ML20006F738

Monthly Operating Repts for Dec 1989 for Sequoyah Nuclear Plant Units 1 & 2

ML20006F738
Person / Time
Site:	Sequoyah
Issue date:	12/31/1989
From:	Sims R TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20006F730	List: ML20006F728 ML20006F736 ML20006F738
References
NUDOCS 9003010079
Download: ML20006F738 (10)

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ENCLOSURE'2-G w.

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TENNESSEE VALLEY: AUTHORITY.

NUCLEAR POWER GROUP.

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MONTHLY-OPERATING REPORT ~

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DECEMBER 1989 s, c y

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UNIT 1 v

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-DOCKET NUMBER 50-327 c, -

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-LICENSE NUMBER OPR-77:

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LICENSE NUMBER DPR-79

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OPERATIONAL

SUMMARY

DECEMBER 198.9 UNIT 1 i

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Unit l' generated 700,500 MWh (gross) of electrical power during December with i

7 a capacity factor of 79.59 percent'. A reduction in reactor power level was initiated on December 1, 1989, at 2100 (EST), for the performance of the ice

)

condenser! lower inlet door test and system walkdowns.

Reactor-power increase to 100 percent was delayed when problems occurred with HDT 3 Valves 6-106 A and B.

Unit l reached 100 percent power level again on December 7, 1989, On~ December 10, 1989, with Unit 1 in Mode 1 (100 percent power), a turbine i'

trip / reactor trip occurred at 1047 (EST). The trip resulted from a high-high-feedwater level of 75 percent in S/G 3.

The trip was preceded by a secondary L'

side transient, which resulted in a turbine runback to approximately 80 percent load.

r' Unit I was tied online on December 12, 1989, at 2257 (EST).

The unit again i,

reached 100 percent reactor power level on December 15, 1989, at 0600 (EST).

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On December 21, 1989, at 0842 (EST), the power level was decreased to approximately 80 percent for ten hours for CBP C maintenance and reached 100 percent; reactor power at 1805 (EST), that same day.

Unit 1 operated at 100 percent power.from December 21, 1989, at 1805 (EST),

until December 29, 1989, at 1706 (EST), when the power level was decreased to extend the life of the core with reduced load demands expected on the grid.

Unit I was' operating at approximately 75 percent reactor power at the end of December.

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OPERATIONAL

SUMMARY

DECEMBER 1989 UNIT 2 Unit 2 go;erated 818,580 MWh (gross) of electrical power during December with a capacity factor of 94 percent.

The unit continued to operate at 100 percent power 1evel until December 15, 1989, when at 1049 (EST), the shift operations supervisor. notified the unit operator to decrease the load'to,90 percent until the source of the problem with.HDT 3 level was determined.

Reactor power reached 100 percent.again on December 18, 1989, at 0335 (EST),-but was again i

reduced because of erratic flow on Heater 3 drain system.

On December 20, 1989, with the reactor power level at 55 percent,.the unit

. operator began easing up the load to help meet load demands on the grid.

L HDT 3 functioned normally, and 100 percent reactor power was reached on

[,

December 21, 1989, at 1634 (EST).

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.l Unit 2 continued to operate at 100 percent _ power level untti December 29,'1989, at 2232 (EST),:when the power level was decreased to extend the life of the t

core with reduced load demands expected on the grid. Unit 2 was operating at i

approximately 75 percent reactor power at the end of December.

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. POWER-OPERATED RELIEF VALVES (PORVs) AND SAFETY VALVES

SUMMARY

L There were no challenges.to PORVs or safety valves in the month of December.

E OffSITE DOSE CALCULATION MANUAL (ODCM) CUANGES

-There were no changes to the ODCM in the month of December.

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. AVERAGE DAILY. UNIT POWER LEVEL DOCKET NO.

50-327 s.

UNIT One DATE

_01-04 4 COMPLETED BY

'R G.iSims t.b l. /

' TELEPHONE (615)'843-6722 MONTH DLCEMBER1989 DAY ~

AVERAGE DAILY' POWER LEVEL' DAY AVERAGE-DAILY-P0HER LEVEL v

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(MWe-Net, 1

1143 17 1139

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-697 18 1130

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511-19 1143 4

615 20 1143 4

5-792 21 1099 6

'733 22 1141

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-1064 23 1144 8-1120 24 1144 9.

1145 25 1131 g

'10 516 26 1146' y

11 14 27 1146 h'

12-11-28 1147

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OPERATING DA1A RLPORT

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DOCKET NO. _50-327 DATE January 5. 1990 g

COMPLETED BY T. J. Hollomon TELEPHONE (615) 843-7528

- OPERATING STATUS

! Notes

. 1.

