ML20155E104

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Monthly Operating Repts for May 1988 for Byron Units 1 & 2
ML20155E104
Person / Time
Site: Byron  Constellation icon.png
Issue date: 05/31/1988
From: Spitzer D
COMMONWEALTH EDISON CO.
To:
Shared Package
ML20155E108 List:
References
NUDOCS 8806150501
Download: ML20155E104 (14)
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BYRON NUCLEAR POWER STATION UNIT 1 AND UNIT 2 MONTHLY PERFORMANCE REPORT COMMONWEALTH EDISON C04PANY NRC DOCKET NO. 050-454 NRC DOCKET NO. 050-455 LICENSE NO. NPF-37 LICENSE NO. NPF-66 a

(0625M/0062M-2)

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I. Monthly Report for Byron Unit 1 for the month of May 1988 A. Summary of Operatina Experience for Unit 1 The unit began this reporting period in Mode 1 at 98% power. Poder was maintained at or near 98% until 5/27/88, a load decrease, for a two week outage, to repair a tube leak in the 1A Steam Generator, was started. The turbine was tripped at 0016 on 5/28/88. Mode 5 (Cold Shutdown) was '

entered on 5/28/88. The unit remained in Mode 5 for the rest of the reporting period.

(0625M/0062M-3)

B. OPERATING 9ATA REPOEI DOCKET NO.: 050-454 UNIT: Byron One DATE: 06/10/88 COMPILED BY: D. J. Spitzer TELEPHONE: (815)234-5441 x2023 OPERATING STATUS

1. Reporting Period May 1988. Gross Hours: 744
2. Currently Authorized Power Level (MWt): 3411 Design Electrical Rating: 1175 (MWe-gross)

Design Electrical Rating: 1120 (MWe-net)

Max Dependable Capacity (MWe-net): NOT DETERMINED

3. Power Level to Which Restricted (If Any): 1097 (Mwe-net)
4. Reasons for Restriction (If Any): Steam Generator Split Flow (23MW)

THIS MCNTH YR TO DATE CUMULATIVE *

5. Report Period Hrs. 744 3647 23736
6. Rx Critical Hours 649 3201.7 18513.7
7. Rx Reserve Shutdown Hours 0 0 37.8
8. Hours Generator on Line 648.3 3191.4 18152.4
9. Unit Reserve Shutdown Hours 0 0 0
10. Gross Thermal Energy (HWM) 2145372 9972134 53567984
11. Gross Elec. Energy (MWH) 727058 3320029 17945806
12. Net Elec. Energy (MWH) 689586 3133042 16872519
13. Reactor Service Factor 87.2 87.8 78
14. Reactor Availability Tactor 87.2 87.8 78.2
15. Unit Service Factor 87.1 87.5 76.5 l
16. Unit Availability Factor 87.1 87.5 76.5
17. Unit Capacity Factor (MDC net) N/A N/A N/A
18. Unit Capacity Factor (DER net) 82.8 76.7 63.5
19. Unit Forced Outage Hrs. 0 65.3 977.4
20. Unit Forced Outage Rate 0 2.0 5.1
21. Shutdowns Scheduled Over Hext 6 Months: 09/03/88
22. If Shutdown at End of Report Period, Estim3ted Date of Startup 06/13/88 I
23. Units in Test Status (Prior to Commercial Operation): None
  • Note - The cumulative numbers do not reflect power generated prior to commercial service.

(0625M/0062M-4)

C. AVERAGE DAILY UNIT POWER LEVEL

. DOCKET NO. 050-454 UNIT: Byron One DATE: 06/10/88 COMPILED BY: D. J Spitzer TELEPHONE: (815)234-5441 x2023 MONTH: May, 1988 DAY AVERAGE DAILY POWER LEVEL l

