ML030990589

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Annual Operating Report
ML030990589
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 03/28/2003
From: Byrne S
South Carolina Electric & Gas Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
RG-1.016
Download: ML030990589 (11)
v • d • e


Text

-N Stephen A. Byrne Senior Vice President, Nuclear Operations 803 345 4622 A SCANA COMPANY March 28, 2003 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Dear Sir:

Subject:

VIRGIL C. SUMMER NUCLEAR STATION DOCKET NO. 50-395 OPERATING LICENSE NO. NPF-12 ANNUAL OPERATING REPORT Enclosed is the 2002 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.

Ifthere are any questions, please call at your convenience.

Very truly yours, ARCS ~C Stephen A. Byrne SBR/SAB/sr Attachment c: N. 0. Lorick W. G. Wendland T. G. Eppink (w/o attachment) J&H Marsh & McLennan

'R. J. White NRC Resident Inspector L. A. Reyes NSRC K. R. Cotton RTS (0-L-99-01 07)

REIRS Project Manager File (818.02-1 0, RR 8225)

K. M. Sutton DMS (RC-03-0062)

D. L. Abstance 0

SCE&G I Virgil CSummer Nuclear Station

  • P.0.Box SB.

Jenkinsville, South Carolina 29065

  • T(803) 345 5209
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PREFACE The 2002 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.

TABLE OF CONTENTS SECTION TITLE PAGE 1.0 Introduction 1 2.0 Operational Data 1 3.0 Operating Summary 1 4.0 Exposures 3 5.0 Failed Fuel 3 ATTACHMENTS

1. Outages or Power Reductions Caused by Maintenance Activities I. 2002 Man-Rem 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, 2002, the station operated at a capacity factor of 87.2 percent (using maximum dependable capacity) and a unit availability of 87.3 percent. The reactor was critical for a total of 7700 hours0.0891 days <br />2.139 hours <br />0.0127 weeks <br />0.00293 months <br />, the generator remained on line 7646 hours0.0885 days <br />2.124 hours <br />0.0126 weeks <br />0.00291 months <br />, and the total gross electrical energy generated for 2002 was 7677140 MWH.

The station successfully completed its thirteenth refueling outage in 44 days and 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

3.0 OPERATING

SUMMARY

The Virgil C. Summer Nuclear Station (VCSNS) Unit No.1 operated at 100 percent power from January 1 through January 5th . On January 5 th , power was reduced to 98% to support maintenance on the 2B feedwater heater level transmitter. Power th was restored to 100% on January 6 th nd VCSNS operated at 100 percent power from January 6 to February 2 . On February 2nd power was reduced to 98% to support repairs of 1A feedwater level nd transmitter. Power was restored to 100% on February 2 nd th VCSNS operated at 100 percent power from February 2 to February 18 . On February 18th , a turbine load reduction was initiated to support a reduction in power to 98% due to low air pressure on Main Steam Isolation Valves "A" and "C".

Power was restored to 100% on February 1gth.

VCSNS operated at 100% power from February 19th to April 17th. On April 17th power was reduced to 85% to support main steam safety valve testing. On April 20th, the thirteenth refueling outage began with the opening of the main generator breaker. The plant remained shutdown for the refueling outage until June 1st. On June 1 st at 02:46, the reactor became critical. On June 1 st, the reactor automatically tripped due to a spike in intermediate range nuclear instrumentation channel NI 36. A circuit card was replaced and the reactor was restarted. The rd th main generator breaker was closed on June 3 . On June 8 ,the main generator breaker was opened to permit the performance of a main turbine overspeed test.

Annual Operating Report Page 2 of 3 The test was completed and the breaker was closed on June 8 'h. On June 17th, the reactor tripped on lo-lo level in the "A" Steam Generator. The low level was caused by the trip of the "C" main feedwater pump in conjunction with a feedwater digital control system logic error that inadvertently caused the remaining feed pump recirculation valves to go full open. The feed pump and DCS logic were repaired. The main generator breaker was closed on June 1 9th. Power was restored to 100% on June 2 0 th.

VCSNS operated at 100 percent power from June 20th to August 6h. On August 6th power was reduced to 99% due to high circulating water discharge temperature. The circulating water discharge temperature became stable and th reactor power was restored to 100% on August 7 VCSNS operated at 100 percent power from August 7th to September 20th. On September 20th, the plant power was reduced to 92% to support turbine control valve and generator exciter testing. Power was restored to 100% on September 21st.

VCSNS operated at 100% from September 2 1 st to December 1 3 th. On December 13th power was reduced to 92% to support main turbine control valve testing.

Power was restored to 100% on December 14th at 0240. At 0528 on December 14th reactor power was reduced to 98% to support electro-hydraulic control testing and troubleshooting. Testing was completed and power was restored to 100% on December 15th. The plant operated at 100% reactor power for the remainder of 2002.

