ML031681401

May 2003 Monthly Operating Report for Virgil C. Summer

ML031681401
Person / Time
Site:	Summer
Issue date:	06/09/2003
From:	Byrne S South Carolina Electric & Gas Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML031681401 (5)

Text

Stephen A. Byrne Senior Vice President, Nuclear Operations 803.345.4622 June 9, 2003 A SCANA COMPANY Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555 Attention: Director, Office of Resource Management Ladies and Gentlemen:

Subject:

VIRGIL C. SUMMER NUCLEAR STATION DOCKET NO. 50/395 OPERATING LICENSE NO. NPF-12 MAY MONTHLY OPERATING REPORT Enclosed is the May 2003 Monthly Operating Report for the Virgil C. Summer Nuclear Station Unit No. 1. This submittal is made in accordance with the requirements of Technical Specifications, Section 6.9.1.10.

If there are any questions, please call me at your convenience.

Very truly yours, Stephen A. Byrne SAB/mbb Attachment c: G. H. Halnon INPO Records Center T. G. Eppink (w/o Attachment) J&H Marsh & McLennan R. J. White William G. Wendland (ANI)

L. A. Reyes Pat Haught (Westinghouse)

K. R. Cotton C. W. Adams T. D. Gatlin NSRC NRC Resident Inspector RTS (0-L-99-0350-1)

K. M. Sutton File (818.03-1, RR 4100)

Paulette Ledbetter DMS (RC-03-0119)

ICAQ SCE&G I Virgil (. Summer Hudeor Station

• P . Box 88 - Jenkinsville, South Caroina 29065 T (803) 345.5209 *www.scona.om

Director, Office of Resource Management May Monthly Operating Report RC-03-01 19 Page 1 of 4 ATTACHMENT I AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE June 6, 2003 COMPLETED BY W. H. BELL TELEPHONE (803) 345-4389 May 2003 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (Mwe-Net) (Mwe-Net) 1 983 17 980 2 983 18 980 3 981 19 979 4 982 20 980 5 979 21 981 6 979 22 980 7 979 23 980 8 979 24 980 9 979 25 980 10 979 26 980 11 978 27 980 12 9 28 979 13 0 29 980 14 0 30 980 15 475 31 980 16 970

Director, Office of Resource Management May Monthly Operating Report RC-03-0119 Page 2 of 4 ATTACHMENT II OPERATING DATA REPORT DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE June 6, 2003 COMPLETED BY W. H. BELL TELEPHONE (803) 345-4389 OPERATING STATUS 1 Reporting Period: May 2003 Gross Hours In Reporting Period: 744 2 Currently Authorized Power Level (MWt): 2900 Max. Depend. Capacity (MWe-Net): 966 Design Electrical Rating (MWe-Net): 972.7 3 Power Level to Which Restricted (If Any) (MWe-Net): N/A 4 Reasons for Restrictions: N/A THIS MONTH YR TO DATE CUMULATIVE 5 Number of Hours Reactor Critical 675.7 3554.7 142704.0 6 Reactor Reserve Shutdown Hours 0.0 0.0 0.0 7 Hours Generator On Line 669.5 3548.5 140818.9 8 Unit Reserve Shutdown Hours 0.0 0.0 0.0 9 Gross Thermal Energy Generated (MWH) 1915719 10255333 381085114 10 Gross Electrical Energy (MWH) 673340 3613810 128839699 II Net Electrical Energy Generated (MWH) 646361 3473321 123124020 12 Reactor Service Factor 90.8 98.1 83.9 13 Reactor Availability Factor 90.8 98.1 83.9 14 Unit Service Factor 90.0 97.9 82.7 15 Unit Availability Factor 90.0 97.9 82.7 16 Unit Capacity Factor (Using MDC) 89.9 99.2 79.6 17 Unit Capacity Factor (Using Design) 89.3 98.6 78.5 18 Unit Forced Outage Rate 10.0 2.1 3.1 19 Shutdowns Scheduled Over Next 6 Months (Type, Date, & Duration of Each):

Refueling Outage, October 18, 2003, 36 Days 20 If Shutdown at End of Report Period, Estimated Date of Startup: N/A 21 Units in Test Status (Prior to Commercial Operation): N/A

Director, Office of Resource Management May Monthly Operating Report RC-03-0119 Page 3 of 4 ATTACHMENT III UNIT SHUTDOWNS AND POWER REDUCTION DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE June 6, 2003 COMPLETED BY W. H. BELL TELEPHONE (803) 345-4389 May 2003 NO. DATE TYPE DURATION REASON METHOD CORRECTIVE ACTION/COMMENTS 1 5/12/2003 F 74.5 Hr. A 3 Replaced faulty contacts in the generator field breaker. Also modified circuitry by installing backup contacts.

1 REASON A: Equipment Failure B: Maintenance or Test C: Refueling D: Regulatory Restriction E: Operator Training and License Examination F: Administrative G: Operational Error H: Other (Explain) 2 METHOD 1: Manual 2: Manual Trip/Scram 3: Automatic Trip/Scram 4: Continuation (Use Initial Date) 5: Power Reduction (Duration 0.0) 9: Other (Explain)

SUMMARY

Director, Office of Resource Management May Monthly Operating Report RC-03-0119 Page 4 of 4 ATACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE DOCKET NO. 501395 UNIT V. C. SUMMER I DATE June 6, 2003 COMPLETED BY W. H. BELL TELEPHONE (803) 345-4389 May 2003 At 01:02 on 05/12103 the reactor tripped. The reactor trip was caused by the opening of the main generator breaker which caused a turbine trip which then caused the reactor to trip. The main generator breaker opened due to the failure of contacts in the generator field breaker. This circuitry was repaired and modified by adding a set of backup contacts. Repairs were completed and the reactor became critical at 21:20 on 05/14/03. The main generator breaker was closed at 03:32 on 05/15/03. 100% power was achieved at 12:00 on 05/16/03. V. C. Summer Station operated at 100% power at all other times during the month of May, 2003.