PNO-II-93-062, on 931115,Unit 2 Tripped from 95% Reactor Power.Caused by Three Main Feedwater Regulating Valves Closed.Unit Has Been Taken to cold-shutdown to Investigate Cause of SG Level Oscillations
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| ML20058J728 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 11/16/1993 |
| From: | Belisle G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| References | |
| PNO-II-93-062, PNO-II-93-62, NUDOCS 9312140215 | |
| Download: ML20058J728 (1) | |
Similar Documents at Surry | |
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Category:PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO
MONTHYEARPNO-II-93-062, on 931115,Unit 2 Tripped from 95% Reactor Power.Caused by Three Main Feedwater Regulating Valves Closed.Unit Has Been Taken to cold-shutdown to Investigate Cause of SG Level Oscillations1993-11-16016 November 1993
[Table view]PNO-II-93-062:on 931115,Unit 2 Tripped from 95% Reactor Power.Caused by Three Main Feedwater Regulating Valves Closed.Unit Has Been Taken to cold-shutdown to Investigate Cause of SG Level Oscillations PNO-II-93-037, on 930820,unscheduled Shutdown in Excess of 72 H Occurred Due to Need to Repair Leak in Joint on SG B. RCS Temp Reduced Below 200 Degrees F.Licensee to Inspect Drain Valve Assemblies on Sg.State of VA Notified1993-08-23023 August 1993 PNO-II-93-037:on 930820,unscheduled Shutdown in Excess of 72 H Occurred Due to Need to Repair Leak in Joint on SG B. RCS Temp Reduced Below 200 Degrees F.Licensee to Inspect Drain Valve Assemblies on Sg.State of VA Notified PNO-II-90-066, on 901023,util Made 1 H Rept Per 10CFR50.72 Re Entry Into Station Emergency Plan for Shutdown of Unit 2. Caused by Svc Water Flow,Less That Design Basis Required Flow.Licensee Currently Evaluating Situation1990-10-23023 October 1990 PNO-II-90-066:on 901023,util Made 1 H Rept Per 10CFR50.72 Re Entry Into Station Emergency Plan for Shutdown of Unit 2. Caused by Svc Water Flow,Less That Design Basis Required Flow.Licensee Currently Evaluating Situation PNO-II-89-066A, updates Status of Hurricane Hugo for Nuclear Facilities in Southeast.Manning of Incident Response Ctr by Region II Continuing1989-09-21021 September 1989 PNO-II-89-066A:updates Status of Hurricane Hugo for Nuclear Facilities in Southeast.Manning of Incident Response Ctr by Region II Continuing PNO-II-88-011, on 880206,slight Positive Pressure Created in Primary Drain Tank Due to Large Vol of Water & Overhead Gas Compressor Inoperable,Causing Gaseous Leak in Auxiliary Bldg.Cause Not Stated1988-02-0808 February 1988 PNO-II-88-011:on 880206,slight Positive Pressure Created in Primary Drain Tank Due to Large Vol of Water & Overhead Gas Compressor Inoperable,Causing Gaseous Leak in Auxiliary Bldg.Cause Not Stated PNO-II-87-078, on 871126,licensee Removed Unit 1 from Svc to Repair Leaking Manway Cover on Secondary Side of C Steam Generator.Unit Cooled Down & Manway Gasket Replaced. Commonwealth of Virginia Informed1987-11-30030 November 1987 PNO-II-87-078:on 871126,licensee Removed Unit 1 from Svc to Repair Leaking Manway Cover on Secondary Side of C Steam Generator.Unit Cooled Down & Manway Gasket Replaced. Commonwealth of Virginia Informed PNO-II-87-061, on 870920,automatic Trip from 100% Power Occurred.Caused by Phase to Ground Fault in B Phase at Electrical Connection on B Reactor Coolant Pump.Safety Injection Signal Reset1987-09-21021 September 1987 PNO-II-87-061:on 870920,automatic Trip from 100% Power Occurred.Caused by Phase to Ground Fault in B Phase at Electrical Connection on B Reactor Coolant Pump.Safety Injection Signal Reset PNO-II-87-053A, on 870730,State of Ny,Dept of Environ Conservation & Dept of Radiation Health Completed Survey of Miscellaneous Boxes & Equipment W/Markings from VEPCO Found in Abandoned Bldg in Springwater,Ny.No Problems Noted1987-07-30030 July 1987 PNO-II-87-053A:on 870730,State of Ny,Dept of Environ Conservation & Dept of Radiation Health Completed Survey of Miscellaneous Boxes & Equipment W/Markings from VEPCO Found in Abandoned Bldg in Springwater,Ny.No Problems Noted PNO-II-87-053, on 870728,licensee Notified That Fireman Discovered Miscellaneous Boxes & Equipment in Abandoned Bldg Outside Springwater,Ny.Matl Might Be Clean Surplus Matl Disposed of After Cancellation of North Anna 31987-07-29029 