ML20087F020

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Monthly Operating Repts for Jul 1995 for Sequoyah Nuclear Plant
ML20087F020
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 07/31/1995
From: Hollomon T, Shell R
TENNESSEE VALLEY AUTHORITY
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9508150082
Download: ML20087F020 (10)
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Tennessee Valley Authority, Post Omce Box 2000, Soddy-Dasy, Tennessee 37379-2000 August 9, 1995 U.S. Nuclear Regulatory Commission ATTN Document Control Desk Washington, D.C. 20555 Gentlemen In the Matter of ) Docket Nos. 50 *27 J

Tennessee Valley Authority ) 50-328

If you have any questions concerning this matter, please call J. W. Proffitt at (615) 843-6651.

Sincerely, L4 R. H. Shell

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Manager SQN Site Licensing Enclosure cc See page 2 s

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9508150002 950731 PDR ADOCK 05000327 ,

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- U.S. Nuclear Regulatory Commission

, Page 2 August 9,11995 cc (Enclosure):

- INPO Records'Conter'  !

Institute of Nuclear Power Operations 700 Galleria Parkway Atlanta, Georgia 30339-5957 ~!

Mr. D. E. LaBarge, Project Manager

. U.S. Nuclear. Regulatory Commission one White Flint, North 11555 Rockville Pike ,

Rockville,1 Maryland 20852-2739 Mr. Josephisantucci, 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 II-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 i

SEQUOYAH NUCLEAR PLANT MONTHLY OPERATING REPORT TO Tile NUCLEAR REGULATORY COMMISSION i JULY 1995 4 i

UNIT 1 i

DOCKET NUMBER 50-327 LICENSE NUMBER DPR777 i

UNIT 2 ,

DOCKET NUMBER 50-328  :

LICENSE NUMBER DPR-79 t

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OPERATIONAL

SUMMARY

JULY 1995 UNIT 1 Unit 1 generated 713,010 megawatthours (MWh) (gross) electrical power during July with a capacity factor of 83.26 percent.

Unit I was operating at approximately 48 percent reactor power at the beginning of the month. Power escalation was initiated on July 1 at 2145 EDT. Unit I reached 100 percent power on July 3 at 0508 EDT.

At 1315 EDT on July 17, Unit I reactor tripped following a turbine trip an a result of a trip signal initiated by the A phase main transformer protection circuit. The cause of the event was the sudden pressure relay located on the transformer. The sud. den pressure relays on each of the main transformers were disabled. Unit 1 was taken critical on July 18 at 0642 EDT and was tied to the grid on July 19 at 0337 EDT.

Unit I was operating at approximately 93 percent as of the end of July.

Unit I has started coastdown to the Unit 1 Cycle 7 refueling outage.  ;

UNIT 2 -

Unit 2 generated 844,350 megawatthours (MWh) (gross) electrical power during July with a capacity factor 99.03 percent. There were no outages or power reductions of greater than 20 percent to report during July.

Unit 2 was operating at 99.5 percent at the end of July. l l

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,., AVERACE DAILY UNIT POWER LEVEL

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DOCKET No. 50-327 UNIT No. One- 'DATE: 08-03-95 '

COMPLETED BY ' iT.-J. Ho11omon ' TELEPHONES- (615) 843-7528 l MONTH: ' JULY 1995 f AVERAGE DAILY POWER LEVEL AVFRAGE DAILY POWER LEVEL-Q&% (MWe-Neti' QAl- (MWe-Net) e h 1 504 17 587 L

2 844 18 -36  ;

3 1099 19 149 4 1118 20 418 ,

5 1114 21 613 ,

.6 1115 22 882 ,

l 7 1115 23 955 i

8 1114 24 915  ;

9 1113 25 917 .)

10 1112 26 927 11 1112 27 1033 12 1114 .28 1047 13 1112 29 1041 l

14 1103 30 1027 f

15 1099 31 1015 16~ 1097 l

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,. , AVERAGE DAILY UNIT POWER LEVEL <

-I DOCKET NO. 50-328 UNIT No. Two DATE: 08-03-95 COMPLETED BYs T. J. Ho11cmon TELEPHONE: f615) 843-7528' MONTH: JULY 1995 l

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AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL-R&1 (MWe-Net) DAX iMWe-Net) 1 1103 17 1096 2 1102 18 1097 ,

3 1098 19 1094  ;

4 1101 20 1096 5 1098 21 1094 6 1096 22 1095 ,

.7 1094 23 1096 8 1091 24 1093  ;

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9 1101 25 1094 10 1101 26 1092 11 1101 27 1094-12 1102 28 1094 13 1100 29 1093 14 1100 30 1095 15 __

