ML20133A112

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Monthly Operating Repts for Nov 1996 for SQN Plant
ML20133A112
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 11/30/1996
From: Hollomon T, Shell R
TENNESSEE VALLEY AUTHORITY
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9612300069
Download: ML20133A112 (11)
v • d • e


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l En Tennessee Valley Authonty. Post Offee Box 2000. Soddy Daisy Tennessee 37379 l

December 14,1996 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

l In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) 50-328 l

SEQUOYAH NUCLEAR PLANT (SON) - NOVEMBER 1996 MONTHLY OPERATING REPORT Enclosed is the November 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, 2/l2bA R. H. Shell Manager SON Site Licensing and Industry Affairs Enclosure cc: See page 2 [N, if[l 9612300069 961130 PDR ADOCK 05000327 R PDR 300003

U.S. Nuclear Regulatory Commissic,n Page 2 December 14,1996 cc (Enclosure):

Mr. R. W. Hernan, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North ,

11555 Rockville Pike Rockville, Maryland 20852-2739 INPO Records Center Institute of Nuclear Power Operations 700 Galleria Parkway  ;

, Atlara, Georgia 30339-5957 4 Mr. mes Lmp, Manager Advanced Rt.Letor Department ,

Electric Power Research Institute i 3340 Hillview Avenue l Palo Alto, California 94304 NRC Resident inspector I Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379 3624 Regional Administrator j U.S. Nuclear Regulatory Commission l Region ll ]

101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323-2711 ,

Mr. F. Yost, Director Research Services Utility Data Institute 1200 G Street, NW, Suite 250 Washington, D.C. 20005

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TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT MONTHLY OPERATING REPORT TO THE NUCLEAR REGULATORY COMMISSION NOVEMBER 1996 UNIT 1 DOCKET NUMBER 50-327 LICENSE NUMBER DPR-77 UNIT 2 DOCKET NUMBER 50-328 LICENSE NUMBER DPR-79 l

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.s l OPERATIONAL

SUMMARY

NOVEMBER 1996 i ,

{' UNIT 1 i

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Unit 1 generated 745,062 megawatthours (MWh) (gross) electrical power during November with a capacity j factor of 89.59 percent. On November 15 at 1700 EST, a Unit 1 shutdown was initiated for a planned maintenance outage. At approximately 35 percent power a manual reactor trip was initiated at 0031 EST on November 16 following feedwater isolations on all three heater strings. Unit I reactor was taken critical on November 17 at 1638 EST. Unit I was tied online on November 18 at 0510 E$T. On November 19 with Unit 1 at approximately 57 percent power, a power decrease to 15 percent was initiated at 1759 EST to allow j draining of the extraction line to No. 4 C intermediate heater. The generator was taken offline at 2110 EST on  :

- November 19 and the reactor was maintained at 15 percent power. On November 20 at 0100 EST, Unit 1 l was tied online and reached 100 percent reactor power on November 21 at 0156 EST. 1 l

Unit I was operating at 100 percent power at the end of November.

UNIT 2 Unit 2 generated 721,515 megawatthours (MWh) (gross) electrical power during November with a capacity factor of 86.76 percent. Unit 2 was in Mode 4 at the beginning of November as a result of maintenance activities on the motor-driven auxiliary feedwater pumps. Maintenance and testing on MDAFW pumps was completed. On November 1, Unit 2 entered Mode 3 st 1105 EST following completion of the maintenance activities. Unit 2 reactor was taken critical on November 3 at 0755 EST. On November 4 at 1230 EST, Unit 2 entered Mode 1 and was tied online at 2330 EST. Unit 2 was operating at 100 percent power on November 1 5 at 2235 EST.

Unit 2 was operating at 100 percent reactor power at the end of November.

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-327 UNIT NO. One DATE: 12-05-96  ;

, COMPLETED BY: T. J. Hollomon TELEPHONE: (423) 843-7528

MONTH: NOVEMBER 1996 1 AViiRAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL
DAY (MWe-Net) DAY (MWe-Net) i 1 1136 17 -30 l 2 1136 18 179 l

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! 3 1136 19 461 I f

4 1143 20 741  ;

5 1143 21 1144 6 1145 22 1149 i

7 1144 23 1148 8 1139 24 1147 9 1147 25 1149 10 1146 26 1148 11 1148 27 1147 I 12 1145 28 1151 13 1147 29 1151 14 1149 30 1150 15 1074 31 N/A 16 -20