July 1987 PNO-II-87-053:on 870728,licensee Notified That Fireman Discovered Miscellaneous Boxes & Equipment in Abandoned Bldg Outside Springwater,Ny.Matl Might Be Clean Surplus Matl Disposed of After Cancellation of North Anna 3 PNO-II-87-040, on 870623,unit Manually Shut Down Following Estimated 40 Gpm Leak in Rcs.Caused by Packing on Reactor Coolant Loop Stop Valve.Licensee Preparing Unit to Go to Mode 5 to Effect Repairs1987-06-23023 June 1987 PNO-II-87-040:on 870623,unit Manually Shut Down Following Estimated 40 Gpm Leak in Rcs.Caused by Packing on Reactor Coolant Loop Stop Valve.Licensee Preparing Unit to Go to Mode 5 to Effect Repairs PNO-II-87-037, on 870607,licensee Entered 24 H Limiting Condition for Operation When Outside Recirculation Spray Pump B Failed Periodic Surveillance Test Due to High Vibration & Low Discharge Pressure.Unit Shut Down1987-06-0909 June 1987 PNO-II-87-037:on 870607,licensee Entered 24 H Limiting Condition for Operation When Outside Recirculation Spray Pump B Failed Periodic Surveillance Test Due to High Vibration & Low Discharge Pressure.Unit Shut Down PNO-II-87-032, updates PNO-II-87-029.Util Determined That Partial Closure of Isolation Valve Which Brought About Reactor Scram on 870516 Caused by Shearing of Valve Stem Above Backseat.Metallurgist Evaluating Break1987-05-21021 May 1987 PNO-II-87-032:updates PNO-II-87-029.Util Determined That Partial Closure of Isolation Valve Which Brought About Reactor Scram on 870516 Caused by Shearing of Valve Stem Above Backseat.Metallurgist Evaluating Break PNO-II-87-029, on 870516,unit Tripped on Low Reactor Coolant Flow Rate in Loop A.Caused by Partial Closure of Hot Loop Isolation Valve.Outage of 12 Days Planned to Correct Problem.Resident Inspector Will Provide Followup1987-05-18018 May 1987 PNO-II-87-029:on 870516,unit Tripped on Low Reactor Coolant Flow Rate in Loop A.Caused by Partial Closure of Hot Loop Isolation Valve.Outage of 12 Days Planned to Correct Problem.Resident Inspector Will Provide Followup PNO-II-87-011A, on 870213,leak Discovered in Svc Water Line Below Floor of Unit 2 Turbine Bldg.Util Will Replace Defective Portion of Unit 2 Side of Svc Water Piping.Unit 1 Side of Same Sys Tested & Acceptable1987-02-18018 February 1987 PNO-II-87-011A:on 870213,leak Discovered in Svc Water Line Below Floor of Unit 2 Turbine Bldg.Util Will Replace Defective Portion of Unit 2 Side of Svc Water Piping.Unit 1 Side of Same Sys Tested & Acceptable PNO-II-87-011, heatup of Unit 1 Beginning in Preparation for Return to Svc.Restart of Unit 2 Scheduled 2 to 3 Wks Later.Licensee Informed of Region II Acceptance of Restart Plan in 870210 Augmented Insp Team Rept1987-02-12012 February 1987 PNO-II-87-011:heatup of Unit 1 Beginning in Preparation for Return to Svc.Restart of Unit 2 Scheduled 2 to 3 Wks Later.Licensee Informed of Region II Acceptance of Restart Plan in 870210 Augmented Insp Team Rept PNO-II-86-091D, licensee Repts Two Addl Deaths Occurred as Result of Injuries from 861209 Accident.Caused by Break of 18-inch Feedwater Sys Suction Line Scalding Eight Workers W/Hot Water & Steam.Number of Dead Now Four1986-12-16016 December 1986 PNO-II-86-091D:licensee Repts Two Addl Deaths Occurred as Result of Injuries from 861209 Accident.Caused by Break of 18-inch Feedwater Sys Suction Line Scalding Eight Workers W/Hot Water & Steam.Number of Dead Now Four PNO-II-86-091C, ultrasonic Testing of Unit 1 Piping Elbow Disclosed Min Pipe Wall Thickness of 0.16 Inch.Design Specs Require 0.36 Inch Min Thickness.Ultrasonic Testing Continuing1986-12-15015 December 1986 PNO-II-86-091C:ultrasonic Testing of Unit 1 Piping Elbow Disclosed Min Pipe Wall Thickness of 0.16 Inch.Design Specs Require 0.36 Inch Min Thickness.Ultrasonic Testing Continuing PNO-II-86-091B, tour Conducted for Reporters of Site of 861209 Pipe Break Event.On 861212,pump Discharge Check Valve Inspected,Revealing One Missing Hinge Pin & Unseated Valve Disc.Nrc Pipe Break Specialist Onsite1986-12-12012 December 1986 PNO-II-86-091B:tour Conducted for Reporters of Site of 861209 Pipe Break Event.On 861212,pump Discharge Check Valve Inspected,Revealing One Missing Hinge Pin & Unseated Valve Disc.Nrc Pipe Break Specialist Onsite PNO-II-86-091A, Unit 2 Feedwater Pipe Rupture Resulted in Two Deaths as of 861211,w/four Other Workers