ML20087M659

Monthly Operating Rept for Feb 1984

ML20087M659
Person / Time
Site:	Summer
Issue date:	02/29/1984
From:	Dixon O, Loignon G SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Barry L NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
NUDOCS 8403300145
Download: ML20087M659 (5)

Text

_ _ - ._ __

e Director, Office of Resource Management February Monthly Operating Report Page 2 March 14, 1984 ATTACHMENT I AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 03/14/63 COMPLETED BY G. A. Loignon TELEPHONE (603) 345-5209

~

MONTH FEBRUARY 1984 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 894 17 891

2. 892 18. 891 3 887 19 889

4. 892 20. 088 5 891 21. 887

6. 891 22. 888 7 493 23. 888 4

8. 0 24. 888 9 O ~25 888

10. -0 26. '894-

, 11. 327 27 ~893

!~ 12. 856 28. 892 13 895 29. 892

14. '893 30. ~n/a 15 893 31. n/a '

16. . -890 i

~8403300145 840229 ADOCK 0 L-C

- = .h,

- _ . - - . - . = -

t' Director, Office of Resource Management February Monthly Operating Report Page 3 March 14, 1984 ATTACHMENE II OPERATING DATA FEPORP DOCKEP NO. 50/395 UNIT V. C. SUMER I DATE 03/14/64 COMPIEIED BY G. A. Loignon TEIEPHONE (603) 345-5209 OPERATING STATUS

1. Reporting Period: FEBRUARY 1984 -Gross Hours in Reporting Period: 696

2. Currently Authorized Power Level (M4t): 2775 Max. Depend. Capacity (MWe-Net): 665 Design Electrical Rating (Mde-Net): 900

3. Power Level to which restricted (If Any)(Mde-Net): N/A

4. Reasons for Restrictions (If Any): N/A THIS MONIH YR 70 DATE CUMULATIVE

5. Number of Hours Reactor Was Critical 641.8 1376.8 9114.8

6. Reactor Reserve Shutdown Hours 0 0 0

7. Hours Generator on Line 611.4 1344.6 6343 7

8. Unit Reserve Shutdown Hours 0 0 0

9. Gross Thermal Energy Generated (MdH) 1,666,309 3,663,244 16,264,560

10. Gross Electrical Energy Generated (MWH) 554,195 1,222,545 5,991,994

11. Net Electrical Energy Generated (MdH) 531,912 1,173,600 5,692,266

12. Reactor Service Factor 92.2 95.6 95.6

13. Reactor Availability Factor 92.2 95.6 95.6

14. Unit Service Factor 67.6 93.4 93.4

15. Unit Availability Factor 67.6 93.4 93.4

16. Unit Capacity Factor (Using MDC) 86.4 92.1 92.1

17. Unit Capacity Factor (Using Design K4e) 64 9 90.6 90.6

18. Unit Forced Outage Rate 12.2 6.7 6.7

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

Spring Maintenance Outage, March 22, 1984, 29 Days.

20. If Shut Down at End of Report Period, Estimated Date of Startup: N/A

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

FORECASP ACHIEVED Initial Criticality 10-20-82 10-22-82 Initial Electricity 11-17-62 11-16-62 Comercial Operation 01-01-64 01-01-64 i

%n*

(*

Director, Office of Resource Management February Monthly Operating Report PCge 4 March 14, 1984 ATTACHMENT III UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 03/14/83 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 2 840207 F 25.4 A 3 2) Reactor trip from "B" Steam Generator Lo-Lo Level.

3 840208 F 59.2 A 1 3) Tripped Turbine because feedwater temperature decreased to below 225 F closing feedwater isolation valves.

.. s V

Director, Office of Resource Management February Monthly Operating Report Page 5 March 14, 1984 ATTACHMENT IV NARRATIVE

SUMMARY

OF 0.'ERATING EHPERIENCE The Virgil C. Summer Nuclear Station, Unit No. 1, continued full power operation during the month of February 1984.

On February 7, 1984, at 1341 hours0.0155 days <br />0.373 hours <br />0.00222 weeks <br />5.102505e-4 months <br />, a feedwater flow control electronic card failed and caused reduced feedwater flow to Steam Generator "B". This condition resulted in a reactor trip on low-low steam generator water level.

On February 8, 1984, at 1553 hours0.018 days <br />0.431 hours <br />0.00257 weeks <br />5.909165e-4 months <br />, power was ramped down to repair main feedwater regulating valve "B". The generator breaker was opened at 1636 hours0.0189 days <br />0.454 hours <br />0.00271 weeks <br />6.22498e-4 months <br /> on the same date.

On February 8, 1984, at 2227 hours0.0258 days <br />0.619 hours <br />0.00368 weeks <br />8.473735e-4 months <br />, the reactor tripped on low-low water level in Steam Generator "C" during a reactor startup.

Feedwater temperature dropped below 225 F and resulted in feedwater isolation as designed. This caused the steam generator low-low level condition.

On February 9,1984, at 1255 hours0.0145 days <br />0.349 hours <br />0.00208 weeks <br />4.775275e-4 months <br />, the main generator was excited to synchronize speed for turbine electrohydraulic speed controller adjustments. During the synchronization, generator frequency was at 58 Hz. Underfrequency relays activated and tripped the plant incoming power transformer OCe which de-energized the balance of plant busses as designed. Power was lost to the reactor coolant pumps and the control rod drive motor generator sets. When the shutdown and control rods began dropping into the core, a manual reactor trip was initiated. Natural circulation was effectively established. At 1319 hours0.0153 days <br />0.366 hours <br />0.00218 weeks <br />5.018795e-4 months <br />, February 9, 1984, the reactor coolant pumps were restarted, and the plant was stabilized in Mode 3.

On February 10, 1984, at 0510 hours0.0059 days <br />0.142 hours <br />8.43254e-4 weeks <br />1.94055e-4 months <br />, the main turbine tripped on low oil pressure which caused a reactor trip. Following the trip, the Main Steam Isolation valves (MSIV) were closed to limit the primary system cooldown. Subsequently while re-establishing a steam flow path, the operator inadvertently opened the MSIV instead of the MSIV bypass which resulted in a safety injection on high steamline delta pressure. The safety injection was terminated, and the plant was returned to normal condition.

On February 29, 1984, the plant was operating at approximately 100%

power.

i

?s

e 5 V

SOUTH CAROLINA ELECTRIC & GAS COMPANY

,osT oprics 7s4 COLUMetA. south CAROLINA 29218 O.W.OtMON.JR.

- ViCE PREsmENT wucts. o ... nous March 14, 1984 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 February Monthly Operating Report

Dear Mr. Barry:

Please find enclosed the February 1984 Monthly Operating Report for the Virgil C. Summer Nuclear Station Unit No. 1 as required by Technical Specification 6.9.1.10.

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

Very.trul yours, a

O. W. Dixon, HCF: GAL:OWD/gj Attachment 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 H. R. Denton J. B. Knotts, Jr.

J..P. O'Reilly INPO Records Center-Group Managers .NPCF-D. A. Nauman File O. S. Bradham C. A. Price l ip - 3