ML050260294
| ML050260294 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 01/17/2005 |
| From: | Devincintis J Entergy Nuclear Northeast, Entergy Nuclear Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| BVY 05-04 | |
| Download: ML050260294 (3) | |
Text
En tergy Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
Vermont Yankee 185 Old Ferry Rd.
P.O. Box 500 Brattleboro, Vr 05302 Tel 802-257-5271 January 17, 2005 Docket No. 50-271 BVY 05-04 ATTN: Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555-0001
References:
(a)
Global Nuclear Fuel Report, 0000-0016-6419-SRLR, Rev. 0, Supplemental Reload Licensing Report for Vermont Yankee Nuclear Power Station, Reload 23/Cycle 24, March 2004.
(b)
Letter, S.A. Richards (USNRC) to J.F. Klapproth (GE), Review of NEDE-23785P, Volume 111, Supplement 1, Revision 1, "GESTR-LOCA and SAFER Models for Evaluation of Loss of Coolant Accident, Volume Ill, Supplement 1, Additional Information for Upper Bound PCT Calculation," February 1, 2002.
(c)
Letter, Vermont Yankee Nuclear Power Station, IOCFR50.46(a)(3)(ii) Annual Report for 2003, BVY 03-1 11, dated December 5, 2003.
Subject:
Vermont Yankee Nuclear Power Station License No. DPR-28 (Docket No. 50-271) 10CFR50.46(a)(3)(ii) Annual Report for 2004 This letter is to report, in accordance with IOCFR50.46(a)(3)(ii), changes in peak cladding temperature (PCT) for the Vermont Yankee (VY) Emergency Core Cooling System (ECCS) Loss of Coolant Accident (LOCA) analysis. This annual report covers VY Cycle 23, from January 2004 to April 2004 and Cycle 24 from May 2004 to December 2004.
For Cycle 24, VY used the General Electric (GE) SAFER/GESTR methodology for the evaluation of the ECCS/LOCA.
The results of the analysis are summarized in Reference (a). The SAFER/GESTR-LOCA analysis is based on a power level of 1912 MWth. This power level bounds any lower power levels. The GE methodology has been approved by the NRC in Reference (b). The Licensing Basis PCT calculated for the three fuel types and including the I OCFR50.46 corrections for 2003 was reported in Reference (c).
The Cycle 24 SAFER/GESTR-LOCA results summarized in Reference (a) incorporated all the 50.46 errors up to notification number 2003-03. The following table updates the results to reflect subsequent errors identified in the methodology for all VY fuel types.
5 c c I
BVY 05-04 / page 2 Summary of 10CFR50.46 Errors for Vermont Yankee (2004)
Licensing Basis APCT (0F) 10 CFR 50.46 10CFR 50.46 Error Identification Error Description GE.14 GE-13 GE-9NB 2003-05 Impact of Postulated Hydrogen-Oxygen 0
0 0
Recombination, dated 5/13/2004 2004-01 Pilgrim Specific 50.46 Notification Not N/A N/A N/A Applicable toVY I
Total APCT (0F) 0 0
0 Previous Licensing Basis PCT [from Reference (a)]
1 9600F 1 9400F 19400F Adjusted Licensing Basis PCT 19600F 19400F 1940 0F The SAFER/GESTR-LOCA analysis results for GE-9NB fuel are bounded by GE-13 and thus are less than the value documented above Since the PCT for GE-14, GE-13 and GE-9NB fuel types are well within the acceptance criterion of 50.46(b)(1), there is no need for reanalysis or other action per 50.46(a)(3)(ii).
There are no new commitments being made in this submittal.
If you have any questions concerning this report, please contact me at (802) 258-4236.
Sincerely, zAam es M. DeVincentis Manager, Licensing Vermont Yankee Nuclear Power Station
BVY 05-04 / page 3 cc:
Mr. Richard B. Ennis, Project Manager License Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 0-8-BI Washington, DC 20555 Mr. Samuel J. Collins Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406-1415 USNRC Resident Inspector Vermont Yankee Nuclear Power Station 320 Governor Hunt Road P.O. Box 157 Vernon, VT 05354 Mr. David O'Brien, Commissioner VT Department of Public Service 112 State Street, Drawer 20 Montpelier, VT 05620-2601