Hospitalized.Unit 1 Shutting Down.Extensive Erosion/Corrosion Found Inside Pipe. NRC Augmented Insp Team Onsite.Investigation Continuing1986-12-11011 December 1986 PNO-II-86-091A:Unit 2 Feedwater Pipe Rupture Resulted in Two Deaths as of 861211,w/four Other Workers Hospitalized.Unit 1 Shutting Down.Extensive Erosion/Corrosion Found Inside Pipe. NRC Augmented Insp Team Onsite.Investigation Continuing PNO-II-86-091, on 861209,reactor Trip Occurred & Feedwater Line Ruptured Upstream of Main Feedwater Pump 2-A,injuring 8 Personnel,Some Seriously.Caused by Break in Elbow on Mainfeed Pump Header.Unit Maintained Stable Condition1986-12-10010 December 1986 PNO-II-86-091:on 861209,reactor Trip Occurred & Feedwater Line Ruptured Upstream of Main Feedwater Pump 2-A,injuring 8 Personnel,Some Seriously.Caused by Break in Elbow on Mainfeed Pump Header.Unit Maintained Stable Condition PNO-II-86-074, on 861013,licensee Issued News Release Stating That Investigation of Alleged Offsite Drug Use Resulted in Dismissal or Voluntary Resignation of 13 Security Officers or Employees,Including Supervisor of Security at Surry1986-10-14014 October 1986 PNO-II-86-074:on 861013,licensee Issued News Release Stating That Investigation of Alleged Offsite Drug Use Resulted in Dismissal or Voluntary Resignation of 13 Security Officers or Employees,Including Supervisor of Security at Surry PNO-II-86-067, on 860918 & 19,two Control Rods Dropped Into Core.Caused by Worker Bumping Electrical Connector Which Resulted in Loss of Electric Power to Control Rod.Operators Manually Tripped Reactor & Started Cold Shutdown1986-09-23023 September 1986 PNO-II-86-067:on 860918 & 19,two Control Rods Dropped Into Core.Caused by Worker Bumping Electrical Connector Which Resulted in Loss of Electric Power to Control Rod.Operators Manually Tripped Reactor & Started Cold Shutdown PNO-II-86-054, on 860722,unscheduled Shutdown Longer than 48 H Occurred Due to Inoperable Recirculation Containment Spray Heat Exchanger.Unit Placed in Cold Shutdown for Component Repairs.Commonwealth of VA Informed1986-07-23023 July 1986 PNO-II-86-054:on 860722,unscheduled Shutdown Longer than 48 H Occurred Due to Inoperable Recirculation Containment Spray Heat Exchanger.Unit Placed in Cold Shutdown for Component Repairs.Commonwealth of VA Informed PNO-II-86-052, on 860719,licensee Declared Unusual Event Due to Anonymous Telephoned Bomb Threat to Plant Security Shift Supervisor.No Evacuation Conducted & Unusual Event Terminated.Commonwealth of Virginia Informed1986-07-21021 July 1986 PNO-II-86-052:on 860719,licensee Declared Unusual Event Due to Anonymous Telephoned Bomb Threat to Plant Security Shift Supervisor.No Evacuation Conducted & Unusual Event Terminated.Commonwealth of Virginia Informed PNO-II-86-042, on 860616,unit Taken Out of Svc for More than 48 H to Repair Leaking Expansion Joint on Recirculation Spray Subsystem HX Return Line1986-06-18018 June 1986 PNO-II-86-042:on 860616,unit Taken Out of Svc for More than 48 H to Repair Leaking Expansion Joint on Recirculation Spray Subsystem HX Return Line PNO-II-86-037, on 860527,inadvertent Release of 28.5 Ci Xe-133 Occurred,Exceeding Tech Spec Limit,As Two Steam Generators Purged W/Air in Preparation for Eddy Current Testing.Purge Stopped & Reading Returned to Normal1986-05-29029 May 1986 PNO-II-86-037:on 860527,inadvertent Release of 28.5 Ci Xe-133 Occurred,Exceeding Tech Spec Limit,As Two Steam Generators Purged W/Air in Preparation for Eddy Current Testing.Purge Stopped & Reading Returned to Normal PNO-II-86-035, on 860511,partial Loss of Power & Initiation of Train B Safety Injection Occurred When Station Battery 1-B Removed from Svc.Caused by Failure of Adjusted Battery Chargers to Pick Up Load.Power Restored1986-05-13013 May 1986 PNO-II-86-035:on 860511,partial Loss of Power & Initiation of Train B Safety Injection Occurred When Station Battery 1-B Removed from Svc.Caused by Failure of Adjusted Battery Chargers to Pick Up Load.Power Restored PNO-II-86-013, on 860205,packaged,unloaded mini-14 Rifle, Being Returned to Security After Repairs,Passed Undetected Through X-ray Search.Region Will Send Security Inspector to Facility on 860210.Util Prepared to Respond to Media1986-02-0606 February 1986 PNO-II-86-013:on 860205,packaged,unloaded mini-14 Rifle, Being Returned to Security After