ML042520539
| ML042520539 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 09/03/2004 |
| From: | Stephen Monarque NRC/NRR/DLPM/LPD2 |
| To: | Christian D Virginia Electric & Power Co (VEPCO) |
| Monarque S, NRR/DLPM, 415-1544 | |
| References | |
| Download: ML042520539 (5) | |
Text
September 3, 2004 Mr. David A. Christian Sr. Vice President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060-6711
SUBJECT:
SURRY POWER STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION (RAI) REGARDING ANNUAL STEAM GENERATOR INSERVICE INSPECTION
SUMMARY
REPORT
Dear Mr. Christian:
By letter dated February 23, 2004, Virginia Electric and Power Company (VEPCO) submitted the annual steam generator inservice inspection summary report for Surry Power Station, Units 1 and 2. The NRC staff has completed its review of VEPCOs submittal and has determined that additional information is required in order to complete its evaluation.
Our questions are provided in the Enclosure. The NRC staff requests a response to the RAI within 60 days of the date of this letter.
Sincerely,
/RA/
Stephen R. Monarque, Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-280 and 50-281
Enclosure:
As stated
September 3, 2004 Mr. David A. Christian Sr. Vice President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060-6711
SUBJECT:
SURRY POWER STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION (RAI) REGARDING ANNUAL STEAM GENERATOR INSERVICE INSPECTION
SUMMARY
REPORT
Dear Mr. Christian:
By letter dated February 23, 2004, Virginia Electric and Power Company (VEPCO) submitted the annual steam generator inservice inspection summary report for Surry Power Station, Units 1 and 2. The NRC staff has completed its review of VEPCOs submittal and has determined that additional information is required in order to complete its evaluation.
Our questions are provided in the Enclosure. The NRC staff requests a response to the RAI within 60 days of the date of this letter.
Sincerely,
/RA/
Stephen R. Monarque, Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-280 and 50-281
Enclosure:
As stated Distribution:
ACRS KLandis DLPM DPR PUBLIC SMonarque LLund MYoder PDII-1 Rdg.
EDunnington (paper copy)
EHackett Adams Accession Number ML042520539 OFFICE PDII-1/PM PDII-2/LA PDII-1/SC NAME SMonarque EDunnington MJRoss-Lee DATE 9/1/04 9/1/04 9/2/04 OFFICIAL RECORD COPY
REQUEST FOR ADDITIONAL INFORMATION ANNUAL STEAM GENERATOR INSERVICE INSPECTION
SUMMARY
REPORT SURRY POWER STATION, UNITS 1 & 2 VIRGINIA ELECTRIC AND POWER COMPANY DOCKET NUMBERS 50-280 & 50-281 1.
The Plugging/Repair Record table on page 3 of Attachment 1 to your submittal dated February 23, 2004, indicates that 7 tubes are plugged in the B steam generator of Unit 1.
A historical review of the 2000 and 2001 inservice inspection summary reports indicates that 14 tubes were plugged in the B steam generator prior to the 2003 inspection.
Please verify the total number of tubes plugged in Unit 1, Steam Generator B following the 2003 steam generator tube inspections.
2.
The February 23, 2004, submittal indicates that the steam generators at both units have experienced denting in peripheral tubes near the 6th and 7th tube support plates. Please discuss whether new dents were identified during your 2003 inspections and whether existing dents have grown. If existing dents are increasing in magnitude, please discuss how this condition (i.e., increased stresses and associated increase in the propensity for stress corrosion cracking) was addressed in your operational assessment.
3.
The indications identified at the top of tubesheet for hot leg locations R22C82 and R23C82 were attributed to interaction with a foreign object that is believed to no longer be in the area. These indications were identified during an inspection of the critical area of the hot leg top of tubesheet. Please discuss the nature of this critical area (i.e.,
the low velocity region in the middle of the tube bundle). It was assumed that the object was no longer in this area. Please discuss the basis for this conclusion. Specifically address whether a visual inspection was performed in the critical area and the possibility that the part was not in contact with the tube during the eddy current inspections (or does not conduct eddy currents). Please discuss how other forms of degradation, such as intergranular attack and closely spaced pits, were ruled out as possible causes of the indications.
4.
A search of our document management system indicates that the NRC staff does not have a 15-day plugging report on file for the 2003 Unit 2 steam generator tube inspection. Please provide another copy of this report.
Enclosure
Surry Power Station, Units 1 & 2 cc:
Ms. Lillian M. Cuoco, Esq.
Senior Counsel Dominion Resources Services, Inc.
Building 475, 5th Floor Rt. 156, Rope Ferry Road Waterford, Connecticut 06385 Mr. Richard H. Blount, II Site Vice President Surry Power Station Virginia Electric and Power Company 5570 Hog Island Road Surry, Virginia 23883-0315 Senior Resident Inspector Surry Power Station U. S. Nuclear Regulatory Commission 5850 Hog Island Road Surry, Virginia 23883 Chairman Board of Supervisors of Surry County Surry County Courthouse Surry, Virginia 23683 Dr. W. T. Lough Virginia State Corporation Commission Division of Energy Regulation Post Office Box 1197 Richmond, Virginia 23218 Dr. Robert B. Stroube, MD, MPH State Health Commissioner Office of the Commissioner Virginia Department of Health Post Office Box 2448 Richmond, Virginia 23218 Office of the Attorney General Commonwealth of Virginia 900 East Main Street Richmond, Virginia 23219 Mr. Chris L. Funderburk, Director Nuclear Licensing & Operations Support Dominion Resources Services, Inc.
Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060-6711 Mr. Jack M. Davis Site Vice President North Anna Power Station Virginia Electric and Power Company Post Office Box 402 Mineral, Virginia 23117-0402 Mr. William R. Matthews Vice President - Nuclear Operations Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, Virginia 23060-6711