ML20196L641

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Monthly Operating Repts for Apr 1988 for Byron Station Units 1 & 2
ML20196L641
Person / Time
Site: Byron  Constellation icon.png
Issue date: 04/30/1988
From: Pleniewicz R, Spitzer D
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
BYRON-88-0457, BYRON-88-457, NUDOCS 8807080084
Download: ML20196L641 (14)
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a BYRON NUCLEAR POWER STATION UNIT 1 AND UNIT 2 MCETHLY PERFORMANCE REPORT COMMONWEALTH EDISON COMPANY NRC DOCKET NO. 050-454 NRC DOCKET NO. 050-455 LICENSE NO. NPF-37 LICENSE NO. NPF-66 (0625M/0062M-2)

G807080084 880430 POR .

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I. Monthly Report for Byron Unit 1 for the month of Aoril 1988 A. Summary of Operating Experience for Unit 1 The unit Degan this reporting period in Mode 1 at 98% power. On 4/2/88, a load decrease, for a two week outage, to repair a tube leak in the ID Steam Generator, was started. The turbine was tripped at 0852 on 4/3/88.

Mode 5 (Cold Shutdown) was entered at 0501 on 4/4/88. The outage was completed and the unit synchronized to the grid at 1528 on 4/15/88. By 1300 on 4/18/88 the unit was returned to 98% power. At 2120 on 4/18/88 a reactor trip occurred due to Hi flux rate. The reactor remained in Mode 3 (Hot Standby) until 1149 on 4/21/88 when the reactor was taken critical.

The unit was synchronized to the grid at 1435 the same day. Power was increased to 49% on 4/22/88. The unit operated at power levels of up to 98% for the rett of the reporting period.

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B. OPERATING DATA REPORT 050-454 DOCKET NO.:

UNIT: Byron One DATE: 05/10/88 COMPILED BY: D. J. Spitser TELEPHONE: (815)234-5441 x2023 OPERATING STATUS

1. Reporting Period: April 1988. Gross Hours: 720
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 MONTH YR TO DATE CUMULATIVE *

5. Report Period Hrs. 720 2904 22993
6. Rx Critical Hours 369.7 2553.7 17865.7
7. Rm Reserve Shutdown Hours 0 0 37.8
8. Hours Generator on Line 360.1 25+4.1 17505.1
9. Unit Ressrve Shutdown Hours 0 0 0
10. Gross Thermal Energy (HWH) 934505 7826762 51422612
11. Gross Elec. Energy (MWH) 310196 2592971 17218748
12. Net Elec. Energy (MWH) 283917 2443496 16182933 i
13. Reactor Service Factor 51.3 87.9 77.7
14. Reactor Availability Factor 51.3 87.9 77.9 j' 15. Unit Service Factor 50.0 87.6 76.1

( 16. Unit Availability Factor 50.0 87.6 76.1

17. Unit Capacity Factor (MDC not) N/A N/A N/A
18. Unit Capacity Factor (DER not) 35.2 75.1 62.8
19. Unit Forced Outage Hrs. 65.7 65.7 977.8
20. Unit Forced Outage Rate 15.4 2.5 5.3
21. Shutdowns Scheduled Over Next 6 Months: 09/03/88
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 i service.

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e C. AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.: 050-454 UNIT: Byron One DATE: 05/10/88 COMPILED BY D. J. Spitzer TELEPHONE: (815)234-5441 x2023 MONTH: April, 1988 l

DAY AVERAGE DAILY POWER LEVEL (HWe-Net)

1. 1058 MW 16. 329 MW
2. 1039 MW 17. 528 MW
3. 112 MW 18. 873 MW
4. -18 MW 19. -28 MW
5. -14 MW __ 20. -27 MW-
6. -13 MW 21. 58 MW
7. -12 MW 2 2 . _. __ 702 MW
8. -13 MW 23. 308 MW

