ML20043A181

Monthly Operating Repts for Apr 1990 for Sequoyah Nuclear Plant.W/900515 Ltr

ML20043A181
Person / Time
Site:	Sequoyah
Issue date:	04/30/1990
From:	Hollomon T, Wallace E TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9005180168
Download: ML20043A181 (9)

Text

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1 TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 37401 5N-157B Lookout Place MAY 151990 U.S. Nuclear Regulatory Commission i ATTN: Document Control Desk Washington, D.C. -20555 i Gentlemen:

'In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) '50-328 SEQUOYAH NUCLEAR PLANT (SQN) - APRIL 1990 MONTHLY OPERATING REPORT Enclosed is the April 1990 Monthly Operating Report as required by SQN Technical Specification- 6.9.1.10.

If you have any questions concerning this matter, please call R'. R. Thompson- T at (615) 843-7470.

I Very truly yours, TENNESSEE VALLEY AUTHORITY j k ll, h i

G. Wallace, Manager Nuclear Licensing and Regulatory Affairs. -i Enclosure i' cc (Enclosure):

INP0 Records Center Regional Administration  !

Institute of Nuclear Power Operations U.S. Nuclear Regulatory Commission j 1100 Circle 75 Parkway, Suite 1500 Office of Inspection and Enforcement  !

Atlanta, Georgia 30389 Region II 101 Marietta Street, NW, Suite 2900  ;

Mr. B. D. Liaw, Director- Atlanta, Georgia 30323 TVA Projects Division-  ;

One White Flint, North Mr. B. A. Wilson, Assistant Director-  ;

11555 Rockville Pike for Inspection Programs i Rockville, Maryland 20852 TVA Projects Division U.S. Nuclear Regulatory Commission ,

Mr. Ted Marston, Director .

Region-II' s Electric Power Research Institute 101 Marietta Street, NW, Suite 2900 P.O. Box 10412 Atlanta, Georgia 0323 Palo Alto,.Callfornia 94304 8 NRC Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, Tennessee 37379 l

900518016e 900430 )

PDR ADOCK 05000327 L' l R PDC . An Equal opportunity Employer -

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t NUCLEAR POWER GROUP 1 SEQUOYAH NUCLEAR PLANT j d

/ MONTHLY OPERATING.' REPORT-'

TO THE'  :

S NUCLEAR-REGULATORY. COMMISSION i f

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't 4 UNIT 1 ,

DOCKET NUMBER 50-327'

. LICENSE NUMBER DPR-77  ;

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UNIT 2. .

DOCKET NUMBER 50-328 ~

LICENSE NUMBER'DPR j e

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OPERATIONAL

SUMMARY

APRIL 1990-UNIT-1 Unit 1 entered its Cycle _4 refueling outage on March 17, 1990. The outage continued.throughout the month of April, with Unit 1 in Mode 6 at the beginning of the month.- On' April'2, 1990, Unit-1 entered an undefined

- mode when all fuel had been removed from the core. Fuel reloading began on  ;

April 17, 1990, and the unit entered Mode 6 at l'17 0 (EDT). Unit 1 entered Mode'5 on April 27, 1990, at 0620 (EDT), and remained in Mode 5 through the end of April.

UNIT 2 Unit 2 generated 769,810 MWh (gross) electrical power during April, with a capacity factor of 90.5 percent. Unit 2 reactor power level was reduced t'o 95 percent on April _8, 1990, for maintenance on FW Heater 28-1, and was returned to 100 percent reactor power level on April'9,1990.

Unit 2 also experienced an unplanned' reactor scram from 100 percent power level on April 10, 1990, at 0134 (EDT), when-steps of 51-90.82, " Reactor Trip Instrumentation Monthly Functional Test (SSPS) - Unit 2," were-performed out  !

of sequence. The unit tied online on April 11, 1990, at 1612 (EDT), and was again at 100 percent reactor power-level on April 13, 1990, at 1551 (EDT).

l POWER-0PERATED~ RELIEF VALVES (PORVs) AND-SAFETY VALVES

SUMMARY

l There were no challenges to PORVs or safety-valves.in the month of April.

