ML20248M307

Monthly Operating Repts for May 1998 for Byron Nuclear Station,Units 1 & 2

ML20248M307
Person / Time
Site:	Byron
Issue date:	05/31/1998
From:	Kofron K, Vogl J COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BYRON-98-0181, BYRON-98-181, NUDOCS 9806150276
Download: ML20248M307 (8)

Text

. - _ - _ _ _ - _ _ _ _

Commonwealth IMison Company

,, . li)ron Generating Station

• 4 450 North German Cimrch Road flyron. IL 61010-979 4 TclHi k H s-si11 l

June 10,1998 I I

LTR: BYRON 98-0181 FILE: 2.7.200 j l

l U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 ATTENTION: Document Control Desk

SUBJECT:

Monthly Operating Report Byron Nuclear Power Station, Units 1 and 2 NRC Docket Numbers: 50: 454 and 455 Gentlemen:

Enclosed for your information is the Monthly Operating Report covering Byron Nuclear Power Station for the period May 1 through May 31,1998.

Sincerely,

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K. L. Kofro Station Manager Byron Nuclear Power Station KLK/JV/rp cc: Regional Administrator - Rlil Byron Project Manager - NRR Senior Resident inspector - Byron ^g3p r r . Office of Nuclear Safety - IDNS

-,vvvJ INPO Records Center B. Lewis, McGraw - Hill Nuclear Publications Dept.

9906150276 990531 PDR R ADOCK 05000454 PDR i

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BYRON NUCLEAR POWER STATION i

UNIT 1 AND UNIT 2 MONTHLY PERFORMANCE REPORT COMMONWEALTH EDISON COMPANY NRC DOCKET NO. 050-454 NRC DOCKET NO. 050455 LICENSE NO. NPF-37 LICENSE NO. NPF-66

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. .' OPERATING DATA REPORT UNIT ONE DOCKET NO. 050-454 UNIT NAME Byron One DATE 06/10/98 l COMPLETED BY J. Voal TELEPHONE (815) 234-5441 x2282 REPORTING PERIOD May,1998 (Month / Year)

MONTH YEAR TO DATE CUMULATIVE

1. Design Electrical Rating (MWe-Net).

The nominal net electrical output of the unit specified by the utility and used for the purpose of plant design. 1,120 N/A N/A

2. Maximum Dependable Capacity (MWe-Net).

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. 1,105 N/A N/A

3. Number of Hours the Reactor Was Critical.

The total number of hours during the gross hours of the reporting period that the reactor was critical. 744 2,037.1 90,717.4

4. Number of Hours the Generator Was On Line.

(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. 744 2,008.9 89,837.4

5. Unit Reserve Shutdown Hours.

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. 0 0 0

6. Net Electrical Energy (MWH).

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. 827,007 2,044,401 89,101,909 (p: \ 98byrltrs \ 980181.wpf-3)

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UNIQUE REPORTING REQUIREMENTS (UNIT 1) for the month of May,1998

1. Safety / Relief valve operations for Unit One. This information is provided pursuant to tho  ;

reporting requirements contained in Technical Specification 6.9.1.8.

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

2. Licensae generated changes to ODCM.

None

3. Indications of failed fuel.

No. Fuel Reliability Indicator: FRI = 3.12 E-5 pCi/cc

4. Licensee Event Reports The following is a tabular summary of all Licensee Event Reports for Byron Nuclear Power Station, Unit One, occurring during the reporting period, May 1,1998 through May 31,1998.

This information is provided pursuant to the reportable occurrence rr porting requirements as set forth in 10CFR 50.73.

Occurrence Licensee Event Report Number Date Title of Occurrence None i

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, OPERATING DATA REPORT  ;

UNIT TWO

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' DOCKET NO. 050-455 UNIT NAME Byron Two DATE 06/10/98 COMPLETED BY J. Voal TELEPHONE (815) 234-5441 I x2282 l

4 REPORTING PERIOD May.1998 (Month / Year)

MONTH YEAR TO DATE CUMULATIVE

1. Design Electrical Rating (MWe-Net).

The nominal net electrical output of the unit specified by the utility and used for the purpose of plant design. 1,120 N/A N/A

2. Maximum Dependable Capacity (MWe-Net).

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. 1,105 N/A N/A

3. Number of Hours the Reactor Was Critical.

The total number of hours during the gross hours of the reporting period that the reactor was critical. 334.2 2,734.7 82,632.4

4. Number of Hours the Generator Was On Line.

(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. 319.5 2,718.6 81,909.9

5. Unit Reserve Shutdown Hours.

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. 0 0 0

6. Net Electrical Energy (MWH).

The gross electrical output of the unit measured at the output terminals of the turbine-Denerator minus the nor nal station service loads during the gross hours of

, the reporting period, expressed in megawatt hours.

l Negative quantities should not be used. 285,318 2,809,829 81,204,691 (p:\98byrltrs\980181.wpf-6)

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UNIQUE REPORTING REQUIREMENTS (UNIT 2)

, for the month of May,1998

1. Safety / Relief valve operations for Unit Two. This information is provided pursuant to the l reporting requirements contained in Technical Specification 6.9.1.8.

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

2. Licensee generated changes to ODCM.

None

3. Indications of failed fuel.

No. Fuel Reliability Indicator: FRI = 6.44 E-5 pCi/cc

4. Licensee E"ent Reports The following is a tabular summary of all Licensee Event Reports for Byron Nuclear Power Station, Unit Two, occurring during the reporting period, May 1,1998 through May 31,1998.

This information is provided pursuant to the reportable occurrence reporting requirements as set forth in 10CFR 50.73.

Occurrence Licensee Event Report Number Date Title of Occurrence None (p:\9Bbyrltrs\980181.wpf-8)