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| issue date = 09/30/1996
| issue date = 09/30/1996
| title = Monthly Operating Rept for Sept 1996 for DC Cook Nuclear Plant Unit 1.W/961002 Ltr
| title = Monthly Operating Rept for Sept 1996 for DC Cook Nuclear Plant Unit 1.W/961002 Ltr
| author name = MINOR J W, RUSSO M E, SAMPSON J R
| author name = Minor J, Russo M, Sampson J
| author affiliation = AMERICAN ELECTRIC POWER CO., INC.
| author affiliation = AMERICAN ELECTRIC POWER CO., INC.
| addressee name =  
| addressee name =  
Line 16: Line 16:


=Text=
=Text=
{{#Wiki_filter:CATEGORY1REGULATOR INFORMATION DISTRIBUTION STEM(RIDE)ACCESSION NBR:9610100277 DOC.DATE:
{{#Wiki_filter:CATEGORY 1 REGULATOR INFORMATION DISTRIBUTION STEM (RIDE)
96/09/30NOTARIZED:
ACCESSION NBR:9610100277           DOC.DATE: 96/09/30        NOTARIZED: NO FACIL 50-'315 Donald C. Cook Nuclear Power Plant, Unit 1, Indiana DOCKET  I M  05000315 AUTH.NAM(           AUTHOR AFFILIATION MINOR,J.'W.   -'merican         Electric Power Co., Inc.
NOFACIL50-'315DonaldC.CookNuclearPowerPlant,Unit1,IndianaMAUTH.NAM(
RUSSOFM.E.           American Electric Power Co., Inc.
AUTHORAFFILIATION MINOR,J.'W.
SAMPSON,J.R.         American Electric Power Co., Inc.
-'merican ElectricPowerCo.,Inc.RUSSOFM.E.
RECIP.NAME           RECIPIENT AFFILIATION
AmericanElectricPowerCo.,Inc.SAMPSON,J.R.
AmericanElectricPowerCo.,Inc.RECIP.NAME RECIPIENT AFFILIATION DOCKETI05000315


