ML19341A045
| ML19341A045 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 01/13/1981 |
| From: | Bernard D VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | |
| Shared Package | |
| ML19341A044 | List: |
| References | |
| NUDOCS 8101210505 | |
| Download: ML19341A045 (11) | |
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1 VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL" REPORT 80-12 FOR THE MONTH OF DECDiBER, 1980 l
l 8101210$
OPERATING DATA REPORT DOCKET NO.
50-271 DATE 810113 COMPLETED BY D. Bernard TELEPHONE 617-872-8100 ext. 2390-OPERATING STAIUS_
- l. Unit Name:
Vermont Yankee
- 2. Reporting Period:
December
- 3. Licensed Thermal Power (Wt):
1593
- 4. Nameplate Rating (Gross We):
540
- 5. Dasign Electrical Rating (Net We): 514 (one-O 504 (ci ned)
- 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 Reasons:
- 9. Power Level to Which Restricted,If Any(Nec We):
- 10. Rsasons For Restrictions, If Any:
This Month Yr--to-Date Cumulative
- 11. Hours In Reporting Period 744.00 8,784.00
- 12. Number Of Hours Reactor Was Critical 110.50 6.377.39 57.535.78
- 13. Rsactor Reserve Shutdown Hours 0.00 0.00 0.00
- 14. Hours Generator On-Line 73.70 6,273.80 55.601.58 0.00 0.00 0.00
- 15. Unit Reserve Shutdown Hours
- 16. Gross Thermal Energy Generated (WR) 30,933.00 9,378,904.00 78,603,517.00
- 17. Gross' Electrical Energy Generated (W R) 7.171.00 3.143.177.00 26.112.847.00
- 18. Nst Electrical Energy Generated (WH) 6.406.00 2.979.214.00 24 747 979 nn
- 19. Unit Service Factor o of 71 e 75_s1
- 20. Unit Availability Factor 9.91 71.42 76.61
- 21. Unit Capacity Factor (Using MDC Net) 1.71 67.29 67.65
- 22. Unit Capacity Factor (Using DER Net) 1.68 65.09 AA u
- 23. Unit Forced Outage Rate 90.06 13.11 7.31
- 24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):
l
- 25. If Shut Down At End Of Report Period, Estimated Date of Startup:
L 26. Units In Test Status (Prior to Commercial Operation):
Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION
AVERAGE DAILY UNIT P0kT.R LEVEL i
4 DOCKET NO.
50-271 UNIT Vermont Yankee l
DATE 810113 l
CCMPLETD 3Y F.J. Burger 1
1 TELEPHONE 802-257-7711 Ext. 137 l
i MONTE December DAY AVERAGE DAILY POWER LE7EL DAY A7ERAGE DAILY PCWER LEVEL (MWe-Net)
(MWe-Net) 1.
0 17.
0 2.
O la, 0
3.
0 19, 0
4.
0 20.
0 5.
0
,1, 0
6.
o 22.
n 7.
o 23.
n 3.
o 24.
n 9.
o 25.
n 10.
0 2...
o 11.
0 27.
0 12.
0 28.
15 13.
0 29.
73 14.
0 30.
90 13.
0 31.
89 l
l 16.
O INSTRUCTIONS:
Cu :his fornac, list :he average daily uni: pcwer level in MWe-Ne: for each day in
- he reporting non:h. Ccmpute to che neares: whole negawatt.
l
UNIT SilUTDOWNS AND POWER REDUCTIONS DOCKET NO 50-271 UNIT NAME Vermont Yankee REPORT MONTil December COMPl.ETED BY F.J. Burger TELEPilONE 802-257-7711 Ext. 137 Page 1 of 2 E7
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cause & Corrective ca o
No.
Date y
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S 80-22 801124 F
559.9 A*
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80-37/1T CG PIPEXX The pipe cracking is believed to have been (cont) caused by ICSCC. The Sweep-0-Let is under-going a failure analysis to determine the cause of the cracking.
The Sweep-0-Let and piping are being replaced with materials which meet the Intent of Section II of NUREG 0313, Rev. 1, dated October, 1979.
- See RO 80-37/1T 80-23 801224 F
1.0 A
3 N/A Cll INSTRU Reactor scram caused by a combination of a llA MECFUN feedwater instrument failure and a Turbine Generator mechanical pressure regulator malfunction.
