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Category:LICENSEE EVENT REPORT (SEE ALSO AO
MONTHYEARML20029D6301994-05-0505 May 1994 LER 94-003-00:on 940405,reactor Tripped Due to Main Power Transformer Failure.Corrective Actions:Detailed Investigation Performed for Collateral Damage & Isophase Bus Cleaned & inspected.W/940505 Ltr ML20029D2351994-04-29029 April 1994 LER 94-006-00:on 940330,discovered That Braidwood Cooling Lake Hydrographic Survey Was Not Completed within Required Time.Cause Was Personnel Error.Corrective Action: Surveillance Was Completed within 24 hours.W/940429 Ltr ML20029D6121994-04-29029 April 1994 LER 94-002-00:on 940331,discovered 2A Auxiliary Feedwater Pump Auto Starting.Caused by Procedural Deficiency. Auxiliary Feedwater Pump 2A Secured by Placing Control Switch in Pull Out position.W/940429 Ltr ML20046D5971993-08-19019 August 1993 LER 93-005-00:on 930720,missed Surveillance on Containment Isolation Valve Occurred Due to Personnel Error & Mgt Deficiency.Enhanced Procedures,Training & Counseling. W/930819 Ltr ML20044F5531993-05-19019 May 1993 LER 93-003-00:on 930419,TS Violated Due to Source Range Reactor Trip Capability Being Blocked.Caused by Personnel Error & Procedural Deficiency.Individuals Involved Counseled & Procedure developed.W/930518 Ltr ML20044D2071993-05-14014 May 1993 LER 93-002-00:on 930414,unplanned ESF Actuation Occurred When All Four SI Accumulator Isolation Valves Closed & Accumulator Pressure Reduced.Caused by Mgt Deficiency. Training Will Be conducted.W/930514 Ltr ML20024G7411991-04-24024 April 1991 LER 91-005-00:on 910326,main Control Room Ventilation Sys Shifted to Emergency Mode of Operation Due to Momentary Fluctuation in Voltage Available to Monitor.Lightning Protection Sys Being modified.W/910424 Ltr ML20028H8631991-01-24024 January 1991 LER 90-023-00:on 901230,generator Neutral Ground Overcurrent Protective Relay Actuated & Tripped Main Generator.Caused by Internal Generator Defect.Main Generator Disassembled & Rotor Removed to Locate ground.W/910124 Ltr ML20028G9151990-09-24024 September 1990 LER 90-015-00:on 900827,auxiliary Bldg Vent Stack Grab Sample Missed.Caused by Personnel Error & Deficient Work Practices.Training Provided,Program Modified & Station Reviewing Nonroutine Surveillance process.W/900924 Ltr ML20043H4071990-06-20020 June 1990 LER 90-007-00:on 900523,pressurizer Pressure Channel 458 Failed Low & Channel 455 Deviated in Excess of Remaining Two Channels.Caused by Defective Wire on Internal Portion of Pressure Transmitter.Transmitter replaced.W/900621 Ltr ML20043G6051990-06-14014 June 1990 LER 90-008-00:on 900517,unit at Power Permissive Circuit Actuated on Train a of Solid State Protection Sys.Caused by Procedural Deficiency in That Switch Rotation Not Specified. Procedure revised.W/900614 Ltr ML20043A6571990-05-16016 May 1990 LER 90-006-00:on 891204 & 900416,diesel Generator 1B Experienced Slow Start.Caused by Crisscrossed Starting Airlines for Cylinders 6L & 9L.Starting Airlines Reconnected & Verified to correct.W/900516 Ltr ML20043A6611990-05-14014 May 1990 LER 90-004-00:on 900416,diesel Generator 2A Speed Oscillated Prior to Maint Teardown.Caused by Component Failure.Resistors Replaced & Placed on 3-yr Replacement frequency.W/900516 Ltr ML20042G7041990-05-11011 May 1990 LER 90-005-00:on 900413,determined That Pressures for MSIVs a & D Were Outside Acceptance Criteria of Procedure.Caused by Procedural Deficiencies.Procedures Being Revised to Reflect Values of 4,800 Psig to 6,000 psig.W/900511 Ltr ML20042F5441990-05-0404 May 1990 LER 90-003-00:on 900405,inadvertent Train B Safety Injection Initiation Signal Occurred Due to Programmatic Deficiency. Training Developed & Lens Evaluated for Replacement. W/900503 Ltr ML20006E4811990-02-0909 February 1990 LER 90-002-03:on 900119,discovered That Flanges Not Added to Procedure 1BwOS, Primary Containment Integrity Verification of Outside Containment Isolation Devices. Caused by Program Weakness.Training held.W/900216 Ltr ML20006E4041990-02-0202 February 1990 LER 90-001-00:on 900112,reactor Tripped During Dc Ground Isolation Activities When Auxiliary Relay Energized,Causing Turbine Governor & Reheat Interceptor Valves to Close.Caused by Increasing Steam Pressure.Valves closed.W/900206 Ltr ML19354E0141990-01-22022 January 1990 LER 89-020-00:on 891223,failure to Verify Safety Injection Accumulator Boron Concentration within Specified Time.Caused by Programmatic Deficiency.Procedure Revised to Include Action Requirement sheet.W/900122 Ltr ML19354E0131990-01-16016 January 1990 LER 89-008-00:on 891228,equipment Attendant Discovered Refueling Water Storage Tank Vent Line Temp Less than 35 