ML050740506
| ML050740506 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/15/2005 |
| From: | David Helker AmerGen Energy Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 5928-05-20074, BAW-2485, Rev 1 | |
| Download: ML050740506 (3) | |
Text
March 15,2005 5928-05-20074 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Three Mile Island, Unit 1 (TMI Unit 1)
Facility Operating License No. DPR-50 NRC Docket No. 50-289
Subject:
M5TM Lead Test Rods - 15R Refueling Outage Post Irradiation Examinations
References:
(1) AmerGen letter to the NRC, dated January 18, 2001 (5928-00-20394),
Proposed Irradiation of Fuel Rods Beyond Current Lead Rod Burnup Limit (2) AmerGen letter to the NRC, dated April 11, 2001 (5928-01 -201 08),
Additional Information-Proposed Irradiation Of Fuel Rods Beyond Current Lead Rod Burnup Limit (3) NRC letter to AmerGen, dated May 18, 2001 (5928-01-301 73), Three Mile Island Nuclear Station, Unit 1 (TMI -1) - Re: Proposed Irradiation Of Fuel Rods Beyond Current Lead Rod Burnup Limit (4) AmerGen letter to the NRC, dated May 20, 2002 (5928-02-20120), M5iTM Lead Test Rods - 14R Refueling Outage Post Irradiation Examinations The following information is provided in accordance with the AmerGen Energy Company, LLC (AmerGen) commitment, described in References 1, 2, and 4, to provide Post Irradiation Examination (PIE) data for the M5TM lead test rods after their fourth cycle of operation to burnups in excess of 62 GWd/mtU. NRC concurrence to irradiate these rods for a fourth cycle was provided in Reference 3.
The PIE results obtained following the M5TM lead test rods fourth cycle of operation in TMI Unit 1 Cycle 14 are presented in Framatome ANP Report BAW-2485, Revision 1, (Enclosure 1). Please note that the high burnup project was supported by the U.S. Department of Energy and the enclosed report is not proprietary.
As noted in BAW-2485, the four M5TM lead test fuel rods successfully completed four 24-month cycles of irradiation at TMI Unit 1 with a maximum fuel rod burnup of 68.0 GWd/mtU and a total reactor residence time of 2732 Effective Full Power Days (EFPD). At the end of four cycles, all measured fuel performance parameters were within the design models and no unexpected
5928-05-20074 March 15,2005 Page 2 of 2 trends were observed. PIE measurements show that the M!jTM lead test fuel rods continue to demonstrate low growth and low corrosion performance relative to Zr-4 clad fuel, as expected.
The shoulder gap closure for these rods was also shown to be low.
This submittal satisfies the AmerGen commitment to provide the PIE data for the M5TM lead test rods and completes the high burnup test program for the M5TM rods at TMI Unit 1.
If any additional information is needed, please contact David J. Distel at (61 0) 765-551 7 Sincerely, David P. Helker Manager - Licensing AmerGen Energy Company, LLC
Enclosure:
(1) Framatome ANP Report BAW-2485, Revision 1, Post Irradiation Examination for Advanced Materials at Burnups Exceeding the Current Limit, January 2005 cc: S. J. Collins, Administrator, USNRC Region I T. G. Colburn, USNRC Senior Project Manager, TMI Unit 1 D. M. Kern, USNRC Senior Resident Inspector, TMI Unit 1 File No. 00141
ENCLOSURE 1 Framatome ANP Report BAW-2485, Revision 1 Post Irradiation Examination for Advanced Materials at Burnups Exceeding the Current Limit January 2005