I r: Forced Reason:
Method:
Exhibit G-Instructions S: Scheduled A-Equipment Failure (Explain)
'l-Manual for Preparation of l>ata ll-Ma tutenance or Test 2-Manual Scram Entry Sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Other (Explain)
E-Operator Training & License Examination F-Administrative Exhibit I - Same Source G-Operational Error (Explain)
II-Other (Explain)
, ann
IINIT SilVTDOWNS AND POWER REDUCTIONS DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 810113 REPORT MONTil December COMPl.ETED BY F.J. Burger TEl.EPil0NE 802-257-7711 Ext. 137 Page 2 of 2 E9 Y
y Cause & Corrective m
o License No.
Date
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80-24 801225 F
106.9 A
4 N/A CF VALVEX Maintained reactor shutdown from previous scram to repair RllR System valve leakage.
80-25 801229 S
2.5 B
N/A N/A N/A N/A Turbine Ge.wrator removed from the grid for oversp.ted testing.
I F: Forced Reason:
Mettrod:
Exhibit G-Instructions S: Scheduled A-Equipment Failure (Explain)
'l-Manual for Preggration of Data B-Haintenance or Test 2-Manual Scram Entry Sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Other (Explain)
E-Operator Training & License Examination 5
F-Administrative F.xhibit I - Same Source G-Operational Error (Explain)
II-Other (Explain)
DOCKET NO.
50-271 UNIT Vermont Yankee DATE 810113 COMPLETED BY F.J.
Bureer TELEPHONE 802-257-7711 Ext _ 117 SAFETY RELATED MAINTENANCE Page 1 of 5 NATURE OF MALFUNCTION ER OR OUTACE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION "D" RilR Pump,P-10-ID Corrective N/A Normal Operation Seal Leakage Replaced Seal MR 80-0289 Instrument Isolation Corrective N/A Normal Operation Leakage Repacked Valve Valve V2-12B MR 80-0508 A-D kliR Pumps Corrective N/A NoL'al Operation Leakage Replaced Tubing and Connec-P-10-1A +1D Seal Water MR 80-0804 tions Supply Connections at pump suctions Containment Air Monitor Corrective N/A Shifted Valve Leakage Installed Re-designed Isolation Valve 76 A MR 80-0995 Internals Prevent-Valve Internals Supplied ed Closure by the Factory CRD liydraulic Control Unit Corrective N/A Normal Operation Air Leakage Replaced Solenoids and 14-31 Air Solenoids MR 80-1045 Rebuilt Valves
- 3 TIP Machine Containment Corrective N/A Normal Operation Leakage Replaced Seals Penetration MR 80-1051 CRD liydraulic Control Corrective N/A Set Point Drift Out of Calibra-Recalibrated Switch Unit 30-07 Alarm Pressure MR 80-1127 tion Switch RWCU line CUW-18 Corrective LER 80-37/IP 3ee LER Leakage Replaced Affected Compon-MR 80-1133 ents
DOCKET NO.
50-271 UNIT Vermont Yankee DATE 810113 COMPLETED BY F.J. Burger TELEP110NE 802-257-7711 Ext. 137 SAFETY RELATED MAINTENANCE Page 2 of 5 NATURE OF MALFUNCTION ER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION RilR Piping Support Corrective N/A Construction Rejectable NDT Removed Indications llD-200D MR 80-1134 Defects Indication on the Pipe to Saddle Welds llPCI Piping Support 11-31 Corrective N/A
' Normal Operation Loose Turnbuckle Tightened Turnbuckle MR 80-1153 Spring llangers llPCI-3 and Corrective N/A Normal Operation Settings Out of Reset llangers ti-107A, RilR llD-194C and MR 80-1187 Spec.
IID-87C. RR-65 and 66, CSilD-84 R11R Pumps P 10-1A rC Preventive N/A Updated Informa-Need for New Replaced Seals MR 80-1200 tion f rom the Type "0" Ring Factory RilR Minimum Flow Valve Corrective N/A Failed Breaker Valve Inoper-Replaced Breaker V10-16A MR 80-1246 able Shock Suppressor RilR-4 Corrective N/A Jarred During Fluid Leakage Rebuilt Suppressor MR 80-1255 Outage Maintenance Spring liangers RR 29 and Corrective N/A Normal Operation Setting Out of Reset llangers 30, RilR 11D-16 and llD 189 MR 80-1302 Spec.
o DOCKET NO.
50-271 UNIT Vermont Yankee DATE 810113 COMPLETED BY F.J. Burger TEI.EP110NE 802-257-7711 Ext.- 137 SAFETY RELATED MAINTENANCE Page 3 of 5 NATURE OF MALFUNCTION ER OR OMGE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION "B" RPS !!G Set UV Relay Corrective N/A Worn Parts Did Not Trip Replaced Breaker MR 80-1316 "E" IRM Bypass Switch Corrective N/A Worn Parts Relay Inopera-Replaced Relay Relsy MR 80-1317 ble Service Water Pumps Corrective N/A Normal Operations Out of Cal.