(MWe-Net) I

1. 1073 MW 16. 1080 MW l 1
2. 1071 MW 17, 1079 MW
3. 1072 MW 18. 1077 MW
4. 1076 MW 19. 1079 MW
5. 1072 MW 20, 1079 MW
6. 1065 MW 21, 1061 MW
7. 1060 MW 22, 1041 MW _ _ _
8. 1064 MW 23. 1075 MW
9. _ _ _ . 1068 MW 24. 1084 MW
10. 1069 MW 25. 1086 MW
11. 1070 MW 26. 1081 MW
12. 1064 MW 27. 918 MW
13. 1072 MW 28. -20 MW
14. 1074 MW 29. -14 MW
15. 1069 MW 30. -13 MW
31. - 1 *, MW INSTRUCTIONS On this form list 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 net electrical rating of the unit there may be occasions when the daily average pcwer level exceeds the 100% line (or the restricted power level line.)

In such cases the average daily unit power output sheet should be footnoted to explain the apparent anomaly.

(0625M/0062M-5)

          • =********************

Report Period May, 1988 UNIT SEUTDOWNS/REOUCTIONS

  • BYRON *

(UNIT 1) **************************

No. Date Hours Heason MtG; hod _LER Number Syittm_._ Component Cause & CorInctive Action to Prevent RECu m nCR

7. 05/28/88 S 95.7 A 1 SG Gutage for 1A Steam Generator Tube Leak Repair ocooe******u=*
  • Summa ,
  • ooooo*****

TYPE Reason Method System & Component F-Forced 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)

(0625M/0062M-6)

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1 E. UNIOUE REPORTING REQUIREMENTS (UNIT 1) for the month of May 1988

1. Safety / Relief valve operations for Unit One.

VALVES NO & TYPE PLANT DESCRIPTION DATE ACWATED ACWATION CONDITION OF EVENT None 1

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

No

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

Yes. 1131 = 8.0 E-4 peuries/cc 1

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(0625M/0062M-7) '

I F. LICENSEE EVENT REPORTS (UNIT 1)

. l The fc11owing is a tabular summary of all Licensee Event Reports for. Byron l Nuclear Power Station, Unit One, submitted during the reporting period, .l May 1 through May 31, 1988. This information is provided pursuant to the reportable occurrence reporting requirements as set forth in 10CFR 50.73.

Occurrence Licensee Event Report Number Date Title of Occurrence 1 88-002-00 04/18/86 Reactor Trip Due to Rod Drop During Manual Control Rod Motion l

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II. Monthly Raport for Byron Unit 2 for the month of May 1988 A. Summary of Ooeratino Experience for Un1 U The unit began this reporting period in Mode 1 at 87% power. The unit operated at power levels of up to 94% until 5/6/88 when at 1216 a reactor trip was initiated due to the 2C Feedwater pump trip and decreasing Steam Generator level. The roactor was taken critical at 0013 on 5/7/88 and synchronized to the grid at 0450 the same day.

The unit operated at power levels of up to 94% tw.!1 5/21/88 when power was reduced to 70% for circulating water box cleaning. On 5/23/88 at 0428 a ramp to 94% was begun. The unit operated at power levels of up to 95% for the rest of the reporting period.

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B. OPERATING DATA REPORT DOCKET NO.: 050-455

, UNIT: Byron Two DATE: 06/10/88 COMPILED BY: D. J. Spitzer TELEPHONE: (815)234-5441 x2023 OPERATING STATUS

1. Reporting Period: M ay 1988. Gross Hours: 744
2. Currently Authorized Power Level (MWt): 3411 Design Electrical Rating: 1175 (MWe-gross)

Design Electrical Rating: 1120 (MWe-net)

Max Dependable Capacity (HWe-net): NOT DETERMINED

3. Power Level to Which Rettricted (If Any): 1055 (MWe-net)
4. Peasons for Restriction ('f Any): Steam Generator Split Flow. (65 MW)