F. Caused by Preservice Deficiency.Storage Tank Vent Path Temp Verified at 36 F.W/900119 Ltr ML20006B2081990-01-12012 January 1990 LER 89-019-00:on 891219,discovered That Procedure Did Not Adequately Test Response Times for High Steamline Pressure Rate Steamline Isolation Signal.Caused by Deficient Procedure.Procedures Re Response Time revised.W/900112 Ltr ML20005F9611990-01-0808 January 1990 LER 89-017-00:on 891206,gas Detector Channel of Process Radiation Monitor Experienced Spike,Resulting in Alert Alarm.On 891210,spike on Channel Resulted in High Radiation Alarm.Caused by Failed detector.W/900109 Ltr ML20005E8561990-01-0202 January 1990 LER 89-018-00:on 891215,as Lead on volt-ohm Meter Landed, Containment Bldg Fuel Handling Incident Area Radiation Monitor Went Into Alert Alarm & Interlock Actuation.Caused by Procedure Deficiency.Signal reset.W/900102 Ltr ML20005E7851989-12-29029 December 1989 LER 89-016-00:on 891201,RHR Pump Suction Relief Valve Premature Actuation Occurred & Failed to Reseat.Caused by Deficient Work Practices & Pesonnel Error.Maint Procedures Reviewed.Training conducted.W/891229 Ltr ML19354E1621989-12-18018 December 1989 LER 87-006-01:on 870120,4 H Fire Watch Patrol Detained by Radiation Chemistry Personnel Due to Not Signing Latest Radiation Work Permit & on 870131,did Not Start Route.Caused by Personnel Error.Personnel retrained.W/900110 Ltr ML20005D6801989-12-0808 December 1989 LER 89-007-00:on 891110,w/auxiliary Feedwater Pump 2B Pump Control Switch in Pull Out Per Stated Reasons,Automatic Initiation of Pump Sys Unavailable for 6 Minutes.Caused by Procedural Deficiency.Keys to Be Color coded.W/891208 Ltr ML19332E6261989-12-0202 December 1989 LER 89-015-00:on 891020,sample Canisters for Auxiliary Bldg Vent Stack Radiation Monitor Removed & Not Analyzed within 48 H.Caused by Programmatic Deficiencies & Personnel Error. Procedures & Training Programs revised.W/891204 Ltr ML19332E5121989-11-29029 November 1989 LER 89-014-00:on 891030,inadvertent Safety Injection Occurred on Train B During Installation of Card Holders. Caused by Personnel Error Design Deficiency.Sys Mod Request submitted.W/891129 Ltr ML19332E6411989-11-22022 November 1989 LER 89-002-01:on 890416,main Steamline Low Pressure Reactor Trip,Safety Injection & Main Steamline Isolation Occurred. Caused by Mgt & Procedural Deficiencies.Formal Policy on Use of Extra Operator During Startup developed.W/891129 Ltr ML19332C5681989-11-17017 November 1989 LER 89-006-00:on 890314,nonlicensed Operator Placed Eductor 2B Spray Additive Tank Suction Throttle Valve 2CS021B in Locked Open Position.Caused by Incorrect Valve Labeling. Valves to Be Provided W/High Visibility labels.W/891117 Ltr ML19327C2591989-11-15015 November 1989 LER 89-012-00:on 891016,momentary Loss of Power to Fuel Handling Bldg (Fhb) Area Radiation Monitor Caused Fhb Charcoal Booster Fan to Auto Start.Caused by Personnel Error.Fan Secured & Isolation Signal reset.W/891114 Ltr ML19354D4711989-11-0303 November 1989 LER 89-013-00:on 891005,discrepancy W/Design of Steam Generator Blowdown Sys Identified,Minimizing Auxiliary Feedwater Flow Requirements.Caused by Preservice Design Deficiency.Temporary Design Changes made.W/891103 Ltr ML19354D4721989-11-0101 November 1989 LER 89-005-00:on 891002,discovered That Tech Spec Action Statement Was Not Entered When safety-related Bus Was Removed from Svc.Caused by Procedural deficiency.Out-of-svc Procedure Will Be revised.W/891101 Ltr ML19325D5191989-10-20020 October 1989 LER 89-011-00:on 890920,high Head Safety Injection Valve 1SI8801A Not Capable of Being Powered by Operable Emergency Power Source.Caused by Diesel Generator 1A Being Out of Svc. Policy Statement Issued & Program revised.W/891020 Ltr ML19325D4851989-10-13013 October 1989 LER 89-010-00:on 890915,measured Leakrate of Hydrogen Analyzer Containment Isolation Valve Was Larger W/Valve Indicating Closed.Caused by Incorrect Labeling of Coil Leads.Valve Replaced W/Different Model valve.W/891012 Ltr ML19325C2851989-10-0303 October 1989 LER 89-004-00:on 890907,reactor Trip Occurred as Result of Lightning Induced Voltage Transient Affecting Rod Control Sys.Caused by Lightning Striking Containment.Rod Control Sys Devices reset.W/891006 Ltr 1994-05-05
[Table view] Category:RO)
