ML25356A512
| ML25356A512 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 12/22/2025 |
| From: | Coleman J Southern Nuclear Operating Co |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| Shared Package | |
| ML25356A511 | List: |
| References | |
| NL-25-0342 | |
| Download: ML25356A512 (0) | |
Text
Regulatory Affairs 3535 Colonnade Parkway Birmingham, AL 35243 205 992 5000 December 22, 2025 Docket Nos.: 50-321 NL-25-0342 50-366 10 CFR 50 10 CFR 54 ATTN: Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555-0001 Edwin I. Hatch Nuclear Plant, Units 1 and 2 Supplement 1 to Application for Subsequent Renewal of Operating Licenses Ladies and Gentlemen:
By letter dated May 15, 2025 (ML25135A390), Southern Nuclear Operating Company (SNC) submitted the subsequent license renewal application (SLRA) of Facility Operating License No.
DPR-57 and NPF-5 for Edwin I. Hatch Nuclear Plant, Units 1 and 2 (Hatch) to the U.S. Nuclear Regulatory Commission (NRC). From June to September 2025, the NRC conducted a safety audit of the Hatch SLRA. This letter provides a voluntary supplement to the Hatch SLRA to address additional NRC information needs resulting from the safety audit and the ongoing application review.
The Enclosure Index contained on page 3 of this letter provides an index of the enclosures to this supplement. The enclosures to this supplement are categorized by the NRC convention of Technical Review Package (TRP). Each enclosure covers one TRP and provides a description of the change, the affected sections and pages in the SLRA, and a markup of the SLRA pages.
Associated markups are denoted by strikethrough (deletion) or bold red underline (insertion) text.
This letter contains no NRC commitments. If there are any questions regarding this submittal, please contact Amy Aughtman at 205.992.7006 or agaughtm@southernco.com.
I declare under penalty of perjury that the foregoing is true and correct. Executed on the 22nd day of December 2025.
Respectfully submitted, Jamie M. Coleman Regulatory Affairs Director Digitally signed by JAMIEMCO Date: 2025.12.22 15:13:54
-06'00'
U. S. Nuclear Regulatory Commission NL-25-0342 Page 2
Enclosures:
See Enclosure Index (27 Enclosures)
Cc:
NRC Regional Administrator, Region ll NRC Senior Resident Inspector - Hatch Nuclear Plant Director, Office of Nuclear Reactor Regulation (NRR)
NRC Project Manager (Safety Review), NRR-DNRL NRC Project Manager (Environmental Review), NRR-DNRL NRC Project Manager, NRR-DORL - Hatch Nuclear Plant Director, Environmental Protection Division - State of Georgia RTYPE: CHA02.004
U. S. Nuclear Regulatory Commission NL-25-0342 Page 3 Enclosure Index Enclosure No.
Subject 1
TRP 2 - Water Chemistry 2
TRP 9 - BWR Vessel Internals 3
TRP 84 - Stainless Steel, Nickel Alloy, and Aluminum Further Evaluations 4
TRP 15 - Internal Coatings/Linings 5
TRP 23 - Inspection of Overhead Heavy Load and Light Load (Related to Refueling) Handling Systems 6
TRP 25 - Fire Protection 7
TRP 26 - Fire Water 8
TRP 33 - Selective Leaching 9
TRP 38 - Inspections of Internal Surfaces in Misc. Piping and Ducting Components 10 TRP 46 - Structures Monitoring 11 TRP 47 - Inspection of Water-Control Structures Associated with Nuclear Power Plants 12 TRP 53.1 - Inaccessible Medium Voltage Cables 13 TRP 54 - Metal Enclosed Bus 14 TRP 74 - Concrete 15 TRP 76 - Irradiation - Structural 16 TRP 86 - Recurring Internal Corrosion 17 TRP 142.3 - Adjusted Reference Temp (ART) for RPV Materials Due to Neutron Embrittlement 18 TRP 142.7 - Reflood Thermal Shock Analysis of RPV 19 TRP 143 - Metal Fatigue, TLAA 4.3 20 TRP 143.6 - ASME Section III, Class 2 and 3 and ANSI B31.1 and Associated HELB Analyses 21 TRP 143.7 - Environmentally-Assisted Fatigue 22 TRP 143.8 - High Energy Line Break Analyses Based on Cumulative Fatigue Usage 23 TRP 143.9 - Cycle-dependent Fracture Mechanics or Flaw Evaluations 24 Scoping and Screening 2.4 - Fire Protection 25 TRP 17 - Flow-Accelerated Corrosion 26 TRP 53.3 - Inaccessible Low Voltage Cables 27 TRP 143.1 Year Transient Cycle Projections