ML020990381

Annual Operating Report for Virgil C. Summer Nuclear Station for 2001

ML020990381
Person / Time
Site:	Summer
Issue date:	03/28/2002
From:	Byrne S South Carolina Electric & Gas Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML020990381 (10)

Text

Stephen A. Byrne Senior Vice President,Nuclear Operations 803-345.4622 A SCANA COMPANY March 28, 2002 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Subject:

VIRGIL C. SUMMER NUCLEAR STATION DOCKET NO. 50-395 OPERATING LICENSE NO. NPF-12 ANNUAL OPERATING REPORT Enclosed is the 2001 Annual Operating Report for the South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station Unit No. 1. This report is being submitted in accordance with Technical Specifications 6.9.1.4, 6.9.1.5, and Regulatory Guide 1.16.

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

Ve truly yours, Stephen A. Byrne SBR/SAB/sr Attachment c: N. 0. Lorick D. L. Abstance T. G. Eppink (w/o attachment) W. G. Wendland R. J. White J&H Marsh & McLennan W. R. Higgins NRC Resident Inspector L. A. Reyes NSRC G. E. Edison RTS (0-L-99-0107)

REIRS Project Manager File (818.02-10, RR 8225)

K. M. Sutton DMS(RC-02-0042)

SCE&G I Virgil C.Summer Nuclear Station

• P.0. Box 88 - Jenkinsville, South Carolina 29065 .T(803) 345.5209 , www.scanai.,om

PREFACE The 2001 Annual Operating Report for the Virgil C. Summer Nuclear Station is hereby submitted in accordance with Technical Specifications 6.9.1.4, 6.9.1.5, and Regulatory Guide 1.16 under Docket Number 50/395 and Facility Operating License NPF-12.

VIRGIL C. SUMMER NUCLEAR STATION 2001 ANNUAL OPERATING REPORT

ANNUAL OPERATING REPORT

1.0 INTRODUCTION

The Virgil C. Summer Nuclear Station (VCSNS) utilizes a pressurized water reactor rated at 2900 MWT. The maximum dependable capacity is 966 Mwe.

The station is located approximately 26 miles northwest of Columbia, South Carolina.

2.0 OPERATIONAL DATA For the reporting period of January 1 through December 31, 2001, the station operated at a capacity factor of 79.9 percent (using maximum dependable capacity) and a unit availability of 81.0 percent. The reactor was critical for a total of 7295.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, the generator remained on line 7096.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br />, and the total gross electrical energy generated for 2001 was 7,039,330 MWH.

The station successfully completed its twelfth refueling outage in 147 days and 11.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />.

3.0 OPERATING

SUMMARY

The Virgil C. Summer Nuclear Station (VCSNS) Unit No.1 was shutdown for the entire month of January. The shutdown was due to the extension of the twelfth refueling outage. The outage was extended due to repairs to the "A" Loop of the Reactor Coolant System Hot Leg Pipe. Repairs were completed by the end of February and the reactor became critical on February 28th . The reactor remained critical until March 1 st when the reactor was manually tripped. The manual trip was due to a problem with the rod control system. Rod control was repaired and the reactor became critical on March 2 nd. Physics testing was completed on March 3rd at which time power escalation began.

On March 9th, while at approximately 98% power, a reduction to 90% power commenced to secure the "C" Main Feedwater Pump to support maintenance.

The pump was repaired and power escalation back to 98% power began on March 9 th. On March 1 0 th power was reduced to 90% power due to the lifting of the deaerator storage tank relief valve. Repairs were completed and power was restored to 100% power on March 1 1th VCSNS operated at 100 percent power from March 11 th to May 18 th On May 1 8 th the plant power was reduced to 88% to support maintenance on the "B" and "C" Main Feedwater Pumps as well as the "D" Feedwater Booster Pump. The plant remained at 88% power until the repairs were completed. Power was restored to st 100% power on May 21 s

Annual Operating Report Page 2 of 3 VCSNS operated at 100 percent power from May 2 1 st to June 1 st On June 1 st the plant power was reduced and the Main Generator Breaker was opened. This was done to support repairs of steam generator shell side steam leakage from manways and inspection ports. Repairs were completed and the power was restored to 100% power on June 9th.

VCSNS operated at 100 percent power from June 8 to June 23rd. On June 2 3 rd the main generator was opened to support a plant shutdown to repair two Combined Intercept Valves (CIV). At full power two of the turbine generator CIV valves closed. The CIV valves were repaired and the main generator breaker was closed on June 23rd. Following the repair of the CIV valves, the plant was unable to achieve full power due to high temperatures on disconnect switch 8902 in the plant switchyard. The main generator breaker was opened on June 30h . The switch was replaced and the main generator breaker was closed on June 30th.

