ML20151T994

Monthly Operating Repts for Jul 1988 for Byron Units 1 & 2

ML20151T994
Person / Time
Site:	Byron
Issue date:	07/31/1988
From:	Pleniewicz R, Spitzer D COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
BYRON-88-0833, BYRON-88-833, NUDOCS 8808180364
Download: ML20151T994 (14)

Text

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4 BYRON NUCLEAR POWER STATION UNIT 1 AND UNIT 2 .

I MONTHLY PE.4FORMANCE kEPORT Cr*4hlCHWEALTH EDISON COMPANY NRC DOCKET NO. 050-454 -

NRC DOCKET NO. 050-455 LICENSE NO. NPF-37 f LICENSE NO. NPF-66 t

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8808180364 880731 PDR ADOCK 05000454 ,

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]. (0625M/0062M-2)

4 I. .tionthly Report for Byron Unit L for the month of July 1988 Sumaary of Operating Experience for Unit 1 A.

The unit began this reporting period in Mode 1 at 98% power. The unit operated at power levels of up to 98% until 7/16/88 at 0434 when a reactor trip occurred (1B feedwater pump trip). The reactor was taken critical at 0212 on 7/17/88 and synchronised to the grid at 1224 the same day. The unit operated at power levels of up to J% for the rest of the reporting period, t

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(0625N/0062M-3)

B. OPERATING DATA REPORT DOCKET NO.: 050-454 UNIT: Byron One DATE: 08/10/88 CCMPILED BY D. J. Spitaor

'lELEPHONE: (815)234-5441 x2023 OPERATING STATUS

1. Reporting Period: July 1988. Gross Hours 744

2. Currently Authorised Power Levels 3411 (MWt)

Design Electrical Rating: 1175 (MWe-gross)

Design Electrical Rating: 1120 (MWe-net)

Max Dependable Capacity: 1105 (MWe-net)

3. Power Level to Which Restricted (If Any): 1097 (HWe-not)

4. Reasons for Restriction (If Any): Steam Generator Split Flow (23HW)

5. Report Period Hrs. THIS MONTH YR TO DATE CUMULATIVE

• 744 5111 25200

6. Rx Critical Hours 722.4 4400 19712 7 Rx Reserve Shutdown Hours 0 0 37.8

8. Hours Generator on Line 712.2 4376.1 19337.1

9. Unit Reserve Shutdown Hours 0 0 0

10. Gross Thermal Energy (MWH) 2293717 10683531 57279381

11. Gross Elec. Energy (MWH) 775163 4572595 12138372

12. Het Elec. Energy (MWH) 734398 4314826 18054303

13. Reactor Service Factor 97.1 86.1 78.2

14. Re&qtor Availability Factor 97.1 86.1 78.4

15. Unit Service Factor 95.7 85.6 76.7

16. Unit Availability Factor 95.7 85.6 76.7

17. Unit Capacity Factor (MDC not) 89.3 76.4 64.8

18. Unit Capacity Factor (DER not) 88.1 75.4 64.0

19. Unit Forced Outage Hrs. 31.8 97.1 1009.2 j 20. Unit Forced Outage Rate 4.3 2.2 5.0 f 21. Shutdowns Scheduled Over Next 6 Months: 09/03/88

22. If Shutdown at End of Report Porlod, Estimated Date of Startup:

23. Units in Test Status (Prior to Commercial Operation): None l

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• Note - The cumulative numbers do not reflect power generated prior to commercial service.

1 (0625M/0062M-4)

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C.... AVERAGE. DAILY UNIT POWER ley"4 DOCKET NO. 050-454 UNIT: Byron One DATE: 08/10/88 COMPILED BY: D. J. Spitzer TELEPHONE: (815)234-5441 x2023 MONTH: July, 1988 DAY AVERAGE DAILY POWER LEVEL (HWe-Net)

1. 1027 MW 16. 178 MW

2. 1080 MW

17. 115 MW

3. 1076 MW 18. 707 MW

4. 1071 MW 19. 991 MW -

5. 1068 MW 20. 1974 MW

6. 1064 MW 21. 985 MW

7. 1065 MW 22. 988 MW

8. 1053 MW 23. 1069 MW 9, 1055 MW 24. 1077 MW

10. 1073 MW 25, 1079 MW

11. 1077 _MJf 26. 1073 MW

12. 1061 MW 27. 1076 MW

13. 1065 MW 28. 1076 MW

14. 1056 MW 29. 1080 MW

15. 1C49 MW 30, 1077 MW

___ 31. 1000 MW INSTRUCTIONS On this form li'st the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt. These figures will be used to plot a graph for each reporting month. Note that when maximum dependable capacity is used for the not electrical rating of the unit there may be occasions when the daily average power level exceeds the 100% line (o:

the restricted power level line.)

