ML022100047
| ML022100047 | |
| Person / Time | |
|---|---|
| Site: | Surry, North Anna  |
| Issue date: | 07/22/2002 |
| From: | Christian D Virginia Electric & Power Co (VEPCO) |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 02-333 | |
| Download: ML022100047 (10) | |
Text
VIRGINIA EIE':c,1"RIC ANI) POWER COMPANY RIc*HMomI,, VIR(;INIA 23261 July 22, 2002 United States Nuclear Regulatory Commission Serial No.:
02-333 Attention: Document Control Desk LR/MWH RO Washington, DC 20555-0001 Docket Nos.:
50-280/281 50-338/339 License Nos.: DPR-32/37 NPF-4/7 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION)
SURRY AND NORTH ANNA POWER STATIONS UNITS 1 AND 2 ANNUAL UPDATE INFORMATION LICENSE RENEWAL APPLICATIONS By letter dated May 29, 2001 (Serial Number 01-282), Virginia Electric and Power Company (Dominion) submitted license renewal applications (LRA) for the Surry and North Anna Power Stations pursuant to 10 CFR Part 54. Section 54.21 requires Dominion to report changes to the current licensing basis (CLB) that materially affect the contents of the LRA, including the UFSAR supplement.
These changes are required to be submitted each year and at least 3 months prior to the scheduled completion of the LRA review by the NRC.
Dominion has completed the annual review and concluded that there is one change that materially affects the content of the Surry Power Station LRA.
That change involves the repairs to the reactor vessel head control rod drive penetrations.
The attachment to this letter provides the details of the change and the effect on the content of the Surry LRA. No changes that materially affect the North Anna Power Station LRA were found.
The UFSAR supplements have also been revised. The revised UFSAR supplements for Surry and North Anna are attached to the Draft SER Response to Open Items and Confirmatory Actions, which are being sent to the NRC under a separate transmittal.
Should you have any questions regarding this submittal, please contact Mr. J. E.
Wroniewicz at (804) 273-2186.
Very truly yours, David A. Christian Senior Vice President - Nuclear Operations and Chief Nuclear Officer Attachment Commitments made in this letter: None
SN: 02-333 Docket Nos.: 50-280/281 50-338/339
Subject:
Annual Update Information - License Renewal Applications COMMONWEALTH OF VIRGINIA
) )
COUNTY OF HENRICO
)
The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by David A. Christian who is Senior Vice President and Chief Nuclear Officer of Virginia Electric and Power Company. He has affirmed before me that he is duly authorized to execute and file the foregoing document in behalf of that Company, and that the statements in the document are true to the best of his knowledge and belief.
Acknowledged before me this 22nd day of July, 2002.
My Commission Expires: March 31, 2004.
Notary Public (SEAt)
Serial No.: 02-333 SPS/NAPS LR - Annual Update cc page 1 of 4 cc:
U. S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW Suite 23T85 Atlanta, GA 30303-8931 Mr. M. J. Morgan NRC Senior Resident Inspector North Anna Power Station Mr. R. A. Musser NRC Senior Resident Inspector Surry Power Station Mr. J. E. Reasor, Jr.
Old Dominion Electric Cooperative Innsbrook Corporate Center 4201 Dominion Blvd.
Suite 300 Glen Allen, VA 23060 Ms. Ellie Irons, EIR Program Manager Virginia Dept. of Environmental Quality 629 East Main St., 6th FI Richmond, VA 23219 Mr. David Paylor, Program Coordinator Virginia Dept. of Environmental Quality P.O. Box 10009 Richmond, VA 23240-0009 Mr. Joe Hassell, Environmental Manager Virginia Dept. of Environmental Quality Water Division P.O. Box 10009 Richmond, VA 23240-0009 Mr. Frank Daniel, Regional Director Virginia Dept. of Environmental Quality Tidewater Regional Office 5636 Southern Blvd.
Serial No.: 02-333 SPS/NAPS LR - Annual Update cc page 2 of 4 Mr. Gregory Clayton, Regional Director Virginia Dept. of Environmental Quality Northern Virginia Regional Office 13901 Crown Ct.
Woodbridge, VA 22193 Mr. Frank Fulgham, Program Manager Virginia Dept. of Agriculture & Consumer Services Office of Plant & Pest Services 1100 Bank St.
Richmond, VA 23219 Mr. David Brickley, Agency Director Virginia Dept. of Conservation & Recreation 203 Governor St.
Richmond, VA 23219 Mr. William Woodfin, Director Virginia Dept. of Game & Inland Fisheries 4010 West Broad St.
Richmond, VA 23230 Mr. Robert Hicks, Director Virginia Dept. of Health Office of Environmental Health Services 1500 East Main St., Room 115 Richmond, VA 23219 Ms. Kathleen S. Kilpatrick, Director Virginia Dept. of Historic Resources State Historic Preservation Office 2801 Kensington Ave.
Richmond, VA 23221 Dr. Ethel Eaton, Archeologist Senior Virginia Dept. of Historic Resources State Historic Preservation Office 2801 Kensington Ave.
Richmond, VA 23221
Serial No.: 02-333 SPS/NAPS LR - Annual Update cc page 3 of 4 Mr. Robert W. Grabb, Assistant Commissioner Virginia Marine Resources Commission 2600 Washington Ave.
Newport News, VA 23607 Dr. John Olney, Associate Professor Virginia Institute of Marine Science School of Marine Science Gloucester Point, VA 23062 Mr. John Simkins Virginia Dept. of Transportation Environmental Division 1401 East Broad St.