Repairs,Passed Undetected Through X-ray Search.Region Will Send Security Inspector to Facility on 860210.Util Prepared to Respond to Media PNO-II-85-092, on 850926,Hurricane Gloria Located About 240 Miles South of Cape Hatteras,Nc,Moving North Northwest at 15 to 20 Miles Per Hour.Brunswick Unit 1 in Refueling Shutdown,Unit 2 Shut Down & Surry 1 & 2 at Full Power1985-09-26026 September 1985 PNO-II-85-092:on 850926,Hurricane Gloria Located About 240 Miles South of Cape Hatteras,Nc,Moving North Northwest at 15 to 20 Miles Per Hour.Brunswick Unit 1 in Refueling Shutdown,Unit 2 Shut Down & Surry 1 & 2 at Full Power PNO-II-85-077, on 850804,unit Tripped from 100% Power.Caused by Employee Inadvertently Bumping Instrumentation While Inspecting Malfunctioning Reactor Coolant Loop Fill Valve. Valve Repaired & Unit Shut Down for Approx 10 Days1985-08-0909 August 1985 PNO-II-85-077:on 850804,unit Tripped from 100% Power.Caused by Employee Inadvertently Bumping Instrumentation While Inspecting Malfunctioning Reactor Coolant Loop Fill Valve. Valve Repaired & Unit Shut Down for Approx 10 Days PNO-II-84-069A, update to PNO-II-84-069,issued on 841010. Region II Continues to Monitor Hurricane Josephine,Centered Near Latitude 29.4 North & Longitude 72.5 West1984-10-11011 October 1984 PNO-II-84-069A:update to PNO-II-84-069,issued on 841010. Region II Continues to Monitor Hurricane Josephine,Centered Near Latitude 29.4 North & Longitude 72.5 West PNO-II-84-048, on 840809,two Men Were Killed in non- Radiological Accident.Electrician Helper Was Injured.Vepco Plans to Issue News Release After Victims Families Informed1984-08-0909 August 1984 PNO-II-84-048:on 840809,two Men Were Killed in non- Radiological Accident.Electrician Helper Was Injured.Vepco Plans to Issue News Release After Victims Families Informed PNO-II-83-019, on 830401,Westinghouse Maint Worker Injured When Struck on Head by Loose Section of Metal Tubing Which Fell from Reactor Coolant Pump Oil Collection Sys Line. Commonwealth of VA Informed1983-04-0101 April 1983 PNO-II-83-019:on 830401,Westinghouse Maint Worker Injured When Struck on Head by Loose Section of Metal Tubing Which Fell from Reactor Coolant Pump Oil Collection Sys Line. Commonwealth of VA Informed PNO-II-82-092, on 820808,Xe-133 Gaseous Radioactivity from Ventilation Sys Exhaust Exceeded Controlled Release Rate. No Particulate or Iodine Activity Released.No Personnel Contamination Occurred1982-08-0909 August 1982 PNO-II-82-092:on 820808,Xe-133 Gaseous Radioactivity from Ventilation Sys Exhaust Exceeded Controlled Release Rate. No Particulate or Iodine Activity Released.No Personnel Contamination Occurred ML20217A5671978-12-12012 December 1978 PNO-78-209:on 781211,shutdown Initiated Due to Apparent Steam Generator Tube Leak ML20217A1171978-11-0808 November 1978 PNO-78-191:informs That Virginia Sunshine Alliance Plans Caravan Against VEPCO on 781111-12.VEPCO Notified State & Local Officials & Commonwealth of Virginia.Region II Received Notification of Event on 781108 ML20216K0281978-08-24024 August 1978 PNO-78-151:on 780822,waste Liquid Accumulation Exceeded Tank Storage Capacity Per Rept Need for Greater Regulatory Oversight of Commerical Low Level Radioactive Waste Issued by Gao.Nrc Staff Is Preparing Response to Gao Rept ML20248F0921978-05-24024 May 1978 PNO-78-114:on 780523,licensee Will Be Shutting Down Unit 2 as Result of Preliminary Findings of NRC Investigation of Allegations Re Adequacy of Snubber Insps.Corrective Actions to Be Initiated by Licensee.Commonwealth of VA Notified ML20249A0461978-01-19019 January 1978 PNO-78-008:on 780118,welder Had Been Caught Stealing Welding Rods & Was Suspended.Allegations of Improper Activities at Plant Were Made.Individual Would Provide Details to VEPCO President Only ML20207G6021977-11-18018 November 1977 PNO-77-204:on 771118,unit Shutdown Due to Apparent SG Tube Leak.Unit Will Be Placed in Cold Shutdown Condition,Portion of RCS Drained & Primary Side of SG Inspected.Affected Tubes Will Be Plugged.Licensee Plans to Issue News Release ML20151Y1471977-07-15015 July 1977 PNO-77-128:on 770711,Surry Unit 2 Was Shutdown Due to Increased Primary to Secondary Leakage in 2C Sg.Insp on 770714 Showed,Tube Plug Missing from Leaking Tube.Region II Issuing Press Release ML20249A8531977-05-31031 May 1977 PNS-77-026:during