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Category:MONTHLY OPERATING ANALYSIS REPORT
MONTHYEARBVY-99-127, Monthly Operating Rept for Sept 1999 for Vermont Yankee Nuclear Power Station.With1999-09-30030 September 1999 Monthly Operating Rept for Sept 1999 for Vermont Yankee Nuclear Power Station.With BVY-99-112, Monthly Operating Rept for Aug 1999 for Vermont Yankee.With1999-08-31031 August 1999 Monthly Operating Rept for Aug 1999 for Vermont Yankee.With BVY-99-102, Monthly Operating Rept for July 1999 for Vermont Yankee. with1999-07-31031 July 1999 Monthly Operating Rept for July 1999 for Vermont Yankee. with BVY-99-090, Monthly Operating Rept for June 1999 for Vermont Yankee Nuclear Power Station.With1999-06-30030 June 1999 Monthly Operating Rept for June 1999 for Vermont Yankee Nuclear Power Station.With BVY-99-077, Monthly Operating Rept for May 1999 for Vermont Yankee Nuclear Power Station.With1999-05-31031 May 1999 Monthly Operating Rept for May 1999 for Vermont Yankee Nuclear Power Station.With BVY-99-068, Monthly Operating Rept for Apr 1999 for Vynp.With1999-04-30030 April 1999 Monthly Operating Rept for Apr 1999 for Vynp.With BVY-99-046, Monthly Operating Rept for Mar 1999 for Vermont Yankee Nuclear Power Station.With1999-03-31031 March 1999 Monthly Operating Rept for Mar 1999 for Vermont Yankee Nuclear Power Station.With BVY-99-035, Monthly Operating Rept for Feb 1999 for Vermont Yankee Nuclear Station.With1999-02-28028 February 1999 Monthly Operating Rept for Feb 1999 for Vermont Yankee Nuclear Station.With BVY-99-001, Monthly Operating Rept for Dec 1998 for Vermont Yankee Nuclear Power Station1998-12-31031 December 1998 Monthly Operating Rept for Dec 1998 for Vermont Yankee Nuclear Power Station BVY-98-163, Monthly Operating Rept for Nov 1998 for Vermont Yankee Nuclear Power Station.With1998-11-30030 November 1998 Monthly Operating Rept for Nov 1998 for Vermont Yankee Nuclear Power Station.With BVY-98-154, Monthly Operating Rept for Oct 1998 for Vermont Yankee Nuclear Power Station.With1998-10-31031 October 1998 Monthly Operating Rept for Oct 1998 for Vermont Yankee Nuclear Power Station.With BVY-98-149, Monthly Operating Rept for Sept 1998 for Vermont Yankee Nuclear Power Station.With1998-09-30030 September 1998 Monthly Operating Rept for Sept 1998 for Vermont Yankee Nuclear Power Station.With BVY-98-135, Monthly Operating Rept for Aug 1998 for Vermont Yankee Nuclear Power Station.With1998-08-31031 August 1998 Monthly Operating Rept for Aug 1998 for Vermont Yankee Nuclear Power Station.With BVY-98-122, Monthly Operating Rept for July 1998 for Vermont Yankee Nuclear Power Station1998-07-31031 July 1998 Monthly Operating Rept for July 1998 for Vermont Yankee Nuclear Power Station BVY-98-098, Monthly Operating Rept for June 1998 for Vermont Yankee Nuclear Power Station1998-06-30030 June 1998 Monthly Operating Rept for June 1998 for Vermont Yankee Nuclear Power Station BVY-98-081, Monthly Operating Rept for May 1998 for Vermont Yankee Nuclear Power Station1998-05-31031 May 1998 Monthly Operating Rept for May 1998 for Vermont Yankee Nuclear Power Station BVY-98-068, Monthly Operating Rept for Apr 1998 for Vermont Yankee Nuclear Power Station1998-04-30030 April 1998 Monthly Operating Rept for Apr 1998 for Vermont Yankee Nuclear Power Station BVY-98-053, Monthly Statistical Rept for Mar 1998 for Vynp1998-03-31031 March 1998 Monthly Statistical Rept for Mar 1998 for Vynp ML20248L1581998-02-28028 February 1998 Monthly Operating