ML20039G942
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| ML20039G942 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 01/11/1982 |
| From: | Baciarelli R PACIFIC GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| Shared Package | |
| ML20039G937 | List: |
| References | |
| CLI-81-30, LER-81-002-01X, LER-81-2-1X, NUDOCS 8201190326 | |
| Download: ML20039G942 (1) | |
Similar Documents at Diablo Canyon | |
|---|---|
Category:LICENSEE EVENT REPORT (SEE ALSO AO
MONTHYEARML18064A8631995-08-14014 August 1995
[Table view]LER 95-004-00:on 950714,determined That Redundant DG Circuits Not Separated Per App R Due to Insufficient App R Program Documentation.Hourly Fire Tour Established in EDG 1-1 Room & Review of LERs for App R Completed ML18100B2981994-05-24024 May 1994 LER 94-014-00:on 940426,SG 1-2 Automatically Started When Two Indicating Light Sockets Shorted Together Due to Personnel Error.Description of Event & Lessons Learned Will Be Published in Operations Incident Summary.W/940524 Ltr ML20024E4541983-08-0404 August 1983 LER 83-017/03L-0:on 830706,power Supply Circuit Breaker for Oily Water Separator Effluent Flow Monitor (FR-251) Tripped Open & Would Not Reset.Cause Undetermined.Breaker Replaced. W/830804 Ltr ML20052E1721982-04-29029 April 1982 LER 82-005/03L-0:on 820330,during Surveillance Testing,Steam Generator Blowdown Tank Liquid Radiation Monitor RM-23 Failed Quarterly Functional Test.Caused by Failure of Photo Multiplier Tube ML20052A3861982-04-22022 April 1982 LER 82-003/03X-1:on 820212,prior to Fuel Load,Vital Instrument Ac Panel Undervoltage Alarm Received in Control Room.Inverter IY-11 & Panel PY-15 Tripped When Manually Switched Off.Cause Unknown ML20052C2951982-04-15015 April 1982 LER 81-001/01X-1:on 810922,during Review of Reportability of Inoperable Plant Vent Rod Monitoring Channels,Discovered Required STS Action Statements Had Not Been Entered.Caused by Personnel Error.Personnel Retrained ML20042C4071982-03-24024 March 1982 LER 82-002/03L-0:on 820222,air Sample Pumps for Plant Vent Radiation Monitors (RM 14A & B) Found Tripped.Caused by Clogging of Rad Monitor Filter Paper W/Debris from Const Activities ML20042C3511982-03-24024 March 1982 LER 82-004/03L-0:on 820223 & 26,oily Water Separator Effluent Line Flow Rate Measurement Device (FR-251) Inoperable.Caused by Faulty Electronic Component on First Occasion & by Breakdown of Oscillator on Second ML20042A8701982-03-16016 March 1982 Updated LER 81-002/01X-6:on 810927,error Discovered in Diagram Used to Locate Vertical Seismic Floor Response Spectra for Equipment & Sys Seismic Design.Caused by Erroneous Use of Unit 2 Diagram for Unit 1 ML20042A7761982-03-15015 March 1982 LER 82-003/03L-0:on 820212,prior to Fuel Load,Operators Received Vital Instrument Ac Panel Under Voltage Alarm in Control Room.Caused by Tripped Feeder Breaker to PY-15. Event Under Investigation ML20041E3911982-03-0101 March 1982 LER 82-001/03L-0:on 820129,during Audit Prior to Fuel Load, Communication Phone Mounted on Front Section of Hot Shutdown Panel Was Discovered Excluded from Seismic Analysis.Caused by Coordination Failure.Panel Will Be Reanalyzed ML20040D8191982-01-25025 January 1982 Updated LER 81-002/01X-5:on 810927,prior to Fuel Loading, Engineer Discovered Error in Diagram Used to Locate Vertical Seismic Floor Response Spectra for Use in Plant Equipment & Sys Seismic Design.Unit 2 Diagram Used for Unit 1 Annulus ML20040B4721982-01-15015 January 1982 LER 81-010/03L-0:on 811217,prior to Fuel Load,Documentation for Gross Gamma Analysis of Weekly Composite Sample for Oily Water Separator Discovered Missing for 