ML060330744
| ML060330744 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 02/03/2006 |
| From: | Milano P Plant Licensing Branch III-2 |
| To: | Spina J Calvert Cliffs |
| Milano P, NRR/DLPM ,415-1457 | |
| References | |
| TAC MC9583, TAC MC9584 | |
| Download: ML060330744 (4) | |
Text
February 3, 2006Mr. James A. Spina, Vice PresidentCalvert Cliffs Nuclear Power Plant, Inc.
Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs ParkwayLusby, MD 20657-4702
SUBJECT:
CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 -REQUEST FOR ADDITIONAL INFORMATION REGARDING RELIEF REQUEST TO USE ALTERNATIVE TECHNIQUES FOR REPAIR OF WELDEDNOZZLES (TAC NOS. MC9583 AND MC9584)
Dear Mr. Vanderheyden:
By letter dated December 21, 2005 (Agencywide Documents Access and Management System(ADAMS) Accession No. ML053620026), Calvert Cliffs Nuclear Power Plant, Inc. (the licensee)submitted a relief request to use alternative repair and examination techniques for repair of unacceptable indications in welded nozzles at Calvert Cliffs Nuclear Power Plant, Unit Nos. 1and 2 (Calvert Cliffs). Specifically, the licensee requested relief from certain requirements ofAmerican Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),
Section XI, concerning repair or replacement activities for pressure-retaining welds subject to Article IWA-4000. The licensee has proposed to use a half-nozzle design to repair any existing hot leg instrument nozzle with identified leakage using the techniques based on Westinghouse Electric Company Report WCAP-15973-P, Revision 1, "Low-Alloy Steel Component Corrosion Analysis Supporting Small-Diameter Alloy 600/690 Nozzle Repair/Replacement Program." In its safety evaluation (SE) dated January 12, 2005, approving WCAP-15973-P, the Nuclear Regulatory Commission (NRC) staff stated that half-nozzle repairs are considered alternativesto the ASME Code. Therefore, the licensee shall submit the required information in WCAP-15973-P, by the conditions of the SE, as a relief request in accordance with Section 50.55a of Part 50 of Title 10 of the Code of Federal Regulations
.The NRC staff has reviewed the information provided in support of the relief request and hasdetermined that additional information is needed. In this regard, the NRC staff requests the licensee submit a copy of (1) the welding procedure specification(s) that will be used for weldbuildup and attachment welds, and (2) a description of any non-destructive examination that willbe performed for final acceptance of each repaired instrument nozzle using the alternative technique. This request for additional information was discussed with your staff on February 2, 2006, and it was agreed that your response would be provided within 30 days from the date of this letter.
J. Spina- 2 -If you should have any questions regarding this request, please contact me at 301-415-1457.Sincerely,/RA/Patrick D. Milano, Senior Project ManagerPlant Licensing Branch I-1 Division of Operating reactor Licensing Office of Nuclear Reactor RegulationDocket Nos. 50-317 and 50-318 cc: See next page
ML060330744OFFICELPLI-1/PMLPLI-1/LACFEB/BCLPLI-1/BCNAMEPMilanoSLittleKGrussRLaufer DATE02/01/0602/02/0602/02/0602/03/06 Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 cc:
PresidentCalvert County Board of Commissioners 175 Main Street Prince Frederick, MD 20678Mr. Carey Fleming, EsquireSr. Counsel - Nuclear Generation Constellation Generation Group, LLC 750 East Pratt Street, 17 th floorBaltimore, MD 21202Mr. Louis LarragoiteCalvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs ParkwayLusby, MD 20657-4702Resident InspectorU.S. Nuclear Regulatory Commission
P.O. Box 287 St. Leonard, MD 20685Mr. R. I. McLean, ManagerNuclear Programs Power Plant Research Program Maryland Department of Natural Resources 580 Taylor Avenue (B wing, 3rd floor)
Tawes State Office Building Annapolis, MD 21401Regional Administrator, Region IU.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406Ms. Kristen A. Burger, EsquireMaryland People's Counsel 6 St. Paul Centre Suite 2102 Baltimore, MD 21202-1631Ms. Patricia T. Birnie, EsquireCo-Director Maryland Safe Energy Coalition P.O. Box 33111 Baltimore, MD 21218Mr. Roy HickokNRC Technical Training Center 5700 Brainerd Road Chattanooga, TN 37411-4017