ML100920063

2009 Annual Operating Report

ML100920063
Person / Time
Site:	Summer
Issue date:	03/30/2010
From:	Gatlin T SCANA Corp, South Carolina Electric & Gas Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML100920063 (9)

Text

Thomas D. Gatlin Wce President,Nuclear Operations 803.345.4342 March 30, 2010 A SCANA COMPANY 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 2009 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 and Regulatory Guide 1.16.

Ifthere are any questions, please call at your convenience.

Very truly yours, Thomas D. Gatlin SBR/TDG/cm Attachment c: K. B. Marsh M. L. Thomas S. A. Byme K. M. Sutton J. B. Archie D. L. Abstance N. S. Cams E. Everett J. H. Hamilton Marsh USA, Inc.

R. J. White NRC Resident Inspector K. J. Browne NSRC L. A. Reyes RTS (LTD 292)

R. E. Martin File (818.02-10, RR 8225)

REIRS Project Manager PRSF (RC-1 0-0039)

Virgil C.Summer Station . Post Office Box 88

• Jenkinsville, SC

• 29065.- T(803) 345-5209

VIRGIL C. SUMMER NUCLEAR STATION 2009 ANNUAL OPERATING REPORT

Document Control Desk LTD 292 RC-1 0-0039 Page 2 of 8 PREFACE The 2009 Annual Operating Report for the Virgil C. Summer Nuclear Station is hereby submitted in accordance with Technical Specifications 6.9.1.4 and Regulatory Guide 1.16 under Docket Number 50/395 and Facility Operating License NPF-12.

Document Control Desk LTD 292 RC-10-0039 Page 3 of 8 TABLE OF CONTENTS SECTION TITLE PAGE 1.0 Introduction 4 2.0 Operational Data 4 3.0 Operating Summary 4 4.0 Exposures 6 5.0 Failed Fuel 6 ATTACHMENTS

1. 2009 Man-Rem Report

Document Control Desk LTD 292 RC-1 0-0039 Page 4 of 8 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, 2009, the station operated at a capacity factor of 81.2% (using maximum dependable capacity) and a unit availability of 82.6%. The reactor was critical for a total of 7451.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, the generator remained on line 7239.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and the total gross electrical energy generated for 2009 was 7,148,589 MWH.

3.0 OPERATING

SUMMARY

The Virgil C. Summer Nuclear Station (VCSNS) Unit No.1 operated at 100% power from January 1st through January 9t". On January 9te, power was reduced to 93% for turbine valve testing. Reactor power was restored to 100% on January 9 th.

VCSNS operated at 100% power from January 9th to May 15th. On May 15th power was reduced to approximately 89% to perform turbine valve testing. Reactor power was restored to 100% on May 16tm.

VCSNS operated at 100% power from May 16tm to October 2 nd. On October 2 nd, the plant automatically shutdown due to a Stator Ground relay actuation. One phase of the main generator breaker was found damaged.

Following the repair of the main generator breaker, the plant entered Mode 1 on October 13th. Reactor power was maintained at 55% in order to maintain Recycle Holdup Tank inventory. The plant was taken offline for Refueling Outage Eighteen (RF 18) on October 17th. The plant remained shutdown for the refueling outage until December 9tý at 1304 hours0.0151 days <br />0.362 hours <br />0.00216 weeks <br />4.96172e-4 months <br /> when the reactor was returned to criticality and synchronized to the grid at

Document Control Desk LTD 292 RC-1 0-0039 Page 5 of 8 1851 hours0.0214 days <br />0.514 hours <br />0.00306 weeks <br />7.043055e-4 months <br /> on December 10t. Reactor power was increased to 94.7% on December 13 th at 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br />, then reduced to 80% on December 1 4 th at 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> due to the main turbine control valve #4 not functioning properly. The reactor was manually tripped on December 16 th at 1415 hours0.0164 days <br />0.393 hours <br />0.00234 weeks <br />5.384075e-4 months <br /> due to the failure of the steam dump system, during the power reduction to take the main turbine offline to repair the main turbine control valve #4. The reactor was returned to criticality on December 17 th and synchronized to the grid on December 17th at 2002 hours0.0232 days <br />0.556 hours <br />0.00331 weeks <br />7.61761e-4 months <br />. Reactor power was restored to 100% on December 18th. The plant operated at 100%

power for the remainder of 2009.

Refueling Outage 18 Summary The main generator breaker was opened at 0018 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br /> on October 17th for Refueling Outage 18.

Major work included:

" Diesel Generator "B" governor replacement

• Replacement of the main transformer

• Modified the reactor vessel to redirect the core bypass flow from a down flow to an up flow configuration

• Performed internal inspections of the primary and secondary sides of the Steam Generators

" Replaced and upgraded feedwater control valve positioners

" Replaced and upgraded the Digital Rod Position Indication Control Room display

" Installed additional primary system piping vents in accordance with GL-08-01

" Refurbished the internals of Moisture Separator Reheaters Refueling Outage 18 duration was 54.8 days. Outage planned duration was 45 days. Personnel exposure in 2009 due to the outage was approximately 59.4 Rem, based on electronic dosimeters.

