ML20115G466

Monthly Operating Rept for Feb 1985

ML20115G466
Person / Time
Site:	Summer
Issue date:	02/28/1985
From:	Dixon O, Loignon G SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Barry L NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
NUDOCS 8504220209
Download: ML20115G466 (5)

Text

s Director, Office of Resource Management February Monthly Operating Report March 12, 1985 ATTACHMENT I AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 03/12/85 COMPLETED BY G. A. Loignon TELEPHONE (803) 345-5209 MONTH FEBRUARY 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 896 17. -33

2. 896 18. 86

3. 899 19. 660

4. 898 20. 894

5. 898 21. 894

6. 898 22. 892

7. 899 23. 894

8. 900 24. 896

9. 901 25. 80'

10. 900 26. 898

11. 902 27, 220

12. 900 28. -34

13. 900 29. N/A 14, 899 30. N/A

15. 901 31. N/A

16. 527 gjo4220209850228 R ADOCK 05000395 PDR f Y

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Director, Office of Resource Management February 2nthly Operating Report '

Page 2 March 12, 1985 ATDCHMENT II OPERATING DATA REPORT DOCKET NO. 50/395 UNIT V. C. SUl4ER I DATE 03/12/85 00btPIETED BY G. A. Inignon TELEPHONE (803) 345-5209 OPERATING STA'IUS

1. Reporting Period: FEBRUARY 1985 Gross Hours in Reporting Period: 672

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

'IHIS M0tflH YR 'IO DATE CLMJIATIVE

5. Ntaber of Hours Reactor M s Critical 591.1 1,280.6 6,834.0

6. Reactor Reserve Shutdom Hours 0 0 0

7. Hours Generator on Line 584.9 1,240.9 6,606.6

8. Unit Reserve Shutdom Hours 0 0 0

9. Gross 'Ibermal Ehergy Generated (MWH) 1,578,286 3,093,91_5, 16,426,505

10. Gross Electrical Energy Generated (MMI) 532,590 1,032,950 5,465,099

11. Net Electrical Ehergy Generated (MWH) 508,215 981,625 5,173,721

12. Reactor Service Factor 88.0 90.4 67.0

13. Reactor Availability Factor 88.0 90.4 67.0

14. Unit Service Factor 87.0 87.6 64.8

15. Unit Availability Factor 87.0 87.6 64.8

16. Unit Capacity Factor (Using MDC) 85.5 78.3 57.3

17. Unit Capacity Factor (Using Design MWe) 84.0 77.0 56.4

18. Unit Forced Outage Rate 13.0 12.4 11.1

19. Shutdoms Scheduled Over Next 6 2nths (Type, Date, and Duration of Ehch):

N/A

20. If Shut Dom at End of Report Period, Ehtimated Date of Startup: 03/01/85

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

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

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6 Director, Office of Resource Management F;bruary Monthly Operating Report Page 3

-March 12, 1985 ATTACHMENT III UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 03/12/85 COMPLETED BY G. A. Loignon TELEPHONE (803) 345-5209 (1) METHOD OF (2)

TYPE SHUTTING DOWN F: FORCED DURATION THE REACTOR OR CORRECTIVE ACTIONS /

NO. DATE S: SCHEDULED (HOURS) REASON REDUCING POWER COMMENTS 3 850216 F 46.2 A 2 3) Repair Rod Control 4 850227 F 40.9 A 2 4) Repair Rod Control, Test Bypass Reactor Trip Breaker

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Director, Office of Resource Management February Monthly Operating Report Page 4 March 12, 1985 ATTACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE The Virgil C. Summer Nuclear Station, Unit No. 1, was operating at 100% power at the beginning of February 1985.

On February 16,1985 at 0900 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.4245e-4 months <br />, an urgent f ailure alarm was received on the rod control system. The Plant was at 100% power when the rod control f ailure occurred. A controlled reactor / turbine shutdown via boration was subsequently initiated.

The turbine generator was taken off-line at 1448 hours0.0168 days <br />0.402 hours <br />0.00239 weeks <br />5.50964e-4 months <br />. The reactor was then manually tripped from approximately 3% power. A defective electronic card was identified and replaced prior to placing the generator on-line at 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br /> on February 18, 1985.

The outage was 46.2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> in duration.

On February 27, 1985 with the Plant at 100% power, a rod control system failure occurred which necessitated a controlled reactor / turbine generator shutdown at approximately 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br />.

.The reactor was manually tripped f rom 10% power at 0705 hours0.00816 days <br />0.196 hours <br />0.00117 weeks <br />2.682525e-4 months <br />. The rod control system failure was determined to be a defective circuit board which was replaced prior to taking the reactor critical at 0605 hours0.007 days <br />0.168 hours <br />0.001 weeks <br />2.302025e-4 months <br /> on February 28, 1985. The reactor startup was terminated at 0845 hours0.00978 days <br />0.235 hours <br />0.0014 weeks <br />3.215225e-4 months <br /> to allow surveillance testing of the reactor trip bypass breaker. At 1330 hours0.0154 days <br />0.369 hours <br />0.0022 weeks <br />5.06065e-4 months <br /> on the same day, a power range positive rate trip occurred as the reactor was being taken critical.

On February 28, 1985, the Plant was preparing to start-up from the forced outage.

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'* SOUTH CAROLINA ELECTRIC & GAS COMPANY POST OFFICE 764 COLuualA. South CAROUNA 29218 g,

Q,,y,0;,=oaJa March 12, 1985 NuCLaan OpenarioNS Director, Of fice 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 February Monthly Operating Report

Dear Mr. Barry:

-Enclosed is the February 1985 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 yours, f

O. W. Dix n, .

CJM: GAL:OWD/ led Attachnent cc V. C. Summer C. L. Ligon (NSRC)

T. C. Nichols, Jr./O. W. Dixon, Jr. K. E. Nodland E. H. Crews, Jr. R. A. Stough E. C. Roberts G. Percival W. A. Williams, Jr. C. W. Hehl 4 H. R. Denton J. B. Knotts, Jr.

J. Nelson Grace INPO Records Center -

Group Managers ANI Library D. A. Nauman. L. N. Carter O. S. Bradham C. S. Gramling C. A. Price NPCF FILE

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