Power was increased to 98 percent power on July 1 st where it was held pending repairs to the level transmitters on "A" and "B" Reheater Drain Tanks. The level transmitters were repaired and power was restored to 100 percent power on July 10th VCSNS operated at 100 percent power from July 10th to July 2 1 st. On July 21st a plant shutdown began to conduct repairs to the main generator air system. The main generator breaker was opened on July 2 1 st. The reactor remained critical at approximately two percent power. On July 2 4 th, all repairs were completed and the main generator breaker was closed. Power was restored to 100% power on July th 24 VCSNS operated at 100 percent power from July 24th to September 4 th. On th September 4 , power was reduced to 90% power to support maintenance on the "A" Main Feedwater Pump keep warm line. The keep warm line had developed a steam leak which required the pump to be secured for repair. Repairs were completed and power was stored to 100% on September 6 th.

VCSNS operated at 100 percent power from September 6 to October 13th. On th October 13 , power was reduced to 98% power due to a failure of one of the two No. 1B feedwater heater level transmitters. The power reduction was initiated as a conservative action to provide control room operators time to react to the potential failure of the transmitter that remained in service. A failure did not occur and after repairs were completed on the failed transmitter, power was restored to 100% on October 15th.

VCSNS operated at 100 percent power from October 15 to November 13 th. On November 13 1th, power was reduced to 98% to support maintenance to replace one

Annual Operating Report Page 3 of 3 Magnetrol level transmitter on each high pressure feedwater heater with a new Rosemount transmitter. Maintenance was completed on November 16th and th power was restored to 100% on November 20th.

VCSNS operated at 100 percent power from November 20th to December 7th. On th December 7 , power was reduced to 91% to support planned main turbine valve testing. Testing was completed and power was restored to 100% on December th 8.

VCSNS operated at 100 percent power from December 8th to December 9th. On December 9th, power was reduced to 98% to support repairs to the No. 1B feedwater heater level transmitter probe. Repairs were completed and the power was restored to 100% on December 9th . The plant operated at 100% power for the remainder of 2001.

Maintenance Attachment I, "Power Reductions Caused by Maintenance Activities," provides more detailed information on operating time lost as a result of maintenance activities.

4.0 EXPOSURES Attachment II consists of tables which list the number of station, utility, and other personnel (including contract personnel) receiving exposures greater than 100 mrem/year and their associated man-rem exposure according to work and job function.

5.0 FAILED FUEL VCSNS has not had indication of failed fuel in 2001.

The reactor coolant system specific activity did not exceed the 1.0 microcuries per gram dose equivalent iodine-131 specific activity or the 100/E microcuries per gram limits of Technical Specification 3.4.8, for this reporting period.

ATTACHMENT I TO 2001 ANNUAL REPORT

V. C. Summer Nuclear Station Events Outage or Power Reductions Caused by Maintenance Activities Net Capacity Date Time Start Cause of Event Date Time Finish Duration MWe Type 01/0112001 0001 Hrs Refuel 12 Outage 03/03/2001 1310 Hrs 1477.2 Hrs 0 Unplanned 03/09/2001 1700 Hrs Main Feed Pump 03/09/2001 2140 Hrs 4.7 Hrs 842 Unplanned 03/1012001 1644 Hrs DA Relief Valve 03/11/2001 0300 Hrs 10.3 Hrs 877 Unplanned 06/18/2001 1530 Hrs 'B' and 'C' Main FW Repair and 'D' Feedwater 05/21/2001 1945 Hrs 60.8 Hrs 861 Maintenance Booster Pump MO 06/01/2001 0925 Hrs Repair SG Bolted Connections 06/07/2001 2025 Hrs 155.0 Hrs 0/Avg. 112 Unplanned 06/23/2001 2330 Hrs FW Heater Level Transmitters 06/29/2001 0025 Hrs 120.9 Hrs 870/919 Unplanned 06/29/2001 0025 Hrs Operate with OCB Disconnect 06/29/2001 2200 Hrs 21.6 Hrs 870/919 Unplanned 06/29/2001 0025 Hrs Repair OCB Disconnect 06/30/2001 2400 Hrs 24.0 Hrs 0/Avg. 246 Unplanned 07/01/2001 1300 Hrs FW Heater Level Transmitter 07/10/2001 1020 Hrs 213.3 Hrs 952 Unplanned 07/21/2001 0635 Hrs Repair Gen. Breaker Air System 07/25/2001 0100 Hrs 91.6 Hrs 0/Avg. 185 Unplanned 09/04/2001 0445 Hrs Leak on Recir Line 'A' FW Pump 09/06/2001 0645 Hrs 50.0 Hrs 874 Unplanned 10/13/2001 1305 Hrs FW Heater 1B Level Transmitter Problem 10/15/2001 1545 Hrs 50.7 Hrs 962 Unplanned 11/13/2001 2222 Hrs FW Heater Transmitter Problem 11/16/2001 2300 Hrs 72.6 Hrs 955 Planned 12/09/2001 0925 Hrs FW Heater Level Transmitter 12/09/2001 2102 Hrs 11.6 Hrs 957 Unplanned