811029-1119.Sheets Apparently Misplaced.Procedure Revised ML20040A5191982-01-14014 January 1982 Updated LER 81-005/01X-1:on 811015,during Insp,Battery Cell Case Found Weeping.Further Insp Revealed 17 Cells W/Cracks Near Molded Support Ribs on Bottom of Cases.Caused by Inadequate Support of Cells.Racks Modified & Cells Replaced ML20040A0721982-01-11011 January 1982 LER 81-009/03L-0:on 811211,operator Failed to Perform Daily Channel Check on Iodine Sampler Flow Rate Monitor.Caused by Inadequate Instructions for Verifying Annunciator Window Operability.Procedure Change Issued ML20039G9421982-01-11011 January 1982 Updated LER 81-002/01X-4:on 810927,error Found in Diagram Used to Locate Vertical Seismic Floor Response (Vsfr) Spectra.Caused by Use of Unit 2 Diagram for Unit 1 Annulus Area ML20039D3601981-12-18018 December 1981 Updated LER 81-002/01X-3:on 810927,discovered Error in Diagram Used to Locate Vertical Seismic Floor Response Spectra Inplant Equipment & Sys Seismic Design.Caused by Using Incorrect Diagram.Sys Being Reviewed & Modified ML20039C5861981-12-17017 December 1981 LER 81-007/03L-0:on 811125,discovered That Tech Specs Surveillance Requirement 4.11.2.4.1 Re Project Doses Due to Gaseous Releases from Plant Not Performed within Required Time Interval.Caused by Personnel Oversight ML20039C5791981-12-17017 December 1981 LER 81-008/03L-0:on 811130,discovered That Gross Alpha Activity Analysis Had Not Been Performed within Required Time Interval.Caused by Personnel Oversight.Sample Counted on 811130 ML20038B9381981-12-0202 December 1981 LER 81-006/03L-0:on 811103,daily Channel Check on Plant Vent Flow Recorder Not Performed.Caused by Operator & Reviewer Failure to Note Step on Checklist.Operators Instructed & Procedure Simplified 1995-08-14 Category:RO) MONTHYEARML18064A8631995-08-14014 August 1995
[Table view]LER 95-004-00:on 950714,determined That Redundant DG Circuits Not Separated Per App R Due to Insufficient App R Program Documentation.Hourly Fire Tour Established in EDG 1-1 Room & Review of LERs for App R Completed ML18100B2981994-05-24024 May 1994 LER 94-014-00:on 940426,SG 1-2 Automatically Started When Two Indicating Light Sockets Shorted Together Due to Personnel Error.Description of Event & Lessons Learned Will Be Published in Operations Incident Summary.W/940524 Ltr ML20024E4541983-08-0404 August 1983 LER 83-017/03L-0:on 830706,power Supply Circuit Breaker for Oily Water Separator Effluent Flow Monitor (FR-251) Tripped Open & Would Not Reset.Cause Undetermined.Breaker Replaced. W/830804 Ltr ML20052E1721982-04-29029 April 1982 LER 82-005/03L-0:on 820330,during Surveillance Testing,Steam Generator Blowdown Tank Liquid Radiation Monitor RM-23 Failed Quarterly Functional Test.Caused by Failure of Photo Multiplier Tube ML20052A3861982-04-22022 April 1982 LER 82-003/03X-1:on 820212,prior to Fuel Load,Vital Instrument Ac Panel Undervoltage Alarm Received in Control Room.Inverter IY-11 & Panel PY-15 Tripped When Manually Switched Off.Cause Unknown ML20052C2951982-04-15015 April 1982 LER 81-001/01X-1:on 810922,during Review of Reportability of Inoperable Plant Vent Rod Monitoring Channels,Discovered Required STS Action Statements Had Not Been Entered.Caused by Personnel Error.Personnel Retrained ML20042C4071982-03-24024 March 1982 LER 82-002/03L-0:on 820222,air Sample Pumps for Plant Vent Radiation Monitors (RM 14A & B) Found Tripped.Caused by Clogging of Rad Monitor Filter Paper W/Debris from Const Activities ML20042C3511982-03-24024 March 1982 LER 82-004/03L-0:on 820223 & 26,oily Water Separator Effluent Line Flow Rate Measurement Device (FR-251) Inoperable.Caused by