ML20085G073

Monthly Operating Repts for May 1995 for Sequoyah Nuclear Plant Units 1 & 2

ML20085G073
Person / Time
Site:	Sequoyah
Issue date:	05/31/1995
From:	Hollomon T, Shell R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9506200061
Download: ML20085G073 (10)

Text

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DA Tennessee VaEy Auttery Post Omce Bm 2000. Soddy-Dasy. Termessee 37379

-June 14, 1995 U.S. Nuclear Regulatory Commission ATTN: Document Control-Desk washington, D.C. 20555 Gentlemen:  ;

In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) 50-328 SEQUOYAH NUCLEAR PLANT (SQN) - MAY 1995' MONTHLY OPERATING REPORT Enclosed is the May 1995 Monthly Operating Report as required by SQN '

Technical Specification 6.9.1.10.

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

Sincerely, R. H. Shall Manager SQN Site !.icensing Enclosure cc See page 2 9506200061 950531 PDR ADOCK 05000327 R PDR

U.S. Nuclear Regulatory Commission Page 2 June 14, 1995 Ecc (Enclosure):

INPO Records Center 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, Maryland-20852-2739 Mr. Joseph Santucci, Manager Advanced Reactor Department-l- -Electric Power Research Institute l 3340 Hillview Avenue-

l. Palo Alto, California 94304-

'NRC Resident Inspector r

Sequoyah Nuclear Plant i 2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379-3624-1 Regional Administrator i

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n U.S. Nuclear Regulatory Commission

! Region II l 101 Marietta' Street, NW, suite 2900 Atlanta,' Georgia 30323-2711-l 1

Mr. F. Yost, Director Research Services- 1

l. Utility Data Institute

! 1200 G Street,'NW, Suite 250 Washington,lD.C. 20005 l

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I TENNESSEE vArAEr AUrnORITY-SEQUOYAH NUCLEAR PLANT MONTHLv OPERATING REPORT-TO THE NUCLEAR REGULATORY COMMISSION MAY 1995 UNIT 1 DOCKET NUMBER 50-327 LICENSE NUMBER DPR-77 l

UNIT 2 DOCKET NUMBER 50-328 LICENSE NUMBER CPR-79 i

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, l OPERATIONAL

SUMMARY

l MAY.1995 UNIT 1 Unit 1' generated 877,100 megawatthours (MWh) (gross) electrical power. .

during May with,a capacity factor of 102.4 percent. Unit 1 operated.near. l 100 percent: reactor powersthroughout the month of.May. l l

L UNIT 2 i

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Unit.2 generated 811,280 megawatthours (MWh)' (gross) electrical power ,

during May with a capacity factor of 95.2fpercent. Unit 2 was offline on May 1 as a result of an' automatic turbine / reactor _ trip that occurred on ,

April 28 at 2031'EDT. Unit 2 returned to operation and tied online'at

' 0353 EDT on May 1.

On May.1 et 0715 EDT with Unit 2 operating at 13 percent reactor power, a- _

l steam leak was reported on main turbine crossover piping. 2-VLV-7-5422

. turbine test valve had blown off and could not be isolated for repair.

The turbine was taken offline at 1036 EDT and the' reactor' remained I- critical. . Repairs'were completed and. Unit 2 was tied to the grid on May.2.at 0616 EDT. . Unit'2 reached 99 percentLreactor' power on May.3 at-I' =0415 EDT. ,

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On May 31 at 1809 EDT,' Unit 2 experienced an' automatic turbine / reactor.

trip as a result of a stator cooling water failure signal l received:during  ;

chlorination of.-the generator stator cooling water. system.- Unit 2 entered Mode 3 and remain =d offline at the end of.May.'

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-327 UNIT No. One DATE: 06-05-95 COMPLETED BY: T. J. Hollomon TELEPHONE: (615) 843-7528 HONTH: MAY 1995 b

AVERAGE DAILY POWER LEVEL ^ AVERAGE DAILY POWER LEVEL Rh1 (MYe-Net) gal (MWe-Nat) 1 1144 17 1133- F

'2 1146- 18 1142 3 1144' 19 1142' 4 1145 20 1133

,5 1145 21 1139 6 1150 22 1139

'i 7 1147 23 1137 l

8 1147 24~ 1139 ,

I 9 1142 25 1141 j 10 1141 26 1140 11 .__ 1146 27 __1140 12 3146 28 ___

1139 13 1143 29 1140 14 1145 30 1138 15 1135 31 1135' 16 1131 j,

AVERACE DAILY UNIT POWER LEVEL DOCKET NO. 50-328 UNIT No. Two DATE: 06-05-95 COMPLETED BY: T. J. Hollomon TELEPHONE: (6151'843-7528' MONTH: MAY 1995 AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL.

Rh1 (MWe-Net) QAX (MWe-Net) 1 -9 17 1128 2 355 18 1121 3 1100 19' 1125 4 1117 20 1121' S 1122 21 1123 l

6 1126 .22 1123 7 1131 23 '1118 8 1127 24 1123 9 1124 25 1123 10 1123 26 1124 11 1124 27 1123 12 1123 28 '1122 13 1126 29 1123 14 1124 30 1115 15 1126 31 838 16 1122 l

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, '1 OPERATING DATA REPORT l DOCKET NO. 50-327 -l DATE 06/05/95 COMPLETED BY . J . Ho' lomon 4 TELEPHONE f615) 84'.l-7528 I 0PERATING STATUS l Notes l

1. Unit Name: 'Seouovah Unit One l l l

2. Reporting Period: May 1995 l 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 MWe): 1148.0 l l l

' 6. Maximum Dependable Capacity (Gross We): 1151.0 l l  !

