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Category:MONTHLY OPERATING ANALYSIS REPORT
MONTHYEARML18102B6911997-01-31031 January 1997 Monthly Operating Repts for Jan 1997 for Diablo Canyon Power Plant,Units 1 & 2.W/970218 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 ML20059G6811993-06-30030 June 1993 Revised MOR for June 1993 for Dcnpp Unit 1 ML20045D1731993-05-31031 May 1993 Monthly Operating Repts for May 1993 for Diablo Canyon,Units 1 & 2 ML16342A3671993-05-31031 May 1993 Revised MOR for May 1993 for Dcnpp Unit 1 ML20065R8731990-11-30030 November 1990 Monthly Operating Repts for Diablo Canyon Units 1 & 2 for Nov 1990 ML20195G3301988-04-30030 April 1988 Corrected Monthly Operating Repts for Apr 1988 for Diablo Canyon ML20236R8541987-10-31031 October 1987 Monthly Operating Repts for Oct 1987 ML20236N6611987-09-30030 September 1987 Monthly Operating Repts for Sept 1987 ML20234B4981987-08-31031 August 1987 Monthly Operating Repts for Aug 1987 ML20237J4591987-07-31031 July 1987 Monthly Operating Repts for Jul 1987 ML20235N9921987-06-30030 June 1987 Monthly Operating Repts for June 1987 ML20215F8331987-05-31031 May 1987 Monthly Operating Repts for May 1987 ML20214J0191987-04-30030 April 1987 Monthly Operating Repts for Apr 1987 ML20206J5941987-03-31031 March 1987 Monthly Operating Rept for Mar 1987 ML20207S4501987-02-28028 February 1987 Monthly Operating Repts for Feb 1987 ML20211C7871987-01-31031 January 1987 Monthly Operating Repts for Jan 1987 ML20212G7121986-12-31031 December 1986 Monthly Operating Repts for Dec 1986 ML20211P3021986-11-30030 November 1986 Monthly Operating Repts for Nov 1986 ML20212M1041986-10-31031 October 1986 Monthly Operating Repts for Oct 1986 ML20207F7541986-09-30030 September 1986 Monthly Operating Repts for Sept 1986 ML20212C6691986-08-31031 August 1986 Monthly Operating Repts for Aug 1986 ML20215D8211986-07-31031 July 1986 Monthly Operating Rept for Jul 1986 ML20214L6491986-06-30030 June 1986 Monthly Operating Repts for June 1986 ML20205D4361986-05-31031 May 1986 Monthly Operating Rept for May 1986 ML20207C7661986-04-30030 April 1986 Monthly Operating Repts for Apr 1986 ML20211H0161986-03-31031 March 1986 Monthly Operating Repts for Mar 1986 ML20197D0671986-02-28028 February 1986 Monthly Operating Repts for Feb 1986 ML20141H3321986-01-31031 January 1986 Monthly Operating Repts for Jan 1986 ML20154S5711985-12-31031 December 1985 Monthly Operating Repts for Dec 1985 ML20137V4291985-11-30030 November 1985 Monthly Operating Repts for Nov 1985 ML20141F9121985-10-31031 October 1985 Monthly Operating Repts for Oct 1985 ML20138C1801985-09-30030 September 1985 Monthly Operating Rept for Sept 1985 ML20138R8321985-08-31031 August 1985 Monthly Operating Repts for Aug 1985 ML20132G7291985-07-31031 July 1985 Monthly Operating Repts for Jul 1985 ML20135C3351985-06-30030 June 1985 Monthly Operating Repts for June 1985 ML20133H2481985-05-31031 May 1985 Monthly Operating Repts for May 1985 ML20129F2421985-04-30030 April 1985 Monthly Operating Repts for Apr 1985 ML20129H2061985-03-31031 March 1985 Monthly Operating Rept for Mar 1985 ML20115C7021985-02-28028 February 1985 Monthly Operating Rept for Feb 1985 ML20111C2651985-01-31031 January 1985 Monthly Operating Rept for Jan 1985 ML20106J6531984-12-31031 December 1984 Monthly Operating Rept for Dec 1984 ML20113F3281984-11-30030 November 1984 Monthly Operating Rept for Nov 1984 ML20100B8341984-11-29029 November 1984 Responds to 841126 Telcon Re Observation Training for D Barkley.Remaining 4 Wks of Required 12-wk Observation Time Should Be Waived.Related Correspondence ML20100L5471984-10-31031 October 1984 Monthly Operating Rept for Oct 1984 ML20093L4681984-09-30030 September 1984 Monthly Operating Rept for Sept 1984 ML20093G8671984-08-31031 August 1984 Monthly Operating Rept for Aug 1984 ML20097A4291984-07-31031 July 1984 Monthly Operating Rept for Jul 1984 1997-01-31
[Table view] 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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. . OPERATING DATA REPORT DOCKET NO. 50-275 DATE 10/01/85 COMPLETED BY Bob Kanick TELEPHONE (805)595-7351 OPERATING STATUS
- 1. Unit Name: Diablo Canyon Unit 1
