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OPERATING DATA REPORT.. . , - ... '50-315DOC:GT NO.3-5-80DATE

COMPLETED gy W. T. Gillett .TELE?-iONE 616-a6%5901

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O?IRATING STATUS .

Donald C. Cook 1 Notes3, en3 3,m.. ' ' '

2. Repor:ing Period:February 1980_

3250 ' ].

3. LicensedTher==! Power (MWr): 1089 . i4. Nameplate Rating (Gross MW ): 1054

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S. Design Ele:: im! R:da;(Net MWe): |10806. Maximum Depend:ble Cap:dty (Gross MWe): l10447. Maxirnum Dependable C:p: city (Net Mwe):S. If Changes Oc=:rin Capz:I:y Ratings (Items Number 3 Through 7) Since Last Report. Give Reasons:

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9. Power Level To Whi:h R=s:ri::ed.If Any (Net Mwe):10. Reasons For Restd:tio .s.If Any:

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This Month Yr. to.Dat- Cu=u!:nve...

696 1440 45,26411. Hou:s in Reporting Pedad 696 1042.8 34,004.b12. Number of Hours Re2::or was Criti s!

0 0 46313. Re:c:or Reserve Shu:down Hou:s 696 1036.6 33,119.814. Houn Genestar On.Line

0 0 32115. Unit Reserve Shutdown Ho=r

2,209.403 3.190,053 97.256.35816. Gross Therms! Enegy Gener:ted (MWH)17. Cross Elec.:i=! Enegy Gene = red (MWH) 734,460 __,

1,057,970 30,215,310708,795 1,020,062 29,017,376

18. Net Ele:: deal Energy Genen:ed g, wn) 100 /Z.0 - 75.019. Unit Servi:: F:c:or

100 72.0 75.020. Unic Av:il:bi!!:y F:c:or 97.5 67.8 67.021. Unit C:pacity F:::or(Using MDC Net)

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96.6 67.2 62.222. Unit Capscity F=::or (Using DER Net)

0 28.0 8. _623. Unic Forced Ou::Se R:te24. Shutdowns Scheduled Over Nex: 6 Months (Type. Date.:nd Du : tion of Each):

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25. If Shut Down At End Of Report Period.Estimered Date of Startup:25. Units in Test St:tus (Prior to Ce= mere!al Oper: tion): Force:st Achieved

INITIAL CRITICALITY~~

INITIAL ELECTR:C:TYCOMMERC:AL OPER ATiCN

tof 7 38204070314 800306PDR ADOCK 05000315PDRR

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AVERAGE DAILY UNIT POWER LEVEL-

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DOCKET ~NO. 50-315-' ''-

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UNIT 1

DATE 3-4-80

COMPLETED BY W. T. Gillett

TELEPHONE 616-465-5901

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MONTH February 1980,

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DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL(MWE-Net) (MWe-Net)

1 1041 17 655<,

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2 1032 18 960

3 1044 19 1038'

4 1044 20 1045,,

'S 1043 21 1046

6 1037 22 1046,

-7 1039 23 1035

8 1045 24 1034,_

9 1035 25 1046

10 1045 26 1045,

11 1046 27 1047

12 1044 28 1043,

13 1044 29 1043

14 1041 W15 1046 W16 827

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[ INSTRUCTIONSOn 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.- -. .. . .. . ..- .-_-. . . . - - - . . - . . _ . . -. . - - - . . -

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- iUNITSilUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-315

UNIT NAhlE 0.C. Cook-Unit 1*

DATE 3-6-80REPORT Af0N TH February, 1980 00hlPLETED BY

B.A. SvenssonTELEPil0NE (616) 465-5901'

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.3 == ='A Licensee g r,, e ., Cause & Co icciive5c ri ,.

;, 3 _e E n57,cgy Event ay 83 Ac. tion toNo. Date g gg gH $5 5 j;5g Report # (NC fU Prevent Recurrence

a

158 800216 F 0 B b N.A. CH ZZZZZZ Reactor power reduced to 62% topermit removal of the west mainfeed pump curbine from service toinvestigate cause for oscillation-

in pump and turbine 5 ration. Re-actor power returneu o 100% 800218.

I 2 3 4F: Forced Reason: hiethod: Exhibit G -InstructionsS: Schetinted A-Equipment Failme (Explain) 1.hlanual for Preparation of Data

ll hlaintenance of Test 2 klanual Scram. Ent y Sheets for 1.icenseeC Refueling 3. Autmnatic Scram. livent Repmi (1.ER) File INilREG-D-Regulatory Restriction 4 Other (Explain) 0161)E-Opesator reaining & License lixaminationF Administrative 5G Operational Eeror (Explain) Exinbit 1 - Same Somce

19/77) ll-Other (Explain)

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Docket No.: 50-315'

Unit Name: D. C. Cook Unit #1.. .Completed By: R. S. Lease

Telephone: (616)465-5901Date: March 11, 1980Page: 1 of 2

| MONTHLY OPERATING EXPERIENCES -- FEBRUARY,1980 |

| Highlights |:

The Unit operated at 100% power the entire reporting period exceptas detailed in the summary.