7. . Maximum Dependable Capacity (Net We): 1111.0 l 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 We): N/A a). . Reasons For Restrictions, If Any

• N/A l

This Month Yr-to-Date, Cumulative )

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11. Hours in Reporting Period 744 3.623 121.992 l

12. Number of Hours Reactor Was Critical 744.0 3.426.ti 65.476

13. Reactor Reserve Shutdown Hours 0 0 0

14. Hours Generator On-Line 744.0 3.412 2 64.016.5

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 2.535.188.9 11.417.331.1- 208.993.328

17. Gross Electrical Energy Generated (MWH) 877.100 3.970.360 71.021.244

18. Net Electrical Energy Generated (WH) 848.851 3.837.001 68.100.6 4

19. Unit Service Factor 100.0 94.2 52.5

20. Unit Availability Factor 100.0 94.2' 52.5

21. Unit Capacity Factor (Using HDC Net) 102.7 95.3 50.2

22. Unit Capacity Factor (Using DER Net) 99.4 92.3 48.6

23. Unit Forced Outage Rate 0.0 5.8 35.5

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and C1 ration of Each):

Unit 1 Cvele 7 refuelino outaae is scheduled to beain Sootember 9.1995. with a duration of -

53 days.

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

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OPERATING DATA REPORT DOCKET NO. 50-328  ;

.DATE 06/05/95 COMPLETED BY T. J. Ho11amon TELEPHONE (615) 843-7528 OPERATING STATUS 1 l Notes l

1. Unit Name: Seouovah Unit Two l l

2. Reporting Period: May 1995 l l-

3. Licensed Thermal' Power (Wt): 3411.0 l l

4. Nameplate Rating (Gross We): 1220.6 l .l

5. Design Electrical Rating (Not We): 1148.0 l l.

6. Maximum Dependable Capacity (Gross MWe): 1146.0 l. l

7. Maximum Dependable Capacity (Net W e): 1106.0 l -l

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

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

11. Hours in Reporting Period 744 3.623 113.952

12. Number of Hours Reactor Was Critical 738.2 3.147.9 67.504

13. Reactor Reserve Shutdown Hours 0 0 0

14. Hours Generator On-Line 714.6 3.042.5 65.752.2

15. Unit Reserve Shutdown Hours 0 0 0 4

16. Gross Thermal Energy Generated (MWH) 2.374.780.1 10.024.569.1 207.552.032 j

17. Gross Electrical Energy Generated (MWH) 811.280 3.442.573 70.450.182 I

18. Net Electrical Energy Generated (MWH) 782.552 3.311.841 67.426.023-

19. Unit Service Factor 96.0 84.0 57.7

20. Unit Availability Factor 96.0 84.0 57.7

21. Unit Capacity Factor (Using MDC Net) 95.1 82.7 53.5

22. Unit Capacity Factor (Using DER Net) 91.6 79.6 51.5

23. Unit Forced Outage Rate 4.0 -16.0 34.4

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: June 2.~1995-

DOCKET NO: 50-327  ?

UNIT SHUTDOWNS AND POWER REDUCTIONS UNIT NAME: One DATE: M/)1/95

• REPORT MONTH: May 1995 COMPLETED BY:T. . .;4ollosma TELEPHONE:(615) 543-7523 ..

Method of Licensee Cause and Corrective- I~

Durati M ,

Shutting Down Event- Systy Comppent . Action to - l No. Date Type (Ho'Jrs) I see.on' " Reactor Report No. Code Code ' Prevent Recurrence There were no outages er power -

reductions of greater than 20 l percent to report during May.

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I:F Forced 2 Reason: 3 Method: 4Enhibi t' G-Instructions S: Scheduled A-Equipment Failure (Explain) 'l-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 Restruction 4-Continuation of Existing Outage - (MJREG-1022)

E-Operator Training and License Examination 5-Reduction ~

.F-Administrative. 9-Other G-Operational Error (Explain) .SEnhibit I-Same Source H-Other (Explain)

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DOCKET NO: 50-328 -

UNIT NAME: Two * ' -

UNIT SHUTDOWNS AND POWER REDUCTIONS' ' '

DATE: 06/01/95 .; .

REPORT M) NTH: May 1995 COMPLETED BY:'. .h Ho' l omon ' *

• TELEPHONE:i 615) 843-7528 -

Method of Licensee Cause and Corrective Duration Shutting 0 wn Event Systy C g ent Action to Reactor 3-No. Date' Type ' (Hours) Reason Report No. Code Code Prevent Recurrence 4 950501 F .- 3.9 A 4 50-328/ N/A FK Unit 2 was offline because of a1 95002 turbine / reactor trip that occurred on April 28. Unit 2 returned to -

operation.on May 1 at 0353 EDT.

5 950501 F 19.7 A 5 N/A 'TA . TV On May 1 at 0715 EDT, with Unit 2 operating at 13 percent reactor power, a steam leak occurred on the main turbine crossover piping. A test valve had blown off and could not be isolated. The turbine was taken offline for repairs. The valve was repaired,'and Unit 2 was returned to operation on May 2 at 0616 EDT.

6 950531 F~ 5.9 N/A 3 50-328/95003 TJ - TS On May 31 at 1809 EDT, Unit 2 ..

experienced an. automatic turbine /

reactor trip as a result of a stator cooling water failure signal received during chlorination of the generator stator cooling water.

The cause and corrective actions are being investigated.

I 2 g,,,,, 3 Method: #' Exhibit G-Instructions -

I:F FM ced '

5: Scheduled A-Equipment Failure (Explain) 1-Manual ~ for Preparation of Data

' B-Maintenance or Test 2-Manual Scram Cntry sheets for Licensee

-C-Refueling 3-Automatic Scram -Event Report (LER) File D-Regulatory Restruction 4-Continuation of Existing Outage (h MEG-1922)

' 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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