MONTHYEARML20029D6301994-05-0505 May 1994 LER 94-003-00:on 940405,reactor Tripped Due to Main Power Transformer Failure.Corrective Actions:Detailed Investigation Performed for Collateral Damage & Isophase Bus Cleaned & inspected.W/940505 Ltr ML20029D2351994-04-29029 April 1994 LER 94-006-00:on 940330,discovered That Braidwood Cooling Lake Hydrographic Survey Was Not Completed within Required Time.Cause Was Personnel Error.Corrective Action: Surveillance Was Completed within 24 hours.W/940429 Ltr ML20029D6121994-04-29029 April 1994 LER 94-002-00:on 940331,discovered 2A Auxiliary Feedwater Pump Auto Starting.Caused by Procedural Deficiency. Auxiliary Feedwater Pump 2A Secured by Placing Control Switch in Pull Out position.W/940429 Ltr ML20046D5971993-08-19019 August 1993 LER 93-005-00:on 930720,missed Surveillance on Containment Isolation Valve Occurred Due to Personnel Error & Mgt Deficiency.Enhanced Procedures,Training & Counseling. W/930819 Ltr ML20044F5531993-05-19019 May 1993 LER 93-003-00:on 930419,TS Violated Due to Source Range Reactor Trip Capability Being Blocked.Caused by Personnel Error & Procedural Deficiency.Individuals Involved Counseled & Procedure developed.W/930518 Ltr ML20044D2071993-05-14014 May 1993 LER 93-002-00:on 930414,unplanned ESF Actuation Occurred When All Four SI Accumulator Isolation Valves Closed & Accumulator Pressure Reduced.Caused by Mgt Deficiency. Training Will Be conducted.W/930514 Ltr ML20024G7411991-04-24024 April 1991 LER 91-005-00:on 910326,main Control Room Ventilation Sys Shifted to Emergency Mode of Operation Due to Momentary Fluctuation in Voltage Available to Monitor.Lightning Protection Sys Being modified.W/910424 Ltr ML20028H8631991-01-24024 January 1991 LER 90-023-00:on 901230,generator Neutral Ground Overcurrent Protective Relay Actuated & Tripped Main Generator.Caused by Internal Generator Defect.Main Generator Disassembled & Rotor Removed to Locate ground.W/910124 Ltr ML20028G9151990-09-24024 September 1990 LER 90-015-00:on 900827,auxiliary Bldg Vent Stack Grab Sample Missed.Caused by Personnel Error & Deficient Work Practices.Training Provided,Program Modified & Station Reviewing Nonroutine Surveillance process.W/900924 Ltr ML20043H4071990-06-20020 June 1990 LER 90-007-00:on 900523,pressurizer Pressure Channel 458 Failed Low & Channel 455 Deviated in Excess of Remaining Two Channels.Caused by Defective Wire on Internal Portion of Pressure Transmitter.Transmitter replaced.W/900621 Ltr ML20043G6051990-06-14014 June 1990 LER 90-008-00:on 900517,unit at Power Permissive Circuit Actuated on Train a of Solid State Protection Sys.Caused by Procedural Deficiency in That Switch Rotation Not Specified. Procedure revised.W/900614 Ltr ML20043A6571990-05-16016 May 1990 LER 90-006-00:on 891204 & 900416,diesel Generator 1B Experienced Slow Start.Caused by Crisscrossed Starting Airlines for Cylinders 6L & 9L.Starting Airlines Reconnected & Verified to correct.W/900516 Ltr ML20043A6611990-05-14014 May 1990 LER 90-004-00:on 900416,diesel Generator 2A Speed Oscillated Prior to Maint Teardown.Caused by Component Failure.Resistors Replaced & Placed on 3-yr Replacement frequency.W/900516 Ltr ML20042G7041990-05-11011 May 1990 LER 90-005-00:on 900413,determined That Pressures for MSIVs a & D Were Outside Acceptance Criteria of Procedure.Caused by Procedural Deficiencies.Procedures Being Revised to Reflect Values of 4,800 Psig to 6,000 psig.W/900511 Ltr ML20042F5441990-05-0404 May 1990 LER 90-003-00:on 900405,inadvertent Train B Safety Injection Initiation Signal Occurred Due to Programmatic Deficiency. Training Developed & Lens Evaluated for Replacement. W/900503 Ltr ML20006E4811990-02-0909 February 1990 LER 90-002-03:on 900119,discovered That Flanges Not Added to Procedure 1BwOS, Primary Containment Integrity Verification of Outside Containment Isolation Devices. Caused by Program Weakness.Training held.W/900216 Ltr ML20006E4041990-02-0202 February 1990 LER 90-001-00:on 900112,reactor Tripped During Dc Ground Isolation Activities When Auxiliary Relay Energized,Causing Turbine Governor & Reheat Interceptor Valves to Close.Caused by Increasing Steam Pressure.Valves closed.W/900206 Ltr ML19354E0141990-01-22022 January 1990 LER 89-020-00:on 891223,failure to Verify Safety Injection Accumulator Boron Concentration within Specified Time.Caused by Programmatic Deficiency.Procedure Revised to Include Action Requirement sheet.W/900122 Ltr ML19354E0131990-01-16016 January 1990 LER 89-008-00:on 891228,equipment Attendant Discovered Refueling Water Storage Tank Vent Line Temp Less than 35 F. Caused by Preservice Deficiency.Storage Tank Vent Path Temp Verified at 36 F.W/900119 Ltr ML20006B2081990-01-12012 January 1990 LER 89-019-00:on 891219,discovered That Procedure Did Not Adequately Test Response Times for High Steamline Pressure Rate Steamline Isolation Signal.Caused by Deficient Procedure.Procedures Re Response Time revised.W/900112 Ltr ML20005F9611990-01-0808 January 1990 LER 89-017-00:on 891206,gas Detector Channel of Process Radiation Monitor Experienced Spike,Resulting in