Unit Name:

Sequoyah Unit One

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2.

Reporting Period:

Deccaber 1989 3.

Licensed Thermal Power (tut): 3411.0

4. : Nameplate Rating (Gross.the)* 1220.6 5.

Design Electrical Rating (Net MWe): 1148.0 1

1

- 6.-

Maxima Dependable Capacity (Gross PWe): 1183.0 I

t 7.fMaximumDependable' Capacity (NetfWe): _1148.0 8.

If Changes occur in capacity Ratings (Items Hunber 3 Through 7) Since Last Report, Give Reasons:

N/A 1

.9.

Power Level To Which Restricted, if Any (Net PWe):

N/A

'l0. Reasons For Restrictions, if Any:

N/A b

This Month Yr-to-Date Cumulative

.11. Hours in Reporting Period 744 8.760 74.545

12. Nunber of. Hours Reactor Was Critical 704 8.671 33.4 %

13.~ Reactor Reserve Shutdown Hours 0

0 0

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14. Hours Generator On-Line 683,9 8.625,6 32.689.4 l

15. Unit Reserve Shutdown Hours 0

0-0

16. Gross Thermal Energy Generated (MI) 2.012.209 28.758.942 106.335.879

17. Gross Electrical Energy Generated (MI) 700.500 9.888.480 36.0?).756

18. Net Electrical Energy Generated (MI) 675.097 9.550.601 34.472.029

19. Unit Service Factor 91.9 98.5 43.9

'20. Unit' Availability Factor 91.9 98.5 43.9

21. Unit Capacity Factor (Using MDC Net) 79.0-95.0 40.3 22.' Unit capacity Factor (Using DER Net) 79.0 95.0 40.3

23. Unit Forced Outage Rate.

8.1 1.5 49.4

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

Unit 1 Cycle 4 refuel outaae in March 1990 with a duration of 70 days.

I

25. If Shut' Down At End Of Report Period, Estimated Date of Startup:

N/A m

p-OPERAllNG DATA REPOR1 DOCKET NO..50-328 DATE January 5. 1990 COMPLETED BY T. J. Hollomon TELEPHONE (615) 843-7528 OPERA 11NG STATUS

! Notes l-1.

Unit Name:

Seguoyah Unit Two 2.

Reporting Period:

December 1989 1

1 3.

Licensed thertnal Power (Mt): 3411.0 4.

Nameplate Rating (Gross We): 1220.6 5.

Design Electrical Rating (Net Me): 1148.0 1

6.

Maximum Dependable Capacity (Grnss We): 1183.0 1

1 7.

Maxinun Dependable capacity (Net We): 1148.0 1

i 8.

If Changes Occur in Capacity Ratings (Items Nunber 3 Through 7) Since Last Report, Give Reasons:

N/A 9.

Power Level To blhich Restricted, If Any (Net We):

N/A

10. Reasons for Restrictions, if Any:

N/A This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 744 8.760 66.505

12. Number of flours Reactor bias Critical 744 6.344 33.530

13. Reactor Reserve Shutdown llours 0

0 0

14.. Hours Generator On-Line 744.0 6.104.5 32.695.8 i

15. Unit Reserve Shutdown llours 0

0 0

16. Gross Therinal Energy Generated (MI) 2.390.942 18.686,161 100.410.259 l'

17. Gross Electrical Energy Generated (MI) 818.580 6.332.076 34.020.796

18. Het Electrical Energy Generated (MI) 786.980 6.057.238 32.448.334

19. Unit Service Factor 100,0 69.7 49.2

20. Unit Availability Factor 100.0 69.7 49.2

21. Unit Capacity Factor (Using MDC Net) 92.1 60.2 42.5

22. Unit Capacity Factor (Using DER Net) 92.1 60.2 42.5 I

23. Unit Forced Outage Rate 0.0 6.3 45.0

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

An Ice condenser outaoe is scheduled in March 1990, with duration of 9 days.

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25. If Shut Down At End Of Report Period, Estinated Date of Startup:

N/A

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2 UNIT SHUTDOWNS AND POWER REDUCTIONS-LMIT NAME:

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REPORT MONTH: December 1989~7 1 COMPLETED BY:7. J. Ho11 ament

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Method:

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D-Regulatory Restruction' E-Operator Training and License Examination -

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01/08/90 REPORT MONTH:' December 1989 *

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! Power reduction to 80%. I

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! at 75% at end of month.:.!?

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