Rept for Feb 1998 for Vermont Yankee Nuclear Power Station ML20217M7801998-01-31031 January 1998 Monthly Operating Rept for Jan 1998 for Vynp Station ML20198L6111997-12-31031 December 1997 Monthly Operating Rept for Dec 1997 for Vynp Station BVY-97-161, Monthly Operating Rept for Nov 1997 for Vermont Yankee Nuclear Power Station1997-11-30030 November 1997 Monthly Operating Rept for Nov 1997 for Vermont Yankee Nuclear Power Station BVY-97-145, Monthly Operating Rept for Oct 1997 for Vermont Yankee Nuclear Power Station1997-10-31031 October 1997 Monthly Operating Rept for Oct 1997 for Vermont Yankee Nuclear Power Station BVY-97-126, Monthly Operating Rept for Sept 1997 for Vermont Yankee Nuclear Power Station1997-09-30030 September 1997 Monthly Operating Rept for Sept 1997 for Vermont Yankee Nuclear Power Station BVY-97-111, Monthly Operating Rept for Aug 1997 for Vermont Yankee Nuclear Power Station1997-08-31031 August 1997 Monthly Operating Rept for Aug 1997 for Vermont Yankee Nuclear Power Station BVY-97-098, Monthly Operating Rept for Jul 1997 for Vermont Yankee Nuclear Power Station1997-07-31031 July 1997 Monthly Operating Rept for Jul 1997 for Vermont Yankee Nuclear Power Station BVY-97-088, Monthly Operating Rept for June 1997 for Nynps1997-06-30030 June 1997 Monthly Operating Rept for June 1997 for Nynps BVY-97-074, Monthly Operating Rept for May 1997 for Vermont Yankee Nuclear Power Station1997-05-31031 May 1997 Monthly Operating Rept for May 1997 for Vermont Yankee Nuclear Power Station BVY-97-059, Monthly Operating Rept for Apr 1997 for Vermont Yankee Nuclear Station1997-04-30030 April 1997 Monthly Operating Rept for Apr 1997 for Vermont Yankee Nuclear Station BVY-97-042, Monthly Operating Rept for Mar 1997 for Vermont Yankee Nuclear Power Station1997-03-31031 March 1997 Monthly Operating Rept for Mar 1997 for Vermont Yankee Nuclear Power Station BVY-97-033, Monthly Operating Rept for Feb 1997 for Vermont Yankee Power Station1997-02-28028 February 1997 Monthly Operating Rept for Feb 1997 for Vermont Yankee Power Station BVY-97-021, Monthly Operating Rept for Jan 1997 for VYNPS1997-01-31031 January 1997 Monthly Operating Rept for Jan 1997 for VYNPS BVY-97-001, Monthly Operating Rept for Dec 1996 for Vermont Yankee Nuclear Power Station1996-12-31031 December 1996 Monthly Operating Rept for Dec 1996 for Vermont Yankee Nuclear Power Station BVY-96-154, Monthly Operating Rept for Nov 1996 for Vermont Yankee Nuclear Power Station1996-11-30030 November 1996 Monthly Operating Rept for Nov 1996 for Vermont Yankee Nuclear Power Station BVY-96-138, Monthly Operating Rept for Oct 1996 for Vermont Yankee Nuclear Power Station1996-10-31031 October 1996 Monthly Operating Rept for Oct 1996 for Vermont Yankee Nuclear Power Station BVY-96-114, Monthly Operating Rept for Sept 1996 for Vynp1996-09-30030 September 1996 Monthly Operating Rept for Sept 1996 for Vynp BVY-96-103, Monthly Operating Rept for Aug 1996 for Vermont Yankee Nuclear Power Station1996-08-31031 August 1996 Monthly Operating Rept for Aug 1996 for Vermont Yankee Nuclear Power Station BVY-96-095, Monthly Operating Rept for July 1996 for VT Yankee Nuclear Power Station1996-07-31031 July 1996 Monthly Operating Rept for July 1996 for VT Yankee Nuclear Power Station BVY-96-087, Monthly Operating Rept for June 1996 for Vermont Yankee Nuclear Power Station1996-06-30030 June 1996 Monthly Operating Rept for June 1996 for Vermont Yankee Nuclear Power Station BVY-96-072, Monthly Operating