ML20195J800

Monthly Operating Repts for May 1999 for Byron Station,Units 1 & 2.With

ML20195J800
Person / Time
Site:	Byron
Issue date:	05/31/1999
From:	Colglazier R, Lopriore R COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BYRON-99-0089, BYRON-99-89, NUDOCS 9906210129
Download: ML20195J800 (8)

Text

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U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Byron Station, Units 1 and 2 Facility Operating License Nos. NPF-37 and NPF-66 NRC Docket Nos. STN 50-454 and STN 50-455

Subject:

Monthly Operating Report in accordance with Technical Specification 5.6.4, " Monthly Operating Reports," we are submitting the Monthly Operatinc Report for Byron Station, Units 1 and 2. This report covers the period May 1,1999, to May 31,1999.

4 If you have any questions regarding this report, please contact Mr. B. J. Adams, Regulatory Assurance Manager, at (815) 234-5441 extension 2280.

Respectfully, '

/ i uA i 1

Richard Loprio Station Manager Byron Station -

RL/RC/dpk 3a C j

cc: Regional Administrator- NRC Region 111 NRC Senior Resident inspector- Byron Station l

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BYRON STATION UNIT 1 AND UNIT 2

- MONTHLY OPERATING REPORT COMMONWEALTH EDISON COMPANY FACILITY OPERATING LICENSE NOS. NPF-37 AND NPF-66 NRC DOCKET NOS. STN 050-454 AND STN 050-455

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OPERATING DATA REPORT

, UNIT ONE DOCKET NO. 50-454 UNIT NAME Byron One DATE 06/07/99 COMPLETED BY R. Colalazier TELEPHONE (815)234-5441 X2609 REPORTING PERIOD: Mav.199.9 (Month / Year)

MONTH YEAR TO DATE CUMULATIVE

1. Design Electrical Rating (Mwe-Net). 1,120 N/A N/A The nominal net electrical output of the unit specified by the utility and used for the purpose of plant design.

2. Maximum Dependable Capacity (Mwe-Net). 1,105 N/A N/A The gross electrical output as measured at the output terminals of the turbine-generator during the most restrictive seasonal conditions minus the normal station service loads.

3. Number of Hours the Reactor was Critical. 636.2 2,837.63 98,692.03 The total number of hours during the gross hours of the reporting period that the reactor was critical.

4. Number of Hours the Generator was On Line. 627'.5 2,808.82 97,783.22 (Also called Service Hours). The total number of hours during the gross hours of the reporting period that the unit operated with breakers closed to the station bus. The sum of the hours the generator was on line plus the total outage hours should equal the gross hours in the reporting period.

5. Unit Reserve Shutdown Hours. 0 0 38 The total number of hours during the gross hours of the reporting period that the unit was removed '

from service for economic or similar reasons but was available for operation.

6. Net Electrical Energy (MWH). 701,605 3,122,670 97,971,006 The gross electrical output of the unit measured at the output terminals of the turbine-generator minus the normal station service loads during the gross hours of the reporting period, expressed in megawatt hours. Negative quantities should not be used.

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' UNIQUE REPORTING REQUIREMENTS (UNIT 1) J for the month of May,1999

1. Safety / Relief valve operations for Unit One. This information is provided pursuant to the reporting requirements contained in Technical Specification 5.6.4.

VALVES NO & TYPE PLANT DESCRIPTION DATE ACTUATED ACTUATION CONDITION OF EVENT

'None

2. Licensee generated changes to ODCM.

None

. 3. Indications of failed fuel.

None. Fuel Reliability Indicator: FRI = 3.71 E-06 Ci/cc.

4. Licensee Event Reports The following is a tabular summary of all Licensee Event Reports for Byron Station, Unit One, occurring during the reporting period, May 1,1999 through May 31,1999. This information is provided pursuant to the reportable occurrence reporting requirements as set forth in 10CFR 50.73.

j Occurrence Licensee Event Report Number Date Title of Occurrence 454: 99-001 4/23/99 Feedwater Reset

- (Correction From April Report) Pushbuttons Depressed to Prevent Feedwater Isolation when Opening Reactor Trip Breakers 454: 99-002 5/09/99 Missed Tech Spec Surveillance Requirement - 1BOSR 6.3.3-1 454: 99-003 5/13/99 Automatic Reactor Trip due to Human Error During Surveillance pA99byltrs\990082. doc

OPERATING DATA REPORT

, UNIT TWO DOCKET NO. 50455 UNIT NAME Byron Two DATE 06/07/99 COMPLETED BY R. Colalazier TELEPHONE (815)234-5441 X2609 REPORTING PERIOD: May.1999 (Month / Year)

MONTH YEAR TO DATE CUMULATIVE

1. Design Electrical Rating (Mwe-Net). . 1,120 N/A N/A The nominal net electrical output of the unit specified by the utility and used for the purpose

- of plant design.

2. Maximum Dependable Capacity (Mwe-Net). 1,105 N/A N/A The gross electrical output as measured at the output terminals of the turbine-generator during the most restictive seasonal conditions minus the normal station service loads.

3. Number of Hours the Reactor was Critical. 744 3,623 91,392.4 The total number of hours during the gross hours of the reporting period that reactor was critical.

4. Number of Hours the Generator was On Line. 744 3,623 90,669.9 (Also called Service Hours). The total number of hours during the gross hours of the reporting period that the unit operated with breakers closed to the station bus. The sum of the hours the generator was on line plus the total outage hours should equal the gross hours in the reporting period.

5. Unit Reserve Shutdown Hours. 0 0 0 The total number of hours during the gross hours of the reporting period that the unit was removed from service for economic or similar reasons but was available for operation.

6. Net Electrical Energy (MWH). 843,618 4,106,625 91,094,408 The gross electrical output of the unit measured at the output terminals of the turbine-generator minus

- the normal station service loads during the gross hours of the repcMing period, expressed in megawatt hours. Negative (p utities should not be used.

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UNIQUE REPORTING REQUIREMENTS (UNIT 2) for the month of May,1999 l

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1. Safety / Relief valve operations for Unit Two. This information is provided pursuant to the reporting requirements contained in Technical Specification 5.6.4.

VALVES NO & TYPE PLANT DESCRIPTION '

DATE ACTUATED ACTUATION CONDITION OF EVENT i

None

2. Licensee generated changes to ODCM None

3. Indications of failed fuel, l

None. Fuel Reliability Indicator: FRI = 5.76 E-06 Ci/cc l

4. Licensee Event Reports j The following is a tabular summary of all Licensee Event Reports for Byron Station, Unit Two, occurring during the reporting period, May 1,1999 through May 31,1999. This information is provided pursuant to the reportable occurrence reporting requirements as set forth in 10CFR 50.73.

1 Occurrence /

Licensee Event Reoort Number Date Title of Occurrence t

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