ML18153A747
| ML18153A747 | |
| Person / Time | |
|---|---|
| Site: | Surry, North Anna  |
| Issue date: | 08/30/1995 |
| From: | Buckley B, Engle L NRC (Affiliation Not Assigned) |
| To: | Ohanlon J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| References | |
| GL-95-03, GL-95-3, TAC-M92255, TAC-M92256, TAC-M92281, TAC-M92282, NUDOCS 9509060343 | |
| Download: ML18153A747 (3) | |
Text
__ Mr. J.P. O'Hanlon
- Sei'fior Vice Preside. - Nuclear
- ~ Virginia Electric and Power Company 5000 Dominion Blvd.
Glen Allen, Virginia 23060 August 30, 19~5)
SUBJECT:
GENERIC LETTER 95-03, "CIRCUMFERENTIAL CRACKING OF STEAM GENERATOR
- TUBES, 11 SURRY POWER STATION, UNITS 1 & 2 AND NORTH ANNA POWER STATION, UNITS 1 AND 2 (TAC NOS. M92281, M92282, M92255, AND M92256)
Dear Mr. O'Hanlon:
On April 28, 1995, the U.S. Nuclear Regulatory Commission issued Generic Letter (GL) 95-03 "Circumferential Cracking of Steam Generator Tubes" which requested addressees to evaluate recent operating experience related to circumferential cracking, justify continued operation until the next scheduled steam generator tube inspections, and to develop plans for the next steam generator tube inspections.
The staff has reviewed the response dated June 27, 1995, provided by Virginia Electric and Power Company for the Surry and North Anna Power Stations.
As a result of the review of your response, the staff has identified areas for which additional information and/or clarification is needed.
The enclosure to this letter contains the information needed for the staff to complete its review of your response to GL 95-03.
Please provide the requested response within 30 days of receipt of this letter.
This request is within the original reporting burden of 350 hours0.00405 days <br />0.0972 hours <br />5.787037e-4 weeks <br />1.33175e-4 months <br /> covered by the Office of Management and Budget clearance number 3150-0011, which expires July 31, 1997.
(Original Signed By)
Bart C. Buckley, Senior Project Manager Project Directorate 11-1 Division of Reactor Projects - 1/11
- Office of Nuclear Reactor Regulation Docket Nos. 50-280, 50-281 and 50-338, 50-339
Enclosure:
As stated cc w/enclosure:
See next page Distribution Docket File PUBLIC PDII-1 RF Sincerely, (Original Signed By)
Leon B. Engle, Project Manager Project Directorate 11-1 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation S. Varga J. Zwolinski OGC 9509060343 950830 PDR ADOCK 05000280 P
D. Verrelli, RII FILENAME - C: AUTOS WPDOCS SUNA.LTR OFFICE LA: PDil-:1.
NAME D
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unn,n on Dl\\TE COPY Yes/No
r-Virginia Electric & Power Company cc:
Mr. William C. Porter, Jr.
County Administrator Louisa County P.O. Box 160 Louisa, Virginia 23093 Michael W. Maupin, Esq.
Hunton and Williams Riverfront Plaza, East Tower 951 E. Byrd Street Richmond, Virginia 23219 Dr. W. T. Lough Virginia State Corporation Commission Division of Energy Regulation P.O. Box 1197 Richmond, Virginia 23209 Old Dominion Electric Cooperative 4201 Dominion Blvd.
Glen Allen, Virginia 23060 Mr. M. L. Bowling, Manager Nuclear Licensing & Programs Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060 Office of the Attorney General Commonwealth of Virginia 900 East Main Street Richmond, Virginia 23219 Senior Resident Inspector North Anna Power Station U.S. Nuclear Regulatory Commission Route 2, Box 78 Mineral, Virginia 23117 Surry Power Plant (1&2)
North Anna Plant (1&2)
Robert B. Strobe, M.D., M.P.H.
State Health Commissioner Office of the Commissioner Virginia Department of Health P.O. Box 2448 Richmond, Virginia 23218 Regional Administrator, RII U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W.,
Suite 2900 Atlanta, Georgia 30323 Mr. J. A. Stall, Manager North Anna Power Station P.O. Box 402 Mineral, Virginia 23117 Mr. J. P. O'Hanlon Senior Vice President - Nuclear Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060 Mr. David Christian, Manager Surry Power Station Post Office Box 315 Surry, Virginia 23883 Chairman Board of Supervisors of Surry County Surry County Courthouse Surry, Virginia 23683
r--~-
r 4,.
- 1.
Surry and North Anna
- 1.
The following areas have been identified as being susceptible to circumferential cracking:
- a.
Expansion transition circumferential cracking
- b.
Small radius U-bend circumferential cracking
- c.
Dented location (including dented TSP) circumferential cracking
- d.
Sleeve joint circumferential crackin_g In your response, area d was not specifically addressed.
In addition, for areas band c, design enhancements intended to reduce the potential for stress-related cracking of the replacement steam generators were referenced; however, specific plant conditions as a result of inspections were not addressed (e.g., denting is not expected as a result of the tube support plate design; however, the results from inspections which indicate that no denting has occurred were not provided).
Please provide the requested information for these areas (and any other areas susceptible to circumferential cracking) per Generic Letter (GL) 95-03.
The staff realizes that some of these areas may not have been addressed since they may not be applicable to your plant; however, this should be clearly stated with the basis for the statement (e.g., no sleeves are installed; therefore, the plant is not susceptible to sleeve joint circumferential cracking).
- 2.
Please provide the expansion criteria to be used if circumferential indications are detected at the expansion transition during the North Anna and Surry steam generator inspections.
Enclosure