ML20127P239

Monthly Operating Rept for Apr 1985

ML20127P239
Person / Time
Site:	Byron
Issue date:	04/30/1985
From:	Querio R, Toney J COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
BYRON-85-0499, BYRON-85-499, NUDOCS 8505230729
Download: ML20127P239 (8)

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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 l

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-Monthly Report fer Byron Unit 1 A.

Summary of Operating Experience for Unit 1 During this reporting period, Byron Station's Unit 1 continued in.its.

-Startup. Testing Program,'and achieved significant objectives toward Commercial Operation.

The. Unit began this' reporting period'on April 1 in a critical mode with the generator synchronized to the grid. The Unit remained as 4

such until April 2 at 1410 hours0.0163 days <br />0.392 hours <br />0.00233 weeks <br />5.36505e-4 months <br /> when a Reactor Trip occurred due to

.a Low-Low Steam Generator-Level.

The' Unit was'taken critical on April 3 at 1422 hours0.0165 days <br />0.395 hours <br />0.00235 weeks <br />5.41071e-4 months <br /> and the generator was synchronized onto the grid at 2310 hours0.0267 days <br />0.642 hours <br />0.00382 weeks <br />8.78955e-4 months <br />.- The. reactor remained critical until April'10 at 1335 hours0.0155 days <br />0.371 hours <br />0.00221 weeks <br />5.079675e-4 months <br /> when a Reactor Trip due to High Negative Rate occurred. Additionally, on April 10 at.

1326 hours0.0153 days <br />0.368 hours <br />0.00219 weeks <br />5.04543e-4 months <br /> in an unrelated incident, a rupture disc on a Boric Acid Evaporator ruptured releasing slightly radioactive steam & water.

Area radiation monitor alarms were received and the 346' elevation of the Auxiliary Building was evacuated.

'The unit was taken critical on April 12 at 1550 hours0.0179 days <br />0.431 hours <br />0.00256 weeks <br />5.89775e-4 months <br /> and the generator was synchronized onto the grid on April 13 at 0342 hours0.00396 days <br />0.095 hours <br />5.654762e-4 weeks <br />1.30131e-4 months <br />.

.The reactor remained critical through April 15 at 2033 hours0.0235 days <br />0.565 hours <br />0.00336 weeks <br />7.735565e-4 months <br /> when a-Manual Turbine Trip / Reactor Trip was performed for testing purposes.

I-The reactor was again taken critical on April 16 at 0135 hours0.00156 days <br />0.0375 hours <br />2.232143e-4 weeks <br />5.13675e-5 months <br /> and the generator was synchronized to the grid at 2102 hours0.0243 days <br />0.584 hours <br />0.00348 weeks <br />7.99811e-4 months <br />. The reactor-I remained critical until April 21 at 0011 hours1.273148e-4 days <br />0.00306 hours <br />1.818783e-5 weeks <br />4.1855e-6 months <br /> when a Reactor Trip occurred due to a Low-Low Steam Generator level.

l The reactor was taken critical again on April 21 at 1851 hours0.0214 days <br />0.514 hours <br />0.00306 weeks <br />7.043055e-4 months <br /> and the generator was synchronized onto the grid on April 22 at 0124 l

hours. The unit temained critical through the end of this reporting period.

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OPERATING' DATA REPORT DOCKET NO.: 050-454-UNIT: Byron One DATE: 5/6/85 COMPILED BY:

J.P. Toney TELEPHONE:

(815)234-5441 x2437~

iOPERATING STATUS

'l.

Reporting Period: April 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): NOI DETERMINED

'3.

Power Level to Which Restricted (If Any): 588 (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 621.9

-1273.3 1273.3 6.

Reactor Reserve Shutdown Hours 0

0 0

-7. ' Hours Generator on Line 576.1 736.5,

736.5 8.

Unit Reserve Shutdown Hours 0

0 0

9.