Rept for May 1996 for Vermont Yankee Nuclear Power Station1996-05-31031 May 1996 Monthly Operating Rept for May 1996 for Vermont Yankee Nuclear Power Station BVY-96-057, Monthly Operating Rept for Apr 1996 for VT Yankee Power Station1996-04-30030 April 1996 Monthly Operating Rept for Apr 1996 for VT Yankee Power Station BVY-96-041, Monthly Operating Rept for Mar 1996 for Vynp1996-03-31031 March 1996 Monthly Operating Rept for Mar 1996 for Vynp BVY-96-018, Monthly Statistical Rept for Feb 1996 for VT Yankee Nuclear Power Station1996-02-29029 February 1996 Monthly Statistical Rept for Feb 1996 for VT Yankee Nuclear Power Station BVY-96-009, Monthly Operating Rept for Jan 1996 for Vermont Yankee Nuclear Power Station1996-01-31031 January 1996 Monthly Operating Rept for Jan 1996 for Vermont Yankee Nuclear Power Station BVY-96-001, Monthly Operating Rept for Dec 1995 for Vermont Yankee Nuclear Power Station1995-12-31031 December 1995 Monthly Operating Rept for Dec 1995 for Vermont Yankee Nuclear Power Station ML20095F6601995-11-30030 November 1995 Last Page of Monthly Operating Rept for Nov 1995 for Vermont Yankee BVY-95-131, Monthly Operating Rept for Nov 1995 for Vermont Yankee Nuclear Power Station1995-11-30030 November 1995 Monthly Operating Rept for Nov 1995 for Vermont Yankee Nuclear Power Station BVY-95-118, Monthly Operating Rept for Oct 1995 for Vynp1995-10-31031 October 1995 Monthly Operating Rept for Oct 1995 for Vynp BVY-95-106, Monthly Operating Rept for Sept 1995 for Vynp1995-09-30030 September 1995 Monthly Operating Rept for Sept 1995 for Vynp ML20092F5901995-08-31031 August 1995 Monthly Operating Rept for Aug 1995 for Vermont Yankee Nuclear Station 1999-09-30
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217L8831999-10-21021 October 1999 Safety Evaluation Supporting Proposed Alternatives to Code Requirements Described in RR-V17 & RR-V18 ML20217G2041999-10-13013 October 1999 Safety Evaluation Supporting Amend 179 to License DPR-28 BVY-99-127, Monthly Operating Rept for Sept 1999 for Vermont Yankee Nuclear Power Station.With1999-09-30030 September 1999 Monthly Operating Rept for Sept 1999 for Vermont Yankee Nuclear Power Station.With ML20212C2551999-09-17017 September 1999 Safety Evaluation Supporting Amend 175 to License DPR-28 BVY-99-112, Monthly Operating Rept for Aug 1999 for Vermont Yankee.With1999-08-31031 August 1999 Monthly Operating Rept for Aug 1999 for Vermont Yankee.With BVY-99-109, Ro:On 990812,stack Ng Effluent Instrumentation for PAM Was Declared Oos.Caused by Instrument Drift Due to Electronic Components Based on Insps by Instrumentation & Controls Dept.Detector & Preamplifier Will Be Replaced on 9908311999-08-19019 August 1999 Ro:On 990812,stack Ng Effluent Instrumentation for PAM Was Declared Oos.Caused by Instrument Drift Due to Electronic Components Based on Insps by Instrumentation & Controls Dept.Detector & Preamplifier Will Be Replaced on 990831 BVY-99-102, Monthly Operating Rept for July 1999 for Vermont Yankee. with1999-07-31031 July 1999 Monthly Operating Rept for July 1999 for Vermont Yankee. with ML20209J0081999-07-14014 July 1999 Special Rept:On 990615,diesel Driven Fire Pump Failed to Achieve Rated Flow of 2500 Gallons Per Minute.Pump Was Inoperable for Greater than 7 Days.Corrective Maint Was Performed to Reset Pump Lift Setting BVY-99-090, Monthly Operating Rept for June 1999 for Vermont Yankee Nuclear Power Station.With1999-06-30030 June 1999 Monthly Operating Rept for June 1999 for Vermont