- 2. Reporting Period: September 1985
- 3. Licensed Thernri Power (MWt): 3338
- 4. Nameplate Rating (Gross MWe): 1137 e
- 5. . Design Electrical Rating (Net MWe): 1086
- 6. Maximum Dependable Capacity (Gross MWe): 1125**
- 7. Maximum Dependable Capacity (Net MWe): 1073**
- 8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons:
N/A
- 9. Power Level To Which Restricted, If Any (Net MWe): N/A
- 10. Reasons For Restrictions, If Any: None This Month Yr-to-Date Cumulative
- 11. Hours In Reporting Period 720.0 3525.3 3525.3*
4
- 12. Number Of Hours Reactor Was Critical 720.0 3469.0 3469.0*
- 13. Reactor Reserve Shutduwn Hours 0.0 0.0 0.0
- 14. Hours Generator On-Line 720.0 3454.5 3454.5*
- 15. Unit Reserve Shutdown Hours 0.0 0.0 0.0
- 16. Gross Thennal Energy Generated (MWH) 2374552. 10948280 10948280
- 17. Gross Electrical Energy Generated (MWH) 789100 3656032 3656032
- 18. Net Electrical Energy Generated (MWH) 752734 3478272 3478272
'19. Unit Service Factor 100.0 98.0 98.0
- 20. Unit Availability Factor 100.0 98.0 98.0
- 21. Unit Capacity Factor (Using MDC Pet) 97.4 92.0 92.0
- 22. Unit Capacity Factor (Using DER Net) 96.3 90.9 90.9
- 23. Unit Forced Outage Rate 0.0 2.0 2.0
'24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):
- 25. If Shut Down At End Of Report Period, Est. Date of Start-up: N/A
- 26. Units In Test Status (Prior to Connercial Operation): N/A
, , , i
- 'As of comercial operation on 5-7-85 at 0243.
- These values are predictions - actual values are to be determined by operating experience during the first year of councrcial. operation.
8512120492 DR 850930 ADCCK 05000275 PDR DC0455 -136- /}
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. OPERATING DATA REPORT DOCKET N0. 50-323 DATE 10/01/85 COMPLETED BY Bob Kanick TELEPHONE (805)595-7351 OPERATING STATUS
- 1. Unit Name: Diablo Canyon Unit 2
- 2. Reporting Period: September 1985
- 3. Licensed Thermal Power (MWt): 3411
- 4. Nameplate Rating (Gross MWe): 1164
- 5. Design Electrical Rating (Net MWe): 1119
- 6. Maximum Dependable Capacity (Gross MWe): 1145***
- 7. Maximum Dependable Capacity (Net MWe): 1093***
- 8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons:
N/A
- 9. Power Level To Which Restricted, If Any (Net MWe): N/A
- 10. Reasons For Restrictions, If Any: None This Month Yr-to-Date Cumulative
- 11. Hours In Reporting Period 720.0 3672* 3672*
- 12. Number Of Hours Reactor Was Critical 0.0 206.3_ 206 7
- 13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0
- 14. Hours Generator On-Line 0.0 0.0 0.0*
- 15. Unit Reserve Shutdown Hours 0.0 0.0 0.0
- 16. Gross Thermal Energy Generated (MWH) 0.0 5047 5047*
- 17. Gross Electrical Energy Generated (MWH) 0.0 0 0*
- 18. Net Electrical Energy Generated (MWH) -4, C - 54,565 - 54,565*
- 19. Unit Service Factor N/A**
- 20. Unit Availability Factor N/A**
- 21. Unit Capacity Factor (Using MDC Wet) N/A**
- 22. Unit Capacity Factor (Using DER Net) N/A**
- 23. Unit Forced Outage Rate N/A**
- 24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):
N/A
- 25. If Shut Down At End Of Report Period, Est. Date of Start-up: October,1985
- 26. Units In Test Status (Prior to Commercial Operation):
Forecast Achieved INITIAL CRITICALITY July 1985 August 1985 INITIAL ELECTRICITY October 1985 COMMERCIAL OPERATION January 1986
- Cumulative totals started on the April 26, 1985 (Date of effectiveness of Low Power License).
- These sections not applicable until comencement of commercial operation.
- These values are predictions - actual values are to be determined by operating experience during the first year of comercial operation.
DC0455 -137-
. AVERAGE DAILY UNIT POWER LEVEL DOCKET N0. 50-275 UNIT Diablo Canyon Unit 1 DATE 10/01/85 COMPLETED BY Bob Kanick TELEPHONE (805)595-7351 MONTH September 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY FGER LEVEL (MWE-NET) (MdE-NET) 1 1041 17 1062 2 1066 18 1062 3 1066 19 1058 4 1061 20 1058 5 1053 21 1062 6 921 22 1045 7 810 23 1062 8 1061 24 1062 9 1058 25 1062 10 1057 26 1062 11 1062 27 1058 12 1058 28 1058 13 1061 29 1057 14 1062 30 1058 15 1041 16 1058 INSTRUCTI0fG On this format, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.
