ML20082R935

Monthly Operating Rept for Aug 1991 for VC Summer Nuclear Station Unit 1

ML20082R935
Person / Time
Site:	Summer
Issue date:	08/31/1991
From:	Haltiwanger J, Skolds J SOUTH CAROLINA ELECTRIC & GAS CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9109160308
Download: ML20082R935 (5)

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SEP 12 591 Document Control Desk U. S. Nuclear Regulatory Commission Washington, OC 20555

-Attention: Director, Office of Resource Management Gentlemen:

Subject:

VIRGIL C. SUMMER NUCLEAR STATION DOCKET N0. 50/39d l-OPERATING LICENSE N0. NPF-12 AUGUST MONTHLY OPERATING REPORT Enclosed is the August 1991 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 John L. Skolds DCH:JWH:JLS: led Attachments c:

0. W. Dixon Jr.

J. W. Flitter R. R. Mahan F. Yost R. J. White INPO Records Center S' D. Ebneter ANI Library 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.

l-l 9109160308 910831 A

{DR ADOCK0500gj5 1 Ui V U HUCLEAR EXCELLENCE - A SUMMER TRADiIION!

Director, Office of Resource Management August Monthly Operating Report Page 1 ATTACHMENT I AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50/395 UNIT V. C. SUMMER I DATE 09/03/91 COMPLETED BY J. W. HALTlWANCER TELEPHONE (803) 345-4297 AUGUST 1991 DAY AVERAGE DAILY PCWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1.

880 17, 881 2.

879 18.

879 3.

880 19.

879 4.

880 20.

880 5.

878 21.

879 6.

879 22.

879 7.

880 23.

878 S.

880 24.

879 9.

877 25.

880 10, 87E 26, 880 11.

694 27.

879 3

12.

852 28.

880 13.

879 29.

879 s

14.

881 30.

879 15.

881 31, 879 16.

881

+

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Director, Office of Resource Management August Monthly ~0perating Report i

Page 2 j

ATTACHMENT II OPERATING DATA REPORT 1

DOCKET NO.

50/395 UNIT V. C. SUMMER I DATE 09/03/91 COMPLETED BY J. W. HALTIWANGER TELEPHONE (803) 345-4297 OPERATING STATUS-1.! Reporting Period:

August 1991 Gross Hours in Reporting Period:

744

2. Currently Authorized Power Level (MWt):

2775

. Max. Depend. Capacity (MWe-Net):

885 Design Electriedl Rating (MWe-Net):

900 3.-Power Level-to Which Restricted (If Any)(MWe-Net): N/A

.4. Reasons for Restrictions:

N/A THIS MONTH YR T0-DATE CUMULATIVE

5. Number of Hours Reactor Critical 744.0 5664.9 53024.0

6. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

.7. Hours Generator on Line 744.0 5636.0 52058.0

8. Unit Reserve Shutdown Hours 0.0 0.0 0.0

9. Gross Thermal Energy Generated (MWH) 2027464 13302343 134973823

10. Gross Electrical Energy (MWH) 676760 4424890 44681749

11. Net Electrical Energy Generated (MWH) 649111 4212405 42419236

12. Reactor Service Factor 100.0 97.2 78.9

13. Reactor Availability. Factor 100.0 97.2 78.9

14. Unit. Service Factor 100.0

-96.7 77.5

15. Unit Availability Factor 100.0 96.7 77.5

16. Unit Capacity Factor (Using MDC) 98.6 81.6 71.3

17. Unit Capacity Factor (Design MWe) 96.9 80.3 70.1

.18. Unit Forced Outage Rate 0.0 0.0 6.9 119. Shutdowns Scheduled Over Next 6 Months (Type, Date-& Duration of Each):

REFUELING, 9/20/91, 60 DAYS

.20. If Shut Down at End of Report Period. Estimated Date of Startup:

N/A 0

21. Units in Test Status (Prior to Commercial Operation):

N/A

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. 4 Director, Office of Resource Management August Monthly Operating Report Page 3 ATTACHMENT 111 UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.-

50/395 UNIT V. C. SUMMER I DATE 09/03/91 COMPLETED BY J. W. HALTlWANGER TELEPHONE (803)345-4297 AUGUST 1991 NO. DATE TYPE DURATION-REASON METHOD CORRECTIVE ACTION / COMMENTS 3 910811 S-0.0-B 5

POWEP REDUCTION FOR MAINTENANCE 1.0 REASON '

L A: Equipment Failure

- B: Maintenance or Test C: Refueling D: Regulatory Restriction

- E: Operator Training and License Examination F: Administrative -

G: Operational Error H: Other (Explain) 2.0 METHOD 1: Manual 2: Manual Scram 3: Automatic Scram 4: Continuation (Useinitial Date) 5: Pov er Reduction (Duration 0.0)

9. Other (Explain)

-t t

7

Director, Office of Resource Management August Monthly Operating Report Page 4 ATTACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE DOCKET NO.

50/395 UNIT V. C. SUMMER I DATr 09/03/91 COMPLETED L J. W. HALTlWANGER TELEPHONE (803) 345-4297 AUGUST 1991 Virgil C. Sumner Nuclear Station (VCSNS) operated at cpproximately 99% power through August 10th.

On August 11 a power reduction was made to 75% power to clean the hydrogen cooler and stator water cooler for the main generator. Power was returned to 99% on August 12, and was maintained for the remainder of the month.

_-