==SUBJECT:==
==SUBJECT:==
Monthlyoperating reptforSept1996forDCCookNuclearPlantUnit1.W/961002 ltr.DISTRIBUTION CODE:IE24DCOPIESRECEIVED:LTR ENCLSIZE:TITLE:MonthlyOperating Report(perTechSpecs)NOTES:CERECIPIENT IDCODE/NAME PD3-1PDINTERNAL:
Monthly operating rept      for  Sept 1996    for  DC  Cook  Nuclear                  C Plant Unit 1.W/961002       ltr.
AEOD/SPD/RRAB NRR/DRPM/PECB EXTERNALLITCOBRYCEFJHNRCPDRCOPIESLTTRENCL1111111111RECIPIENT IDCODE/NAME HICKMAN,J LECENTERNOACCOPIESLTTRENCL111111110D0UENOTETOALLNRIDS"RECIPIENTS:
DISTRIBUTION CODE: IE24D        COPIES RECEIVED:LTR           ENCL      SIZE:
PLEASEHELPUSTOREDUCEWASTE.TOHAVEYOURNAMEORORGANIZATION REMOVEDFROMDISTRIBUTION LISTSORREDUCETHENUMBEROFCOPIESRECEIVEDBYYOUORYOURORGANIZATION, CONTACTTHEDOCUMENTCONTROLDESK(DCD)ONEXTENSION 415-2083ITOTALNUMBEROFCOPIESREQUIRED:
TITLE: Monthly Operating Report (per Tech Specs)
LTTR9ENCL9I
NOTES:                                                                                             E RECIPIENT            COPIES              RECIPIENT            COPIES ID CODE/NAME          LTTR ENCL          ID CODE/NAME         LTTR ENCL PD3-1 PD                  1    1      HICKMAN,J                1      1                0 INTERNAL: AEOD/SPD/RRAB               1    1          LE CENTER            1      1 NRR/DRPM/PECB             1    1                                1      1 EXTERNAL    LITCO BRYCE J F  H      1    1      NOAC                      1      1 NRC PDR                  1    1 D
'4 rItAmericanElectricP~CookNuclearPlantOneCookPlaceBridgman, Ml491066164655901October2,1996U.S.NuclearRegulatory Commission ATTN:DocumentControlDeskWashington, D.C.20555Gentlemen:
0 U
KPursuanttotherequirements ofDonaldC.CookNuclearPlantUnit1Technical Specification 6.9.1.10, theattachedMonthlyOperating ReportforthemonthofSeptember 1996issubmitted.
E NOTE TO ALL NRIDS" RECIPIENTS:
Respectfully, J.R.SampsonPlantManagerAttachment ZOOO3~c:NRCRegionIIID.R.HahnR.C.CallenS.,HammingINPORecor'dsCenterANINuclearEngineering Department E.E.Fitzpatrick A.A.BlindP.A.BarrettW.G.Smith,Jr.S.J.BrewerD.W.PaulS.H.Steinhart D.L.NobleW.H.SchalkD.G.TurnerB.L.BartlettM.E.Russo'PbiOi00277 9b0930PDRADQCK050003i5PDR C1 N.R.C.OPERATING DATAREPORTDOCKETNO.50-315DATE02/Oct/96 COMPLETED BYJWMinorTELEPHONE 616-465-5901 OPERATING STATUS1.UnitNameD.C.CookUnit12.Reporting PeriodSept1996notes3.LicensedThermalPower(MWt)32504~NamePlateRating(GrossMWe)11525~DesignElectrical Rating(NetMWe)10206~MaximumDependable Capacity(GROSSMWe)10567.MaximumDependable Capacity(NetMWe)10008.IfChangesOccurinCapacityRatings(Itemsno.3through7)SinceLastReportGiveReasons9.PowerLevelToWhichRestricted.
PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 I
IfAny(NetMWe)10.ReasonsForRestrictions.
TOTAL NUMBER OF COPIES REQUIRED: LTTR              9  ENCL      9 I
IfAny:11.12.13.14.15.16.17.18.19.20'1.22.23.24.ThisMo.Yr.toDateCumm.HoursinReporting Period720.06576.0190656.0No.ofHrs.ReactorWasCritical552.96387.0144379.3ReactorReserveShutdownHours0.00.0463.0HoursGenerator onLine546.76366.7142000.8UnitReserveShutdownHours0.00.0321.0GrossTherm.EnergyGen.(MWH)151878519825198419243078 GrossElect.EnergyGen.(MWH)4935406517480136129850 NetElect.EnergyGen.(MWH)4737336283431130961530 UnitServiceFactor75.996.875.3UnitAvailability Factor75.996.875.3UnitCapacityFactor(MDCNet)65.895.668.5UnitCapacityFactor(DERNet)64.593.766.8UnitForcedOutageRate24.13.26.1Shutdowns Scheduled overNextSixMonths(Type,Date,andDuration):
 
RefuelinoutaetobeinFebruar281997foranestimated durationof48days.25.IfShutDownAtEndofReportPeriod,Estimated DateofStartup:26.UnitsinTestStatus(PriortoCommercial Operation):
4
ForecastAchievedINITIALCRITICALITY INITIALELECTRICITY COMMERCIAL OPERATION AVERAGEDAILYPOWERLEVEL(MWe-Net)
 