DC0455 -138-
. AVERAGE DAILY UNIT POWER LEVEL DOCKET N0. 50-323 UNIT Diablo Canyon Unit 2 DATE 10/01/85 COMPLETED BY Bob Kanick TELEPHONE (805)595-7351 MONTH September 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (tHE-NET) (ISE-NET) 1 -17 17 -5 2 -14 18 -5 3 -14 19 -5 4 -10 20 -5 5 -5 21 -3 6 -4 22 -3 7 -4 23 -5 8 -4 24 -5 9 -5 25 -5 10 -5 26 -5 11 -5 27 -5 12 -5 28 -5 13 -5 29 -4 14 -4 30 -5 15 -2 16 -5 INSTRUCTIONS On this format, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.
DC0455 -139-
l UNIT SHUTDOWNS AND POWER REDUCTIONS -
PAGE 1 0F 1 DOCKET NO. 50-275 UNIT NAME Diablo Canyon IJnit 1 .
DATE 10/03/85 COMPLETED BY D.P. SISK ,
REPORT MONTH SEPTEMBER 1985 TELEPHONE (805)595-7351 Licensee Cause & Corrective Duration System Component 2 Methodof Event Action to No. Date Type l (Hours) Reason Shutdown Report # Code Code Prevent Recurrence No shutdowns occurred during the month of September.
'r 1 2 3 4 F: Forced Reason: Method: Exhibit G - Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram. Entry Sheets for Licensee C-Refueling 3-Automatic Scram. Event Report (LER) File D-Regulatory Restriction 4-Continuation from (NUREG-1022)
E-Operator Training & License Examination previous month.
l F-Administrative 5-Power reduction 5 G-Operational Error (Explain) 6,7,8-N/A Exhibit I - Same Source H-Other(Explain) 9-Other l
DC0455 -140-l . . . . - . - . . .
UNIT SfUIDOWNS AND POWER REDUCTIONS PAGE 1 0F 1 DOCKET N0. 50-323 -
UNIT NAME Diablo Canyon Unit 2 DATE 10/03/85 COMPLETED BY D.P. SISK
- REPORT MONTH SEPTEMBER 1985 TELEPHONE (805)595-7351 Licensee System Compon nt Cause & Corrective Duration 2 Methodof Event Action to No. Date Type l (Hours) Reason Shutdown Report # Code Code Prevent Recurrence This report is not applicable until initial electrical production.
1 2 3 4 F: Forced Reason: Method: Exhibit G - Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram. Entry Sheets for Licensee C-Refueling 3-Automatic Scram. Event Report (LER) File D-Regulatory Restriction 4-Continuation from (NUREG-1022)
E-Operator Training & License Examination previous month.
F-Administrative 5-Power reduction 5 G-Operational Error (Explain) 6,7,8-N/A Exhibit I - Same Source H-Other (Explain) 9-0ther DC0455 -141-
l 9
PACIFIC GAS AND E LE C T RIC C O M PANY pgg . DIABLO CANYON POWER PLANT I PO. Box 56 Avila Beach. Cahfomia 93424 * (805) 595-7351 R.C. THORNBERRY PLANT MANA3ER October 7, 1985 Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, DC 20555 RE: Docket No. 50-275 and 50-323 License No. DPR-80 and DPR-82 Monthly Operating Report for September,1985 Gentlemen:
Enclosed are the completed monthly operating report forms for Diablo Canyon Units 1 and 2 for September,1985. This report is submitted in accordance with Section 6.9.1.7 of the Units 1 and 2 Technical Specifications.
Sincerely, f0f ROBERT C. THORNBERRY RCT:lah Enclosures cc Mr. John B. Martin, Regional Administrator Region V - USNRC
.j, DC0044 1 L
MONTHLY NARRATfVE REPORT 0F OPERATION
. AND MAJOR MAINTENANCE EXPERIENCE This report describes the operating and major maintenance experience for the month of September,1985. This narrative report was prepared by the plant staff and is submitted in accordance with Section 6.9.1.7 of the Units 1 and 2 Technical Specifications.
On September 6,1985 Unit I reduced power to 35% to repair a condenser tube leak.
On September 13, 1985 Unit 2 experienced a spurious containment ventilation isolation.
On September 19, 1985 An Unusual Event was declared due to a Tsunami Warning.
Unit 1 operated this month with a unit availability factor of 100% and a unit capacity factor 97.4%. Unit 2 was in cold shutdown for the entire month due to a motor failure on Reactor Coolant Pump 2-4 on August 31, 1985.
There were no major safety related maintenance activities performed for Unit I this month. For Unit 2, the stator for Reactor Coolant Pump 2-4 was rewound and vacuum pressure impregnated (VPI). In addition, to reduce the probability of a similar failure, the stators for for Reactor Coolant Pumps 2-1 and 2-2 were vacuum pressure impregnated. Reactor Coolant Pump 2-3 had previously been rewound and vacuum pressure impregnated after a failure while it was installed in Unit 1. All three motors have been reinstalled and will be operable early in October.
No challenges to the PORVs or Steam Generator Safety Valves have been made.
No changes have been made in the Environmental Radiological Monitoring procedure, the Offsite Dose Calculation procedure, or in any radioactive waste treatment system.
DC0455 -135-