ML20210S609

Monthly Operating Repts for July 1999 for Ccnpp,Units 1 & 2. with

ML20210S609
Person / Time
Site:	Calvert Cliffs
Issue date:	07/31/1999
From:	Katz P, Olsen H BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9908180145
Download: ML20210S609 (7)

Text

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PETE . E. KATE Baltimore Gas and Electric Company Plant General Manag Calvert Cliffs Nuclear Power Plant

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Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410 495-4101 A Member ofthe Constellation Energy Group August 11,1999 l l

U. S. Nuclear Regulatory Commission Washington,DC 20555 ATTENTION: Document Control Desk

SUBJECT:

Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 July 1999 Operating Data Reports The subject reports are being sent to you as required by Technical Specification 5.6.4.

Shuld you have any questions, please contact Mr. Bruce B. Mrowca at (410) 495-3989.

Very truly yours, b.

PEK/EMT/bjd Attachments cc: R. S. Fleishman, Esquire Resident Inspector, NRC J. E. Silberg, Esquire R.1. McLean, DNR A. W. Dromerick, NRC J.11. Walter, PSC S. S. Bajwa, NRC P. Lewis, INPO

11. J. Miller, NRC K. N. Larson, ANI r dhh J

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i OPERATING DATA REPORT Docket No. 50-317 Calvert Cliffs Unit 1 August 9, 1999 Prepared by Herman O. Olsen Telephone : (410) 495-6734 REPORTING PERIOD JULY 1999 DESIGN ELECTRICAL RATING (NET MWe) 845 MAXIMUM DEPENDABLE CAP'Y (NET MWe) 835 {

Year- Cumulative This month to-Date to Date

1. NUMBER OF HOURS REACTOR WAS CRITICAL 566.7 4,736.0 157,727.6

2. HOURS GENERATOR ON L .NE 566.7 4,723.7 154,797.7

3. UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0

4. NET ELECTRICAL ENERGY GENERATED (MWH) 470,939 4,043,938 125,667,298 l

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4 DOCKET NO. 50-317

',CALVERT CLIFFS - UNIT 1

' August 4,1999

SUMMARY

OF OPERATING EXPERIENCE July 1999 The unit began the month at 100% power.

. On 07/17/99 at 0400 power was reduced to 90% for waterbox cleaning. Power was returned to 100% on 07/18/99 at 2040.-

On 07/24/99 at 1438 an automatic reactor trip occurred due to a close proximity lighting strike to Main Transformer U-25000-12. The transformer fault protection circuitry opened the transformer output breakers, which caused a loss ofload trip of the turbine generator. The turbine generator trip in turn caused the reactor trip. The unit entered Mode 3 (hot standby).

Transformer repairs were completed and testing was in progress at the completion of the month. The unit remained in Mode 3.

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• OPERATING DATA REPORT Docket No. 50-318 Calvert Cliffs Unit 2 August 9, 1999 Prepared by Herman O. Olsen Telephone : (410) 4 95 -6734 i

i REPORTING PERIOD JULY 1999 l DESIGN ELECTRICAL RATING (NET MWe) 845 i MAXIMUM DEPENDABLE CAP'Y (NET MWe) 840 Year- Cumulative This month to-Date to Date

1. NUMBER OF HOURS REACTOR WAS CRITICAL 744.0 3,779.6 149,172.7

2. HOURS GENERATOR ON LINE 744.0 3,728.8 147,359.1

3. UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0

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4. NET ELECTRICAL ENERGY GENERATED (MWH) 627,963 3,182,722 120,363,325 l

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pj a DOCKET NO. 50-318 -

l '. ,CALVERT CLIFFS - UNIT 2 August 4,1999 L

SUMMARY

OF OPERATING EXPERIENCE July 1999 The unit operated at 100% power for the entire month, l

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