Faulty Electronic Component on First Occasion & by Breakdown of Oscillator on Second ML20042A8701982-03-16016 March 1982 Updated LER 81-002/01X-6:on 810927,error Discovered in Diagram Used to Locate Vertical Seismic Floor Response Spectra for Equipment & Sys Seismic Design.Caused by Erroneous Use of Unit 2 Diagram for Unit 1 ML20042A7761982-03-15015 March 1982 LER 82-003/03L-0:on 820212,prior to Fuel Load,Operators Received Vital Instrument Ac Panel Under Voltage Alarm in Control Room.Caused by Tripped Feeder Breaker to PY-15. Event Under Investigation ML20041E3911982-03-0101 March 1982 LER 82-001/03L-0:on 820129,during Audit Prior to Fuel Load, Communication Phone Mounted on Front Section of Hot Shutdown Panel Was Discovered Excluded from Seismic Analysis.Caused by Coordination Failure.Panel Will Be Reanalyzed ML20040D8191982-01-25025 January 1982 Updated LER 81-002/01X-5:on 810927,prior to Fuel Loading, Engineer Discovered Error in Diagram Used to Locate Vertical Seismic Floor Response Spectra for Use in Plant Equipment & Sys Seismic Design.Unit 2 Diagram Used for Unit 1 Annulus ML20040B4721982-01-15015 January 1982 LER 81-010/03L-0:on 811217,prior to Fuel Load,Documentation for Gross Gamma Analysis of Weekly Composite Sample for Oily Water Separator Discovered Missing for 811029-1119.Sheets Apparently Misplaced.Procedure Revised ML20040A5191982-01-14014 January 1982 Updated LER 81-005/01X-1:on 811015,during Insp,Battery Cell Case Found Weeping.Further Insp Revealed 17 Cells W/Cracks Near Molded Support Ribs on Bottom of Cases.Caused by Inadequate Support of Cells.Racks Modified & Cells Replaced ML20040A0721982-01-11011 January 1982 LER 81-009/03L-0:on 811211,operator Failed to Perform Daily Channel Check on Iodine Sampler Flow Rate Monitor.Caused by Inadequate Instructions for Verifying Annunciator Window Operability.Procedure Change Issued ML20039G9421982-01-11011 January 1982 Updated LER 81-002/01X-4:on 810927,error Found in Diagram Used to Locate Vertical Seismic Floor Response (Vsfr) Spectra.Caused by Use of Unit 2 Diagram for Unit 1 Annulus Area ML20039D3601981-12-18018 December 1981 Updated LER 81-002/01X-3:on 810927,discovered Error in Diagram Used to Locate Vertical Seismic Floor Response Spectra Inplant Equipment & Sys Seismic Design.Caused by Using Incorrect Diagram.Sys Being Reviewed & Modified ML20039C5861981-12-17017 December 1981 LER 81-007/03L-0:on 811125,discovered That Tech Specs Surveillance Requirement 4.11.2.4.1 Re Project Doses Due to Gaseous Releases from Plant Not Performed within Required Time Interval.Caused by Personnel Oversight ML20039C5791981-12-17017 December 1981 LER 81-008/03L-0:on 811130,discovered That Gross Alpha Activity Analysis Had Not Been Performed within Required Time Interval.Caused by Personnel Oversight.Sample Counted on 811130 ML20038B9381981-12-0202 December 1981 LER 81-006/03L-0:on 811103,daily Channel Check on Plant Vent Flow Recorder Not Performed.Caused by Operator & Reviewer Failure to Note Step on Checklist.Operators Instructed & Procedure Simplified 1995-08-14 Category:TEXT-SAFETY REPORT MONTHYEARML20211A9981999-07-12012 July 1999