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

Refuel 13 Summary The main generator was opened at 1112 on April 20 th, for refueling outage 13.

Major work activities included:

  • Reactor Building Spray System Flow Test (10 year ISI)
  • "B" Pressurizer Safety Valve Test

Annual Operating Report Page 3 of 3

  • Reactor Vessel Disassembly, fuel Shuffle and Reassembly

. 'A" Hot Leg Repair Follow-up Weld Inspection and Mechanical Stress Improvement Process (MSIP) on "B" and "C" Hot Legs

& Eighteen month Preventative Maintenance on "A" and "B" Diesel Generators

  • ETBT-0290 Diesel Generator Relay Replacement
  • "A"Component Cooling Heat Exchanger Repair and Plasticoat
  • "B"Component Cooling Heat Exchanger Repair
  • Service Water UT and Visual Inspections, Pipe Replacement and Drain Valve Installation Refuel 13 duration in 2002 was 44 days and 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. Outage planned duration was approximately 34 days. Personnel exposure in 2002 due to the outage was approximately 65 man-rem based on electronic dosimeters.

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. The exposures reported are estimated doses based on electronic dosimeters.

5.0 FAILED FUEL VCSNS did not have any indication of failed fuel in 2002.

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 2002 ANNUAL REPORT

'I V .C.Summer Nuclear Station-Events,

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ATTACHMENT 11 TO 2002 ANNUAL REPORT

SOUTH CAROLINA ELECTRIC AND GAS CO. V.C. SUMMER NUCLEAR STATION PEOPLE COMPUTERIZED EXPOSURE NUCLEAR TRACKING SYSTEM PAGE I CNTRPTPERG116R 10-JAN-2003 07:30 PERSONNEL AND MAN-REM BY WORK AND DUTY FUNCTION FINAL END OF YEAR REPORT FOR 2002 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 16 0 48 7.263 0.001 17.356 OPERATIONS PERSONNEL 1 0 1 0.695 0.000 0.477 HEALTH PHYSICS PERSONNEL 3 0 2 0.911 0.000 1.256 SUPERVISORY PERSONNEL 1 0 0 0.333 0.000 0.000 ENGINEERING PERSONNEL 1 0 1 0.419 0.000 0.358 SPECIAL MAINTENANCE MAINTENANCE PERSONNEL 13 0 35 5.146 0.000 13.461 OPERATIONS PERSONNEL 3 0 2 1.143 0.000 0.420 HEALTH PHYSICS PERSONNEL 2 0 5 0.634 0.000 1.268 SUPERVISORY PERSONNEL 1 0 0 0.336 0.000 0.005 ENGINEERING PERSONNEL 0 0 1 0.127 0.000 0.276 REACTOR OPERATIONS & SURVEILLANCE MAINTENANCE PERSONNEL 1 0 0 1.173 0.000 0.428 OPERATIONS PERSONNEL 2 0 0 1.686 0.000 0.217 HEALTH PHYSICS PERSONNEL 0 0 0 0.706 0.000 0.320 SUPERVISORY PERSONNEL 0 0 0 0.062 0.000 0.009 ENGINEERING PERSONNEL 0 0 0 0.152 0.000 0.012 WASTE PROCESSING MAINTENANCE PERSONNEL 0 0 0 0.023 0.000 0.017 OPERATIONS PERSONNEL 0 0 0 0.006 0.000 0.001 HEALTH PHYSICS PERSONNEL 3 0 1 0.679 0.000 0.207 SUPERVISORY PERSONNEL 0 0 0 0.043 0.000 0.000 ENGINEERING PERSONNEL 0 0 0 0.000 0.000 0.000 IN-SERVICE INSPECTION MAINTENANCE PERSONNEL 0 0 6 0.445 0.000 2.367 OPERATIONS PERSONNEL 0 0 1 0.133 0.000 0.147 HEALTH PHYSICS PERSONNEL 0 0 1 0.010 0.000 0.184 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 19 2.018 0.000 6.497 OPERATIONS PERSONNEL 0 0 1 0.298 0.000 0.207 HEALTH PHYSICS PERSONNEL 0 0 1 0.025 0.000 0.360 SUPERVISORY PERSONNEL 0 0 0 0.004 0.000 0.000 ENGINEERING PERSONNEL 0 0 2 0.004 0.000 0.336 TOTALS MAINTENANCE PERSONNEL 35 0 108 16.068 0.001 40.126 OPERATIONS PERSONNEL 6 0 5 3.961 0.000 1.469 HEALTH PHYSICS PERSONNEL 8 0 10 2.965 0.000 3.595 SUPERVISORY PERSONNEL 2 0 0 0.778 0.000 0.014 ENGINEERING PERSONNEL 1 0 4 0.702 0.000 0.982 GRAND TOTAL 52 0 127 24.474 0.001 46.186 END OF REPORT ***********

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