In such cases the average daily unit power cutput sheet should be footnoted to explain the apparent anomaly, (0625M/0062M-5) m

r' Report Period July, 1988 UNIT SHUTDOWNS / REDUCTIONS * * '

BYRCN *

(UhIT 1) **************************

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No g_ Date Tyne Hours Reason Method LER Numher System Comporcat f=*tse & Corrective Action to Prevent Recurrence

9. 07/16/88 F 31.8 A 3 FW 1B FW PP IB FW Pump tripped causing Steam Generator levels to go to the Lo-Lo Setpoint which caused the Reactor Trip eereme***eeeeee o Summary

• ce*********eee.

TYPE Reason Method System & Component F-Fcrced A-Equip Failure F-Admin 1-Manual Exhibit F & H C-Sched B-Maint or Test G-Oper Error 2-Manual Scram Instructions for C-Refueling H-Other 3-Auto Scram Preparation of D-Regulatory Restriction 4-Continued Data Entry Sheet E-Operator Training 5-Reduced Load Licensee Event Report

& License Examination 9-Other (LF2) File (NUREG-Ol61)

(0625M/0062M-6) .

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En. UNIQUE REPORTING REQUIREMENTS MiNIT 1) for the month of sJuly 1988

1. Safety / Relief valve operations for Unit One.  ;

VALVES NO & TYPE PLANT DESCRIPTION DATE ACTUATEL ACTUATION CONDITION OF EVENT None

2. Licensee generated changes to ODCM. (Y/N)

No

3. Indications of failed fuel. (Y/N)

Yes. I131 = 3.8E-3 pcuries/gr.

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(0625M/0062M-7) m--

. r. LICEliSILEVENT REPORTS (UNIT 1)

The fo11'owing is a tabular summary of all Licensee Event Reports for Byron Nuclear Power Station, Unit One, submitted during the reporting period, July 1 through July 31, 1988. This information is provided pursuant to the reporta51e occurrence reporting requirements as set forth in 10CFR 50.73.

Occurrence Licenstre Event Report Number Date Title of Occurrence 88-003-00 06/13/88 Essential Service Water Makeup Pump Inoperable Greater than 72  ;

Hours Due to Erroneous Electrical Distribution Data O

e (0625M/0062M-8)

II.. Monthly Report for Byron Unit 2 for the month of July 1988 A. Summary of Operatina Experience for Unit 2 The unit began this reporting period in Mode 1 at 94% power. On 7/3/88 a load reduction to approximately 50% was initiated per the load dispatcher. By 1205 on 7/5/88 power was returned to 95%. The unit operated at power levels of up to 95% until 0114 on 7/14/88 when a reactor trip, due to low steam generator level (2C feedwater pump trip) occurred.

The reactor was taken critical at 0349 on 7/15/88.

The reactor tripped at 0436 on 7/15/88 due to low steam generator level (valves 2rWO39B and 2rWO39C f ailed to open). The valves were repaired.

The reactor was taken critical at 1440 on 7/15/88. The unit was synchronized to the grid at 2042 the same day. The unit operated at power levels of up to 95% until 7/30/88 when a load decrease to approximately 50%, for condenser waterbox cleaning, was achieved. The waterbox cleaning was completed at 1000 on 7/31/88.

The unit operated at power levels of up to 75% for the rest of the reporting period.

9 (0625M/0062M-9)

B.. OEERATING DATA REPORT DOCKET NO. 050-455 UNIT: Byron Two DATE: 08/10/88 COMPILED BY: D. J. Spitzer TELEPHONE: (815)234-5441 x2023 OPERATING STATUS

1. Reporting Period: July 1988. Gross Hours: 744

2. Currently Authorized Power Level 3411 (MWt)

Design Electrical Rating: 1175 (MWe-gross)

Design Electrical Rating: 1120 (MWe-not)

Max Dependable Capacity: 1105 (MWe-not)

3. Power Level to Which Restricted (If Any): 1055 (MWe-net) 4.

Reasons for Restriction (If Any): Steam Generator Split Flow. (65 MW)

5. Report Period Hrs. THIS MONTH YR TO DATE CUMULATIVE

• 744 5111 8304

6. Rx Critical Hours 707.3 5017.9 7347.1

7. Rx Reserve Shutdown Hours 0 0 0

8. Hours Generator on Line 700.5 4767.2 7047.6

9. Unit Reserve Shutdown Hours 0 0 0

10. Gross Thermal Energy (4*WH) 2041982 13802725 20274889

11. Gross Elec. Energy (MWH) 686051 4634973 6739284

12. Het Elec. Energy (MWH) 647496 4371373 6342274

13. Reactor Service Factor 95.1 98.2 88.5

14. Renctor Availability Factor 95.1 98.2 88.5

15. Unit Service Factor 94.2 93.3 84.9

16. Unit Availability Factor 94.2 93.3 84.9

17. Unit Capacity Factor (MDC not) 78.8 77.4 69.1

18. Unit Capacity Factor (DER not) 77.7 76.4 68.2

19. Unit Forced Outage Hrs. 43.5 156.2 443.2

20. Unit Forced Outage Rate 5.8 2.7 5.9

21. Shutdowns Scheduled Over Next 6 Months: 1/7/89

22. If Shutdown at End of Report Period, Estimated Date of Startup:

23. Units in Test Status (Prior to Commercial Operation): None

• Note - The cumulative numbers do not reflect power generated prior to commercial service.

