ML20134N250

Monthly Operating Repts for Oct 1996 for Sequoyah Nuclear Plant

ML20134N250
Person / Time
Site:	Sequoyah
Issue date:	10/31/1996
From:	Hollomon T, Shell R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9611260233
Download: ML20134N250 (9)

Text

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nn Tennessee vaney Authonry. Post Omce Box 2000. S$c hv D$ y [enne e 37379 l

W Novembrsr 15,1996 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 l

Gentlemen:

In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) 50-328 j SEQUOYAH NUCLEAR PLANT (SON) - OCTOBER 1996 MONTHLY OPERATING REPORT Enclosed is the October 1996 Monthly Operating Report as required by SON Technical Specification 6.9.1.10.

If you have any questions concerning this matter, please telephone J. W. Proffitt at (423) 843-6651.

Sincerely, Yi R. H. Shell Manager SON Site Licensing and Industry Affairs Enclosure cc: See page 2 9611260233 961031 PDR ADOCK 05000327 R PDR .

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U.S. Nuclear Regulatory Commission Page 2 November 15,1996 l

l cc (Enclosure): 1 Mr. R. W. Hernan, Project Manager '

U.S. Nuclear Regulatory Commission 1 One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739 INPO Records Center Institute of Nuclear Power Operations 700 Galleria Parkway Atlanta, Georgia 30339-5957 Mr. James Lang, Manager Advanced Reactor Department Electric Power Research Institute 3340 Hillview Avenue Palo Alto, California 94304 NRC Resident inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379-3624 Regional Administrator U.S. Nuclear Regulatory Commission Region 11 j 101 Marietta Street, NW, Suite 2900 l Atlanta, Georgia 30323-2711 Mr. F. Yost, Director Research Services Utility Data institute 1200 G Street, NW, Suite 250 Washington, D.C. 20005

TENNESSEE VALLEY AUTIIORITY SEQUOYAII NUCLEAR PLANT MONTIILY OPERATING REPORT TO THE NUCLEAR REGULATORY COMMISSION OCTOBER 1996 i

a UNIT 1 DOCKET NUMBER 50-327 LICENSE NUMBER DPR-77 1

UNIT 2 DOCKET NUMBER 50-328 LICENSE NUMBER DPR-79 l

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-327 UNIT NO. One DATE: 11-06-96 COMPLETED BY: T. J. Hollomon TELEPHONE: (423) 843-7528 MONTH: OCTOBER 1996 4

AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL DAY (MWe-Net) DAY (MWe-Net) l 1 1135 17 1137 )

i 2 1134 18 1138 3 1133 19 1138 4 1134 20 1136 5 1133 21 1136 6 1135 22 1136 7 1135 23 1136 8 1137 24 1136 l 9 1136 25 1136 10 1136 26 1125 l

11 1136 27 1134 12 1137 28 1132 13 1138 '29 1130 14 1138 30 1135 15 1135 31 1136 16 1137

. .._ . .- _ _ . _ _ _ _ . . . . . _ . _ . . .. . _ . . _ _ - - _ . . . _._m.

1 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-328 UNIT NO. Two DATE: 11-06-96 COMPLETED BY: T. J. Hollomon TELEPHONE: (423) 843-7528 i MONTH: OCTOBER 1996 I

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. AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL l DAY (MWe-Net) DAY (MWe-Net) 1 1134 17 -9 l 2 1133 18 -9

,; 3 1132 19 -9 4 1133 20 -12 5 1132 21 -14 2

6 1133 22 -26 7 1134 23 -33 8 1136 24 -33 1

1 9 1135 25 -35 l

10 1136 26 -33 11 325 27 -35 12 -18 28 -35 13 -9 29 -33 14 -9 30 -26 15 -9 31 -26 16 -9

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OPERATING DATA REPORT  !

DOCKET NO. 504?7 DATE 11/06/96 i COMPLETED BY T. J. Hollomon TELEPHONE (423) 843-7528 OPERATING STATUS Notes

1. Unit Name: Seouovah Unit One

2. Reporting Period: Octnher 1996

3. Licensed Thermal Power (MWt): 3411 0

4. Nameplate Rating (Gross (MWe):.1220 6

5. Design Electrical Rating (Net MWe): 114R0

6. Maximum Dependable Capacity (Gross MWe): 1155.0

7. Maximum Dependable Capacity (Net MWe): 1117 0

8. If Changes Occur in Capacity Ratings (Item Numbers 3 Through 7) Since Last Report, Give Reasons:

The unit capacity ratings (Items 6 and 7) have been revised to reflect the baseline testing cerformed on both units during Cycle 7 operation.

9. Power Level to Which Restricted, If Any (Net MWe): N/A

10. Reasons for Restrictions, If Any: N/A This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 745 7.320 134,449

12. Number ofHours Reactor Was Critical 745.0 7,004.3 75,899

13. Reactor Reserve Shutdown Hours 0 0 0

14. Hours Generator On-Line 745.0 6,937.7 74,164.1

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWh) 2,534,554.6 23,332,885.2 241,664,301

17. Gross Electrical Energy Generated (MWh) 875,984 7,999,367 82,164,712

18. Net Electrical Energy Generated (MWh) 845,972 7,721,279 78,805,426

19. Unit Service Factor 100.0 94.8 55.2

20. Unit Availability Factor 100 0 94.8 55.2

21. Unit Capacity Factor (Using MDC Net) 101.7 94.4 52.5

22. Unit Capacity Factor (Using DER Net) 98.9 91.9 51.1

23. Unit Forced Outage Rate 0.0 0.7 32.5

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

Unit 1 is scheduled to enter a maintenance outane on November 15.1996 with a duration of 3 days.