Latter Part of May 1977,investigation Was Conducted of Security Program as Result of Allegations by Former VEPCO Employee.Interviews Produced 9 Allegations of Which 7 Were Substantiated.Findings Were Discussed 770526 ML20249B9191976-10-22022 October 1976 PNO-76-175:on 761007,licensee Reported Evidence of Chloride Stress Corrosion on Discharge Piping of a RSHX on Unit 2. on 761021,licensee Reported That Corrosion More Extensive than Originally Indicated ML20236U8951975-11-13013 November 1975 PN-75-123:on 751112,contract Worker,While Handling Piece of Temporary Shielding Inside Containment Lost Balance & Sat Down Abruptly & Bruised Hip.Worker Transported to Hosp & Released Same Day.No Detectable Body Contamination Found 1993-08-23 Category:TEXT-INSPECTION & AUDIT & I&E CIRCULARS MONTHYEARIR 05000280/19993021999-09-0808 September 1999
[Table view]NRC Operator Licensing Retake Exam Repts 50-280/99-302 & 50-281/99-302 for Retake Exam Tests Administered on 990824. Exam Results:One SRO Candidate Received Part B re-take Operating Exam & Passed IR 05000280/19993011999-05-14014 May 1999 NRC Operator Licensing Exam Repts 50-280/99-301 & 50-281/99-301 (Including Completed & Graded Exams) for Tests Administered on 990329-0401 & 990412-15 IR 05000280/19980051998-07-13013 July 1998 Insp Repts 50-280/98-05 & 50-281/98-05 on 980503-0613.No Violations Noted.Major Areas Inspected:Licensee Operations, Engineering,Maint & Plant Support IR 05000280/19970111997-10-0707 October 1997 Partially Withheld Insp Repts 50-280/97-11 & 50-281/97-11 on 970924 (Ref 10CFR73.21).No Violations Noted.Major Areas Inspected:Plant Support by Regional Safeguards Specialist ML20216B2581997-08-29029 August 1997 Notice of Violation & Proposed Imposition of Civil Penalty in Amount of $55,000.Violation Noted:Licensee Failed to Monitor Performance & Establish Goals Commensurate W/Safety for Emergency Switch Gear Heating Ventilation PNO-II-93-062, on 931115,Unit 2 Tripped from 95% Reactor Power.Caused by Three Main Feedwater Regulating Valves Closed.Unit Has Been Taken to cold-shutdown to Investigate Cause of SG Level Oscillations1993-11-16016 November 1993 PNO-II-93-062:on 931115,Unit 2 Tripped from 95% Reactor Power.Caused by Three Main Feedwater Regulating Valves Closed.Unit Has Been Taken to cold-shutdown to Investigate Cause of SG Level Oscillations IR 05000280/19933001993-10-20020 October 1993 Exam Repts 50-280/93-300 & 50-281/93-300 on 930920-24.Exam Results:Three SROs Passed Exam & One Out of Four ROs Failed Exam PNO-II-93-037, on 930820,unscheduled Shutdown in Excess of 72 H Occurred Due to Need to Repair Leak in Joint on SG B. RCS Temp Reduced Below 200 Degrees F.Licensee to Inspect Drain Valve Assemblies on Sg.State of VA Notified1993-08-23023 August 1993 PNO-II-93-037:on 930820,unscheduled Shutdown in Excess of 72 H Occurred Due to Need to Repair Leak in Joint on SG B. RCS Temp Reduced Below 200 Degrees F.Licensee to Inspect Drain Valve Assemblies on Sg.State of VA Notified IR 05000280/19910221991-08-23023 August 1991 Insp Repts 50-280/91-22,50-281/91-22,50-338/91-18 & 50-339/91-18 on 910731 & 0801-02.No Violations Noted.Major Areas Inspected:Evaluation of Licensee Pipe Wall Thinning Insp & Replacement Program IR 05000280/19910151991-07-0808 July 1991 Insp Repts 50-280/91-15 & 50-281/91-15 on 910520-22 & 0619. No Violations Noted.Major Areas Inspected:Isi Including Observation of Visual & Nondestructive Exams on Main Steam Sys Piping Welds IR 05000280/19910091991-04-17017 April 1991 Insp Repts 50-280/91-09 & 50-281/91-09 on 910326-29.No Violations Noted.Major Areas Inspected:Audits & Appraisals, Training & Qualifications External Exposure Control,Control of Radioactive Matl & Contamination IR 05000280/19910061991-04-12012 April 1991 Insp Repts 50-280/91-06 & 50-281/91-06 on 910224-0330. Violations Noted.Major Areas Inspected:Plant Operations, Maint,Surveillance,Procedures,Esf Sys Walkdown & Review of Licensee Self Assessment Capabilities ML20128Q5421991-04-12012 April 1991 Notice of Violation from Insp on 910224-0330.Violation Noted:Periodic Surveillance 2-PT-18.61 & PT-53.3 Were Not Performed within TS Period City Requirements PNO-II-90-066, on 901023,util Made 1 H Rept Per 10CFR50.72 Re Entry Into Station Emergency Plan for Shutdown of Unit 2. Caused by Svc Water Flow,Less That Design