ML20132D401
| ML20132D401 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 06/30/1985 |
| From: | Langan J, Querio R COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF ADMINISTRATION (ADM) |
| References | |
| (0625M), (625M), BYRON-85-0993, BYRON-85-993, NUDOCS 8507310374 | |
| Download: ML20132D401 (8) | |
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BYRON NUCLEAR POWER STATION UNIT 1 MONTHLY PERFORMANCE REPORT C00000NWEALTH EDISON COMPANY NRC DOCKET NO. 050-454 LICENSE NO. NPF-37 i
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I.
Monthly Report fir Byron Unit 1 A.
Summary of Operating Experience for Unit 1 Byron Station's Unit 1 achieved significant objectives towards finishing the startup program by sucessfully completing the 75% and 90% Power Plateaus.
The Unit began this reporting period at 72% Reactor Power. The Reactor remained at power until June 24th when it tripped from an inadvertent feedwater pump trip which caused a low steam generator level. The Unit was returned to 98% power.
The reactor tripped on June 27th from overtemperature delta temperature signal caused by loss of two circulating water cooling pumps. The Unit remained shutdown through the end of the reporting period as part of a planned maintenance outage.
B.
OPERATING DATA REPORT DOCKET NO.:
050-454 UNIT: Byron One DATE:
7/11/85 COMPILED BY:
J.E. Langan TELEPHONE:
(815)234-5441 x2825 OPERATING STATUS 1.
Reporting Period: June 1985 Gross Hours in Reporting Period:
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): 1175 (MWe-gross) 4.
Reasons for Restriction (If Any): START UP TESTING PROGRAM THIS MONTH YR TO DATE CUMULATIVE 5.
Number of Hours Reactor was Critical 619.4 2501.3 2501.3 6.
Reactor Reserve Shutdown Hours 0
0 0
7.
Hours Generator on Line 610.5 1921.6 1921.6 8.
Unit Reserve Shutdown Hours 0
0 0
9.
Gross Thermal Energy Generated (MWH) 1584137 3374248 3374248
- 10. Gross Elec. Energy Generated (MWH) 520682 1029949 1029949
- 11. Net Elec. Energy Generated (MWH) 484763 903690 903690
- 12. Reactor Service Factor 0
0 0
- 13. Reactor Availability Factec 0
0 0
- 14. Unit Service Factor 0
0 0
- 15. Unit Availability Factor 0
0 0
- 16. Unit Capacity Factor (Using MDC) 0 0
0
- 17. Unit Capacity Factor (Using Design MWe) 0 0
0
- 18. Unit Forced Outage Rate 0
0 0
- 19. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each) N/A
- 20. If Shutdown at End of Report Period, Estimated Date of Startup: July 7, 1985
- 21. Units in Test Status (Prior to Commercial Operation): Unit 1 FORECAST ACHIEVED Initial Criticality 1-25-85_
2-2-85 Initial Electricity
_3-1-85_
Comercial Operation
i Co AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.:
050-454
[
UNIT: Byron One DATE: 7/11/85 t
f COMPILED BY:
J.E. Langan TELEPHONE:
(815)234-5441 x2825 MONTH: June, 1985
=
f 1.
763 MW 17.
781 MW 2.
757 W 18.
795 MW 3.
771 MW 19.
962 W 4.
776 MW 20.
967 MW 5.
773 MW 21.
962 MW 6.
768 MW 22.
960 MW r
7.
494 MW 24.
24 MW 9.
743 MW 26.
1060 MW f
11.
593 MW 27.
690 MW 12.
754 MW 28.
O MW 13.
703 MW 29.
O MW 14.
608 MW 30.
O MW 15.
769 MW 16.
771 MW l
l 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 1
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 (or the restricted power level line.)
In such cases the average daily unit power output sheet should be footnoted to explain the apparent anomaly.
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l Report Period Juce 1985 INIT SWTDaleIS/ REDUCTIONS Byron 1 e.........................
No.
Date g Hours Reason Method LER Number Systen rammanwnt Cause & Corrective Action to Prevent Recurrence IS) 6/24/85 F
29.4 G 2
85-061 Operator hooked the FW pump overspeed test lever which tripped the pump while the Unit was at about 98%.
- 19) 6/27/85 F
80.2 A 3
85-062 The unit tripped from a high condenser back pressure, due to the trip of 2 out of 3 circulating water pumps, causing a Reactor Coolant overtemperature condition. The unit went into a scheduled 9 day outage following this trip as part of the start-up testing schedule.
c..............
Summary Byron 1 completed the 75% and 9G% Startup Test Sequences and is in the 100% test sequence, oce............
TYPE Reason Method System & P e nt F-Forced A-Equip Failure F-Admin 1-Mamm1 Exhibit F & H S-Sched B-Maint or Test G-Oper Error 2-Mamul 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 Ioad Licensee Event Report
& License Ihr=ination 9-Other (LER) File (NLitEG-Ol61) l (C625M) i
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E.
IMIQUE REPORTING REQUIREMENTS l
l 1.
Safety / Relief valve operations for Unit One.
l VALVES NO & TYPE PLANT DESCRIPTION I
DATE ACTUATED ACTUATION CONDITION OF EVENT 6/27/85 Pressuriser 1
RX Trip from Valve relieved Power 98% Power Reactor Coolant Operated 8 2335 psig.
Relief Valve See LER 85-62.
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F.
LICBISEE EVENT REPORTS The following is a tabular summary of all licensee event reports for Byron Nuclear Power Station, Unit One, submitted during the reporting period, June 1 through June 30, 1985. This information is provided pursuant to the reportable occurrence reporting requirements as set forth in 10CFR 50.73.
1 Licensee Event Report Number Date Title of Occurrence 85-050-00 6-04-85 Failure to comply with Tech Spec 3/4.2.5 85-051-00 6-20-85 Reactor trip from turbine trip above P-7 85-052-00 6-21-85 (See 85-051) 85-053-00 6-24-85 Reactor trip on Lo-Lo Steam Generator Level 85-054-00 6-23-85 Reactor trip due to low lube oil reservoir 85-055-00 6-14-85 Inoperable containment floor l
drain isolation valves 85-056-00 6-14-85 Analysed condition for Aux.
Bldg. environment 85-057-00 6-27-85 Missed fire watches 85-058-00 6-18-85 Missed fire watches 85-059-00 6-16-85 Missed fire watches l
l 85-053-01 6-27-85 Reactor trip due to Lo-Lo steam l
Generator Level i
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July 11, 1985 LTR:
BYRON 85-0993 File:
2.7.200 Director, Office of Management Information and Program Control United States Nuclear Regulatory Commission Washington, D.C.
20555 ATTN: Document Control Desk Centlement Enclosed for your information is the Monthly Performance Report covering Byron Nuclear Power Station for the period June 1 through June 30, 1985.
Very truly yours, (A.Al85 R. E. Querio Station Superintendent Byron Nuclear Power Station REQ /JEL/sbv Enclosure cc J.G. Keppler, NRC. Region !!!
NRC Resident Inspector Byron Gary Wright, Ill. Dept. of Nuclear Safety D.P. Galle, CDCo T. J. Malman D.L. Farrar, CDCo
- 0. R. Denson, Ravenue Requirements INPO Records Center Thermal Group, Tech Staff Dyron Station Nuclear Group, Tech Staff Dyron Station J. tangan (0625M) rEAY t/,
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