ML20091K473

Monthly Operating Rept for Apr 1984

ML20091K473
Person / Time
Site:	Cooper
Issue date:	04/30/1984
From:	Salisbury J, Thomason P NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
CNSS840183, NUDOCS 8406070096
Download: ML20091K473 (5)

Text

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., e-OPERATLNG DATA REPORT DOCKET NO. 050-0298 DATE 5-3-84 COMPLETED BY J. K. Salisbury TELEPHONE 402-825-3811 OPERATING STATUS Notes -

I; Unit Name:

Cooper Nuclear Station

2. Reporting Period:

April, 1984

3. Licensed Thermal Fawer (MWt):

2381 836

4. Nameplate Rating (Gross MWe):

778

5. Design Electrical Rating (Net MV 787

6. Maximum Dependable Capacity Wross MWe):

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 719.0 2,903.0 86,208.0 II. Hours in Reporting Period

12. Number Of Hours Reactor Was Critical 522.0 2,680.0 69,683.0

13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

14. Hours Generator On-Line 498.2 2,638.8 68,557.I

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 802.719.0 5.171.847.0 135.685.005.0

- 17. Gross Electrical Energy Generated (MWH) 263,000.0_

1,738,871.0 43,145,226.0-

18. Net Electrical Energy Generated (MWH) 252.349.0 1.665.554.0 41.582.213.0

19. Unit Service Factor 69.3 90.9 79.5

20. Unit Availability Factor 69.3 90.9 79.5

21. Unit Capacity Factor (Using MDC Net) 45.9 75.1 63.1

22. Unit Capacity Factor (Using DER Net) 45.1 73.7 62.0 7.7 3.1 3.8

.23. Unit Forced Outage Rate

' 24. Shutdowns Scheduled Oser Next'6 Months (Type. Date.and Duration of Each1:

1984 Refueling and Maintenance, October 1, 1984 7 months

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

-26. Units in Test Status (Prior to Commercial Operationi:

Forecast Achiesed INITIA L CRITICA LITY INITIAL ELECTRICITY COMMERCIAL OPER ATION d

eQ k

8406070096 840430 iI PDR ADOCK 05000298 PDR (9/77 #

R

e AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-298 UNIT CNS DATE 5-3-84 COMPLETED BY J. K. Salisbury 402-825-381i' TELEPHONE MONDI April, 1984 DAY-AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-NetI (MWe-Net) 517 496-g 37 2

662 gg 495 y

689 39 426 0

4 686 20 5

685 21 305

._ 6 641 22 394 7

28 463 23 8

0 488 24 9

0 25 483 486 10 0

26 11 0

27 483 12 0

,3 485 0

356 13 29 14 169 487 30 15 457 3

16 535 INSTRUCDONS On this format, list the average daily unit power levelin MWe Net for each day in the reporting month. Compute to the nearest whole megawatt.

(9/77)

4 9

050-298 DOCKET NO.

UNITSilU1 DOWNS AND' POWER REDUCTIONS UNIT N AME CNS DATE 5-3-84 COMPLETED BY J.K.

Salishury REPORT MONTil April TELEPHONE 402-825-3811 l

.! ?

Y licensee

,E v, Cause & Corrective g

No.

Date i

Eg W-2s5 Event gy g3 Action to t-

$E 3 ;5 =!

Report

• mO u

Prevent Recurrence o

.e u

84-3 840407 S

179.3 B

2 NA NA NA' Maintenance Outage 84-5 840419 F

41.5 A

2 NA NA NA Loss of both SBGT charcoal beds resulting in a loss of Secondary Containtnent required a controlled shutdown. A manual scram was initiated at 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br />. Charcoal in both beds was replaced and functionally tested. The plant then

~

returned to service.

i l

3 4

i 2

l F: Forced Reason:

Method:

Exhibit G Instructions S: Scheduled A Equipment Failure (Explain)

I-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 (NUREG-l D Regulatory Restriction 4 Other (Explain) 0161)

E Operator Training & License Examination

(

F-Administrstive 5

G-Operational Error (Explain)

Exhibit I Same Source

('7/77)

Il-Other (Explain) e

r

.o

~e Operations Narrative Cooper Nuclear Station April, 1984 The p1' ant opera'ted.the month of April with one (1) scheduled shutdown on April 7 and one;(1) unscheduled shutdown on April 19.

The scheduled shutdown was required for maintenance. The reactor was manually scrammed at 0538 on April 7.

The plant was placed back in service on April

'14.

The unscheduled shutdown on April 19 was indirectly caused by a fire

- protection system water hammer. This unanticipated water hammer inadvertently forced the clappers of the SBGT automatic deluge system valves open. This

' occurrence quenched the SBGT charcoal beds with water, rendering the SBGT system inoperative and thus losing secondary containment. As required by Technical Specifications, procedures were initiated to shutdown. The wet charcoal beds were replaced with dry charcoal and tests were performed to insure-their functional capabilities. Upon regaining SBGT operability on April 20, procedures were implemented to bring the plant back into service.

The plant was placed on-line on April 21.

A capacity factor of 45.9 was achieved for the month of April.

i

. -. _,., _ _ _,. _ _ _ _ _ - ~ _ _

f JL.,

s COOPER NUCLEAR STATloN gx "d" *"#Wi""^T^ "'"

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Nebraska Public Power District t,o s

CNSS840183 May 3, 1984 Director, Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, D.C.

20555

Subject:

Monthly Operation Status Report for April 1984 Docket No. 50-298 Centlemen:

Enclosed for your information and use is the Cooper Nuclear Station Monthly Operating Status Report for April 1984. 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, SK j%w P. V. Thomason Division Manager of Nuclear Operations PVT:lb Enclosure cc:

G. D. Watson w/ enc.

}

A. C. Gehr w/ enc.

J. T. Collins w/ene.

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