Basis Required Flow.Licensee Currently Evaluating Situation1990-10-23023 October 1990 PNO-II-90-066:on 901023,util Made 1 H Rept Per 10CFR50.72 Re Entry Into Station Emergency Plan for Shutdown of Unit 2. Caused by Svc Water Flow,Less That Design Basis Required Flow.Licensee Currently Evaluating Situation IR 05000280/19900231990-08-24024 August 1990 Partially Withheld Insp Repts 50-280/90-23 & 50-281/90-23 on 900723-27 (Ref 10CFR 2.790(d)).Major Areas Inspected: Review of Procedures,Records,Operations & Physical Inventory for Use,Control & Accountability of SNM PNO-II-89-066A, updates Status of Hurricane Hugo for Nuclear Facilities in Southeast.Manning of Incident Response Ctr by Region II Continuing1989-09-21021 September 1989 PNO-II-89-066A:updates Status of Hurricane Hugo for Nuclear Facilities in Southeast.Manning of Incident Response Ctr by Region II Continuing IR 05000280/19880501989-01-11011 January 1989 Partially Withheld Insp Repts 50-280/88-50 & 50-281/88-50 on 881212-16 (Ref 10CFR2.790(d) & 73.21).No Violations or Deviations Noted.Major Areas Inspected:Physical Security Program,Mgt Support,Plans,Audits,Barriers & Assessment IR 05000280/19880401988-10-26026 October 1988 Insp Repts 50-280/88-40,50-281/88-40,50-338/88-28 & 50-339/88-28 on 880926-30.No Violations or Deviations Noted. Major Areas Inspected:Control Room Habitability & Insp Followup Items ML20155F5031988-06-0808 June 1988 EN-88-048:notifies of Intent to Issue Notice of Violation & Proposed Imposition of Civil Penalty in Amount of $100,000 to Util,Based on Number of Violations,Including Failure to Adequately Evaluate Radiation Hazards Re Incore Detector ML20155F5801988-06-0808 June 1988 EN-88-047:on 880613,notice of Violation & Proposed Imposition of Civil Penalty in Amount of $50,000 Will Be Issued to Licensee.Action Based on Failure to Verify Boric Acid Piping Heat Tracing Circuits on Monthly Basis PNO-II-88-011, on 880206,slight Positive Pressure Created in Primary Drain Tank Due to Large Vol of Water & Overhead Gas Compressor Inoperable,Causing Gaseous Leak in Auxiliary Bldg.Cause Not Stated1988-02-0808 February 1988 PNO-II-88-011:on 880206,slight Positive Pressure Created in Primary Drain Tank Due to Large Vol of Water & Overhead Gas Compressor Inoperable,Causing Gaseous Leak in Auxiliary Bldg.Cause Not Stated PNO-II-87-078, on 871126,licensee Removed Unit 1 from Svc to Repair Leaking Manway Cover on Secondary Side of C Steam Generator.Unit Cooled Down & Manway Gasket Replaced. Commonwealth of Virginia Informed1987-11-30030 November 1987 PNO-II-87-078:on 871126,licensee Removed Unit 1 from Svc to Repair Leaking Manway Cover on Secondary Side of C Steam Generator.Unit Cooled Down & Manway Gasket Replaced. Commonwealth of Virginia Informed PNO-II-87-061, on 870920,automatic Trip from 100% Power Occurred.Caused by Phase to Ground Fault in B Phase at Electrical Connection on B Reactor Coolant Pump.Safety Injection Signal Reset1987-09-21021 September 1987 PNO-II-87-061:on 870920,automatic Trip from 100% Power Occurred.Caused by Phase to Ground Fault in B Phase at Electrical Connection on B Reactor Coolant Pump.Safety Injection Signal Reset PNO-II-87-053A, on 870730,State of Ny,Dept of Environ Conservation & Dept of Radiation Health Completed Survey of Miscellaneous Boxes & Equipment W/Markings from VEPCO Found in Abandoned Bldg in Springwater,Ny.No Problems Noted1987-07-30030 July 1987 PNO-II-87-053A:on 870730,State of Ny,Dept of Environ Conservation & Dept of Radiation Health Completed Survey of Miscellaneous Boxes & Equipment W/Markings from VEPCO Found in Abandoned Bldg in Springwater,Ny.No Problems Noted PNO-II-87-053, on 870728,licensee Notified That Fireman Discovered Miscellaneous Boxes & Equipment in Abandoned Bldg Outside Springwater,Ny.Matl Might Be Clean Surplus Matl Disposed of After Cancellation of North Anna 31987-07-29029 July 1987 PNO-II-87-053:on 870728,licensee Notified That Fireman Discovered Miscellaneous Boxes & Equipment in Abandoned Bldg Outside Springwater,Ny.Matl Might Be Clean Surplus Matl Disposed of After Cancellation of North Anna 3 PNO-II-87-040, on 870623,unit Manually Shut Down Following Estimated 40 Gpm Leak in Rcs.Caused by Packing on Reactor Coolant Loop Stop Valve.Licensee Preparing Unit to Go to Mode 5 to Effect Repairs1987-06-23023 June 1987 PNO-II-87-040:on 