[Table view]Draft,Probabilistic Safety Assessment, Risk Info Matrix, Risk Ranking of Systems by Importance Measure DCL-99-045, 1998 Annual Financial Rept for PG&E Corp. with1998-12-31031 December 1998 1998 Annual Financial Rept for PG&E Corp. with ML20217G5151997-12-31031 December 1997 1997 PG&E Corp Annual Rept ML20205F5881997-07-24024 July 1997 Decommissioning Cost Estimate for Diablo Canyon Power Plant,Units 1 & 2 ML17264A9381997-07-10010 July 1997 Deficiency Rept Re Potential Safety Hazard Associated w/FM-Alco 251 Engin,High Pressure Fuel tube-catalog: 4401031-2 in Which Dual Failure Mode Exists.Caused by Incorrect Forming Process ML18102B6911997-01-31031 January 1997 Monthly Operating Repts for Jan 1997 for Diablo Canyon Power Plant,Units 1 & 2.W/970218 Ltr ML16342D5351997-01-31031 January 1997 WCAP-14826, Instrumentation Calibr & Drift Evaluation Process for Diablo Canyon Units 1 & 2,24 Month Fuel Cycle Evaluation. ML16343A4741997-01-31031 January 1997 WCAP-11595,Rev 2, W Improved Thermal Design Procedure Instrument Uncertainty Methodology Diablo Canyon Units 1 & 2 24 Month Fuel Cycle Evaluation. ML17083C6231997-01-31031 January 1997 Rev 4 to WCAP-13705, W Setpoint Methodology for Protection Sys Diablo Canyon Units 1 & 2,24 Month Fuel Cycle Evaluation. DCL-97-045, Pacific Gas & Electric Co 1996 Annual Rept1996-12-31031 December 1996 Pacific Gas & Electric Co 1996 Annual Rept ML16342D5541996-12-31031 December 1996 Non-proprietary Nrc/Util Meeting on Model 51 SG Tube Integrity & ARC Methodology. ML20129J4311996-10-18018 October 1996 Safety Evaluation Approving Corporate Restructuring & Establishment of Holding Company Under Temporary Name PG&E Parent Co.,Inc of Which PG&E Would Become Wholly Owned Subsidiary DCL-96-155, Revised Special Rept SR 95-05:on 950806,EDG 1-2 to Achieve Rated Output Frequency within TS Limits.Caused by Degraded Electronic Governor Performance.Replaced Electronic Governor Motor Operated Potentiometer & Electronic Governor1996-07-22022 July 1996 Revised Special Rept SR 95-05:on 950806,EDG 1-2 to Achieve Rated Output Frequency within TS Limits.Caused by Degraded Electronic Governor Performance.Replaced Electronic Governor Motor Operated Potentiometer & Electronic Governor ML20116B8491996-07-22022 July 1996 Revised Special Rept SR 95-03:on 950621,EDG 1-2 Failed to Load During Surveillance Testing.Caused by Loose Fuse Holder Contact Clip.Retensioned Loose Fuse Holder Contact Clip & Tightened Loose Wire Connection ML20116B8521996-07-22022 July 1996 Revised Special Rept SR 95-04:on 950718,EDG 1-2 Load Swings Occurred.Caused by Defective Electronic Governor Stability Potentiometer.Replaced Electronic Governor ML20236Q2611996-04-15015 April 1996 Rev 0 to DCP M-050284, Design Change Package for Installation of CCW Surge Tank Pressurization Sys for Unit 1 ML20094M6251995-11-21021 November 1995 Final Part 21 Rept of Investigation & Analysis of Suspect Fasteners Event 29257.B&G-Cardinal Discontinued Using Heat Treatment Equipment at Cardinal Facility Until Such Time That Satisfactory Mods Made to Hardware & Procedures ML18064A8631995-08-14014 August 1995 LER 95-004-00:on 950714,determined That Redundant DG Circuits Not Separated Per App R Due to Insufficient App R Program Documentation.Hourly Fire Tour Established in EDG 1-1 Room & Review of LERs for App R Completed ML18100B2981994-05-24024 May 1994 LER 94-014-00:on 940426,SG 1-2 Automatically Started When Two Indicating Light Sockets Shorted Together Due to Personnel Error.Description of Event & Lessons Learned Will Be Published in Operations Incident Summary.W/940524 Ltr ML16342C3091993-12-31031 December 1993 Monthly Operating Repts for Dec 1993 for Dcnpp Units 1 & 2 ML16342A3691993-08-31031 August 1993 Revised MOR for Aug 1993 for Dcnpp Unit 1 ML16342A3681993-07-31031 July 1993 Revised MOR for July 1993 for Dcnpp Unit 1 ML20046A6611993-07-21021 July 1993 Cycle 6 Startup Rept. ML20059G6811993-06-30030 June 1993 Revised MOR for June 1993 for Dcnpp Unit 1 ML16342A3671993-05-31031 May 1993 Revised MOR for May 1993 for Dcnpp Unit 1 ML20045D1731993-05-31031 May 1993 Monthly Operating Repts for May 