Alert Alarm.On 891210,spike on Channel Resulted in High Radiation Alarm.Caused by Failed detector.W/900109 Ltr ML20005E8561990-01-0202 January 1990 LER 89-018-00:on 891215,as Lead on volt-ohm Meter Landed, Containment Bldg Fuel Handling Incident Area Radiation Monitor Went Into Alert Alarm & Interlock Actuation.Caused by Procedure Deficiency.Signal reset.W/900102 Ltr ML20005E7851989-12-29029 December 1989 LER 89-016-00:on 891201,RHR Pump Suction Relief Valve Premature Actuation Occurred & Failed to Reseat.Caused by Deficient Work Practices & Pesonnel Error.Maint Procedures Reviewed.Training conducted.W/891229 Ltr ML19354E1621989-12-18018 December 1989 LER 87-006-01:on 870120,4 H Fire Watch Patrol Detained by Radiation Chemistry Personnel Due to Not Signing Latest Radiation Work Permit & on 870131,did Not Start Route.Caused by Personnel Error.Personnel retrained.W/900110 Ltr ML20005D6801989-12-0808 December 1989 LER 89-007-00:on 891110,w/auxiliary Feedwater Pump 2B Pump Control Switch in Pull Out Per Stated Reasons,Automatic Initiation of Pump Sys Unavailable for 6 Minutes.Caused by Procedural Deficiency.Keys to Be Color coded.W/891208 Ltr ML19332E6261989-12-0202 December 1989 LER 89-015-00:on 891020,sample Canisters for Auxiliary Bldg Vent Stack Radiation Monitor Removed & Not Analyzed within 48 H.Caused by Programmatic Deficiencies & Personnel Error. Procedures & Training Programs revised.W/891204 Ltr ML19332E5121989-11-29029 November 1989 LER 89-014-00:on 891030,inadvertent Safety Injection Occurred on Train B During Installation of Card Holders. Caused by Personnel Error Design Deficiency.Sys Mod Request submitted.W/891129 Ltr ML19332E6411989-11-22022 November 1989 LER 89-002-01:on 890416,main Steamline Low Pressure Reactor Trip,Safety Injection & Main Steamline Isolation Occurred. Caused by Mgt & Procedural Deficiencies.Formal Policy on Use of Extra Operator During Startup developed.W/891129 Ltr ML19332C5681989-11-17017 November 1989 LER 89-006-00:on 890314,nonlicensed Operator Placed Eductor 2B Spray Additive Tank Suction Throttle Valve 2CS021B in Locked Open Position.Caused by Incorrect Valve Labeling. Valves to Be Provided W/High Visibility labels.W/891117 Ltr ML19327C2591989-11-15015 November 1989 LER 89-012-00:on 891016,momentary Loss of Power to Fuel Handling Bldg (Fhb) Area Radiation Monitor Caused Fhb Charcoal Booster Fan to Auto Start.Caused by Personnel Error.Fan Secured & Isolation Signal reset.W/891114 Ltr ML19354D4711989-11-0303 November 1989 LER 89-013-00:on 891005,discrepancy W/Design of Steam Generator Blowdown Sys Identified,Minimizing Auxiliary Feedwater Flow Requirements.Caused by Preservice Design Deficiency.Temporary Design Changes made.W/891103 Ltr ML19354D4721989-11-0101 November 1989 LER 89-005-00:on 891002,discovered That Tech Spec Action Statement Was Not Entered When safety-related Bus Was Removed from Svc.Caused by Procedural deficiency.Out-of-svc Procedure Will Be revised.W/891101 Ltr ML19325D5191989-10-20020 October 1989 LER 89-011-00:on 890920,high Head Safety Injection Valve 1SI8801A Not Capable of Being Powered by Operable Emergency Power Source.Caused by Diesel Generator 1A Being Out of Svc. Policy Statement Issued & Program revised.W/891020 Ltr ML19325D4851989-10-13013 October 1989 LER 89-010-00:on 890915,measured Leakrate of Hydrogen Analyzer Containment Isolation Valve Was Larger W/Valve Indicating Closed.Caused by Incorrect Labeling of Coil Leads.Valve Replaced W/Different Model valve.W/891012 Ltr ML19325C2851989-10-0303 October 1989 LER 89-004-00:on 890907,reactor Trip Occurred as Result of Lightning Induced Voltage Transient Affecting Rod Control Sys.Caused by Lightning Striking Containment.Rod Control Sys Devices reset.W/891006 Ltr 1994-05-05
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217G9961999-10-14014 October 1999 SER Accepting First 10-year Interval Inservice Insp Requests for Relief for Plant,Units 1 & BW990066, Monthly Operating Repts for Sept 1999 for Braidwood Station, Units 1 & 2.With1999-09-30030 September 1999 Monthly Operating Repts for Sept 1999 for Braidwood Station, Units 1 & 2.With ML20217P6351999-09-29029 September 1999 Non-proprietary Rev 6 to HI-982083, Licensing Rept for Spent Fuel Rack Installation at Byron & Braidwood Nuclear Stations ML20217A1691999-09-22022 September 1999 Part 21 Rept Re Engine Sys,Inc Controllers,Manufactured Between Dec 1997 & May 1999,that May Have Questionable Soldering Workmanship.Caused by Inadequate Personnel Training.Sent Rept to All Nuclear Customers ML20212A7441999-09-10010 September 1999 Safety Evaluation Concluding That Alternatives Contained in Relief Request 12R-07 Provide Acceptable Level of