870623,unit Manually Shut Down Following Estimated 40 Gpm Leak in Rcs.Caused by Packing on Reactor Coolant Loop Stop Valve.Licensee Preparing Unit to Go to Mode 5 to Effect Repairs IR 05000280/19870111987-06-22022 June 1987 Insp Repts 50-280/87-11 & 50-281/87-11 on 870427-0501.Three Potential Enforcement Findings Noted.Major Areas Inspected: Audit Performed in Feb 1987 by Util of Industrial Distributors PNO-II-87-037, on 870607,licensee Entered 24 H Limiting Condition for Operation When Outside Recirculation Spray Pump B Failed Periodic Surveillance Test Due to High Vibration & Low Discharge Pressure.Unit Shut Down1987-06-0909 June 1987 PNO-II-87-037:on 870607,licensee Entered 24 H Limiting Condition for Operation When Outside Recirculation Spray Pump B Failed Periodic Surveillance Test Due to High Vibration & Low Discharge Pressure.Unit Shut Down IR 05000280/19870091987-05-21021 May 1987 Insp Repts 50-280/87-09 & 50-281/87-09 on 870405-0502.No Violations Identified.Major Areas Inspected:Licensee Actions on Previous Enforcement Matters,Plant Operations,Maint & Surveillance & LER Review & 10CFR21 Reviews PNO-II-87-032, updates PNO-II-87-029.Util Determined That Partial Closure of Isolation Valve Which Brought About Reactor Scram on 870516 Caused by Shearing of Valve Stem Above Backseat.Metallurgist Evaluating Break1987-05-21021 May 1987 PNO-II-87-032:updates PNO-II-87-029.Util Determined That Partial Closure of Isolation Valve Which Brought About Reactor Scram on 870516 Caused by Shearing of Valve Stem Above Backseat.Metallurgist Evaluating Break PNO-II-87-029, on 870516,unit Tripped on Low Reactor Coolant Flow Rate in Loop A.Caused by Partial Closure of Hot Loop Isolation Valve.Outage of 12 Days Planned to Correct Problem.Resident Inspector Will Provide Followup1987-05-18018 May 1987 PNO-II-87-029:on 870516,unit Tripped on Low Reactor Coolant Flow Rate in Loop A.Caused by Partial Closure of Hot Loop Isolation Valve.Outage of 12 Days Planned to Correct Problem.Resident Inspector Will Provide Followup ML20209E1721987-03-30030 March 1987 Exam Rept 50-280/OL-87-01 Administered on 870209-11.Exam Results:Two Reactor Operators & Three Senior Reactor Operators Passed Exams.Written Exam & Answer Key Encl ML20205Q1481987-03-24024 March 1987 Notice of Violation from Insp on 870209-13 IR 05000280/19870031987-03-20020 March 1987 Insp Repts 50-280/87-03 & 50-281/87-03 on 870209-13. Violations Noted:Failure to Adhere to Radiation Control Procedures,To Comply W/Low Level Radwaste Disposal Facility Agreement State License Conditions & W/Dot Regulations IR 05000280/19870041987-03-0606 March 1987 Insp Repts 50-280/87-04 & 50-281/87-04 on 870201-28.No Violations or Deviations Noted.Major Areas Inspected:Plant Operations,Maint,Surveillance,Licensee Action on Previous Enforcement Matters & TMI Action Item Closeout ML20207T5821987-03-0202 March 1987 Notice of Violation from Insp on 861113-20 & 870209 IR 05000281/19860361987-02-23023 February 1987 Insp Rept 50-281/86-36 on 861113-20 & 870209.Violations Noted:Failure to Properly Valve Penetrations for Type a Test in Accordance w/10CFR50,App J.Four Unresolved Items Identified PNO-II-87-011A, on 870213,leak Discovered in Svc Water Line Below Floor of Unit 2 Turbine Bldg.Util Will Replace Defective Portion of Unit 2 Side of Svc Water Piping.Unit 1 Side of Same Sys Tested & Acceptable1987-02-18018 February 1987 PNO-II-87-011A:on 870213,leak Discovered in Svc Water Line Below Floor of Unit 2 Turbine Bldg.Util Will Replace Defective Portion of Unit 2 Side of Svc Water Piping.Unit 1 Side of Same Sys Tested & Acceptable IR 05000280/19870021987-02-18018 February 1987 Insp Repts 50-280/87-02 & 50-281/87-02 on 870202-06.No Violations or Deviations Noted.Major Areas Inspected:Exam Onsite in Area of Info Notices,Unplanned Radiological Releases,Effluent Monitors & Effluent Reporting IR 05000280/19860411987-02-12012 February 1987 Insp Repts 50-280/86-41 & 50-281/86-41 on 861207-870131.No Violations or Deviations Noted.Major Areas Inspected:Action on Previous Enforcement Matters,Plant Operations,Maint & Surveillance & IE Bulletin Followup PNO-II-87-011, heatup of Unit 1 Beginning in Preparation for Return to Svc.Restart of Unit 2 Scheduled 2 to 3 Wks Later.Licensee Informed of Region II Acceptance of Restart Plan in 870210 Augmented Insp