Yankee Nuclear Power Station.With ML20196G5071999-06-23023 June 1999 Vynp Assessment of On-Site Disposal of Contaminated Soil by Land Spreading BVY-99-077, Monthly Operating Rept for May 1999 for Vermont Yankee Nuclear Power Station.With1999-05-31031 May 1999 Monthly Operating Rept for May 1999 for Vermont Yankee Nuclear Power Station.With BVY-99-068, Monthly Operating Rept for Apr 1999 for Vynp.With1999-04-30030 April 1999 Monthly Operating Rept for Apr 1999 for Vynp.With ML20206E8741999-04-29029 April 1999 SER Determined That Flaw Evaluation Meets Rules of ASME Code & Assumed Crack Growth Rate Adequate for Application ML20206D9301999-04-27027 April 1999 1999 Emergency Preparedness Exercise 990427 Exercise Manual (Plume Portion) ML20205S4211999-04-16016 April 1999 Non-proprietary Version of Revised Page 4-3 of HI-981932 Technical Rept for Vermont Yankee Spent Fuel Pool Storage Expansion ML20205K7581999-04-0707 April 1999 Safety Evaluation Supporting Alternative Proposal for Reexamination of Circumferential Welds with Detected Flaw Indications in Plant RPV BVY-99-046, Monthly Operating Rept for Mar 1999 for Vermont Yankee Nuclear Power Station.With1999-03-31031 March 1999 Monthly Operating Rept for Mar 1999 for Vermont Yankee Nuclear Power Station.With ML20205F6631999-03-0404 March 1999 Jet Pump Riser Weld Leakage Evaluation BVY-99-035, Monthly Operating Rept for Feb 1999 for Vermont Yankee Nuclear Station.With1999-02-28028 February 1999 Monthly Operating Rept for Feb 1999 for Vermont Yankee Nuclear Station.With ML20205P8241999-02-28028 February 1999 Rev 2 to Vermont Yankee Cycle 20 Colr ML20203H9881999-02-18018 February 1999 SER Accepting Alternative to 10CFR50.55a(g)(6)(ii)(A) Augmented Reactor Vessel Exam at Vermont Yankee Nuclear Power Station.Technical Ltr Rept Encl ML20203A6951999-02-0404 February 1999 Revised Rev 2,App B to Vermont Yankee Operational QA Manual (Voqam) ML20199K7151999-01-21021 January 1999 Corrected Safety Evaluation Supporting Amend 163 Issued to FOL DPR-28.Pages 2 & 3 Required Correction & Clarification ML20199K6991999-01-20020 January 1999 Safety Evaluation Concluding That Request to Use YAEC-1339, Yankee Atomic Electric Co Application of FIBWR2 Core Hydraulics Code to BWR Reload Analysis, at Vermont Yankee Acceptable ML20199L5951999-01-14014 January 1999 Safety Evaluation Accepting Licensee Proposed Alternative to Code Requirement,Described in Rev 2 to Pump Relief Request RR-P10 Pursuant to 10CFR50.55a(a)(3)(i) BVY-99-071, Corp 1998 Annual Rept. with1998-12-31031 December 1998 Corp 1998 Annual Rept. with BVY-99-001, Monthly Operating Rept for Dec 1998 for Vermont Yankee Nuclear Power Station1998-12-31031 December 1998 Monthly Operating Rept for Dec 1998 for Vermont Yankee Nuclear Power Station ML20198H5481998-12-23023 December 1998 Rev 2 to Vermont Operational QA Manual,Voqam ML20196H8641998-12-0101 December 1998 Cycle 19 Operating Rept BVY-98-163, Monthly Operating Rept for Nov 1998 for Vermont Yankee Nuclear Power Station.With1998-11-30030 November 1998 Monthly Operating Rept for Nov 1998 for Vermont Yankee Nuclear Power Station.With ML20195C4161998-11-0909 November 1998 SER Accepting Request That NRC Approve ASME Code Case N-560, Alternative Exam Requirement for Class 1,Category B-J Piping Welds BVY-98-154, Monthly Operating Rept for Oct 1998 for Vermont Yankee Nuclear Power Station.With1998-10-31031 October 1998 Monthly Operating Rept for Oct 1998 for Vermont Yankee Nuclear Power Station.With ML20155B6471998-10-26026 