ML20207C841

Monthly Operating Rept for Apr 1986

ML20207C841
Person / Time
Site:	Summer
Issue date:	04/30/1986
From:	Loignon G, Nauman D SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Barry L NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
NUDOCS 8607210443
Download: ML20207C841 (5)

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Director, Office of Resource Management April Monthly Operatino Report Page 1 May 15, 1986 ATTACHMENT I AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 05/15/86 COMPLETED BY G. A. LOIGNON

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TELEPHONE [803) 345-5209 i

MONTH APRIL 1986 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1.

897 17.

897 2.

425 18.

890 3.

231 19.

897 4.

786 20.

897 5.

889 21.

896 6.

891 22.

895 7.

893 23.

896 8.

890 24.

895 9.

893 25.

894 10.

894 26.

899 11.

895 27, 884 12.

895 28.

894 13.

897 29.

894 14.

899 30.

895 15.

896 16.

897 hD f ho$$K3 660A30

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l Director, Office of Resource Management April Monthly Operating Report Page 2 May 15, 1986 ATTACHMENT II OPERATING DATA REPORT DOCKET N0. 50/395 UNIT V. C. SUMMER I DATE 05/15/86 COMPLETED BY G. A. LOIGNON TELEPHONE (803) 345-5209 OPERATING STATUS 1.

Reporting Period:

April 1986 Gross Hours in Reporting Period:

719 2.

Currently 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 Restrictions (If Any):

N/A THIS MONTH YR TO DATE CUMULATIVE 5.

Number of Hours Reactor Was Critical 707.1 2.823.8 14.817.1 6.

Reactor Reserve Shutdcan Hours 0.0 0.0 0.0 7.

Hours Generator on Line 702.3 2.805.2 14.445.5 8.

Unit Reserve Shutdown Hours 0.0 0.0 0.0 9.

Gross Thermal Energy Generated (MWh) 1.898.100 7.636.908 37.474.474

10. Gross Electrical Energy Generated (MWh) 639.020 2.556.600 12.487.259

11. Het Electrical Energy Generated (MWh) 613.419 2.452.555 11.875.193

12. Reactor Service Factor 98.3 98.1 72.6

13. Reactor Availability Factor 98.3 98.1 72.6

14. Unit Service Factor 97.7 97.4 70.7

15. Unit Availability Factor 97.7 97.4 70.7

16. Unit Capacity Factor (Using MDC) 96.4 96.3 65.7

17. Unit Capacity Factor (Using Design MWe) 94.8 94.7 64.6

18. Unit Forced Outage Rate 2.3 2.6 7.3

19. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

NONE 20.

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

N/A

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

N/A FORECAST ACHIEVED Initial Criticality N/A 10-22-82 Initial Electricity N/A 11-16/82 Commercial Operation N/A 01-01-84 1

Y Director, Office of Resource Management April Monthly Operating Report Page 3 May 15, 1986 ATTACHMENT III UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.

50/395 UNIT V. C. SUMMER I DATE 05/15/86 COMPLETED BY G. A. LOIGNON TELEPHONE (803) 345-5209 Method of TYPE Shutting F or S Duration Down the Corrective Actions /

No.

Date Reason Forced or (Hours)

Reactor or Comments Scheduled Reducing Power 2

860402 F

16.7 A

3 Loss of excitation to Main Generator Alterex due to worn brushes.

Director, Office of Resource Management April Monthly Operating Report Page 4 l

May 15, 1986 ATTACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 05/15/86 COMPLETED BY G. A. LOIGNON TELEPHONE (803) 345-5209 On April 1,1986, the V. C. Summer Nuclear Station, Unit 1, was operating at approximately 100 percent power.

On April 2, 1986, at 1155 hours0.0134 days <br />0.321 hours <br />0.00191 weeks <br />4.394775e-4 months <br />, the plant tripped from 100 percent power.

Worn Alterex brushes caused loss of excitation to the generator resulting in turbine and reactor trip. Plant was back on line at 0434 hours0.00502 days <br />0.121 hours <br />7.175926e-4 weeks <br />1.65137e-4 months <br /> on April 3,

1986, On April 30, 1986, the plant was operating at approximately 100 percent power.

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May 15, 1986 Director, Office of Resource Management U. S. Nuclear Regulatory Commission MNBB 7602 Washington, DC 20555 ATTN: Mr. Learned W. Barry

SUBJECT:

Virgil C. Summer Nuclear Station Docket No. 50/395 Operating License No. NPF-12 April Monthly Operating Report

Dear Mr. Barry:

Please find enclosed the April 1986 Monthly Operating Report for the Virgil C.

Summer Nuclear Station Unit No. 1.

This submittal is made in accordance with the requirements of Technical Specification 6.9.1.10.

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

Very truly-yotes, c'k Lh A. Nauman RMF: GAL: DAN /dwf Attachment pc:

0. W. Dixon, Jr./T. C. Nichols, Jr.

R. M. Campbell E. H. Crews, Jr.

K. E. Nodland E. C. Roberts R. A. Stough J. G. Connelly, Jr.

G. O. Percival W. A. Williams, Jr.

R. L. Prevatte H. R. Denton J. B. Knotts, Jr.

J. Nelson Grace S. D. Hogge Group Managers INP0 Records Cinter

0. S. Bradham ANI Library D. R. Moore L. N. Carter l

C. A. Price R. E. Rainear C. L. Ligon (NSRC)

NPCF R. M. Campbell File

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