1096 31 1091 16 1089 h

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l OPERATING DATA REPORT

' a DOCKET NO. 50-327 DATE 08/03/95 COMPLETED BY T . J . Mo' lomon TELEPHONE (615) 843-7528

' OPERATING STATUS l Notes l

1. Unit Name: Seouovah Unit One l l
2. Reporting Period: July 1995 l l
3. Licensed Thermal Power (MWt): 3411.0 l l
4. Nameplate Rating (Gross MWe): 1220.6 l l
5. Design Electrical Rating (Net MWe): 1148.0 l. l
6. Maximum Dependable Capacity (Gross We): 1151.0 l l
7. Maximum Dependable Capacity (Net MWe): 1111.0 l l
8. If Changes Occur in Capacity Ratings (Item Numbers 3 Throu9h 7) Since Last Report, Give Reasons:
9. Power Level To Which Restricted, If Any (Net We): N/A
10. Reasons For Restrictions, If Any: N/A Yr-to-Date This Month Cumulative
11. Hours in Reporting Period 744 5.087 123.456 12 Number of Hours Reactor Was Critical 726.5 4.846.6 66.897
13. Reactor Reserve Shutdown Hours 0 0 0
14. Hours Generator On-Line 705.6 4.803.8 65.408.1
15. Unit Reserve Shutdown Hours 0 0 0
16. Gross Thermal Energy Generated (MWH) 2.143.192.6 15.624.103.2 213.200.101
17. Gross Electrical Energy Generated (MWH) 713.010 5.384.880 72.435.764
18. Net Electrical Energy Generated (MWH) 681.175 5.193.220 69.456.633
19. Unit Service Factor 94.8 94.4 53.0
20. Unit Availability Factor 94.8 94.4 53.0
21. Unit Capacity Factor (Using MDC Net) 82.4 91.9 50.6
22. Unit Capacity Factor (Using DER Net) 79.8 88.9 49.0
23. Unit Forced Outage Rate 5.2 5.6 35.1
24. Shutdowns Scheduled Over Next 6 Months (Type Date, and Duration of Each):

Unit 1 Cvele 7 refuelina outane is scheduled to becin September 9.1995. with a duration of 50 davs.

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

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/ . , , OPERATING DATA REPORT j?

DOCKET NO. 50-328 DATE 08/03/95 COMPLETED BY T. J. Ho11amon TELEPHONE (615) 843-7528 OPERATING STATUS l Notes l

1. Unit Name: Seavovah Unit Two l l
2. Reporting Period: July 1995 l l-
3. Licensed Thermal Power (Wt): 3411.0 l l
4. Nameplate Rating (Gross We): 1220.6 l- l S. Design Electrical Rating (Net We): 1148.0 l l
6. Maximum Dependable Capacity (Gross We): 1146.0 l l
7. Maximum Dependable Capacity (Net We): 1106.0 l l
8. If Changes Occur in Capacity Ratings (Item Numbers 3 Through 7) Since Last Report, Give Reasons:

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9. Power Level To Which Restricted, If Any (Net W e): N/A
10. Reasons For Restrictions, If Any: N/A This Honth Yr-to-Date Cumulative
11. Hours in Reporting Period 744 5.087 115.416
12. Number of Hours Reactor Was Critical 744.0 4.589.7 68.946
13. Reactor Reserve Shutdown Hours 'O O O i
14. Hours Generator On-Line 744.0 4.475.1 67.184.8
15. Unit Reserve Shutdown Hours 0 0 0
16. Gross Thermal Energy Generated (WH) 2.522.066.4 14.823.405.6 212.350.868
17. Gross Electrical Energy Generated (WH) 844.350 5.058.753 72.066.362
18. Net Electrical Energy Generated (HWH) 814.278 4.870.453 _ 68.984.635
19. Unit Service Factor 100.0 88.0 58.2
20. Unit Availability Factor 100.0 88.0 58.2
21. Unit Capacity Factor (Using HOC Net) 99.0 86.6 54.0 '
22. Unit Capacity Factor (Using DER Net) 95.3 83.4 52.1
23. Unit Fort:ed Outage Rate 0.0 12.0 34.0
24. Shutdowns Scheduled Over Next 6 Honths (Type, Date, and Duration of Each):
25. If Shut Down At End Of Report Period, Estimated Date of Startup:

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. DOCKET Im: 50-127-2 UNIT SHUTDOWNS AND POWER REDUCTIONS. tmIT NAfE: One

_ ' DATE:- 08/03ME .

- REPORT MONTH: July 1995  : COMPLETED BY:T. J. Ho' aman *

TELEPMDNE:(6151 84:i-7528 j; Method of Licensee .

Cause and Correctivet. , ,

Duration Shutting Down Event Systy' Action to ' . -

Compgnent

No. Date Type (Hours) Reason Reactor3 Report No. Code Code -Prevent Recurrence  ;-

3 4 950717 F 38.37 A 3 50-327/95010 FK RLY At 1315 EDT on July 17. the Unit 1 i-

- reactor tripped following a turbine trip as a result of a trip signal initiated by the A phase main transformer protection circuiti The cause of the event was the failure of the sudden pressure .

relay on the A transformer. The -

sudden pressure relays on each of the Units 1 and 2 main transformers were disabled. The transformer was returned to service, and the unit was taken critical on July 18 and tied to the grid on July 19 at 0337 EDT.

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I:F Forced 2 p ,,,,; 3Method: 4 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 Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Continuation of Existing Outage (NUREG-1022)

- E-Operator Training and License Examination 5-Reduction F-Administrative- 9-Other.

G-Operational Error (Explain) - 5 Exhibit I-Same Source 4

H-Other (Explain)

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DOCKET NO: '50-328' UNIT SHUTDOWNS AND POWER REDUCTIONS UNIT NAME: Two ;t-DATE: 08/03/95 'T REPORT PONTH: Julv 1995 COMPLETED BY:T. J. Ho'llomon 3;

-TELEPHONE:(615) 84 M S28 '.

Method of Licenses .

Cause and Corrective- * ' '

Duration Shutting Down Event System Component Action to No. Date Type I (Hours) Reason 2 Reactor3 Report No. Code 4

Code 5

Prevent Recurrence. .

4 There were no outages or power.

reductions of greater than.

20 percent to report during July.

1 I:F Forced 2 p,,,,, 3Method:

'# 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) j E-Operator Training and License Examination 5-Reduction F-Administrative 9-Other G-Operational Error (Explain) 5 Exhibit I-Same Source .

H-Other (Explain)

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