ATTACHMENT II TO 2000 ANNUAL REPORT

SOUTH CAROLINA ELECTRIC AND GAS CO. V.C. SUMMER NUCLEAR STATION PEOPLE COMPUTERIZED EXPOSURE NUCLEAR TRACKING SYSTEM PAGE 1 CNTRPTPERGII6R 15-JAN-2002 15:47 PERSONNEL AND MAN-REM BY WORK AND DUTY FUNCTION FINAL END OF YEAR REPORT FOR 2001 NUMBER OF PERSONNEL OVER 100mREM TOTAL MAN-REM STATION UTILITY CONTRACT STATION UTILITY CONTRACT WORK AND JOB FUNCTION WORKERS WORKERS WORKERS WORKERS WORKERS WORKERS ROUTINE MAINTENANCE MAINTENANCE PERSONNEL 2 0 0 1.740 0.003 1.374 OPERATIONS PERSONNEL 0 0 1 0.627 0.000 0.365 HEALTH PHYSICS PERSONNEL 2 0 0 0.676 0.000 0.109 SUPERVISORY PERSONNEL 0 0 0 0.123 0.000 0.000 ENGINEERING PERSONNEL 0 0 0 0.086 0.000 0.055 SPECIAL MAINTENANCE MAINTENANCE PERSONNEL 16 0 70 9.859 0.027 40.877 OPERATIONS PERSONNEL 3 0 3 1.013 0.000 1.608 HEALTH PHYSICS PERSONNEL 6 0 9 2.394 0.000 2.309 SUPERVISORY PERSONNEL 0 0 0 0.227 0.000 0.022 ENGINEERING PERSONNEL 3 0 5 0.944 0.000 3.944 REACTOR OPERATIONS & SURVEILLANCE MAINTENANCE PERSONNEL 0 0 0 0.518 0.000 0.243 OPERATIONS PERSONNEL 1 0 1 1.174 0.000 0.371 HEALTH PHYSICS PERSONNEL 0 0 1 0.934 0.000 0.261 SUPERVISORY PERSONNEL 1 0 0 0.165 0.000 0.005 ENGINEERING PERSONNEL 0 0 0 0.148 0.001 0.018 WASTE PROCESSING MAINTENANCE PERSONNEL 0 0 0 0.030 0.000 0.016 OPERATIONS PERSONNEL 0 0 0 0.016 0.000 0.008 HEALTH PHYSICS PERSONNEL 3 0 1 0.848 0.000 0.265 SUPERVISORY PERSONNEL 0 0 0 0.038 0.000 0.000 ENGINEERING PERSONNEL 0 0 0 0.000 0.000 0.000 IN-SERVICE INSPECTION MAINTENANCE PERSONNEL 0 0 0 0.000 0.000 0.004 OPERATIONS PERSONNEL 0 0 0 0.008 0.000 0.000 HEALTH PHYSICS PERSONNEL 0 0 0 0.000 0.000 0.000 SUPERVISORY PERSONNEL 0 0 0 0.000 0.000 0.000 ENGINEERING PERSONNEL 0 0 0 0.000 0.000 0.000 REFUELING MAINTENANCE PERSONNEL 5 0 16 1.439 0.000 4.034 OPERATIONS PERSONNEL 1 0 0 0.510 0.000 0.086 HEALTH PHYSICS PERSONNEL 1 0 1 0.216 0.000 0.427 SUPERVISORY PERSONNEL 0 0 0 0.004 0.000 0.000 ENGINEERING PERSONNEL 0 0 1 0.053 0.000 0.242 TOTALS MAINTENANCE PERSONNEL 23 0 86 13.586 0.030 46.548 OPERATIONS PERSONNEL 5 0 5 3.348 0.000 2.438 HEALTH PHYSICS PERSONNEL 12 0 12 5.068 0.000 3.371 SUPERVISORY PERSONNEL 1 0 0 0.557 0.000 0.027 ENGINEERING PERSONNEL 3 0 6 1.231 0.001 4.259 GRAND TOTAL 44 0 109 23.790 0.031 56.643 END OF REPORT ***********