1993 for Diablo Canyon,Units 1 & 2 ML20126J5961992-12-31031 December 1992 Part 21 Rept Re Potential Loss of RHR Cooling During Nozzle Dam Removal.Nozzle Dams May Create Trapped Air Column Behind Cold Leg Nozzle Dam.Mod to Nozzle Dams Currently Underway. Ltrs to Affected Utils Encl ML20141M0471991-12-31031 December 1991 Pge Annual Rept - 1991 ML20086T1001991-12-31031 December 1991 Adequacy of Seismic Margins Assuming Increase in Amplitude of Diablo Canyon Seismic Long-Term Program Horizontal & Vertical Ground Motions Described in Sser 34 ML16341G4871991-11-30030 November 1991 Nonproprietary Technical Justification for Eliminating Large Primary Loop Pipe Rupture as Structural Design Basis for Diablo Canyon Units 1 & 2 Nuclear Power Plants. ML20085D2951991-08-21021 August 1991 Field Exercise Scenario,Aug 1991 ML20070S7311990-12-31031 December 1990 Analysis of Capsule X from Diablo Canyon Unit 2 Reactor Vessel Radiation Surveillance Program ML20065R8731990-11-30030 November 1990 Monthly Operating Repts for Diablo Canyon Units 1 & 2 for Nov 1990 ML20058P5181990-05-11011 May 1990 Accident Sequence Precursor Program Event Analysis 323/87-005 R2, Loss of RHR Cooling Results in Reactor Vessel Bulk Boiling ML20058P5131990-04-0505 April 1990 Accident Sequence Precursor Program Event Analysis 424/PNO-IIT-90-02A, Loop,Diesel Generator Failure & 36 Min Interruption of SDC During Mid-Loop Operation ML20058P5221990-02-0303 February 1990 Accident Sequence Precursor Program Event Analysis Loss of Reactor Protection Sys Bus B Causes Loss of Shutdown Cooling ML20006E5441989-11-30030 November 1989 Review of Flow Peaking & Tube Fatique in Diablo Canyon Units 1 & 2 Steam Generators. ML20006C6681989-11-30030 November 1989 Nonproprietary WCAP-12416, Evaluation of Thermal Stratification for Diablo Canyon Units 1 & 2 Pressurizer Surge Line. ML20246E4891989-06-30030 June 1989 Quarterly Sys Status Rept,2nd Quarter 1989,Sys 65 120V Instrument AC Sys,Sys 66 120V Security UPS Sys & Sys 67 125/250VDC Sys ML20245G9881989-06-16016 June 1989 Has Been Canceled.Resolution of LERs Missing from Lertrk/Scss/Dcs Discussed DCL-89-117, Special Rept:On 890406,main Steam Line Radiation Monitor 1RM-71 Alarmed & Declared Inoperable.Caused by Failure of Detector Tube.Tube Replaced.Monitor Returned to Svc on 8904181989-04-27027 April 1989 Special Rept:On 890406,main Steam Line Radiation Monitor 1RM-71 Alarmed & Declared Inoperable.Caused by Failure of Detector Tube.Tube Replaced.Monitor Returned to Svc on 890418 ML20247M6281989-03-31031 March 1989 Nonproprietary Advanced Digital Feedwater Control Sys Median Signal Selector for Diablo Canyon Units 1 & 2 ML20246P4461989-03-23023 March 1989 Corrected Diablo Canyon Power Plant Unit 2 Second Refueling Outage Inservice Insp (ISI) Rept ML20236E0581988-12-31031 December 1988 Pacific Gas & Electric Co Annual Rept 1988 ML20247H0761988-11-30030 November 1988 Vol 1 to Bit Elimination Study for Diablo Canyon Units 1 & 2 ML20205S9071988-10-31031 October 1988 Steam Generator U-Bend Tube Fatigue Evaluation ML20153E5331988-08-29029 August 1988 Safety Evaluation Supporting Amends 31 & 30 to Licenses DPR-80 & DPR-82,respectively ML20206E7181988-05-30030 May 1988 Analysis of Capsule U from PG&E Diablo Canyon Unit 2 Reactor Vessel Radiation Surveillance Program ML20195G3301988-04-30030 April 1988 Corrected Monthly Operating Repts for Apr 1988 for Diablo Canyon ML20153B0411988-03-31031 March 1988 Comments on ACRS Subcommittee on Diablo Canyon Meeting on 880223-24 in Burlingham,Ca Re Status of Long Term Seismic Program of Plant 1999-07-12 |
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