ML20079M630

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Monthly Operating Rept for Dec 1983
ML20079M630
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 12/31/1983
From: Loignon G
SOUTH CAROLINA ELECTRIC & GAS CO.
To:
Shared Package
ML20079M626 List:
References
NUDOCS 8401270379
Download: ML20079M630 (7)
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Director, Office of Resource Management December Monthly Operating Report Page 2 January 13, 1984 ATTACHMENT-I-AVERAGE DAILY UNIT POL'ER LEVEL DOCKET NO. 50/395~

UNIT V. C. SUMMER I DATE 01/13/64 COMPLETED BY G. A. Loignon TELEPHONE (803) 345-5209 MONTH DECEMBER 1983 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 0 17 0
2. 0 18. 0 3 0 19 19
4. 0 20. 621 __

5 0 21. 810

6. 0 22. 881 ,
7. - 0 23 879
8. 0 24. 872 9 0 25 878
10. 0 26. 886
11. 0 27. 888
12. 0 28. 880 13 0 29 893
14. - 0 30. 887
15. 20 31. 891
16. 17 8401270379 840113 PDR ADOCK 05000395 R PDR -

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Director, Office of Resource Management December Monthly Operating Report Page 3 January 13, 1984 ATfACHMENT II OPERATING DATA REPORT DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 01/13/84 COMPLEfED BY G. A. Loignon TELEPHONE (803) 345-5209 OPERATING STATUS

1. Reporting Period: DECD4BER 1983 Gross Hours in Reporting Period: 744

-2. Currently Authorized Power Level (MWt): 2775

~ Max. Depend. Capscity (MWe-Net): N/A Design Electrical Rating (MWe-Net): 900

3. Pcver Level to which restricted (If Any)(MWe-Net): N/A
4. Reasons for Restrictions (If Any): N/A THIS 10 NTH YR TO DATE CUMULATIVE
5. Number of Hours Reactor.Was Critical- 347 2 6431.2 7738.0
6. Peactor Reserve Shutdown Hours 0 0 0

_ 7. Hours Generator on Line 310.5 6238.2 6999 5

8. Unit Reserve Shutdown Hours 0 0 0
9. Gross Thermal Energy Generated (MWH) 800,616 13,825,443 14,621,316
10. Gross Electrical Energy Generated (MWH) 260,640 4,553,232 4,769,449
11. Net Electrical Energy Generated (MWH) 247,802 4,327,292 4.518,468
12. Reactor Service Factor N/A N/A N/A
13. Reactor Availability Factor N/A N/A N/A
14. Unit Service Factor N/A N/A N/A
15. Unit Availability Factor N/A N/A N/A
16. Unit Capacity Factor (Using MDC) N/A N/A N/A
17. Unit ~ Capacity Factor (Using Design MWe) N/A N/A N/A
18. Unit Forced Outage Rate N/A N/A N/A
19. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

Spring Maintenance Outage Planned'for April'1984.

20. If Shut Down at End of Report Period, Estimated Date of Startup: N/A
21. Units in Test Status (Prior to Comnerical Operation):

FORECAST ACHIEVED Initial Criticality 10-20-82 10-22-82 Initial Electricity 11-17-62 11-16-62 Connercial Operation 01-01-84 01-01-84 i

Director, Office of Resource Management D3cember Monthly Operating Report Page 4 January 13, 1984 ATTACHMENT III UNIT SHUTDOWNS AND POWER REDUCTIONS 1%

DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 01/13/84 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 20 831123 3 333.3 B 2 20) Steam Generator Eddy Current Outage.

21 831215 F 6.7 A 3 21) Turbine Trip on Hi-Hi Level Heater 5A.

22 831215 F 9.2 A 3 22) Turbine Trip on Hi-Hi Level Heater 5A.

23 831216 F 84.3 A 3' 23) Turbine Trip on Thrust Bearing Wear Detector.

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Director, Office of Resource Management December Monthly Operating Report Page 5 January 13, 1984' ATTACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE Virgil C. Summer Nuclear Station, Unit No. 1, remained shut down until December 14, 1983, for completion of a Steam Generator Tube Eddy Current examination. The results were satisfactory with no tubes being plugged.

At 0009 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> and again at 0832 hours0.00963 days <br />0.231 hours <br />0.00138 weeks <br />3.16576e-4 months <br /> on December 15, 1983, the turbine tripped due to Hi-Hi level indication on feedwater heater SA. The problem was traced to the level instrumentation giving false readings.