THIS MONTH YR TO DATE CUMULATIVE *

5. Report Period Mrs. 744 3647 6840
6. Rx Critical Hours 732.1 3620.7 5949.9
7. Rx Reserve Shutdown Hours 0 0 0
8. Hours Generator on Line 727.4 3417.6 5698
9. Unit Reserve Shutdown Hours 0 0 0
10. Gross Thermal Energy (MWH) 2155660 9816193 16288357
11. Gross Elec. Energy (MWH) 736695 3298133 5402444
12. Het Elec. Energy (MWH) 698590 3109178 5080079
13. Reactor Service Factor 98.4 99.3 87.0
14. Reactor Availability Factor 98.4 99.3 87.0
15. Unit Service Factor 97.8 93.7 83.3
16. Unit Availability Factor 97.8 93.7 83.3
17. Unit Capacity Factor (KDC net) N/A N/A N/A
18. Unit Capacity Factor (DER net) 83.8 76.1 66.3
19. Unit Forced Outage Hrs. 16.2 41.8 328.8
20. Unit Forced Outage Rate 2.2 1.2 5.5
21. Shutdowns Scheduled Over Next 6 Months:
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.

(0625M/0062M-10)

I C. AVERAGE DAILY UNIT POWEp LEVEL DOCKET NO.: 050-455 UNIT: Byron Two DATE: 06/10/88 COMPILED BY: D. J. Spitzer TELEPHONE: (815)234-5441 l x2023 '

MONTH: May, 1988 i

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

1. 1015 MW 16. 1053 MW

]

2. 1042 MW 17. 1009 MW
3. 1033 MW 18. 997 MW l
4. 1052 MW 19. 999 MW
5. 1051 MW 20. 1039 MW
6. 437 MW 21. 772 MW j

7, 166 MW 22. 765 MW l

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8. 546 MW 23. 964 MW j l
9. 994 MW 24. 1054 MW
10. 1013 MW 25. 995 MW l
11. 1006 MW 26. 982 MW
12. 1037 MW 27. 1004 MW
13. 990 MW 28. 977 MW 14, 1017 MW 29. 1023 MW
15. 1022 MW 30. 1006 MW
31. 1034 MW INSTRUCTIONS On this form list the average daily unit power level in MWe-Het 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 net electrical rating of the unit there may be occasions when the daily average power level exceeds the 100% line (or the restricted power level line.) In such cases the average daily unit power output sheet should be footnoted to explain the apparent anomaly.

(0625M/0062M-11)

Raport Period Mayil, 1988 UNIT SHUTDOWNS / REDUCTIONS

  • BYRON *

(UNIT 2) **************************

RL_ Date - Type Hours Reason Method LER lhaber System Cornponent Cause & Corrective Action to Prevent _ Recurrence

8. 05/06/88 F 16.6 A 2 FW 2C FW Pp Manual trip at 20% Steam Generator Level prior to auto trip at 17% Steam Generator Level, after the 2C Feedwater pump tripped.
9. 05/21/88 S 48 B 5 Reduced load to clean water boxes.
    • a*o*o********
  • Summary
  • oooooooc*******

IyPE Henson Me thod System & Compnnent  !

R-Forcsd A-Equip Failure F-Admin 1-Manual Exhibit F & H 6-Sched B-Maint or Test G-Oper Error 2-Manual Scram Instructions for C-Refueling E-Other 3-Auto Scram Preparation of D-Regulatory Restriction 4-Continued Data Entry Sheet E-Operator Training 5-Reduced Load Licensee Event Report

& License Esamination 9-Othe r (LER) File (NUREG-0161)

(0623M/0062M-12) 1

I E. UNIOUE REPORTING REQUIREMENTS (UNIT 2) for the month of May 1988

1. Safety / Relief valve operations for Unit Two.

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

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

No

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

Yes. 1131 = 1.0 E-2 pcuries/cc

)

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, (0625M/0062H-13) l

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i L LICENSEE EVENT REPORTS (UNIT 2) l The following is a tabular summary of all Licensee Event Reports for Byron 1 Nuclear Power Station, Unit Two, submitted during the reporting period, i May 1 thrcugh May 31, 1988. This information is provided pursuant to the l riportable occurrence reporting requirements as set forth in 10CFR 50.73.

Occurrence Licensee Event Report Number ph Title of Occurrence l l

NONE l l

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(0625M/0062M-14)

Attached are corrections to the April report (Submitted 5/10/88)

These corrections resulted from the time change that occurred in April.

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