ML20064N465

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Monthly Operating Rept for Jan 1983
ML20064N465
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 02/09/1983
From: Burger F
VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20064N459 List:
References
NUDOCS 8302160244
Download: ML20064N465 (7)
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1 VERMONT YANKEE NUCLEAR POWER STATION 6

4 MONTHLY STATISTICAL REPORT 83-01 4-i FOR THE MONTH OF JANUARY, 1983 4

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i 8302160244 830209 PDR ADOCK 05000271 R PDR r

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OPERATING DATA REPORT DOCKET NO. 50-271 DATE 830209 COMPLETED BY F.J. Burger TELEPHONE TdU2 N 7711 Ext. 136 OPERATING STATUS Notes

1. Unit Name: V.ermont Yankee
2. Reporring Period: January
3. T.fransad Tharmal Powar N r)* 1593
4. Nameplate Rating (Gross MW): 540
5. Design Electrical Rating (Gat MWe): 514(oc) 504 (cc)
6. Maxinium Dependable Capacity (Gross MWe): 535 7.. Maximum Dependable Capacity (Net MWe): 504
8. If Changes occur in Capacity Ratings (Items Number 3 Through 7)Since Last Report, Give Reasoi N/A
9. Power Level to Which Restricted,If Any(Net MWe): N/A
10. Reasons For Restrictions, If Any: N/A This Month Yr- to-Date Cumulative
11. Hours In Reporting Period 744.00 744.00
12. Number Of Hours Reactor Was Critical _

703.36 703.36 74.246.35

13. Reactor Reserve Shutdown Hours 0.00 0.00 _

0.00

14. Hours Generator On-Line 691.20 691.20 72.110.89 l 15. Unit Reserve Shutdown Hours 0.00 0.00 0.00 l 16. Gross Thermal Energy Generated (MWH) 979,792.50 979.792.50 _ 104.019.035.00
17. Gross Electrical Energy Generated (MWH) 329,329.00 329.329.00 34.590.476.00
18. Net Electrical Energy Generated (MWH) 315,162.00 315,162.00 32,805,703.00
19. Unit Service Factor 92.90 92.90 79.38
20. Unit Availability Factor 92.90 92.90 _.

79.38

21. Unit Capacity Factor (Using MDC Net) 84.05 84.05 71.65 l
22. Unit Capacity Factor (Using DER Net) 82.41 82.41 70.26
23. Unit Forced Outage Rate 7.10 7.10 6.37
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

An eicht week refueline outace is schoduled en senre %.-ch 9 t on l 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 I DOCKET NO. 50-271 CNIT Varmont Yankee 4

DATE 830209 _ _ _

COMPLETED BY F.J. Burger TELEPHONE (802) 257-7711 Ext.1)

MONTH January DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 490 17, 479 2, 485 18. 471
3. 488 19, 470
4. 486 20. 461
5. 484 21. 460
6. 483 22. 460
7. 483 23. 453 44 24. 458 8.

0 25. 462 9.

10. 142 26. 460
11. 422 27. 459 l
12. 486 28. 455

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476 29. 456 13.

476 449

14. 3 0._

15, 335 -31. 452 448 16.

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 megawact.

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UNIT SiluTDOWNS AND POWER REDUCTIONS 50-271 DOCKET UNIT NAME ~ NO - Vermont Yankee REPORT MONTil January DATE __ 830209 COMPLETED BY F.J. Burger TELEP110NE [ (802) 257-7711 Ext. 136

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I a am m Su u No. Date o 00 "a MO Cs ise & Conce t iste License se @c ACEI"" '"

E. NE O 3 I$ N Event 3$ 5.@

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OM Report # $0 gO *##"' N"I'"'"

C3 M o E g u S

83-01 830108 F 52.8 A 1 N/A HH PIPEXX Plant shutdown to repair a leak in the LEK main turbine moisture separator drain .

CG PIPEXX 83-02/IP Pii P ng and leakage from RWCU line CUW-19.

See LER for details of the CUW-19 leak repair.

83-02 830115 S 0 B 4(Power N/A RB CONROD Power reduction for a control rod pattern Reductic a) exchange and turbine surveillance.