Quality & Safety BW990056, Monthly Operating Repts for Aug 1999 for Braidwood Station, Units 1 & 2.With1999-08-31031 August 1999 Monthly Operating Repts for Aug 1999 for Braidwood Station, Units 1 & 2.With ML20210R6421999-08-13013 August 1999 ISI Outage Rept for A2R07 ML20210U8111999-08-0404 August 1999 SER Granting Licensee Relief Requests VR-1,VR-3 & Portion of VR-2 Pursuant to 10CFR50.55a(a)(3)(ii).Relief Request VR-4 Does Not Require Explicit NRC Approval Because Relief Applies to Valves Not Required by 10CFR50.55a BW990048, Monthly Operating Repts for Jul 1999 for Braidwood Station, Units 1 & 2.With1999-07-31031 July 1999 Monthly Operating Repts for Jul 1999 for Braidwood Station, Units 1 & 2.With ML20210K9861999-07-30030 July 1999 Safety Evaluation Accepting Licensee 60-day Response to GL 96-05, Periodic Verification of Design-Basis Capability of Safety-Related Movs ML20216D3841999-07-12012 July 1999 Revised NFM9900022, Braidwood Unit 2 Cycle 8 COLR in ITS Format & W(Z) Function M990002, Revised NFM9900022, Braidwood Unit 2 Cycle 8 COLR in ITS Format & W(Z) Function1999-07-12012 July 1999 Revised NFM9900022, Braidwood Unit 2 Cycle 8 COLR in ITS Format & W(Z) Function BW990038, Monthly Operating Repts for June 1999 for Braidwood Station, Units 1 & 2.With1999-06-30030 June 1999 Monthly Operating Repts for June 1999 for Braidwood Station, Units 1 & 2.With BW990029, Monthly Operating Repts for May 1999 for Braidwood Stations, Units 1 & 2.With1999-05-31031 May 1999 Monthly Operating Repts for May 1999 for Braidwood Stations, Units 1 & 2.With ML20209H7481999-05-31031 May 1999 Revised Monthly Operating Repts for May 1999 for Braidwood Station,Units 1 & 2 ML20207B6481999-05-25025 May 1999 SER Accepting Revised SGTR Analysis for Byron & Braidwood Stations.Revised Analysis Was Submitted to Support SG Replacement at Unit 1 of Each Station ML20195B2591999-05-19019 May 1999 Rev 66a to CE-1-A,consisting of Proposed Changes to QAP for Dnps,Qcs,Znps,Lcs,Byron & Braidwood Stations BW990021, Monthly Operating Repts for Apr 1999 for Braidwood Station, Units 1 & 2.With1999-04-30030 April 1999 Monthly Operating Repts for Apr 1999 for Braidwood Station, Units 1 & 2.With BW990016, Monthly Operating Repts for Mar 1999 for Braidwood Generating Station,Units 1 & 2.With1999-03-31031 March 1999 Monthly Operating Repts for Mar 1999 for Braidwood Generating Station,Units 1 & 2.With ML20205C5101999-03-21021 March 1999 Revised Safety Evaluation Supporting Improved TS Amends Issued by NRC on 981222 to FOLs NPF-37,NPF-66,NPF-72 & NPF-77.Revised Pages Include Editorial Corrections ML20196A0721999-03-16016 March 1999 Cycle 8 COLR in ITS Format & W(Z) Function ML20207J4371999-03-0808 March 1999 ISI Outage Rept for A1R07 ML20204H9941999-03-0303 March 1999 Non-proprietary Rev 4 to HI-982083, Licensing Rept for Spent Fuel Rack Installation at Byron & Braidwood Nuclear Stations BW990010, Monthly Operating Repts for Feb 1999 for Braidwood Generating Station,Units 1 & 2.With1999-02-28028 February 1999 Monthly Operating Repts for Feb 1999 for Braidwood Generating Station,Units 1 & 2.With ML20206U9011999-02-15015 February 1999 COLR for Braidwood Unit 2 Cycle 7. Page 1 0f 13 of Incoming Submittal Was Not Included BW990004, Monthly Operating Repts for Jan 1999 for Braidwood Generating Station,Units 1 & 2.With1999-01-31031 January 1999 Monthly Operating Repts for Jan 1999 for Braidwood Generating Station,Units 1 & 2.With ML20205M7061998-12-31031 December 1998 Unicom Corp 1998 Summary Annual Rept. with BW990001, Monthly Operating Repts for Dec 1998 for Braidwood Generating Station,Units 1 & 2.With1998-12-31031 December 1998 Monthly Operating Repts for Dec 1998 for Braidwood Generating Station,Units 1 & 2.With ML20206B4001998-12-31031 December 1998 Annual & 30-Day Rept of ECCS Evaluation Model Changes & Errors for Byron & Braidwood Stations ML20206U9081998-12-17017 December 1998 Cycle 8 COLR in ITS Format & W(Z) Function BW980076, Monthly Operating Repts for Nov 1998 for Braidwood Generating Station,Units 1 & 2.With1998-11-30030 November 1998 Monthly Operating Repts for Nov 1998 for Braidwood Generating Station,Units 1 & 2.With ML20196A4191998-11-19019 November 1998 Safety Evaluation Accepting QA TR CE-1-A,Rev 66 Re Changes in Independent & Onsite Review Organization by Creating NSRB ML20195D3561998-10-31031 October 1998 Monthly Operating Repts for Oct 1998 for Braidwood Generating Station,Units 1 & 2.With ML20155B6711998-10-26026 October 1998 Safety Evaluation Accepting Requests for Relief Associated with Second 10-yr Interval ISI Program Plan ML20207H7671998-10-0505 October 1998 Rv Weld Chemistry & Initial Rt Ndt ML20154D4401998-10-0202 October 