201.Violations Noted.Major Areas Discussed:Violations Involving Failures to Adequately Implement fitness-for-duty Program Requirements ML20202D9291997-11-28028 November 1997 Notice of Violation from Insp on 970830-1010.Violation Noted:On 970910,while Returning QA Fire Pump Breaker to Svc IAW out-of-svc Number 970009297,non-licensed Operator Did Not Close Control Power Knife Switch as Required ML20202D9401997-11-28028 November 1997 Insp Repts 50-295/97-22 & 50-304/97-22 on 970830-1010. Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support IR 05000295/19970171997-10-10010 October 1997 Insp Repts 50-295/97-17 & 50-304/97-17 on 970619-0922.No Violations Noted But pre-decisional Enforcement Conference Will Be Scheduled to Discuss Violations Cited.Major Areas inspected:fitness-for-duty Related Events IR 05000295/19970181997-10-0202 October 1997 Insp Repts 50-295/97-18 & 50-304/97-18 on 970409-0730. Violations Noted.Major Areas Inspected:Engineering ML20211J7991997-10-0202 October 1997 Notice of Violation from Insp on 970409-0730.Violation Noted:Zion Station Measures to Control Matls Were Inadequate & Did Not Prevent Installation of Following,From 1992 to 1997,high Efficiency Particulate Air Filters ML20217F0861997-09-30030 September 1997 Notice of Violation from Insp on 970719-0829.Violation Noted:On 970827,engineering Contractor Operated 2C Svc Water Pump Lower Bearing Suppl Isolation valve,2SW0624,w/o Authorization from Operations Dept IR 05000295/19970191997-09-30030 September 1997 Insp Repts 50-295/97-19 & 50-304/97-19 on 970719-0829. Violations Noted.Major Areas Inspected:Operations,Maint & Engineering ML20217A3371997-09-12012 September 1997 Notice of Violation from Insp on 961207-970527.Violation Noted:During 1996 Unit 2 Refueling Outage,Irradiated Fuel Was Moved & Fuel Was Stored in Pool W/Less than 60 Days Decay Time & Fuel Bldg Exhaust Sys Was Operating PNO-III-97-071, on 970903,Comm Ed Announced Series of Mgt Changes & Restructuring of Nuclear Div Organization.New Site Vice Presidents at Braidwood & Quad Cities Former Plant Managers.State of Il Will Be Notified of Mgt Changes1997-09-0303 September 1997 PNO-III-97-071:on 970903,Comm Ed Announced Series of Mgt Changes & Restructuring of Nuclear Div Organization.New Site Vice Presidents at Braidwood & Quad Cities Former Plant Managers.State of Il Will Be Notified of Mgt Changes ML20217R2441997-09-0202 September 1997 Notice of Violation & Proposed Imposition of Civil Penalty in Amount of $330,000.Violation Noted:Primary Nso Did Not Establish Power at or Less than Point of Adding Heat IAW GOP-4,step 5.21.f IR 05000295/19970161997-08-28028 August 1997 Insp Repts 50-295/97-16 & 50-304/97-16 on 970530-0718. Violations Noted.Major Areas Inspected:Operations, Maintenance & Engineering ML20216C4801997-08-28028 August 1997 Notice of Violation from Insp on 970530-0718.Violation Noted:On 970510,during Performance of OSP 97-012,section 5.58,licensee Failed to Close 3L Kiene Valve ML20211C9071997-08-27027 August 1997 EN-97-080:on 970902,notice of Proposed Imposition of Civil Penalty in Amount of $330,000 Issued to Licensee.Action Based on Three Severity Level III Violations Pertaining to Reactivity Mgt Problems & Command/Control Problems IR 05000295/19970201997-08-26026 August 1997 Insp Repts 50-295/97-20 & 50-304/97-20 on 970728-0801. Violations Noted.Major Areas Inspected:Aspects of Licensee Plant Support Performance & Specifically,An Evaluation of Effectiveness of RP Program ML20217R3411997-08-26026 August 1997 Notice of Violation from Insp on 970728-0801.Violation Noted:High Radiation Area W/Radiation Levels Greater than 1000 Mrem/Hr Was Not Locked & Personnel Did Not Have Direct Oversight of & Positive Control Over Each Entry Into Area IR 05000295/19970131997-08-15015 August 1997 Insp Repts 50-295/97-13 & 50-304/97-13 on 970404-0529. Violations Noted.Major Areas Inspected:Operations,Maint, Engineering & Plant Support Re Failure to Immediately Notify CR of Fire in Unit 1 Containment Resulting in Violation ML20217P9661997-08-15015 August 1997 Notice of Violation from Insp on 970404-0529.Violations Noted:Fire Resulted When Mechanical Maint Personnel Did Not Ensure That Adequate Natural or Mechanical Ventilation Was Established While Applying Flammable Lubricant to Rv Holes ML20149G6381997-07-17017 July 1997 Insp Rept 50-295/97-12 on 970311-0425.Violations Noted.Major Areas Inspected:Operations,Maint & Engineering Associated W/Unit 1 Loss of Offsite Power Event That Occurred on 970311 ML20149G6341997-07-17017 July 1997 Notice of Violation from Insp on 970311-0425.Violation Noted:On 970311,licensee Identified That Procedure Did Not Exist for Responding to Loss of Offsite Power That Resulted When Unit 1 Sys Auxiliary Transformer Tripped ML20149H9961997-07-16016 July 1997 Predecisional Enforcement Conference Rept on 970703.Areas Discussed:Violations Noted in Insp Repts 50-295/97-02, 50-304/97-02,50-295/97-07 & 50-304/97-07 on 970206-0402 & 0312-0428 & Corrective Actions IR 05000295/19970151997-06-26026 June 1997 Insp Repts 50-295/97-15 & 50-304/97-15 on 970602-06.No Violations Noted.Major Areas Inspected:Licensee Plant Support Performance & Effectiveness of RP Program 1999-09-01 |
PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-III-86-121A Date November 10, This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by the Region III staff on this date.
Facility: Commonwealth Edison Company Licensee Emergency Classification:
Zion Unit 1 Notification of an Unusual Event Zion, IL 60099 Alert Site Area Emergency Docket No. 50-294' / General Emergency Q X Not Applicable f
Subject:
FAILURE OF DIESEL GENERATOR (UPDATE)
A preliminary evaluation by the licensee and Region III (Chicago) had determined that the IB diesel generator failure was caused by an improperly torqued bolt in the articulated connecting rod. A review of quality assurance records, interviews with licensee personnel, and physical examination of the components indicate that the failure resulted from the improper torquing of the bolt during a piston replacement which occurred during the current outage. The failure occurred during post-maintenance testing. Metallurgical examination of the failed bolt showed the failure mechanism to be fatigue.
The licensee has examined two of the four other diesel generators on site. Several bolts were found that had suspect torque valves; these bolts have been replaced and torqued to the proper value. Based on the current review, it does not appear that the failure has generic implications. The licensee plans to examine the remL:ining diesel generators.
Repair activities on the diesel generator are continuing. Region III (Chicago) is monitoring the repair work.
The State of Illinois will be informed.
This information is current as of 11 a.m. (CST), November 10, 1986.
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CONTACT: B. Burges D h$
J. Muf fett .G
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emond FTS 388-5695 FTS 388-5763 FTS 388-5574 i
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CA RIII Resident Office PDR Licensee: $32 (Corp. Office - Reactor Lic. Only) 1 8611180110 861110 PDR I&E Region III PNO-III-86-121 PDR Rev. November 1985 Zl J[