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-328 UNIT NO. Two DATE: 12-05-96 COMPLETED BY: T. J. Hollomon TELEPHONE: (423) 843-7528 MONTH: NOVEMBER 199_6 AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL DAY - (MWe-Net) DAY (MWe-Net) l l

1 -28 17 1143  ;

2 -28 18 1149 I l

3 -28 19 1147 4 -33 20 1148 ,

i 5 599 21 1145 l 6 ..I132 22 1145 7 1136 23 1144 1

8 1139 24 1144 j l

9 1085 25 1145 j 10 1089 26 1145 l

11 1143 27 1144 12 1145 28 1148 13 1143 29 1148 14' 1144 30 1147 15 1142 31 N/A 16 1141

OPERATING DATA REPORT i

DOCKET NO. 50A?7 DATE 12/05/96  ;

COMPLETED BY T. J. Hollomon TELEPHONE (423) 843-7528 OPERATING STATUS

1. Unit Name: Seauovah Unit One
2. Reporting Period: November 1996 l 3J Licensed Thermal Power (MWt): 3411 0 l 4._ Nameplate Rating (Gross (MWe): 1220 6
5. Design Electrical Rating (Net MWe): 114R 0 1
6. Maximum Dependable Capacity (Gross MWe): 1155.0

-l 7 _ . Maximum Dependable Capacity (Net MWe): 1117.0 1

8. If Changes Occur in Capacity Ratings (Item Numbers 3 Through 7) Since Last Report, Give Reasons:
9. Power Level to Which Restricted, If Any (Net MWe): N/A 10.' Reasons for Restrictions, If Any: N/A l

This Month Yr-to-Date Cumulative l

11. Hours in Reporting Period 720 8,040 135,169 .
12. Number of Hours Reactor Was Critical 679.9 7,684.2 76,579 I
13. Reactor Reserve Shutdown Hours 0 0 0
14. Hours Generator On-Line 663.5 7,601.2 74,827.6
15. Unit Reserve Shutdown Hours 0 0 0 ,
16. Gross Thermal Energy Generated (MWh) 2,159,005.3 25,491,890.5 243,823,306  !
17. Gross Electrical Energy Generated (MWh) 745,062 8,744,429 82,909,774 1
18. Net Electrical Energy Generated (MWh) 718,140 ._

8,439,419 79,523,566

19. Unit Service Factor 92.2 94.5 55.4

'20. Unit Availability Factor 0?  ? 94.5 55.4

21. : Unit Capacity Factor (Using MDC Net) 89.3 94.0 52.7
22. Unit Capacity Factor (Using DER Net) 86.9 91.4 51.2
23. Unit Forced Outage Rate 0.6 0.7 32.3

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

Unit I is scheduled to enter a refueline outane 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

i OPERATING DATA REPORT -

DOCKET NO. 50-328 DATE 12/05/96

. COMPLETED BY T. J. Hollomon TELEPHONE (423) 843-7528 OPERATING STATUS Notes -

1. Unit Name: Seouovah Unit Two
2. Reporting Period: November 1996
3. Licensed Thermal Power (MWt): 3411 0
4. Nameplate Rating (Gross (MWe): 1220 6 -
5. Design Electrical Rating (Net MWe). 1148.0
6. -Maximum Dependable Capacity (Gross MWe): 1155.0
7. Maximum Dependable Capacity (Net MWe): 1117.0 _

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8. If Changes Occur in Capacity Ratings (Item Numbers 3 Through 7) Since Last Repon, Give Reasons: I
9. Power Level to Which Restricted, If Any (Net MWe): N/A
10. Reasons for Restrictions, If Any: N/A 1

1 This Month Yr-to-Date Cumulative  !

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11. Hours in Reporting Period 720 8,040 127,129
12. Number of Hours Reactor Was Critical - 664.1 6,307.8 78,901
13. Reactor Reserve Shutdown Hours 0 0 0
14. Hours Generator On-Line 624.50 6,214.7 76,990.9 l
15. Unit Reserve Shutdown Hours 0 0 0 l
16. Gross Thermal Energy Generated (MWh) 2,093,736.4 20,909,577.4 245,451,174
17. Gross Electrical Energy Generated (MWh) 721,515 7,184,560 83,408,332
18. Net Electrical Energy Generated (MWh) 695,237 6,914,506 -79,916,375 19.. Unit Service Factor 86.7 77.3 60.6
20. Unit Availability Factor R6 7 77.3 60.6 21 Unit Capacity Factor (Using MDC Net) 86 4 77.0 56.3
22. Unit Capacity Factor (Using DER Net) 84.1 74.9 54.8
23. - Unit Forced Outage Rate 13.3 8.7 31.4  ;
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

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25. If Shut Down At End of Report Period, Estimated Date of Startup: N/A 1

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DOCKET NO.: 50-327 .