MONTHDOCKETNO.50-315UNITONEDATE02/Oct/96 COMPLETED BYJWMinorTELEPHONE 616-465-5901 Sept1996DAY96/09/0196/09/0296/09/0396/09/0496/09/0596/09/0696/09/0796/09/0896/09/0996/09/1096/09/1196/09/1296/09/1396/09/1496/09/1596/09/16AVERAGEDAILYPOWERLEVEL883880879878877888884879872877870871884895891891DAY96/09/1796/09/1896/09/1996/09/2096/09/2196/09/2296/09/2396/09/2496/09/2596/09/2696/09/2796/09/2896/09/2996/09/30AVERAGEDAILYPOWERLEVEL8958968968938880000000287886 DOCKETNO"0-315UNITNAME:D.C.CookUnit1COMPLETED BY:M.E.RussoTELEPHONE:
r      I American Electric Cook Nuclear Plant P~
616-697-5100 DATE:October2,1996PAGE:Page1of2MONTHLYOPERATING ACTIVITIES
t            One Cook Place Bridgman, Ml 49106 616 465 5901 October 2, 1996 U.S. Nuclear Regulatory Commission ATTN:       Document Control Desk Washington, D.C. 20555 Gentlemen:
-SEPTEMBER 1996HIGHLIGHTS*
K Pursuant to the requirements of Donald C. Cook Nuclear Plant Unit 1 Technical Specification 6.9.1.10, the attached Monthly Operating Report for the month of September            1996 is submitted.
Theunitenteredthisreporting periodinMode1andstableat86%RTP.AReactortripoccurredSeptember 21,1996at2349ESTasaresultofaspuriousMain'Transformer SuddenOver-Pressure signalmostprobablyinducedbyalightning strike.AdescenttoMode5wascommenced September 24,1996at0020ESTtofacilitate twoSourceRangeDetectorreplacements.
Respectfully, J.R. Sampson Plant Manager Attachment c:     NRC D.R. Hahn Region    III R.C. Callen S.     ,   Hamming INPO Recor'ds        Center ANI Nuclear Engineering Department E.E. Fitzpatrick A.A. Blind P.A. Barrett W.G. Smith, Jr.
Following thedetectormaintenance, theunitwasplacedbackonlineandReactorpowerwasstabilized at88.5%RTPSeptember 30,1996at0257EST.Theunitexitedthisreporting periodinMode1at88.5%RTP.Therewerenochallenges tothepressurizer safetyvalvesorpoweroperatedreliefvalves.Grosselectrical generation forthemonthofSeptember was493540MWH.DETAILS+09-13-9609-21-9609-24-9609-26-9609-27-9609-28-96144516502349002011552007100521592255Commenced powerincreaseto88%RTP.Reactorpowerstabilized at88%RTP.ReactortriponspuriousMainTransformer SuddenOver-Pressure signal.EnteredMode4.Commenced modedescenttofacilitate SourceRangeNuclearInstrumentation detectorreplacements onchannelsN-31andN-32.EnteredMode5.EnteredMode4~EnteredMode3.EnteredMode2.Reactorcritical.
S.J. Brewer D.W. Paul S.H. Steinhart D.L. Noble ZOOO3~              W.H. Schalk D.G. Turner B.L.       Bartlett M.E. Russo
DOCKETNO'-315UNITNAME:D.C.CookUnit1COMPLETED BY:M.E.RussoTELEPHONE:
    'PbiOi00277 9b0930 050003i5 PDR  ADQCK PDR
616-697-5100 DATE:October2,1996PAGE:Page2of2MONTHLYOPERATING ACTIVITIES
 