OFFSITE DOSE CALCULATION MANUAL (00CM) CHANGES There were no changes to the ODCM during the month of April.

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t AVERAGE DAILY UNIT POWER LEVEL DOCKEi NO. 50-327' ,

UNIT One DATE 05-01-90 ,

COMPLETED BY T. J. Ho11omon TELEPHONE (615) 843-7528 .

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MONTH APRIL 1990 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 -

2 17 -

2 2 - 2 18 - 2 _

3 - 2 .19 -

2 4 - 2 20 - 2 5 - 1 21 - 2 _

6 - 2 22 - 1 7 - 2 23 2 8 - 2 24 -

2 9 - 2 25 -

2 _

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- 16 10 26 - 2-F 11 - 18 27 - 2 12 - 2 28 - 2 i 13 - 3 29- - 2 14 - 1 30 - -2  !

15 - 2 31 N/A

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AVERAGE DAILY UNIT POWER LEVEL I

DOCKET NO. 50-328 Unit' Two DATE' 05-01-90

-COMPLETED BY T. J. Ho11omon i TELEPHONE (615) 843-7528 t

MONTH APRIL 1990 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 1132 17 1133 2 1135 18 1132 -

3 1135 19 1132' f 4 1135 20 1131 5 1134 21 1132 i 6 1134 22 1135 7 1133 23' -1134 8 _

1084 24 1135

!- 9 1093 25 1134 10 57 26 1136 11 39 27 1133 12 437 -28 1133 13 1082 29 1132  :

14 1126 30 1131 I 15 1132 31 N/A 16 1133 i

OPERATING DATA REPORT -

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DOCKET NO. 50-327 DATE Hav 1. 1990 -

COMPLETED BY T. J. Hollomon TELEPHONE (6151 843-7528 OPERATING STATUS Notes

.1. Unit Name: Seouovah Unit One

2. Reporting Period: April 1990

3. Licensed Thermal Power (HWt): 3411.0

4. Nameplate Rating (Gross HWe): 1220.6

5. Design Electrical Rating (Net HWe): 1148.0

6. 'Haximum Dependable Capacity (Gross HWe): 1183.0

7. Maximum Dependable Capacity (Net HWe): 1148.0

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

N/A

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

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

11. Hours in Reporting Period . 719 2.879 77.424

12. Number of Hours Reactor Was Critical 0 1.803.2 35.299

13. Reactor Reserve Shutdown Hours 0 0 0

14. Hours Generator On-Line 0 1.803.0 -34.492.4

15. Unit Reserve Shutdown Hours 0- 0 0

16. Gross Thermal Energy Generated (HWH) 0 5.839.530.2 112.175.410

17. Gross Electrical Energy Generated (HWH) .0 2.026.980 38.050.736

18. Net Electrical . Energy Generated (HWH) -2.769 1.957.400 36.429.429

19. Unit Service Factor 0.0 62.6 44.6

20. Unit Availability Factor 0.0 62.6 __

44.6

21. . Unit Capacity Factor (Using HDC Net) 0.0 - 59.2 41.0

' 22. Unit Capacity Factor (Using DER Net)

' 0.0 59.2 41.0

23. Unit Forced Outage Rate ~ 0.0 - 0.0 48.0

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: Hav 22. 1990

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OPERATING DATA REPORT

• DOCKET N0, _S0-328 DATE .Elv 1. 1990 COMPLETED BY . T. 3. Hollomon TELEPHONE (615) 843-7528 OPERATING STATUS Notes 1.' Unit Name: Seouovah Unit Two

2. Reporting Period: April 1990

3. Licensed Thermal Power (MWt): 341).O

4. Nameplate Rating (Cross MWe): 1220.6

5. Design Electrical Rating (Net MWe): 1148.0

6. Maximem Dependable Capacity (Gross MWe): 1183.0

7. Maxiaum Dependable Capacity (Net MWe): 1148.0

' 8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Rep >rt Give Reasons:

N/A

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

10. Reasons- For Restrictions. If Any: N/A' This Month Yr-to-Da te Cumulative

11. Hours in Reporting Period 719 2.879 69.384

12. Nurnber of Hours Reactor Was Critical 691.9 2.851.9 36.382

13. Reactor Reserve Shutdown Hours 0 0 0

14. Hours Generator On-Line 680.4 2.840.4 35.536.2

15. Unit Reserve' Shutdown Hours ' O.0 0- 0

16. Gross Thermal Energy Generated (MWH) _Z.242.120.8 9.390.304.5 109.800.564

17. Gross Electrical' Energy Generated (MWH) 769.810- 3.233.630 37.254.426 -

18. Net Electrical Energy Generated (MWH) 742.585 3.121.273 35.569.607

19. Unit Service Factor 94.6 98.7 51.2

20. Unit Availability Factor 94.6 98.7 51.2

21. Unit Capacity Factor (Using MDC Net) 90.0 94.4 44.7

22. Unit Capacity Factor (Using DER Net) 90.0 94.4 44.7

23. Unit Forced Outage Rate s.4 1.3 43.0

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

Unit 2 Cvele 4 refuelino outaae is scheduled for September 1990 with a duration of 70 davs.

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

;_ , - . . _ - - _- - - _ = - - -

DOCKET NO: 50-327-  : 3 .. 2 UNIT SHUTDOWNS AND POWER REDUCTIONS UNIT.NAME: - One <.: ..

DATE: 05/08/90 REPORT MONTH: Acril 1990 COMPLETED BY:T. J. Hollomon.

. TELEPHONE:16151 843-7528 (

Method of Licensee Cause and Corrective Duration Shutting Down Event' . System Component Action to No. Date- Type' (Hours) Reason' Reactor 3 Report No. Code

• Code ' Prevent Recurrence:

2 900317.. S- 1076.02 C -1 Unit.1 Cycle 4 refueling outage continues.

'5F: Forced 2 Reason- . .

'Methodi.

• Exhibit'G-Instructions-S: Scheduled - A-Equipment Failure (Explain) Manual for. Preparation of Data B-Maintenance or Test 2-Manual . Scram . Entry sheets for Licensee

-C-Refueling

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3-Automatic Scram' .

. Event Report (LER) File -

D-Regulatory Restruction... .. . 4-Continuation of Existing Outage '(NUREG-061):

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

'9-Other-G-Operational Error -(Explain) '5 Exhibit I-Same'Sosrce H-Other (Explain)'-

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DOCKET NO: 50-328 , ,

UNIT SHUTDOWNS AND POWER REDUCTIONS UNIT NAME: Two ' ,

• DATE: 05/08/90 A

REPORT HONTH: Aoril 1990 COMPLETED BY:T. -J. Holloecn ~

. TELEPHONE:I6151 843-7528. e si Method of Licensee Cause and Corrective Duration Shutting'Down Event System Component Action to No. Date Type' (Hours) Reason

• Reactor Report No. Code' Code' Prevent Recurrence-.

3 '4/8/90 F B 5 Power levet was reduced to 95 percent on 4/8/90 at 0339 (EDT).. for maintenance on FW Heater 2B-1. Unit 2 was again at 100 percent power on 4/9/90 at 1920 (EDT).

4 4/10/90. F 38.6 B- 3 2-90008 Unit 2 tripped at 0134 (EDT), on 4/10/90, when steps of SI-90.82,

" Reactor Trip Instrumen-tation Monthly functional Test (SSPS)

- Unit 2." were performed out of-sequence. The unit

' tied online on 4/11/90 at 1612 (EDT), and was again at.iOO percent reactor power level on 4/13/90 at 1551 (EDT).

'F: Forced 2 Reason: 8 Hethod:

• Exhibit G-Instructions 5: 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 Restruction 4-Continuation of Existing Outage (NUREG-061)

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

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