F: Forced Reason: Method: 'xhibit G- Instructions S: Scheduled A-Equipment Failure (Explain) 1- Manual .or Preparation of' Data B-Maintenance or Test 2- Manual Scram Intry Sheets for 1.icensee C-Refueling 3- Automatic Scram Ivent Report (LER) File D-Regulatory Restriction 4- Other (Explain) 2NUREC 0161)

E-Operator Training & License Examination 5

F-Administrative 1 xhibit I - Same Source l G-Operational Error (Explain)

II-Other (Explain)

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DOCKET No. 50-271 UNIT Vermont Yankee

  • DATE 830209 COMPLETED BY F.J. Burger TELEP110NE (802) 257-7711 Ext. 136 SAFETY RELATED MAINTENANCE Pag I f2 NATURE OF LER OR OUTAGE MALFUNCTILN EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORREC~ LIVE ACTIr Cucput Breaker for the Corrective N/A Failed Parts Breaker Woulcn't Replaced Breaker.

"B" 24 VDC Neutron MR 82-0631 Stay Closed Monitoring Battery Reactor Recirc Pun.p Corrective N/A Alarm Limit Ala'm r Energized Adjusted Limit Switch Discharge Valve V2-53A MR 82-1059 Switch Out of Out of Service Alarm Adjustment Deadweight lianger Corrective N/A Improper Threaded Rod Re-engaged Threaded Rod ASCP-IID-25A MR 82-1367 Installation Disengaged From and Tightened All Bolting.

Ilanger MSIV 80-D RPS Rel-ly Corrective N/A Limit Switch Out Relay Dropped Adjusted I.imi t Switch.

MR 82-1388 of Adjustment Out Too Soon liPCI Steam Valve V23-15 Corrective N/A Loose and Dirty Indicated Adjusted and Cleaned Position Indicator MR 82-1520 Switch Contacts Increased Valve Switch Contacts Stroke Time MSIV 80-B Testing Corrective N/A Sluggish Pilot Upon Release of Replaced Pilot Valve Mechanism MR 83-0005 Valve Slow Closure Test Button Valve is Slow To Re-open.

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DOCKET NO. _

50-271 ,

UNIT Vermont Yankee -

DATE 839209 COMPLETED BY F.J. Burger TELEP110NE (802) 257-7711 Ext. 136 SAFETY RELATED MAINTENANCE Page 2 of 2 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTI Drywell Nitrogen Corrective LER Valves Would Dirt Disassembled and .

tbkeup Valves SB16-20-20 MR 83-0015 83-1/IP Not Close Cleaned Actuators and SB 16-20-22B Solenoid Actuators RWCU, CUW-19 Line Corrective LER See LER 1.oakage Replaced One Elbow MR 83-0020 83-2/IP Containment Air Corrective N/A Loose Bolting Air Leakage From Tightened Botting Compressor Suction MR 83-0032 Actuator Valve V72-38A Actuator "A" Emergency Diesel Corrective LER Failed Cooling Low Jacket Replaced lleater and Generator MR 83-0054 83-3/3L Water Feater and Coolent Temp. Cleaned Check Valve.

Stuck Open Fuel and Slow Star:

Return lleader Time Check Valve "A" RBCCW Pump Suction Corrective N/A Vibration Gage Stuck Re-connected Bourdon Tube Pressure Gage MR 83-0121 Disconnected liigh Bourdon Tube

DOCKET NO. __

50-271 UNIT Vermont Yankee DATE 830209 COMPLETED BY F.J. Burger TELEPHONE (802) 257-7711 Ext. 136 REPORT MONTH January SUNNARY OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 82.66% of rated thermal power for the month.

Gross electrical generation was 329329. MWH, or 81.97% of design electrical capacity.

Operating Summary The following is a chronological description of plant operations including other pertinent items of interest for the month:

At the beginning of the reporting period the plant was operating at 94.71% of rated thermal power.

830108 At 0102 hours0.00118 days <br />0.0283 hours <br />1.686508e-4 weeks <br />3.8811e-5 months <br />, a. shutdown was initiated to repair leaking main turbine

. moisture separator drain piping and leakage from RWCU line CUW-19.

830108 At 0413 hours0.00478 days <br />0.115 hours <br />6.828704e-4 weeks <br />1.571465e-4 months <br />, the generator was removed from the grid.

830108 At 0647 hours0.00749 days <br />0.18 hours <br />0.00107 weeks <br />2.461835e-4 months <br />, the reactor was manually scrammed.

830109 At 2325 hours0.0269 days <br />0.646 hours <br />0.00384 weeks <br />8.846625e-4 months <br />, the reactor was critical.

830110 At 0901 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.428305e-4 months <br />, the generator was phased to the grid. ,

830115 At 0030 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, a power reduction was initiated for a control rod pattern exchange and turbine surveillance.

830115 At 0315 hours0.00365 days <br />0.0875 hours <br />5.208333e-4 weeks <br />1.198575e-4 months <br />, a return to full power was started.

At the end of the reporting period the plant was operating at 88.03% of rated thermal power. The coastdown toward the March 1983 refueling was in progress.

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