ML20127B304

Monthly Operating Rept for Dec 1992 for Cooper Nuclear Station

ML20127B304
Person / Time
Site:	Cooper
Issue date:	12/31/1992
From:	Gardner R, Kernes E NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
CNSS938511, NUDOCS 9301120236
Download: ML20127B304 (5)

Text

.

4 t

7%,

CooPEA NUCLEAR ST ATON

b.,,, NM h:d1' Nebraska Publ.ic Power District I

P.O. box 98 BRoWNVluE. NEBRASKA 68321 3

TELE MONE (mK53811 rAn--i mm m=mmmmunswe====o __ _ __

p% ns w va

= = =

=.-- -- =-- m.

m..

- = = = = = - - -

CNSS938511 January 7, 1993 Document Control Desk U.

S. Nuclear Regulatary Commission Washington, D.G.

20555

Subject:

Monthly operating Status Report for December, Docket No. 50-298.

Gentlemen:

Enclosed for your information and use is the Cooper Nuclear Station Monthly Operating Status Report for December 1992. The report includes Operating Status, Average Daily Unit Power Level, Unit Shutdown Data and 3 Narrative Summary of Operating Experience.

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

bh L. Gardner Plant Manager RLC:EAK;dls Enclosures ec:

G. D. Watson w/ enclosures R. D. Martin w/ enclosures 190002 f

9301120236 921231 e

DR ADOCK 0500 8

i gl w Si,dd3 M I h b,x n $ 4i a,S M nmqm-n mpmy gn.gynn;pbsf.Iygb!m)Yygggy.nwnn.nnmn,nwy bbaJElf

,37r n.

flddA b ms12 M igtR;2 A lsabn&di W d

_.=_t=.&sq

, ? l--

1 OPERATING DATA REPORT DOCY2T FO.

050 0298-UNIT CNS DATE January 7-.

1993

-OPERATING STATUS TELEPHONE

-(402) 825 5396 1.

~ Unit Name:

Cooper Nuclear Station Notes 2

Reporting Period:

December 1992

. 3.

Ucensed Thermal Power (MWt):

2381 4.

Nameplate Rating (Gross MWe):

836 S.

Design Electrical Rating (Net MWe): 778 6.

Maximum Dependable Capacity (Gross MWe): 787 7.

Maximurn Dependable Capacity (Net MWe):

764 8.

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

g.

Power Level To Which Restricted, if Any (Net MWe):

10.

Reasons For Restriction,if Any:

This Month Yr.-to-Data Cumulative 11.

Hours in Reporting Period -

-744.0 8.784.0 162.217.0 -

12.

Number of Hours Reactor Was Critical 744.0 8J66.7 -

124.967.0

- 13.

Reactor Reserve Shutdown Hours 0.0 0.0 0.0 14.

Hours Generator On-Une 7440 8.436.4 123.208.9 15 Unit Reserve Shutdown Hours 0.0 0.0 0.0 16.

Gross Thermal Energy Generated (MWH) 1.730.664.0 19.287.912.0 252.843.964.0 -

17.

Gross Electric Energy Generated (MWH) 578.785.0

-6.420.830.0 81.990.982.0

< 18.

Net Electric Energy Generated (MWH) 561.078.0-6.227.929.0 79.158.316.0

1g.

Unit Service Factor 100.0 96.0.

= 76.0 20.

Unit Availability Factor 100.0 96.0 76.0-21.

Unit Capacity Factor (Using MDC Net)

-- 98.7 92.8 63.9 22.

Unit Capacity Factor (Using DER Net) 96 9 91.1

-62.7 23.-

Unit Forced Outage Rate-0.0.

1.5 -

4.3 24.

Shutdown Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

A nianned refuelina/ maintenance outaqe of approximately 56 days is scheduled for March 7.1992.

25.

If Shut Down At End of Report Period, Estimated Date of Startup: N/A 26.

Units in fest Status (Prior to Commercial Operation):

Forecast Achieved INITIAL CRITICAUTY INITIAL ELECTRICITY COMMERCIAL OPERATION -

-q ;

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

050-0298 UNIT CNS DATE January 7, 1993 TELEPHONE (402) 825-5396

^

MONTH December 1992 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 772 17 771-2 772 18 771 3

771 19 771 4

770 20 765 5

770 21 772 6

760 22 772 7

771 23

=.

770 8

771 24 770 9

771 25 771-10 772 26 771 11 771 27 760 12 763 28 771 13 601 29 770 14 712 30 650 15 772 31 636' 16 771 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.

UN!Y SMUTDOWWS AMD POWER REDUCTIONS

' DOCKET NO.

050-0298 =

UNIT NAME Cooper Nuclear Station DATE January 7.1993 COMPLETED BY.

E. A. Kemes TELEPHONE (402) 825-5396 REPORT MONTH December 1992 Method Of Ucensee Cause & Corrective Duration Shutting Event System' Component' Action to No.

Date Type' (Hours) -

Reason #

Down Reactor' Report Code Code Prevent Recurrence

{

DROP tN PCPNER FOR ROD ADJUSTMENTS 92-7 12/13/92 S,

O H

5 N/A-DROP IN POWER FOR 24-HOUR LCO DUE TO 92-8 12/30/92 F

_O F

5 92-19 BOTH D!ESEL GENERATORS BE!NG INOP.

l l

l 1

F: Forced 2

Reason:

3 Method:

4-Exhibit G - instructions for 1 - Manual Preparation of Data Entry S: Schedufed

' A-Equ;pment Faiture (Explain) 8 - Maintenance or Test 2 - Manual Scram Stwets for Ucensee Event C - Refueling 3-Automatic Scram Report (LER) File (NUREG41c13 0 - Regulatory Restnction 4 - Continued E Operator Training & Ucense Examination 5 - Reduced Load 5 Eahibit I-Same Sour::e

F - Administrative '

6 - Other G - Operational Error (& plain)

H - Other (Exp!ain)

^ ~ ^ ~

L i

I 6.

1 5

OPERATIONS NARRATIVE COOPER NUCLEAR STATION December 1992 Coopar Station operated at full power during December 1-12. ' Control rod adjustments were performed on December 13 and 14 at reduced power. Afte a flow ramp, the plant operated at full power from-December 15 *o 29.

lI On December 30, both Diesel Generators were declared inoperable due to seismic concerns with control circuits for associated breaker lockout -

relays. This placed the plant in a 24-hour LCO and a power. reduction-was initiated. At approximately 60% power one. diesel generator was y

declared operable, terminating the power reduction. After performing a rod adjustment and scram timing, the plant returned to 100% power, Cooper Station achieved a 98.7% capacity factor for the month of December.

1 e

i