-SEPTEMBER 1996DETAILS(cont'd)*
C1 N.R.C. OPERATING DATA REPORT DOCKET NO. 50-315 DATE  02/Oct/96 COMPLETED BY    JW Minor TELEPHONE  616-465-5901 OPERATING STATUS
09-29-96013305040607EnteredModel.MainTurbineGenerator paralleled tothegrid.Commenced Reactorpowerascension from11%RTPto30%RTP.09-30-9608071140153018150257Reactorpowerstabilized at30%RTP.Commenced powerascension.
: 1. Unit Name                        D. C. Cook  Unit  1
Reactorpowerstabilized at49.5%RTP.PlacedEastMainFeedpumpinserviceandcommenced powerascension.
: 2. Reporting Period                              Sept 1996 notes
Reactorpowerstabilized at88.5%RTP.*AlltimeentriesaboveareEasternStandardTime(EST).
: 3. Licensed Thermal Power (MWt)                       3250 4 ~     Name Plate Rating (Gross MWe)                 1152 5 ~     Design Electrical Rating (Net MWe)           1020 6 ~     Maximum Dependable Capacity (GROSS MWe) 1056
UNITSHUTDOWNS ANDPOWERREDUCTIONS REPORTMONTH:SEPTEMBER 1996DOCKETNO:UNITNAME:DATE:COMPLETED BY:TELEPHONE:
: 7. Maximum Dependable Capacity (Net MWe)             1000
PAGE:S50-315D.C.COOKUNIT1October2,1996M.E.Russo616-697-5100 Page1of1DURATIONNO.DATETYPEHOURSMETHODOFSHUTTINGLICENSEEDOWNEVENTSYSTEMCOMPONENT CAUSEANDCORRECTIVE ACTIONREASONREACTORREPORTNO.CODECODETOPREVENTRECURRENCE 328092196F173.396-004n/an/aAt2349ESTUnit1receivedaReactortripsignalasaresultof~spuriousMainTransformer SuddenOver-Pressure signalmostprobablyinducedbyalightning strike.Anunrelated SourceRangeNuclearInstrumentation problemrequiredthereplacement ofdetectorN-31.DetectorN-32wasreplacedalsoasanelectiveconservative measure.TheMainGenerator wasparalleled tothegrid092996at0504EST.1F:ForcedS:Scheduled 2Reason:A:Equipment Failure(Explain)
: 8.     If Changes Occur in Capacity Ratings (Items no. 3 through 7) Since Last Report Give Reasons
B:Maintenance orTestC:Refueling D:Regulatory Restriction E:OperatorTrainingandLicenseExamination F:Administrative G:Operational Error(Explain)
: 9. Power Level To Which Restricted.           If Any  (Net  MWe)
H:Other(Explain) 3Method:1:Manual2:ManualScram3:Automatic Scram4:Other(Explain)
: 10. Reasons For Restrictions.           If Any:
ExhibitG-Instructions forpreparation ofdataentrysheetsforLicenseeEventReport(LER)File(NUREG0161)5ExhibitI:SameSource lt~'Cti}}
This  Mo. Yr. to Date      Cumm.
: 11.     Hours  in Reporting Period                720.0        6576.0    190656.0
: 12.     No. of Hrs. Reactor  Was  Critical        552.9        6387.0    144379.3
: 13.     Reactor Reserve Shutdown Hours                0.0          0.0        463.0
: 14.     Hours Generator on Line                    546.7        6366.7    142000.8
: 15.     Unit Reserve Shutdown Hours                    0.0          0.0        321.0
: 16.     Gross Therm. Energy Gen. (MWH)          1518785      19825198    419243078
: 17.     Gross Elect. Energy Gen. (MWH)           493540        6517480    136129850
: 18.      Net Elect. Energy Gen. (MWH)             473733        6283431    130961530
: 19.     Unit Service Factor                          75.9          96.8          75.3 20 Unit Availability Factor                          75.9          96.8          75.3
    '1.
Unit Capacity Factor (MDC Net)               65.8          95.6          68.5
: 22. Unit Capacity Factor (DER Net)                   64.5          93.7          66.8
: 23. Unit Forced Outage Rate                          24.1          3.2            6.1
: 24. Shutdowns Scheduled over Next Six Months (Type, Date,and Duration):
Refuelin outa e to be in Februar 28 1997 for an estimated duration of 48 days.
: 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
 
AVERAGE DAILY POWER LEVEL  (MWe-Net)
DOCKET NO.         50-315 UNIT                  ONE DATE          02/Oct/96 COMPLETED BY    JW Minor TELEPHONE  616-465-5901 MONTH        Sept 1996 AVERAGE DAILY                        AVERAGE DAILY DAY      POWER LEVEL            DAY          POWER LEVEL 96/09/01        883            96/09/17              895 96/09/02        880            96/09/18              896 96/09/03        879            96/09/19              896 96/09/04        878            96/09/20              893 96/09/05        877            96/09/21              888 96/09/06        888            96/09/22                0 96/09/07        884            96/09/23                0 96/09/08        879            96/09/24                0 96/09/09        872            96/09/25                0 96/09/10        877            96/09/26                0 96/09/11        870            96/09/27                0 96/09/12        871            96/09/28                0 96/09/13        884            96/09/29              287 96/09/14        895            96/09/30              886 96/09/15        891 96/09/16        891
 
DOCKET NO"       0-315 UNIT NAME:       D.C. Cook  Unit  1 COMPLETED BY:   M.E. Russo TELEPHONE:       616-697-5100 DATE:           October 2, 1996 PAGE:           Page  1 of 2 MONTHLY OPERATING  ACTIVITIES   SEPTEMBER   1996 HIGHLIGHTS*
The  unit entered this reporting period in    Mode 1 and  stable at  86%
RTP.
A Reactor trip occurred September 21, 1996 at 2349 EST as a result of a spurious Main'Transformer Sudden Over-Pressure signal most probably induced by a lightning strike.
A descent to Mode 5 was commenced September 24, 1996 at 0020 EST to facilitate  two Source Range Detector replacements.       Following the detector maintenance, the unit was placed back on line and Reactor power was  stabilized at 88.5% RTP September 30, 1996 at 0257 EST.
The  unit exited this reporting period in Mode 1 at 88.5% RTP.
There were no challenges    to the pressurizer safety valves or power operated  relief  valves.
Gross  electrical generation for the    month of September  was 493540 MWH.
DETAILS+
09-13-96      1445      Commenced  power increase  to 88% RTP.
1650      Reactor power stabilized at    88% RTP.
09-21-96      2349      Reactor trip on spurious Main Transformer Sudden Over-Pressure signal.
09-24-96      0020      Entered  Mode 4. Commenced mode  descent to facilitate  Source Range Nuclear Instrumentation detector replacements on channels N-31 and N-32.
1155      Entered  Mode 5.
09-26-96      2007      Entered Mode  4 ~
09-27-96      1005      Entered  Mode 3.
09-28-96      2159      Entered  Mode 2.
2255      Reactor  critical.
 
