ML050950350
| ML050950350 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 03/24/2005 |
| From: | Grecheck E Dominion Nuclear Connecticut |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 04-279B, NL&OS/PRW Rev 0 | |
| Download: ML050950350 (2) | |
Text
Dominion Nuclear Connecticut, Inc.
Millstone Power Station Rope Ferry Road Waterford, CT 06385 March 24, 2005 U. S. Nuclear Regulatory Commission Serial No.:
04-279B Attention: Document Control Desk NL&OS/PRW Rev 0 Washington, DC 20555 Docket No.:
50-336 License No.:
DPR-65 DOMINION NUCLEAR CONNECTICUT. INC. (DNC)
MILLSTONE POWER STATION, UNIT 2 10 CFR 50.55A SUPPLEMENT TO REQUEST RR-89-50 ALTERNATIVE TEMPER BEAD WELDING REQUIREMENTS FOR PRESSURIZER WELD PAD DEPOSITS In a letter dated June 14, 2004, and revised in a letter dated January 26, 2005, Dominion Nuclear Connecticut, Inc. (DNC),
requested approval to use alternatives to the requirements of the American Society of Mechanical Engineers (ASME) Code, Section Xl, 1998 Edition, "Alternative Welding Requirements of IWA-4600." Specifically, DNC proposed the use of temper bead welding requirements similar to those of ASME Code Case N-638, which is currently approved for use in accordance with U.S. NRC Regulatory Guide 1.147, Revision 13. In a phone conference with the NRC on March 17, 2005, it was determined that a clarification to Section 4.0, "EXAMINATION," Paragraph a. of to Request RR-89-50 was necessary. Accordingly, prior to applying a weld pad deposit, DNC will perform an ultrasonic examination in accordance with NB-5244 and a liquid penetrant examination of the area to be welded and a band around the area of at least 1-1/2 times the component thickness or 5-inches, whichever is less.
--If you-should have any questions regarding this submittal, please contac r.
Paul R. Willoughby at (804) 273-3572.
Very truly yours, Eugene S. Grecheck Vice President - Nuclear Support Services
Serial No. 04-279B Docket No. 50-336 Clarification to Request RR-89-50 Alternative Temper Bead Welding Requirements Page 2 of 2 Commitments contained within this letter: None.
cc:
U. S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406-1415 Mr. V. Nerses Senior Project Manager U. S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Mail Stop 8C2 Rockville, MD 20852-2738 Mr. S. M. Schneider NRC Senior Resident Inspector Millstone Power Station