ML20081M485

Monthly Operating Rept for Sept 1983

ML20081M485
Person / Time
Site:	Cooper
Issue date:	10/06/1983
From:	Ballinger P, Thomason P NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
CNSS830621, NUDOCS 8311170272
Download: ML20081M485 (5)

Text

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OPERATING DATA REPORT DOCKET NO. 050-298  ;

DATE 10-6-83 COMPLETED BY P. L. Ballinger TELEPHONE 402-825-3811 OPERATING STATUS Cooper Nuclear Station Notes

1. Unit Name:

2. Reporting Period: September 1983

3. Licensed Thermal Power (MWt): 2381

4. Nameplate Rating (Gross MWe): 836

5. Design Electrical Rating (Net MWe): 778 l L Maximum Dependable Capacity (Gross MWe): 787

7. Maximum Dependable Capacity (Net MWe): 764

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

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

10. Reasons For Restrictions.If Any:

This Month Yr.-to Date Cumulative 720.0 6,551.0 81,096.0

11. Hours In Reporting Period

12. Number Of Hours Reactor Was Critical 621.4 3.471.5 64,842.4

13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

14. Hours Generator On-Line 558.8 3,399.2 63,771.2

15. Unit Reserve Shutdown Hours 0.0 0.0 o,o

16. Gross Thermal Energy Generated (MWH) 1,029,192.0 7,257,096.0 127,318,398.0

17. Gross Electrical Energy Generated (MWH) 333.435.0,_, 2.417,103.0 40,349,331.0

18. Net Electrical EnerEy Generated (MWH) 319.864.0 2.331.537.0 38.904.997.0 77.6 51.9 l 19. Unit Senice Factor 78.6

20. Unit Availability Factor 77.6 51.9 78.6

21. Unit Capacity Factor (Using MDC Net) . 58.1 46.6 62.8

22. Unit Capacity Factor (Using DER Net) 57.1 45.7 61.7

.23. Unit Forced Outage Rate 14.0 3.2 3.8 A

24.' Shutdowns Scheduled Over Next 6 Months (Type. Date.and Duration of Each t:

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

26. Units in Test Status (Prior to Commercial Operation): Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

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8311170272 831006 PDR ADOCK 05000298 tol7n R FDR

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-298 UNIT Cooper Nuclear Station DATE 10-6-83 COMPLETED BY P. L. Ballinger

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TELEPHONE 402-825-3811 MONTH September 1983 DAY AVERAGE DAILY POWER LEVEL DAY AVERACE DAILY POWER LEVEL (MWe Net) (MWe-Net) 1 0 37 0 2

0 g3 150 3 86 g9 502 .

4 119 20 674 5

313 21 693 6 345 22 692 7 469 23 667 506 669 8 24 9

599 652 25 10 632 26 770 11 609 27 759 12 500 ,g 753 13 0 29 718 14 49 30 722 380 IS 3,

16. 467 INSTRUCTIONS On this format, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

c-(9/77)

DOCKET NO. 050-298 UNITSHUTDOWNS AND' POWER REDUC 110NS UNIT NAME Cooner Nucl onr Station DATE 10-6-83

. COMPLETED BY P. L. En11 % gr REPORT MONTil' September TELEPHONE 402-825-3811 "L. -

-, jg 3 Y Licensee ,E*, b. Cause & Corrective No. Date g. Eg 2- 7g& Event g Action to H gI 5 jgg Report a mV g

U Preven: Recurrence 6

~

70 C 2 NA NA NA 1983 Refueling and Maintenance Outage.

83-3 830430 S 1.5 B 4 NA NA NA Manually tripped the turbine for the i

83-4 830904 S beginning of cycle turbine testing.

The reactor was not scrammed for this testing.

83-5 830912 F 54.9 A 3 NA NA NA Loss of Motor Control Center "A" result ed in a feedwater transient and then causel a reactor scram and turbine trip. MCC l "A" was repaired and the plant returned to service.

83-6 830917 F 34.8 A 2 83-14 SF VALVEX A vacuum breaker from the HPCI System-to the torus failed, allowing leakage into the torus. Plant was shut down to repair the valve. The valve was remove l and a blank flange installed. Redundan t valves will ensure system operation.

Valve will be repaired and returned to 4

service at next extended outage.

I 2 i 3' 4 F: Forced Reason: Method: Exhibit G Instructions S: Scheduled A-Equignent Failure (Explain) I-Manual for, Preparation of Data 2 B-Maintenance of Test 2-Manual Scram. Entry Sheets for Licensec C Refueling 3 Automatic Scram. Event Report (LER) File (NUREG.

D Regulatory Restriction' 4-Other (Explain) 0161)

E Operator Training & License Examination F Administrative 5 G-Operational Error (Explain) , Exhibit I Same Source pl/77) Il Other (Explain)

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l OPERATIONS NARRATIVE Cooper Nuclear Station September 1983 I

The 1983 Refueling and Maintenance Outage ended on September 1, 1983 at 2140 with the Beginning of Cycle (BOC) 9 first reactor criticality. Cycle 9 is scheduled to run to October 1, 1984. On September 2, 1983, during attempts to synchronize the turbine to the grid, a turbine overspeed trip occurred resulting in a reactor scram. Some wiring problems and a bad circuit card were found in'the turbine control system and replaced. The reactor was returned to operation that same day and the generator was first synchronized to the grid at 2201, September 3, 1983. Various BOC 9 startup testing was performed and will continue until 100% power is achieved. The BOC turbine

- trip testing was performed on September 4, 1983, which required tripping the turbine and generator off line for approximately 1.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />.

On September 12, 1983 at 1632, a failure of Motor Control Center (MCC) "A" resulted in a turbine trip and a reactor scram.- The control center was repaired and the plant was returned to operation on September 14, 1983.

On September 17, 1983, the reactor was manually scrammed to begin a short maintenance outnge. A HPCI vacuum breaker (HPCI to torus) was discovered leaking during surveillance testing earlier during the week and required a shut down of the plant to repair. The problem vacuum breaker was removed and blanked off. Redundant vacuum breakers in the system allow normal system

-operation with this valve removed. The valve will be repaired and installed at the next extended outage. The plant returned to operation on September 18, 1983.

The plant continued with normal operation the remainder of the month. Full power operation was achieved on September 26, 1983 for the first time for Cycle 9.

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COOPER NUCLEAR STATION Nebraska Public Power District " "

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CNSS830621 October 6, 1983 Director, Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Subject:

Monthly Operation Status Report for September 1983 Docket No. 50-298 Gentlemen:

Enclosed for your information and use is the Cooper Nuclear Station Monthly Operating Status Report for September 1983. The report includes Operating Status, Average Daily Unit Power Level, Unit Shutdown data, and a Narrative Summary of Operating Experience.

Should you have any comments or require additional information regarding this report, please contact me.

Sincerely, W

P. V. Thomason Division Manager of Nuclear Operations PVT:lb Enclosure cc: G. D. Watson w/ enc.

A. C. Gehr w/ene.

J. T. Collins w/ enc.

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