Unit 1 is scheduled to enter a refueling outage on March 21,1997 with a duration of 50 days.

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

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y;- .

OPERATING DATA REPORT 1-DOCKET NO. 50-328  ;

DATE- 11/06/96 ,

COMPLETED BY T. L Hollomon -

l TELEPHONE (423) 843-7528 OPERATING STATUS

.. Notes l

. I' Unit Name: .Seauovah Unit Two

.2. Reporting Period: October 1996 3? Licensed Thermal Power (MWt): 3411.0 4.: Nameplate Rating (Gross (MWe): 1220 6

5. Design Electrical Rating (Net MWe): 1148.0 6l Maximum Dependable Capacity (Gross MWe): 1155.0

7. Maximum Dependable Capacity (Net MWe): 1117.0 ,

8.~ If Changes Occur in Capacity Ratings (Item Numbers 3 Through 7) Since Last Report, Give Reasons: '1 Ihe unit capacity ratings (Items 6 and 7) have been revised to reflect the baseline testing performed on both units during Cycle 7 operation 9, Power Level to Which Restricted, If Any (Net MWe): N/A

10. Reasons for Restrictions, If Any: N/A ')

This Month Yr-to-Date . Cumulative.

I1. Hours in Reporting Period 745 7,320 126,409

12. Number of Hours Reactor Was Critical 248.5 5,643.7 78,237-

13. Reactor Reserve Shutdown Hours -0 0 0 ,

14. ' Hours Generator On-Line 248.45 5,590.2- 76,366.4 l

15. Unit Reserve Shutdown Hours 0 0- 'O

16. Gross Thermal Energy Generated (MWh) 843,363.6 18,815,841.0 243,357,438-

17. Gross Electrical Energy Generated (MWh) 290,218 6,463,045 82,686,817

18. Net Electrical Energy Generated (MWh) 269,998 6,219,269 79,221,138 19, Unit Service Factor -33 3 76.4 60.4

20. Unit Availability Factor 11 1 76.4 60.4

" 21. Unit Capacity Factor (Using MDC Net) 32 4 76.1 56.1

- 22. Unit Capacity Factor (Using DER Net) 31.6 74.0 54.6

23. Unit Forced Outage Rate 66.7 8.2 31.5

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

25 If Shut Down At End of Report Period, Estimated Date of Stanup: Navamhar a 1006

DOCKET NO.~: 50-327-UNIT NAME. - One ~ , . ' ^

UNIT SHUTDOWNS AND POWER REDUCTIONS DATE:- 11/06/96 COMPLETED BY: T. J. Hollomon TELEPHONE: (423) 843-7528 REPORT MONTH: OCTOBER 1996 2

No. Date Type' Duration Reason Method of Licensee System Component Cause and Correctist Action to Present (Hours) ' Shutting Event Report Code' Code' Recurrence Down. No.

Reactor' There were no outages or power reductions of greater than 20 percent to report during October.

G l

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'F: Forced Reason: ' Method " Exhibit G-Instructions S: Scheduled . A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram Entry sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File

- D-Regulatory Restriction .

4-Continuation of Existing Outage (NUREG-1022) - .

E-Operator Training and License Exam 5-Reduction F-Administrative 9-Other i!xhibit I- Same Source G-Operational Error (Explain)

H-Other (Explain) i

DOCKET NO.: 50-328 ,

UNIT NAME: Two UNIT SIRTII) OWNS AND POWER REDUCTIONS DATE: 11K16/96 ',, "

COMPLETED BY: T.1 Hollomon REPORT' MONTH: OCTOBER 1996 TELEPHONE- (423) 843-7528 - '.

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No. Date Type' Duration Reason Method of Licensee System Component Cause and Correctist Action to Present (Hours) Shutting Event Report Code

• Code' Recurrence Down No.

Reactor' 3  % 1011 F 496.55 A 2 50-328/96005 JI PS On October 1i the operator at the controls initiated a manual reactor trip at 0827 EDT.

This action was taken because of an unexpected loss of turbine load. The loss of turbine load was caused by the malfunction of the tuibine impulse pressure switches.

The pressure switches malfunction was caused by corrosion product build-up that was the result of water intrusion. On July

.16,1996 a fire detector failed and the area below the high pressure turbine was sprayed down with water from the fire protection system. Inspections were performed and no indications of damage of affect to in-senice equipment was identified. The cause of the event was inadequate field inspections following the spray down esent.

The corrective actions include replacement of the pressure switches and prosiding lessons learned to the appropriate site personnel.

2

'F: Forced Reason: ' Method ' Exhibit G-Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram Entry sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Continuation of Existing Outage - (NUREG-1022)

E-Operator Training and License Exam 5-Reduction 5

- F-Administrative 9-Other Exhibit I- Same Source G-Operational Error (Explain)

H-Other (Explain)

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