1998 Safety Evaluation Authorizing Second 10-yr Interval ISI Program Request for Relief 12R-30 for Plant,Units 1 & 2 ML20155C2601998-09-30030 September 1998 Monthly Operating Repts for Sept 1998 for Braidwood Generating Station,Units 1 & 2 ML20195F5911998-09-11011 September 1998 Special Rept:On 980812,addl Unseated Wires Were Discovered. Cause Is Unknown at Present Time.Util Evaluated Number of Unseated/Ineffective Wires & Determined Effect on Containment Structural Integrity.Commitments,Encl ML20196B3711998-09-0808 September 1998 Cycle 8 Operating Limits Rept (Olr) ML20151X6671998-08-31031 August 1998 Monthly Operating Repts for Aug 1998 for Braidwood Generating Station,Units 1 & 2.With ML20238F3281998-08-31031 August 1998 SER Approving Second 10-year Interval Inservice Insp Program Request for Relief 12R-14 for Braidwood Station,Units 1 & 2 ML20237E2331998-08-21021 August 1998 Revised Pages of Section 20 of Rev 66 to CE-1-A, QA Topical Rept ML20237A1091998-07-31031 July 1998 Monthly Operating Repts for July 1998 for Braidwood Generating Station,Unit 1 & 2 ML20236N7001998-06-30030 June 1998 Monthly Operating Repts for June 1998 for Braidwood Generating Station,Units 1 & 2 ML20198A0151998-06-18018 June 1998 10CFR50.59 Summary Rept 960619 Through 980618, Vols I & Ii,Consisting of Descriptions & SE Summaries for Changes to Procedural UFSAR Changes,Tests & Experiments & FP Rept.Without Fp,Rept ML20249A5451998-05-31031 May 1998 Monthly Operating Repts for May 1998 for Braidwood Generating Station Units 1 & 2 ML20247F7711998-05-0808 May 1998 Special Rept:On 980403 & 980503 Seismic Monitoring Sys Was Declared Inoperable.Caused by 5-volt Power Supply & Regulator Card Failure.Imd & Sys Engineering Are Continuing to Identify & Resolve Problems So Sys Can Be Operable ML20247L7591998-04-30030 April 1998 Monthly Operating Repts for Apr 1998 for Braidwood Generating Station,Units 1 & 2 ML20217K6331998-04-20020 April 1998 Safety Evaluation Accepting Methodology & Criteria Used in Generating Flaw Evaluation Charts for RPV of Braidwood IAW Section XI of ASME Code ML20216C6621998-03-31031 March 1998 Monthly Operating Repts for Mar 1998 for Braidwood Generating Station,Units 1 & 2 1999-09-30
[Table view] |
Text
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I
.L' s Conunempechh Edison '
'I - . ' Breldwood Nutlear Power Station -
i* Moute C1, Box 84
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Brecoville, Illinob 00407 j ,' s Telephone 815/468-2001 ~ ;
i
'i j
December 4,1989 -
BW/89-3119 I>
- 10 U. S. Nuclear Regulatory Commission j Document Control Desk i Washington, D.C. 20555
.l
Dear Sir:
. The enclosed Licensee Event Report from Braldwood Generating l Station is being transmitted to you in accordance with the requirements of :
10CFR50.73(aX2XI) which requires a 30-day written report.
This report is number 89-015-00; Docket No. 50-456. l t
Very truly yours, l
<,4
, 'f
. . E. Querto
. . Station Manager 1
- '
Braidwood Nuclear Station .
REQ /JDW/jfe j t (7126z)
Enclosure:
Licensee Event Report No. 89-015-00 -,
t L
l cc: . NRC RegionIll Administrator NRC Resident Inspector INPO Record Center CECO Distribution List *
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. 1 LICENSEE EVENT REPORT (LER) j
, rm M R facilit-y Name '(1) Docket Number (2) . Pane (3) ;
ita W sad unit 1 el si el el el di si s 1 l efl e l s !
fitle (4) Missed Isotopic Analysis for Particulate $ ample Cartridge as a Result of Programmatic Deficiencies )
and Personnel Error Ewent hate f5) LER " r (s) -
Regert Date (7) Other Facilities Involved (8)
Year Year /// Sequential /// Revision Month Day Year Faelitiv 's _Dotket E mberia)
[ Month Day fff fff
/// haber /// haber
. Hone _pl si el el_el l I il a 21 e el e _ s1. 9 ei1Is ei e 1l2 el 2 al 9 el si el el el 1 1 THIS REPORT !$ $UBMITTED PUR$UANT TO THE REQUIREMENTS Of 10CFR I (Check one er more of the followinn) (II)
- 20.402(b) _, 20.40$(c)- _ 50.D(a)(2)(iv) _ 73.71(b)
PONER __ 20.40$(a)(1)(1) __ 50.36(c)(1) _ 501r3(a)(2)(v) _ 73.71(c) j LEVEL 20.405(a)(1)(li) ___ 50.36(c)(2) 50.73(a)(2)(vil) _ Other ($pecify 4 e! o! o (10) __ 20.40$(a)(1)(iii) _]L 50.73(a)(2)(1) 50.73(a)(2)(viii)(A) in Abstract !
_ 20.40$(a)(1)(iv) .__ 50.73(a)(2)(ii) _ 50.73(a)(2)(viii)(B) below and in
, _ 20.405(a)(1)(v) ._._ 50.73(s)(2)(lii) _ 50.73(a)(2)(x) Text) ,
LICENSEE CONTACT FOR TH15 LER (12)
Name T ELLEHQHL_Bl!RER AREA CODE E. anthe. Health Physics Ext. 2135 8l1Is el El Bl l 2181 el COnetETE ONE LINT FOR EACH COMPONEN FAILURE DLiC11 RED IN TH11 REPORT (13)
CAU$E SYSTEM COMPONENT MANUFAC- REPORTABLE CAUSE $Y$1EM COMPONENT MANUFAC. REPORTABLE TURER TO NPRDS- TURER 70 NPRDS I i i 1 1 I I N I l l I I I I ,