(062EM/0062M-10) t _ ~

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-455 UNIT: Byron Two DATE: 08/10/88 COMPILED BY D. J. Spitzer TELEPHONE : (815)234-5441 x2023 MONTH: July, 1988 DAY AVERAGE DAILY POWER LEVEL (HWe-Net)

1. 942 MW 16. 800 MW .

2. 960 MW 17. 988 MW

3. 597 MW 18. _._10 2 9 MW

4. 534 MW 19. __1040 MW

5. 873 MW 20. ___ m 1044 i6t

6. 999 MW 21.

157 MW

7. 1004 MW 22. 952 MW _

8. 997 MW 23. , 1003 MW

9. 1009 MW 24. .982 MW 10, 1020 MW 25. 1033 MW

11. 976 MW 26. 1027 MW

12. 952 MW 27. 1030 MW

13. 955 MW 28, 1025 MW

14. 29 MW 29. 1016 MW

15. 3 MW 30. 569 MW

31. 618 MW INSTRUCTIONS On in thethisreporting form listmonth.

the average daily unit power level in MWe-Net for each day Compute to the nearest whole megawatt. These figures will be used to plot a graph for each reporting month. Note that when maximum dependable capacity is used for the not electrical rating of the unit there may be occasiens when the daily average power level exceeds the 100% line (or the restricted power level line.) In such casos the average daily unit power output sheet should be footnoted to explain the apparent anomaly.

(0625M/0062M-11)

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Report Period July, 1988 UNIT SHUTDOWNS / REDUCTIONS * * *'

BYRON (UNIT 2) ****.**.****************..

No. Date Tygg Hours Reason Method TED Nn=her System Comoonent Cause & Corrective Action to Prevent Recurrence

12. 07/03/88 H 5 Unit 2 Ramped Down Per SPSO

13. 07/14/88 F 22.8 A 3 FW 2C FW PP Reactor Trip Due to Loss of 2C FW Pump on Loss of 4KV Bus 243, AF Actuation

14. 07/15/88 F 20.7 A 3 FW 2FWO398&C Valves Failed to Open Causing Steam Generator Level to Decrease Causing Reactor Trip at Lo-Lo Setpoint

15. 07/30/88 H 5 Load Reduced to Allow Condenser Cleaning l

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• Summary TYPE Reason Method System & Comoonent F-Fcrced A-Equip Failure F-Admin 1-Manual Exhibit F & H S-Sched B-Maint or Test G-Oper Error 2-Manual Scram Instructions for C-Refueling H-Other 3-Auto Scram Preparation of D-Regulatory Restriction 4-Continued Data Entry Sheet E-Operator Training 5-Reduced Load Licensee Event Report

& License Examination 9-Other (LER) File (NUREG-0161)

(062SM/0062M-12)

_ - _ _ . . . . . _ . . .- _ _ _ _ _ _ _ - __. =. ..

E.

UNIOUE REPORTING REQUIREMENTS (UNIT A) for the month of July 1988

1. Safety /Rellef valve operations for Unit Two.

f VALVES NO & TYPE PLANT DESCRIPTION ,

DEC ACTUATED ACTUATION CONDITION OF EVERI None 1

2. Licensee generated changes to CDCM.

(Y/N)

No

3. Indications of failed fuel. (Y/N)

Yes. I131 = 3.3E-3 peurles/gr. '

)

t t

(0625N/0062N-13)

I f

F. LICENSEE EVENT REPORTS (UNIT 2)

The following is a tabular summary of all Licensee Event Reports for Byron l Nuclear Power Station, Unit Two, submitted during the reporting period, July 1 i

through July 31, 1988. This information is provided pursuant to the reportable occurrence reporting requirements as set forth in 10CFR 50.73.

Occurrence L1CRA11e Event ReDort ((Ul!1h1I Date Title.of Occurrence NONE 1,

1 a

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• /- . C!mmonw:alth Edison

1. Byron Nuclear Station

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V 4450 N hyron, Illinois orth Gstrnan 61010 Church Road August 10, 1988 Director, Office of Management Information and Program Control United States Nuclear Regulatory Commission Washington, D.C. 20555 ATIN : Document Control Desk Centlement Enclosed for your information is the Monthly Performance Report covering Byron Nuclear Power Station for the period July 1 through July 31, 1988.

1 Sincerely, ,

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R. Pleniewics Station Manager Byron Nuclear Power Station cc A.B. Davis, NRC, Region III NRC Resident Inspector Byron Gary Wright, Ill. Dept. of Nuclear Safety T.J. Malman/K.L. Graesser H. E. Bliss Nuclear Fuel Services, PWR Plant Support L. Anastasia, Station Nuclear Engineering INPO Records Center L. 01shan - USNRC LTR BYRON 88-0833 FILE: 2.7.200 (0625M/0062M-1) I l