ML19284A726

Monthly Operating Rept for Feb 1979

ML19284A726
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	03/12/1979
From:	Sjogren R VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML19284A723	List: ML19284A722 ML19284A726
References
NUDOCS 7903150249
Download: ML19284A726 (6)

Text

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VERM0!!T YAllKEE ITUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 79-02 FOR THE MONTH OF FEBRUARY, 1979 700315 0 cRt/7

l OPERATLNG DATA REPORT DOCKET NO. 50-271 DATE 790312 CONIPLETED BY 9 " 9incren TELEPil0NE (617)366-9011 x2281 OPERATING STATUS otes

1. Unit Name: Vert'ont Yankee

2. Reporting Period: Febcuarv, 1979

3. Licensed Thermal Power (SIWt): 1593

4. Nameplate Rating (Gross .\lWe): 540

5. Design Electrical Rating (Net 31WeJ:514 (Onen Cvele) 504(Clo: ed Cycle)

6. Sf aximum Dependable Capacity (Gross 31We): 535

7. Sf aximura Dependable Capacity INet SIWE): 504 S. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report. Gise Reasons:

9. Power Lesel To which Restricted,If Any (Net .\1We):

10. Reasons For Restrictions,if Any:

(

This Stonth Yr. to-Date Cumulative

!!. Ilours in Reporting Period 672 1,416 -56,450.75

12. Number Of flours Reactor Was Critical 67' _

1 ^16 45 105 81 13 Reactor Resene Shutdown 11ours 0 0 0

14. Ilours Generator On-Line 672 _

1,416 43,549

15. Unit Reservs Shutdown Ilours 0 0 0

16. Gross Thermal Energy Generated (SIWil) 1,061,472.5 2,238,705 60,625,522.5 .

17. Gross Electrical Energy Generated (51Wil) 363,432 _ 766,582 20,106,050 18 Net Electrical Energy Generated (SIWil) 348,916 736,123 19,055,652

19. Unit Senice Factor 100 100 77.1

20. Unit Asailability Factor 100 100 77.1

21. Unit Capacity Factor (Using SIDC Net) 103 103.2 67.0

22. Unit Capacity Factor (Using DER Net) 101 101.2 65.7

23. Unit Forced Outage Rate 0 0 7.1

24. Shutdowns Scheduled Oser Nest 6.\1onths (Type. Date,and Duration of Each):

March 17, 1979 2 weeks refueling

25. If Shut Down At End Of Report Period. Estimated Date of Startup:

26. Units In Test Status (Prior to Commercial Operationi: Forecast Achiesed INITIA L CRITICA LITY INITIAL ELECTRICITY CON!st ERCI A L OPER ATION (9/77)

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 790312 CONIPLETED BY R. h. Sjoeren TELEPfl0NE (617)366-9011 x2281 SiONTil February, 1979 DAY AVER AGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL (S!We-Net) (31we. Net !

y 523 3 .,

522 523 504 2 18 3 524 19 520 4 510 522 20 523 522 5 21 521 523 6

7 523 522 23 8 524 522 24 9

523 489 25 10 524 523 26 11 498 2, 522 12 522 524 33 13 522 9

520 14 15 520 31 16 522 INSTRUCTIONS On this format.hst the average dady unit power lesel in N!We. Net for each day in the reportin;: month. Compute to the nearest whole megawatt.

(0177)

DOCKET NO. 50-271 UNIT SilUlDOWNS AND POWER REDUCTIONS UNIT NAh!E Vermont Yankee DATE 790312 COMPLETED ltY R. M. Sincren REPORT AIONTil February, 1979 TELLP110NE (617) % 6-9011 x2281 C

g

.5 E }:; $ $i Licensee ~cs, D, Cause & Corrective No. Date 5g ,j g 5 Event

{? 93 Action to F jE 5 5gc e

Itcport # mV u

EU Prevent Itecurrence g

c 79-3 790204 S O 11 4 --

NA NA 11- Turbine Surveillance (Power Iteduc t i on)

I 2 3 4 F: l'ois ed Iteason: Metliod: Extiibii G - Instructions S. Scheduled A-lhpulunent F.nturc (Explain) 1-Manual for Picparation of Daia II. Maintenance or Test 7 Manual Serain. Entry Sheets f or 1.icensec C Itclueling 3 Automatic Serain. Event Iteporn (Ll!!t) 1 de INUlti.G-D.Itegulatory Itestriction 4 Other (lixplain) 0161) li Dpeutor l~iaining & License Examination

. F. A ib oi ni' t e a s i .'c $

G ()pe r a tion.il I .e s or (l .xplain ) Ex!nbit 1 - SJmC SoulcC Pr/17) II (Illie: (l!xplain)

DOCKET NO. 50-271 UNIT Vermont Yankee DATE 790312 COMPLETED bY R. M. Sjogren TELEPIIONE (617) 366-9011 x2281 SAFETY RELATED flAINTENANCli NATURii OF Ll!R OR OUTAGli MALIUNCTION EQUIP?!ENT F1AINTliNANCE NU!!BER CAUSli 1:LSU LT ColulECTIVli AC1 ION LPRM Ion Chamber Power Preventive NA Possible Component False 111 Flux Trip Replace Parts as necessary Supplies MR 78-1107 Deterioration "A" Diesel Generator Fuel Corrective NA Dirt Buildup High Differential Replaced Filter Oil Filter MR 79-80 Pressure "A" 125V Battery / Charger Corrective NA Damaged Indicating AC Input Indication Replaced Socket Assembly MR 79-87 Light Socket Lost i

"A" Fuel Pool ARM Corrective NA Failed Parts Downscale Indication Replaced Parts as necessar MR 79-94 Torus Level Transmitter Corrective LER 79-04/3L Dirt Buildup Failed Transmitter Replaced transmitter 16-19-38A MR 79-129 "A" Fuel Pool ARM Corrective NA Failed Parts Spurious Alarms Replaced Parts as necessary MR 79-131 Causing Group 3 79-140 Isolation SBCT Fan REF 2A Preventive NA Worn Belts Belt Slippage Replace Belts MR 79-137 APRM "F" Corrective NA Failed Parts Drifting Indication Replaced Parts as necessary MR 79-141 "A" SBCT Demister Preventive NA Dirt Excessive Demir,ter Replaced Demister MR 79-142 Differential Pressure "C" Main Steam Line Corrective NA Loose Packing Leakage at valve Adjusted Packing

, Drain Pot Isolation MR 79-157 stem

• Valve MS 802

+

DOC::ET NO. 50-271 UNIT Vermont Yankee DATE 790312 CO:!PLETED BY R. M. Sjouren TELEPl!O:'E (617)366-9011 x2281 REPORT '!ONT!! rebruary, 1979 SU:0!ARY OF OPERATING EXPERIENCES Highlights Ve rmon t Yankee operated at 99.2% of rated thermal power for the month of February, 1979. Gross electrical generation for the month was 363,432 Enha, Operations Summary The following is a chronological description of plant operations including other pertinent items of interest for the month:

2-1 At the beginning of this report period, the plant was operating at 99% of rated thermal power.

2-4 At 060] hours power was reduced to,78% for turbine surveillance. A return to full power was initiated at 0700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br />.

2-28 At the conclusion of this report period, the plant was operating at 99% of rated thermal power.