Richmond, VA 23219 Mr. Robert Burnley Virginia Economic Development Partnership 901 East Byrd St.
Richmond, VA 23219 Mr. William F. Stephens, Director Virginia State Corporation Commission Division of Energy Regulation 1300 East Main St., 4th Fl., Tyler Bldg.
Richmond, VA 23219 Mr. Michael Cline, State Coordinator Commonwealth of Virginia Department of Emergency Management 10501 Trade Rd.
Richmond, VA 23236-3713 Mr. Terry Lewis, County Administrator P.O. Box 65 Surry, VA 23883 Mr. Lee Lintecum Louisa County Administrator P.O. Box 160 Louisa, VA 23093
Serial No.: 02-333 SPS/NAPS LR - Annual Update cc page 4 of 4 Mr. Douglas C. Walker Acting Spotsylvania County Administrator P.O. Box 99 Spotsylvania, VA 22553 Ms. Brenda G. Bailey, County Administrator P.O. Box 11 Orange, VA 22960 Chairman Reeva Tilley Virginia Council on Indians P.O. Box 1475 Richmond, VA 23218 Mr. Don Lillywhite, Director Economics Information Services Virginia Employment Commission State Data Center 703 East Main St., Room 213 Richmond, VA 23219 Mr. Alan Zoellner Government Information Department Swem Library College of William and Mary Landrum Dr.
P.O. Box 8794 Williamsburg, VA 23187-8794 Mr. Walter Newsome Government Information Resources Alderman Library University of Virginia 160 McCormick Rd.
P.O. Box 400154 Charlottesville, VA 22904-4154
Docket Nos. 50-280/281 50-338/339 Serial No.: 02-333 Attachment Page 1 of 3 Attachment License Renewal - Annual Update Information Serial No.02-333 Surry and North Anna Power Stations, Units 1 and 2 License Renewal Applications Virginia Electric and Power Company (Dominion)
Docket Nos. 50-280/281 50-338/339 Serial No.: 02-333 Attachment Page 2 of 3 Modifications to the Surry Unit 1 Reactor Vessel Closure Head The Surry LRA currently states in Section 3.1.2, Reactor Vessel, that carbon steel and low-alloy steel surfaces of the reactor vessel pressure boundary subcomponents in contact with borated water are clad with a weld overlay of stainless steel for corrosion control. LRA Table 3.1.2-1, Reactor Vessels, identifies the subcomponent Closure Head Dome and Flange (and cladding) as carbon steel and low-alloy steel exposed externally to air and borated water leakage. The stainless steel cladding is exposed to treated water internally.
CLB Change:
The Surry Unit 1 reactor vessel closure head has been modified to repair six control rod drive penetration sleeves. The repair resulted in a band of ferritic low-alloy steel closure head material being exposed to the treated (borated) water environment of the primary coolant system at these penetration locations.
A detailed corrosion evaluation was performed for the material / environment created by this modification. This evaluation concluded that a conservative corrosion rate for the carbon steel and low-alloy steel material was 0.0032 inches/year.
Based on the thickness of the closure head and the specific location of the low alloy steel exposure to primary coolant water, this rate of material removal is considered insignificant. This information was documented in the revised Relief Requests SR-27, 28, 32, and 33 included in Dominion letter Serial No. 01-637A, dated October 30, 2001. Based on this evaluation there is reasonable assurance that the pressure boundary function of the reactor vessel closure head will be maintained during the period of extended operation. As a result, no additional aging management activity other than the Chemistry Control Program for Primary Systems is required to manage the effect of loss of material for the low-alloy steel in the primary coolant water environment.
In addition, reactor vessel head and control rod drive penetration inspections are being conducted during each refueling outage. These additional inspections are a result of the concern for cracking due to PWSCC and wall loss due to boric acid deposits/leakage. These ongoing vessel head inspection activities undertaken as a result of NRC Bulletin 2001-01 will be monitored to determine the need for additional or augmented inspections. Furthermore, Dominion has initiated replacement of the reactor vessel heads for all four Surry and North Anna Units currently scheduled to be complete in 2005. This will restore cladding in the area of the penetrations and eliminate the carbon steel and low alloy steel exposure to treated borated water internally for the reactor vessel.
Docket Nos. 50-280/281 50-338/339 Serial No.: 02-333 Attachment Page 3 of 3 Changes to the Surry LRA:
- p. 3-12, Section 3.1.2 - Add "except for six Surry Unit 1 reactor vessel closure head control rod drive penetration locations" to identify that these locations are not clad.
- p. 3-13, under Aging Effects Requiring Management - Add an item "Loss of material from un-clad carbon steel and low-alloy steel exposed to treated water environment."
- p. 3-95, Table 3.1.2 Add a material group line item for subcomponent Closure Head Dome and Flange for Carbon Steel and Low-alloy Steel in Treated Water (internal) with Loss of Material aging effect and Chemistry Control Program for Primary Systems as the aging management activity. Also, add a footnote referenced from the Aging Management Activity column entry as follows: "A detailed corrosion evaluation has been performed for the exposure of low-alloy steel closure head locations to treated (borated) water. This evaluation concluded that a conservative estimate of the corrosion rate is 0.0032 inches/year. This corrosion rate results in insignificant loss of material thickness for the period of extended operation and the pressure boundary function of the closure head will not be affected. "