October 1998 Safety Evaluation Accepting Jet Pump Riser Insp Results & Flaw Evaluation,Conducted During 1998 Refueling Outage ML20154N0891998-10-16016 October 1998 Rev 1 to Vermont Operational QA Program Manual (Voqam) ML20154B6951998-10-0101 October 1998 SER Re Licensee Response to GL 95-07, Pressure Locking & Thermal Binding of Safety-Related Power-Operated Gate Valves, for Vermont Yankee Nuclear Power Station BVY-98-149, Monthly Operating Rept for Sept 1998 for Vermont Yankee Nuclear Power Station.With1998-09-30030 September 1998 Monthly Operating Rept for Sept 1998 for Vermont Yankee Nuclear Power Station.With ML20239A1361998-09-0202 September 1998 SER Re License Request for NRC Review & Concurrence W/Changes to NRC-approved Fire Protection Program BVY-98-135, Monthly Operating Rept for Aug 1998 for Vermont Yankee Nuclear Power Station.With1998-08-31031 August 1998 Monthly Operating Rept for Aug 1998 for Vermont Yankee Nuclear Power Station.With ML20151U0361998-08-28028 August 1998 Non-proprietary Rev 1 to Holtec Rept HI-981932, Vermont Yankee Nuclear Power Station Spent Storage Expansion Project ML20237E9221998-08-20020 August 1998 Vynp 1998 Form NIS-1 Owners Summary Rept for ISI, 961103-980603 BVY-98-122, Monthly Operating Rept for July 1998 for Vermont Yankee Nuclear Power Station1998-07-31031 July 1998 Monthly Operating Rept for July 1998 for Vermont Yankee Nuclear Power Station ML20205F6491998-07-31031 July 1998 Rev 1 to GE-NE-B13-01935-02, Jet Pump Assembly Welds Flaw Evaluation Handbook for Vermont Yankee ML20236G0011998-06-30030 June 1998 Individual Plant Exam External Events BVY-98-098, Monthly Operating Rept for June 1998 for Vermont Yankee Nuclear Power Station1998-06-30030 June 1998 Monthly Operating Rept for June 1998 for Vermont Yankee Nuclear Power Station ML20248C5081998-05-31031 May 1998 Rev 2 to 24A5416, Supplemental Reload Licensing Rept for Vermont Yankee Nuclear Power Station Reload 19 Cycle 20 ML20248C4951998-05-31031 May 1998 Rev 1 to Vermont Yankee Nuclear Power Station Cycle 20 Colr BVY-98-081, Monthly Operating Rept for May 1998 for Vermont Yankee Nuclear Power Station1998-05-31031 May 1998 Monthly Operating Rept for May 1998 for Vermont Yankee Nuclear Power Station ML20247J8341998-05-31031 May 1998 Peak Suppression Pool Temp Analyses for Large Break LOCA Scenarios, for May 1998 ML20247G4001998-05-12012 May 1998 Interview Rept of Ej Massey ML20247E6351998-04-30030 April 1998 Rev 1 to GE-NE-B13-01935-LTR, Jet Pump Riser Welds Allowable Flaw Sizes Ltr Rept for Vermont Yankee 1999-09-30
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1 i
k VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 81-12 FOR THE MONTH OF DECEMBER, 1981 1
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r 8211100027 820112 PDR ADOCK 05000271 R pop
OPERATING DATA REPORT DOCKET NO. 50-271 DATE 820112 COMPLETED BY F. J. Burger TELEPHONE (802)257-7711 Ext 137 OPERATING STATUS r
' Notes
- 1. Unit Name: Vermont Yankee
- 2. R porting Period: Dect.mber 1981
- 3. Licensed Thermal Power (int): 1593
- 4. Ntmeplate Rating (Gross We): 540
- 5. Design Electrical Rating (Net We): 514(oc) 504 Tec)
- 6. Maximum Dependable Capacity (Gross We): 535
- 7. Maximum Dependable Capacity (Net We): 504
- 8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7)Since Last Report, Give Reasonse
- 9. Power Level to Which Restricted,If Any(Net We):
- 10. R:asons For Restrictions, If Any:
This Month Yr-to-Date Cumulative
- 11. Hours In Reporting Period 744.00 8760.00 - - -