UNTT NAME: One

  • UNIT SHUTDOWNS AND POWER REDUCTIONS DATE: 12/05/96 COMPLETED BY: T. J. Hollomon '

' REPORT MONTH: NOVEMBER 19% TELEPHONE: (423) 843-7528 2

No. Date Type' Duration Reason Method of Licensee System Component Cause and Corrective Action to Prevent .

5 (Hours) Shutting Event Report Code' Code Recurrence Down No.

Reactor' 9  % 1116 S 52.7 B 2 50-327/96010 SN LCV On November 16 at 0031 EST, during a Unit I shutdomt for planned maintenance activities a manual reactor trip was initiated. The manual trip was initiated following feedwater heater isolations. This event occurred as a result of the No. 3 heater drain tank by-pass level control vahr failing to open in response to an increased level in the tank. The cause of the event was a failure to properly evaluate the affects of setting the proportional band to 50 percent.

Changing the proportional band to 50 percent resulted in a decrease in the operational range of the controller. The setpoint for the controller was set outside the operating range with the proportional controller set at 50 percent. Appropriate procedures and the vendor manual will be revised to address the affects of changing the proportional band. Unit I was tied online on November 18 at 0510 EST.

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'F: Forced Reason: ' Method ' Exhibit G-Instructions S: Scheduled A-Equipment I ailcre (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Mamial 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 1 - Same Source G-Operational Error (Explain)

H-Other (Explain)

DOCKET NO.: 50-327- -

UNIT NAME: One

  • UNIT SHUTDOWNS AND POWER REDUCTIONS . DATE: 12105/96 COMPLETED BY: T. J. Hollomon ,

REPORT MONTH: NOVEMBER 19% TELEPHONE: (423) 843-7528 2

No. Date T3pe' Duration Reason Method of Licensee System Component Cause and Corrective Action to Prevent .

(Hours) Shutting Event Report Code' Code' Recurrence

'Down No.

Reactor' 10  % 1119 F 3.8 B 5 N/A On November 19 with Unit I at approximately 57 percent power, a powra decrease to 15 percent was initiated at 1759 EST to allow draining ofwater from the extraction line to No ? C intermediate heater. The generator was taken offline at 2110 EST on November 19 and the reactor was maintained at 15 percent power. On November 20 at 0100 EST, Unit I was again tied online and reached 100 percent reactor power on November 21 at 0156 EST.

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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 Mxhibit I- Same Source G-Operational Error (Explain)

H-Other (Explain)

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DOCKET NO.: 50-328 -

UNIT NAME: Two '*',

UNIT SHUTDOWNS AND POWER REDUCTIONS DATE- 12/05/96

  • COMPLETED BY: T. J. Ho11 aman I, i REPORT MONTH: NOVEMBER 1996 TELEPHONE: (423) 843-7528 - l 1

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No. Date Type' Duration Reason Method of Licensee . System C+  ;---=t Cause and Corrective Action to Prevent (Hours) Shutting Event Report Code

  • Code' Recurrence .

Down No.

Reactor' 3  % I101 F 95.5 A 4 50-328/96005 JI PS Unit 2 continued in an outage resulting i from a manual reactor trip on October 11 at 0827 EDT as a result of an;- ;u : loss -

of tubine load. Following maintenance on -  ;

RCP seals and motor dnven auxiliary  ;

feedwater pumps Unit 2 was returned to service on November 4 at 2330 EST.  ;

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'F: Forced Reason. " Method ' Exhibit G-Instructions i S: Scheduled A-Equipment Failure (Explain) 1-Manual for Ar-e^ es u of Data - .

B-Maintenance or Test 2-Manual Scram Entry sheets for Licensee  :

. C-Refueling Automatic Scram Event Report (LER) File -

i D-Regulatory Restriction 4-Continuation of Existing Outage (NUREG-1022) t E-Operator Training and License Exam 5-Reduction .

F-Administrative 9-Other 5Exlubit I- Same Source +

G-Operational Error (Explain) ,

H-Other (Explain) '

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