Document Control Desk LTD 292 RC-1 0-0039 Page 6 of 8 Forced Power Reduction >20% Exceeding 4 Hours On October 2 nd, the plant automatically shutdown due to a Stator Ground relay actuation. One phase of the main generator breaker was found damaged. Following the repair of the main generator breaker, the plant entered Mode 1 on October 13th. Reactor power was maintained at 55% in order to maintain Recycle Holdup Tank inventory. The unit was taken off line for RF 18 on October 17th at 0018 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br />. This outage did not result in any single release of radioactivity or single radiation exposure that accounted for more than 10% of the allowable annual values. The duration of the down power was approximately 263.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br />.

On December 16th, the reactor was manually tripped due to a failure of the steam dump system during the power reduction to take the main turbine off line to repair main turbine control valve #4. The reactor returned to criticality on December 17th at 1555 hours0.018 days <br />0.432 hours <br />0.00257 weeks <br />5.916775e-4 months <br /> and the main generator was synchronized to the grid on December 17th at 2002 hours0.0232 days <br />0.556 hours <br />0.00331 weeks <br />7.61761e-4 months <br />. Reactor power was restored to 100% on December 18tm at 2050 hours0.0237 days <br />0.569 hours <br />0.00339 weeks <br />7.80025e-4 months <br />. This outage did not result in any single release of radioactivity or single radiation exposure that accounted for more than 10% of the allowable annual values. The duration of the down power was approximately 29.8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

4.0 EXPOSURES Attachment I lists 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. The exposures reported are estimated doses based on electronic dosimeters.

5.0 FAILED FUEL VCSNS did not have any indications of failed fuel in 2009.

Document Control Desk LTD 292 RC-1 0-0039 Page 7 of 8 ATTACHMENT I TO 2009 ANNUAL REPORT

Document Control Desk LTD 292 RC-1 0-0039 Page 8 of 8 South Carolina Electric & Gas Company V. C. Summer Nuclear Station Regulatory Guide 1.16 Annual Report for 2009 Number of Personnel Over 100 mRem Total Man-Rem Work and Job Function Station utility Contract Station. utility Contract Workers Workers Workers Workers Workers Workers Inservice Maintenance ____ ____ ______ ____

Engineering Personnel 0 0 0 0.010 0.000 0.134 Health Physics Personnel 1 0 10 0.239 0.000 2.296 Maintenance Personnel 1 0 36 0.358 0.000 9.363 Operations Personnel 1 0 2 0.400 0.000 0.476 Supervisory Personnel 0 0 0 0.001 0.000 0.071 Reactor Operations & Surveillance_____

Engineering Personnel 0 0 0 0.006 0.000 0.000 Health Physics Personnel 1 0 1 1.091 0.000 1.370 Maintenance Personnel 3 0 1 2.072 0.000 0.835 Operations Personnel 0 0 0 0.785 0.000 0.023 Supervisory Personnel 0 0 0 0.048 0.000 0.000 Refueling___________________

Engineering Personnel 0 0 2 0.025 0.000 0.413 Health Physics Personnel 0 0 2 0.223 0.000 0.335 Maintenance Personnel 0 0 29 0.470 0.000 8.421 Operations Personnel 0 0 0 0.119 0.000 0.006 Supervisory Personnel 0 0 0 0.021 0.000 0.000 Routine Maintenance ___________

Engineering Personnel 0 0 0 0.118 0.000 0.142 Health Physics Personnel 0 0 0 0.263 0.000 0.140 Maintenance Personnel 9 0 53 4.410 0.000 16.579 Operations Personnel 0 0 0 0.418 0.000 0.082 Supervisory Personnel 0 0 0 0.027 0.000 0.002 Special Maintenance ______

Engineering Personnel 0 0 1 0.000 0.000 0.253 Health Physics Personnel 1 0 2 0.293 0.000 0.962 Maintenance Personnel 7 0 16 2.253 0.000 6.622 Operations Personnel 0 0 1 0.365 0.000 0.156 Supervisory Personnel 0 0 0 0.000 0.000 0.000 Waste Processing ______

Engineering Personnel 0 0 0 0.004 0.000 .0.000 Health Physics Personnel 0 0 0 0.311 0.000 0.022 Maintenance Personnel 0 0 0 0.032 0.000 0.007 Operations Personnel 0 0 0 0.004 0.000 0.000 Supervisory Personnel 0 0 0 0.020 0.000 0.000 Total_______ _ _ _ _

Engineering Personnel 0 0 3 0.163 0.000 0.942 Health Physics Personnel 3 0 15 2.420 0.000 5.125 Maintenance Personnel 20 0 135 9.595 0.000 41.827 Operations Personnel 1 0 3 2.091 0.000 0.743 Supervisory Personnel 0 0 0 10.117 0.000 0.073 Grand Total 24 0 156 114.386 1 0.000 48.710 Total for 2009 with Multiple Badging calculated data - 63.478 Man-Rem