651.42 7542.37 65,078.15
- 12. Number Of Hours Reactor Was Critical 0.00 0.00 0.00
- 13. R: actor Reserve Shutdown Hours 576.73 63,011.19
- 14. Hours Generator On-Line 7409.61
- 15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
- 16. Gross Thermal Energy Generated (MWH) 806,141.50 11.312,243.50 89.915,760.50
- 17. Gross Electrical Energy Generated (MWH) 267,155.00 3,759,124.00 29.871.971.00
- 18. Nat Electrical Energy Generated (MWH) 256,031.00 t 568.707.00 28,316,286.00
- 19. Unit Service Factor 77;.52 84.58 77.47
- 20. Unit Availability Factor 77.52 84.58 77.47 68.28 80.83 69.07
- 21. Unit Capacity Factor (Using MDC Net) 66.95 79.26 67.73
- 22. Unit Capacity Factor (Using DER Net) 15.95 2.78 6.80
- 23. Unit Forced Outage Rate
- 24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):
- 25. If Shut Down At End Of Report Period, Estimated Date of Startup: -
- 26. Units In Test Status (Prior to Commercial Operation): Forecast Achieved INITIAL CRITICALITY \.
INITIAL ELECTRICITY COMMERCIAL OPERATION
AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 820112 COMPLETED BY F.J. Burger g pgggg (802) 257-7711 Ext 137 MONTH December 1981 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)
- 1. 0 17. 518
- 2. 0 18. 518
- 3. 28 19. 519 4, 61 20. 497
- 5. 29 21. 519
- 6. o 22. 520
- 7. 82 23. 520
- 8. 29s 24. 482
- 9. 3s2 25. 520
- 10. 396 26. 482 11, 481 27. 0
^
517 28. 70 12.
- 13. 511 29 : 365
- 14. 518 30. 398
- 15. 518 31. 488
- 16. 518 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.
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UNIT SilUTDOWNS AND POWER REDUCTIONS DOCKET NO 50-271 UNIT NAME Vermont Yankee REPORT MONTH December 1981 COMPLETE B J Burger TELEPHONE _(802) 257-7711 ext 137 l
1 of 2 m i
$oE N Y Ef o y Cause & Corrective No. Date j ;jy g ;jg License ge
- Action to H $ R port # 0 "*O n g u E
81-19 811016 S 57.80 C N/A N/A ZZ ZZ Refueling outage in progress (cont) 81-20 813203 F 17.38 A N/A N/A HA TURBIN Turbine rotor out of balance. Rebalanced rotor.
81-21 811205 F 56.90 A 2 N/A CB PUMPXX Shutdown to replace degraded reactor recirc -
r: culation pump seal.
81-22 811209 S 0 B 4 N/A RB CONROD Power reduction for control rod pattern (Power adjustment.
Reduct) 81-23 811220 S 0 B 4 N/A HA TURBIN Power reduction for main turbine and control (Power RB CONROD rod surveillance Reduct)
F: For[ed Reason: Method: Exhibit G- Instructions S Sdheduled A-Equipment Failure (Explain) ,
1- Manual' for Preparation of Data B-Maintenance or Test 2- Manual Scram Entry Sheets for Licensee C-Refuelingx 3- Automatic Scram Event Report (LER) File D-Regulatory Restriction 4- Other (Explain) (NUREG 0161)
E-Operator Training & License Examination F-Administrative 5 Exhibit I -_Same Source-G-Operational Error (Explain)
H-Other (Explain) n/rra
UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO 50-271 UNIT NAME Vermont Yankee REPORT MONTH December 1981 DATE 820112 COMPLETED BY F.J. Burger TELEPHONE (802) 257-7711 ext 13/
2 A cm u Eu u N@. Date is ME "c dO License En ause & Corrective E. NE E l$ U E Event E E$ " "
$2 $23 o
E M
fS$
em Report # E,0 m E"' O
% g U S
81-24 811224 F 0 A 4 N/A HG DEMINX Power reduction to precoat the "C" conden-(Power sate demineralizer. Spare demineralizer Reduct) already out of service 81-25 811226 F 35.18 A 3 N/A HB MECFUN Main turbine pressure regulator failed resulting in a high flux scram. Fail-ure caused by sticky mechanical linkage which was cleaned, lubricated, and adjustec .