DOCKET  NO'-315 UNIT NAME:       D.C. Cook  Unit  1 COMPLETED BY:   M.E. Russo TELEPHONE:       616-697-5100 DATE:           October 2, 1996 PAGE:           Page 2  of  2 MONTHLY OPERATING  ACTIVITIES   SEPTEMBER 1996 DETAILS  (cont'd)*
09-29-96      0133      Entered Mode l.
0504    Main Turbine Generator  paralleled to the grid.
0607    Commenced Reactor power  ascension  from  11% RTP to 30% RTP.
0807    Reactor power  stabilized at  30% RTP.
1140    Commenced power ascension.
1530    Reactor power  stabilized at 49.5% RTP.
1815      Placed East Main Feedpump in service and commenced  power ascension.
09-30-96      0257    Reactor power  stabilized at  88.5% RTP.
* All time entries  above are Eastern Standard Time (EST).
 
S UNIT SHUTDOWNS AND  POWER REDUCTIONS                                DOCKET NO:       50-315 UNIT NAME:       D.C. COOK UNIT 1 REPORT MONTH: SEPTEMBER 1996                                  DATE:           October 2, 1996 COMPLETED BY:   M.E. Russo TELEPHONE:      616-697-5100 PAGE:            Page  1 of 1 METHOD OF SHUTTING    LICENSEE DURATION            DOWN        EVENT      SYSTEM COMPONENT    CAUSE AND CORRECTIVE ACTION NO. DATE    TYPE      HOURS      REASON  REACTOR      REPORT NO. CODE  CODE          TO PREVENT RECURRENCE 328  092196    F        173.3                            96-004      n/a    n/a        At 2349 EST Unit 1 received a Reactor trip signal as a result of ~
spurious Main Transformer Sudden Over-Pressure signal most probably induced by a lightning strike. An unrelated Source Range Nuclear Instrumentation problem required the replacement of detector N-31.
Detector N-32 was replaced also as an elective conservative measure.
The Main Generator was paralleled to the grid 092996 at 0504 EST.
1                2                                    3                                                  5 F: Forced        Reason:                              Method:            Exhibit G  Instructions        Exhibit  I:   Same S: Scheduled     A: Equipment   Failure (Explain)     1: Manual          for preparation of data                      Source B:   Maintenance or Test              2: Manual Scram    entry sheets for Licensee C:   Refueling                       3: Automatic Scram Event Report (LER) File D:   Regulatory Restriction           4: Other (Explain) (NUREG 0161)
E:   Operator Training and License Examination F:   Administrative G:   Operational Error (Explain)
H:   Other (Explain)
 
l
    't ~
C ti}}

Latest revision as of 01:11, 4 February 2020

Monthly Operating Rept for Sept 1996 for DC Cook Nuclear Plant Unit 1.W/961002 Ltr
ML17333A589
Person / Time
Site: Cook American Electric Power icon.png
Issue date: 09/30/1996
From: Minor J, Russo M, Sampson J
AMERICAN ELECTRIC POWER CO., INC.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9610100277
Download: ML17333A589 (10)
v • d • e


Text

CATEGORY 1 REGULATOR INFORMATION DISTRIBUTION STEM (RIDE)

ACCESSION NBR:9610100277 DOC.DATE: 96/09/30 NOTARIZED: NO FACIL 50-'315 Donald C. Cook Nuclear Power Plant, Unit 1, Indiana DOCKET I M 05000315 AUTH.NAM( AUTHOR AFFILIATION MINOR,J.'W. -'merican Electric Power Co., Inc.

