ML20087E744

Monthly Operating Rept for Dec 1991 for Virgil C Summer Nuclear Station Unit 1

ML20087E744
Person / Time
Site:	Summer
Issue date:	12/31/1991
From:	Haltiwanger J, Skolds J SOUTH CAROLINA ELECTRIC & GAS CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9201220118
Download: ML20087E744 (5)

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January 13. 1992 Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555 Attention: Director, Office of Resource Management Gentlemen:

Subject:

VIRGIL C. SUMMER NUCLEAR STATION DOCKET NO. f4/395 OPERATING tICENSE NO NPF-12 DECEMBER MONTHLY OPERATING REPORT Enclosed is the December lW 1 Monthly Operating Report for the Virgil C.

Summer Nuclear Station Unit No. 1. This submittal is made in accordance with the requirements of Technical Specifications. Section 6.9.1.10. >

If there are any questions, please call me at your convenience.

Very truly yours, G

John L. Skolds JWH:RJB JLS: led .

Attachments c: 0. W. Dixon Jr. J. W. Flitter R. R. Mahan f. Yost R. J. White INPC Records Center S. D. Ebneter ANI l.ibrary G. F. Wunder Marsh & McLennan General Managers NSRC G. G. Soult RTS (MON 2000)

NRC Resident-inspector File (818.03-1)

J. B. knotts Jr.

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NUCl[ Ak i XC[ll.ENCE - A SUtNER 1RADIl10N!

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l Director. Office of Resource Management  !

. December Monthly Operating Report i Page 1-  ;

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ATTACHMENT I .

AVERAGE DAILY UNIT POWER LEVEL  !

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DOCKET NO. 50/39'<

UNii V. C. SUMMER I 1/ 3/92 DATE COMPLC1ED~BY J.-W. hat 11WANGER TELEPHONE (803) 345-4297  ;

DECEMBER 1991 DAf AVERAGE dally PUWER LEVEL DAY AVERAGE DAILY POWER LEVEL I

' (MWe.Het) (MWe-Net)

1. 894 17. 893 I

2. 894 18. 894 3.- 893 19. 895 4 833- 20. 893

.5. 893 21. 895 *

6. 89) 22. - 895

7. 895 23. 895 i

8. 894 24. .896

9. 894 - 25, 896

.10.  ; 893 26. 895 11, 892 27. 509 '

12, 894 28. -36'

13. - 893 29. 148 -

14.  : 894 30.- 767  ?

15. 895 31. 888

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Director, Office of Resource Management Cecember Monthly Operating Report Page 2 ATTACHMENT 11 OPERATING DATA' REPORT ,

00CKEl NO. 50/395 UNIT- V. C. SUMMER l-DA!! 01/03/92 +

COMPLEld) PY J. W. HALT!WANGER TELER:3NE (803) 345-4297 OPERATING STATUS i

1._ Reporting Period: December 1991 Gross-Hours in Reporting' Period: 744

2. C4rrently Authorized Power Level (MWt): 2775' Max. Depend. Capacity (MWe-Net): 885 Design Electrical Rating (MWe-Net):' '900

3. Power Level to.Which Restricted (If Any)(MWe. Net): N/A 4 Reasons for' Rest 1ctions: N/A THIS MONTH 'YR TO DATE CUMULATIVE 1

5. Number of Hours Reactor Critical 744.0- 7265.5 54624.6

-6. P,eactor Reserve Shutdown Hourt 0.0 0.0 0.0 7.: Hours Generator on Line- 701.2 7065.7 53487.7

8. Unit Reserve Shutdown f:ours 0.0 0.0 0.0

-9. Gross Thenna' Inergy Generated (MWH) 0106910-16897287 138558767

- 10. Gross Electr'ical Energy (MWH) 640480 5628540 45885399 ll.. Net Electrical Energy Generated (MWH) 61.2549 15340451 43547282

12. Reactor Service factor 100.0 82.9 77.9

13. Reactor Availability ~ ne 100.0 82.9 77.9.

14. Unit ~ Service Factor 94.2 80.7 76.3

15. Unit Availability fac'u- 94.2 80.7_ -76.3

"- 16. Unit Capacity factor (Using MDC) 93.0; 68.9 70.2

17. Unit Capacity. Factor (Design MWe) 91.5 67.7 69.0

18. Unit Forced Outage Rate 0.0 0.7 '6.8

~ 19.. Shutdowns Scheduled Over Next 6 Months (Type, Date'& Duration of Each): a NONE-20.,!f Shut Down at End of Report Period. Estimated Date of Startup: ',

N/A

21. Units in Yest States (Priar to Commercial Operation): N/A.

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Oirector Office of Resource Management

-December Monthly Operating Report Page;3 '

AlTACHMENT 111:

UNIT SHU100WNS AND POWER RE00CT10NS -

DOCKET N0. 50/395 UNIT. V. C. SUMMTR I DAT E- 01/03/92 COMPLETED BY J. W. HALT!WANGER.

TELEPHONE (803) 345 4297-DECEMBER -1991 NO. DATE TYPE .0URATION REASON METHOD CORRECTIVE ACTION / COMMENTS

~

7 911227 5 42.8 1 REPAIRED GENERATOR HYDROGEN COOLER

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Director,OfficeofResourceManagement ..

December Monthly 0pera_ ting Report Page 4 ATIACHMENT IV +

NARRAllVE

SUMMARY

Of OPERAllNG EXPERIENCE DOCKET NO. 50/395 ;

UNil V. C. SUMMER I

(- AT E 01/03/9? i COMPLETEh BY J. W. HALTlWANGER TELEPh0NE (803) 345-4297 DECEMBER 1991

-Virgil C. Sumner Nuclear Station operated at approximately 100% power for the-first 26 days of-December.

On December 27, 1991, power was_ reduced and the generator was taken off-line 1

'at'1634 hours0.0189 days <br />0.454 hours <br />0.0027 weeks <br />6.21737e-4 months <br /> to_ repair' leaks in the main generator hydrogen coolers. The reactor remained critical-at low power.

On December 29. 1991, at 1124 hours0.013 days <br />0.312 hours <br />0.00186 weeks <br />4.27682e-4 months <br />, the generator breaker was closed. Power was held _ at approximately 30 percent _ for five_ hours to-allow for chemistry cleanup; power was then increased at three percent per hour. _

The plant was. operating at_100 percent power at the end of December, ,

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