81-26 811230 S 0 B 4 N/A RB CONROD Power reduction for a control rod pattern (Power CB PUMPXX adjustment and maintenance of the "B" Reduct) reactor recirculation pump speed control circuit.
1 2 3 4 F: Fogced Reason: Method: Exhibit G- Instructions S: Scheduled A-Equipment Failure (Explain) 1- Manual for Preparation of Data '
l B-Maintenance or Test , 2- Manual Scram Entry Sheets for Licensee C-Refueling 3- Automatic Scram Event Report (LER) File D-Regulatory Restriction 4- Other (Explain) (NUREG 0161) l E-Operator Training & License Examination I
F-Administrative ~,
Exhibit I - Same Source i
G-Operational Error (Explain)
H-Other (Explain) 7/80
DOCKET No. 50-271 -
UNIT Vermont Yankee ,,
DATE 820112 COMPLETED BY F.J. Burger TELEPHONE (802)257-7711 Ext 137 SAFETY RELATED MAINTENANCE 1 of 3 NATURE OF MALFUNCTION LER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION UPS System Alarms Corrective N/A Incorrect Wiring at Wrong Alarms Corrected Wiring Errors MR 79-0873 Annunciator Panel Annuciate CAD Isolation Valve Corrective N/A Dirt Valve Would Not Disasssabled and Cleaned FSO 109-75-D1 MR 81-0853 Shut Valve Rscirc Sample Valve, Corrective N/A Loose Clevis Hanger Not Sup- Tightened and Anchored FCU-40, Hanger MR 81-1217 porting Valve Clevis to Valve RWCU Valve V12-32B Corrective N/A Worn Packing Leakage Tightened Packing -
MR 81-1456 ,
RWCU Ragenerative Heat Ex- Corrective N/A Unknown Leakage Plugged Leak Off chtngs E-15-lC MR 81-1458 '
lInterConnectingPiping Canatruction Leak Off RHR Hast Exchanger- N/A Worn Gasket Leakage Replaced Gasket E-14-1B l Corrective MR 81-1459
.! ! Replaced Breaker Cora Spray Valve V14-11A Corrective LER 81-35/3L Fault / Breaker Breaker Tripped Mstor Operator Breaker MR 81-1460 -
During Operatior N
Drywell Pressure Indicator Corrective ' N/A Failed Amplifier Erroneous Readiog Replaced Amplifier PI-16-19-12A MR 81-1468 l
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DOCKET NO. 50-271 -
UNIT Vcra:nt Ycnkte ,
DATE 820112 COMPLETED BY F.J. Burger TELEPHONE (802) 257-7711 ext 137 SAFETY RELATED MAINTENANCE 2
NATURE OF MALFUNCTION LER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION R::ctor Recirculation Pump Corrective N/A Faulty Mechanical High Seal Temp- Rebuilt seal P18-1A MR 81-1470 Seal erature Drywell Personnel Access Corrective N/A Failed G asket Air Leakage Replaced Gasket Hitch Outer Door MR 81-1475 R::ctor Building Personnel Corrective N/A Loose Seal Air Leakage Adjusted Seal, Calked Air L ck Outer Door MR 81-1485 Door Casing S rvice Water Pump Corrective N/A Worn Packing Leakage Adjusted Packing.