RUSSOFM.E. American Electric Power Co., Inc.

SAMPSON,J.R. American Electric Power Co., Inc.

RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

Monthly operating rept for Sept 1996 for DC Cook Nuclear C Plant Unit 1.W/961002 ltr.

DISTRIBUTION CODE: IE24D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: Monthly Operating Report (per Tech Specs)

NOTES: E RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD3-1 PD 1 1 HICKMAN,J 1 1 0 INTERNAL: AEOD/SPD/RRAB 1 1 LE CENTER 1 1 NRR/DRPM/PECB 1 1 1 1 EXTERNAL LITCO BRYCE J F H 1 1 NOAC 1 1 NRC PDR 1 1 D

0 U

E NOTE TO ALL NRIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 I

TOTAL NUMBER OF COPIES REQUIRED: LTTR 9 ENCL 9 I

4

r I American Electric Cook Nuclear Plant P~

t One Cook Place Bridgman, Ml 49106 616 465 5901 October 2, 1996 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

K Pursuant to the requirements of Donald C. Cook Nuclear Plant Unit 1 Technical Specification 6.9.1.10, the attached Monthly Operating Report for the month of September 1996 is submitted.

Respectfully, J.R. Sampson Plant Manager Attachment c: NRC D.R. Hahn Region III R.C. Callen S. , Hamming INPO Recor'ds Center ANI Nuclear Engineering Department E.E. Fitzpatrick A.A. Blind P.A. Barrett W.G. Smith, Jr.

S.J. Brewer D.W. Paul S.H. Steinhart D.L. Noble ZOOO3~ W.H. Schalk D.G. Turner B.L. Bartlett M.E. Russo

'PbiOi00277 9b0930 050003i5 PDR ADQCK PDR

C1 N.R.C. OPERATING DATA REPORT DOCKET NO. 50-315 DATE 02/Oct/96 COMPLETED BY JW Minor TELEPHONE 616-465-5901 OPERATING STATUS

1. Unit Name D. C. Cook Unit 1
2. Reporting Period Sept 1996 notes
3. Licensed Thermal Power (MWt) 3250 4 ~ Name Plate Rating (Gross MWe) 1152 5 ~ Design Electrical Rating (Net MWe) 1020 6 ~ Maximum Dependable Capacity (GROSS MWe) 1056
7. Maximum Dependable Capacity (Net MWe) 1000
8. If Changes Occur in Capacity Ratings (Items no. 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 Mo. Yr. to Date Cumm.

11. Hours in Reporting Period 720.0 6576.0 190656.0
12. No. of Hrs. Reactor Was Critical 552.9 6387.0 144379.3
13. Reactor Reserve Shutdown Hours 0.0 0.0 463.0
14. Hours Generator on Line 546.7 6366.7 142000.8
15. Unit Reserve Shutdown Hours 0.0 0.0 321.0
16. Gross Therm. Energy Gen. (MWH) 1518785 19825198 419243078
17. Gross Elect. Energy Gen. (MWH) 493540 6517480 136129850
18. Net Elect. Energy Gen. (MWH) 473733 6283431 130961530
19. Unit Service Factor 75.9 96.8 75.3 20 Unit Availability Factor 75.9 96.8 75.3

'1.

Unit Capacity Factor (MDC Net) 65.8 95.6 68.5

22. Unit Capacity Factor (DER Net) 64.5 93.7 66.8
23. Unit Forced Outage Rate 24.1 3.2 6.1
24. Shutdowns Scheduled over Next Six Months (Type, Date,and Duration):

Refuelin outa e to be in Februar 28 1997 for an estimated duration of 48 days.