On December 16, 1983, at 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br />, the turbine tripped from thrust bearing wear detection. The trip setpoint had previously been set for turbine power operating conditions, which was not a proper setpoint.for the turbine at restart conditions. This condition resulted in the turbine trip during

-restart operations. Subsequently, the trip setpoint was properly established and set. Following this trip, the plant was cooled down for valve repacking in the primary system.

On December 31, 1983, the plant was operating at 100% power.

Director, Office of Resource Management December Monthly Operating Report Page 6 January 13, 1984 EXPLANATION OF REVISIONS TO 1983 MONTHLY OPERATING REPORTS The following pages of this report are submitted as revisions to the original reports of April 1983 through December 1983 These revisions are described below:

APRIL MONTHLY OPERATING REPORT ATTACHMENT II -- Item 1 was changed from 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> to 719 hours0.00832 days <br />0.2 hours <br />0.00119 weeks <br />2.735795e-4 months <br /> to accommodate the adjustment due to Daylight Savings Time.

ATTACHMENT III -- For Outage No. 7, the duration was changed from 1055.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> to 720.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> to reflect only the amount of hours of outage duration that pertained to the month of April (1055.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> reflected a cumulative outage duration which included hours obtained in March).

MAY MONTHLY OPERATING REPORT ATTACHMENT III -- For Outage No. 7, the duration was changed from 1515.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> to 535.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> to reflect only the amount of hours of outage duration that pertained to May (1515.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> erroneously reflected a cumulative outage duration which included hours obtained in March and April: The correct total outage value should have been 1590.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />).

Plant Outage No. 8 was deleted as this entry was a reactor trip only. The generator was not on line; therefore, this entry did not qualify as a plant outage.

Plant Outage No. 9 was changed to No. 8 to accommodate the outage deletion mentioned above. Also, the outage duration from 10.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> to 29.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> was changed due to a personnel error made during computation (10.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> pertained to the reactor outage while 29.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> is the correct number _ pertaining to the generator outage).

Plant Outage No. 10 was deleted as this entry was a reactor trip only. The generator was not on line; therefore, this entry did not qualify as a plant outage.

Director, Office of Resource Management December Monthly Operating Report Page 7-January- 13, 1984 EXPLANATION OF REVISIONS TO'1983 MONTHLY OPERATING' REPORTS --

Continued MAY MONTHLY OPERATING REPORT -- Continued ATTACHMENT IV -- A sentence was added to the end of paragraphs 3 and 5 to clarify why the incidences were not listed on Attachment III as plant outages.

JUNE MONTHLY OPERATING REPORT ATTACHMENT III --' Plant Optage No. ll-was changed to No. 9 to reflect the two (2) outage deletions made in the May-Monthly Operating Report as previously mentioned. Also,.the outage duration of 22.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> was changed to 27.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> to reflect generator outage hours instead of reactor outage hours.

JULY MONTHLY OPERATING REPORT ATTACHMENT III -- Plant Outage No. 12.was changed to No. 10 to reflect the two (2)~ outage deletions made in the May Monthly Operating Report as previously mentioned. Also, the outage duration was changed from 35.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> to 39.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> to reflect generator outage hours instead of reactor outage hours.

AUGUST MONTHLY OPERATING REPORT ATTACHMENT III -- The plant outage numbers were changed to reflect the two (2) outage deletions as previously mentioned.

SEPTEMBER MONTHLY OPERATING REPORT ATTACHMENT III -- The plant outage numbers were changed to reflect the two (2) outage deletions as mentioned previously.

Director, Office of Resource Management December Monthly Operating Report Page 8 January 13, 198h-EXPLANATION OF REVISIONS TO 1983 MONTHLY OPERATING REPORTS --

Continued OCTOBER MONTHLY OPERATING REPORT ATTACHMENT III -- The plant outage numbers were changed to reflect the two (2) outage deletions as mentioned previously.

Also, for Outage No. 18 the duration was changed from 26.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> to 26.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> due to miscalculation.

NOVEMBER MONTHLY OPERATING REPORT ATTACHMENT III -- The plant outage numbers were changed to reflect the two (2) outage deletions as mentioned previously.

Outage No. 20 was changed from 168.2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> to 168.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> due to a calculational error.

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