P7-1B MR 81-1490 S:rvice Water Pump Corrective N/A Worn Packing Leakage Adjusted Packing P7-lD l-01 81-1491 Recctor Recirc Valves Corrective N/A Worn Packing Leakage Adjusted Packing V2-304A-C and V2-98A, Main MR 81-1498 Stera Valves V60-72B-F and 11
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RHR H ng$r H-192 Bolting Corrective N/A Construction Worn threads, Replaced Bolting j MR 81-1521 - Minimal Thread i Engagement RHR Service Water Valve Corrective N/A Worn Packing Leakage Adjusted Packing V70-89B MR 81-1530 i- _
DOCKET NO. 50-271 .
UNIT Vernont Yenk2e DATE 820112 COMPLETED BY F.J. Burger TELEFi!ONE (802) 257-7711 ext 137 SAFETY RELATED MAINTENANCE 3
NATURE OF MALFUNCTION ER OR OUTAGg MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION EQUIPMENT SLC Velve V11-25 Corrective N/A Corroded Seat Valve Leakage- Lapped Seating Surfaces MR 81-1572 Smrvics Water Pump Corrective N/A Worn Packing Leakage Adjusted Packing T7-1C MR 81-1582 RWCU Vsive V12-19B Corrective N/A Worn Packing Leakage Adjusted Packing MR 81-1604 RilR Service Water Pump Corrective LER 81-37/3L Worn Bushings Breaker Trips Replaced B2shings-P8-1A Circuit Breaker MR 81-1612 Upon Pump Start e*
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DOC".ET No. 50-271 UNIT Vermont Yankee DATE 820112 COMPLETED BY F.J. Burger TELEPHONE (802) 257-7711 ext 137 REPORT MONTH December 1981
SUMMARY
OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 68.02% of rated thermal power for the month.
Gross electrical generation was 267,155 MWH, or66.50% of design electrical capacity.
Operating Summary The following is a chronological description of plant operations including other pertinent items of interest for the month:
12/1/81 At the beginning of the reporting period the plant was shut down for refueling.
At 1949 hours0.0226 days <br />0.541 hours <br />0.00322 weeks <br />7.415945e-4 months <br /> a reactor start up was initiated.
12/3/81 At 2010 hours0.0233 days <br />0.558 hours <br />0.00332 weeks <br />7.64805e-4 months <br />, after completing main turbine overspeed testing, the main turbine was shut down for rotor balancing.
12/4/81 At 1333 hours0.0154 days <br />0.37 hours <br />0.0022 weeks <br />5.072065e-4 months <br /> the main turbine was phased into the grid.
12/5/81 At 0220 hours0.00255 days <br />0.0611 hours <br />3.637566e-4 weeks <br />8.371e-5 months <br /> a reactor shutdown was initiated to replace a degraded seal in the "A" reactor recirculation pump.
12/7/81 At 0152 hours0.00176 days <br />0.0422 hours <br />2.513228e-4 weeks <br />5.7836e-5 months <br /> a reactor start up and power ascension was initiated 12/9/81 At 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br /> a power reduction was initiated for a control rod pattern adjustment. ,
At 1730 hours0.02 days <br />0.481 hours <br />0.00286 weeks <br />6.58265e-4 months <br /> a return to full power initiated.
12/20/81 At 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> a power reduction was initiated for control rod and main turbine surveillance testing.
At 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> a return to full power was initiated.
12/24/81 At 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> a power reduction was initiated to remove the "C" condensate demineralizer from service for precoating. The sparc demineralizer was already out of service.
At 0610. hours a return to full power was initiated.
12/26/81 At 1944 hours0.0225 days <br />0.54 hours <br />0.00321 weeks <br />7.39692e-4 months <br /> the plant was shutdown by a , reactor high flux scram caused by a faulty main turbine pressure regulator.
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12/27/81 At 2035 hours0.0236 days <br />0.565 hours <br />0.00336 weeks <br />7.743175e-4 months <br /> a reactor start up and return to full power,was initiated.
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Operating Summary (continued) I 12/30/81 At 0900 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.4245e-4 months <br /> a power reduction was initiated for a control rod pattern adjustment and maintenance of the "B" reactor recirculation pump speed centrol circuit.
At 1030 hours0.0119 days <br />0.286 hours <br />0.0017 weeks <br />3.91915e-4 months <br /> a return to full power was initiated.
12/31/81 At the end of the reporting period the plant was operating at 99.7% of rated thermal power.
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