ML20206S511
| ML20206S511 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 08/31/1986 |
| From: | Dandrea P, Querio R COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF RESOURCE MANAGEMENT (ORM) |
| References | |
| BYRON-86-1056, NUDOCS 8609220249 | |
| Download: ML20206S511 (9) | |
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BYRON NUCLEAR POWER STATION UNIT 1 MONTHLY PERFORMANCE REPORT COMMONWEALTH EDISON COMPANY NRC DOCKET NO. 050-454 LICENSE NO. NPF-37 i
s 8609220249 860831 PDR ADOCK 05000454 R
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(0625M/62M)
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Monthly Report for Byron Unit 1 A.
Susunary of Operating Experience for Unit 1 The Unit was at power for the entire reporting period.
A Hot Leg Temperature Reduction Program was approved for implementation on August 5 to help prevent stress corrosion cracking of the Steam Generator U-Tubes. Instrument setpoint changes were accomplished on August 11, and power increased to 94%. This power-level was attained on August 13.
The safety analysis for this program was completed for 94% power, therefore, the unit is dorated 6% power based on this analysis and not on actual plant operating parameters. This dorating will continue through the end of the 4
Unit 1 fuel cycle upon where it will be administratively evaluated as to its continuance.
The discretionary load reduction to 70% reactor power inititated on May 17th to minimize the rate of Steam Generator Tube Corrosion and to prevent a back to back outage schedule is ro longer in effect.
The Hot Leg Temperature Reduction program is now being used to help prevent stress corrosion cracking and the outage which occurred in July is delaying refueling aid thereby preventing a back to back outage schedule with Unit 1.
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B.
OPERATING DATA REPORT DOCKET NO.: 050-454 UNIT: Byron One DATE:
9/10/86 COMPILED BY:
P. Dandrea TELEPHONE:
(815)234-5441 x2341 OPERATING STATUd 1.
Reporting Period: August. 1986. 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): 1105 (MWe-gross) 4.
Reasons for Restriction (If Any): Reduction of Hot Leg Teraperatura for Primary Water Stress Corrosion Cracking Concerns.
THIS MONTH YR TO DATE CUMULATIVE
- 5.
Report Period Hrs.
744 5831 8400 6.
Rx Critical Hours 744 4946.8 6939.3 7.
Rx Reserve Shutdown Hours 0
21.7 37.8 8.
Hours Generator on Line 744 4896.1 6088.5 9.
Unit Reserve Shutdown Hours 0
0 0
- 10. Gross Thermal Energy (MWH) 2191871 14425957 17765149
- 11. Gross Elec. Energy (MWH) 745032 4881065 5969655
- 12. Net Elec. Energy (MWH) 705015 4599118 5612016
- 13. Reactor Service Factor 100 84.8 82.6 i
- 14. Reactor Availability Factor 100 85.2 83.0
- 15. Unit Service Factor 100 83.9 72.4
- 16. Unit Availability Factor 100 83.9 72.4
(
- 17. Unit Capacity Factor (MDC net)
N/A N/A N/A
- 18. Unit Capacity Factor (DER not) 84.6 70.4 59.6
- 19. Unit Forced Outage Hrs.
0 610.6 713.2
(
- 20. Unit Forced Outage Pate 0
11.1 10.5-
- 21. Shutdowns Scheduled Over Next 6 Months: None.
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- 22. If Shutdown at End of Report Period, Estimated Date of Startup: N/A l
- 23. Units in Test Status (Prior to Commercial Operation): None
- Note - The cumulative numbers do not reflect power generated prior to conunercial service.
(062 W 62M)
C.
AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.: 050-454 UNIT: Byron One DATE: 9/10/86 COMPILED BY:
P. H. Dandrea TELEPHONE:
(815)234-5441 x2341 MONTH: August, 1986 DAY AVERAGE DAILY POWER LEVEL (MWe-Net) 1.
808 MW 17.
1016 MW 2.
806 MW 18.
1016 MW 3.
806 MW 19.
1024 MW 4.
808 MW 20.
1020 MW 5.
807 MW 21.
1021 MW 6.
807 MW 22.
1014 MW 7.
808 MN 23.
988 MW 8.
809 MW 24.
1019 MW 9.
879 MW 26.
962 MW 11.
973 MW 27.
1019 MW 12.
985 MW 28.
1019 MW 13.
1022 MW 29.
1019 MW 14.
1024 MW 30.
1020 MW 15.
1021 MW 31.
1003 MW 16.
1016 MW INSTRUCTIONS On this form list the average daily unit power level in MWe-Net for each day in the reporting montF. 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 occasiors when tho 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/62M)
I
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Report Period August, 1986 UNIT SHUTDOWNS / REDUCTIONS BYRON
- **eeeeeeeemenneenanne No.
Date Type Hours Reason Method LER Number System P e ent Cause & Corrective Action to Prevent Recurrence None l
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cceeeeeeeeement j
30 days of power operations o
Summary oce............
' 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 j
& License Examination 9-Other (LER) File (NURiG-0161)
(0625M/0062M)
E.
UNIQUE REPORTING REQUIRDENTS 1.
Safety / Relief 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
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(0625N/62M)
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LICENSEE EVENT REPORTS The following is a tabular su: mary of all Licensee Event Reports for Byron Nuclear Power Station, Unit One, submitted during the reporting period, August 1 through August 31, 1986. This information is provided pursuant to the reportable occurrence reporting requirements as set forth in 1GCFR 50.73.
Licensee Event Report Number Date Title of Occurrence d6-024-00 8-14-86 Control Room Ventilation Actuation due to radiation monitor OPR32J particulate channel spike.
86-023-00 8-15-86 Installation of a defective pressuriser safety valve due to personnel errors.
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(0625M/62M)
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1 Sept: amber 10, 1986 LTR:
File:
2.7'.200 t
Director, Office of Management Information i
and Progreu Control J
United States Nuclear Regulatory Commission Washington, D.C.
20555
-ATTN:
' Document Control Desk Gentlemen:
, Enclosed for your information is the Monthly Performance Report covering Byron Nuclear Power Station for the period August 1 through August 31, 1986.
Very truly yours, d $45 2
/
R. E. Querio Station Manager Byron Nuclear Power Station REQ /PHD/1r cc:
J.G. Keppler, NBC, Region III NRC Resident Inspector Byron Gary Neight, Ill. Dept. of Nuclear Safety D.P. Galle T. J. Maiman D.L. Farrar Nuclear Fuel Services, PWR Plant Support L. Anastasia, Station Nuclear Engineering i
INPO Records Center Thermal Group, Tech Staff Byron Station Nuclear Group, Tech Staff Byecn Station L. 01shan - USNRC P. H. Dandrea I
(0625M/62M)
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