21eaned and Recalibrated P7-1A ~ D Discharge MR 80-1347 3 ages.
Pressure Gages Service Water Pump P7-1A Corrective N/A Normal Wear Packing Leak Repacked Pump MR 80-1354 RWCU Valve V12-18 Corrective N/A Normal Wear Bonnet Seal Replaced Seal Ring MR 80-1360 Leakage Shock Suppressor Corrective N/A Normal Operation I.eakage at Sight Refilled Reservoir and RR 76 MR 80-1361 31 ass Tie.htened Fittings Reactor Drain Valve V2-99 Corrective N/A
, Normal Operation Packing Leak Repacked Valve MR 80-1380 RilR Valve V10-81A Corrective N/A Normal Operation Packing Leak Adjusted Packing MR 80-1381 RllR Valve V10-46A Corrective N/A Normal Operation llonnet Leakage Replaced Gasket MR 80-1382
DOCKET NO.
3o-271 UNIT Vermont Yankee DATE 810113 COMPLETED BY F.J. Burger TELEP110NE 802-257-7711 Ext. 137 SAFETY RELATED MAINTENANPE Page 4 of 5 NATURE OF MALFUNCTION ER OR OU'I' ACE EQUIPMENT HAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION IIPCI Valve V23-19 Corrective N/A Normal Operation Packing Leak Adjusted Packing MR 80-1383 RCIC Valve V13-22 Corrective N/A Normal Operation Packing Leak Adjusted Packing MR 80-1384 Level Switch LS-6-52B Corrective N/A Normal Operation Tubing Joint Replaced Fittings MR 80-1385 Leak Lsvel Switch LS-2-3-72B Corrective N/A Normal Operation Tubing Joint Tightened Fittings MR 80-1386 Leak RCIC Valve V13-15 Corrective N/A Normal Operation Bonnet Leakage P.eplaced Seal Ring MR 80-1388 RCIC Valve V13-15 Corrective LER 80-43/3L Normal Operation Excessive Seat Lapped Disc and Seat v3 80-1408 Leakage "B" Diesel Pyrometers Corrective N/A Vibration Not Indicating Resoldered Connections
- 4 & #6 Cylinder MR 80-1437 RilR Valve V10-27A Corrective Outage 80-24 Normal Operation Excessive Seat Replaced Parts Ad Necessary MR 80-1442 Leakage R11R Valve VJ0-46A Corrective Outage 80-24 Normal Operation Excessive Seat Replaced Parts As Necessary MR 80-1443 Leakage
DOCKET No.
50-271 UNIT Vermont Yankee DATE 810113 COMPLETED BY F.J. Burger TELEPHONE 802-257-7711 Ext. 137 SAFETY RELATED MAINTENANCE Page 5 of 5 NATURE OF MALFUNCTION LER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION RilR Valve V10-81A Corrective Outage 80-24 Failed Packing Leakage Repacked Valve MR 80-1454 9
~.
- 50-271 DOCKET NO.
Vermont Yankee UNIT DATE 810113 C0XPLETED BY F.J. Burger TELEPH0:TE 802-257-7711 Ext. 137 December REPORT MONTH SLS ARY OF OPERATING EXPERIENC_ES_
Highlights Vermont Yankee operated at 2.6%
of rated thermal power for the month.
Gross electrical generation was 7171 MWH or 1.8% of design electrical capacity.
Ocerating Sanmary The following is a chronological description of plant operations including other pertinent items of interest for the month:
12/1/80 At the beginning of the reporting period the plant was shutdown
[
for the replacement of Reactor Water Cleanup System piping.
12/23/80 At 1910 hrs. a reactor startup was initiated. Criticality was reached at 1950 hrs.
12/24/80 At 0752 hrs. the reactor scrammed due to a combination of a feedwater instrument failure and a malfunction of the turbine generator mechanical pressure regulator.
At 0852 hrs. the shutdown was continued to repair excessive valve seat leakage in the RHR system.
12/27/80 At 2050 hrs. a reactor startup was initiated. Criticality was re :hed at 2128 hrs.
12/28/80 At 1948 hrs. the turbine generator was phased onto the grid.
12/29/80 At 0939 the turbine generator was removed from the grid for overspeed testing. At 1207 the turbine generator was phased onto the grid.
Power was maintained at 23% due to the replacement of additional Reactor Water Cleanup piping.
12/31/80 At the end of the reporting cycle the plant was at 23% of rated l
thermal power.
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