ML23226A006
| ML23226A006 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood  |
| Issue date: | 09/19/2023 |
| From: | Lauren Gibson, Tyree C NRC/NRR/DNRL/NLRP |
| To: | Rhoades D Constellation Energy Generation, Constellation Nuclear |
| Shared Package | |
| ML23241A890 | List: |
| References | |
| EPID L-2022-RNW-0010, EPID L-2022-RNW-0011 | |
| Download: ML23226A006 (3) | |
Text
Mr. David Rhoades Senior Vice President Constellation Energy Generation, LLC President and Chief Nuclear Officer (CNO)
Constellation Nuclear 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
BRAIDWOOD STATION, UNIT 1, AND BYRON STATION, UNIT 1, STEAM GENERATORS - SAFETY EVALUATION REGARDNG THE RESPONSE TO LICENSE RENEWAL COMMITMENT 10 (EPIDS: L-2022-RNW-0010 AND L-2022-RNW-0011)
Dear David Rhoades:
By letter dated June 7, 2022 (Agencywide Documents Access and Management Systems (ADAMS) Accession No. ML22158A294), as supplemented by letter dated April 20, 2023 (ML23110A124), Constellation Energy Generation, LLC (CEG), submitted to the U.S. Nuclear Regulatory Commission (NRC or staff) a response to Commitment 10 of the Braidwood Station, Unit 1 and Byron Station, Unit 1 license renewal safety evaluation report. In December 2015, the NRC published the final Safety Evaluation Report Related to the License Renewal of Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2, as NUREG 2190, Volume 1 (ML15350A038) and NUREG-2190, Volume 2 (ML15350A041). In NUREG-2190, Volume 2, Appendix A, Byron Station Units 1 and 2, and Braidwood Station, Units 1 and 2, License Renewal Commitments, Commitment 10 parts 1 and 2 gave the stations three options to fulfill this commitment. Braidwood Unit 1 and Byron Unit 1 selected Option 2: Analysis, and Option 2: Analysis - Susceptibility, to fulfill Commitment 10 parts 1 and 2, respectively.
The NRC staff reviewed the information in the licensees submittal and determined that the licensee has fulfilled Commitment No. 10 for license renewal and demonstrated that the aging effects on nickel alloy steam generator divider plate assemblies and tube-to-tubesheet welds will be adequately managed so that the intended functions will be maintained consistent with the current licensing basis during the period of extended operation. The proprietary safety evaluation is provided as Enclosure 1 (ML23241A908) and the non-proprietary safety evaluation is provided as Enclosure 2 (ML23241A909).
September 19, 2023
D. Rhoades 2
If you have any questions, please contact me by email at Lauren.Gibson@nrc.gov.
Sincerely, Lauren K. Gibson, Chief License Renewal Projects Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation Docket Nos. 50-456 and 50-454
Enclosure:
1.
Proprietary Safety Evaluation 2.
Non-Proprietary Safety Evaluation cc w/encl.: Listserv Signed by Gibson, Lauren on 09/19/23
Pkg: ML23241A890 Letter: ML23226A006 Encl 1: ML23241A908 Encl 2: ML23241A909