ML042360228
| ML042360228 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 09/17/2004 |
| From: | Marsh L NRC/NRR/DLPM |
| To: | O'Brien D State of VT, Dept of Public Service |
| Skay D, NRR/DLPM, 415-1322 | |
| Shared Package | |
| ML042360245 | List: |
| References | |
| FOIA/PA-2005-0031, TAC MC3407, Y020040126 | |
| Download: ML042360228 (5) | |
Text
September 17, 2004 Mr. David OBrien, Commissioner State of Vermont Department of Public Service 112 State Street Drawer 20 Montpelier, VT 05620-2601
Dear Mr. OBrien:
I am responding to your letter dated June 8, 2004, to the U.S. Nuclear Regulatory Commission (NRC), in which you requested the NRC perform independent calculations as part of its review of the of extended power uprate (EPU) license amendment request from Entergy Nuclear Vermont Yankee, LLC and Entergy Nuclear Operations, Inc. for the Vermont Yankee Nuclear Power Station (VYNPS). You requested that the NRC perform calculations in three specific areas: (1) steam dryer analysis, (2) credit for containment overpressure, and (3) flow-induced vibration. As you noted in your letter, the NRCs review standard for EPUs, RS-001, Section 2.1, includes the following guidance regarding when audits and/or independent calculations should be performed:
Perform audits and/or independent calculations as deemed necessary and appropriate to support review of the licensees application. In determining the need for performing audits and/or independent calculations, consider the following:
confidence of the NRC staff in the models and/or methods used by the licensee confidence of the NRC staff in the analysis results familiarity of the NRC staff with the models and/or methods used by the licensee prior use of the models and/or methods for similar plant designs and operating conditions and the NRC staffs experience related to such use NRC staff experience with the impact of proposed changes on analysis results available margin versus level of uncertainty in analysis results efficiency gains that may result from performing audits and/or independent calculations The NRC will perform independent calculations as appropriate, and in accordance with the guidance in RS-001.
You also requested that the NRC perform these calculations as part of the engineering assessment inspection. Please note that the scope of the engineering inspection does not include the performance of independent calculations.
D. OBrien Thank you for informing us of your interest in our review of the Vermont Yankee EPU request.
We will take your recommendations under advisement as we perform our review of the proposed EPU. A discussion of the independent calculations performed will be provided in the safety evaluation documenting our review.
Sincerely,
/RA/
Ledyard Marsh, Director Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-271 cc: See next page
Vermont Yankee Nuclear Power Station cc:
Regional Administrator, Region I U. S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406-1415 Mr. David R. Lewis Shaw, Pittman, Potts & Trowbridge 2300 N Street, N.W.
Washington, DC 20037-1128 Ms. Christine S. Salembier, Commissioner Vermont Department of Public Service 112 State Street Montpelier, VT 05620-2601 Mr. Michael H. Dworkin, Chairman Public Service Board State of Vermont 112 State Street Montpelier, VT 05620-2701 Chairman, Board of Selectmen Town of Vernon P.O. Box 116 Vernon, VT 05354-0116 Operating Experience Coordinator Vermont Yankee Nuclear Power Station 320 Governor Hunt Road Vernon, VT 05354 G. Dana Bisbee, Esq.
Deputy Attorney General 33 Capitol Street Concord, NH 03301-6937 Chief, Safety Unit Office of the Attorney General One Ashburton Place, 19th Floor Boston, MA 02108 Ms. Deborah B. Katz Box 83 Shelburne Falls, MA 01370 Ms. Carla A. White, RRPT, CHP Radiological Health Vermont Department of Health P.O. Box 70, Drawer #43 108 Cherry Street Burlington, VT 05402-0070 Mr. James M. DeVincentis Manager, Licensing Vermont Yankee Nuclear Power Station P.O. Box 0500 185 Old Ferry Road Brattleboro, VT 05302-0500 Resident Inspector Vermont Yankee Nuclear Power Station U. S. Nuclear Regulatory Commission P.O. Box 176 Vernon, VT 05354 Director, Massachusetts Emergency Management Agency ATTN: James Muckerheide 400 Worcester Rd.
Framingham, MA 01702-5399 Jonathan M. Block, Esq.
Main Street P.O. Box 566 Putney, VT 05346-0566 Mr. John F. McCann Director, Nuclear Safety Assurance Entergy Nuclear Operations, Inc.
440 Hamilton Avenue White Plains, NY 10601 Mr. Gary J. Taylor Chief Executive Officer Entergy Operations 1340 Echelon Parkway Jackson, MS 39213
Vermont Yankee Nuclear Power Station cc:
Mr. John T. Herron Sr. VP and Chief Operating Officer Entergy Nuclear Operations, Inc.
440 Hamilton Avenue White Plains, NY 10601 Mr. Danny L. Pace Vice President, Engineering Entergy Nuclear Operations, Inc.
440 Hamilton Avenue White Plains, NY 10601 Mr. Brian OGrady Vice President, Operations Support Entergy Nuclear Operations, Inc.
440 Hamilton Avenue White Plains, NY 10601 Mr. Michael J. Colomb Director of Oversight Entergy Nuclear Operations, Inc.
440 Hamilton Avenue White Plains, NY 10601 Mr. John M. Fulton Assistant General Counsel Entergy Nuclear Operations, Inc.
440 Hamilton Avenue White Plains, NY 10601 Mr. Jay K. Thayer Site Vice President Entergy Nuclear Operations, Inc.
Vermont Yankee Nuclear Power Station P.O. Box 0500 185 Old Ferry Road Brattleboro, VT 05302-0500 Mr. Kenneth L. Graesser 38832 N. Ashley Drive Lake Villa, IL 60046 Mr. James Sniezek 5486 Nithsdale Drive Salisbury, MD 21801 Mr. Ronald Toole 1282 Valley of Lakes Box R-10 Hazelton, PA 18202 Ms. Stacey M. Lousteau Treasury Department Entergy Services, Inc.
639 Loyola Avenue New Orleans, LA 70113 Mr. Raymond Shadis New England Coalition Post Office Box 98 Edgecomb, ME 04556 Mr. James P. Matteau Executive Director Windham Regional Commission 139 Main Street, Suite 505 Brattleboro, VT 05301 Mr. William K. Sherman Vermont Department of Public Service 112 State Street Drawer 20 Montpelier, VT 05620-2601
D. OBrien Thank you for informing us of your interest in our review of the Vermont Yankee EPU request.
We will take your recommendations under advisement as we perform our review of the proposed EPU. A discussion of the independent calculations performed will be provided in the safety evaluation documenting our review.
Sincerely,
/RA/
Ledyard Marsh, Director Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-271 cc: See next page DISTRIBUTION: Y020040126 PUBLIC REnnis GMatakas, RGN-I RLobel PDI-2 R/F CRaynor CAnderson, RGN-I JDyer LCox NRR Mail Room BSheron RBorchardt JStang CHolden VBucci, OIG DSkay AHowe CCarpenter KManoly Accession Numbers: Package: ML042360245 Incoming: ML0416204693 Response: ML042360228 OFFICE PDI-Y/PM PDI-2/LA EMEB/SC SPSB OGC VY/SC PDI/D DLPM/D NAME DSkay CRaynor KManoly RLobel BPoole AHowe CHolden TMarsh DATE 9/10/04 8/27/04 8/30/04 8/30/04 9/13/04 9/10/04 9/13/04 9/15/04 OFFICIAL RECORD COPY