Team Rept1987-02-12012 February 1987 PNO-II-87-011:heatup of Unit 1 Beginning in Preparation for Return to Svc.Restart of Unit 2 Scheduled 2 to 3 Wks Later.Licensee Informed of Region II Acceptance of Restart Plan in 870210 Augmented Insp Team Rept ML20211C5161987-02-10010 February 1987 Augmented Insp Repts 50-280/86-42 & 50-281/86-42 on 861209- 870114.Violation Noted:Failure to Fully Follow Procedures, Provide Adequate Instruction for & Document Performance of Maint Operations IR 05000280/19860421987-02-10010 February 1987 Augmented Insp Repts 50-280/86-42 & 50-281/86-42 on 861209- 870114.Violation Noted:Failure to Fully Follow Procedures, Provide Adequate Instruction for & Document Performance of Maint Operations ML20211C4781987-02-10010 February 1987 Notice of Violation from Insp on 861209-870114 IR 05000280/19870011987-02-0404 February 1987 Insp Repts 50-280/87-01 & 50-281/87-01 on 870112-15.No Violations or Deviations Noted.Major Areas Inspected:Fire Protection Sys Interaction Events Associated w/861209 Feedwater Pipe Rupture ML20212F9001987-01-0606 January 1987 Notice of Violation from Insp on 861020-23 & 27-31 IR 05000280/19860381986-12-29029 December 1986 Insp Repts 50-280/86-38 & 50-281/86-38 on 861102-1206.No Violations or Deviations Noted.Major Areas Inspected:Plant Operations,Maint & Surveillance,Outages,Followup on Region Identified Items & Insp of Dry Spent Nuclear Fuel Facility IR 05000280/19860401986-12-23023 December 1986 Insp Repts 50-280/86-40 & 50-281/86-40 on 861129-1203.No Violations or Deviations Noted.Major Areas inspected:post- Refueling Startup Tests,Thermal Power Determination & RCS Leakage Measurements PNO-II-86-091D, licensee Repts Two Addl Deaths Occurred as Result of Injuries from 861209 Accident.Caused by Break of 18-inch Feedwater Sys Suction Line Scalding Eight Workers W/Hot Water & Steam.Number of Dead Now Four1986-12-16016 December 1986 PNO-II-86-091D:licensee Repts Two Addl Deaths Occurred as Result of Injuries from 861209 Accident.Caused by Break of 18-inch Feedwater Sys Suction Line Scalding Eight Workers W/Hot Water & Steam.Number of Dead Now Four PNO-II-86-091C, ultrasonic Testing of Unit 1 Piping Elbow Disclosed Min Pipe Wall Thickness of 0.16 Inch.Design Specs Require 0.36 Inch Min Thickness.Ultrasonic Testing Continuing1986-12-15015 December 1986 PNO-II-86-091C:ultrasonic Testing of Unit 1 Piping Elbow Disclosed Min Pipe Wall Thickness of 0.16 Inch.Design Specs Require 0.36 Inch Min Thickness.Ultrasonic Testing Continuing 1999-09-08 |
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November 16, 1993 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PNO-II-93-062 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 II staff on this date.
Fncility Licensee Emergency Classification Virginia Power Co. Notification of Unusual Event Surry 2 \ Alert Surry, Virginia -
Site Area Emergency Dockets: 50-281 .
General Emergency X Not Applicable
Subject:
UNSCHEDULED SHUTDOWN IN EXCESS OF 72 HOURS At 8:19 p.m. on November 15, 1993, Unit 2 tripped from 95% reactor power.
The steam-flow / feed-flow mismatch coincident with low steam generator (SG) level reactor trip occurred when all three main feedwater regulating valves (FWRV) closed. The FWRV closure resulted from a loss of control power to the "A" train solenoids when their supply breaker tripped open.
Plant response to the transient was as expected except the "A" auxiliary feedwater (AfW) pump had to be secured. The AFW pump will be repacked and the cause for the breaker trip will be investigated and repaired.
Since the May 1993 refueling outage startup, the unit has operated at power reductions due to level oscillations in the C SG. The licensee has elected to take the unit to cold-shutdown to investigate the cause of the SG level oscillations. The licensee anticipates that the outage will last approximately 17 days.
The Senior Resident Inspector was onsite performing a backshift inspection at the time of the trip. The SRI reviewed the licensee evaluations and activities and will continue to review the corrective actions.
The State of Virginia was informed.
This information is current as of 9:00 a.m. on November 16, 1993.
Contact:
G. A. BELISLE (404)331-4196 1300 h 9312140215 931116 PDR ILE PNO-II-93-062 PDR h
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