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9. -19 MW 24. 560 MW
10. -20 MW 25. 1067 MW
11. -16 MW 26, 1078 MW
12. -17 MW , 27. 1077 MW __
13. -21 NH 28. 1076 MW
14. -26 MW 29. 1078 MW
15. 55 MW 30. 1075 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 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-5) l 1

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' a RIport Period April, 1988 UNIT SHUTDOWNS / REDUCTIONS

  • BYRON *

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

t No. Date Tyne Hours Reason Method LER Number _ System Component Cause & Corrective Action to Prevent Recurrence

4. 04/03/88 S 294.6 A 1 SG Outage for Snubber Inspection and ID Steam Generator Leak Repair.
5. 04/18/88 F 65.7 A 3 6-88-002-00 --

Ex Trip On Power Range Flux Rate HIgh.

6. 04/23/88 - ---

B 5 --

Re-Adjust Power Range N.I. "High Flux Ex Trip" Setpoints.

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O Summary

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TYPE Reason Method System & Comnonent F-Forcsd A-Equip Failure F-Admin 1-Manudl 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-OtLar (LER) File (NUREG-0161)

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UNIOUE REPORTING REOUIREMENTS (UNIT 1) for the month of April 1988

1. Safety /Rellef valve operations for Unit One.

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

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

No

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

Yes. I131 = 2.6 E-3 pcuries/ gram a

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(0625M/0062M-7)

r. LICENSEE EVENT REPORTS (UNIT 1)

The following is a tabular sumenary of all Licensee Evant Reperts for Byron Nuclear Power Station, Unit One, submitted during the reporting period, April 1 through April 30, 1988. This information is provided pursuant to the reportable occurrence reporting requirements as set ferth in 10CFR 50.73.

Occurrence Licensee Event Report Numher Date Title of Occurrence None l

l (0625M/0062M-8) i

II. Monthly Report for Byron Unit 2 for the month of April 1988 A. Summary of Operatina Experience for Unit 2 The unit began this reporting period in Mode 1 at 94% power. The unit operated at power levels of up to 94% until 4/8/88 when power was reduced to investigate the erratic operation ol a feedwater pump governor valve. Power remained at approximately 54% until 4/10/88 '

when the unit was returned to 94% power. The unit operated at power levels of up to 94% for the rest of the reporting period.

(0625M/0062M-9) l t

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B. OPERATING DATA REPORT DOCKET NO.: 050-455 UNIT: Byron Two DATE: 05/10/88 COMPILED BY: D. J. Spitzer TELEPHONE: (815)234-5441 x2023 OPERATING STATUS

1. Reporting Period April 1988. Gross Hours: 720
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): 1055 (MWe-net)
4. Reasons for Restriction (If Any): Steam Generator Split Flow. (65 MW)

THIS MONTH YR TO DATE CUMULATIV'.*

5. Repott Period Hrs. 720 2904 6097
6. Rx Critical Hours 720 2889.6 5210.8
7. Rx Reserve Shutdown Hours 0 0 0
8. Hours Generator on Line 720 2691.2 4971.6
9. Unit Reserve Shutdown Hours 0 0 0
10. Gross Thermal Energy (MWH) 2215387 7660533 14132697
11. Gross Elec. Energy (MWH) 765010 2561438 4665749
12. Het Elec. Energy (MWH) 723376 2410588 4381489
13. Reactor Service Factor 100 99.5 85.6
14. Reactor Availability Factor 100 99.5 85.6
15. Unit Service Factor 100 92.7 81.5
16. Unit Availability Factor 100 92.7 81.5
17. Unit Capacity Factor (MDC not) N/A N/A N/A
18. Unit Capacity Factor (DER not) 89.7 74.1 64.2
19. Unit Forced Outage Hrs. 0 25.2 312.2
20. Unit Forced Outage Rate 0 1.0 6.0
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)

C. AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.: 050-455 UNIT: Byron Two DATE: 05/10/88 COMPILED BY: D. J. Spitzer TELEPHONE: (815)234-5441 x2023 MONTH: April, 1988 DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

1. 1055 MW 16. 985 MW
2. 1050 MW 17, 1009 MW
3. 1013 MW 18. 1031 MW
4. 1045 MW 19. 1023 MW
5. 1046 MW 20. 1026 MW
6. 1061 MW 21. 1031 MW
7. 1061 MW 22. 995 AW
8. 944 MW 23. 1042 MW
9. 649 MW 24. ___ 1043 MW
10. 642 MN 25, 1023 MW
11. 1044 MW 26. 1042 MW
12. 1048_Kf 27, 1052 MW
13. 1034 MW 28. 1060 MW
14. 1032.NM 29. 987 MW __
15. 1021 MW 30. 1019 MW INSTRUCTICHS l

On this form list the average daily unit power level in MWe-Net for each day l 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 i 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 casas the average daily unit power l output sheet should be footnoted to explain the apparent anomaly.

(0625M/0062M-11) l t

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Rcport Period April, 1988 UNIT SHUTDOWNS / REDUCTIONS

  • BYRON * '

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

No. Date Iggn Hours Reason Method rEn Nn=her System Cn=ponent . Cause & Corrective Action to Prevent Recurrence

7. 04/08/88 A 5 FW 2C FW Pp 2C Feedwater Pump Low Pressure Governor Valve ocooceame****ee o Snamary
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TYPE Reason Methnd System & Comnonent 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-O the r 3-Auto Scram Preparation of D-Regulatory Restriction 4-Continued Data Entry Sheet E-Operator Training 5-Reduced Load Licensee Event Report i

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

(0525M/0062M-12)

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UNIOUE REPORTING REQUIREMENTS (UNIT 2) for the month of Aoril 1988

1. Safety / Relief valve operations for Unit Two.

VAINES NO & TYPE PLANT DESCRIPTION DAIE ACTUATED ACTUATION CONDITICM OF EVENT None

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

No

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

Yes. I131 = 6.4 E-3 pcuries/ gram (0625M/0062M-13)

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. LICENSEE EVENT REPORTS (UNIT 2) -

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The following is a tabular summary of all Licensee Event Reports for Byroni Nuclear Power Station, Unit Two, submitted during the reporting period, Apell 1 through April 30, 1988. This information is provided pursuant to the; reportable occurrence reporting requirements as set forth in 10CIR 50.73. '

(

t Occurrence

  • Licensee Event Report Number Date Title of Occurrence i 88-002-00 03/29/88 Component cooling water surge .[

tank level instrumentation \

discrepancies due to a design error.

88-003-00 03/29/88 Technical Specification action statement not satisfied during unintended 2B diesel generator i inoperability due to incorrect drawing.

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(0625M/0061M-14) 4 t.

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.. C:mmtnwealth Edison Byron Nuclear Station 4450 North German Church Road Byron, Illinois 61010 0%

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May 10, 1988 '

3 0* y C,e f LTR: BYRON 88-0457 File 2.7.200 Director, Office of Management Information and Program Control United Stater. Nuclear Regulatory Cormiission Washington, D.C. 20555 ATIN: E Docuatent Control Desk V Gentlemen Enclosed for your information is the Monthly Performance Report covering Byron Nuclear Power Station for the period April 1 through April 30, 1988.

Very truly yours, R. Plenlewicz Station Manager Byron Nuclear Power Station RP/DJS/bb 9\ s v

cc: A.B. Davis, NRC, Region III NRC Resident Inspector Byron

  • Gary Wright, Ill. Dept. of Nuclear Safety

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N T.J. Malman/K.L. Graesser L.D. Dutterfield ^\ T Nuclear Fuel Services, PWR Plant Support t[s L. Anastasia, Station Nuclear Engineering k, \

3 INPO Records Center

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! (0625M/0062M-1)

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