ML19256F083

Monthly Operating Rept for Oct 1979

ML19256F083
Person / Time
Site:	Yankee Rowe
Issue date:	11/13/1979
From:	Sjogren R YANKEE ATOMIC ELECTRIC CO.
To:
Shared Package
ML19256F082	List: ML19256F081 ML19256F083
References
NUDOCS 7911210322
Download: ML19256F083 (5)

Text

1 VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 79-10 FOR THE MONTH OF OCTOBER, 1979 1380 113 7 911210 3AA

q OPERATING DATA REPORT DOCKET NO. 50-271 DATE 791113 C051PLETED BY R. M. Sjogren TELEPHONE 617) 360-9011 X2281 OPERATING STATUS

l. Unit Name:

Vermont Yankee Notes

• time change during report period.

October 1979

2. Reporting Period:

3. Licensed Thermal Power (5 twt):

1,593 540

4. Nameplate Rating (Gruss SIWE):

5. Design Electrical Rating (Net SIWE): 514 (open evele) 504 (closed cycle) 535

6. 51aximum Dependable Capacity (Gross SIWE):

514

7. Sf aximum Dependable Capacity (Net SIWE):

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 (Net 51We):

10. Reasons For Restrictions.lf Any:

This Slonth Yr.-to-Date Cumulative

• 745 7,296

11. Hours in Reporting Period

12. Number Of Hours Reactor Was Critical

.25 5,851.56 49,741.39

13. Reactor Resene Shutdowa Hours 0.0 0.0 0.0.

14. Hours Generator On-Line 0.0 5,814.78 47,947.78

15. Unit Resene Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Gene:ated (51WH) 0.0 8.7i8,691.5 67,145,510 (noteibelow

17. Gross Electrical Energy Generated (NIWH)

0. 0_,

2,919,694 22,259,162

18. Net E!ectrical Energy Generated (SIWH) 0.0 2,766,874 21,086,397

19. Unit Senice Factor 0.0 79.7 76.9

20. Unit Availability Factor 0.0 79.7 76.9 0.0 75.2 67.1

21. Unit Capacity Factor (Using SIDC Net) 0.0 73.8 65.8

22. Unit Capacity Factor (Using DER Net) 0.0 1.7 6.7

23. Unit Forced Outage Rate

24. Shutdowns Schedulet' Over Next 6 Slonths (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 IN111A L CRITICA LITY INITIA L ELECTRICITY CONISIERCIAL OPERATION

))hO l)k F/77)

NOTE: Corrected for cumulative error

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-271 UNIT Vermont Yankee DATE 791113 R. M. Sjogren COMPLETED BY (617) 366-9011 TELEPHONE X2281 October 1979 MONTII DAY AVERAGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL (MWe-Net)

(51We-Net) 1 0.0 g7 0.0 0.0 2

0.0 gg 0.0 3

0.0 39 0.0 4

0.0 20 0.0 5

0.0 2g 0.0 6

0.0 2,

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7 0.0 23 0.0 8

0.0 24 0.0 0.0 9

0.0 25 0.0 10 0.0 26 0.0 11 0.0 27 0.0 12 0.0 28 0.0 13 0.0 29 14 0.0 0.0 30 15 0.0 0.0 3;

16 0.0 INSTRUCTIONS On this format. list the average daily unit power lesel in MWe-Net for each day ia the reporting month. Compute to the nearest whole megawatt.

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DOCKET NO.

N sn_971 UNIT Vermont Yankee

]

DATE 791113

.m October, 1979 COMPLETED BY R. M. Sj'ogren TELEPHONE (617) 366-9011 Azzal SAFETY RELATED MAINTENANCE Page 1 of 4 NATUltli OF LiiR OR OUTAGE MALFUNCTION EQUIP?ti!NT MAINTENANCE NUMBER CAUSE ltLSU LT CORRECTIVE ACTION "B" Emergency Diesel Corrective NA Vibration Broken Studs on Replaced Studs Generator MR79-084 Vertical Drive Cover Refuel Platform Track Corrective LER Uneven Operating Erroneous Operation Replaced with Different Switches for " Platform MR79-280 79-10/3L Surface Style Actuating Arm Over Core" See Note #1 "B" Emergency Diesel Corrective NA Normal Operation Low Governor Oil Added Oil Generator MR79-516 Level IRM - D Corrective NA Failed Detector Erratic Operation Replaced Detector MR79-601 IRM - B Corrective NA Failed Detector Erratic Operation Replaced Detector MR79-602 IRM - A Corrective NA Defective Penetra-Inoperable Replaced Plug MR79-617 tion Plug "B" Emergency Diesel Corrective NA Vibration Cooling Water Line Replaced Gasket MR79-647 Leak Recirc Suction Valve Corrective NA Normal Wear Leakage Repacked Valve V2 - 43B MR79-665

VERMONT YANKEE Mru2 ' ;' " U ' ' " ' ' ' " " " ' '

Page 2 of 4 NATURE OF LER OR UUTAGE MALFUNCTION EQUIP:1ENT 11AINTENANCE NUlBER CAUSE RESU LT CORRECTIVE ACTION "B" Emergency Diesel Corrective NA Vibration Flexible Fuel Line Replaced Line Generator MR79-726 Leakage Piping Support, RIIR H-16 Corrective LER Improper Installa-Inadequate Support Added Additional Anchorage MR79-727 79-23/3L tion Torus Level Transmitter Ccrrective LER Transmitter Bumped Erratic Operation Tightened Fittings LT-16-19-38A/B MR79-729 79-24/3L llPCI Steam Line Support Corrective LER Piping Movement Anchor Belt Pull Out Redesigned and Repaired as MS-II-A10 MR79-750 79-15/3L Necessary See Note #2 Containment Air Monitor Corrective NA Dirt Seat Leakage Disassembled and Cleaned Isolation Valve V-76B MR79-751 Valve O