Total electrical generation for the month was 734,460 Mwh.

| Summary 1:

2/1/80 -- Power was reduced to 90% for testing of turbine controlvalves. Total time below 100% was 5.5 hours.

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2/6/80 -- Loop 2 Tavg and 6T signals were defeated and the bistablestripped for a 5.75 hour period for replacement of acalibration potentiometer.

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2/9/80 -- Power was reduced to 90% for testing the turbine controlvalves. Total time below 100% was 4 hours.

2/11/80 -- East Component Cooling Water puro was inoperable for a2 hour period for bearing inspec ion.

2/15/80 -- Safeguards Fan HV-AES-1 was inoperable for a 4 hour periodfor replacement of HEPA filters.

2/16/80 -- Power was reduced to 90% for testing of turbine controlvalves. Total time below 100% power was 3 hours.

Power was reduced to 65% of a 2 hour ramp starting at1040 hours to remove the West Main Feed Pump from service.This pump had been showing minor vibration problems. Thevibration pattern showed an oscillation between 1 and 2 railsover an 8-minute time span. A balance weight was placedon the pump and it was returned to service at 0145 2-18-80.The Unit was~ returned to 100% power by 1045 the same day.

The balance weight did not help the oscillating. Thisvibration pattern went away 2-29-80. At this time thereis no explanation as to what caused it.

2/17/80 -- The filter paper drive on stack particulite Radiation ,Monitor R-25 failed at 1630 hours. Repairs were madeand this was again retu ned to service at 1350 hours2-24-80.

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'' ~Docket No.: 50-315- .Unit Name: D. C, Cook Unit #1

Completed By: R. S. LeaseTela.nhone: (616) 465-5901

Date: March 11, 1980Page: 2 of 2

2/19/80 -- Power was reduced to 96% over a 3.25 hour period dueto the West Main Feed Pump indicating excessive vi-bration. It was determined that the vibration instrumentwan in error. Power was returned to 100%.

Containment area Radiation Monitor R-2 was inoperablefor a 30 hour period starting at 1725 hours for necessaryrepairs.

| Safeguards Fan HV-AES-1 was removed from service at 0815hours. Tt.is was for replacement of the charcoal filter.This unit was returned to operable status at 1710 hours2-23-80.

2/22/80 -- Control Room air conditioning unit 1-HV-ACRA-2 wasinoperable for 3 days, starting at 0327 hours. This*was for repairs of a safety valve on the expansiontank.

2/23/80 -- Power was reduced to 90% for testing the turbine valves.Total time below 100% was 3 hours.

2/24/80 -- Power was reduced to 97% at 0810 hours for a moderatortemperature coefficient test. Power was returned to100% by 1740 hours the same day.

2/26/80 -- The AB Emergency Diesel Generator was inoperable fora 6 hour period for cleaning of switch gear.

This unit experienced its normal condenser tube leak problems, andcondenser halfs were out of service periodically throughout thereporting period.

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DOCKET NO. 50 - 315UNIT NAME D. C. Cook - Unit No. 1DATE 3-6-80COMPLETED BY B. A. SvenssonTELEPHONE (616) 465-5901PAGE 1 of 1

MAJOR SAFETY-RELATED MAINTENANCE'

FEBRUARY,1980

M-1 No. 4 steam generator blowdown regulating valve, DRV-341, had abody to bonnet leak. Replaced all valve gaskets and had valveretested.

M-2 The HEPA filter for ESF ventilation system fan HV-AES-1, has a highDP. Replaced HEPA filter and had unit tested.

C&I-l ZRV-014, the fire protection water supply to ventilation Unit 1-AES-1,.would not open manually when the actuation button was depressed.

* Time delay relay 62-ESS-1 was found energized, preventing the sole-noid valve from energizing and opening ZRV-D14. A 50 microfaradcapacitor utilized as a filter in the power supply circuit failed.The capacitor was replaced with a spare and an operational test ofthe control circuit was performed.

C&I-2 ZRV-023, the fire protection water supply to the control roompressurizer / cleanup filter system (1-HV-ACRF), would nct open manu-ally when the actuation button was depressed. Time delay relay62 CRPF was energized which prevented the solenoid valve from ener-gizing. The circuit board was replaced and an operability test wasperformed to verify correct operation.

C&I-3 C-4, overpower delta T block rod withdrawal and turbine runoack,was received at 99% reactor power operation. ...a resistance tovoltage converter output voltages was measurt J for comparisonson all four protection sets. Loop No. 4 indicated the highestAT% power value, and was producing the annunciator actuation. Thehot leg RTD terminations in the rack were found loose. The ter-minations were tightened and the AT% power signal decreased 7% ofpower Loop 4 was returned to normal operation.

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