1 I I I I I I I I I I I I i SUPPLEMENTAL REPORT EXPECTED (14) Expected Month.]_ day _LYtar .
Subelssion lYes (if ves. comoltle EXPECTED _.$Upfil}$10N DATE)
X l NO l l l ABSTRACT (Limit to 1400 spaces, i.e. approximately fif teen single-space typewritten lines) (16) i At 0835 on October 20, 1989, the sample canisters for Unit i Auxiliary Building Vent Stack Radiation Monitor IPR 028J. were removed and were required to be analyzed within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />. While entering date on the Counting Room Sample Log, the Cheelstry Technician (CT) made an erroneous entry in the space for the Isotopic Analysis (Ir the Particulate Sample Cartridge. Later that day, a Health Physics Supervisor (HPS) reviewed the results. At 0635 on October 22, 1989, the Sample Analysis Time Limit was exceeded. On November 2 a dif f rent HPS, who processes the 00CM calculations, requested a printout of the analysis. It was discovered that the analysis had not been performed. An analysis was then performed, no activity was indicated. The root cause of this event was that the existing sampilhg program did not verify the Technical Specification sampling requirements and their associated time limits. A contributory cause was a failure of the CT to
.perfsrm the analysis as a result of the erroneous log entry. The Radiation Protection and Chemistry Department procedures and training programs will be revised as necessary to address this event. There have be:n previous occurrences of missed sampling requirements due to progransnatic deficiencies. The previous c:rr:ctive actions addressed root and contributing causes and are not applicable.
2939m(120289)/2
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g y L1fr W F EVENT ktP0tf (Ltti TEXT CONTittafloN rem Rev 2.9 f5 FACittfY IIME (1) 00CILCT DANGER (2) Ltt eksett (6) J ane (3)
Year /// Sequential /// Revision fff fff
/// MWr /// MWr c
arm e " unit i eIsieIeie141 sis ale . eIiIs - eIe el 2 or el s TEXT .' . Energy Industry Ider.lification System (E!!$) codes are identified in the text as (KK) b .
P C. PLANT CONDITIONS PRIOR TO EVENT:
-Unit: Draidwood I; Event Date: October 22, 1989;' Event time: 0836; Mode: N . Defueledi- Rx Power: 0%;
-.RCS (AB) Te'mparature/ Pressure: Ambient /Ateesphe're
- 9.- DESCRIPfl0N OF EVEN1;
.There were no systems or components inoperable at the beginning of the event which contributed to the severity of the event.
During the day shif t on October 20, 1989, the sample canisters for Unit 1 Aux 111ery Building Vent Stack Radiation Moalter (PR) (IL).1PR028J. were removed from the monitor by a Radiation Protection Technician (RPT).
(Non-Licensed Health Physics personnel). There were three sample canisters. One for tritium, one for lodine and one for Particulate. The Particulate cartridge required an Isotopic Analysis and a 6 hour6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> gross Alpha count.
- Braidwood Technical Specification Table 4.11-2 specifies that the sample canisters be changed at least once per 7 days and analysis perfomed within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> of sample canister removal. The sample canisters were labeled by the RPT. The label specified the types of analysis to be performed, when the sample canister had been removed, and where it had been removed from. . _ . .
L f At 0835 the RPT took the sample canisters to the Chemistry Lab for sample analysis. The samples were entered into
.the ' Counting Room $ ample Log", SWAP 550-22TI. The log was a tracking device for items that were brought to the f[
i' Chemistry tab for sample analysis. The log provided for identification and completion signof f for the activities associated with an item.
Lat:r that' day, a Chemistry Technician (CT) (Non-Licensed Chemistry Personnel) was performing the analysis of the
!- , samples on the counting room sample log. During the entering of data on the Counting Room Sample Log the CT inadvertently entered the $pectrum Flie # for the Isotopic Analysis perfomed on the lodine Sample cartridge in the space for the Isotopic Analysis for the Particulate Sample Cartridge. The CT lined out the entry and er.tered the data for a 6 Hour Gross Alpha Analysis above the line out. The CT entered the lodine $ ample data in the ;
csrr:ct. space. ~The CT then continued with other activities without performing the specified Isotoolc Analysis on the Particulate Sample Cartridge.
l
~ Later that day, a Health Physics Supervisor (HPS) (Non-Licensed Supervisor) reviewed the results of the various samples that had been collected by RP and analyzed by Chemistry. The HP$ signed for receiving the sample results cf the analysis that had been completed. The HPS did not observe that the Particulate Isotopic Analysis had not been performed. The HPS forwarded the analysis sheets to a dif ferent HP$ who is designated as the responsible L person.for tracking sample analysis results as inputs into the ODCH calculations.
At 0835, on October 22, 1989, the Sample Analysis Time Limit was exceeded.
.On the' evening of November 1, 1989, the second HPS was assembling data for ODCM calculations. He noted that he did not have a copy of the printout for the sample results for the partievlate isotopic analysis of the 1PR028J sample. canisters.
1 2939m(120289)/3
3 J LICENstt EVENT REPotf fttti TEXT CONTitanTION Form Rev 2.e FACILITY IIME (1) DOCKET lO SER (2) . . LER NLDRER (6) _
Pane 01
- ..
Year // Sequential //j/ Revision l //j/j f
/ Number ff
/// Number =
ara h ad unit i eIsIeieIo141 sis a1e - ei1Is - eie el 3 or el s p.
TEXT Energy Industry Identifitation System (E!!$) codes are identified in the text as (XX)
- 9. DESCRIPTI M 0F EVENT. CONilNVED:
On November 2, 1989, the second HP$ requested a printout of the particulate isotopic analysis from the Chemistry Supervisor. The Chemistry $upervisor discovered that the sample had not been analyzed. The
- particulate sample was analyzed to determine if any particulate could be quantified. The results indicated that no particulates could be quantified.
