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Category:DRAFT COMMISSION PAPER
MONTHYEARML20127B2011984-01-20020 January 1984
Draft Commission Paper Re Processing of Allegations Involving Applications for Ols.Nrr & IE Designated Full Time Allegation Coordinators.Procedures for Resolution of Allegations Encl
ML20136B2851981-12-10010 December 1981
Draft Commission Paper Recommending Approval of Transmittal of Encl 10CFR50.54(f) Ltr to Util Re Error in Seismic Design of Equipment & Piping in Containment Annulus.Related Documentation Encl
ML20151H1241981-11-19019 November 1981
Draft Commission Paper Re Transmittal of Encl Ltr to PG&E Re Required Design Verification Programs
ML20151H1321981-11-17017 November 1981
Draft Commission Paper Re Transmittal of Encl Draft Ltr on Seismic Design,To PG&E
ML20151H1171981-11-13013 November 1981
Draft Commission Paper Re 10CFR50.54(f) Ltr to Be Sent to Util Re Seismic Design Errors
ML20151H1071981-11-0505 November 1981
Draft Commission Paper Re Obtaining Approval for Transmittal of Attached 10CFR50.44(f) Ltr to Util.Recommends Approval
1984-01-20
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Category:TEXT-SAFETY REPORT
MONTHYEARML20211A9981999-07-12012 July 1999
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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Fort: The Comissioners Fkui: William J. Dircks, Executive Director for Operations
SUBJECT:
DIASLO CANYON UkIT 1 SEISHIC DESIGN ISSUES PURPOSE: To obtain Commission approval for transmittal of the attached 10 CFR 50.54(f) lettar to the Pacific Gas & Electric Company DISCUSS 10ti: In SLCY-bl-636, the staff forwarded a draf t 50.54(f) letter to Pacific Gas & Electric Company (PGaE). The Cocnission was briefec on this matter on November 9,1931.
based upon discussions during that meeting, the draft 50.54(f) letter to P6&E was revised.
RECOMMENDATION: It is recomended that the Comnission approve the transmittal of the attached letter to PG4L.
GD2 William J. Din:ks William J. Dircks, Executive Director for Operations Enclosure cc: SECY
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