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

AVERAGE DAILY POWER LEVEL (MWe-Net)

DOCKET NO. 50-315 UNIT ONE DATE 02/Oct/96 COMPLETED BY JW Minor TELEPHONE 616-465-5901 MONTH Sept 1996 AVERAGE DAILY AVERAGE DAILY DAY POWER LEVEL DAY POWER LEVEL 96/09/01 883 96/09/17 895 96/09/02 880 96/09/18 896 96/09/03 879 96/09/19 896 96/09/04 878 96/09/20 893 96/09/05 877 96/09/21 888 96/09/06 888 96/09/22 0 96/09/07 884 96/09/23 0 96/09/08 879 96/09/24 0 96/09/09 872 96/09/25 0 96/09/10 877 96/09/26 0 96/09/11 870 96/09/27 0 96/09/12 871 96/09/28 0 96/09/13 884 96/09/29 287 96/09/14 895 96/09/30 886 96/09/15 891 96/09/16 891

DOCKET NO" 0-315 UNIT NAME: D.C. Cook Unit 1 COMPLETED BY: M.E. Russo TELEPHONE: 616-697-5100 DATE: October 2, 1996 PAGE: Page 1 of 2 MONTHLY OPERATING ACTIVITIES SEPTEMBER 1996 HIGHLIGHTS*

The unit entered this reporting period in Mode 1 and stable at 86%

RTP.

A Reactor trip occurred September 21, 1996 at 2349 EST as a result of a spurious Main'Transformer Sudden Over-Pressure signal most probably induced by a lightning strike.

A descent to Mode 5 was commenced September 24, 1996 at 0020 EST to facilitate two Source Range Detector replacements. Following the detector maintenance, the unit was placed back on line and Reactor power was stabilized at 88.5% RTP September 30, 1996 at 0257 EST.

The unit exited this reporting period in Mode 1 at 88.5% RTP.

There were no challenges to the pressurizer safety valves or power operated relief valves.

Gross electrical generation for the month of September was 493540 MWH.

DETAILS+

09-13-96 1445 Commenced power increase to 88% RTP.

1650 Reactor power stabilized at 88% RTP.

09-21-96 2349 Reactor trip on spurious Main Transformer Sudden Over-Pressure signal.

09-24-96 0020 Entered Mode 4. Commenced mode descent to facilitate Source Range Nuclear Instrumentation detector replacements on channels N-31 and N-32.

1155 Entered Mode 5.

09-26-96 2007 Entered Mode 4 ~

09-27-96 1005 Entered Mode 3.

09-28-96 2159 Entered Mode 2.

2255 Reactor critical.

DOCKET NO'-315 UNIT NAME: D.C. Cook Unit 1 COMPLETED BY: M.E. Russo TELEPHONE: 616-697-5100 DATE: October 2, 1996 PAGE: Page 2 of 2 MONTHLY OPERATING ACTIVITIES SEPTEMBER 1996 DETAILS (cont'd)*

09-29-96 0133 Entered Mode l.

0504 Main Turbine Generator paralleled to the grid.

0607 Commenced Reactor power ascension from 11% RTP to 30% RTP.

0807 Reactor power stabilized at 30% RTP.

1140 Commenced power ascension.

1530 Reactor power stabilized at 49.5% RTP.

1815 Placed East Main Feedpump in service and commenced power ascension.

09-30-96 0257 Reactor power stabilized at 88.5% RTP.

  • All time entries above are Eastern Standard Time (EST).

S UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO: 50-315 UNIT NAME: D.C. COOK UNIT 1 REPORT MONTH: SEPTEMBER 1996 DATE: October 2, 1996 COMPLETED BY: M.E. Russo TELEPHONE: 616-697-5100 PAGE: Page 1 of 1 METHOD OF SHUTTING LICENSEE DURATION DOWN EVENT SYSTEM COMPONENT CAUSE AND CORRECTIVE ACTION NO. DATE TYPE HOURS REASON REACTOR REPORT NO. CODE CODE TO PREVENT RECURRENCE 328 092196 F 173.3 96-004 n/a n/a At 2349 EST Unit 1 received a Reactor trip signal as a result of ~

spurious Main Transformer Sudden Over-Pressure signal most probably induced by a lightning strike. An unrelated Source Range Nuclear Instrumentation problem required the replacement of detector N-31.

Detector N-32 was replaced also as an elective conservative measure.

The Main Generator was paralleled to the grid 092996 at 0504 EST.

1 2 3 5 F: Forced Reason: Method: Exhibit G Instructions Exhibit I: Same S: Scheduled A: Equipment Failure (Explain) 1: Manual for preparation of data Source B: Maintenance or Test 2: Manual Scram entry sheets for Licensee C: Refueling 3: Automatic Scram Event Report (LER) File D: Regulatory Restriction 4: Other (Explain) (NUREG 0161)

E: Operator Training and License Examination F: Administrative G: Operational Error (Explain)

H: Other (Explain)

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