Based on the initial information associated with this event, a 'Braidwood Station Error Evaluation
Presentation" was held to review this event with the personnel directly involved and their supervisors. The l- c:rrective actions addressing both root and contributing causes are detailed below.
i This event is being reported pursuant to 10CFR50.73(a)(2)(1) - any operation or condition prohibited by the Pl ants Technical $pecifications.
l C. CAU$t 0F EVENT:
The root cause of this event was a prograsunatic deficiency. The existing Sampling Analysis program did st provide positive verification of Technical Specification sampilng requirements and their associated time
'r:quirements.
A contributory cause was a f ailure of the Chemistry Technician to perform the isotopic analysis on the Particulate Sample Cartridge.
1 D.- $AFETY ANALYSI$:
This event had no affect on the safety of the plant or the public. Radiation monitor IPR 028J. and the
'Aualliery Building Wide Range Gas Monitor were operable throughout the event, f Under worst case accident conditions these monitors would have been available to monitor Auxiliary Butiding v:ntilation Stack Effluent Activity. ;
E. CORRECTIVE ACTIONS:
I l- The Particulate $ ample Cartridge was lasnediately analysed. The results indicated that no particulates could be quantified.
Based on the initial information associated with this event, the personnel directly involved with this event participated in a "Braidwood Station Error Evaluation Presentation" to identify the root and contributing causes of this event. Based on the conclusions of this presentation the following corrective actions will be taken:
Prccedure BwRP 1280-919. Vent Stack Particulate filter Iodine Cartridge Sample Data $heet, will be revised to
. include a signature slot for the RPT collecting the samples. This will ensure that all information required for perforcing ODCH calculations is documented at the time the samples are collected. This will be tracked to completion by action item no. 456-200-89-18301.
2939m(120489)/4
_. _ _ a
~, y L1rrentf EVENT REPORT f Ltti TERI CONT! Milk. f em ter 2.s
' FACILITY M48E (1) DOCKET NLDSER (2) LER NLDRER (6) pane (3) ,,,,_
Year /// Sequential /// Revision ff fff
/// haker tit' ___naktt-araidmand unu 1 e 1 5 i e I e 1 e 1 41 51 6 a1e - e I 1J 5 - eie el 4 or el s ,
TEXT Energy Industry Identification System (Ell $) codes are identified in the text as [KK) i l
E.1 CORRECTIVE ACTIONS CONTINVED:
L A checklist will be developed to control processing of Technical $pecification samples from initial sampling i through co11ection of the results. The specific instructions in this checklist will include signature r:guirements for each step to ensure accountability of results. This will be tracked to completion by action item no. .456-200-89-18302.
'A tailgate session reviewing the details of this event will be held with each of the departments. This will. ;
be tracked to completion by action ites no. 456-200-89-18303.
A specifically labeled bin will be prepared for Technical $pecification samples and will be located in the :
Chemistry Counting Room. This will. ensure these sempies do not get aisplaced or assigned a lower priority.
This will be tracked to completion by action item no. 456-200-89-180304.
i Training. on the new program requirements, will be provided to both the Radiation Protection Department and the Cheelstry Department. This will be tracked to completion by action itse no. 456-200-89-18305. l The' training programs for the Radiation protection Technician and Chemistry Technician requalification and ,
continuous training will be evaluated. Revisions will be made as necessary. This will be tracked to i completion by action item no. 456-200 89-18306.
A fgroal Duty HP training program will be developed. This will be tracked to completion by action item no. I 456-200-89-18307. l F. PREVIOU$ OCCURRENCES:
Thero have been previous occurrences of missed choeistry sampling requirements due to programmatic deficiencies.
The previous steller occurrences are as follows: i DVR / LER TITLE DVR 20-1 87-273/ Missed Reactor Coolant $pecific Activity LER 87-043 Sample Due to Hisconnunications
'The root cause of this event was a misconnunication between a licensed operator and a non-licensed chemist.
DVR 20-1-87-316/ Exceeded Analysis Frequency on Waste LER 87-049 Gas Oxygen Analysis This event.was a-result of a programmatic deficiency. The method for tracking and completing samples was verbal and the method f or assigning and trac 61ng completion of samples was not formalized.
2939m(120489)/5-
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b-6, ' 'r; - 1
- Llerutrr tyralt atput (tra) itXT enuttaggT10hl Fern key L A FAClttfV 0140E (1) 00CKti spett (2) Ltt tasett (6) Pane (3) I Year /// Sequential /// Revisten f fff fff
/// "" r /// Numeer I
- c. l h .Arataand unit 1 0IsIeieIe141 sis aIe - ei1Is - eIe el s or el s j TEKf Energy Industry !dentificatten $ystem (E!!$) codes are identified in the text as (KK) i 4
=
(F.-PRtV100$DCCURRENCC$[ CONTINUED:
i h .. DWR 20-1-48-145/ .Lest CesposIte $amples Due io- )
LCR 88-013 programmatic Deficiency ;
.There were no spectfic provisions for disposition of the composite samples which caused the samples to be j staplaced and/or discarded after they had been analyzed.
DVR 20-1-86-171/ Missed Technical.$pectfication Composite ,
Ltt 06-017 Samples Due to failure to Implement Required Changes j
- . i i
l- < this event was the result of f ailure of Chemistry personnel to interpret the Technical Specification matrix
(- changes regarding chemistry composite samp1tng requirements. i
.i i
The corrective actions were. implemented addressing both root' and contributing causes. previous corrective ;
I actions are not applicable'to this event.
i --' 4.' CONPONENT IAlLURE DATA:
1:
L This event was not the result of component failure, nor did any components fall as a result of this event. ,
t l 5
1 l i l
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- 2939m(120289)/6- ,
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