Gross Thermal Energy Generated (MWH) 689973 809319 809319

10. Gross Elec. Energy Generated (MWH) 173567 190627 190627

11. Net Elec. Energy Generated (MWH) 140494 136340 136340

12. Reactor Service Factor 0

0 0

13. Reactor Availability Factor 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: N/A

21. Units in Test Status (Prior to Conunercial Operation): Unit 1 FORECAST ACHIEVED Initial Criticality 1-25-85 2-2-85 Initial Electricity 3-1-85 Commercial Operation (0625M) i

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.: 050-454 UNIT: Byron One DATE: 5/6/85 COMPILED BY:

J.P. Toney TELEPHONE:

(815)23i-5441 x2437 MONTH: April, 1985 1.

126MW 17.

222MW l2.

73MW 18.

335MW 3.

6MW 19.

475MW 4.

150MW 20.

520MW 5.

180MW 21.

2MW 6.

196MW 22.

275MW 7.

200MW 23.

471MW 8.

185MW 24.

502MW 9.

205MW 25.

472MW 10.-

115MW 26, 266MW 11.

0 27.

353MW 12.

0 28.

450MW 13.

88MW 29.

525MW 14.

137MW 30.

518MW 15.

168MW 16.

22MW INSTRUCTIONS On this form list the average daily unit power level in MWe-Net for each day 1

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

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UNIQUE REPORTING REQUIREMENTS 1.

Safety / Relief valve operations for Unit One.

VALVES NO & TYPE PLANT DESCRIPTION DATE ACTUATED ACTUATION CONDITION OF EVENT NONE 4

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LICENSEE EVENT REPORTS The following is a tabular summary of all licensee event reports for Byron Nuclear Power Station, Unit One, during the reporting period, April 1 through

. April 30,.1985.

This.Information is provided pursuant to the reportable J

. occurrence reporting requirements as set forth in 10CFR 50.73.

l Licensee Event Report Number Date Title of Occurrence 84-042-00 4-01-85 EMPC Position Not Verified.

84-043-00 4-12-85 Failure to Perform ASME Section XI Testing.

85-027-01 4-19-85 Failure of MSIV to Close on MS Isolation Signal.

85-028-00 4-18-85 Reactor Trip During Turbine Valve Surveillance.

85-029-00 4-01-85 Impulse Chamber In Test / Reactor Trip.

85-030-00 4-05-85 Manual Aux Feed Initiation.

85-031-00 4-01-85 Reactor Trip.

85-032-00 4-02-85 Improper Orientation of Non-Return Check Valve.

85-033-00 4-01-85 Missed Sample Analyses on Unit 1 and Unit 2 Aux Building Vent Stack Monitors.

85-034-00 4-01-85 Manual Safety Injection.

84-035-00 4-12-85 Low Steamline Pressure Safety Injection.

84-036-00 4-18-85 ESF Actuation Due to Radiation Monitor Power Fail.

85-037-00 4-16-85 Auto Start of OB VC M/U Fan.

85-038-00 4-11-85 Missed CO2 Surveillance.

85-039-00 4-22-85 Reactor Trip.

85-040-00 4-18-85 Failure to Meek ICO Action Requirement.

85-042-00 4-25-85 Reactor Trips Due to Dropped Rods.

85-043-00 4-25-85 Fire Watches Prevented Due to Aux Bldg Access Restrictions.

85-044-00 4-25-85 Failure to Enter LCO Action Statement.

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rN Commonwealth Edison

.V. ' /

\\. Byron Nuclear St: tion f

' 4450 North G:rm".n Church R:cd a

Byron, Illinois 61010 May 6,-1985 LTR:

BYRON 85-0499 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 Gentlemen:

Enclosed for your information is the Monthly Performance Report covering Byrcn Nuclear Power Station for the period April 1 through April 30, 1985.

Very truly yours,

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h-R. E.

erio Station Superintendent Byron Nuclear Power Station REQ /JPT/cib Enclosure cc:

J.G. Keppler, NRC, Region III

'NRC Resident Inspector Byron Gary Wright, Ill. Dept. of Nuclear Safety D.P. Galle, CECO D.L. Farrar, CECO INPO Records Center Thermal Group, Tech Staff Byron Station Nuclear Group, Tech Staff Byron Station i

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