Shock Suppressors MS-15, Corrective LER Possibly Brittle

?luid Leakage, Rebuilt as Necessary RR-3, RR-13, RR-19, RR-34 MR79-758 79-26/3L "0"

Rings inubber RR-13 Con-

[

iidered Inoperable O

Shock Suppressors IIPCI Corrective NA Vibration

.cose Clamps and Tightened Same ao H-102-B, llPCI Il-103-A MR79-759 lolting "B" Emergency Diesel

orrective NA Burned Wiring Loss of Status LightoReplaced Wiring Generator MR79-769 for Auto Regulator Water Level Transmitter Corrective NA Leaking Fitting Crratic Operation Replaced "0" Rings LT-6-52A MR79-772 Atmosphere Control Valve

'o r rec t ive LER

)ir t seat Leakage Disassembled and Cleaned V-16-20-20 MR79-773 79-28/3L Valve Forthcoming "B" Emergency Diesel

orrective NA ihut Down Relay Out Inability to Shut Adjusted Relay Generator MR79-793

>f Adjustment down from Control Room 9

VERMONT YANKEE Par'A1 "W'"

' " " ' " ' ~ ~ '

Page 3 of 4 NATURE OF LER OR OUTAGE MALFUNCTION EQUIP:1ENT MAINTENANCE NU'1BER CAUSE ItESU LT CORRECTIVE ACTION "B" Emergency Diesel Corrective NA Faulty Relief Relief Lifts too Replaced Valve Generator Air Compressor MR79-787 Valve Low Motor Operator for Recirc Corrective NA Manual Breaker Breaker Could Not Adjusted Breaker Actuator Valve V-2-54-A-MR79-803 Actuator Out of be Closed Locally Adjustment Weld D8 on Main Steam Corrective NA Weld Porosity Failed NDE Mechanically Removed Indications o

Line "D" MR79-818 CO 9

Control Rod Drive llCU Corrective NA Normal Wear Leakage Replaced Valves as Necessary Cartridge Valves MR79-821 Control Rod Drive IICU Corrective NA Blown Fuses Solenoids Decner-Replaced Fuses 10-11 Scram Solenoids MR79-822 gized RCIC Turbine Covernor Corrective NA Dirt and Corrosion Seat Leakage Disassembled and Cleaned Valve MR79-844 RWCU Valve V12-63 Corrective NA Normal Wear Seat Leakage Lapped Valve Seat and Plug, Repacked Valve MR79-851 RWCU Valvc V12-68 Corrective LER Normal Wear Seat Leakage Lapped Valve Seat, MR79-851 79-28/3L Replaced Plug Forthcoming Standby Liquid Control Preventive NA Loose Valve Parts Possible Flow X-rayed Selected Pipe and System MR79-852 Blockage Valves to Locate Parts.

Removed the larger of the MR79-867 two Parts. Performed system Flow Capability Test.

Performed Loose Parts Analysis on Re-maining Part.

Control Rod Drive HCU Corrective NA Normal Wear Packing Leak Repacked Valve 1

38-11 MR79-854 g4

VERMONT YANKEE M"' ' ' 8 " ' " ' * " " *-"" ~ '

Page 4 of 4 NATURE OF LER OR OUTAGE MALFUNCTION EQUIP? TENT FIAINTENANCE NU:!BER CAUSE RESULT CORRECTIVE ACTION m

N

~

Recirc Valve V2-65-B Corrective NA Normal Wear Packing Leakage Repacked Valve MR79-858 CD CO Recirc Valve V2-65-B Corrective NA Normal Wear Bonnet Leakage Repaired by Welding g

MR79-868 Tie Breaker for DT-2 on Corrective NA Normal Wear Inoperable Replaced Breaker Bus 8B MR79-879 Control Rod Drive HCU's Corrective NA Normal Wear Erratic Operation Disassembled and Cleaned Valves 02-19 & 30-23 122 Valves MR79-882 Drywell/ Torus Vacuum Corrective NA Normal '. lear Valve Bonnet Leak-Replaced Gasket Breaker V16-19-5B MR79-884 age Drywell/ Torus Vacuum Corrective NA Microswitch Out of Erratic Position Realigned Switch Breaker V16-19-5B MR79-886 Alignment Indication Control Rod Drive HCU Corrective NA Normal Wear Seat Leakage Rebuilt Valve 38-35 Scram Inlet Valve MR79-897 Notes:

1.

Work Completed 9/7/79.

2.

Maintenance Request generated in response to I & E inspection it 2m 79-12-02.

Dates < 'n Maintenance Request forms reflect actual dates ge ierated, not dates completed. Work was completed 8/5/70.

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DOCKET NO.

50-271 UNIT Vermont Yankee DATE 791113 COMPLETED BY R. M. Sjogren TELEPHONE (617) 366-9011 X2281 REPORT MONTH October, 1979 SU.'-DIARY OF OPERATING EXPERIENCES During the month of October, Vermont Yankee was undergoing refueling and maintenance operations.

I380 l21