ML23060A162

R. E. Ginna Nuclear Power Plant, Supplemental Information - Proposed Alternatives Related to the Steam Generators

ML23060A162
Person / Time
Site:	Ginna
Issue date:	03/01/2023
From:	Reddick D Constellation Energy Generation
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
Download: ML23060A162 (1)

Text

200 Exelon Way Kennett Square, PA 19348

www.constellation.com

10 CFR 50.55a

March 1, 2023

U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001

R. E. Ginna Nuclear Power Plant Renewed Facility Operating License Nos. DPR-18 NRC Docket No. 50-244

Subject:

Supplemental Information - Proposed Alternatives Related to the Steam Generators

References:

1) Letter from D. Gudger (Exelon Generation Company, LLC) to U.S. Nuclear Regulatory Commission, "Proposed Alternative for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds and Nozzle Inside Radius Sections," dated September 1, 2021 (ML21244A328).

2) Email from J. Wiebe (U.S. Nuclear Regulatory Commission) to T. Loomis (Constellation Energy Generation, LLC), "Final RAIs 9.1.2021 Constellation Relief Request," dated May 6, 2022 (ML22271A077).

3) Letter from D. Gudger (Constellation Energy Generation, LLC) to U.S.

Nuclear Regulatory Commission, "Response to Request for Additional Information - Proposed Alternative for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds and Nozzle Inside Radius Sections," dated May 20, 2022 (ML22140A055).

4) Letter from D. Gudger (Exelon Generation Company, LLC) to U.S. Nuclear Regulatory Commission, "Proposed Alternative for Examinations of Examination Categories B-B, B-D, and C-A Steam Generator Pressure Retaining Welds and Full Penetration Welded Nozzles," dated December 14, 2021 (ML21348A078).

5) Email from J. Wiebe (U.S. Nuclear Regulatory Commission) to T. Loomis (Constellation Energy Generation, LLC), "Draft RAIs for Requests for Alternatives I4R-17, I4R-23, ISI-05-018, I6R-10 (EPID Nos.: L-2021-LLR-091, L-2021-LLR-092, L-2021-LLR-093, L-2021-LLR-094)," dated May 6, 2022 (ML22129A013).

6) Letter from D. Gudger (Constellation Energy Generation, LLC) to U.S.

Nuclear Regulatory Commission, "Response to Request for Additional Information - Proposed Alternative for Examinations of Examination Categories B-B, B-D, and C-A Steam Generator Pressure Retaining Welds and Full Penetration Welded Nozzles," dated June 17, 2022 (ML22168A005).

Supplemental Information - Proposed Alternatives Related to the Steam Generators March 1, 2023 Page 2

7) Letter from D. Reddick (Constellation Energy Generation, LLC) to U.S.

Nuclear Regulatory Commission, "Supplemental Information - Proposed Alternatives Related to the Steam Generators and Request for Forward Fit Analysis," dated September 20, 2022 (ML22263A440).

8) Letter from D. Reddick (Constellation Energy Generation, LLC) to U.S.

Nuclear Regulatory Commission, "Supplemental Information - Proposed Alternatives Related to the Steam Generators," dated February 21, 2023 (ML23052A068).

In the Referenced letters (References 1 and 4), Constellation Energy Generation, LLC (CEG) submitted proposed alternatives associated with examination of steam generator (SG) welds and components at Braidwood Generating Station (Braidwood), Units 1 and 2; Byron Generating Station (Byron), Units 1 and 2; Calvert Cliffs Nuclear Power Plant (Calvert Cliffs),

Units 1 and 2; and R. E. Ginna Nuclear Power Plant (Ginna). In References 3 and 6, CEG provided RAI responses, including a proposed performance monitoring plan. In References 7 and 8, CEG provided a revised performance monitoring plan for the Reference 4 proposed alternative.

With regards to Ginna as discussed in Reference 8, CEG requests hardship relief under 10 CFR 50.55a(z)(2) to allow less than the minimum examinations completed percentage in accordance with ASME Code,Section XI, Subparagraph IWC -2411(a) and Table IWC-2411-1 for the subject Category C-A Steam Generator welds for the first period of the current inspection interval. The specific hardship is being requested to avoid conducting inspections under 10 CFR 50.55a during the 2023 refueling outage while a relevant alternative is under review by the NRC staff.

There are no regulatory commitments in this letter.

If you have any questions or require additional information, please contact Tom Loomis at Thomas.loomis@constellation.com.

Respectfully,

Darani M. Reddick Director - Licensing Constellation Energy Generation, LLC

Supplemental Information - Proposed Alternatives Related to the Steam Generators March 1, 2023 Page 3

cc: Regional Administrator - NRC Region I Regional Administrator - NRC Region III NRC Senior Resident Inspector - Braidwood Station NRC Senior Resident Inspector - Byron Station NRC Senior Resident Inspector - Calvert Cliffs Nuclear Power Plant NRC Senior Resident Inspector - R. E. Ginna Nuclear Power Plant NRC Project Manager - Braidwood Station NRC Project Manager - Byron Station NRC Project Manager - Calvert Cliffs Nuclear Power Plant NRC Project Manager - R. E. Ginna Nuclear Power Plant Illinois Emergency Management Agency - Division of Nuclear Safety S. Seaman, State of Maryland A. L. Peterson, NYSERDA